/* ============================================
   BEIT KAVKAZ — MODERN DESIGN SYSTEM
   Dark luxurious theme for Mountain Jewish heritage
   ============================================ */

/* --- Design Tokens --- */
:root {
  /* Backgrounds */
  --bg-deep: #0a0a0f;
  --bg-base: #111118;
  --bg-raised: #1a1a24;
  --bg-surface: #222233;

  /* Accents */
  --gold: #D4A843;
  --gold-light: #e8c96e;
  --gold-dim: #a07e2e;
  --amber: #F59E0B;
  --amber-dim: #c77d08;
  --teal: #2DD4BF;
  --teal-dim: #1a9e8f;
  --coral: #F97316;
  --coral-dim: #c55a0e;

  /* Text */
  --text-primary: #f0ece4;
  --text-secondary: rgba(240, 236, 228, 0.7);
  --text-muted: rgba(240, 236, 228, 0.45);

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-hover: rgba(255, 255, 255, 0.1);
  --glass-blur: 16px;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 200ms;
  --duration-base: 400ms;
  --duration-slow: 700ms;

  /* Layout */
  --container-max: 1200px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-deep);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: 'Outfit', sans-serif;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-weight: 800; }
h2 { font-weight: 700; letter-spacing: -0.03em; }
h3 { font-weight: 600; }

/* --- Container --- */
.container {
  width: min(var(--container-max), 100% - var(--space-lg) * 2);
  margin-inline: auto;
}

/* --- Section --- */
.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

/* Section separator — gradient divider between sections */
.section + .section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--gold-dim) 25%, var(--amber) 50%, var(--gold-dim) 75%, transparent 100%);
  opacity: 0.5;
  z-index: 5;
}

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

.section__eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: var(--space-sm);
  display: block;
}

.section__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--gold-light) 40%, var(--amber) 70%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-sm);
}

.section__subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-inline: auto;
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 100ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 200ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 300ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 400ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: 500ms; opacity: 1; transform: translateY(0); }

/* --- Glass Card --- */
.glass {
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0, 0, 0, .3), 0 0 40px rgba(212, 168, 67, .08);
  transition: box-shadow var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out),
              border-color var(--duration-base);
}

.glass:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, .4), 0 0 60px rgba(212, 168, 67, .15);
}

/* =============================
   NAVIGATION
   ============================= */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--duration-base) var(--ease-out),
              backdrop-filter var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.nav-header.scrolled {
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10, 10, 15, 0.85);
  border-bottom-color: var(--glass-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold) 0%, var(--amber) 50%, var(--gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: color var(--duration-fast), background var(--duration-fast), transform var(--duration-fast);
  position: relative;
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  transform: scale(1.02);
}

.nav__link--gateway {
  color: var(--teal);
  font-size: 0.85rem;
}

.nav__link--gateway:hover {
  color: var(--teal);
  background: rgba(45, 212, 191, 0.1);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1001;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-fast);
}

.nav__toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* =============================
   HERO
   ============================= */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-deep);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: url('../../assets/images/caucasus_hero.png') center/cover no-repeat;
  transform: scale(1.05);
  transition: transform 0.1s linear;
  will-change: transform;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      rgba(10, 10, 15, 0.6) 0%,
      rgba(10, 10, 15, 0.4) 40%,
      rgba(10, 10, 15, 0.7) 70%,
      rgba(10, 10, 15, 0.95) 100%
    ),
    linear-gradient(135deg,
      rgba(212, 168, 67, 0.08) 0%,
      transparent 50%
    ),
    linear-gradient(225deg,
      rgba(245, 158, 11, 0.06) 0%,
      transparent 40%
    );
  z-index: 1;
}

/* CSS-only particles */
.hero__particles {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  overflow: hidden;
}

.hero__particles span {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--gold);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat linear infinite;
}

.hero__particles span:nth-child(1) { left: 10%; animation-duration: 8s; animation-delay: 0s; }
.hero__particles span:nth-child(2) { left: 20%; animation-duration: 12s; animation-delay: 2s; }
.hero__particles span:nth-child(3) { left: 35%; animation-duration: 10s; animation-delay: 4s; width: 2px; height: 2px; }
.hero__particles span:nth-child(4) { left: 50%; animation-duration: 14s; animation-delay: 1s; }
.hero__particles span:nth-child(5) { left: 65%; animation-duration: 9s; animation-delay: 3s; width: 2px; height: 2px; }
.hero__particles span:nth-child(6) { left: 75%; animation-duration: 11s; animation-delay: 5s; }
.hero__particles span:nth-child(7) { left: 85%; animation-duration: 13s; animation-delay: 2.5s; width: 4px; height: 4px; }
.hero__particles span:nth-child(8) { left: 45%; animation-duration: 15s; animation-delay: 6s; width: 2px; height: 2px; }
.hero__particles span:nth-child(9) { left: 90%; animation-duration: 10s; animation-delay: 0.5s; }
.hero__particles span:nth-child(10) { left: 5%; animation-duration: 11s; animation-delay: 3.5s; width: 4px; height: 4px; }

@keyframes particleFloat {
  0% {
    transform: translateY(100vh) scale(0);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  50% {
    opacity: 0.3;
  }
  90% {
    opacity: 0.5;
  }
  100% {
    transform: translateY(-10vh) scale(1);
    opacity: 0;
  }
}

.hero__content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: var(--space-xl) 0;
  max-width: 800px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.4rem 1.2rem;
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--gold);
  border: 1px solid rgba(212, 168, 67, 0.3);
  background: rgba(212, 168, 67, 0.08);
  margin-bottom: var(--space-lg);
  animation: fadeInDown 1s var(--ease-out) 0.2s both;
}

.hero__title {
  font-size: clamp(2.75rem, 7vw, 5rem);
  line-height: 1.05;
  margin-bottom: var(--space-md);
  animation: fadeInUp 1s var(--ease-out) 0.4s both;
}

/* Hero text shimmer — subtle gradient sweep */
.hero__title-gradient {
  background: linear-gradient(
    105deg,
    var(--text-primary) 0%,
    var(--text-primary) 30%,
    var(--amber) 45%,
    var(--gold-light) 55%,
    var(--gold) 70%,
    var(--text-primary) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: heroShimmer 6s ease-in-out infinite 1.5s;
}

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

.hero__subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  font-weight: 400;
  animation: fadeInUp 1s var(--ease-out) 0.6s both;
}

.hero__subtitle em {
  font-style: normal;
  color: var(--teal);
  font-weight: 500;
}

.hero__actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s var(--ease-out) 0.8s both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  transition: all var(--duration-base) var(--ease-out);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn--gold {
  background: linear-gradient(135deg, var(--gold) 0%, var(--amber-dim) 50%, var(--gold-dim) 100%);
  color: var(--bg-deep);
}

.btn--gold:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 30px rgba(212, 168, 67, 0.35);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}

.btn--outline:hover {
  background: var(--glass-bg);
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px) scale(1.02);
}

.btn--teal {
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-dim) 100%);
  color: var(--bg-deep);
}

.btn--teal:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 30px rgba(45, 212, 191, 0.3);
}

/* =============================
   ABOUT
   ============================= */
.about {
  background: var(--bg-base);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.about__text p {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  margin-bottom: var(--space-md);
  line-height: 1.75;
}

.about__text p:first-child {
  font-size: 1.1875rem;
  color: var(--text-primary);
  font-weight: 500;
}

.about__stats {
  display: grid;
  gap: var(--space-sm);
}

.stat-card {
  padding: var(--space-md) var(--space-lg);
  position: relative;
  overflow: hidden;
  transition: transform var(--duration-base) var(--ease-out),
              border-color var(--duration-base),
              box-shadow var(--duration-base) var(--ease-out);
}

.stat-card:hover {
  transform: translateY(-4px) scale(1.02);
  border-color: rgba(212, 168, 67, 0.3);
}

.stat-card__glow {
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(212, 168, 67, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.stat-card__label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: 0.35rem;
}

.stat-card__value {
  font-family: 'Outfit', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-card__note {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* =============================
   LEARN JUHURI — CENTERPIECE
   ============================= */
.learn {
  background: var(--bg-deep);
  position: relative;
}

.learn::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(212, 168, 67, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

/* Category Tabs */
.learn__tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.learn__tab {
  padding: 0.6rem 1.5rem;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid transparent;
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
  background: var(--glass-bg);
}

.learn__tab:hover {
  color: var(--text-primary);
  background: var(--glass-hover);
  transform: scale(1.02);
}

.learn__tab.active {
  color: var(--bg-deep);
  background: var(--gold);
  border-color: var(--gold);
  font-weight: 600;
}

/* Flashcard Grid */
.learn__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  perspective: 1200px;
}

/* Flashcard */
.flashcard {
  aspect-ratio: 4/3;
  cursor: pointer;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.6s var(--ease-out);
}

.flashcard.flipped {
  transform: rotateY(180deg);
}

/* Animated gradient border on hover */
.flashcard::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-md) + 2px);
  background: conic-gradient(from 0deg, var(--gold), var(--amber), var(--teal), var(--gold-light), var(--gold));
  opacity: 0;
  z-index: -1;
  transition: opacity var(--duration-base) var(--ease-out);
  animation: flashcardBorderSpin 4s linear infinite;
}

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

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

.flashcard:hover {
  transform: translateY(-8px);
}

.flashcard.flipped:hover {
  transform: rotateY(180deg) translateY(-8px);
}

.flashcard__face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  border: 1px solid var(--glass-border);
  transition: border-color var(--duration-base),
              box-shadow var(--duration-base) var(--ease-out);
}

.flashcard:hover .flashcard__face--front {
  border-color: rgba(212, 168, 67, 0.4);
  box-shadow: 0 12px 40px rgba(0, 0, 0, .4), 0 0 50px rgba(212, 168, 67, .12);
}

.flashcard__face--front {
  background: linear-gradient(145deg, var(--bg-raised) 0%, var(--bg-surface) 100%);
}

.flashcard__face--back {
  background: linear-gradient(145deg, rgba(212, 168, 67, 0.12) 0%, var(--bg-raised) 100%);
  transform: rotateY(180deg);
  border-color: rgba(212, 168, 67, 0.25);
}

.flashcard__cyrillic {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.flashcard__transliteration {
  font-size: 1rem;
  color: var(--gold);
  font-weight: 500;
  font-style: italic;
}

.flashcard__flip-hint {
  position: absolute;
  bottom: 0.75rem;
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.flashcard__english {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(1.375rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--gold-light);
  margin-bottom: var(--space-xs);
}

.flashcard__note {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* =============================
   HERITAGE TIMELINE
   ============================= */
.timeline {
  background: var(--bg-base);
  overflow: hidden;
}

.timeline__track {
  display: flex;
  gap: var(--space-lg);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: var(--space-lg) var(--space-md) var(--space-xl);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--gold-dim) var(--bg-raised);
  position: relative;
}

.timeline__track::-webkit-scrollbar {
  height: 6px;
}

.timeline__track::-webkit-scrollbar-track {
  background: var(--bg-raised);
  border-radius: 3px;
}

.timeline__track::-webkit-scrollbar-thumb {
  background: var(--gold-dim);
  border-radius: 3px;
}

/* Connecting line — animated gradient fill */
.timeline__line {
  position: absolute;
  top: 40px;
  left: var(--space-md);
  right: var(--space-md);
  height: 2px;
  background: linear-gradient(90deg,
    var(--gold-dim) 0%,
    var(--amber) 25%,
    var(--gold) 50%,
    var(--amber) 75%,
    var(--gold-dim) 100%
  );
  background-size: 200% 100%;
  animation: timelineLineFill 6s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

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

.timeline__node {
  flex: 0 0 300px;
  scroll-snap-align: start;
  position: relative;
  z-index: 1;
}

/* Pulsing dot — scale 1 → 1.3 → 1 with opacity */
.timeline__dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gold);
  border: 3px solid var(--bg-base);
  margin-bottom: var(--space-sm);
  position: relative;
  box-shadow: 0 0 20px rgba(212, 168, 67, 0.4);
  animation: timelineDotPulse 3s ease-in-out infinite;
}

@keyframes timelineDotPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

.timeline__dot::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid rgba(212, 168, 67, 0.3);
  animation: timelineRingPulse 3s ease-in-out infinite;
}

@keyframes timelineRingPulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.5); opacity: 0; }
}

.timeline__card {
  padding: var(--space-md);
  transition: transform var(--duration-base) var(--ease-out),
              border-color var(--duration-base),
              box-shadow var(--duration-base) var(--ease-out);
}

.timeline__card:hover {
  transform: translateY(-4px) scale(1.02);
  border-color: rgba(212, 168, 67, 0.3);
}

.timeline__era {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 0.25rem;
}

.timeline__title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

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

/* Scroll hint */
.timeline__hint {
  text-align: center;
  margin-top: var(--space-sm);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.timeline__hint-arrow {
  display: inline-block;
  animation: scrollHint 1.5s ease-in-out infinite;
}

@keyframes scrollHint {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(8px); }
}

/* =============================
   EVENTS
   ============================= */
.events {
  background: var(--bg-deep);
}

.events__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.event-card {
  padding: var(--space-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--duration-base) var(--ease-out),
              border-color var(--duration-base),
              box-shadow var(--duration-base) var(--ease-out);
}

.event-card:hover {
  transform: translateY(-6px) scale(1.02);
  border-color: rgba(212, 168, 67, 0.3);
}

.event-card__shimmer {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(212, 168, 67, 0.04) 50%,
    transparent 100%
  );
  animation: eventShimmer 4s ease-in-out infinite;
}

@keyframes eventShimmer {
  0% { left: -100%; }
  100% { left: 200%; }
}

.event-card__badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--coral);
  background: rgba(249, 115, 22, 0.12);
  border: 1px solid rgba(249, 115, 22, 0.25);
  margin-bottom: var(--space-sm);
}

.event-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(212, 168, 67, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-sm);
  color: var(--gold);
  transition: transform var(--duration-fast), background var(--duration-fast);
}

.event-card:hover .event-card__icon {
  transform: scale(1.08);
  background: rgba(212, 168, 67, 0.15);
}

.event-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

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

.events__cta {
  text-align: center;
}

.events__cta p {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

/* =============================
   CONNECT
   ============================= */
.connect {
  background: linear-gradient(180deg, var(--bg-base) 0%, var(--bg-deep) 100%);
  position: relative;
}

.connect::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
}

.connect__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.connect__info h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.connect__detail {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.connect__detail-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  flex-shrink: 0;
  transition: transform var(--duration-fast), background var(--duration-fast);
}

.connect__detail:hover .connect__detail-icon {
  transform: scale(1.08);
  background: rgba(212, 168, 67, 0.1);
}

.connect__detail-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.connect__detail-value {
  font-weight: 500;
  color: var(--text-primary);
}

.connect__detail-value a {
  color: var(--teal);
  transition: color var(--duration-fast);
}

.connect__detail-value a:hover {
  color: var(--gold);
}

.connect__proverb {
  margin-top: var(--space-lg);
  padding: var(--space-md);
  border-left: 3px solid var(--gold);
  background: rgba(212, 168, 67, 0.04);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.connect__proverb blockquote {
  font-size: 1.1rem;
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.connect__proverb cite {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: normal;
}

/* Email signup */
.connect__signup {
  padding: var(--space-lg);
}

.connect__signup h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

.connect__signup p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.connect__form {
  display: flex;
  gap: 0.5rem;
}

.connect__input {
  flex: 1;
  padding: 0.8rem 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  background: var(--bg-raised);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}

.connect__input::placeholder {
  color: var(--text-muted);
}

.connect__input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 20px rgba(212, 168, 67, 0.1);
}

/* =============================
   FOOTER
   ============================= */
.footer {
  background: var(--bg-deep);
  padding: var(--space-xl) 0 var(--space-lg);
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--gold-dim), var(--amber), var(--teal), var(--amber), var(--gold-dim)) 1;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer__brand-name {
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: var(--space-xs);
}

.footer__tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer__heading {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer__link {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--duration-fast), transform var(--duration-fast);
  display: inline-block;
}

.footer__link:hover {
  color: var(--gold);
  transform: translateX(3px);
}

.footer__social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--duration-fast), transform var(--duration-fast);
}

.footer__social-link:hover {
  color: var(--teal);
  transform: scale(1.02);
}

.footer__social-link svg {
  width: 20px;
  height: 20px;
}

.footer__bottom {
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* =============================
   RESPONSIVE
   ============================= */
@media (max-width: 1024px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .about__stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .learn__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .events__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  :root {
    --space-3xl: 5rem;
    --nav-height: 64px;
  }

  /* Mobile nav */
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100vh;
    height: 100dvh;
    flex-direction: column;
    padding: calc(var(--nav-height) + var(--space-lg)) var(--space-lg) var(--space-lg);
    background: rgba(10, 10, 15, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-left: 1px solid var(--glass-border);
    transform: translateX(100%);
    transition: transform var(--duration-base) var(--ease-out);
    gap: 0.25rem;
    align-items: stretch;
    z-index: 999;
  }

  .nav__menu.open {
    transform: translateX(0);
  }

  .nav__link {
    padding: 0.85rem 1rem;
    font-size: 1rem;
  }

  /* Sections */
  .about__stats {
    grid-template-columns: 1fr;
  }

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

  .learn__tabs {
    gap: 0.35rem;
  }

  .learn__tab {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
  }

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

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

  .connect__form {
    flex-direction: column;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .timeline__node {
    flex: 0 0 260px;
  }

  /* Disable flashcard border spin on mobile for perf */
  .flashcard::before {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    width: 100%;
    justify-content: center;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

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

  .reveal,
  .reveal-left,
  .reveal-right {
    opacity: 1;
    transform: none;
  }

  .reveal-stagger > * {
    opacity: 1;
    transform: none;
  }

  .flashcard {
    transition: none;
  }

  .hero__title-gradient {
    background-size: 100% 100%;
  }
}