/* ============================================================
   Metropolis – Das Stummfilmkonzert – Landingpage
   Design-Tokens
   Namenskonvention: BEM (block__element, block--modifier)
   ============================================================ */
:root {
  --color-bg: #FFFFFF;
  --color-ink: #201D18;
  --color-ink-secondary: #5B5750;
  --color-divider: #D8D4CB;
  --color-hero-bg: #0E0D0B;
  --color-red: #A81C1C;
  --color-gold: #B08D3E;
  --color-gold-hover: #8F7431;

  /* Optischer Ausgleich für CTA-Buttons: Josefin Sans hat mehr Raum über
     als unter der Grundlinie, daher wirkt zentrierter Text leicht zu hoch.
     Wert in em -> skaliert automatisch mit der jeweiligen Button-Font-Size.
     Feintuning hier an einer Stelle für alle CTAs (.btn, .nav__cta). */
  --cta-text-nudge: 0.1em;

  --font-display: "Josefin Sans", "Century Gothic", sans-serif;
  --font-body: "Work Sans", "Segoe UI", sans-serif;

  --measure: 62ch;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-5: 5rem;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.15;
  margin: 0 0 var(--space-2);
}

h2 { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem); }
h3 { font-size: 1.05rem; letter-spacing: 0.06em; text-transform: none; color: var(--color-ink); }

p { margin: 0 0 var(--space-2); max-width: var(--measure); }

a { color: inherit; }

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

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-gold);
  color: var(--color-hero-bg);
  padding: var(--space-1) var(--space-2);
  z-index: 200;
}
.skip-link:focus {
  left: var(--space-2);
  top: var(--space-2);
}

:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
}

.link-inline {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: var(--color-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.link-inline:hover { color: var(--color-gold-hover); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: calc(0.9em + var(--cta-text-nudge)) 2em calc(0.9em - var(--cta-text-nudge));
  border: 2px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn--gold {
  background: var(--color-gold);
  color: var(--color-hero-bg);
}
.btn--gold:hover { background: var(--color-gold-hover); }
.btn--gold-outline {
  background: transparent;
  color: var(--color-gold);
  border-color: var(--color-gold);
}
.btn--gold-outline:hover {
  background: var(--color-gold);
  color: var(--color-bg);
}

/* ============================================================
   Header / Nav
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-divider);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  max-width: 1200px;
  margin: 0 auto;
  gap: var(--space-2);
}
.nav__brand {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  font-size: 1.05rem;
}
.nav__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  background: none;
  border: 1px solid var(--color-divider);
  padding: 0.4em 0.8em;
  font: inherit;
  cursor: pointer;
}
.nav__toggle-icon {
  width: 16px; height: 2px;
  background: var(--color-ink);
  position: relative;
}
.nav__toggle-icon::before, .nav__toggle-icon::after {
  content: "";
  position: absolute; left: 0;
  width: 16px; height: 2px;
  background: var(--color-ink);
}
.nav__toggle-icon::before { top: -5px; }
.nav__toggle-icon::after { top: 5px; }

.nav__menu {
  list-style: none;
  margin: 0;
  padding: var(--space-2);
  display: none;
  flex-direction: column;
  gap: var(--space-1);
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-divider);
}
.nav__menu.is-open { display: flex; } /* Klasse wird zur Laufzeit von js/script.js (classList.toggle) gesetzt */
.nav__menu a {
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.5em 0;
  display: block;
}
.nav__cta {
  display: none;
  background: var(--color-gold);
  color: var(--color-hero-bg);
  text-decoration: none;
  padding: calc(0.5em + var(--cta-text-nudge)) 1.1em calc(0.5em - var(--cta-text-nudge));
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.03em;
  font-size: 0.9rem;
  flex-shrink: 0;
}

@media (min-width: 780px) {
  .nav__toggle { display: none; }
  .nav__menu {
    display: flex;
    flex-direction: row;
    position: static;
    background: none;
    border: none;
    padding: 0;
    gap: var(--space-4);
  }
  .nav__menu a { padding: 0; }
  .nav__cta { display: inline-block; }
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: clamp(520px, 60vh, 760px); /* 2,35:1-Letterbox-Crop (1920x820); bei Bedarf hier justieren */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-hero-bg);
  color: #F5F3EE;
  text-align: center;
  padding: var(--space-4) var(--space-3);
}

.hero__slideshow {
  position: absolute;
  inset: 0;
}
.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.4s ease;
  background: var(--color-hero-bg);
  animation: kenburns 7s ease-in-out infinite;
}
.hero__slide.is-active { opacity: 1; }
.hero__slide picture,
.hero__slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@keyframes kenburns {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .hero__slide { animation: none; transition: none; }
}

.hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14,13,11,0.35) 0%, rgba(14,13,11,0.75) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}
.hero__logo {
  width: min(90vw, 520px);
  height: auto;
  margin: 0 auto var(--space-2);
}
.hero__title {
  color: #F5F3EE;
  font-size: clamp(1.6rem, 1.1rem + 2vw, 2.6rem);
}
.hero__subline {
  color: rgba(245, 243, 238, 0.85);
  margin: 0 auto var(--space-3);
}

/* ============================================================
   Event Details
   ============================================================ */
.details {
  padding: var(--space-5) var(--space-3);
  max-width: 1200px;
  margin: 0 auto;
}
.details__grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}
.details__card {
  border-top: 2px solid var(--color-gold);
  padding-top: var(--space-2);
}
.details__card h3 { color: var(--color-ink-secondary); font-weight: 600; }
.details__cta { text-align: center; margin-top: var(--space-4); }

@media (min-width: 780px) {
  .details__grid { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================================
   About / Werk
   ============================================================ */
.about {
  background: #FAF9F6;
  padding: var(--space-5) var(--space-3);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}
.about__text {
  max-width: 760px;
  margin: 0 auto;
}
.fact-list {
  margin: var(--space-3) 0 0;
  display: grid;
  gap: var(--space-2) var(--space-3);
  grid-template-columns: 1fr;
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-divider);
}
.fact-list > div { display: flex; justify-content: space-between; gap: var(--space-2); border-bottom: 1px solid var(--color-divider); padding-bottom: var(--space-1); }
.fact-list dt { color: var(--color-ink-secondary); font-size: 0.9rem; flex-shrink: 0; }
.fact-list dd { margin: 0; text-align: right; font-weight: 500; }

@media (min-width: 780px) {
  .fact-list { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   Orchester
   ============================================================ */
.orchestra {
  padding: var(--space-5) var(--space-3);
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  gap: var(--space-4);
  align-items: center;
}
.orchestra__media {
  display: flex;
  justify-content: center;
}
.orchestra__text {
  text-align: left;
}
.orchestra__photo {
  width: min(70vw, 320px);
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}
.orchestra__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (min-width: 780px) {
  .orchestra { grid-template-columns: 320px 1fr; }
}

/* ============================================================
   Cross-Promotion Neujahrsball
   ============================================================ */
.cross-promo {
  padding: var(--space-5) var(--space-3);
  display: flex;
  justify-content: center;
}
.cross-promo__box {
  max-width: 640px;
  width: 100%;
  border: 1px solid var(--color-gold);
  padding: var(--space-4);
  text-align: center;
}
.cross-promo__eyebrow {
  color: var(--color-ink-secondary);
  font-size: 0.85rem;
  margin-bottom: var(--space-1);
}
.cross-promo__box p { margin-left: auto; margin-right: auto; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding: var(--space-4) var(--space-3);
  color: var(--color-ink-secondary);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.site-footer__organizer {
  font-weight: 600;
  color: var(--color-ink);
  margin: 0;
}
.site-footer__legal {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  padding: 0;
  margin: var(--space-2) 0 0;
  flex-wrap: wrap;
}

/* ============================================================
   Modals
   Sichtbarkeit wird über das native hidden-Attribut gesteuert;
   js/script.js setzt/entfernt es beim Öffnen/Schließen.
   ============================================================ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(14,13,11,0.6);
  padding: var(--space-3);
}
.modal[hidden] { display: none; }
.modal__panel {
  background: var(--color-bg);
  max-width: 560px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  padding: var(--space-4);
  position: relative;
}
.modal__close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--color-ink);
}