/* ========================================
   Software Release Site - Full Enhanced Design
   ======================================== */

/* CSS Variables - Light Mode */
:root {
  /* Colors */
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F1F5F9;
  --color-border: #E2E8F0;
  --color-border-hover: #CBD5E1;
  --color-text-primary: #0F172A;
  --color-text-secondary: #475569;
  --color-text-tertiary: #94A3B8;
  --color-accent: #06B6D4;
  --color-accent-hover: #4F46E5;
  --color-accent-light: #EEF2FF;
  --color-accent-glow: rgba(99, 102, 241, 0.15);
  --color-amber: #F59E0B;
  --color-amber-light: #FEF3C7;
  --color-success: #10B981;
  --color-success-light: #D1FAE5;
  --color-error: #EF4444;
  --color-error-light: #FEE2E2;
  --color-new: #EF4444;

  /* Typography */
  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Dark Mode */
[data-theme="dark"] {
  --color-bg: #0F172A;
  --color-surface: #1E293B;
  --color-surface-hover: #334155;
  --color-border: #334155;
  --color-border-hover: #475569;
  --color-text-primary: #F1F5F9;
  --color-text-secondary: #94A3B8;
  --color-text-tertiary: #64748B;
  --color-accent-light: #312E81;
  --color-accent-glow: rgba(99, 102, 241, 0.25);
  --color-amber-light: #451A03;
  --color-success-light: #064E3B;
  --color-error-light: #450A0A;
}

/* Light mode selection */
::selection {
  background: rgba(6, 182, 212, 0.2);
  color: var(--color-text-primary);
}

[data-theme="dark"] ::selection {
  background: var(--color-accent);
  color: white;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
  background: var(--color-bg);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: var(--color-border);
}

[data-theme="dark"] body::before {
  background-image:
    radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(6, 182, 212, 0.05) 0%, transparent 30%);
}

/* Dark mode enhanced shadows */
[data-theme="dark"] {
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.5);
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  transition: background-color var(--transition-slow), color var(--transition-slow);
  position: relative;
  overflow-x: hidden;
}

/* Skip Link (Accessibility) */
.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-3) var(--space-6);
  background: var(--color-accent);
  color: white;
  font-weight: 600;
  border-radius: var(--radius-md);
  z-index: 9999;
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: var(--space-4);
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Subtle background pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(6, 182, 212, 0.02) 0%, transparent 30%);
  pointer-events: none;
  z-index: -1;
}

/* Noise texture overlay */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.015;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: -1;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
}

/* Container */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  transition: all var(--transition-slow);
}

[data-theme="dark"] .navbar {
  background: rgba(15, 23, 42, 0.8);
  border-bottom: 1px solid rgba(51, 65, 85, 0.6);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: var(--space-6);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--color-text-primary);
  transition: opacity var(--transition-fast);
}

.navbar-brand:hover {
  opacity: 0.8;
}

.navbar-brand svg {
  width: 34px;
  height: 34px;
  filter: drop-shadow(0 2px 4px rgba(6, 182, 212, 0.2));
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.navbar-nav a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.navbar-nav a:hover {
  color: var(--color-text-primary);
  background: var(--color-surface-hover);
}

.navbar-nav a.active {
  color: var(--color-accent);
  background: var(--color-accent-light);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
}

.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
}

.theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: block;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
  position: relative;
  padding: var(--space-16) 0 var(--space-12);
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  left: -10%;
  width: 120%;
  height: 160%;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(6, 182, 212, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 70% 10%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(ellipse 50% 30% at 20% 20%, rgba(6, 182, 212, 0.1) 0%, transparent 40%);
  pointer-events: none;
  animation: heroGlow 8s ease-in-out infinite;
}

@keyframes heroGlow {
  0%, 100% { opacity: 1; transform: scale(1) rotate(0deg); }
  50% { opacity: 0.85; transform: scale(1.03) rotate(1deg); }
}

/* Floating particles */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(2px 2px at 20% 30%, rgba(6, 182, 212, 0.3), transparent),
    radial-gradient(2px 2px at 40% 70%, rgba(99, 102, 241, 0.2), transparent),
    radial-gradient(2px 2px at 60% 40%, rgba(6, 182, 212, 0.25), transparent),
    radial-gradient(2px 2px at 80% 60%, rgba(99, 102, 241, 0.15), transparent),
    radial-gradient(1px 1px at 10% 80%, rgba(6, 182, 212, 0.2), transparent),
    radial-gradient(1px 1px at 90% 20%, rgba(99, 102, 241, 0.2), transparent);
  animation: particleFloat 20s linear infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes particleFloat {
  0% { transform: translateY(0) translateX(0); opacity: 0.6; }
  25% { transform: translateY(-20px) translateX(10px); opacity: 1; }
  50% { transform: translateY(-10px) translateX(-5px); opacity: 0.8; }
  75% { transform: translateY(-30px) translateX(15px); opacity: 0.9; }
  100% { transform: translateY(0) translateX(0); opacity: 0.6; }
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-accent);
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12) 0%, rgba(6, 182, 212, 0.06) 100%);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.6s ease-out;
  position: relative;
  overflow: hidden;
}

.hero-badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.15), transparent);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

.hero-badge svg {
  width: 14px;
  height: 14px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(44px, 8vw, 72px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--color-accent) 0%, #0891B2 40%, #6366F1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  background-size: 200% 200%;
  animation: gradientShift 5s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin: 0 auto var(--space-10);
  animation: fadeInUp 0.6s ease-out 0.2s both;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-12);
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-stat {
  text-align: center;
  position: relative;
}

.hero-stat::after {
  content: '';
  position: absolute;
  right: calc(var(--space-6) * -1);
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, transparent, var(--color-border), transparent);
}

.hero-stat:last-child::after {
  display: none;
}

.hero-stat-value {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ========================================
   Featured Section
   ======================================== */

.featured-section {
  padding: 0 0 var(--space-8);
}

.featured-card {
  display: flex;
  gap: var(--space-8);
  padding: var(--space-8);
  background: linear-gradient(135deg, var(--color-accent) 0%, #0891B2 50%, #6366F1 100%);
  border-radius: var(--radius-xl);
  color: white;
  animation: fadeInUp 0.5s ease-out;
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.4s ease;
}

.featured-card:hover {
  box-shadow: 0 20px 60px rgba(6, 182, 212, 0.15);
}

.featured-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 15%, rgba(255,255,255,0.2) 0%, transparent 50%);
  pointer-events: none;
  transition: opacity 0.4s ease;
}


.featured-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
}

.featured-icon {
  flex-shrink: 0;
  width: 96px;
  height: 96px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.1) 100%);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.featured-card:hover .featured-icon {
  transform: scale(1.1);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.featured-content {
  flex: 1;
  position: relative;
  z-index: 1;
}

.featured-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.featured-badge svg {
  width: 12px;
  height: 12px;
}

.featured-title {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.featured-desc {
  font-size: 15px;
  opacity: 0.9;
  margin-bottom: var(--space-5);
  line-height: 1.7;
  max-width: 500px;
}

.featured-actions {
  display: flex;
  gap: var(--space-3);
}

.featured-actions .btn {
  background: white;
  color: var(--color-accent);
  font-weight: 700;
  padding: 12px 24px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.featured-actions .btn:hover {
  background: rgba(255, 255, 255, 0.95);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.featured-actions .btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.featured-actions .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* Dark mode featured card */
[data-theme="dark"] .featured-card {
  background: linear-gradient(135deg, #0891B2 0%, #0e7490 50%, #4338ca 100%);
}

/* Featured Carousel */
.featured-carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  touch-action: pan-y pinch-zoom;
}

/* Animated gradient background */
.featured-carousel {
  background:
    radial-gradient(ellipse 80% 60% at 20% 80%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(99, 102, 241, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, var(--color-surface) 0%, rgba(241, 245, 249, 0.95) 100%);
}

[data-theme="dark"] .featured-carousel {
  background:
    radial-gradient(ellipse 80% 60% at 20% 80%, rgba(6, 182, 212, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    linear-gradient(180deg, var(--color-surface) 0%, rgba(15, 23, 42, 0.98) 100%);
}

/* Animated mesh gradient overlay */
.carousel-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.carousel-bg::before,
.carousel-bg::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.6;
  animation: meshFloat 12s ease-in-out infinite;
}

.carousel-bg::before {
  background: radial-gradient(circle, rgba(6, 182, 212, 0.4) 0%, rgba(99, 102, 241, 0.2) 50%, transparent 70%);
  top: -150px;
  left: -150px;
}

.carousel-bg::after {
  background: radial-gradient(circle, rgba(99, 102, 241, 0.35) 0%, rgba(6, 182, 212, 0.15) 50%, transparent 70%);
  bottom: -150px;
  right: -150px;
  animation-delay: -6s;
}

@keyframes meshFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -20px) scale(1.05); }
  50% { transform: translate(-10px, 20px) scale(0.95); }
  75% { transform: translate(20px, 10px) scale(1.02); }
}

/* Grid pattern overlay */
.carousel-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(6, 182, 212, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6, 182, 212, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: center;
  z-index: 1;
  opacity: 0.8;
}

[data-theme="dark"] .carousel-bg-grid {
  background-image:
    linear-gradient(rgba(6, 182, 212, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6, 182, 212, 0.04) 1px, transparent 1px);
}

.carousel-container {
  display: flex;
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  z-index: 2;
}

.carousel-slide {
  flex: 0 0 100%;
  min-width: 100%;
  position: relative;
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.carousel-slide .featured-card {
  border-radius: 0;
}

.carousel-slide:first-child .featured-card {
  border-radius: var(--radius-xl);
}

/* Slide shadow effect */
.carousel-slide::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.05) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.carousel-slide.active::after {
  opacity: 1;
}

.carousel-controls {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding: 0 var(--space-5);
  pointer-events: none;
  z-index: 10;
}

.carousel-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  color: var(--color-text-secondary);
  pointer-events: auto;
  opacity: 0;
  transform: scale(0.9);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
}

.featured-carousel:hover .carousel-btn {
  opacity: 0.8;
  transform: scale(1);
}

.carousel-btn:hover {
  background: white;
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: scale(1.12) !important;
  opacity: 1 !important;
  box-shadow: 0 8px 32px rgba(6, 182, 212, 0.25);
}

.carousel-btn:active {
  transform: scale(0.95);
}

.carousel-btn svg {
  width: 24px;
  height: 24px;
}

.carousel-indicators {
  position: absolute;
  bottom: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(4px);
  border-radius: var(--radius-full);
  box-shadow: none;
  z-index: 10;
}

[data-theme="dark"] .carousel-btn {
  background: rgba(30, 41, 59, 0.9);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .carousel-btn:hover {
  background: rgba(51, 65, 85, 0.95);
  border-color: var(--color-accent);
  box-shadow: 0 8px 32px rgba(6, 182, 212, 0.3);
}

[data-theme="dark"] .carousel-indicators {
  background: rgba(30, 41, 59, 0.35);
  box-shadow: none;
}

.carousel-indicator {
  width: 8px;
  height: 8px;
  background: rgba(255, 255, 255, 0.3);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
  opacity: 0.4;
}

.carousel-indicator:hover {
  background: rgba(255, 255, 255, 0.5);
  transform: scale(1.2);
  opacity: 0.6;
}

.carousel-indicator.active {
  width: 24px;
  background: rgba(255, 255, 255, 0.9);
  border-color: transparent;
  transform: scale(1);
  opacity: 0.8;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Touch hint animation */
.carousel-touch-hint {
  position: absolute;
  bottom: 70px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.8);
  opacity: 0;
  animation: touchHintFade 3s ease-in-out infinite;
  pointer-events: none;
  z-index: 5;
}

@keyframes touchHintFade {
  0%, 100% { opacity: 0; transform: translateX(-50%) translateX(-10px); }
  50% { opacity: 0.7; transform: translateX(-50%) translateX(0); }
}

/* ========================================
   Software Section
   ======================================== */

.section {
  padding: var(--space-8) 0 var(--space-16);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #6366F1);
  border-radius: var(--radius-full);
}

.section-title svg {
  width: 28px;
  height: 28px;
  color: var(--color-accent);
}

.section-count {
  font-size: 14px;
  color: var(--color-text-tertiary);
  background: var(--color-surface);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
}

/* Filter Bar */
.filter-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-slow);
}

[data-theme="dark"] .filter-bar {
  background: rgba(30, 41, 59, 0.6);
  border-color: rgba(51, 65, 85, 0.6);
}

.filter-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.filter-row:first-child {
  align-items: center;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.search-box input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  padding-left: 44px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-text-primary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  outline: none;
  transition: all var(--transition-base);
}

.search-box input::placeholder {
  color: var(--color-text-tertiary);
}

.search-box input:focus {
  border-color: var(--color-accent);
  background: var(--color-surface);
  box-shadow:
    0 0 0 3px rgba(6, 182, 212, 0.1),
    0 4px 12px rgba(0, 0, 0, 0.05);
}

.search-box svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--color-text-tertiary);
  transition: color var(--transition-fast);
}

.search-box input:focus + svg {
  color: var(--color-accent);
}

.search-box input:focus ~ .search-clear {
  opacity: 1;
}

.search-clear {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  opacity: 0;
  transition: all var(--transition-fast);
  color: var(--color-text-tertiary);
}

.search-clear:hover {
  background: var(--color-accent);
  color: white;
}

/* Sort Dropdown */
.sort-dropdown {
  position: relative;
}

.sort-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.sort-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.sort-btn svg {
  width: 16px;
  height: 16px;
}

.sort-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 160px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
}

.sort-dropdown.open .sort-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.sort-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: 14px;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
}

.sort-option:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}

.sort-option.active {
  color: var(--color-accent);
  font-weight: 500;
}

.sort-option .check {
  width: 16px;
  height: 16px;
  opacity: 0;
}

.sort-option.active .check {
  opacity: 1;
}

/* Tag Filter */
.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.tag-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-accent) 0%, #6366F1 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.tag-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.15);
}

.tag-btn:hover::before {
  opacity: 0.05;
}

.tag-btn.active {
  background: linear-gradient(135deg, var(--color-accent) 0%, #0891B2 100%);
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(6, 182, 212, 0.3);
}

.tag-btn.active:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

.tag-btn .count {
  font-size: 10px;
  font-weight: 700;
  opacity: 0.6;
  background: rgba(0, 0, 0, 0.1);
  padding: 2px 6px;
  border-radius: var(--radius-full);
}

.tag-btn.active .count {
  background: rgba(255, 255, 255, 0.2);
  opacity: 1;
}

/* Software Grid */
.software-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-5);
}

/* Software Card */
.software-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
  animation: fadeInUp 0.5s ease-out both;
  overflow: hidden;
}

.software-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #6366F1);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.software-card:hover {
  border-color: rgba(6, 182, 212, 0.4);
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.12),
    0 0 0 1px rgba(6, 182, 212, 0.15),
    0 0 30px rgba(6, 182, 212, 0.08);
  transform: translateY(-6px);
}

.software-card:hover::before {
  opacity: 1;
}

.card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.card-icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-accent-light) 0%, rgba(99, 102, 241, 0.1) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  border: 1px solid rgba(6, 182, 212, 0.1);
  position: relative;
  overflow: hidden;
}

.card-icon::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(6, 182, 212, 0.1) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.software-card:hover .card-icon {
  transform: scale(1.1);
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow: 0 8px 24px rgba(6, 182, 212, 0.2);
}

.software-card:hover .card-icon::before {
  opacity: 1;
}

.card-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* Dark mode card enhancements */
[data-theme="dark"] .software-card {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.8) 0%, rgba(30, 41, 59, 0.6) 100%);
  border-color: rgba(51, 65, 85, 0.6);
}

[data-theme="dark"] .software-card:hover {
  border-color: rgba(6, 182, 212, 0.4);
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.9) 0%, rgba(30, 41, 59, 0.7) 100%);
}

[data-theme="dark"] .card-icon {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(99, 102, 241, 0.1) 100%);
  border-color: rgba(6, 182, 212, 0.15);
}

.card-info {
  flex: 1;
  min-width: 0;
}

.card-title-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.card-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.card-new {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  color: white;
  background: var(--color-new);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.card-version {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.card-rating {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-2);
  font-size: 13px;
  color: var(--color-text-secondary);
}

.card-rating svg {
  width: 14px;
  height: 14px;
  color: var(--color-amber);
  fill: var(--color-amber);
}

/* Card Tags */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}

.card-tag {
  font-size: 10px;
  font-weight: 500;
  color: var(--color-text-tertiary);
  background: var(--color-bg);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.card-description {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.card-platforms {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.platform-tag {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.card-stats {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: 12px;
  color: var(--color-text-tertiary);
}

.card-stats span {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.card-stats svg {
  width: 14px;
  height: 14px;
}

.card-actions {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 18px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.btn:hover svg {
  transform: translateY(1px);
}

.btn-primary {
  flex: 1;
  background: linear-gradient(135deg, var(--color-accent) 0%, #0891B2 100%);
  color: white;
  box-shadow: 0 4px 16px rgba(6, 182, 212, 0.25);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0891B2 0%, var(--color-accent) 100%);
  box-shadow: 0 6px 24px rgba(6, 182, 212, 0.35);
  transform: translateY(-2px);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: linear-gradient(135deg, var(--color-accent-light) 0%, rgba(99, 102, 241, 0.05) 100%);
  transform: translateY(-1px);
}

.btn-copy {
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  padding: 10px 12px;
}

.btn-copy:hover {
  border-color: var(--color-success);
  color: var(--color-success);
}

.btn-copy.copied {
  border-color: var(--color-success);
  color: var(--color-success);
  background: var(--color-success-light);
}

.btn-copy svg {
  width: 16px;
  height: 16px;
}

/* ========================================
   Focus States (Accessibility)
   ======================================== */

.btn:focus-visible,
.tag-btn:focus-visible,
.sort-btn:focus-visible,
.sort-option:focus-visible,
.theme-toggle:focus-visible,
.carousel-btn:focus-visible,
.carousel-indicator:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ========================================
   Skeleton Loading
   ======================================== */

.skeleton {
  background: linear-gradient(90deg, var(--color-surface) 25%, var(--color-surface-hover) 50%, var(--color-surface) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-md);
}

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

.skeleton-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
}

.skeleton-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #6366F1, var(--color-accent));
  animation: skeletonProgress 1.5s ease-in-out infinite;
}

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

.skeleton-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-lg);
}

.skeleton-title {
  height: 20px;
  width: 60%;
  margin-bottom: var(--space-2);
}

.skeleton-text {
  height: 14px;
  margin-bottom: var(--space-2);
}

.skeleton-text:last-child {
  width: 80%;
}

.skeleton-btn {
  height: 40px;
  margin-top: var(--space-4);
}

/* ========================================
   Detail Page
   ======================================== */

.detail-page {
  padding: var(--space-8) 0 var(--space-16);
}

.detail-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  transition: color var(--transition-fast);
}

.detail-back:hover {
  color: var(--color-accent);
}

.detail-back svg {
  width: 18px;
  height: 18px;
}

.detail-header {
  display: flex;
  gap: var(--space-8);
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.5s ease-out;
  transition: background-color var(--transition-slow), border-color var(--transition-slow);
}

.detail-icon {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  background: var(--color-accent-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
}

.detail-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.detail-info {
  flex: 1;
}

.detail-title {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.detail-title h1 {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
}

.detail-title .badge {
  font-family: var(--font-mono);
  font-size: 14px;
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-6);
  margin-bottom: var(--space-4);
  font-size: 14px;
  color: var(--color-text-secondary);
}

.detail-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.detail-meta-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-text-tertiary);
}

.detail-description {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.detail-downloads {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 14px;
  color: var(--color-success);
  background: var(--color-success-light);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
}

/* Download Section */
.detail-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-5);
  animation: fadeInUp 0.5s ease-out 0.1s both;
  transition: background-color var(--transition-slow), border-color var(--transition-slow);
}

.detail-section-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--space-5);
}

.detail-section-title svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
}

.download-platforms {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-3);
}

.download-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.download-btn:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

.download-btn-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.download-btn-platform {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.download-btn-size {
  font-size: 12px;
  color: var(--color-text-tertiary);
}

.download-btn svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
}

.download-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

/* Version History */
.version-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.version-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.version-item:hover {
  background: var(--color-surface-hover);
}

.version-item.latest {
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent);
}

.version-number {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  min-width: 70px;
}

.version-date {
  font-size: 13px;
  color: var(--color-text-tertiary);
  min-width: 90px;
}

.version-changes {
  flex: 1;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.version-badge {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  color: white;
  background: var(--color-accent);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

/* Features List */
.features-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-3);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--color-bg);
  border-radius: var(--radius-md);
}

.feature-item svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  color: var(--color-success);
  margin-top: 2px;
}

.feature-item span {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* System Requirements */
.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
}

.requirement-item {
  padding: var(--space-4);
  background: var(--color-bg);
  border-radius: var(--radius-md);
}

.requirement-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-2);
}

.requirement-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
}

/* Related Software */
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}

.related-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.related-card:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

.related-icon {
  width: 48px;
  height: 48px;
  background: var(--color-accent-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.related-info {
  flex: 1;
  min-width: 0;
}

.related-name {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.related-version {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-accent);
}

/* ========================================
   Footer
   ======================================== */

.footer {
  padding: var(--space-12) 0;
  border-top: 1px solid var(--color-border);
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
  transition: all var(--transition-slow);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--color-text-primary);
  transition: opacity var(--transition-fast);
}

.footer-brand:hover {
  opacity: 0.7;
}

.footer-brand svg {
  width: 26px;
  height: 26px;
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  position: relative;
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-links a:hover::after {
  width: 100%;
}

.footer-copy {
  font-size: 13px;
  color: var(--color-text-tertiary);
}

/* ========================================
   Empty State & Loading
   ======================================== */

.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  animation: fadeInUp 0.5s ease-out;
}

.empty-state svg {
  width: 80px;
  height: 80px;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-5);
  opacity: 0.5;
  animation: emptyFloat 3s ease-in-out infinite;
}

@keyframes emptyFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.empty-state h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.empty-state p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-16);
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Error State */
.error-state {
  text-align: center;
  padding: var(--space-8);
  background: var(--color-error-light);
  border: 1px solid var(--color-error);
  border-radius: var(--radius-lg);
  color: var(--color-error);
}

.error-state svg {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-4);
}

/* Toast */
.toast {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: var(--space-4) var(--space-6);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, #334155 100%);
  color: white;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  z-index: 9999;
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

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

.toast::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: var(--radius-full);
  animation: toastPulse 1s ease-in-out infinite;
}

@keyframes toastPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.8; }
}

/* ========================================
   Animations
   ======================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }

  .navbar-inner {
    height: 56px;
  }

  .navbar-nav {
    display: none;
  }

  .hero {
    padding: var(--space-10) 0 var(--space-8);
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-stats {
    gap: var(--space-6);
  }

  .hero-stat-value {
    font-size: 24px;
  }

  .featured-card {
    flex-direction: column;
    text-align: center;
  }

  .featured-icon {
    margin: 0 auto;
  }

  .featured-actions {
    justify-content: center;
  }

  .filter-row {
    flex-direction: column;
  }

  .search-box {
    width: 100%;
  }

  .sort-dropdown {
    width: 100%;
  }

  .sort-btn {
    width: 100%;
    justify-content: space-between;
  }

  .sort-menu {
    width: 100%;
    left: 0;
    right: 0;
  }

  .software-grid {
    grid-template-columns: 1fr;
  }

  .detail-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-5);
  }

  .detail-icon {
    width: 100px;
    height: 100px;
    font-size: 48px;
  }

  .detail-title {
    flex-direction: column;
    gap: var(--space-2);
  }

  .detail-meta {
    justify-content: center;
  }

  .download-platforms {
    grid-template-columns: 1fr;
  }

  .download-actions {
    flex-direction: column;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
  }
}

@media (max-width: 480px) {
  .card-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .card-meta {
    justify-content: center;
  }

  .card-stats {
    justify-content: center;
  }

  .card-actions {
    flex-direction: column;
  }
}

/* ========================================
   Reduced Motion (Accessibility)
   ======================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hero::before,
  .hero::after {
    animation: none;
  }

  .hero-badge::before {
    animation: none;
  }

  .carousel-container {
    transition: none;
  }
}