/* ==========================================================================
   Amsunaris & Apps Shared Design System
   Modern Light & Dark Theme System
   ========================================================================== */

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

:root {
  /* Theme: Default Light Mode (Matixo clean slate aesthetic) */
  --bg-main: #f8fafc;
  --bg-subtle: #f1f5f9;
  --bg-radial: radial-gradient(circle at 50% 0%, #e2e8f0 0%, #f8fafc 70%);
  --header-bg: rgba(255, 255, 255, 0.85);
  
  --card-bg: #ffffff;
  --card-bg-hover: #f8fafc;
  --card-border: #e2e8f0;
  --card-border-glow: rgba(99, 102, 241, 0.3);

  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #e0e7ff;
  --primary-text: #ffffff;
  
  --accent: #059669;
  --accent-hover: #047857;
  --accent-light: #d1fae5;
  
  --warning: #d97706;
  --warning-light: #fef3c7;
  
  --coral: #e07a5f;
  --coral-light: rgba(224, 122, 95, 0.12);
  
  --sky: #0284c7;
  --sky-light: rgba(14, 165, 233, 0.12);
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;

  --hero-title-grad: linear-gradient(135deg, #0f172a 30%, #475569 100%);
  --btn-primary-grad: linear-gradient(135deg, #4f46e5 0%, #3730a3 100%);
  --btn-primary-hover-grad: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  --btn-primary-shadow: 0 8px 20px rgba(79, 70, 229, 0.25);
  --btn-secondary-bg: #ffffff;
  --btn-secondary-border: #cbd5e1;
  --btn-secondary-text: #0f172a;
  --btn-secondary-hover-bg: #f1f5f9;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 16px 36px rgba(15, 23, 42, 0.1);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;

  --transition-fast: 0.18s ease;
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  /* Theme: Dark Mode */
  --bg-main: #0c0e14;
  --bg-subtle: #12151f;
  --bg-radial: radial-gradient(circle at 50% 0%, #1c2133 0%, #0c0e14 60%);
  --header-bg: rgba(12, 14, 20, 0.85);

  --card-bg: #181c28;
  --card-bg-hover: #202536;
  --card-border: #282f44;
  --card-border-glow: rgba(99, 102, 241, 0.4);

  --primary: #818cf8;
  --primary-hover: #6366f1;
  --primary-light: rgba(129, 140, 248, 0.15);
  --primary-text: #ffffff;
  
  --accent: #34d399;
  --accent-hover: #10b981;
  --accent-light: rgba(52, 211, 153, 0.15);
  
  --warning: #fbbf24;
  --warning-light: rgba(251, 191, 36, 0.15);
  
  --coral: #e07a5f;
  --coral-light: rgba(224, 122, 95, 0.15);

  --sky: #38bdf8;
  --sky-light: rgba(56, 189, 248, 0.15);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --hero-title-grad: linear-gradient(135deg, #ffffff 40%, #94a3b8 100%);
  --btn-primary-grad: linear-gradient(135deg, #6366f1 0%, #4338ca 100%);
  --btn-primary-hover-grad: linear-gradient(135deg, #818cf8 0%, #6366f1 100%);
  --btn-primary-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
  --btn-secondary-bg: rgba(255, 255, 255, 0.06);
  --btn-secondary-border: var(--card-border);
  --btn-secondary-text: var(--text-main);
  --btn-secondary-hover-bg: rgba(255, 255, 255, 0.12);

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.55);
}

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

html {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-radial);
  background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--card-border);
  transition: background-color var(--transition-smooth), border-color var(--transition-smooth);
}

.nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  transition: transform var(--transition-fast);
}

.brand-link:hover {
  transform: translateY(-1px);
}

.brand-logo {
  display: none; /* Prepared for new logo: currently hidden while logo is empty/transparent */
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 12px;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
}

.nav-link:hover {
  color: var(--text-main);
  background-color: var(--bg-subtle);
}

.nav-link.active {
  color: var(--primary);
  background-color: var(--primary-light);
  font-weight: 600;
}

/* Theme Toggle Button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-left: 4px;
}

.theme-toggle:hover {
  color: var(--text-main);
  border-color: var(--primary);
  background: var(--bg-subtle);
  transform: translateY(-1px);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.theme-toggle .moon-icon {
  display: block;
}

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

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

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

/* Breadcrumb Navigation */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.breadcrumbs .separator {
  color: var(--text-dim);
}

.breadcrumbs .current {
  color: var(--text-main);
  font-weight: 600;
}

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

.hero {
  padding: 60px 24px 40px;
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--primary-light);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 18px;
  background: var(--hero-title-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 660px;
  margin: 0 auto 32px;
  font-weight: 400;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   Buttons & Badges
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.98rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-smooth);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--btn-primary-grad);
  color: var(--primary-text);
  box-shadow: var(--btn-primary-shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--btn-primary-hover-grad);
  box-shadow: 0 12px 28px rgba(79, 70, 229, 0.35);
  color: #ffffff;
}

.btn-secondary {
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  border: 1px solid var(--btn-secondary-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--btn-secondary-hover-bg);
  border-color: var(--text-dim);
  transform: translateY(-2px);
  color: var(--text-main);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
}

.badge-primary {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.badge-accent {
  background: var(--accent-light);
  color: var(--accent);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-warning {
  background: var(--warning-light);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-coral {
  background: var(--coral-light);
  color: var(--coral);
  border: 1px solid rgba(224, 122, 95, 0.25);
}

.badge-sky {
  background: var(--sky-light);
  color: var(--sky);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

/* ==========================================================================
   Layout Containers & Grid
   ========================================================================== */

.main-content {
  flex: 1;
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.section {
  margin-top: 60px;
}

.section-header {
  text-align: center;
  margin-bottom: 36px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
  color: var(--text-main);
}

.section-description {
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto;
  font-size: 1.02rem;
  line-height: 1.6;
}

.grid {
  display: grid;
  gap: 28px;
}

.grid-cols-2 {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.grid-cols-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-cols-4 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

/* ==========================================================================
   App Card Component
   ========================================================================== */

.app-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.app-card:hover {
  transform: translateY(-4px);
  border-color: var(--card-border-glow);
  box-shadow: var(--shadow-lg);
}

.app-card-banner {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid var(--card-border);
  background-color: var(--bg-subtle);
}

.app-card-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.app-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.app-card-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--card-border);
  object-fit: contain;
  background-color: var(--bg-subtle);
}

.app-card-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-main);
}

.app-card-tagline {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.app-card-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 22px;
  line-height: 1.6;
}

.app-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.app-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  border-top: 1px solid var(--card-border);
  gap: 12px;
}

/* ==========================================================================
   Feature Cards
   ========================================================================== */

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-smooth);
  box-shadow: var(--shadow-sm);
}

.feature-card:hover {
  background: var(--card-bg-hover);
  border-color: var(--card-border-glow);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 14px;
  display: inline-block;
}

.feature-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.feature-text {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

/* Mini-Game Showcase Cards */
.game-mode-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
}

.game-mode-card:hover {
  transform: translateY(-2px);
  border-color: var(--card-border-glow);
  box-shadow: var(--shadow-md);
}

.game-mode-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid var(--card-border);
}

.game-mode-icon-wrap img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

/* ==========================================================================
   Screenshots Gallery
   ========================================================================== */

.gallery-container {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 16px 4px 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--card-border) transparent;
  scroll-snap-type: x mandatory;
}

.gallery-container::-webkit-scrollbar {
  height: 8px;
}

.gallery-container::-webkit-scrollbar-thumb {
  background-color: var(--card-border);
  border-radius: 4px;
}

.gallery-item {
  flex: 0 0 240px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
  scroll-snap-align: start;
  background-color: var(--card-bg);
}

.gallery-item:hover {
  transform: translateY(-6px) scale(1.02);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
}

.doc-back-nav {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
}

.doc-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background-color: var(--btn-secondary-bg);
  border: 1px solid var(--btn-secondary-border);
  color: var(--btn-secondary-text);
  border-radius: var(--radius-full);
  font-weight: 500;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.doc-back-link:hover {
  background-color: var(--btn-secondary-hover-bg);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateX(-3px);
}

.legal-container {
  max-width: 880px;
  margin: 40px auto;
  padding: 40px 36px;
  background-color: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-md);
}

.legal-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--card-border);
}

.legal-title {
  color: var(--primary);
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.legal-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.last-updated {
  display: inline-block;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 20px;
  font-weight: 500;
}

.legal-body h1 {
  font-size: 1.8rem;
  color: var(--text-main);
  margin-top: 36px;
  margin-bottom: 16px;
}

.legal-body h2 {
  color: var(--primary);
  font-size: 1.4rem;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 8px;
  margin-top: 36px;
  margin-bottom: 16px;
}

.legal-body h3 {
  font-size: 1.15rem;
  color: var(--text-main);
  margin-top: 24px;
  margin-bottom: 10px;
}

.legal-body h4 {
  font-size: 1.02rem;
  color: var(--text-muted);
  margin-top: 20px;
  margin-bottom: 8px;
}

.legal-body p, .legal-body li {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.legal-body p {
  margin-bottom: 16px;
}

.legal-body ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-body li {
  margin-bottom: 8px;
}

.legal-body hr {
  border: none;
  border-top: 1px solid var(--card-border);
  margin: 32px 0;
}

.legal-body code {
  background: var(--bg-subtle);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9em;
  color: var(--primary);
  border: 1px solid var(--card-border);
}

.legal-body a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.legal-body a:hover {
  text-decoration: underline;
}

.table-wrapper {
  overflow-x: auto;
  margin: 20px 0;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

th, td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--card-border);
}

th {
  background: var(--bg-subtle);
  font-weight: 600;
  color: var(--text-main);
}

td {
  color: var(--text-muted);
}

tr:last-child td {
  border-bottom: none;
}

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

.site-footer {
  border-top: 1px solid var(--card-border);
  background-color: var(--bg-subtle);
  padding: 40px 24px 30px;
  margin-top: auto;
  transition: background-color var(--transition-smooth), border-color var(--transition-smooth);
}

.footer-container {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.footer-nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

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

.footer-copy {
  color: var(--text-dim);
  font-size: 0.85rem;
}

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

@media (max-width: 768px) {
  .hero {
    padding: 40px 16px 30px;
  }
  
  .legal-container {
    padding: 24px 20px;
    margin: 20px 12px;
  }
  
  .nav-container {
    padding: 12px 16px;
  }

  .nav-links {
    gap: 6px;
  }

  .nav-link {
    padding: 6px 8px;
    font-size: 0.88rem;
  }
  
  .app-card-body {
    padding: 20px;
  }

  .gallery-item {
    flex: 0 0 190px;
  }
}