/* Art direction: Lustro-inspired dark glassmorphism for bilingual student welcome site */

:root {
  --bg: #0b0f14;
  --bg-2: #101521;
  --bg-3: #151a28;
  --surface: rgba(255,255,255,.06);
  --surface-2: rgba(255,255,255,.08);
  --surface-3: rgba(255,255,255,.11);
  --border: rgba(255,255,255,.10);
  --border-strong: rgba(255,255,255,.16);
  --text: #ffffff;
  --muted: rgba(255,255,255,.72);
  --faint: rgba(255,255,255,.45);
  --shadow: 0 20px 60px rgba(0,0,0,.45);
  --accent: #a78bfa;
  --accent-2: #ec4899;
  --accent-3: #22d3ee;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-xl: 30px;
  --ee: cubic-bezier(0.19,1,0.22,1);
  --eq: cubic-bezier(0.77,0,0.175,1);
  --font-sans: 'Jost', sans-serif;
  --font-body: 'Jost', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at 15% 20%, rgba(99,102,241,.22) 0%, transparent 45%),
    radial-gradient(circle at 82% 78%, rgba(236,72,153,.14) 0%, transparent 44%),
    radial-gradient(circle at 55% 48%, rgba(34,211,238,.09) 0%, transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg-2) 50%, var(--bg));
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 35%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 35%, transparent 85%);
  opacity: .5;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% 0%, rgba(255,255,255,.08), transparent 38%);
  opacity: .18;
}

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

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

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

.container {
  width: min(100% - 2rem, 1120px);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 1rem;
  z-index: 1000;
  background: #ffffff;
  color: #0b0f14;
  padding: .75rem 1rem;
  border-radius: 999px;
}

.skip-link:focus {
  left: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 1rem 0 0;
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .95rem 1rem;
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
  border: 1px solid var(--border);
  border-radius: 999px;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: .8rem;
  min-width: 0;
}

.logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 22px rgba(167,139,250,.35);
  flex: 0 0 auto;
}

.brand-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -.02em;
  white-space: nowrap;
}

.brand-title span {
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: .72rem;
  margin-left: .35rem;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: .55rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: .7rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  box-shadow: 0 10px 28px rgba(0,0,0,.18);
  transition: transform .25s var(--ee), background .25s var(--ee), border-color .25s var(--ee);
  font-size: .86rem;
  font-weight: 600;
  letter-spacing: -.01em;
}

.nav-btn:hover {
  transform: translateY(-1px);
  background: rgba(255,255,255,.1);
  border-color: var(--border-strong);
}

.nav-btn.active {
  background: linear-gradient(135deg, rgba(167,139,250,.24), rgba(236,72,153,.16));
  border-color: rgba(167,139,250,.45);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 40px;
  padding: .65rem .95rem;
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  font-weight: 600;
}

.lang-flag {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(255,255,255,.12);
}

.logo-slot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: .65rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  font-weight: 600;
}

.logo-slot span {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.page {
  padding: 2rem 0 4rem;
}

.hero {
  padding: 4rem 0 2rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .9fr);
  gap: 1.5rem;
  align-items: start;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .4rem .85rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 rgba(167,139,250,0);
  animation: dot-glow 1.6s ease-in-out infinite;
}

@keyframes dot-glow {
  0% {
    opacity: .45;
    box-shadow: 0 0 0 rgba(167,139,250,0);
  }
  50% {
    opacity: 1;
    box-shadow: 0 0 12px rgba(167,139,250,.95), 0 0 22px rgba(167,139,250,.45);
  }
  100% {
    opacity: .45;
    box-shadow: 0 0 0 rgba(167,139,250,0);
  }
}

.hero h1,
.page-title {
  margin: 1rem 0 1rem;
  font-size: clamp(3rem, 7vw, 6.8rem);
  line-height: .92;
  letter-spacing: -.06em;
}

.lead {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.15vw, 1.125rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: .8rem;
  flex-wrap: wrap;
  margin-top: 1.4rem;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: .9rem 1.2rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  transition: transform .25s var(--ee), background .25s var(--ee), border-color .25s var(--ee), box-shadow .25s var(--ee);
  font-weight: 600;
}

.btn-primary {
  background: linear-gradient(135deg, #fff, rgba(255,255,255,.84));
  color: #0b0f14;
  box-shadow: 0 16px 30px rgba(255,255,255,.06), 0 16px 45px rgba(167,139,250,.15);
}

.btn-secondary {
  background: #ffffff;
  color: #0b0f14;
  border: 1px solid rgba(255,255,255,.35);
  box-shadow: 0 14px 30px rgba(0,0,0,.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  border-color: rgba(255,255,255,.65);
  box-shadow:
    0 20px 50px rgba(0,0,0,.50),
    0 0 30px rgba(165,180,252,.35);
}

.glass-card,
.panel,
.info-card,
.event-card,
.faq-item,
.contact-card,
.legal-card {
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  box-shadow: var(--shadow);
}

.info-card {
  padding: 1.25rem;
}

.info-card h2,
.section-title {
  margin: 0 0 .9rem;
  font-size: clamp(1.5rem, 2.3vw, 2.4rem);
  letter-spacing: -.04em;
}

.info-list {
  display: grid;
  gap: .7rem;
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-family: var(--font-body);
}

.info-list li {
  line-height: 1.6;
}

.section {
  padding: 2rem 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.section-head p {
  margin: 0;
  max-width: 58ch;
  color: var(--muted);
  font-family: var(--font-body);
}

.split-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 1rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 1rem;
}

.cards-grid.four {
  grid-template-columns: repeat(4, minmax(0,1fr));
}

.event-card,
.faq-item,
.contact-card,
.legal-card {
  padding: 1.2rem;
}

.event-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.event-card h3,
.faq-item summary,
.contact-card h3,
.legal-card h3 {
  margin: .85rem 0 .55rem;
  font-size: 1.2rem;
  letter-spacing: -.03em;
}

.event-card p,
.contact-card p,
.legal-card p,
.faq-item p {
  margin: 0;
  color: var(--muted);
  font-family: var(--font-body);
  line-height: 1.7;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .35rem .7rem;
  border-radius: 999px;
  background: rgba(167,139,250,.14);
  border: 1px solid rgba(167,139,250,.28);
  color: #eee;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.faq-list {
  display: grid;
  gap: 1rem;
}

.faq-item {
  padding: 1rem 1.15rem;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::marker {
  display: none;
}

.faq-item[open] {
  border-color: rgba(167,139,250,.34);
}

.footer {
  padding: 1.5rem 0 3rem;
}

.footer-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: .95rem 1rem;
  border-top: 1px solid var(--border);
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  gap: .8rem;
  flex-wrap: wrap;
}

.footer-links a {
  opacity: .9;
}

.footer-links a:hover {
  opacity: 1;
}

/* Countdown */
.countdown {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1.15rem;
  padding: 1.35rem 2.4rem;
  border-radius: 36px; /* stärker gerundet wie die Card */
  border: 1px solid rgba(255,255,255,.12);
  background:
    linear-gradient(120deg, rgba(24,30,46,.92), rgba(20,26,40,.92));
  box-shadow:
    0 18px 40px rgba(0,0,0,.5);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  margin: 0 auto 2.8rem;
  position: relative;
  overflow: hidden;
  width: fit-content;
}

/* feines Glas-Grid innen, wie bei der Karte */
.countdown::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: .20;
  pointer-events: none;
}

.count-icon {
  font-size: 2rem;
  line-height: 1;
  color: #ffffff;
  margin-right: .15rem;
  position: relative;
  z-index: 1;
}

.count-unit {
  min-width: 74px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 1;
}

.count-value {
  font-family: var(--font-sans);
  font-size: clamp(2.25rem, 4.8vw, 3.4rem);
  line-height: 1;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: -0.04em;
}

.count-label {
  margin-top: .25rem;
  font-family: var(--font-body);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: lowercase;
  color: var(--faint);
}

.count-sep {
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  line-height: 1;
  color: rgba(255,255,255,.42);
  transform: translateY(-.15rem);
  position: relative;
  z-index: 1;
}

@media (max-width: 900px) {
  .header-bar {
    border-radius: 28px;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-actions {
    justify-content: flex-start;
  }

  .hero-grid,
  .split-grid,
  .cards-grid,
  .cards-grid.four {
    grid-template-columns: 1fr;
  }

  .hero h1,
  .page-title {
    font-size: clamp(2.7rem, 13vw, 5.4rem);
  }
}

@media (max-width: 640px) {
  .site-header {
    padding-top: .75rem;
  }

  .header-bar {
    padding: .85rem .9rem;
  }

  .brand-title {
    white-space: normal;
  }

  .nav-btn,
  .lang-switch,
  .logo-slot {
    width: 100%;
    justify-content: center;
  }

  .lang-switch {
    width: auto;
    max-width: 100%;
    justify-content: center;
    padding-inline: 0.8rem; /* etwas kompakter */
  }

  .nav-actions {
    width: 100%;
  }

  .hero {
    padding-top: 2.5rem;
  }

  .section {
    padding: 1.4rem 0;
  }

  .countdown {
    gap: .75rem;
    padding: 1rem 1.1rem;
    border-radius: 24px;
  }

  .count-unit {
    min-width: 52px;
  }

  .count-value {
    font-size: clamp(1.7rem, 7vw, 2.3rem);
  }

  .count-label {
    font-size: .62rem;
  }
}

.gremien-marquee {
  margin: -0.5rem auto 2.2rem;
  max-width: 100%;
  overflow: hidden;
  position: relative;
  opacity: .92;
  padding-inline: .75rem;
}

#gremien-track {
  display: flex;
  width: max-content;
  align-items: center;
  animation: gremien-scroll 24s linear infinite;
  will-change: transform;
}

.gremien-group {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-shrink: 0;
  padding-right: 1.2rem;
}

.gremien-icon {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .45rem .95rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  font-family: var(--font-body);
  font-size: .78rem;
  color: var(--muted);
  white-space: nowrap;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

@keyframes gremien-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}