:root {
  color-scheme: dark;
  --bg: #1b1e24;
  --card: #2c3340;
  --border: #39404b;
  --text: #e3e6ea;
  --muted: #aeb8c2;
  --accent: #ce422b;
  --accent-strong: #e8734f;
  --hero-overlay-1: rgba(15, 17, 21, 0.32);
  --hero-overlay-2: rgba(15, 17, 21, 0.62);
  --hero-overlay-3: rgba(15, 17, 21, 0.82);
  --hero-glow: color-mix(in srgb, var(--accent) 25%, transparent);
  --hero-text: #f2f3f5;
  --hero-subtext: #dfe2e6;
}

/* Dark is the default regardless of system preference; explicit user choice below overrides it */
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #1b1e24;
  --card: #2c3340;
  --border: #39404b;
  --text: #e3e6ea;
  --muted: #aeb8c2;
  --accent: #ce422b;
  --accent-strong: #e8734f;
  --hero-overlay-1: rgba(15, 17, 21, 0.32);
  --hero-overlay-2: rgba(15, 17, 21, 0.62);
  --hero-overlay-3: rgba(15, 17, 21, 0.82);
  --hero-glow: color-mix(in srgb, var(--accent) 25%, transparent);
  --hero-text: #f2f3f5;
  --hero-subtext: #dfe2e6;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f6f4;
  --card: #ffffff;
  --border: #d8dbdf;
  --text: #20242c;
  --muted: #5b6470;
  --accent: #ce422b;
  --accent-strong: #b4551e;
  --hero-overlay-1: transparent;
  --hero-overlay-2: transparent;
  --hero-overlay-3: transparent;
  --hero-glow: transparent;
  --hero-text: #20242c;
  --hero-subtext: #3a4048;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a {
  color: var(--accent-strong);
}

.wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Nav */
nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
nav .wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
}
nav .brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--text);
}
nav .brand span {
  color: var(--accent);
}
nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
}
nav a {
  text-decoration: none;
  color: var(--muted);
}
nav a:hover {
  color: var(--text);
}
nav .nav-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.nav-toggle:hover {
  border-color: var(--accent);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 760px) {
  .nav-toggle {
    display: flex;
  }
  nav .nav-right {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
  }
  nav .nav-right.open {
    display: flex;
  }
  nav ul {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    padding: 0.5rem 1.5rem 1rem;
  }
  nav ul li {
    border-top: 1px solid var(--border);
  }
  nav ul li:first-child {
    border-top: none;
  }
  nav a {
    display: block;
    padding: 0.85rem 0;
  }
}
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  padding: 0;
}
.theme-toggle:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}
.theme-toggle:not(:disabled):hover {
  border-color: var(--accent);
}

/* Buttons */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  font-family: inherit;
  font-size: 0.95rem;
  text-decoration: none;
  padding: 0.75rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, opacity 0.15s ease;
}
.btn:hover {
  background: var(--accent-strong);
  color: #ffffff;
}
.btn:disabled {
  background: var(--border);
  color: var(--muted);
  cursor: not-allowed;
  opacity: 0.7;
}
.btn:disabled:hover {
  background: var(--border);
}

.notify-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: 12px;
  padding: 1.75rem;
  margin: 2rem auto;
  max-width: 460px;
  text-align: left;
}
.notify-panel h2 {
  font-size: 1.1rem;
  margin: 0 0 0.4rem;
}
.notify-panel > p {
  margin: 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.consent {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin: 0 0 1.25rem;
  text-align: left;
  font-size: 0.82rem;
  color: var(--muted);
}
.consent input[type="checkbox"] {
  margin-top: 0.2rem;
  flex-shrink: 0;
}
.consent a {
  color: var(--accent-strong);
}
.notify-note {
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0.75rem 0 0;
}
.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover {
  background: var(--card);
  color: var(--text);
}

/* Hero */
header.hero {
  padding: 7rem 0 4.5rem;
  background:
    linear-gradient(
      180deg,
      var(--hero-overlay-1) 0%,
      var(--hero-overlay-2) 75%,
      var(--hero-overlay-3) 100%
    ),
    radial-gradient(
      ellipse at top,
      var(--hero-glow),
      transparent 60%
    ),
    url("dortmund.jpg") center 30% / cover no-repeat;
  border-bottom: 1px solid var(--border);
}
header.hero h1 {
  color: var(--hero-text);
}
header.hero .subtitle,
header.hero .status-note {
  color: var(--hero-subtext);
}
.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-strong);
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}
h1 {
  font-size: clamp(2.6rem, 8vw, 4.6rem);
  font-weight: 800;
  margin: 0 0 0.75rem;
  letter-spacing: -0.03em;
  line-height: 1.05;
}
h1 .rust {
  color: var(--accent);
}
.subtitle {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 640px;
  margin: 0 0 2rem;
}
.status-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 2rem;
  border-left: 3px solid var(--accent);
  padding-left: 0.75rem;
}

.hero-cta {
  margin: 0 0 2.5rem;
}

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.facts div {
  background: var(--card);
  padding: 1rem 1.1rem;
}
.facts .num {
  display: block;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-strong);
}
.facts .label {
  font-size: 0.8rem;
  color: var(--muted);
}

/* Sections */
section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--border);
}
section:last-of-type {
  border-bottom: none;
}
.kicker {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin: 0 0 0.4rem;
}
h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 1.5rem;
  letter-spacing: -0.01em;
}
.lead {
  color: var(--muted);
  max-width: 700px;
  margin: -1rem 0 2rem;
}

.quote {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--text);
  border-left: 3px solid var(--accent);
  padding: 0.25rem 0 0.25rem 1rem;
  margin: 0 0 2rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem;
}
.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}
.card .tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.price-card {
  text-align: center;
}
.price-card .price {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--accent-strong);
  margin: 0.2rem 0 0.6rem;
}

/* Travel */
.travel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}
.travel-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}
.travel-card .icon {
  font-size: 1.6rem;
  margin-bottom: 0.6rem;
  display: block;
}
.travel-card h3 {
  margin: 0 0 0.6rem;
  font-size: 1.05rem;
}
.travel-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.travel-card li {
  margin-bottom: 0.4rem;
}
.travel-card li:last-child {
  margin-bottom: 0;
}

/* Simple centered page (404, tickets) */
main.simple {
  min-height: calc(100vh - 61px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 0;
}
main.simple .wrap {
  text-align: center;
}
main.simple .eyebrow {
  margin-bottom: 1.25rem;
}
main.simple h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 1rem;
}
main.simple p {
  color: var(--muted);
  max-width: 480px;
  margin: 0 auto 2rem;
}
main.simple .actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Legal page (impressum) */
main.legal h2 {
  font-size: 1.2rem;
  margin: 2rem 0 0.6rem;
}
main.legal h2:first-of-type {
  margin-top: 0;
}
main.legal p {
  color: var(--muted);
  margin: 0 0 1rem;
}

/* Footer / CTA */
footer {
  padding: 3rem 0 4rem;
  text-align: center;
}
footer h2 {
  margin-bottom: 0.6rem;
}
footer p {
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto 1.5rem;
}
.footer-meta {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: center;
}
.footer-links {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  font-size: 0.8rem;
  margin-top: 1rem;
}