/* ==========================================================================
   Arctic Mist — Liquid Glass Design System
   Light + dark theme.
   ========================================================================== */

/* ---------- Tokens (light) ---------- */
:root {
  --bg-start: #dceaf5;
  --bg-mid: #c8dcf0;
  --bg-end: #b6cee9;

  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-bg-strong: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.75);
  --glass-shadow: 0 10px 40px -12px rgba(74, 144, 226, 0.25),
                  0 2px 6px rgba(74, 144, 226, 0.08),
                  inset 0 1px 0 rgba(255, 255, 255, 0.8);
  --glass-shadow-hover: 0 20px 50px -12px rgba(74, 144, 226, 0.3),
                        0 4px 10px rgba(74, 144, 226, 0.1),
                        inset 0 1px 0 rgba(255, 255, 255, 0.9);

  --accent: #4a90e2;
  --accent-deep: #2a6fbf;
  --accent-light: #a8c5e8;
  --accent-glow: rgba(74, 144, 226, 0.35);
  --accent-soft-bg: rgba(74, 144, 226, 0.1);
  --accent-soft-bg-strong: rgba(74, 144, 226, 0.12);

  --text: #1a2332;
  --text-muted: #5a6b7f;
  --text-soft: #8294a8;

  --logo-bg: #ffffff;
  --tag-bg: rgba(74, 144, 226, 0.1);

  --menu-bg: rgba(255, 255, 255, 0.92);
  --menu-border: rgba(255, 255, 255, 0.9);

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Space Grotesk', var(--font-sans);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --container: 1180px;
  --radius: 20px;
  --radius-lg: 28px;
}

/* ---------- Tokens (dark) ---------- */
.is-dark {
  --bg-start: #0a1020;
  --bg-mid: #0e1628;
  --bg-end: #0a1324;

  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-bg-strong: rgba(255, 255, 255, 0.09);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-shadow: 0 10px 40px -12px rgba(0, 0, 0, 0.55),
                  0 2px 6px rgba(0, 0, 0, 0.3),
                  inset 0 1px 0 rgba(255, 255, 255, 0.08);
  --glass-shadow-hover: 0 20px 50px -12px rgba(0, 0, 0, 0.7),
                        0 4px 10px rgba(0, 0, 0, 0.4),
                        inset 0 1px 0 rgba(255, 255, 255, 0.12);

  --accent: #6ba8e8;
  --accent-deep: #8fc0f0;
  --accent-light: #a8c5e8;
  --accent-glow: rgba(107, 168, 232, 0.45);
  --accent-soft-bg: rgba(107, 168, 232, 0.14);
  --accent-soft-bg-strong: rgba(107, 168, 232, 0.18);

  --text: #e8eef5;
  --text-muted: #a8b8cc;
  --text-soft: #7a8ba0;

  --logo-bg: #f3f6fa;
  --tag-bg: rgba(107, 168, 232, 0.14);

  --menu-bg: rgba(14, 22, 40, 0.9);
  --menu-border: rgba(255, 255, 255, 0.14);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body {
  margin: 0;
  font-family: var(--font-sans), serif;
  color: var(--text);
  background: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-mid) 45%, var(--bg-end) 100%);
  background-attachment: fixed;
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: color 0.3s var(--ease-out);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

/* ---------- Ambient background ---------- */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: float 22s ease-in-out infinite;
}
.blob-1 {
  width: 520px; height: 520px;
  top: -120px; left: -140px;
  background: radial-gradient(circle, #9ec6ef 0%, transparent 70%);
}
.blob-2 {
  width: 620px; height: 620px;
  bottom: -180px; right: -180px;
  background: radial-gradient(circle, #b8d4f0 0%, transparent 70%);
  animation-delay: -8s;
}
.blob-3 {
  width: 420px; height: 420px;
  top: 40%; left: 55%;
  background: radial-gradient(circle, #c9dceb 0%, transparent 70%);
  animation-delay: -14s;
}
.is-dark .blob-1 { background: radial-gradient(circle, #1e3a6b 0%, transparent 70%); opacity: 0.7; }
.is-dark .blob-2 { background: radial-gradient(circle, #2a4a7a 0%, transparent 70%); opacity: 0.6; }
.is-dark .blob-3 { background: radial-gradient(circle, #163254 0%, transparent 70%); opacity: 0.55; }
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(40px, -30px) scale(1.05); }
  66%      { transform: translate(-30px, 40px) scale(0.95); }
}
.grain {
  position: absolute;
  inset: 0;
  opacity: 0.025;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
.is-dark .grain { opacity: 0.05; mix-blend-mode: screen; }

/* ---------- Glass primitive ---------- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius);
}
.glass-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  background: var(--glass-bg-strong);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-deep);
  letter-spacing: 0.01em;
  box-shadow: 0 4px 14px -4px rgba(74, 144, 226, 0.18);
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 10px 14px 10px 22px;
  border-radius: 999px;
  z-index: 100;
  transition: top 0.4s var(--ease-out), padding 0.4s var(--ease-out);
}
.nav.scrolled { top: 12px; padding: 8px 12px 8px 20px; }
.nav-brand {
  font-family: var(--font-display), serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--accent-deep);
  padding-right: 4px;
}
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  display: block;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: color 0.25s var(--ease-out), background 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}
.nav-links a:hover {
  color: var(--text);
  background: var(--glass-bg-strong);
}

/* Language switch (segmented control) */
.lang-switch {
  display: flex;
  gap: 2px;
  padding: 3px;
  background: var(--accent-soft-bg);
  border-radius: 999px;
}
.lang-btn {
  padding: 5px 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-radius: 999px;
  transition: color 0.25s var(--ease-out), background 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}
.lang-btn:hover { color: var(--text); }
.lang-btn.active {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  color: #fff;
  box-shadow: 0 2px 8px -2px var(--accent-glow);
}

.nav-toggle {
  display: none;
  width: 38px; height: 38px;
  border-radius: 999px;
  padding: 10px 9px;
  flex-direction: column;
  justify-content: space-between;
  align-items: stretch;
}
.nav-toggle span {
  display: block; height: 2px; width: 100%;
  background: var(--text); border-radius: 2px;
  transition: transform 0.3s var(--ease-out);
}

/* ---------- Layout ---------- */
main { position: relative; z-index: 1; }
.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 100px 24px;
}
.section-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 48px;
}
.section-number {
  font-family: var(--font-display), serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.section-title {
  font-family: var(--font-display), serif;
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--text);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  max-width: var(--container);
  margin: 0 auto;
  padding: 140px 24px 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero-text { max-width: 640px; }
.eyebrow { margin-bottom: 28px; }
.hero-title {
  font-family: var(--font-display), serif;
  font-size: clamp(44px, 7vw, 84px);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 0 0 24px;
}
.hero-title > span:first-child { display: inline-block; }
.gradient-text {
  background: linear-gradient(120deg, var(--accent-deep) 0%, var(--accent) 50%, #6ba8e8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}
.hero-subtitle {
  font-size: clamp(18px, 2vw, 22px);
  color: var(--text-muted);
  margin: 0 0 16px;
  font-weight: 500;
}
.hero-tagline {
  font-size: 17px;
  color: var(--text-soft);
  margin: 0 0 40px;
  max-width: 540px;
}
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.01em;
  transition: transform 0.25s var(--ease-out),
              box-shadow 0.3s var(--ease-out),
              background 0.25s var(--ease-out),
              color 0.25s var(--ease-out);
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  color: #fff;
  box-shadow: 0 10px 24px -8px var(--accent-glow),
              inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -8px var(--accent-glow),
              inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.btn:active { transform: translateY(0) scale(0.97); transition-duration: 60ms; }
.btn-ghost { color: var(--text); padding: 13px 27px; }
.btn-ghost:hover {
  transform: translateY(-2px);
  background: var(--glass-bg-strong);
}
.lang-btn:active { transform: scale(0.94); transition-duration: 60ms; }

/* Portrait */
.hero-portrait {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 380px;
  margin-left: auto;
}
.portrait-glass {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-lg);
  padding: 10px;
  overflow: hidden;
  animation: subtle-float 6s ease-in-out infinite;
}
.portrait-glass img {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: calc(var(--radius-lg) - 8px);
}
@keyframes subtle-float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}
.portrait-orbit { position: absolute; inset: -20px; pointer-events: none; }
.orbit-dot {
  position: absolute;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}
.orbit-dot-1 {
  width: 12px; height: 12px;
  top: 10%; right: -6px;
  animation: pulse 3s ease-in-out infinite;
}
.orbit-dot-2 {
  width: 8px; height: 8px;
  bottom: 20%; left: -4px;
  background: var(--accent-light);
  animation: pulse 3s ease-in-out infinite 1.5s;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50%      { transform: scale(1.3); opacity: 1; }
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 40px; left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 2px solid var(--text-soft);
  border-radius: 14px;
  display: flex; justify-content: center;
  padding-top: 8px;
  opacity: 0.6;
  transition: opacity 0.3s;
}
.scroll-hint:hover { opacity: 1; }
.scroll-hint span {
  width: 3px; height: 8px;
  background: var(--text-soft);
  border-radius: 2px;
  animation: scroll-dot 1.8s ease-in-out infinite;
}
@keyframes scroll-dot {
  0%   { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* ---------- Cards ---------- */
.card {
  --mx: 50%;
  --my: 50%;

  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow-hover);
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    320px circle at var(--mx, 50%) var(--my, 50%),
    var(--accent-soft-bg-strong),
    transparent 55%
  );
  opacity: 0;
  transition: opacity 0.35s var(--ease-out);
  pointer-events: none;
}
.card:hover::before { opacity: 1; }
.card-compact { padding: 28px; }
.card-title {
  font-family: var(--font-display), serif;
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
  color: var(--text);
}
.card-org {
  font-size: 14px;
  color: var(--accent-deep);
  margin: 0 0 4px;
  font-weight: 500;
}
.card-location {
  font-size: 13px;
  color: var(--text-soft);
  margin: 6px 0 14px;
}
.card-description {
  color: var(--text-muted);
  margin: 0;
  font-size: 15px;
}
.card-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}
.card-header-text { flex: 1; min-width: 0; }

/* Logos */
.card-logo {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--logo-bg);
  padding: 6px;
  object-fit: contain;
  flex-shrink: 0;
  box-shadow: 0 2px 8px -2px rgba(0, 0, 0, 0.08),
              inset 0 0 0 1px rgba(0, 0, 0, 0.04);
}
.card-logo-text {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display), serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-deep);
  background: var(--logo-bg);
}
.card-logo-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.card-logo-row .badge-soft { margin-bottom: 0; }

/* Badges */
.badge {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: 0 4px 10px -2px var(--accent-glow);
}
.badge-soft {
  background: var(--accent-soft-bg-strong);
  color: var(--accent-deep);
  box-shadow: none;
  margin-bottom: 14px;
}
.bullet-list {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.bullet-list li {
  position: relative;
  padding-left: 20px;
  color: var(--text-muted);
  font-size: 15px;
}
.bullet-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
  align-items: stretch;
}
.about-lead {
  font-size: 18px;
  color: var(--text);
  line-height: 1.7;
  margin-top: 0;
  max-width: 65ch;
}
.about-grid p { color: var(--text-muted); max-width: 65ch; }
.about-lead { color: var(--text); }
.fact-list { display: flex; flex-direction: column; gap: 12px; margin-top: 14px; }
.fact-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--text-muted);
}
.fact-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--accent-deep);
  opacity: 0.85;
}


/* Timeline */
.timeline { position: relative; padding-left: 36px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 10px; top: 12px; bottom: 12px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-light), var(--accent-soft-bg));
}
.timeline-item { position: relative; margin-bottom: 24px; }
.timeline-marker {
  position: absolute;
  left: -35px; top: 28px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--bg-mid);
  border: 3px solid var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft-bg-strong),
              0 4px 12px -2px var(--accent-glow);
  will-change: transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* Grids */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.card-feature { grid-column: span 1; }
.card-placeholder {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 160px;
  color: var(--text-soft);
  grid-column: 1 / -1;
}

/* Language cards */
.card-lang { text-align: center; padding: 28px 22px; }
.card-lang .flag {
  display: inline-block;
  width: 52px;
  height: 52px;
  margin-bottom: 14px;
  border-radius: 50%;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.22));
  transition: transform 0.4s var(--ease-spring);
}
.card-lang:hover .flag { transform: scale(1.08) rotate(-3deg); }
.card-lang .card-title { margin-bottom: 4px; }
.card-lang .card-org { margin-bottom: 18px; }
.cefr-bar {
  display: flex;
  gap: 5px;
  justify-content: center;
}
.cefr-bar span {
  width: 16px; height: 5px;
  border-radius: 3px;
  background: var(--accent-soft-bg-strong);
  transition: background 0.3s var(--ease-out);
}
.cefr-bar[data-level="6"] span { background: var(--accent); }
.cefr-bar[data-level="5"] span:nth-child(-n+5) { background: var(--accent); }
.cefr-bar[data-level="4"] span:nth-child(-n+4) { background: var(--accent); }
.cefr-bar[data-level="3"] span:nth-child(-n+3) { background: var(--accent); }
.cefr-bar[data-level="2"] span:nth-child(-n+2) { background: var(--accent); }
.cefr-bar[data-level="1"] span:nth-child(-n+1) { background: var(--accent); }

/* Tags */
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag {
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--accent-deep);
  font-size: 12px;
  font-weight: 500;
}

/* Card CTA row */
.card-cta-row { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* Inline card link */
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--accent-deep);
  transition: color 0.2s var(--ease-out), gap 0.2s var(--ease-out);
}
.card-link svg {
  flex-shrink: 0;
  display: block;
  transition: transform 0.2s var(--ease-out);
}
.card-link:hover { color: var(--accent); gap: 9px; }
.card-link:hover svg { transform: translate(2px, -2px); }
.card-link-muted { color: var(--text-soft); font-weight: 400; }
.card-link-muted:hover { color: var(--text-muted); }

/* Contact */
.section-contact { max-width: 720px; }
.card-contact { padding: 56px 48px; text-align: center; }
.card-contact .section-number { display: block; margin-bottom: 8px; }
.card-contact .section-title { margin-bottom: 16px; }
.contact-lead {
  color: var(--text-muted);
  font-size: 17px;
  margin: 0 0 32px;
}
.contact-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  text-align: center;
  padding: 40px 24px 30px;
  color: var(--text-soft);
  font-size: 13px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

/* Theme toggle */
.theme-toggle {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: var(--glass-bg-strong);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: 0 4px 14px -4px rgba(74, 144, 226, 0.18);
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s var(--ease-out),
              color 0.25s var(--ease-out),
              background 0.25s var(--ease-out);
}
.theme-toggle:hover { color: var(--text); transform: translateY(-2px); }
.theme-toggle:active { transform: scale(0.94); transition-duration: 60ms; }
.theme-icon {
  width: 20px;
  height: 20px;
  position: absolute;
  transition: transform 0.4s var(--ease-spring), opacity 0.25s var(--ease-out);
}
/* Light theme */
.theme-icon-sun { transform: rotate(0deg) scale(1); opacity: 1; }
.theme-icon-moon { transform: rotate(-90deg) scale(0.6); opacity: 0; }
/* Dark theme: flip */
.is-dark .theme-icon-sun { transform: rotate(90deg) scale(0.6); opacity: 0; }
.is-dark .theme-icon-moon { transform: rotate(0deg) scale(1); opacity: 1; }

/* ---------- Language switch fade ---------- */
[data-i18n] {
  transition: opacity 0.18s var(--ease-out);
}
body.lang-switching [data-i18n] {
  opacity: 0;
}

/* ---------- Easter egg toast ---------- */
.egg-toast-wrap {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 32px;
  z-index: 300;
  display: flex;
  justify-content: center;
  pointer-events: none;
}
.egg-toast {
  opacity: 0;
  white-space: nowrap;
  font-size: 14px;
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
body.gsap-ready .reveal { transition: none; }

/* ---------- Scroll progress bar ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-deep) 60%, var(--accent-light) 100%);
  transform: scaleX(0);
  transform-origin: left center;
  z-index: 200;
  pointer-events: none;
  will-change: transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* ---------- GSAP-driven enhancements ---------- */
body.gsap-ready .card {
  transform-style: preserve-3d;
  will-change: transform;
  transition: box-shadow 0.4s var(--ease-out);
}
body.gsap-ready .card:hover { transform: none; }
body.gsap-ready .gradient-text {
  background-size: 200% 200%;
  background-position: 0% 50%;
}
body.gsap-ready .timeline::before {
  background: var(--accent-soft-bg);
  opacity: 0.6;
}
.timeline-fill {
  position: absolute;
  left: 10px; top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-light));
  transform-origin: top center;
  transform: scaleY(0);
  border-radius: 2px;
  pointer-events: none;
  will-change: transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* ---------- Responsive ---------- */
@media (max-width: 1040px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-portrait { max-width: 280px; margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    flex-direction: column;
    background: var(--menu-bg);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--menu-border);
    border-radius: var(--radius);
    padding: 8px;
    min-width: 180px;
    box-shadow: var(--glass-shadow);
  }
  .nav-links.open a {
    color: var(--text);
    font-weight: 500;
  }
  .nav-toggle { display: flex; }
}
@media (max-width: 560px) {
  .nav { gap: 10px; padding: 8px 10px 8px 16px; }
  .nav-brand { display: none; }
  .lang-btn { padding: 4px 8px; font-size: 10px; }
  .section { padding: 70px 20px; }
  .section-head { margin-bottom: 32px; }
  .hero { padding: 120px 20px 60px; }
  .card { padding: 24px; }
  .card-contact { padding: 40px 28px; }
  .grid-4 { grid-template-columns: 1fr; }
  .card-header { gap: 12px; }
  .card-header .badge { order: 3; width: 100%; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}