/* ===================================================
   Korea-Uzbekistan Exchange Program — Global Styles
   =================================================== */

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

/* ─── Design Tokens ─────────────────────────────── */
:root {
  --c-bg:          #0d0d0d;
  --c-surface:     #161616;
  --c-surface2:    #1f1f1f;
  --c-border:      #2a2a2a;
  --c-text:        #f2f0eb;
  --c-muted:       #888;
  --c-accent-kr:   #c8102e;   /* Korean red */
  --c-accent-uz:   #009b77;   /* Uzbek teal/green */
  --c-accent-gold: #d4a943;
  --c-white:       #ffffff;

  --font-display: 'Bebas Neue', sans-serif;
  --font-body:    'Inter', sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  8rem;

  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 28px;

  --nav-h: 76px;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; object-fit: cover; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; font-family: var(--font-body); border: none; background: none; }
input, textarea, select {
  font-family: var(--font-body);
  font-size: 1rem;
}

/* ─── Typography ─────────────────────────────────── */
.display {
  font-family: var(--font-display);
  line-height: 0.95;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.d1 { font-size: clamp(3.5rem, 10vw, 9rem); }
.d2 { font-size: clamp(2.5rem, 6vw, 5.5rem); }
.d3 { font-size: clamp(1.8rem, 4vw, 3.2rem); }

.label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.label-accent {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-accent-gold);
}

/* ─── Layout Helpers ─────────────────────────────── */
.container { width: 100%; max-width: 1180px; margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2.5rem); }
.section { padding-block: var(--space-xl); }
.section--tight { padding-block: var(--space-lg); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-md); }

/* ─── Navigation ─────────────────────────────────── */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}
#nav.scrolled {
  background: rgba(13,13,13,0.92);
  backdrop-filter: blur(18px);
  box-shadow: 0 1px 0 var(--c-border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--c-accent-kr) 50%, var(--c-accent-uz) 50%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1rem;
  color: white;
  letter-spacing: 0;
}
.nav-logo-text {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  color: var(--c-text);
  line-height: 1.1;
}
.nav-logo-sub {
  font-family: var(--font-body);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-muted);
}

/* Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.nav-links a {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-muted);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--c-accent-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--c-text); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

/* CTA */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.6rem 1.4rem;
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--c-text);
  color: var(--c-bg);
}
.btn-primary:hover {
  background: var(--c-accent-gold);
  color: var(--c-bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212,169,67,0.3);
}
.btn-outline {
  border: 1.5px solid var(--c-border);
  color: var(--c-text);
}
.btn-outline:hover {
  border-color: var(--c-text);
  background: rgba(242,240,235,0.05);
}
.btn-accent {
  background: linear-gradient(135deg, var(--c-accent-kr), #8b0000);
  color: white;
}
.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200,16,46,0.4);
}
.btn-lg {
  padding: 0.85rem 2.2rem;
  font-size: 0.9rem;
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.nav-drawer {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: rgba(13,13,13,0.98);
  backdrop-filter: blur(20px);
  padding: var(--space-md);
  border-top: 1px solid var(--c-border);
  flex-direction: column;
  gap: var(--space-sm);
  z-index: 99;
}
.nav-drawer.open { display: flex; }
.nav-drawer a {
  font-size: 1.1rem;
  font-weight: 500;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text);
}
.nav-drawer .btn { width: fit-content; margin-top: var(--space-xs); }

/* ─── Footer ─────────────────────────────────────── */
footer {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  padding-block: var(--space-lg);
  margin-top: var(--space-xl);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-lg);
  align-items: start;
}
.footer-brand p {
  font-size: 0.88rem;
  color: var(--c-muted);
  margin-top: var(--space-xs);
  max-width: 360px;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.footer-links a {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--c-text); }
.footer-bottom {
  margin-top: var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.footer-bottom p {
  font-size: 0.78rem;
  color: var(--c-muted);
}

/* Language switcher */
.lang-switcher {
  display: flex;
  gap: 6px;
}
.lang-btn {
  padding: 0.3rem 0.7rem;
  border-radius: 100px;
  border: 1.5px solid var(--c-border);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-muted);
  transition: all var(--transition);
}
.lang-btn:hover, .lang-btn.active {
  border-color: var(--c-accent-gold);
  color: var(--c-accent-gold);
}

/* ─── Page Header ────────────────────────────────── */
.page-header {
  padding-top: calc(var(--nav-h) + var(--space-xl));
  padding-bottom: var(--space-lg);
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-accent-kr), var(--c-accent-uz), transparent);
}

/* ─── Cards ──────────────────────────────────────── */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  border-color: #3a3a3a;
}
.card-img {
  width: 100%;
  height: 220px;
}
.card-body {
  padding: var(--space-md);
}
.card-body .label-accent { margin-bottom: var(--space-xs); display: block; }
.card-body h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}
.card-body p { font-size: 0.9rem; color: var(--c-muted); }

/* ─── Section Dividers ───────────────────────────── */
.divider {
  height: 1px;
  background: var(--c-border);
  margin-block: var(--space-lg);
}

/* ─── Pill tag ───────────────────────────────────── */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.tag-kr { background: rgba(200,16,46,0.15); color: #e8455e; border: 1px solid rgba(200,16,46,0.3); }
.tag-uz { background: rgba(0,155,119,0.15); color: #2ecbb0; border: 1px solid rgba(0,155,119,0.3); }
.tag-gold { background: rgba(212,169,67,0.15); color: var(--c-accent-gold); border: 1px solid rgba(212,169,67,0.3); }

/* ─── Stats Bar ──────────────────────────────────── */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.stat-item {
  background: var(--c-surface);
  padding: var(--space-md) var(--space-lg);
  text-align: center;
}
.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1;
  background: linear-gradient(135deg, var(--c-accent-kr), var(--c-accent-uz));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.82rem;
  color: var(--c-muted);
  margin-top: 4px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ─── Dark Teaser Block ──────────────────────────── */
.teaser-block {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}
.teaser-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(200,16,46,0.06) 0%, rgba(0,155,119,0.06) 100%);
  pointer-events: none;
}
.teaser-block-accent {
  position: absolute;
  top: -60px; right: -40px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,169,67,0.12), transparent 70%);
  pointer-events: none;
}

/* ─── Photo Grid ─────────────────────────────────── */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-sm);
}
.photo-grid .p-lg { grid-column: span 8; }
.photo-grid .p-sm { grid-column: span 4; }
.photo-grid .p-half { grid-column: span 6; }
.photo-grid .p-full { grid-column: span 12; }
.photo-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
}
.photo-item img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  transition: transform 0.6s ease;
}
.photo-item:hover img { transform: scale(1.04); }
.photo-caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: var(--space-sm) var(--space-md);
  background: linear-gradient(0deg, rgba(0,0,0,0.75) 0%, transparent 100%);
  font-size: 0.82rem;
  color: rgba(255,255,255,0.85);
}

/* ─── Form ───────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.form-group input,
.form-group textarea,
.form-group select {
  background: var(--c-surface);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-sm);
  color: var(--c-text);
  padding: 0.75rem 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--c-accent-gold);
  box-shadow: 0 0 0 3px rgba(212,169,67,0.15);
}
.form-group textarea { resize: vertical; min-height: 140px; }
.form-group select option { background: var(--c-surface); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }

/* ─── Timeline ───────────────────────────────────── */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before {
  content: '';
  position: absolute;
  left: 6px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-accent-kr), var(--c-accent-uz));
}
.timeline-item { position: relative; padding-bottom: var(--space-md); }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.7rem; top: 6px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--c-accent-gold);
  border: 2px solid var(--c-bg);
}
.timeline-item h4 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.timeline-item p { font-size: 0.88rem; color: var(--c-muted); margin-top: 4px; }

/* ─── Testimonial Card ───────────────────────────── */
.testimonial-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: transform var(--transition), border-color var(--transition);
}
.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: #3a3a3a;
}
.testimonial-quote {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-text);
  font-style: italic;
  margin-bottom: var(--space-sm);
}
.testimonial-quote::before { content: '\201C'; font-size: 1.4rem; color: var(--c-accent-gold); line-height: 0; vertical-align: -0.3em; margin-right: 2px; }
.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.testimonial-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-accent-kr), var(--c-accent-uz));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1rem;
  color: white;
  flex-shrink: 0;
}
.testimonial-info strong { display: block; font-size: 0.9rem; }
.testimonial-info span { font-size: 0.78rem; color: var(--c-muted); }

/* ─── School Card ────────────────────────────────── */
.school-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  position: relative;
  overflow: hidden;
}
.school-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
}
.school-card.kr::before { background: var(--c-accent-kr); }
.school-card.uz::before { background: var(--c-accent-uz); }
.school-card-flag { font-size: 2.5rem; margin-bottom: var(--space-xs); }
.school-card h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.school-card .detail { font-size: 0.84rem; color: var(--c-muted); margin-top: 4px; }
.school-card ul { margin-top: var(--space-sm); display: flex; flex-direction: column; gap: 6px; }
.school-card ul li { font-size: 0.88rem; display: flex; align-items: flex-start; gap: 8px; }
.school-card ul li::before { content: '→'; color: var(--c-accent-gold); flex-shrink: 0; }

/* ─── Eligibility Box ────────────────────────────── */
.elig-box {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
}
.elig-box ul { display: flex; flex-direction: column; gap: var(--space-xs); margin-top: var(--space-sm); }
.elig-box ul li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.9rem; }
.elig-box ul li span.icon { color: var(--c-accent-uz); font-size: 1rem; flex-shrink: 0; }

/* ─── Gradient Text ──────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--c-accent-kr) 0%, var(--c-accent-gold) 50%, var(--c-accent-uz) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Scroll-reveal animation ────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.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; }

/* ─── Hero specific ──────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-h);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.35);
  transform: scale(1.04);
  transition: transform 8s ease;
}
.hero.loaded .hero-bg { transform: scale(1); }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, var(--c-bg) 0%, transparent 40%, transparent 70%, var(--c-bg) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding-inline: 2rem;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: var(--space-md);
}
.hero-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
}
.hero-dot.kr { background: var(--c-accent-kr); }
.hero-dot.uz { background: var(--c-accent-uz); }
.hero-tagline {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 8.5rem);
  line-height: 0.9;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-md);
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(242,240,235,0.65);
  max-width: 540px;
  margin: 0 auto var(--space-lg);
  line-height: 1.7;
}
.hero-cta {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── Responsive ─────────────────────────────────── */
@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .stats-bar { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .teaser-block { flex-direction: column; text-align: center; padding: var(--space-md); }
  .photo-grid .p-lg, .photo-grid .p-sm, .photo-grid .p-half { grid-column: span 12; }
  .photo-item img { min-height: 200px; }
}
@media (max-width: 580px) {
  .grid-3 { grid-template-columns: 1fr; }
  :root { --space-xl: 5rem; --space-lg: 3rem; }
}