/* ════════════════════════════════════════════════════════════════
   CompoundPro - Components (Beyaz/Açık ton, Ayna Cam)
   Butonlar, kartlar, navbar, modal, footer - mirror glass tema
   TÜM SİTE TEK KAYNAKTAN (design-system.css + bu dosya)
   ════════════════════════════════════════════════════════════════ */

/* ═══ AYNA CAM (MIRROR GLASS) BASE CLASS ═══ */
.mirror-glass {
  background: var(--mirror-glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-xl);
  box-shadow: var(--mirror-glass-shadow);
  position: relative;
  overflow: hidden;
}

.mirror-glass::before {
  content: "";
  position: absolute;
  inset: 1px;
  background: var(--mirror-glass-shine);
  pointer-events: none;
  z-index: 1;
  opacity: 0.4;
  mix-blend-mode: overlay;
}

.mirror-glass > * {
  position: relative;
  z-index: 2;
}


/* ═══ TRUST STRIP (100% Free vs) - Büyük ve dinamik ═══ */
.trust-strip {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  padding: 24px 32px;
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.92) 0%, 
    rgba(236, 253, 245, 0.6) 50%, 
    rgba(255, 255, 255, 0.85) 100%);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-2xl);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.08);
  position: relative;
  overflow: hidden;
}

.trust-strip::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.9) 50%, transparent 100%);
}

.trust-strip-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text-primary);
  letter-spacing: 0.01em;
  position: relative;
  padding: 4px 0;
}

.trust-strip-item .trust-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-emerald) 0%, var(--color-emerald-2) 100%);
  color: var(--color-white);
  font-size: 0.875rem;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
  animation: trustPulse 2.5s ease-in-out infinite;
}

@keyframes trustPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3); }
  50% { transform: scale(1.08); box-shadow: 0 4px 14px rgba(16, 185, 129, 0.5); }
}

.trust-strip-divider {
  width: 1px;
  height: 24px;
  background: var(--color-border);
}

@media (max-width: 640px) {
  .trust-strip {
    gap: 16px;
    padding: 16px 20px;
  }
  .trust-strip-item {
    font-size: 0.875rem;
  }
  .trust-strip-divider { display: none; }
}


/* ═══ SAYFA BAŞLIKLARI - TUTARLI STİL ═══ */
/* Tüm hero başlıkları aynı font/weight/letter-spacing */
.page-hero-title,
.hero-title,
.legal-hero-title,
.legal-hero h1,
.calc-hub-hero h1,
.blog-hero h1,
.learn-hero h1,
.about-hero h1,
.contact-hero h1 {
  font-family: var(--font-hero) !important;
  font-weight: 800 !important;
  font-size: clamp(2rem, 5vw, 3.25rem) !important;
  line-height: 1.2 !important;
  letter-spacing: -0.025em !important;
  color: var(--color-text-primary) !important;
  margin: 0 0 12px 0 !important;
  max-width: 90%;
}

@media (max-width: 768px) {
  .page-hero-title,
  .hero-title,
  .legal-hero-title,
  .legal-hero h1,
  .calc-hub-hero h1,
  .blog-hero h1,
  .learn-hero h1,
  .about-hero h1,
  .contact-hero h1 {
    font-size: clamp(1.875rem, 6vw, 2.5rem) !important;
  }
}


/* ═══ HERO TITLE (zarif, farklı font - sadece ana sayfa) ═══ */
.hero-title {
  font-weight: 900 !important;
  font-size: clamp(2.5rem, 5.8vw, 3.625rem) !important;
  line-height: 1.1 !important;
  margin-bottom: 18px !important;
}

/* ═══ BAŞLIK VURGUSU — TÜM SAYFALAR İÇİN ORTAK ═══ */
/* Title highlight (gradient text button) — sayfa başlıklarının
   bir bölümünü vurgulamak için kullanılır. <span class="title-highlight">…</span> */
.hero-title-accent,
.title-highlight {
  display: inline-block;
  position: relative;
  padding: 6px 16px;
  margin: 0 4px;
  border-radius: 12px;
  font-style: normal;
  font-weight: 800 !important;
  letter-spacing: -0.025em;
  line-height: 1.15;
  overflow: hidden;
  box-shadow: 
    0 4px 14px rgba(249, 115, 22, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease;
}

/* Gradient text overlay */
.hero-title-accent,
.title-highlight {
  background: linear-gradient(135deg, #EA580C 0%, #D97706 50%, #059669 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: gradientShift 5s ease-in-out infinite;
}

/* Gradient border frame and glass backdrop blur — dikdörtgen çerçeve ve buzlu cam yansıması */
.hero-title-accent::after,
.title-highlight::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: 12px;
  border: 1.5px solid rgba(234, 88, 12, 0.4) !important;
  background: rgba(255, 255, 255, 0.15) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  box-shadow: 
    0 8px 32px 0 rgba(249, 115, 22, 0.03),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.2) !important;
  pointer-events: none;
  z-index: -1; /* Text elementlerinin arkasına yerleştirilir */
  transition: all 0.3s ease;
}

/* Kayan cam yüzey efekti */
.hero-title-accent::before,
.title-highlight::before {
  content: "";
  position: absolute;
  top: 0;
  left: -150%;
  width: 80%;
  height: 100%;
  background: linear-gradient(100deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.6) 50%,
    rgba(255, 255, 255, 0) 100%);
  transform: skewX(-20deg);
  pointer-events: none;
  animation: shineSwipe 8.5s ease-in-out infinite;
  z-index: 1;
}

/* Hover'da hareket etmesin, sadece gölge belirsin */
.hero-title-accent:hover,
.title-highlight:hover {
  transform: none !important;
  box-shadow: 
    0 6px 18px rgba(249, 115, 22, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

/* Hover'da çerçeve ve buzlu cam yansıması daha belirgin olsun */
.hero-title-accent:hover::after,
.title-highlight:hover::after {
  background: rgba(255, 255, 255, 0.12) !important;
  border-color: rgba(234, 88, 12, 0.6) !important;
  box-shadow: 
    0 8px 32px 0 rgba(249, 115, 22, 0.08),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.35) !important;
}

/* Display-lg h2'lerde de aynı efekt çalışsın */
.display-lg .title-highlight,
.display-xl .title-highlight {
  padding: 4px 12px;
}

/* ═══ DİNAMİK ANİMASYONLAR — GRADIENT GEÇİŞİ ═══ */
@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes shineSwipe {
  0% { left: -150%; }
  60% { left: 150%; }
  100% { left: 150%; }
}

/* Hareket azaltma tercih edenler için animasyonu kapat */
@media (prefers-reduced-motion: reduce) {
  .hero-title-accent,
  .title-highlight,
  .hero-title-accent::before,
  .title-highlight::before {
    animation: none;
  }
}


/* ════════════════════════════════════════════════════════════════
   BUTTON COMPONENT SYSTEM - Task 3 (Premium Theme Redesign)
   Requirements: FR4 (Button Component System), NFR2 (Accessibility)
   
   Complete button system with:
   - Base .btn class with shared styles (Task 3.1)
   - Button variants: primary, secondary, ghost (Task 3.2)
   - Interactive states: hover, focus, active, disabled (Task 3.3)
   - Button sizes: small, medium (default), large (Task 3.4)
   ════════════════════════════════════════════════════════════════ */

/* ═══ TASK 3.1: BASE .BTN CLASS ═══ */
/* Base button class with shared styling for all button variants
   Requirements: FR4 (Button Component System)
   
   Features:
   - display: inline-flex for centered content with icon support
   - align-items: center, justify-content: center for perfect centering
   - gap: var(--space-2) for 8px spacing between text and icons
   - padding: var(--space-3) var(--space-6) for 12px vertical, 24px horizontal
   - border-radius: var(--radius-full) for pill-shaped buttons
   - font-family: var(--font-body) with font-weight 600, font-size 0.9375rem
   - transition: all var(--ease-base) for smooth 250ms transitions
   - cursor: pointer with border: 1px solid transparent for variant styling */
.btn {
  /* Flexbox layout for centered content and icon spacing */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2); /* 8px gap for icon spacing */
  
  /* Padding using spacing tokens: 12px vertical, 24px horizontal */
  padding: var(--space-3) var(--space-6);
  
  /* Pill shape using full border-radius token */
  border-radius: var(--radius-full);
  
  /* Typography: body font, 600 weight, 0.9375rem (15px) size */
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  
  /* Smooth transitions using --ease-base token (250ms cubic-bezier) */
  transition: all var(--ease-base);
  
  /* Interactive cursor and transparent border for variant styling */
  cursor: pointer;
  border: 1px solid transparent;
  
  /* Additional properties for proper button behavior */
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  user-select: none;
  overflow: hidden;
}

/* Glassy sheen sweep effect on hover */
.btn::after {
  content: "";
  position: absolute;
  top: 0;
  left: -150%;
  width: 80%;
  height: 100%;
  background: linear-gradient(
    100deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.25) 30%,
    rgba(255, 255, 255, 0.6) 50%,
    rgba(255, 255, 255, 0.25) 70%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: skewX(-20deg);
  pointer-events: none;
  z-index: 3;
}

/* On hover, trigger the shine sweep animation */
.btn:hover::after {
  animation: btnShine 1.5s cubic-bezier(0.19, 1, 0.22, 1) forwards;
}

@keyframes btnShine {
  0% {
    left: -150%;
  }
  100% {
    left: 150%;
  }
}


/* ═══ TASK 3.2: BUTTON VARIANTS ═══ */
/* Button variants with distinct visual styles
   Requirements: FR4 (Button Component System)
   
   Three main variants:
   1. .btn-primary: Orange gradient background, white text, shadow with glow
   2. .btn-secondary: Transparent background, orange border, orange text
   3. .btn-ghost: Transparent background, no border, orange text on hover */

/* PRIMARY BUTTON - Orange gradient with shadow glow */
.btn-primary {
  /* Glassmorphism Orange gradient background (80% transparent) */
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.2) 0%, rgba(194, 65, 12, 0.15) 100%) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1.5px solid rgba(234, 88, 12, 0.45) !important;
  
  /* Dark orange text for premium readability */
  color: #ea580c !important;
  
  /* Subtle glass shadow */
  box-shadow: 0 4px 14px rgba(234, 88, 12, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.4) !important;
  
  /* Position and overflow for pseudo-element chrome shine */
  position: relative;
  overflow: hidden;
}

/* Chrome shine effect (mirror reflection) on primary button */
.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.25) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

/* SECONDARY BUTTON - Transparent with orange border */
.btn-secondary {
  /* Transparent background to show page background */
  background-color: transparent;
  
  /* Orange border (1.5px for refined elegance) using accent color token */
  border: 1.5px solid var(--color-orange);
  
  /* Orange text using darker shade for better readability */
  color: var(--color-orange-2) !important;
  
  /* Adjust padding to account for thicker border (maintain visual size) */
  padding: 10.5px 22.5px;
}

/* GHOST BUTTON - Glassmorphism with subtle border */
.btn-ghost {
  /* Glass background with subtle transparency */
  background-color: var(--color-glass);
  
  /* Subtle border for definition */
  border: 1px solid var(--color-border);
  
  /* Primary text color (dark) */
  color: var(--color-text-primary) !important;
  
  /* Backdrop blur for glassmorphism effect */
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* INVERSE BUTTON - Transparent with white border, for use on dark backgrounds */
.btn-inverse {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255,255,255,.7);
}
.btn-inverse:hover {
  background: rgba(255,255,255,.1);
  border-color: var(--color-white);
}

/* ═══ TASK 3.3: INTERACTIVE STATES ═══ */
/* Interactive states for all button variants
   Requirements: FR4 (Button Component System), NFR2 (Accessibility)
   
   States implemented:
   - Hover: translateY(-1px) with enhanced shadow glow
   - Focus-visible: 3px solid orange outline with 3px offset (keyboard nav)
   - Active: scale(0.98) for tactile feedback
   - Disabled: 50% opacity, grayscale(0.5) filter, not-allowed cursor */

/* PRIMARY BUTTON HOVER STATE */
.btn-primary:hover {
  transform: none !important;
  
  /* Enhanced shadow with orange glow + inset chrome highlight */
  box-shadow: var(--shadow-glow-orange), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  
  /* Brighten colors slightly */
  filter: brightness(1.05);
  
  /* Prevent text color from changing on hover */
  color: #ea580c !important;
}

/* PRIMARY BUTTON ACTIVE STATE */
.btn-primary:active {
  /* No movement on click */
  transform: none !important;
}

/* SECONDARY BUTTON HOVER STATE */
.btn-secondary:hover {
  /* No movement on hover */
  transform: none !important;
  
  /* Subtle orange background tint (10% opacity) */
  background-color: var(--color-orange-10);
  
  /* Orange glow shadow */
  box-shadow: 0 0 16px rgba(249, 115, 22, 0.18);
  
  /* Maintain orange text color, override general a:hover */
  color: var(--color-orange-2) !important;
}

/* SECONDARY BUTTON ACTIVE STATE */
.btn-secondary:active {
  /* No movement on click */
  transform: none !important;
}

/* GHOST BUTTON HOVER STATE */
.btn-ghost:hover {
  /* No movement on hover */
  transform: none !important;
  
  /* Slightly more opaque background on hover */
  background-color: var(--color-bg-elevated-2);
  
  /* Stronger border on hover */
  border-color: var(--color-border-strong);
  
  /* Maintain primary text color, override general a:hover */
  color: var(--color-text-primary) !important;
}

/* GHOST BUTTON ACTIVE STATE */
.btn-ghost:active {
  /* No movement on click */
  transform: none !important;
}

/* FOCUS-VISIBLE STATES (Keyboard Navigation Accessibility) */
/* Base button focus indicator */
.btn:focus-visible {
  /* 3px solid orange outline with 3px offset */
  outline: 3px solid var(--color-orange);
  outline-offset: 3px;
}

/* Primary button focus indicator (darker orange for better contrast) */
.btn-primary:focus-visible {
  outline: 3px solid var(--color-orange-2);
  outline-offset: 3px;
}

/* Secondary button focus indicator */
.btn-secondary:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 2px;
}

/* Ghost button focus indicator (dark outline for contrast) */
.btn-ghost:focus-visible {
  outline: 3px solid var(--color-text-primary);
  outline-offset: 2px;
}

/* DISABLED STATE */
/* Disabled buttons use 50% opacity, grayscale filter, not-allowed cursor
   Requirements: FR4 (Button Component System), NFR2 (Accessibility) */
.btn:disabled,
.btn[aria-disabled="true"] {
  /* Reduce opacity to 50% */
  opacity: 0.5;
  
  /* Change cursor to indicate non-interactive state */
  cursor: not-allowed;
  
  /* Apply grayscale filter (50%) to desaturate colors */
  filter: grayscale(0.5);
  
  /* Disable pointer events to prevent interaction */
  pointer-events: none;
}

/* ═══ TASK 3.4: BUTTON SIZES ═══ */
/* Button size variations using spacing and typography tokens
   Requirements: FR4 (Button Component System)
   
   Three sizes:
   - Small: --space-2 and --space-4 padding, 0.875rem font-size
   - Medium: --space-3 and --space-6 padding, 0.9375rem font-size (default)
   - Large: --space-4 and --space-8 padding, 1rem font-size */

/* SMALL BUTTON */
.btn-sm {
  /* Padding: 8px vertical, 16px horizontal */
  padding: var(--space-2) var(--space-4);
  
  /* Font size: 0.875rem (14px) */
  font-size: 0.875rem;
}

/* Secondary small button (adjust for thicker border) */
.btn-secondary.btn-sm {
  padding: 6.5px 14.5px;
}

/* MEDIUM BUTTON (default size, already defined in .btn base class) */
.btn-md {
  /* Padding: 12px vertical, 24px horizontal (same as .btn default) */
  padding: var(--space-3) var(--space-6);
  
  /* Font size: 0.9375rem (15px) (same as .btn default) */
  font-size: 0.9375rem;
}

/* Secondary medium button (adjust for thicker border) */
.btn-secondary.btn-md {
  padding: 10.5px 22.5px;
}

/* LARGE BUTTON */
.btn-lg {
  /* Padding: 16px vertical, 32px horizontal */
  padding: var(--space-4) var(--space-8);
  
  /* Font size: 1rem (16px) */
  font-size: 1rem;
}

/* Secondary large button (adjust for thicker border) */
.btn-secondary.btn-lg {
  padding: 14.5px 30.5px;
}

/* ═══ ADDITIONAL BUTTON VARIANTS ═══ */
/* Icon-only button (legacy, kept for compatibility) */
.btn-icon {
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
}

.btn-icon:hover {
  background-color: var(--color-bg-elevated-2);
}

/* Premium button variant (legacy, kept for compatibility) */
.btn-premium {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.2) 0%, rgba(234, 88, 12, 0.15) 100%) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1.5px solid rgba(124, 58, 237, 0.45) !important;
  color: #7c3aed !important;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.4) !important;
  position: relative;
  overflow: hidden;
}

.btn-premium:focus-visible {
  outline: 3px solid var(--color-violet);
  outline-offset: 3px;
}

.btn-premium::after {
  content: "★";
  margin-left: -2px;
  filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.7));
}

.btn-premium::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.25) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

.btn-premium:hover {
  transform: none !important;
  box-shadow: var(--shadow-glow-violet), 0 0 32px rgba(124, 58, 237, 0.4);
  filter: brightness(1.05);
  color: #ea580c !important;
}

.btn-premium:active {
  transform: none !important;
}


/* ═══ CARDS (Ayna Cam) ═══ */
/* Task 4.1: Base .card class with gradient background, emerald/orange tints
   Requirements: FR5 (Card Component System)
   - Gradient background with emerald (#10B981) and orange (#F97316) tints
   - Semi-transparent emerald border: 1.5px solid rgba(16,185,129,0.28)
   - Border-radius using --radius-2xl token (32px)
   - Layered box-shadow: inset highlight (white chrome) + outer shadow (emerald glow)
   - Responsive padding: --space-6 (24px) on desktop, --space-4 (16px) on mobile
   - Transition using --ease-base token (250ms cubic-bezier)
   - Hover animation: translateY(-2px) with enhanced shadow and border shift to orange */
.card {
  /* Gradient background with emerald/orange tints for premium light aesthetic
     - White at edges (96%, 92%) for strong base
     - Emerald tint at 35% (rgba(236,253,245,0.75)) - subtle green influence
     - Orange tint at 70% (rgba(254,243,199,0.45)) - subtle warm influence
     This creates a sophisticated color depth while maintaining readability */
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.96) 0%, 
    rgba(236, 253, 245, 0.75) 35%,
    rgba(254, 243, 199, 0.45) 70%, 
    rgba(255, 255, 255, 0.92) 100%);
  
  /* Semi-transparent emerald border (1.5px for refined elegance)
     Uses emerald accent color with 28% opacity for subtle accent */
  border: 2px solid rgba(16, 185, 129, 0.60);
  
  /* Border-radius using design token --radius-2xl (32px) for soft, premium corners */
  border-radius: var(--radius-2xl);
  
  /* Responsive padding using design tokens:
     - Desktop: --space-6 (24px) - generous spacing for content breathing room
     - Mobile: --space-4 (16px) - optimized for smaller screens (set in media query below) */
  padding: var(--space-6);
  
  /* Layered box-shadow for depth and premium glass effect:
     1. inset 0 1px 0 white - top chrome highlight (mirror effect)
     2. 0 1px 0 white 0.8 - outer top highlight (glass rim)
     3. 0 8px 32px emerald 0.10 - main shadow with emerald tint (brand color glow)
     4. 0 0 0 1px hairline - subtle border definition */
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 1px 0 rgba(255, 255, 255, 0.8),
    0 8px 32px rgba(16, 185, 129, 0.10),
    0 0 0 1px rgba(15, 23, 42, 0.04);
  
  /* Smooth transition using --ease-base token (250ms cubic-bezier(0.4, 0, 0.2, 1))
     Applies to all properties for consistent hover/state changes */
  transition: all var(--ease-base);
  
  /* Text color and positioning for pseudo-elements */
  color: var(--color-text-primary);
  position: relative;
  overflow: hidden;
}

.card::before {
  /* Mirror shine top */
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1.5px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.9) 30%, 
    rgba(16, 185, 129, 0.4) 50%, 
    rgba(255, 255, 255, 0.9) 70%, 
    transparent 100%);
  pointer-events: none;
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.card::after {
  /* Mirror reflection glow */
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    transparent 40%, 
    rgba(255, 255, 255, 0.3) 50%, 
    transparent 60%);
  pointer-events: none;
  mix-blend-mode: overlay;
  border-radius: inherit;
  opacity: 0.4;
  transition: opacity var(--ease-slow);
}

.card:hover {
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 1px 0 rgba(255, 255, 255, 0.8),
    0 14px 44px rgba(16, 185, 129, 0.18),
    0 0 0 1px rgba(15, 23, 42, 0.04);
  border-color: rgba(249, 115, 22, 0.85);
  transform: translateY(-2px);
}

.card:hover::after {
  opacity: 0.7;
}

/* Task 4.4: Ensure card child elements are properly layered
   Requirements: FR5 (Card Component System)
   - Set position: relative and z-index: 2 on child elements
   - Prevent z-index conflicts with pseudo-elements (::before and ::after)
   - Ensures content appears above mirror shine and chrome highlights */
.card > * {
  position: relative;
  z-index: 2;
}

/* ═══ CARD VARIANTS - Task 4.2 ═══ */
/* Card variants that extend the base .card styling with different visual treatments
   Requirements: FR5 (Card Component System)
   
   Three variants implemented:
   1. .card-glass: True glassmorphism with backdrop-filter using .glass-surface utility
   2. .card-premium: Premium variant with .glass-mirror shine overlay effect
   3. .card-dark: Darker background gradient with adjusted text colors */

/* .card-glass: Glassmorphism variant with backdrop-filter
   Uses the .glass-surface utility class for true glassmorphism effect
   - Backdrop-filter creates frosted glass appearance
   - Semi-transparent gradient background for depth
   - Works with .glass-surface utility from task 2.1
   - Maintains responsive padding from base .card class */
.card-glass {
  /* Use .glass-surface utility for glassmorphism foundation */
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow);
  
  /* Padding and transitions inherit from base .card unless overridden */
  padding: var(--space-6);
  color: var(--color-text-primary);
  transition: all var(--ease-base);
  position: relative;
  overflow: hidden;
}

/* Top chrome highlight for glass card */
.card-glass::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.9) 50%, transparent 100%);
  pointer-events: none;
}

/* Hover state for glass card */
.card-glass:hover {
  border-color: rgba(249, 115, 22, 0.85);
  box-shadow: var(--glass-shadow), 0 14px 44px rgba(16, 185, 129, 0.18);
  transform: translateY(-2px);
}

/* Task 4.4: Ensure glass card child elements are properly layered */
.card-glass > * {
  position: relative;
  z-index: 2;
}

/* .card-premium: Premium variant with mirror shine overlay
   Adds .glass-mirror effect for premium chrome-like finish
   - Diagonal shine overlay using .glass-mirror utility from task 2.2
   - Gradient background with emerald/orange tints
   - Enhanced shadow for elevated appearance
   - Shine effect creates premium aesthetic */
.card-premium {
  /* Base gradient similar to default .card but with enhanced effects */
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.96) 0%, 
    rgba(236, 253, 245, 0.75) 35%,
    rgba(254, 243, 199, 0.45) 70%, 
    rgba(255, 255, 255, 0.92) 100%);
  border: 2px solid rgba(16, 185, 129, 0.60);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 1px 0 rgba(255, 255, 255, 0.8),
    0 8px 32px rgba(16, 185, 129, 0.10);
  transition: all var(--ease-base);
  
  /* Enable .glass-mirror shine overlay */
  position: relative;
  overflow: hidden;
}

/* .glass-mirror shine effect for premium cards
   Diagonal gradient shine overlay for chrome-like premium finish
   This replicates the .glass-mirror utility inline for the card-premium variant */
.card-premium::before {
  content: "";
  position: absolute;
  inset: 1px;
  background: linear-gradient(135deg,
    transparent 30%,
    rgba(255, 255, 255, 0.6) 50%,
    transparent 70%);
  opacity: 0.4;
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: 1;
}

/* Ensure card content is above shine overlay */
.card-premium > * {
  position: relative;
  z-index: 2;
}

/* Premium card hover state */
.card-premium:hover {
  transform: translateY(-2px);
  border-color: rgba(249, 115, 22, 0.85);
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 14px 44px rgba(16, 185, 129, 0.18);
}

.card-premium:hover::before {
  opacity: 0.6;
}

/* .card-dark: Darker background variant with adjusted text colors
   Darker gradient background while maintaining light theme compatibility
   - Deeper background gradient (reduced opacity for darker appearance)
   - Adjusted text colors for proper contrast on darker background
   - Maintains glassmorphism aesthetic with backdrop-filter
   - Semi-transparent white border for subtle definition */
.card-dark {
  /* Darker gradient background - reduced opacity values for deeper appearance
     Starts at 85% white (darker than base card's 96%)
     Middle tints are more pronounced (emerald at 0.5, orange at 0.35)
     Ends at 80% white for overall darker aesthetic */
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.85) 0%, 
    rgba(236, 253, 245, 0.5) 35%,
    rgba(254, 243, 199, 0.35) 70%, 
    rgba(255, 255, 255, 0.8) 100%);
  
  /* Add backdrop-filter for glassmorphism effect */
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  
  /* Slightly more opaque white border for definition on darker background */
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  
  /* Use primary text color - already provides good contrast
     No need to adjust text color as the darker background still maintains
     sufficient contrast with var(--color-text-primary) */
  color: var(--color-text-primary);
  
  /* Enhanced shadow for darker card to create depth */
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 8px 32px rgba(15, 23, 42, 0.12);
  
  transition: all var(--ease-base);
  position: relative;
  overflow: hidden;
}

/* Dark card hover state */
.card-dark:hover {
  transform: translateY(-2px);
  border-color: rgba(249, 115, 22, 0.5);
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 14px 44px rgba(15, 23, 42, 0.15);
}

/* Task 4.4: Ensure dark card child elements are properly layered */
.card-dark > * {
  position: relative;
  z-index: 2;
}

.glow-orange:hover {
  box-shadow: 0 0 32px rgba(249, 115, 22, 0.25), var(--shadow-lg);
}

.glow-emerald:hover {
  box-shadow: 0 0 32px rgba(16, 185, 129, 0.25), var(--shadow-lg);
}

.glow-sea:hover {
  box-shadow: 0 0 32px rgba(14, 165, 233, 0.25), var(--shadow-lg);
}

.glow-violet:hover {
  box-shadow: 0 0 32px rgba(124, 58, 237, 0.3), var(--shadow-lg);
}

/* ═══ CARD RESPONSIVE PADDING - Task 4.1 & 4.2 ═══ */
/* Mobile optimization: reduce padding from --space-6 (24px) to --space-4 (16px)
   Ensures content has optimal breathing room on smaller screens while
   maximizing usable space for calculator inputs and results
   Applies to base .card and all variants (.card-glass, .card-premium, .card-dark) */
@media (max-width: 768px) {
  .card,
  .card-glass,
  .card-dark,
  .card-premium {
    padding: var(--space-4);
  }
}


/* ════════════════════════════════════════════════════════════════
   FORM INPUT SYSTEM - Task 5 (Premium Theme Redesign)
   Requirements: FR6 (Form Input System), NFR2 (Accessibility)
   
   Complete form input system with:
   - Input wrapper structure with label and field (Task 5.1)
   - Input states: default, hover, focus, error, success (Task 5.2)
   - Prefix/suffix icon support for currency and units (Task 5.3)
   - Select and textarea styling (Task 5.4)
   ════════════════════════════════════════════════════════════════ */

/* ═══ TASK 5.1: INPUT WRAPPER STRUCTURE ═══ */
/* Input wrapper structure (.input-wrapper, .input-label, .input-field)
   Requirements: FR6 (Form Input System)
   
   Features:
   - .input-wrapper: flex column layout with --space-2 gap
   - .input-label: --font-body with font-weight 500, 0.875rem size
   - .input-field: padding 11px 16px, 2px border, --radius-md, --font-mono
   - Transition for border color and box-shadow for smooth state changes */

/* Input wrapper: flex column container with 8px gap between label and input */
.input-wrapper {
  /* Flex column layout for vertical stacking of label above input */
  display: flex;
  flex-direction: column;
  
  /* 8px gap between label and input field using spacing token */
  gap: var(--space-2);
  
  /* Position relative for absolute positioning of prefix/suffix icons */
  position: relative;
}

/* Input label: body font with medium weight and small size */
.input-label {
  /* Body font family for consistency with site typography */
  font-family: var(--font-body);
  
  /* 500 font-weight for medium emphasis (between normal 400 and bold 600) */
  font-weight: 500;
  
  /* 0.875rem (14px) size for proper label hierarchy */
  font-size: 0.875rem;
  
  /* Primary text color for maximum readability */
  color: var(--color-text-primary);
  
  /* Optional: add cursor pointer if label is clickable (for accessibility) */
  cursor: pointer;
}

/* Input field: monospace font with proper padding and border styling */
.input-field {
  /* Padding: 11px vertical, 16px horizontal for comfortable input area
     11px chosen to account for 2px border (total 13px = roughly --space-3) */
  padding: 11px 16px;
  
  /* 2px solid border using strong border color token
     Thicker border (2px vs 1px) for better visibility and interaction clarity */
  border: 2px solid var(--color-border-strong);
  
  /* Border-radius using --radius-md token (8px) for soft corners */
  border-radius: var(--radius-md);
  
  /* Monospace font for numerical values and consistent character width
     Important for calculators and numerical inputs */
  font-family: var(--font-mono);
  
  /* 1rem (16px) font size for readability */
  font-size: 1rem;
  
  /* Primary text color for input text */
  color: var(--color-text-primary);
  
  /* Secondary background color (white) for clean input appearance */
  background-color: var(--color-bg-secondary);
  
  /* Smooth transition for border color and box-shadow using --ease-base token (250ms)
     Creates smooth visual feedback for hover/focus state changes */
  transition: border-color var(--ease-base), box-shadow var(--ease-base);
  
  /* Full width by default (can be constrained by parent container) */
  width: 100%;
  
  /* Remove default browser outline (we use custom focus styles) */
  outline: none;
}

/* ═══ TASK 5.2: INPUT STATES ═══ */
/* Input states: default, hover, focus, error, success
   Requirements: FR6 (Form Input System), NFR2 (Accessibility)
   
   States implemented:
   - Default: --color-border-strong border (already defined in .input-field base)
   - Hover: --color-accent-orange border for interactive feedback
   - Focus: orange border + 3px rgba shadow ring for clear focus indication
   - Focus-visible: 3px solid orange outline with 2px offset (keyboard navigation)
   - Error: red border with error message display for validation feedback
   - Success: green border for successful validation indication */

/* HOVER STATE: Orange border on hover for interactive feedback */
.input-field:hover {
  /* Orange accent border color on hover */
  border-color: var(--color-accent-orange);
}

/* FOCUS STATE: Orange border + shadow ring for clear focus indication */
.input-field:focus {
  /* Orange accent border color when focused */
  border-color: var(--color-accent-orange);
  
  /* 3px orange shadow ring with 10% opacity for soft glow effect
     Creates visible focus indicator without being too harsh */
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

/* FOCUS-VISIBLE STATE: Strong outline for keyboard navigation (accessibility) */
.input-field:focus-visible {
  /* 3px solid orange outline for keyboard users
     More visible than box-shadow for accessibility compliance */
  outline: 3px solid var(--color-accent-orange);
  
  /* 2px offset creates spacing between input border and outline */
  outline-offset: 2px;
}

/* ERROR STATE: Red border for validation errors */
.input-field.error,
.input-field[aria-invalid="true"] {
  /* Red rose color for error state */
  border-color: var(--color-rose);
}

/* Error state hover */
.input-field.error:hover,
.input-field[aria-invalid="true"]:hover {
  /* Maintain red border color on hover in error state */
  border-color: var(--color-rose);
}

/* Error state focus with red shadow ring */
.input-field.error:focus,
.input-field[aria-invalid="true"]:focus {
  /* Maintain red border on focus */
  border-color: var(--color-rose);
  
  /* Red shadow ring to match error state */
  box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.1);
}

/* SUCCESS STATE: Green border for successful validation */
.input-field.success {
  /* Emerald green color for success state */
  border-color: var(--color-accent-emerald);
}

/* Success state hover */
.input-field.success:hover {
  /* Maintain green border color on hover in success state */
  border-color: var(--color-accent-emerald);
}

/* Success state focus with green shadow ring */
.input-field.success:focus {
  /* Maintain green border on focus */
  border-color: var(--color-accent-emerald);
  
  /* Green shadow ring to match success state */
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* ERROR MESSAGE: Display error messages below input */
.input-error-message {
  /* Small font size for error messages */
  font-size: 0.875rem;
  
  /* Rose red color to match error border */
  color: var(--color-rose);
  
  /* Body font for consistency */
  font-family: var(--font-body);
  
  /* Margin top for spacing from input (4px using --space-1 token) */
  margin-top: var(--space-1);
}

/* ═══ TASK 5.3: PREFIX/SUFFIX ICON SUPPORT ═══ */
/* Prefix/suffix icon support for currency symbols ($, €, ₺) and units (%, years)
   Requirements: FR6 (Form Input System)
   
   Features:
   - .input-prefix and .input-suffix wrapper elements
   - Position icons absolutely within input wrapper
   - Adjust input padding to accommodate icons
   - Support currency symbols ($, €, ₺) and unit symbols (%, years) */

/* Input wrapper with prefix icon modifier */
.input-wrapper.has-prefix .input-field {
  /* Add left padding to accommodate prefix icon/text
     32px provides space for icon + spacing */
  padding-left: 38px;
}

/* Input wrapper with suffix icon modifier */
.input-wrapper.has-suffix .input-field {
  /* Add right padding to accommodate suffix icon/text
     38px provides space for icon + spacing */
  padding-right: 38px;
}

/* Prefix element (currency symbols, etc.) */
.input-prefix {
  /* Position absolutely within input wrapper */
  position: absolute;
  
  /* Position at left edge with appropriate spacing
     left: 12px aligns with input's left padding */
  left: 12px;
  
  /* Vertically center within input field
     Assumes input height includes padding + border + line-height
     Adjust top based on label height + gap + border */
  top: calc(0.875rem + var(--space-2) + 13px);
  
  /* Transform to perfect vertical centering */
  transform: translateY(-50%);
  
  /* Monospace font to match input field */
  font-family: var(--font-mono);
  
  /* Slightly smaller than input text for visual hierarchy */
  font-size: 0.875rem;
  
  /* Medium weight for visibility */
  font-weight: 500;
  
  /* Muted text color to differentiate from input value */
  color: var(--color-text-muted);
  
  /* Disable pointer events so clicks pass through to input */
  pointer-events: none;
}

/* Suffix element (units, percentages, etc.) */
.input-suffix {
  /* Position absolutely within input wrapper */
  position: absolute;
  
  /* Position at right edge with appropriate spacing
     right: 12px aligns with input's right padding */
  right: 12px;
  
  /* Vertically center within input field */
  top: calc(0.875rem + var(--space-2) + 13px);
  
  /* Transform to perfect vertical centering */
  transform: translateY(-50%);
  
  /* Monospace font to match input field */
  font-family: var(--font-mono);
  
  /* Slightly smaller than input text */
  font-size: 0.875rem;
  
  /* Medium weight for visibility */
  font-weight: 500;
  
  /* Muted text color */
  color: var(--color-text-muted);
  
  /* Disable pointer events */
  pointer-events: none;
}

/* Adjust prefix/suffix positioning when no label present */
.input-wrapper:not(:has(.input-label)) .input-prefix,
.input-wrapper:not(:has(.input-label)) .input-suffix {
  /* Adjust top position when no label (label height + gap removed) */
  top: 50%;
}

/* ═══ TASK 5.4: SELECT AND TEXTAREA STYLING ═══ */
/* Select dropdown and textarea styling consistent with inputs
   Requirements: FR6 (Form Input System)
   
   Features:
   - Style select dropdowns consistently with inputs
   - Add custom dropdown arrow icon
   - Style textarea with auto-resize capability
   - Maintain consistent border, padding, and focus styles */

/* SELECT DROPDOWN STYLING */
/* Select element with consistent styling to match .input-field */
.input-select,
select.input-field {
  /* Inherit all base .input-field styles, add select-specific overrides */
  
  /* Padding adjusted for dropdown arrow space on right */
  padding: 11px 36px 11px 16px;
  
  /* Custom dropdown arrow using background image (SVG data URI)
     Arrow pointing down, orange color to match accent */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20' fill='none'%3E%3Cpath d='M5 7.5L10 12.5L15 7.5' stroke='%23F97316' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  
  /* Position background (arrow) at right side with spacing */
  background-position: right 12px center;
  
  /* Don't repeat the arrow icon */
  background-repeat: no-repeat;
  
  /* Set background size for arrow icon */
  background-size: 20px 20px;
  
  /* Remove default browser arrow */
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  
  /* Pointer cursor to indicate interactivity */
  cursor: pointer;
}

/* Select hover state */
.input-select:hover,
select.input-field:hover {
  /* Orange border on hover */
  border-color: var(--color-accent-orange);
}

/* Select focus state */
.input-select:focus,
select.input-field:focus {
  /* Orange border on focus */
  border-color: var(--color-accent-orange);
  
  /* Orange shadow ring */
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
  
  /* Remove default outline */
  outline: none;
}

/* Select focus-visible state (keyboard navigation) */
.input-select:focus-visible,
select.input-field:focus-visible {
  /* Strong orange outline for keyboard users */
  outline: 3px solid var(--color-accent-orange);
  outline-offset: 2px;
}

/* TEXTAREA STYLING */
/* Textarea element with consistent styling to match .input-field */
.input-textarea,
textarea.input-field {
  /* Inherit all base .input-field styles, add textarea-specific overrides */
  
  /* Minimum height for comfortable text entry
     Roughly 4-5 lines of text */
  min-height: 120px;
  
  /* Allow vertical resizing only (no horizontal to prevent layout breaks) */
  resize: vertical;
  
  /* Line height for better text readability in multiline context */
  line-height: 1.6;
  
  /* Override font to body font for better readability in long text
     Monospace is better for numbers, body font better for prose */
  font-family: var(--font-body);
}

/* Textarea hover state */
.input-textarea:hover,
textarea.input-field:hover {
  /* Orange border on hover */
  border-color: var(--color-accent-orange);
}

/* Textarea focus state */
.input-textarea:focus,
textarea.input-field:focus {
  /* Orange border on focus */
  border-color: var(--color-accent-orange);
  
  /* Orange shadow ring */
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
  
  /* Remove default outline */
  outline: none;
}

/* Textarea focus-visible state (keyboard navigation) */
.input-textarea:focus-visible,
textarea.input-field:focus-visible {
  /* Strong orange outline for keyboard users */
  outline: 3px solid var(--color-accent-orange);
  outline-offset: 2px;
}

/* DISABLED STATE for all input types */
/* Disabled inputs, selects, and textareas */
.input-field:disabled,
.input-select:disabled,
.input-textarea:disabled,
select.input-field:disabled,
textarea.input-field:disabled {
  /* Reduced opacity to indicate non-interactive state */
  opacity: 0.6;
  
  /* Lighter background for disabled appearance */
  background-color: var(--color-bg-tertiary);
  
  /* Not-allowed cursor to indicate non-interactive */
  cursor: not-allowed;
  
  /* Muted text color */
  color: var(--color-text-muted);
}

/* Remove hover styles for disabled inputs */
.input-field:disabled:hover,
.input-select:disabled:hover,
.input-textarea:disabled:hover {
  /* Keep default border color, don't show orange on hover */
  border-color: var(--color-border-strong);
}


/* ════════════════════════════════════════════════════════════════
   RANGE SLIDER SYSTEM - Task 6 (Premium Theme Redesign)
   Requirements: FR7 (Range Slider System), NFR2 (Accessibility)
   
   Complete custom range slider system with:
   - Custom track and thumb styling with vendor prefixes (Task 6.1)
   - Dynamic fill gradient based on slider value (Task 6.2)
   - Tooltip for current value display (Task 6.3)
   - Interactive states: hover, active, focus, disabled (Task 6.4)
   - Keyboard navigation support (Task 6.5)
   ════════════════════════════════════════════════════════════════ */

/* ═══ TASK 6.1: STYLE RANGE SLIDER TRACK AND THUMB ═══ */
/* Custom range slider styling with removal of default browser appearance
   Requirements: FR7 (Range Slider System)
   
   Features:
   - Remove default styling with appearance: none (webkit and moz)
   - Track: 8px height, rounded (--radius-full), dynamic gradient background
   - Thumb: 22px circle, orange gradient, white border (3px), box-shadow
   - Vendor prefixes for cross-browser support (-webkit-, -moz-)
   - Smooth transitions for interactive feedback */

/* Slider wrapper container */
.slider-wrapper {
  /* Position relative for absolute tooltip positioning */
  position: relative;
  
  /* Padding for thumb overflow (11px = half of 22px thumb) */
  padding: 0 var(--space-1);
  
  /* Vertical margin for spacing from label and next element */
  margin: var(--space-4) 0 var(--space-2);
}

/* Base slider input styling */
.slider-input,
.calc-slider {
  /* Full width for responsive layout */
  width: 100%;
  
  /* Remove default browser styling */
  -webkit-appearance: none;
  appearance: none;
  
  /* Track dimensions */
  height: 8px;
  border-radius: var(--radius-full);
  
  /* ═══ TASK 6.2: DYNAMIC FILL GRADIENT ═══ */
  /* Background uses linear-gradient with CSS custom property --slider-fill
     This property is updated via JavaScript on input events
     Orange gradient for filled portion (0% to --slider-fill)
     Gray for remaining portion (--slider-fill to 100%)
     Default --slider-fill is 50% if not set */
  background: linear-gradient(
    to right,
    var(--color-orange) 0%,
    var(--color-orange) var(--slider-fill, 50%),
    #E2E8F0 var(--slider-fill, 50%),
    #E2E8F0 100%
  );
  
  /* Remove default outline (custom focus-visible styling below) */
  outline: none;
  
  /* Pointer cursor for interactive element */
  cursor: pointer;
  
  /* Fast transition for background gradient updates */
  transition: background 80ms linear;
  
  /* Subtle border and inset shadow for depth */
  border: 1px solid rgba(15, 23, 42, 0.1);
  box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.05);
}

/* ═══ WEBKIT THUMB STYLING (Chrome, Safari, Edge) ═══ */
.slider-input::-webkit-slider-thumb,
.calc-slider::-webkit-slider-thumb {
  /* Remove default webkit styling */
  -webkit-appearance: none;
  appearance: none;
  
  /* Thumb dimensions: 22px circle */
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  
  /* Orange gradient background (same as primary button) */
  background: linear-gradient(135deg, var(--color-orange) 0%, #EA580C 100%);
  
  /* White border (3px) for chrome effect */
  border: 3px solid var(--color-white);
  
  /* Grab cursor to indicate draggable */
  cursor: grab;
  
  /* Layered box-shadow: orange ring + elevation shadow */
  box-shadow: 0 0 0 1px rgba(249, 115, 22, 0.3), 0 2px 8px rgba(0, 0, 0, 0.15);
  
  /* Smooth transitions for hover/active states */
  transition: transform var(--ease-fast), box-shadow var(--ease-fast);
}

/* ═══ MOZ THUMB STYLING (Firefox) ═══ */
.slider-input::-moz-range-thumb,
.calc-slider::-moz-range-thumb {
  /* Thumb dimensions: 22px circle (Firefox uses 20px border-included sizing) */
  width: 20px;
  height: 20px;
  
  /* Orange gradient background */
  background: linear-gradient(135deg, var(--color-orange) 0%, #EA580C 100%);
  
  /* White border (2px for Firefox due to box model difference) */
  border: 2px solid var(--color-white);
  border-radius: var(--radius-full);
  
  /* Grab cursor to indicate draggable */
  cursor: grab;
  
  /* Box-shadow for depth */
  box-shadow: 0 0 12px rgba(249, 115, 22, 0.5), 0 2px 4px rgba(0, 0, 0, 0.4);
  
  /* Smooth transition for interactions */
  transition: transform var(--ease-fast);
}

/* ═══ TASK 6.4: ADD SLIDER INTERACTIVE STATES ═══ */
/* Interactive states for range slider
   Requirements: FR7 (Range Slider System), NFR2 (Accessibility)
   
   States:
   - Hover: scale thumb to 1.15, enhance shadow
   - Active/dragging: cursor changes to 'grabbing'
   - Focus-visible: 3px orange outline with 4px offset (keyboard users)
   - Disabled: reduced opacity (50%), grayscale filter */

/* HOVER STATE - Webkit thumb */
.slider-input::-webkit-slider-thumb:hover,
.calc-slider::-webkit-slider-thumb:hover {
  /* Scale up thumb for visual feedback */
  transform: scale(1.15);
  
  /* Enhanced shadow with orange glow */
  box-shadow: 0 0 20px rgba(249, 115, 22, 0.7), 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* HOVER STATE - Moz thumb */
.slider-input::-moz-range-thumb:hover,
.calc-slider::-moz-range-thumb:hover {
  /* Scale up thumb for visual feedback */
  transform: scale(1.15);
}

/* ACTIVE/DRAGGING STATE - Webkit thumb */
.slider-input::-webkit-slider-thumb:active,
.calc-slider::-webkit-slider-thumb:active {
  /* Change cursor to indicate active dragging */
  cursor: grabbing;
  
  /* Maintain scale from hover */
  transform: scale(1.15);
  
  /* Enhanced glow while dragging */
  box-shadow: 0 0 20px rgba(249, 115, 22, 0.7), 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* ACTIVE/DRAGGING STATE - Moz thumb */
.slider-input::-moz-range-thumb:active,
.calc-slider::-moz-range-thumb:active {
  /* Change cursor to indicate active dragging */
  cursor: grabbing;
  
  /* Maintain scale from hover */
  transform: scale(1.15);
}

/* FOCUS-VISIBLE STATE (Keyboard Navigation)
   Requirements: NFR2 (Accessibility - WCAG AA Keyboard Navigation)
   
   Provides clear focus indicator for keyboard users:
   - 3px solid orange outline
   - 4px offset from slider edge
   - Enhanced thumb shadow and scale
   
   This ensures keyboard users can clearly see which slider has focus */
.slider-input:focus-visible,
.calc-slider:focus-visible {
  /* Strong orange outline for keyboard focus */
  outline: 3px solid var(--color-orange);
  outline-offset: 4px;
  border-radius: var(--radius-full);
}

/* Enhanced thumb appearance when slider is focused (Webkit) */
.slider-input:focus-visible::-webkit-slider-thumb,
.calc-slider:focus-visible::-webkit-slider-thumb {
  /* Orange ring around thumb */
  box-shadow: 0 0 0 3px var(--color-orange-10), 0 0 20px rgba(249, 115, 22, 0.7), 0 2px 4px rgba(0, 0, 0, 0.4);
  
  /* Scale up for visibility */
  transform: scale(1.15);
}

/* Enhanced thumb appearance when slider is focused (Moz) */
.slider-input:focus-visible::-moz-range-thumb,
.calc-slider:focus-visible::-moz-range-thumb {
  /* Orange ring around thumb */
  box-shadow: 0 0 0 3px var(--color-orange-10), 0 0 20px rgba(249, 115, 22, 0.7), 0 2px 4px rgba(0, 0, 0, 0.4);
  
  /* Scale up for visibility */
  transform: scale(1.15);
}

/* DISABLED STATE
   Requirements: FR7 (Range Slider System), NFR2 (Accessibility)
   
   Disabled sliders are visually de-emphasized:
   - 50% opacity
   - Grayscale filter to desaturate colors
   - not-allowed cursor to indicate non-interactive state
   - pointer-events: none to prevent interaction */
.slider-input:disabled,
.calc-slider:disabled {
  /* Reduce opacity to indicate disabled state */
  opacity: 0.5;
  
  /* Desaturate colors with grayscale filter */
  filter: grayscale(0.5);
  
  /* Change cursor to indicate non-interactive */
  cursor: not-allowed;
  
  /* Prevent all pointer interactions */
  pointer-events: none;
}

/* ═══ TASK 6.3: CREATE TOOLTIP FOR DISPLAYING CURRENT VALUE ═══ */
/* Tooltip positioned absolutely above thumb, displays current slider value
   Requirements: FR7 (Range Slider System)
   
   Features:
   - Positioned absolutely above thumb (top: -38px)
   - Orange gradient background matching thumb
   - White text with monospace font for numbers
   - Left position calculated dynamically via JavaScript
   - Hidden by default (opacity: 0)
   - Visible on hover and focus (opacity: 1)
   - Smooth opacity transition (--ease-fast)
   - Pointer-events: none to avoid interfering with slider interaction */
.slider-tooltip {
  /* Absolute positioning relative to .slider-wrapper */
  position: absolute;
  top: -38px;
  left: 0;
  
  /* Center tooltip horizontally on thumb position */
  transform: translateX(-50%);
  
  /* Orange gradient background (matches thumb) */
  background: linear-gradient(135deg, var(--color-orange) 0%, #EA580C 100%);
  
  /* White text for contrast */
  color: var(--color-white);
  
  /* Padding for content spacing */
  padding: 5px 12px;
  
  /* Rounded corners */
  border-radius: var(--radius-sm);
  
  /* Monospace font for numeric values */
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.8125rem;
  
  /* Prevent text wrapping */
  white-space: nowrap;
  
  /* Ignore pointer events (tooltip shouldn't interfere with slider) */
  pointer-events: none;
  
  /* Hidden by default */
  opacity: 0;
  
  /* Smooth fade in/out transition */
  transition: opacity var(--ease-fast);
  
  /* Layer above slider */
  z-index: 5;
  
  /* Shadow for depth */
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4), 0 0 12px rgba(249, 115, 22, 0.4);
}

/* Tooltip arrow (small diamond pointing down to thumb) */
.slider-tooltip::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 8px;
  height: 8px;
  background: var(--color-orange);
}

/* Show tooltip on slider wrapper hover */
.slider-wrapper:hover .slider-tooltip {
  opacity: 1;
}

/* Show tooltip when slider is focused (keyboard navigation) */
.slider-wrapper:has(.slider-input:focus-visible) .slider-tooltip,
.slider-wrapper:has(.calc-slider:focus-visible) .slider-tooltip {
  opacity: 1;
}

/* Show tooltip when slider is being dragged (via .dragging class added by JS) */
.slider-wrapper.dragging .slider-tooltip {
  opacity: 1;
}

/* ═══ TASK 6.5: KEYBOARD NAVIGATION IMPLEMENTATION ═══ */
/* Keyboard navigation is implemented via JavaScript in core.js or premium-system.js
   Requirements: FR7 (Range Slider System), NFR2 (Accessibility)
   
   JavaScript handles:
   - Arrow Up/Right: Increment value by step amount
   - Arrow Down/Left: Decrement value by step amount
   - Home: Jump to minimum value
   - End: Jump to maximum value
   - Page Up: Large increment (10 × step)
   - Page Down: Large decrement (10 × step)
   
   CSS provides visual feedback via :focus-visible styles (defined above) */

/* Optional: Track labels for min/max values */
.slider-track-labels {
  /* Flexbox for label positioning */
  display: flex;
  justify-content: space-between;
  
  /* Spacing above labels */
  margin-top: 6px;
  
  /* Monospace font for consistency with values */
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
}


/* ═══ NAVBAR (Ayna Cam) ═══ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(250, 250, 247, 0.6);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: all var(--ease-slow);
}

.navbar.scrolled {
  background: rgba(250, 250, 247, 0.92);
  border-bottom-color: var(--color-border);
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.04);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 32px;
}

.navbar-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 2px;
  letter-spacing: -0.02em;
}

.navbar-logo span {
  color: var(--color-orange-2);
  font-weight: 800;
}

/* =========================================================
   COMPOUND PRO - Dynamic Gradient Brand Logo (Button Style)
   - Large bold display font
   - Button-like appearance with shadow
   - Gradient text animation (orange -> green)
   - Glass shine swipe animation
   - NO underline, glossy button effect
   ========================================================= */
.exponent-marquee {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  padding: 8px 20px;
  text-decoration: none;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.12) 0%, rgba(16, 185, 129, 0.12) 100%);
  border-radius: 12px;
  box-shadow: 
    0 4px 12px rgba(249, 115, 22, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  transition: all 0.3s ease;
}

.exponent-marquee:hover {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.18) 0%, rgba(16, 185, 129, 0.18) 100%);
  box-shadow: 
    0 6px 16px rgba(249, 115, 22, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
}

.exponent-track {
  display: inline-flex;
  align-items: center;
  position: relative;
  z-index: 2;
}

.exponent-text {
  display: inline-block;
  position: relative;
  font-family: var(--font-display, "Syne", "Inter", system-ui, sans-serif);
  font-weight: 800;
  font-size: 1.75rem;
  line-height: 1.1;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, #F97316 0%, #10B981 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: navGradientShift 5s ease-in-out infinite;
  position: relative;
  z-index: 2;
}

/* Kayan cam yüzey efekti (shine overlay) */
.exponent-marquee::before {
  content: "";
  position: absolute;
  top: 0;
  left: -150%;
  width: 80%;
  height: 100%;
  background: linear-gradient(100deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.6) 50%,
    rgba(255, 255, 255, 0) 100%);
  transform: skewX(-20deg);
  pointer-events: none;
  animation: navShineSwipe 6s ease-in-out infinite;
  z-index: 1;
}

/* Hover efekti */
.exponent-marquee:hover .exponent-text {
  transform: scale(1.02);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Animasyonlar */
@keyframes navGradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes navShineSwipe {
  0% { left: -150%; }
  50% { left: 150%; }
  100% { left: 150%; }
}

@media (prefers-reduced-motion: reduce) {
  .exponent-text,
  .exponent-marquee::before {
    animation: none;
  }
}

@media (max-width: 768px) {
  .exponent-marquee {
    height: 40px;
    padding: 6px 16px;
  }
  .exponent-text {
    font-size: 1.35rem;
  }
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.navbar-link {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  padding: 7px 12px;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--ease-base);
}

.navbar-link:hover {
  background-color: var(--color-bg-elevated-2);
  color: var(--color-text-primary);
}

.navbar-link:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 2px;
  background-color: var(--color-bg-elevated-2);
  color: var(--color-text-primary);
}

.navbar-logo:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Navbar actions group */
.navbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

@media (max-width: 640px) {
  .navbar-cta {
    display: none !important;
  }
}

/* Currency Switcher Wrapper */
.currency-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 38px;
  padding: 0 10px 0 12px;
  background-color: var(--color-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background-color var(--ease-base), border-color var(--ease-base), box-shadow var(--ease-base);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.currency-wrap:hover {
  background-color: var(--color-bg-elevated-2);
  border-color: var(--color-border-strong);
}

.currency-wrap:focus-within {
  border-color: var(--color-orange);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.15);
}

.currency-symbol {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 14px;
  font-size: 0.95rem;
  color: var(--color-orange-2);
  font-weight: 700;
  line-height: 1;
  user-select: none;
}

.currency-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--color-text-primary);
  font: inherit;
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0 14px 0 2px;
  margin: 0;
  cursor: pointer;
  letter-spacing: 0.01em;
}

.currency-select::-ms-expand {
  display: none;
}

.currency-select option {
  background-color: var(--color-white);
  color: var(--color-text-primary);
  font-weight: 600;
}

.currency-caret {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.65rem;
  color: var(--color-text-muted);
  pointer-events: none;
  line-height: 1;
}

.currency-wrap.changed {
  animation: currencyFlash 0.6s ease;
}

@keyframes currencyFlash {
  0%   { background-color: var(--color-orange-10); border-color: var(--color-orange); }
  100% { background-color: var(--color-glass); border-color: var(--color-border); }
}

@media (max-width: 768px) {
  .currency-wrap { padding: 0 8px 0 10px; height: 36px; }
  .currency-select { font-size: 0.8125rem; padding-right: 12px; }
  .currency-symbol { font-size: 0.875rem; }
}

.navbar-link.active {
  color: var(--color-orange-2);
  background-color: var(--color-orange-10);
}

.navbar .btn-icon {
  width: 38px;
  height: 38px;
  font-size: 1rem;
}

.navbar-hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: calc(var(--z-modal) + 1);
}

.navbar-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: transform var(--ease-base), opacity var(--ease-base);
}

/* Task 7.4: Mobile responsive hamburger menu
   Requirements: FR8, FR12 - Show hamburger below 1024px breakpoint
   Features:
   - Hide desktop menu items, show hamburger button
   - Slide-in menu drawer from right side
   - Full-height, glassmorphism styling
   - Overlay backdrop with fade animation
   - Close on outside click or Escape key */
@media (max-width: 1023px) {
  .navbar-nav {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    max-width: 85vw;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-left: 1px solid var(--color-border);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    gap: 8px;
    z-index: var(--z-modal);
    padding: 80px 24px 24px;
    box-shadow: -4px 0 24px rgba(15, 23, 42, 0.1);
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  
  .navbar-nav.open {
    display: flex;
    animation: slideInRight 250ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  }
  
  .navbar-hamburger {
    display: flex;
  }

  .navbar-hamburger.open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .navbar-hamburger.open span:nth-child(2) {
    opacity: 0;
  }
  
  .navbar-hamburger.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  /* Mobile navbar links full width */
  .navbar-nav .navbar-link {
    width: 100%;
    text-align: left;
    padding: 12px 16px;
    font-size: 1rem;
  }
  
  /* Dropdown in mobile: full width, no absolute positioning */
  .navbar-nav .has-dropdown .navbar-dropdown {
    position: static;
    transform: none;
    width: 100%;
    margin-top: 8px;
    animation: none;
  }
}

/* Navbar Dropdown (mirror glass) */
.has-dropdown {
  position: relative;
}

/* Bridge: gap between link and dropdown (prevents hover loss) */
.has-dropdown::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 16px;
  pointer-events: none;
  z-index: calc(var(--z-dropdown) - 1);
}

.has-dropdown:hover::after {
  pointer-events: auto;
}

.navbar-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg-surface);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.15), 0 0 0 1px var(--color-border);
  border-radius: var(--radius-lg);
  padding: 8px;
  min-width: 360px;
  max-width: 420px;
  max-height: min(80vh, 720px);
  overflow-y: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--color-border-strong);
  z-index: var(--z-dropdown);
}

.has-dropdown:hover .navbar-dropdown,
.has-dropdown:focus-within .navbar-dropdown,
.has-dropdown.is-open .navbar-dropdown {
  display: block;
  animation: slideDown 150ms ease forwards;
}

.dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text-primary);
  transition: background-color var(--ease-fast);
}

.dropdown-item:hover,
.dropdown-item:focus,
.dropdown-item:focus-visible {
  background-color: var(--color-bg-elevated-2);
}

.dropdown-item:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: -2px;
}

.dropdown-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.dropdown-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-title {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-primary);
}

.dropdown-desc {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.dropdown-category-title {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-orange-2);
  padding: 10px 12px 2px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}


/* ═══ MEGA MENU (Navbar Calculators) ═══ */
.navbar-dropdown.mega-menu {
  min-width: 380px;
  max-width: 480px;
  padding: 6px;
}

.mega-category {
  border-radius: var(--radius-md);
  position: relative;
}

.mega-category + .mega-category {
  margin-top: 2px;
}

.mega-cat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: background-color 200ms ease, color 200ms ease;
  outline: none;
}

.mega-category:hover .mega-cat-header,
.mega-category:focus-within .mega-cat-header {
  background-color: var(--color-bg-elevated-2);
}

.mega-cat-header:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: -2px;
}

.mega-cat-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  line-height: 1;
  width: 28px;
  text-align: center;
}

.mega-cat-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-grow: 1;
  min-width: 0;
}

.mega-cat-title {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-primary);
  line-height: 1.25;
}

.mega-cat-meta {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.mega-cat-arrow {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1;
  transition: transform 220ms ease, color 220ms ease;
  flex-shrink: 0;
}

.mega-category:hover .mega-cat-arrow,
.mega-category:focus-within .mega-cat-arrow {
  transform: translateX(3px);
  color: var(--color-orange-2);
}

.mega-cat-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  padding: 0 6px;
  margin-top: 0;
  transition: max-height 280ms cubic-bezier(0.2, 0.8, 0.3, 1),
              opacity 220ms ease,
              padding 220ms ease,
              margin-top 220ms ease;
}

.mega-category:hover .mega-cat-items,
.mega-category:focus-within .mega-cat-items {
  max-height: 360px;
  opacity: 1;
  padding: 4px 6px 8px 6px;
  margin-top: 0;
}

.mega-cat-items .dropdown-item {
  padding: 7px 10px;
  gap: 8px;
  border-radius: var(--radius-sm);
}

.mega-cat-items .dropdown-icon {
  font-size: 1.05rem;
  flex-shrink: 0;
}

.mega-cat-items .dropdown-content {
  gap: 1px;
}

.mega-cat-items .dropdown-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.mega-cat-items .dropdown-item:hover .dropdown-title {
  color: var(--color-orange-2);
}

.mega-cat-items .dropdown-desc {
  display: block;
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  line-height: 1.25;
  font-weight: 400;
  margin-top: 1px;
}

@media (max-width: 1023px) {
  .mega-cat-items {
    max-height: none !important;
    opacity: 1 !important;
    padding: 4px 6px 8px 6px !important;
    margin-top: 0 !important;
    overflow: visible !important;
  }
  .mega-cat-arrow {
    display: none !important;
  }
}

@media (max-width: 480px) {
  .navbar-dropdown.mega-menu {
    min-width: 280px;
    max-width: calc(100vw - 32px);
  }
  .mega-cat-items {
    grid-template-columns: 1fr;
  }
}


/* ═══ HERO ═══ */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 720px;
  display: flex;
  align-items: center;
  padding-top: 96px;
  padding-bottom: 80px;
  background: transparent;
}

.hero .grid-2 {
  grid-template-columns: minmax(0, 0.85fr) minmax(360px, 1fr);
  gap: 56px;
  align-items: center;
}

.hero .grid-2 > .animate-slide-up {
  max-width: 540px !important;
}

.hero .grid-2 > .animate-fade-in {
  max-width: 580px;
  margin-left: auto;
}

.hero .display-2xl {
  max-width: 560px;
  font-size: 3.5rem;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.hero .body-xl {
  max-width: 500px;
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.hero .card-dark,
.hero .card-glass {
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-xl);
}

.hero-bg-orbs {
  position: absolute;
  inset: 1px;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.hero-orb {
  position: absolute;
  border-radius: var(--radius-full);
  filter: blur(100px);
  will-change: transform;
}

.hero-orb-1 {
  background: radial-gradient(circle, var(--color-orange) 0%, transparent 70%);
  width: 600px;
  height: 600px;
  top: -200px;
  left: -150px;
  opacity: 0.18;
  animation: float 8s ease-in-out infinite;
}

.hero-orb-2 {
  background: radial-gradient(circle, var(--color-emerald) 0%, transparent 70%);
  width: 500px;
  height: 500px;
  top: -100px;
  right: -100px;
  opacity: 0.15;
  animation: float 10s ease-in-out infinite reverse;
}

.hero-orb-3 {
  background: radial-gradient(circle, var(--color-sea) 0%, transparent 70%);
  width: 600px;
  height: 600px;
  bottom: -200px;
  left: 30%;
  opacity: 0.12;
  animation: float 12s ease-in-out infinite;
}

.hero-orb-4 {
  background: radial-gradient(circle, var(--color-violet) 0%, transparent 70%);
  width: 400px;
  height: 400px;
  top: 40%;
  right: 20%;
  opacity: 0.10;
  animation: float 14s ease-in-out infinite;
}

.hero-content {
  position: relative;
  z-index: 10;
  width: 100%;
}

@media (min-width: 1280px) {
  .hero { min-height: 720px; }
}

@media (max-width: 1024px) {
  .hero {
    min-height: auto;
    padding: 112px 0 64px;
  }
  .hero .grid-2 { grid-template-columns: 1fr; }
  .hero .display-2xl { font-size: 2.75rem; }
}

@media (max-width: 640px) {
  .hero { padding: 104px 0 48px; }
  .hero .display-2xl { font-size: 2.25rem; }
  .hero .body-xl { font-size: 1rem; }
}


/* ═══ STAT CARD ═══ */
.stat-card {
  text-align: center;
  padding: 24px;
}

.stat-card[data-variant="orange"] {
  border-left: 3px solid var(--color-orange);
}

.stat-card[data-variant="emerald"] {
  border-left: 3px solid var(--color-emerald);
}

.stat-card[data-variant="sea"] {
  border-left: 3px solid var(--color-sea);
}

.stat-value {
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.stat-card[data-variant="orange"] .stat-value {
  color: var(--color-orange-2);
}

.stat-card[data-variant="emerald"] .stat-value {
  color: var(--color-emerald-2);
}

.stat-card[data-variant="sea"] .stat-value {
  color: var(--color-sea-2);
}

.stat-label {
  color: var(--color-text-muted);
}

.stat-value.counting {
  animation: pulse 1s infinite;
}


/* ═══ BADGE / PILL ═══ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.75rem;
  line-height: 1.5;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.badge-orange {
  background-color: var(--color-orange-10);
  color: var(--color-orange-700);
  border: 1px solid var(--color-orange-20);
}

.badge-emerald {
  background-color: var(--color-emerald-10);
  color: var(--color-emerald-700);
  border: 1px solid var(--color-emerald-20);
}

.badge-sea {
  background-color: var(--color-sea-10);
  color: var(--color-sea-700);
  border: 1px solid var(--color-sea-20);
}

.badge-violet {
  background-color: var(--color-violet-10);
  color: var(--color-violet-700);
  border: 1px solid rgba(124, 58, 237, 0.3);
}

.badge-premium {
  background: linear-gradient(135deg, var(--color-violet), var(--color-orange));
  color: var(--color-white);
  font-weight: 700;
}

.badge-dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
  border: 1px solid var(--color-border);
}

.badge-outline {
  border: 1px solid currentColor;
  background-color: transparent;
}


/* ═══ FEATURE GRID CARD ═══ */
.feature-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.96) 0%, 
    rgba(236, 253, 245, 0.75) 35%,
    rgba(254, 243, 199, 0.4) 70%, 
    rgba(255, 255, 255, 0.92) 100%);
  border: 1.5px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-2xl);
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 1px 0 rgba(255, 255, 255, 0.8),
    0 6px 24px rgba(16, 185, 129, 0.08),
    0 0 0 1px rgba(15, 23, 42, 0.04);
  transition: all var(--ease-base);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1.5px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.9) 30%, rgba(16, 185, 129, 0.4) 50%, rgba(255, 255, 255, 0.9) 70%, transparent 100%);
  pointer-events: none;
}

.feature-card:hover {
  border-color: rgba(249, 115, 22, 0.85);
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 14px 40px rgba(16, 185, 129, 0.16),
    0 0 0 1px rgba(15, 23, 42, 0.04);
  transform: translateY(-2px);
}

.feature-card:focus-visible {
  outline: 3px solid var(--color-orange-2);
  outline-offset: 3px;
  border-color: rgba(249, 115, 22, 0.85);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.feature-icon.orange {
  background: linear-gradient(135deg, var(--color-orange-10), var(--color-orange-20));
  color: var(--color-orange-2);
  box-shadow: 0 0 16px rgba(249, 115, 22, 0.15);
}

.feature-icon.emerald {
  background: linear-gradient(135deg, var(--color-emerald-10), var(--color-emerald-20));
  color: var(--color-emerald-2);
  box-shadow: 0 0 16px rgba(16, 185, 129, 0.15);
}

.feature-icon.sea {
  background: linear-gradient(135deg, var(--color-sea-10), var(--color-sea-20));
  color: var(--color-sea-2);
  box-shadow: 0 0 16px rgba(14, 165, 233, 0.15);
}

.feature-title {
  margin: 0;
  color: var(--color-text-primary);
}

.feature-desc {
  flex: 1;
  color: var(--color-text-muted);
}

.feature-link {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-orange-2);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
  transition: gap var(--ease-base);
}

.feature-link:hover {
  gap: 8px;
  color: var(--color-orange);
}

.feature-link:focus-visible {
  outline: 3px solid var(--color-orange-2);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

#calculators .feature-card {
  position: relative;
  gap: 18px;
  min-height: 240px;
  padding: 28px 24px 24px;
  overflow: visible;
}

#calculators .feature-card-top {
  min-height: 48px;
}

/* Flexbox fallback for feature-heading-row */
#calculators .feature-heading-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

#calculators .feature-heading-row > :first-child {
  flex: 0 0 46px;
}

#calculators .feature-heading-row > :last-child {
  flex: 1 1 auto;
  min-width: 0;
}

/* CSS Grid for modern browsers */
@supports (display: grid) {
  #calculators .feature-heading-row {
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr);
    align-items: center;
    gap: 8px;
  }

  #calculators .feature-heading-row > :first-child,
  #calculators .feature-heading-row > :last-child {
    flex: none;
    min-width: 0;
  }
}

#calculators .feature-card .feature-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  font-size: 20px;
}

#calculators .feature-card .feature-title {
  font-size: 1.18rem;
  line-height: 1.18;
  margin: 0;
}

#calculators .feature-card .badge {
  position: absolute;
  top: -12px;
  right: 24px;
  z-index: 2;
  box-shadow: var(--shadow-md);
}

#calculators .feature-card .feature-desc {
  flex: 1;
  margin: 0;
  padding-left: 6px;
  line-height: 1.55;
}

#calculators .feature-card .feature-link {
  padding-left: 6px;
}

@media (max-width: 768px) {
  #calculators .feature-card {
    min-height: 220px;
    padding: 26px 22px 22px;
  }
}


/* ═══ FAQ ACCORDION ═══ */
.faq-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border);
  width: 100%;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  cursor: pointer;
  background: transparent;
  border: none;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  text-align: left;
  color: var(--color-text-primary);
  transition: color var(--ease-base);
}

.faq-trigger:hover {
  color: var(--color-orange-2);
}

.faq-icon {
  font-size: 1.25rem;
  transition: transform var(--ease-base);
  display: inline-block;
  user-select: none;
  color: var(--color-text-muted);
}

.faq-trigger[aria-expanded="true"] {
  color: var(--color-orange-2);
}

.faq-trigger[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
  color: var(--color-orange-2);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--ease-slow) ease-in-out;
}

.faq-content.open {
  max-height: 500px;
}

.faq-content-inner {
  padding: 0 0 20px 0;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}


/* ═══ BLOG POST CARD ═══ */
.post-card {
  overflow: hidden;
  padding: 0;
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.96) 0%, 
    rgba(236, 253, 245, 0.7) 50%, 
    rgba(255, 255, 255, 0.92) 100%);
  border: 1.5px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-2xl);
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 6px 24px rgba(16, 185, 129, 0.08),
    0 0 0 1px rgba(15, 23, 42, 0.04);
  position: relative;
  transition: all var(--ease-base);
}

.post-card:hover {
  border-color: rgba(16, 185, 129, 0.5);
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 14px 40px rgba(16, 185, 129, 0.16),
    0 0 0 1px rgba(15, 23, 42, 0.04);
  transform: translateY(-2px);
}

.post-card-img {
  aspect-ratio: 16/9;
  background-color: var(--color-bg-elevated-2);
  overflow: hidden;
  position: relative;
}

.post-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--ease-slow);
}

.post-card:hover .post-card-img img {
  transform: scale(1.04);
}

.post-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.post-card-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  color: var(--color-text-muted);
}

.post-card-title {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--ease-base);
}

.post-card-title:hover {
  color: var(--color-orange-2);
}

.post-card-excerpt {
  flex: 1;
  color: var(--color-text-muted);
}

.post-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
}

.post-card-readmore {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-orange-2);
  text-decoration: none;
}


/* ═══ CALLOUT BOXES ═══ */
.callout {
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  border: 1px solid;
}

.callout-orange {
  background-color: var(--color-orange-10);
  border-color: rgba(249, 115, 22, 0.25);
  border-left: 4px solid var(--color-orange);
}

.callout-emerald {
  background-color: var(--color-emerald-10);
  border-color: rgba(16, 185, 129, 0.25);
  border-left: 4px solid var(--color-emerald);
}

.callout-sea {
  background-color: var(--color-sea-10);
  border-color: rgba(14, 165, 233, 0.25);
  border-left: 4px solid var(--color-sea);
}

.callout-rose {
  background-color: var(--color-rose-10);
  border-color: rgba(225, 29, 72, 0.25);
  border-left: 4px solid var(--color-rose);
}

.callout-icon {
  font-size: 20px;
  flex-shrink: 0;
  margin-top: 2px;
}

.callout-content {
  flex: 1;
}

.callout-title {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.callout-text {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}


/* ═══ TABLE OF CONTENTS ═══ */
.toc {
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.toc-title {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.toc-link {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: all var(--ease-base);
  display: block;
}

.toc-link:hover,
.toc-link.active {
  color: var(--color-orange-2);
  border-left-color: var(--color-orange);
  background-color: var(--color-orange-10);
}


/* ═══ BREADCRUMB ═══ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 12px 0;
  font-size: 0.875rem;
}

.breadcrumb-item {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--ease-base);
}

.breadcrumb-item:hover {
  color: var(--color-orange-2);
}

.breadcrumb-item:last-child {
  color: var(--color-text-primary);
  font-weight: 500;
  pointer-events: none;
}

.breadcrumb-sep {
  color: var(--color-text-dim);
  user-select: none;
}


/* ═══ MODAL (Ayna Cam) ═══ */
.modal-overlay {
  position: fixed;
  inset: 1px;
  background-color: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--ease-base);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  max-width: 560px;
  width: calc(100% - 48px);
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.95) translateY(8px);
  transition: transform var(--ease-base), opacity var(--ease-base);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: 0 30px 80px rgba(15, 23, 42, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.5) inset;
  color: var(--color-text-primary);
}

.modal::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.9) 50%, transparent 100%);
  pointer-events: none;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 2;
}

.modal-close.btn {
  position: absolute;
}


/* ═══ PROGRESS BAR ═══ */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-emerald));
  width: 0%;
  z-index: 1000;
  transition: width 100ms;
  box-shadow: 0 0 8px var(--color-orange);
}

.article-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-sea));
  width: 0%;
  z-index: 1000;
  transition: width 100ms;
  box-shadow: 0 0 8px var(--color-orange);
}


/* ═══ TOOLTIP ═══ */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--ease-fast);
  z-index: var(--z-dropdown);
  box-shadow: var(--shadow-md);
}

[data-tooltip]:hover::after,
[data-tooltip]:focus-within::after {
  opacity: 1;
}


/* ═══ FOOTER (Açık ton) ═══ */
.footer {
  background: linear-gradient(180deg, var(--color-bg-base) 0%, #F1F5F9 100%);
  color: var(--color-text-muted);
  padding: 64px 0 32px;
  border-top: 1px solid var(--color-border);
  position: relative;
}

/* Flexbox fallback for footer-grid */
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
}

.footer-grid > :first-child {
  flex: 2 1 400px;
  min-width: 0;
}

.footer-grid > :not(:first-child) {
  flex: 1 1 200px;
  min-width: 0;
}

/* CSS Grid for modern browsers */
@supports (display: grid) {
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
  }

  .footer-grid > :first-child,
  .footer-grid > :not(:first-child) {
    flex: none;
    min-width: 0;
  }
}

@media (max-width: 768px) {
  .footer-grid {
    gap: 32px;
  }

  .footer-grid > :first-child,
  .footer-grid > :not(:first-child) {
    flex: 1 1 100%;
  }

  @supports (display: grid) {
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.375rem;
  color: var(--color-text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.footer-logo span {
  background: linear-gradient(135deg, var(--color-orange), var(--color-amber));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.footer-tagline {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--ease-base);
}

.footer-link:hover {
  color: var(--color-orange-2);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  margin-top: 48px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom-text {
  color: var(--color-text-dim);
  font-size: 0.8125rem;
}

@media (max-width: 640px) {
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}


/* ═══ NEWSLETTER BOX (Ayna Cam) ═══ */
.newsletter-box {
  background: var(--mirror-glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--color-border-strong);
  padding: 32px;
  border-radius: var(--radius-xl);
  color: var(--color-text-primary);
  box-shadow: var(--mirror-glass-shadow);
  position: relative;
  overflow: hidden;
}

.newsletter-box::before {
  content: "";
  position: absolute;
  inset: 1px;
  background: var(--mirror-glass-shine);
  pointer-events: none;
  opacity: 0.3;
}

.newsletter-box > * {
  position: relative;
  z-index: 2;
}

.newsletter-input-row {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.newsletter-input {
  flex: 1;
  padding: 12px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-strong);
  background-color: var(--color-bg-surface);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-weight: 500;
  transition: border-color var(--ease-base), background-color var(--ease-base);
}

.newsletter-input:focus {
  border-color: var(--color-orange);
  background-color: var(--color-white);
}

.newsletter-input:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 2px;
  border-color: var(--color-orange);
  background-color: var(--color-white);
}

.newsletter-input:focus:not(:focus-visible) {
  outline: none;
}

.newsletter-input::placeholder {
  color: var(--color-text-dim);
}

@media (max-width: 576px) {
  .newsletter-input-row {
    flex-direction: column;
  }
  .newsletter-input {
    width: 100%;
  }
}


/* ═══ SIDEBAR LAYOUT ═══ */
/* Flexbox fallback for layout-with-sidebar */
.layout-with-sidebar {
  display: flex;
  gap: 48px;
  align-items: start;
}

.layout-with-sidebar > :first-child {
  flex: 1 1 auto;
  min-width: 0;
}

.layout-with-sidebar > .sidebar {
  flex: 0 0 320px;
  max-width: 320px;
}

/* CSS Grid for modern browsers */
@supports (display: grid) {
  .layout-with-sidebar {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    align-items: start;
  }

  .layout-with-sidebar > :first-child {
    flex: none;
    min-width: 0;
  }

  .layout-with-sidebar > .sidebar {
    flex: none;
    max-width: none;
  }
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 96px;
}

.sidebar-widget {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.sidebar-widget::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.9) 50%, transparent 100%);
  pointer-events: none;
}

.sidebar-widget-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

@media (max-width: 1024px) {
  .layout-with-sidebar {
    gap: 32px;
  }

  .layout-with-sidebar > :first-child,
  .layout-with-sidebar > .sidebar {
    flex: 1 1 100%;
    max-width: none;
  }

  @supports (display: grid) {
    .layout-with-sidebar {
      grid-template-columns: 1fr;
      gap: 32px;
    }
  }

  .sidebar {
    position: static;
  }
}


/* ═══ PAGE HERO PANELS (Açık ton, ayna cam - mirror glass emerald) ═══ */
.calc-hub-hero,
.blog-hero,
.learn-hero,
.about-hero,
.contact-hero {
  position: relative;
  padding: 96px 24px 40px !important;
  margin-bottom: 32px !important;
  overflow: hidden;
  text-align: center;
  background: transparent;
}

.calc-hub-hero::before,
.blog-hero::before,
.learn-hero::before,
.about-hero::before,
.contact-hero::before {
  content: "";
  position: absolute;
  inset: 1px;
  background:
    radial-gradient(ellipse 60% 60% at 50% 0%, rgba(16, 185, 129, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 20% 30%, rgba(14, 165, 233, 0.10) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 50%, rgba(249, 115, 22, 0.08) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  animation: heroBgPulse 12s ease-in-out infinite;
  transform: translateZ(0);
  will-change: opacity;
}

@keyframes heroBgPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.calc-hub-hero > .container,
.blog-hero > .container,
.learn-hero > .container,
.about-hero > .container,
.contact-hero > .container {
  position: relative;
  z-index: 1;
  width: min(100%, 980px) !important;
  max-width: 980px !important;
  border-radius: var(--radius-2xl);
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.85) 0%, 
    rgba(236, 253, 245, 0.7) 35%,
    rgba(209, 250, 229, 0.5) 70%, 
    rgba(255, 255, 255, 0.85) 100%);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1.5px solid rgba(16, 185, 129, 0.6);
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    inset 0 -1px 0 rgba(16, 185, 129, 0.15),
    0 0 0 1px rgba(255, 255, 255, 0.6),
    0 12px 32px rgba(16, 185, 129, 0.15),
    0 0 0 1px rgba(15, 23, 42, 0.06);
  padding: 48px 40px !important;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: visible;
  transform: translateZ(0);
}

.calc-hub-hero > .container::before,
.blog-hero > .container::before,
.learn-hero > .container::before,
.about-hero > .container::before,
.contact-hero > .container::before {
  content: "";
  position: absolute;
  inset: 1px;
  background: var(--mirror-glass-shine);
  pointer-events: none;
  opacity: 0.5;
  z-index: 0;
  mix-blend-mode: overlay;
  border-radius: inherit;
}

.calc-hub-hero > .container > *,
.blog-hero > .container > *,
.learn-hero > .container > *,
.about-hero > .container > *,
.contact-hero > .container > * {
  position: relative;
  z-index: 2;
  max-width: 100%;
}

.calc-hub-hero h1,
.blog-hero h1,
.learn-hero h1,
.about-hero h1,
.contact-hero h1,
.calc-hub-hero .display-xl,
.blog-hero .display-lg,
.learn-hero .display-lg,
.about-hero .display-lg,
.contact-hero .display-lg {
  position: relative;
  z-index: 2;
  color: var(--color-text-primary) !important;
  font-size: clamp(1.5rem, 4vw, 2.25rem) !important;
  line-height: 1.2 !important;
  margin-bottom: 12px !important;
  text-align: center;
  max-width: 90%;
  overflow: visible;
}

.calc-hub-hero p,
.blog-hero p,
.learn-hero p,
.about-hero p,
.contact-hero p {
  position: relative;
  z-index: 2;
  color: var(--color-text-secondary) !important;
  max-width: 700px;
  font-size: clamp(0.875rem, 1.5vw, 1rem) !important;
  line-height: 1.6 !important;
  text-align: center;
  overflow: visible;
  margin: 0 auto;
}

/* Sabit yükseklik - sayfa geçişlerinde kayma yok */
@media (max-width: 1024px) {
  .calc-hub-hero > .container,
  .blog-hero > .container,
  .learn-hero > .container,
  .about-hero > .container,
  .contact-hero > .container {
    padding: 40px 32px !important;
  }
}

@media (max-width: 768px) {
  .calc-hub-hero,
  .blog-hero,
  .learn-hero,
  .about-hero,
  .contact-hero {
    padding: 88px 16px 28px !important;
  }

  .calc-hub-hero > .container,
  .blog-hero > .container,
  .learn-hero > .container,
  .about-hero > .container,
  .contact-hero > .container {
    padding: 32px 20px !important;
    border-radius: var(--radius-xl);
  }
}

@media (max-width: 480px) {
  .calc-hub-hero > .container,
  .blog-hero > .container,
  .learn-hero > .container,
  .about-hero > .container,
  .contact-hero > .container {
    padding: 28px 16px !important;
  }
}


/* ═══ LEGAL HERO (Disclaimer, Terms, Privacy) ═══ */
.legal-hero {
  position: relative;
  padding: 96px 24px 32px !important;
  margin-bottom: 32px !important;
  overflow: hidden;
  text-align: center;
  background: transparent;
}

.legal-hero::before {
  content: "";
  position: absolute;
  inset: 1px;
  background:
    radial-gradient(ellipse 60% 60% at 50% 0%, rgba(16, 185, 129, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 20% 30%, rgba(14, 165, 233, 0.10) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 50%, rgba(249, 115, 22, 0.08) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  animation: heroBgPulse 12s ease-in-out infinite;
  transform: translateZ(0);
  will-change: opacity;
}

.legal-hero > .container {
  position: relative;
  z-index: 1;
  width: min(100%, 980px) !important;
  max-width: 980px !important;
  height: 220px;
  min-height: 220px;
  max-height: 220px;
  border-radius: var(--radius-2xl);
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.85) 0%, 
    rgba(236, 253, 245, 0.7) 35%,
    rgba(209, 250, 229, 0.5) 70%, 
    rgba(255, 255, 255, 0.85) 100%);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(16, 185, 129, 0.7);
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    inset 0 -1px 0 rgba(16, 185, 129, 0.15),
    0 0 0 1px rgba(255, 255, 255, 0.6),
    0 12px 32px rgba(16, 185, 129, 0.15),
    0 0 0 1px rgba(15, 23,  42, 0.06);
  padding: 32px 40px !important;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transform: translateZ(0);
}

.legal-hero > .container::before {
  content: "";
  position: absolute;
  inset: 1px;
  background: var(--mirror-glass-shine);
  pointer-events: none;
  opacity: 0.5;
  z-index: 0;
  mix-blend-mode: overlay;
  border-radius: inherit;
}

.legal-hero > .container > * {
  position: relative;
  z-index: 2;
  max-width: 100%;
  overflow: hidden;
}

.legal-hero h1,
.legal-hero .legal-hero-title {
  font-family: var(--font-hero);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3rem) !important;
  line-height: 1.2 !important;
  letter-spacing: -0.02em;
  color: var(--color-text-primary) !important;
  margin-bottom: 12px !important;
  text-align: center;
  max-width: 90%;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.legal-hero p,
.legal-hero .legal-hero-desc {
  font-family: var(--font-hero);
  font-weight: 700 !important;
  color: var(--color-text-secondary) !important;
  max-width: 700px;
  font-size: clamp(1.125rem, 2vw, 1.25rem) !important;
  line-height: 1.55 !important;
  text-align: center;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0 auto;
}

@media (max-width: 1024px) {
  .legal-hero > .container {
    height: 200px;
    min-height: 200px;
    max-height: 200px;
  }
}

@media (max-width: 768px) {
  .legal-hero {
    padding: 88px 16px 28px !important;
  }
  .legal-hero > .container {
    height: 180px;
    min-height: 180px;
    max-height: 180px;
    padding: 20px !important;
  }
}

@media (max-width: 480px) {
  .legal-hero > .container {
    height: 170px;
    min-height: 170px;
    max-height: 170px;
  }
}


/* ═══ FEATURED ARTICLE CARD (Blog) - Ayna cam emerald ═══ */
.featured-article,
.featured-article-card,
.article-featured {
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.9) 0%, 
    rgba(236, 253, 245, 0.7) 50%, 
    rgba(255, 255, 255, 0.85) 100%) !important;
  backdrop-filter: blur(24px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(24px) saturate(180%) !important;
  border: 1.5px solid rgba(16, 185, 129, 0.25) !important;
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 1px 0 rgba(255, 255, 255, 0.8),
    0 16px 48px rgba(16, 185, 129, 0.18),
    0 0 0 1px rgba(15, 23, 42, 0.04) !important;
  color: var(--color-text-primary) !important;
  border-radius: var(--radius-2xl) !important;
  position: relative;
  overflow: hidden;
}

.featured-article::before,
.featured-article-card::before,
.article-featured::before {
  content: "";
  position: absolute;
  inset: 1px;
  background: var(--mirror-glass-shine);
  pointer-events: none;
  opacity: 0.5;
  z-index: 0;
  mix-blend-mode: overlay;
}

.featured-article *,
.featured-article-card *,
.article-featured * {
  position: relative;
  z-index: 2;
}

.featured-article h1,
.featured-article h2,
.featured-article h3,
.featured-article p,
.featured-article-card h1,
.featured-article-card h2,
.featured-article-card h3,
.featured-article-card p,
.article-featured h1,
.article-featured h2,
.article-featured h3,
.article-featured p {
  color: var(--color-text-primary) !important;
}


/* ═══ ANIMATIONS ═══ */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-24px); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Task 7.3: Dropdown slideDown animation
   Requirements: FR8 - Dropdown menu animation (150ms)
   Animation: opacity 0→1, translateY(-10px)→0, with centered positioning
   Note: translateX(-50%) maintains horizontal centering during animation */
@keyframes slideDown {
  from { 
    opacity: 0; 
    transform: translateX(-50%) translateY(-10px); 
  }
  to { 
    opacity: 1; 
    transform: translateX(-50%) translateY(0); 
  }
}

/* Task 7.4: Mobile menu slide-in animation
   Requirements: FR8 - Slide-in menu drawer from right side */
@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px rgba(249, 115, 22, 0.2); }
  50% { box-shadow: 0 0 40px rgba(249, 115, 22, 0.4); }
}

@keyframes drawLine {
  to { stroke-dashoffset: 0; }
}

@keyframes countUp {
  from { opacity: 0.4; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hero chart card - mirror glass emerald with subtle shine */
.hero-chart-card {
  transition: transform 400ms ease, box-shadow 400ms ease;
}

.hero-chart-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.6) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  animation: mirrorShine 4s ease-in-out infinite;
}

.hero-chart-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    transparent 30%, 
    rgba(255, 255, 255, 0.4) 50%, 
    transparent 70%);
  pointer-events: none;
  border-radius: var(--radius-2xl);
  mix-blend-mode: overlay;
  animation: mirrorGlide 6s ease-in-out infinite;
}

@keyframes mirrorShine {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.9; }
}

@keyframes mirrorGlide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.hero-chart-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 20px 60px rgba(16, 185, 129, 0.25),
    0 0 0 1px rgba(15, 23, 42, 0.04);
}

.hero-chart-card > * {
  position: relative;
  z-index: 2;
}

.animate-fade-in {
  animation: fadeIn 500ms ease both;
}

.animate-slide-up {
  animation: slideUp 600ms ease both;
}

.stagger-1 { animation-delay: 100ms; }
.stagger-2 { animation-delay: 200ms; }
.stagger-3 { animation-delay: 300ms; }
.stagger-4 { animation-delay: 400ms; }
.stagger-5 { animation-delay: 500ms; }

[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease, transform 600ms ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}


/* ═══ TOAST NOTIFICATION ═══ */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-primary);
  padding: 12px 20px;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.875rem;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.5) inset;
  z-index: var(--z-toast);
  opacity: 0;
  transition: all var(--ease-base);
  display: flex;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(20px);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success {
  border-color: var(--color-emerald);
  box-shadow: var(--shadow-lg), 0 0 20px var(--color-emerald-20);
}

.toast.error {
  border-color: var(--color-rose);
  box-shadow: var(--shadow-lg), 0 0 20px var(--color-rose-10);
}

.toast.info {
  border-color: var(--color-sea);
  box-shadow: var(--shadow-lg), 0 0 20px var(--color-sea-20);
}


/* ═══ LOADING INDICATOR - Slow Fetch Operations ═══ */
.cp-loading-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
}

.cp-loading-indicator.cp-loading-visible {
  opacity: 1;
}

.cp-loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(16, 185, 129, 0.1);
  border-top-color: var(--color-emerald);
  border-radius: 50%;
  animation: cp-spin 0.8s linear infinite;
}

@keyframes cp-spin {
  to {
    transform: rotate(360deg);
  }
}

.cp-loading-text {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  letter-spacing: 0.02em;
}

/* Loading indicator for navbar and footer placeholders */
#navbar-placeholder,
#footer-placeholder {
  position: relative;
}

/* Calculator page refresh layer
   Keeps calculator content intact while aligning hub and page heroes with the home theme. */
.calc-hub-hero,
.calculator-page-hero,
.legal-hero,
.about-hero,
.contact-hero {
  --page-hero-panel-height: 244px;
  position: relative;
  padding: 104px 24px 36px !important;
  margin-bottom: 32px !important;
  overflow: hidden;
  text-align: center;
  background: transparent !important;
}

.calc-hub-hero::before,
.calculator-page-hero::before,
.legal-hero::before,
.about-hero::before,
.contact-hero::before {
  content: "";
  position: absolute;
  inset: 1px;
  background:
    radial-gradient(ellipse 62% 58% at 50% 0%, rgba(16, 185, 129, 0.16) 0%, transparent 62%),
    radial-gradient(ellipse 45% 42% at 16% 34%, rgba(249, 115, 22, 0.11) 0%, transparent 62%),
    radial-gradient(ellipse 48% 38% at 86% 50%, rgba(14, 165, 233, 0.09) 0%, transparent 60%);
  pointer-events: none;
}

.calc-hub-hero > .container,
.calculator-page-hero > div,
.legal-hero > .container,
.about-hero > .container,
.contact-hero > .container {
  position: relative;
  z-index: 2;
  width: min(100%, 980px) !important;
  max-width: 980px !important;
  min-height: var(--page-hero-panel-height);
  margin-left: auto !important;
  margin-right: auto !important;
  padding: 38px 44px !important;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-2xl);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92) 0%, rgba(236, 253, 245, 0.74) 38%, rgba(254, 243, 199, 0.38) 72%, rgba(255, 255, 255, 0.9) 100%);
  border: 1.5px solid rgba(16, 185, 129, 0.34);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 18px 48px rgba(16, 185, 129, 0.12),
    0 0 0 1px rgba(15, 23, 42, 0.035);
  overflow: hidden;
}

.calc-hub-hero > .container::before,
.calculator-page-hero > div::before,
.legal-hero > .container::before,
.about-hero > .container::before,
.contact-hero > .container::before {
  content: "";
  position: absolute;
  inset: 1px;
  background: linear-gradient(105deg, transparent 18%, rgba(255, 255, 255, 0.54) 48%, transparent 72%);
  opacity: 0.55;
  pointer-events: none;
  transform: translateX(-24%);
}

.calc-hub-hero > .container > *,
.calculator-page-hero > div > *,
.legal-hero > .container > *,
.about-hero > .container > *,
.contact-hero > .container > * {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.calculator-page-hero h1,
.calc-hub-hero h1,
.legal-hero h1,
.about-hero h1,
.contact-hero h1 {
  margin: 0 0 12px !important;
  text-align: center;
}

.calculator-page-hero p,
.calc-hub-hero p,
.legal-hero p,
.about-hero p,
.contact-hero p {
  font-family: var(--font-hero) !important;
  font-weight: 700 !important;
  font-size: clamp(1.125rem, 2vw, 1.25rem) !important;
  line-height: 1.55 !important;
  margin-left: auto;
  margin-right: auto;
  color: var(--color-text-secondary) !important;
  text-align: center;
}

.calculator-page-hero .badge,
.calc-hub-hero .badge {
  margin-top: 0;
}

.calculator-page-hero > div > div[style*="display: flex"] {
  justify-content: center;
}

@media (max-width: 768px) {
  .calc-hub-hero,
  .calculator-page-hero,
  .legal-hero,
  .about-hero,
  .contact-hero {
    --page-hero-panel-height: 214px;
    padding: 88px 16px 28px !important;
  }

  .calc-hub-hero > .container,
  .calculator-page-hero > div,
  .legal-hero > .container,
  .about-hero > .container,
  .contact-hero > .container {
    padding: 30px 20px !important;
    border-radius: var(--radius-xl);
  }
}

/* 404 page alignment with refreshed page panels. */
.not-found-page {
  padding-top: 104px;
  padding-bottom: 56px;
}

.not-found-page .error-layout {
  width: min(100%, 980px);
  min-height: auto !important;
  margin: 0 auto;
  padding: 44px;
  border-radius: var(--radius-2xl);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94) 0%, rgba(236, 253, 245, 0.74) 38%, rgba(254, 243, 199, 0.36) 72%, rgba(255, 255, 255, 0.92) 100%);
  border: 1.5px solid rgba(16, 185, 129, 0.34);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 18px 48px rgba(16, 185, 129, 0.12),
    0 0 0 1px rgba(15, 23, 42, 0.035);
  overflow: hidden;
}

.not-found-page .error-layout::before {
  inset: 1px !important;
  background:
    radial-gradient(ellipse 46% 42% at 50% 0%, rgba(16, 185, 129, 0.14) 0%, transparent 62%),
    radial-gradient(ellipse 40% 36% at 18% 34%, rgba(249, 115, 22, 0.10) 0%, transparent 62%) !important;
}

.not-found-page .error-grid-link {
  border-radius: var(--radius-md) !important;
  border: 1px solid rgba(16, 185, 129, 0.22) !important;
  background: rgba(255, 255, 255, 0.72) !important;
}

.not-found-page .error-grid-link:hover {
  border-color: rgba(249, 115, 22, 0.48) !important;
  background: var(--color-orange-10) !important;
}

@media (max-width: 768px) {
  .not-found-page {
    padding-top: 88px;
    padding-bottom: 36px;
  }

  .not-found-page .error-layout {
    padding: 30px 20px;
    border-radius: var(--radius-xl);
  }
}

/* Site-wide home theme unification layer. */
html,
body {
  background-color: var(--color-bg-base, #FAFAF7) !important;
}

body {
  color: var(--color-text-primary) !important;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 1px;
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(249, 115, 22, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 100% 30%, rgba(16, 185, 129, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse 50% 30% at 50% 100%, rgba(14, 165, 233, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

.calc-hub-hero,
.calculator-page-hero,
.legal-hero,
.about-hero,
.contact-hero,
.blog-hero,
.learn-hero,
.article-header {
  --page-hero-panel-height: 244px;
  position: relative;
  padding: 104px 24px 36px !important;
  margin-bottom: 32px !important;
  overflow: hidden;
  text-align: center;
  background: transparent !important;
}

.calc-hub-hero::before,
.calculator-page-hero::before,
.legal-hero::before,
.about-hero::before,
.contact-hero::before,
.blog-hero::before,
.learn-hero::before,
.article-header::before {
  content: "";
  position: absolute;
  inset: 1px;
  background:
    radial-gradient(ellipse 62% 58% at 50% 0%, rgba(16, 185, 129, 0.16) 0%, transparent 62%),
    radial-gradient(ellipse 45% 42% at 16% 34%, rgba(249, 115, 22, 0.11) 0%, transparent 62%),
    radial-gradient(ellipse 48% 38% at 86% 50%, rgba(14, 165, 233, 0.09) 0%, transparent 60%);
  pointer-events: none;
}

.calc-hub-hero > .container,
.calculator-page-hero > div,
.legal-hero > .container,
.about-hero > .container,
.contact-hero > .container,
.blog-hero > .container,
.learn-hero > .container,
.article-header {
  position: relative;
  z-index: 2;
  width: min(100%, 980px) !important;
  max-width: 980px !important;
  min-height: var(--page-hero-panel-height);
  margin-left: auto !important;
  margin-right: auto !important;
  padding: 38px 44px !important;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-2xl);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92) 0%, rgba(236, 253, 245, 0.74) 38%, rgba(254, 243, 199, 0.38) 72%, rgba(255, 255, 255, 0.9) 100%) !important;
  border: 1.5px solid rgba(16, 185, 129, 0.34) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 18px 48px rgba(16, 185, 129, 0.12),
    0 0 0 1px rgba(15, 23, 42, 0.035) !important;
}

.blog-hero > .container::before,
.learn-hero > .container::before,
.article-header::after {
  content: "";
  position: absolute;
  inset: 1px;
  background: linear-gradient(105deg, transparent 18%, rgba(255, 255, 255, 0.54) 48%, transparent 72%);
  opacity: 0.55;
  pointer-events: none;
  transform: translateX(-24%);
  border-radius: inherit;
}

.blog-hero > .container > *,
.learn-hero > .container > *,
.article-header > * {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.blog-hero h1,
.learn-hero h1,
.article-title,
.article-header h1 {
  font-family: var(--font-hero) !important;
  font-weight: 800 !important;
  font-size: clamp(2rem, 5vw, 3.25rem) !important;
  color: var(--color-text-primary) !important;
  text-align: center !important;
  margin: 0 0 12px !important;
}

.blog-hero p,
.learn-hero p,
.article-subtitle,
.article-header p {
  font-family: var(--font-hero) !important;
  font-weight: 700 !important;
  font-size: clamp(1.125rem, 2vw, 1.25rem) !important;
  line-height: 1.55 !important;
  color: var(--color-text-secondary) !important;
  text-align: center !important;
  margin-left: auto;
  margin-right: auto;
}

.post-card,
.learn-card,
.article-content,
.sidebar-widget,
.related-posts .learn-card,
.blog-card,
.article-card,
.contact-form-container,
.about-card,
.error-grid-link {
  border-radius: var(--radius-xl) !important;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.96) 0%, rgba(236, 253, 245, 0.72) 36%, rgba(254, 243, 199, 0.34) 72%, rgba(255, 255, 255, 0.92) 100%) !important;
  border: 1.5px solid rgba(16, 185, 129, 0.30) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 10px 30px rgba(16, 185, 129, 0.08),
    0 0 0 1px rgba(15, 23, 42, 0.035) !important;
}

.post-card:hover,
.learn-card:hover,
.sidebar-widget:hover,
.blog-card:hover,
.article-card:hover,
.error-grid-link:hover {
  transform: none !important;
  border-color: rgba(249, 115, 22, 0.70) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 16px 42px rgba(16, 185, 129, 0.13),
    0 0 24px rgba(249, 115, 22, 0.08) !important;
}

.article-content {
  color: var(--color-text-primary) !important;
}

.article-content p,
.article-content li,
.article-content td,
.article-content strong {
  color: var(--color-text-secondary) !important;
}

.article-content h2,
.article-content h3,
.learn-card-title,
.post-card-title {
  color: var(--color-text-primary) !important;
}

.share-btn,
.blog-filter-btn,
.filter-btn,
.error-grid-link {
  border-radius: var(--radius-md) !important;
  border: 1px solid rgba(16, 185, 129, 0.24) !important;
  background: rgba(255, 255, 255, 0.72) !important;
  color: var(--color-text-secondary) !important;
  box-shadow: none !important;
}

.share-btn:hover,
.blog-filter-btn:hover,
.blog-filter-btn.active,
.filter-btn:hover,
.filter-btn.active,
.error-grid-link:hover {
  background: var(--color-orange-10) !important;
  border-color: rgba(249, 115, 22, 0.48) !important;
  color: var(--color-orange-2) !important;
}

@media (max-width: 768px) {
  .blog-hero,
  .learn-hero,
  .article-header {
    --page-hero-panel-height: 214px;
    padding: 88px 16px 28px !important;
  }

  .blog-hero > .container,
  .learn-hero > .container,
  .article-header {
    padding: 30px 20px !important;
    border-radius: var(--radius-xl);
  }
}

/* Blog/learn background parity with the home hero. */
.blog-hero,
.learn-hero {
  background:
    radial-gradient(ellipse 80% 50% at 0% 0%, rgba(16, 185, 129, 0.14) 0%, transparent 48%),
    radial-gradient(ellipse 62% 42% at 18% 4%, rgba(249, 115, 22, 0.10) 0%, transparent 48%),
    radial-gradient(ellipse 50% 30% at 42% 78%, rgba(14, 165, 233, 0.06) 0%, transparent 54%),
    var(--color-bg-base, #FAFAF7) !important;
}

.blog-hero::before,
.learn-hero::before {
  opacity: 0 !important;
  background: transparent !important;
}

.blog-hero > .container,
.learn-hero > .container {
  background: rgba(255, 255, 255, 0.58) !important;
  border-color: rgba(16, 185, 129, 0.24) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.85),
    0 18px 48px rgba(16, 185, 129, 0.08),
    0 0 0 1px rgba(15, 23, 42, 0.025) !important;
  backdrop-filter: blur(10px) saturate(130%);
  -webkit-backdrop-filter: blur(10px) saturate(130%);
}

.blog-hero > .container::before,
.learn-hero > .container::before {
  opacity: 0.18 !important;
}

/* Global background parity: match the cleaner legal/disclaimer page atmosphere. */
html,
body {
  background: var(--color-bg-base, #FAFAF7) !important;
  background-color: var(--color-bg-base, #FAFAF7) !important;
}

body::before {
  content: "" !important;
  position: fixed !important;
  inset: 1px !important;
  background:
    radial-gradient(ellipse 72% 42% at 50% 0%, rgba(16, 185, 129, 0.095) 0%, transparent 58%),
    radial-gradient(ellipse 48% 38% at 18% 20%, rgba(249, 115, 22, 0.055) 0%, transparent 58%),
    radial-gradient(ellipse 46% 34% at 82% 35%, rgba(14, 165, 233, 0.045) 0%, transparent 58%),
    var(--color-bg-base, #FAFAF7) !important;
  pointer-events: none !important;
  z-index: -1 !important;
}

.hero,
.calc-hub-hero,
.calculator-page-hero,
.legal-hero,
.about-hero,
.contact-hero,
.blog-hero,
.learn-hero,
.article-header {
  background:
    radial-gradient(ellipse 72% 42% at 50% 0%, rgba(16, 185, 129, 0.095) 0%, transparent 58%),
    radial-gradient(ellipse 48% 38% at 18% 20%, rgba(249, 115, 22, 0.055) 0%, transparent 58%),
    radial-gradient(ellipse 46% 34% at 82% 35%, rgba(14, 165, 233, 0.045) 0%, transparent 58%),
    var(--color-bg-base, #FAFAF7) !important;
}

.hero-bg-orbs,
.calc-hub-hero-orbs {
  opacity: 0.16 !important;
}

.hero-orb,
.calc-hub-orb {
  filter: blur(120px) !important;
  opacity: 0.08 !important;
}

.hero-orb-1,
.calc-hub-orb-1 {
  background: radial-gradient(circle, rgba(249, 115, 22, 0.35) 0%, transparent 72%) !important;
}

.hero-orb-2,
.calc-hub-orb-2 {
  background: radial-gradient(circle, rgba(16, 185, 129, 0.26) 0%, transparent 72%) !important;
}

.hero-orb-3,
.calc-hub-orb-3 {
  background: radial-gradient(circle, rgba(14, 165, 233, 0.18) 0%, transparent 72%) !important;
}

.blog-hero > .container,
.learn-hero > .container,
.calc-hub-hero > .container,
.calculator-page-hero > div,
.legal-hero > .container,
.about-hero > .container,
.contact-hero > .container,
.article-header {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.74) 0%, rgba(236, 253, 245, 0.34) 42%, rgba(254, 243, 199, 0.22) 74%, rgba(255, 255, 255, 0.72) 100%) !important;
}


/* ═══ MODAL CLOSE OVERRIDE (beats inline .btn position:relative !important) ═══ */
.modal-close,
.modal-close.btn {
  position: absolute !important;
  top: 16px !important;
  right: 16px !important;
  z-index: 2;
}