/* ============================================
   ABC App Studios — Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Colors */
  --color-bg: #0a0f1a;
  --color-bg-card: rgba(255, 255, 255, 0.04);
  --color-bg-card-hover: rgba(255, 255, 255, 0.08);
  --color-surface: #111827;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(0, 191, 165, 0.3);
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-text-subtle: #64748b;
  --color-primary: #00bfa5;
  --color-primary-light: #1de9b6;
  --color-primary-dark: #00897b;
  --color-accent: #7c3aed;
  --color-accent-light: #a78bfa;
  --color-star: #fbbf24;
  --color-google-play: #01875f;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0a0f1a 0%, #0d1f2d 40%, #0a1628 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  --gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(0, 191, 165, 0.15) 0%, transparent 60%);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Borders & Shadows */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(0, 191, 165, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Reset & Base
   ============================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-light);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ============================================
   Layout
   ============================================ */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-4xl) 0;
}

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

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--spacing-md) 0;
  background: rgba(10, 15, 26, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: white;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-xs);
}

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--gradient-hero);
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-glow);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 191, 165, 0.08) 0%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
  animation: heroGlow 6s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { opacity: 0.5; transform: translateX(-50%) scale(1); }
  100% { opacity: 1; transform: translateX(-50%) scale(1.2); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  padding: var(--spacing-xl);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(0, 191, 165, 0.1);
  border: 1px solid rgba(0, 191, 165, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.6s ease-out;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.6s ease-out 0.15s both;
}

.hero-title .gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--spacing-2xl);
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-2xl);
  background: var(--gradient-accent);
  color: white;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-base);
  animation: fadeInUp 0.6s ease-out 0.45s both;
  text-decoration: none;
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 191, 165, 0.3);
  color: white;
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-subtle);
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: fadeInUp 0.6s ease-out 0.6s both;
}

.scroll-indicator .arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--color-text-subtle);
  border-bottom: 2px solid var(--color-text-subtle);
  transform: rotate(45deg);
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(6px); }
}

/* ============================================
   Apps Section
   ============================================ */

.apps-section {
  position: relative;
  background: var(--color-bg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-md);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   App Cards Grid
   ============================================ */

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.app-card {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  transition: all var(--transition-slow);
  overflow: hidden;
  will-change: transform;
}

.app-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 191, 165, 0.05) 0%, rgba(124, 58, 237, 0.03) 100%);
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}

.app-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-glow);
}

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

.app-card-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-slow);
}

.app-card:hover .app-card-icon {
  transform: scale(1.05);
}

.app-card-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.app-card-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(0, 191, 165, 0.1);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.02em;
}

.app-card-badge.kids {
  background: rgba(251, 191, 36, 0.1);
  color: var(--color-star);
}

.app-card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.app-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
}

.app-card-rating {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.stars {
  display: flex;
  gap: 2px;
}

.star {
  color: var(--color-star);
  font-size: var(--font-size-sm);
}

.star.empty {
  color: var(--color-text-subtle);
}

.rating-value {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}

.app-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--color-google-play);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.app-card-link:hover {
  background: #019d51;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(1, 135, 95, 0.3);
  color: white;
}

.app-card-link svg {
  width: 18px;
  height: 18px;
}

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

.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-2xl) 0;
  background: rgba(10, 15, 26, 0.95);
}

.footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

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

.footer-copy {
  font-size: var(--font-size-sm);
  color: var(--color-text-subtle);
}

.footer-email {
  color: var(--color-primary) !important;
}

/* ============================================
   Privacy Policy Page
   ============================================ */

.policy-page {
  padding-top: 100px;
  padding-bottom: var(--spacing-4xl);
}

.policy-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border);
}

.policy-header h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
}

.policy-header .last-updated {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.policy-header .policy-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(0, 191, 165, 0.1);
  border: 1px solid rgba(0, 191, 165, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.02em;
}

.policy-content {
  max-width: 800px;
  margin: 0 auto;
}

.policy-content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-top: var(--spacing-3xl);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.policy-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.policy-content p {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.policy-content ul, .policy-content ol {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-xl);
  line-height: 1.8;
}

.policy-content li {
  margin-bottom: var(--spacing-sm);
}

.policy-content strong {
  color: var(--color-text);
  font-weight: 600;
}

.policy-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.policy-toc {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.policy-toc h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-top: 0;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.policy-toc ol {
  padding-left: var(--spacing-lg);
}

.policy-toc li {
  margin-bottom: var(--spacing-xs);
}

.policy-toc a {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  text-decoration: none;
}

.policy-toc a:hover {
  color: var(--color-primary);
}

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

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

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

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

@media (max-width: 768px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(10, 15, 26, 0.95);
    backdrop-filter: blur(20px);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    gap: var(--spacing-md);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

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

  .section {
    padding: var(--spacing-3xl) 0;
  }

  .policy-header h1 {
    font-size: var(--font-size-2xl);
  }

  .footer-links {
    flex-direction: column;
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  .app-card {
    padding: var(--spacing-lg);
  }
}