/* ═══════════════════════════════════════════════════════
   Bubbles — "Midnight Glass" Design System
   Matches the app's luxury aesthetic exactly.
   ═══════════════════════════════════════════════════════ */

/* ── Design Tokens ── */
:root {
  /* Ink (Dark) */
  --ink-950: #0C0A09;
  --ink-900: #1C1917;
  --ink-800: #292524;
  --ink-700: #44403C;
  --ink-600: #57534E;

  /* Gold */
  --gold-600: #A16207;
  --gold-500: #CA8A04;
  --gold-400: #F0B429;
  --gold-300: #FCD34D;

  /* Paper (Light) */
  --paper-50: #FAFAF9;
  --paper-100: #F5F5F4;
  --paper-200: #E7E5E4;

  /* Glass */
  --glass-fill: rgba(255, 255, 255, 0.06);
  --glass-fill-hover: rgba(255, 255, 255, 0.10);
  --glass-border: rgba(255, 255, 255, 0.10);
  --glass-border-hover: rgba(255, 255, 255, 0.18);
  --glass-highlight: rgba(255, 255, 255, 0.08);

  /* Text */
  --text-primary: #FAFAF9;
  --text-secondary: #A8A29E;
  --text-muted: #78716C;

  /* Semantic */
  --destructive: #DC2626;
  --success: #16A34A;

  /* Gradients */
  --gold-gradient: linear-gradient(135deg, var(--gold-300), var(--gold-500), var(--gold-600));
  --gold-gradient-text: linear-gradient(135deg, var(--gold-300), var(--gold-400), var(--gold-500));
  --bg-gradient: linear-gradient(180deg, var(--ink-950) 0%, var(--ink-900) 50%, var(--ink-950) 100%);
  --hero-gradient: radial-gradient(ellipse at 50% 30%, rgba(240, 180, 41, 0.08) 0%, transparent 60%);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  /* Typography */
  --font-display: 'Cormorant Garamond', 'Georgia', serif;
  --font-body: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
}

/* ── 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-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--ink-950);
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--gold-400);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--gold-300);
}

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

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  letter-spacing: -0.5px;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.25px;
  margin-bottom: var(--space-lg);
}

h3 {
  font-size: 1.25rem;
  font-family: var(--font-body);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

p {
  color: var(--text-secondary);
  max-width: 65ch;
}

.label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--gold-400);
}

/* ── Gold Gradient Text ── */
.gold-text {
  background: var(--gold-gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Glass Card ── */
.glass {
  background: var(--glass-fill);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
}

.glass:hover {
  background: var(--glass-fill-hover);
  border-color: var(--glass-border-hover);
}

.glass-strong {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  border: none;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-spring);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn-gold {
  background: var(--gold-gradient);
  color: var(--ink-950);
  box-shadow: 0 4px 24px rgba(240, 180, 41, 0.3), 0 0 0 1px rgba(240, 180, 41, 0.2);
}

.btn-gold:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 32px rgba(240, 180, 41, 0.4), 0 0 0 1px rgba(240, 180, 41, 0.3);
}

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

.btn-glass {
  background: var(--glass-fill);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-glass:hover {
  background: var(--glass-fill-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-1px);
}

/* ── Header / Nav ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(12, 10, 9, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--duration-normal);
}

.site-header .logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.site-header .logo .orb {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gold-gradient);
  animation: breathe 3s ease-in-out infinite;
}

.site-header nav {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.site-header nav a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

.site-header nav a:hover {
  color: var(--gold-400);
}

/* ── Hero Section ── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-4xl) var(--space-xl);
  position: relative;
}

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

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}

/* Breathing Orb */
.orb-large {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--space-xl);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%,
    rgba(252, 211, 77, 0.9),
    var(--gold-400),
    var(--gold-500),
    var(--gold-600)
  );
  box-shadow:
    0 0 60px rgba(240, 180, 41, 0.3),
    0 0 120px rgba(240, 180, 41, 0.15),
    inset 0 -4px 12px rgba(0, 0, 0, 0.2);
  animation: breathe 3s ease-in-out infinite;
  position: relative;
}

.orb-large::after {
  content: '';
  position: absolute;
  top: 18%;
  left: 22%;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  filter: blur(2px);
}

@keyframes breathe {
  0%, 100% {
    transform: scale(0.94);
    box-shadow: 0 0 40px rgba(240, 180, 41, 0.25), 0 0 80px rgba(240, 180, 41, 0.1);
  }
  50% {
    transform: scale(1.06);
    box-shadow: 0 0 80px rgba(240, 180, 41, 0.4), 0 0 160px rgba(240, 180, 41, 0.2);
  }
}

.hero h1 {
  margin-bottom: var(--space-md);
}

.hero .subtitle {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--gold-300);
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.hero .tagline {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
}

/* Floating Bubbles (decorative — full-page, fixed) */
.floating-bubbles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 40%, transparent 100%);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 40%, transparent 100%);
}

.floating-bubble {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%,
    rgba(255, 255, 255, 0.12),
    rgba(255, 255, 255, 0.04),
    transparent
  );
  border: 1px solid rgba(255, 255, 255, 0.08);
  animation: float linear infinite;
}

.floating-bubble:nth-child(1) { width: 80px; height: 80px; left: 10%; animation-duration: 18s; animation-delay: 0s; }
.floating-bubble:nth-child(2) { width: 50px; height: 50px; left: 25%; animation-duration: 22s; animation-delay: -4s; }
.floating-bubble:nth-child(3) { width: 120px; height: 120px; left: 60%; animation-duration: 25s; animation-delay: -8s; }
.floating-bubble:nth-child(4) { width: 40px; height: 40px; left: 80%; animation-duration: 15s; animation-delay: -2s; }
.floating-bubble:nth-child(5) { width: 70px; height: 70px; left: 45%; animation-duration: 20s; animation-delay: -6s; }
.floating-bubble:nth-child(6) { width: 35px; height: 35px; left: 90%; animation-duration: 17s; animation-delay: -10s; }

@keyframes float {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    transform: translateY(-100px) rotate(360deg);
    opacity: 0;
  }
}

/* ── Sections ── */
.section {
  padding: var(--space-4xl) var(--space-xl);
  position: relative;
}

.section-inner {
  max-width: 1000px;
  margin: 0 auto;
}

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

.section-header .label {
  margin-bottom: var(--space-sm);
  display: block;
}

/* ── Feature Grid ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-spring);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(240, 180, 41, 0.2);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(240, 180, 41, 0.1);
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(240, 180, 41, 0.1);
  border: 1px solid rgba(240, 180, 41, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: all var(--duration-normal) var(--ease-spring);
}

.feature-card:hover .feature-icon {
  background: rgba(240, 180, 41, 0.15);
  transform: scale(1.1);
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--gold-400);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-card h3 {
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Game Modes Section ── */
.modes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.mode-card {
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-spring);
}

.mode-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gold-gradient);
  opacity: 0;
  transition: opacity var(--duration-normal);
}

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

.mode-card:hover {
  transform: translateY(-4px);
}

.mode-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold-400);
  margin-bottom: var(--space-sm);
}

.mode-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.mode-card p {
  font-size: 0.9rem;
}

/* ── CTA Section ── */
.cta-section {
  text-align: center;
  padding: var(--space-4xl) var(--space-xl);
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(240, 180, 41, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section .orb-small {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  border-radius: 50%;
  background: var(--gold-gradient);
  animation: breathe 3s ease-in-out infinite;
  box-shadow: 0 0 40px rgba(240, 180, 41, 0.3);
}

/* ── Footer ── */
.site-footer {
  padding: var(--space-2xl) var(--space-xl);
  border-top: 1px solid var(--glass-border);
  text-align: center;
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

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

.footer-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--duration-fast);
}

.footer-links a:hover {
  color: var(--gold-400);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Legal Pages ── */
.legal-page {
  max-width: 720px;
  margin: 0 auto;
  padding: calc(80px + var(--space-3xl)) var(--space-xl) var(--space-3xl);
}

.legal-page h1 {
  margin-bottom: var(--space-lg);
}

.legal-page h2 {
  font-family: var(--font-body);
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  color: var(--gold-400);
}

.legal-page p,
.legal-page li {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.legal-page ul,
.legal-page ol {
  padding-left: var(--space-lg);
}

.legal-page li {
  margin-bottom: var(--space-sm);
}

.legal-page strong {
  color: var(--text-primary);
  font-weight: 600;
}

.legal-page a {
  color: var(--gold-400);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-page a:hover {
  color: var(--gold-300);
}

.legal-card {
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.legal-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--gold-400);
  margin-bottom: var(--space-sm);
}

.legal-nav {
  margin-top: var(--space-3xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--glass-border);
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.legal-nav a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* ── Scroll Reveal Animation ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--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; }

/* ── Step List (Data Deletion) ── */
.step-list {
  list-style: none;
  padding: 0;
  counter-reset: steps;
}

.step-list li {
  counter-increment: steps;
  padding: var(--space-md) var(--space-md) var(--space-md) 56px;
  position: relative;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-sm);
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
}

.step-list li::before {
  content: counter(steps);
  position: absolute;
  left: var(--space-md);
  top: var(--space-md);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gold-gradient);
  color: var(--ink-950);
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Warning Callout ── */
.callout {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--gold-400);
  background: rgba(240, 180, 41, 0.06);
  margin: var(--space-lg) 0;
}

.callout p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .site-header {
    padding: var(--space-md);
  }

  .site-header nav {
    gap: var(--space-md);
  }

  .site-header nav a {
    font-size: 0.8rem;
  }

  .hero {
    padding: var(--space-3xl) var(--space-md);
    min-height: 90vh;
  }

  .orb-large {
    width: 80px;
    height: 80px;
  }

  .section {
    padding: var(--space-3xl) var(--space-md);
  }

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

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

  .btn {
    padding: 12px 24px;
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .site-header .logo span {
    display: none;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero .subtitle {
    font-size: 0.8rem;
    letter-spacing: 1.5px;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
  }

  .floating-bubble {
    display: none;
  }
}