/*
 * Katja & Darius – Basis & Komponenten (Referenz-Implementierung aus Strang A).
 * Mobile-first. Setzt fonts.css + tokens.css voraus. Strang D darf erweitern,
 * Tokens aber nicht hart überschreiben (Werte gehören in tokens.css).
 */

/* ─── Reset / Basis ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
/* The [hidden] attribute is how app.js toggles #hero vs. #guest-area (and a
   few other elements) after login. By default that only works because the
   UA stylesheet's `[hidden] { display: none }` rule happens to win -- but
   any component rule with equal specificity (e.g. `.hero { display: grid }`)
   that comes later in the cascade silently overrides it, so the element
   stays laid out and visible even though `.hidden === true`. Verified live:
   without this, #hero stayed fully visible (and #guest-area rendered below
   it) after a successful login. `!important` here is intentional and safe:
   nothing should ever want to out-rank the hidden attribute with a plain
   display rule. */
[hidden] { display: none !important; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--space-s));
  background: var(--color-bg);
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  min-height: 100svh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overflow-x: clip;
}
img, svg, video, picture { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: var(--color-selection); color: var(--c-chestnut-900); }
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: 2px;
}
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.skip-link {
  position: fixed; left: var(--space-s); top: var(--space-s); z-index: var(--z-toast);
  padding: var(--space-2xs) var(--space-s); background: var(--c-chestnut); color: var(--c-ivory);
  transform: translateY(-200%); transition: transform var(--dur-fast) var(--ease-out);
}
.skip-link:focus { transform: none; }

/* ─── Typografie ────────────────────────────────────────────────── */
.t-display, h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: var(--weight-light);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-display);
  font-variant-numeric: lining-nums;
  font-feature-settings: "lnum" 1, "kern" 1;
  margin: 0;
  text-wrap: balance;
}
h1, .t-h1 { font-size: var(--step-5); line-height: var(--leading-tight); }
h2, .t-h2 { font-size: var(--step-4); }
h3, .t-h3 { font-size: var(--step-2); font-weight: var(--weight-regular); }
.t-caps {                 /* Versal-Überschrift wie „DETAILS“ in der Vorlage */
  text-transform: uppercase;
  letter-spacing: -0.005em;
  line-height: var(--leading-tight);
}
.t-script {
  font-family: var(--font-script);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1;
  text-transform: none;
}
.t-lead {
  font-family: var(--font-display);
  font-size: var(--step-1);
  font-weight: var(--weight-regular);
  line-height: 1.45;
  font-style: italic;
  color: var(--color-text);
}
.t-serif-body {
  font-family: var(--font-display);
  font-size: calc(var(--step-0) * 1.12);
  line-height: var(--leading-loose);
  font-weight: var(--weight-medium);
}
.t-meta { font-size: var(--step--1); color: var(--color-text-muted); }
.t-label {                /* sparsam: Formularlabels, Metadaten */
  font-size: var(--step--1);
  font-weight: var(--weight-medium);
  letter-spacing: 0.02em;
  color: var(--color-text);
}
.t-tagline {              /* einziges getracktes Versal-Element: Hero-Tagline (aus Vorlage) */
  font-size: var(--step--1);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--color-text-muted);
}
p { margin: 0 0 var(--space-s); max-width: var(--measure); text-wrap: pretty; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.22em; text-decoration-color: var(--color-line-strong); transition: text-decoration-color var(--dur-fast) var(--ease-out); }
a:hover { text-decoration-color: currentColor; }

/* Überschriften-Paar aus der Vorlage: Script-Kicker über Versalwort, überlappend */
.heading-pair {
  display: grid;
  justify-items: center;
  text-align: center;
  color: var(--color-text);
}
.heading-pair__script {
  font-family: var(--font-script);
  font-size: calc(var(--step-5) * 0.92);
  line-height: 0.8;
  margin-bottom: -0.28em;          /* Überlappung mit dem Versalwort */
  transform: translateX(-0.35em) rotate(-4deg);
  position: relative; z-index: 1;
}
.heading-pair__caps {
  font-family: var(--font-display);
  font-weight: var(--weight-light);
  font-size: var(--step-6);
  text-transform: uppercase;
  line-height: 0.92;
  letter-spacing: -0.01em;
}
.heading-pair--start { justify-items: start; text-align: start; }
.heading-pair--start .heading-pair__script { transform: translateX(-0.08em) rotate(-4deg); }

/* ─── Layout ────────────────────────────────────────────────────── */
.container { width: min(100% - 2 * var(--gutter), var(--container)); margin-inline: auto; }
.container--narrow { width: min(100% - 2 * var(--gutter), var(--container-narrow)); margin-inline: auto; }
.section { padding-block: var(--space-3xl); position: relative; }
.section--pearl { background: var(--color-bg-section); }
.section--porcelain { background: var(--color-bg-raised); }
.section--inverse { background: var(--color-bg-inverse); color: var(--color-text-inverse); }
.stack > * + * { margin-top: var(--stack-gap, var(--space-s)); }
.grid-12 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-l) var(--space-m);
}
@media (min-width: 48rem) { .grid-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); } }
.divider {                /* kurze Haarlinie wie in der Vorlage (53px) */
  width: 3.3rem; height: 1px; border: 0; margin: var(--space-l) auto;
  background: currentColor; opacity: 0.55;
}

/* Spitzenkante: Übergang zwischen Sektionen (Vorlage: weiße Spitze) */
.lace-edge {
  position: absolute; left: 0; right: 0; height: var(--lace-height);
  background: url("../assets/brand/lace-edge.webp") repeat-x left bottom / auto 100%;
  pointer-events: none;
}
.lace-edge--bottom { bottom: -1px; }
.lace-edge--top { top: -1px; transform: scaleY(-1); }
.lace-edge--tint { filter: brightness(0.965); } /* Spitze auf weißem Grund sichtbar halten */

/* ─── Header / Navigation ───────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: var(--z-header);
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-s);
  padding-inline: var(--gutter);
  background: rgb(234 234 232 / 0.78);
  -webkit-backdrop-filter: saturate(1.2) blur(14px);
  backdrop-filter: saturate(1.2) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-out), background-color var(--dur-base) var(--ease-out);
}
.site-header[data-scrolled] { border-bottom-color: var(--color-line); }
.site-header__mark { display: inline-flex; align-items: center; min-height: var(--tap-min); color: var(--color-text); }
.site-header__mark svg, .site-header__mark img { width: 3.1rem; height: auto; }
.site-nav { display: none; }
@media (min-width: 64rem) {
  .site-nav { display: flex; gap: var(--space-m); }
  .site-nav a {
    position: relative; text-decoration: none; font-size: var(--step--1); letter-spacing: 0.04em;
    min-height: var(--tap-min); display: inline-flex; align-items: center;
  }
  .site-nav a::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0.7rem; height: 1px; background: currentColor;
    transform: scaleX(0); transform-origin: right; transition: transform var(--dur-base) var(--ease-out);
  }
  .site-nav a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
}
.header-actions { display: flex; align-items: center; gap: var(--space-2xs); }

/* Sprachumschalter: Segment DE | EN | RU */
.lang-switch {
  display: inline-flex; padding: 3px; gap: 2px;
  border: var(--hairline); border-radius: var(--radius-pill);
  background: rgb(245 245 245 / 0.6);
}
.lang-switch a, .lang-switch button {
  min-width: 2.5rem; min-height: 2.25rem; padding: 0 0.6rem;
  display: inline-grid; place-items: center;
  border: 0; border-radius: var(--radius-pill); background: transparent; cursor: pointer;
  font-size: var(--step--2); font-weight: var(--weight-medium); letter-spacing: 0.08em; text-decoration: none;
  color: var(--color-text-muted);
  transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.lang-switch [aria-current="true"], .lang-switch [aria-pressed="true"] { background: var(--c-chestnut); color: var(--c-ivory); }

.menu-button {
  width: var(--tap-min); height: var(--tap-min); display: inline-grid; place-items: center;
  border: 0; background: transparent; cursor: pointer; color: var(--color-text);
}
@media (min-width: 64rem) { .menu-button { display: none; } }
.menu-button span { position: relative; display: block; width: 1.35rem; height: 1px; background: currentColor; transition: background-color var(--dur-fast) var(--ease-out); }
.menu-button span::before, .menu-button span::after { content: ""; position: absolute; left: 0; width: 100%; height: 1px; background: currentColor; transition: transform var(--dur-fast) var(--ease-out), top var(--dur-fast) var(--ease-out); }
.menu-button span::before { top: -0.38rem; }
.menu-button span::after { top: 0.38rem; }
.menu-button[aria-expanded="true"] span { background: transparent; }
.menu-button[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.menu-button[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

/* Vollbild-Menü (Mobil) */
.menu-sheet {
  position: fixed; inset: 0; z-index: var(--z-sheet); min-height: 100svh;
  display: flex; flex-direction: column; justify-content: space-between;
  padding: calc(var(--header-h) + env(safe-area-inset-top) + var(--space-s)) var(--gutter) calc(var(--space-l) + env(safe-area-inset-bottom));
  background: var(--c-pearl); opacity: 0; visibility: hidden; pointer-events: none;
  transform: translateY(-0.75rem);
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), visibility 0s linear var(--dur-base);
}
.menu-sheet[aria-hidden="false"] { opacity: 1; visibility: visible; pointer-events: auto; transform: none; transition-delay: 0s; }
.menu-sheet__top { display: flex; align-items: center; justify-content: space-between; min-height: var(--tap-min); }
.menu-sheet__close { width: var(--tap-min); height: var(--tap-min); display: grid; place-items: center; border: 1px solid var(--color-line-strong); border-radius: 50%; background: transparent; cursor: pointer; }
.menu-sheet__close span, .menu-sheet__close span::after { display: block; width: 1.25rem; height: 1px; background: currentColor; }
.menu-sheet__close span { transform: rotate(45deg); }
.menu-sheet__close span::after { content: ""; transform: rotate(90deg); }
.menu-sheet__nav { display: grid; gap: clamp(0.2rem, 1.5vw, 0.7rem); margin-block: auto; padding-block: var(--space-l); }
.menu-sheet__nav a { font-family: var(--font-display); font-weight: var(--weight-light); font-size: clamp(2rem, 10vw, 4.5rem); line-height: 0.95; letter-spacing: -0.02em; text-decoration: none; padding-block: 0.18em; }
.menu-sheet__nav a:focus-visible { outline-offset: 0; }
.menu-sheet__note { margin: 0; letter-spacing: 0.08em; text-transform: uppercase;
}
@media (min-width: 64rem) { .menu-sheet { display: none; } }
@media (prefers-reduced-motion: reduce) { .menu-sheet, .menu-button span, .menu-button span::before, .menu-button span::after { transition: none; } }

/* ─── Buttons ───────────────────────────────────────────────────── */
.btn {
  --btn-bg: var(--c-chestnut); --btn-fg: var(--c-ivory); --btn-bd: var(--c-chestnut);
  position: relative; isolation: isolate; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6em;
  min-height: 3.25rem; padding: 0 1.6rem;
  border: 1px solid var(--btn-bd); border-radius: var(--radius-xs);
  background: var(--btn-bg); color: var(--btn-fg);
  font-family: var(--font-sans); font-size: var(--step--1); font-weight: var(--weight-medium); letter-spacing: 0.06em;
  text-decoration: none; cursor: pointer; user-select: none;
  transition: transform var(--dur-instant) var(--ease-out), color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.btn::before {             /* Tinte füllt sich von unten (Hover/Fokus) */
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--c-chestnut-700);
  transform: translateY(101%); transition: transform var(--dur-base) var(--ease-out);
}
.btn:hover::before, .btn:focus-visible::before { transform: none; }
.btn:active { transform: scale(0.975); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.45; pointer-events: none; }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--c-chestnut); --btn-bd: var(--color-line-strong); }
.btn--ghost::before { background: var(--c-chestnut); }
.btn--ghost:hover, .btn--ghost:focus-visible { color: var(--c-ivory); border-color: var(--c-chestnut); }
.btn--quiet { --btn-bg: transparent; --btn-fg: var(--c-chestnut); --btn-bd: transparent; padding-inline: 0.4rem; text-decoration: underline; text-underline-offset: 0.3em; text-decoration-color: var(--color-line-strong); }
.btn--quiet::before { display: none; }
.btn--block { width: 100%; }
.btn--icon { width: 3.25rem; padding: 0; }
.btn svg { width: 1.15em; height: 1.15em; flex: none; }
.btn .btn__spinner { width: 1em; height: 1em; border: 1.5px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(1turn); } }

/* Kartenaktions-Buttons (Apple/Google/Waze) */
.map-actions { display: grid; gap: var(--space-2xs); }
@media (min-width: 36rem) { .map-actions { grid-template-columns: repeat(3, 1fr); } }
.map-actions .btn { justify-content: flex-start; padding-inline: 1.1rem; }
.map-actions .btn span:last-child { margin-left: auto; opacity: 0.6; }

/* ─── Formulare ─────────────────────────────────────────────────── */
.field { display: grid; gap: 0.45rem; }
.field__hint { font-size: var(--step--1); color: var(--color-text-muted); }
.field__error { font-size: var(--step--1); color: var(--c-danger); }
.input, .textarea, .select {
  width: 100%; min-height: 3.25rem; padding: 0.8rem 1rem;
  border: 1px solid var(--color-line-strong); border-radius: var(--radius-xs);
  background: var(--c-pearl-100);
  font-size: max(16px, var(--step-0));      /* ≥16px: kein iOS-Zoom */
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background-color var(--dur-fast);
}
.input:hover, .textarea:hover { border-color: var(--c-chestnut-a60); }
.input:focus, .textarea:focus, .select:focus { outline: none; border-color: var(--c-chestnut); box-shadow: 0 0 0 3px var(--c-chestnut-a15); background: var(--c-lace); }
.input[aria-invalid="true"] { border-color: var(--c-danger); }
.textarea { min-height: 8rem; resize: vertical; }

@keyframes shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }

/* Auswahl-Kacheln (RSVP / Quiz-Antworten) */
.choice { position: relative; display: block; }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span {
  display: flex; align-items: center; gap: 0.8rem; min-height: 3.5rem; padding: 0.8rem 1rem;
  border: 1px solid var(--color-line-strong); border-radius: var(--radius-xs); background: var(--c-pearl-100);
  cursor: pointer; transition: border-color var(--dur-fast), background-color var(--dur-fast), transform var(--dur-instant);
}
.choice span::before { content: ""; width: 1.1rem; height: 1.1rem; border: 1px solid var(--c-chestnut-a60); border-radius: 50%; flex: none; transition: box-shadow var(--dur-base) var(--ease-spring), border-color var(--dur-fast); }
.choice input:checked + span { border-color: var(--c-chestnut); background: var(--c-lace); }
.choice input:checked + span::before { border-color: var(--c-chestnut); box-shadow: inset 0 0 0 4px var(--c-lace), inset 0 0 0 10px var(--c-chestnut); }
.choice input:focus-visible + span { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.choice span:active { transform: scale(0.99); }

/* ─── Karten ────────────────────────────────────────────────────── */
.card {
  background: var(--color-bg-raised);
  border: var(--hairline);
  padding: var(--space-l) var(--space-m);
  border-radius: var(--radius-xs);
}
.card--arch {              /* Bogenfenster-Motiv (Sôltē-Kuppeln) */
  border-radius: var(--radius-arch);
  padding-top: var(--space-2xl);
  text-align: center;
}
.arch-media {
  border-radius: var(--radius-arch);
  overflow: hidden; aspect-ratio: 4 / 5; background: var(--c-pearl-400);
}
.arch-media img { width: 100%; height: 100%; object-fit: cover; }

/* Info-Liste (Programm/Ablauf) */
.timeline { list-style: none; margin: 0; padding: 0; display: grid; }
.timeline li { display: grid; grid-template-columns: 5.2rem 1fr; gap: var(--space-s); padding-block: var(--space-s); border-top: var(--hairline); }
.timeline time { font-family: var(--font-display); font-size: var(--step-2); font-weight: var(--weight-light); line-height: 1; font-variant-numeric: lining-nums tabular-nums; }

/* ─── Toast ─────────────────────────────────────────────────────── */
.toast {
  position: fixed; left: 50%; bottom: calc(var(--space-m) + env(safe-area-inset-bottom)); z-index: var(--z-toast);
  translate: -50% 0;
  padding: 0.85rem 1.2rem; min-width: min(90vw, 18rem); text-align: center;
  background: var(--c-chestnut); color: var(--c-ivory); border-radius: var(--radius-xs); box-shadow: var(--shadow-2);
  font-size: var(--step--1);
  opacity: 0; transform: translateY(12px);
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-spring);
  pointer-events: none;
}
.toast[data-show] { opacity: 1; transform: none; }

/* ─── Scroll-Reveal ─────────────────────────────────────────────── */
/* JS setzt [data-reveal] → [data-revealed]; ohne JS bleibt alles sichtbar (.js am <html>). */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(var(--reveal-shift));
  transition: opacity var(--dur-reveal) var(--ease-out), transform var(--dur-reveal) var(--ease-out);
  transition-delay: calc(var(--i, 0) * var(--stagger));
}
/* Maske auf dem Kind, nicht am beobachteten Element: IntersectionObserver
   wertet clip-path des Ziels mit aus und würde sonst nie auslösen. */
.js [data-reveal="mask"] { opacity: 1; transform: none; }
.js [data-reveal="mask"] > * {
  clip-path: inset(100% 0 0 0);
  transform: scale(1.06); transform-origin: 50% 100%;
  transition: clip-path calc(var(--dur-reveal) * 1.3) var(--ease-emph), transform calc(var(--dur-reveal) * 1.8) var(--ease-emph);
}
.js [data-revealed] { opacity: 1; transform: none; }
.js [data-reveal="mask"][data-revealed] > * { clip-path: inset(0 0 0 0); transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js [data-reveal="mask"] > * { clip-path: none; transform: none; opacity: 0; transition: opacity 200ms linear; }
  .js [data-reveal="mask"][data-revealed] > * { opacity: 1; }
}

/* Parallax (nur wo unterstützt, CSS scroll-driven, kein JS) */
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .parallax-soft { animation: parallax-soft linear both; animation-timeline: view(); animation-range: entry 0% exit 100%; }
    @keyframes parallax-soft { from { transform: translateY(6%); } to { transform: translateY(-6%); } }
  }
}