/* AMC dni otvorených dverí – Styling nach at.amc.info: Off-White, Helvetica Neue, Pill-Buttons, dunkle Bildbühnen */

:root {
  --ink: #1a1a1a;
  --ink-70: rgba(26, 26, 26, .7);
  --ink-12: rgba(26, 26, 26, .12);
  --white: #fff;
  --paper: #fafafa;
  --font: "Helvetica Neue", Arial, "Liberation Sans", sans-serif;
  --container: 1200px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  font-weight: 400;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.1; letter-spacing: -.01em; font-weight: 500; }
h1 { font-size: clamp(2.4rem, 5.4vw, 4rem); }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.9rem); }
h3 { font-size: clamp(1.15rem, 1.6vw, 1.35rem); line-height: 1.3; }
p { margin: 0 0 1em; }
.center { text-align: center; }

.container { width: min(100% - 2.5rem, var(--container)); margin-inline: auto; }
.eyebrow {
  display: inline-block;
  font-size: .78rem; letter-spacing: .14em; text-transform: uppercase;
  font-weight: 500; color: var(--ink-70); margin-bottom: 1.2rem;
}
.eyebrow-light { color: rgba(255,255,255,.75); }

/* Scroll-Fortschritt */
.progress {
  position: fixed; top: 0; left: 0; z-index: 100;
  width: 100%; height: 2px; background: var(--ink);
  transform: scaleX(0); transform-origin: 0 50%;
}

/* Buttons – Pill wie auf at.amc.info */
.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  background: var(--ink); color: var(--white);
  padding: .9rem 1.8rem; border: 1px solid var(--ink); border-radius: 60px;
  font: inherit; font-size: .95rem; font-weight: 700; text-decoration: none; cursor: pointer;
  overflow: hidden; isolation: isolate; white-space: nowrap;
  transition: color .35s var(--ease), transform .3s var(--ease), border-color .35s;
}
.btn::before {
  content: ""; position: absolute; inset: 0; z-index: -1; background: var(--white);
  transform: translateY(101%); transition: transform .45s var(--ease);
}
.btn:hover { color: var(--ink); }
.btn:hover::before { transform: translateY(0); }
.btn-small { padding: .6rem 1.25rem; font-size: .88rem; }
.btn-block { width: 100%; }
.btn-light { background: var(--white); color: var(--ink); border-color: var(--white); }
.btn-light::before { background: var(--ink); }
.btn-light:hover { color: var(--white); }
.btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,.7); }
.btn-ghost::before { background: var(--white); }
.btn-ghost:hover { color: var(--ink); border-color: var(--white); }
.btn[disabled] { opacity: .6; cursor: default; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,250,250,.9); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s;
}
.site-header.scrolled { border-color: var(--ink-12); }
.header-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: var(--header-h); }
.logo { display: inline-flex; align-items: center; text-decoration: none; justify-self: start; }
.logo img { height: 42px; width: auto; transition: height .35s var(--ease); }
.site-header.scrolled .logo img { height: 36px; }
.header-nav { display: flex; gap: 2rem; justify-self: center; }
.header-nav a { text-decoration: none; font-size: .95rem; font-weight: 500; color: var(--ink); position: relative; padding: .3rem 0; }
.header-nav a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: var(--ink); transform: scaleX(0); transform-origin: 0 50%; transition: transform .35s var(--ease); }
.header-nav a:hover::after { transform: scaleX(1); }
.header-inner .btn { justify-self: end; }

/* Bildrahmen */
.img-frame { position: relative; background: var(--ink-12); overflow: hidden; }
.img-frame picture, .img-frame img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.img-frame:hover img { transform: scale(1.04); }
.img-portrait  { aspect-ratio: 4 / 5; width: 100%; }
.img-square    { aspect-ratio: 1 / 1; }
.img-landscape { aspect-ratio: 4 / 3; }

/* Hero – dunkle Vollbild-Bildbühne */
.hero {
  position: relative; min-height: calc(100svh - var(--header-h)); min-height: max(560px, calc(100svh - var(--header-h)));
  display: flex; align-items: center; justify-content: center; text-align: center;
  color: var(--white); overflow: hidden; background: var(--ink);
}
.hero-bg { position: absolute; inset: -12% 0; z-index: 0; will-change: transform; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.35) 0%, rgba(0,0,0,.45) 60%, rgba(0,0,0,.65) 100%); }
.hero-content { position: relative; z-index: 1; max-width: 880px; padding: clamp(4rem, 10vw, 7rem) 0; }
.hero h1 { margin-bottom: 1.2rem; font-weight: 500; letter-spacing: -.015em; }
/* Hero-Einblendung per CSS – startet mit dem ersten Paint, unabhängig vom JS */
.hero-content > * { animation: heroIn .6s var(--ease) both; }
.hero-content > :nth-child(2) { animation-delay: .08s; }
.hero-content > :nth-child(3) { animation-delay: .16s; }
.hero-content > :nth-child(4) { animation-delay: .24s; }
.hero-content > :nth-child(5) { animation-delay: .32s; }
@keyframes heroIn { from { opacity: 0; transform: translateY(14px); } }
.hero-lead { font-size: clamp(1rem, 1.4vw, 1.2rem); color: rgba(255,255,255,.88); max-width: 40em; margin: 0 auto 2rem; }
.hero-actions { display: flex; justify-content: center; gap: .8rem; flex-wrap: wrap; }
.hero-note { margin: 1.6rem 0 0; font-size: .82rem; letter-spacing: .06em; color: rgba(255,255,255,.7); }

/* Laufband */
.marquee { border-bottom: 1px solid var(--ink-12); overflow: hidden; padding: .85rem 0; background: var(--white); }
.marquee-track { display: flex; width: max-content; animation: marquee var(--duration, 30s) linear infinite; }
.marquee-track span { display: inline-flex; align-items: center; white-space: nowrap; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 500; color: var(--ink-70); padding: 0 1.4rem; }
.marquee-track span::after { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--ink); margin-left: 2.8rem; opacity: .6; }
@keyframes marquee { to { transform: translateX(calc(var(--shift, 50%) * -1)); } }

/* Longevity-Intro – zentriert */
.intro { padding: clamp(4rem, 9vw, 8rem) 0 clamp(3rem, 7vw, 6rem); }
.intro-inner { max-width: 760px; margin-inline: auto; text-align: center; }
.intro-inner h2 { margin-bottom: 1.4rem; }
.intro-inner p { color: var(--ink-70); font-size: 1.05rem; }
.intro-lead { font-size: clamp(1.2rem, 1.9vw, 1.5rem) !important; line-height: 1.4; color: var(--ink) !important; }
.intro-strong { font-weight: 500; color: var(--ink) !important; }

/* Drei Vorteile mit Line-Icons */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: clamp(3rem, 6vw, 5rem); }
.feature { text-align: center; padding: 0 1rem; }
.feature-icon {
  display: inline-grid; place-items: center; width: 72px; height: 72px; margin-bottom: 1.2rem;
  border: 1.5px solid var(--ink); border-radius: 50%; color: var(--ink);
  transition: background .4s var(--ease), color .4s var(--ease), transform .4s var(--ease);
}
.feature-icon svg { width: 34px; height: 34px; }
.feature:hover .feature-icon { background: var(--ink); color: var(--white); transform: translateY(-3px); }
.feature h3 { margin-bottom: .4rem; }
.feature p { color: var(--ink-70); margin: 0; font-size: .98rem; }

/* Events – horizontal per Scroll */
.hscroll { position: relative; background: var(--white); border-top: 1px solid var(--ink-12); border-bottom: 1px solid var(--ink-12); }
.hscroll-sticky { position: sticky; top: var(--header-h); height: calc(100vh - var(--header-h)); height: calc(100svh - var(--header-h)); display: flex; flex-direction: column; justify-content: center; gap: clamp(1.5rem, 3vw, 3rem); overflow: hidden; }
.events-head { text-align: center; }
.events-head h2 { margin: 0; }
.hscroll-track { display: flex; align-items: flex-start; gap: 1.25rem; width: max-content; padding-left: max(1.25rem, (100vw - var(--container)) / 2); padding-right: max(1.25rem, (100vw - var(--container)) / 2); will-change: transform; }
.event-card { margin: 0; flex: none; width: clamp(240px, 24vw, 360px); }
.event-card .img-frame { width: 100%; }
.event-card figcaption { margin-top: .6rem; font-size: .85rem; color: var(--ink-70); }

/* Gründe – Scrollytelling */
.reasons { padding: clamp(4rem, 9vw, 8rem) 0; }
.reasons-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.reasons-media { position: sticky; top: calc(var(--header-h) + 1.5rem); }
.stack { position: relative; aspect-ratio: 4 / 5; }
.stack .img-frame { position: absolute; inset: 0; width: 100%; height: 100%; aspect-ratio: auto; opacity: 0; transform: scale(1.03); transition: opacity .7s var(--ease), transform .9s var(--ease); }
.stack .img-frame.is-active { opacity: 1; transform: none; }
.reasons-list { list-style: none; margin: 0; padding: 0; }
.reason { padding: clamp(2rem, 4vw, 3.5rem) 0; border-top: 1px solid var(--ink-12); opacity: .35; transition: opacity .5s var(--ease); }
.reason:first-child { border-top: 0; padding-top: 0; }
.reason.is-active { opacity: 1; }
.num { display: block; font-size: .8rem; font-weight: 500; letter-spacing: .14em; color: var(--ink-70); margin-bottom: 1rem; }
.reason h3 { font-size: clamp(1.3rem, 2vw, 1.7rem); margin-bottom: .8rem; }
.reason p { margin: 0 0 .8em; color: var(--ink-70); max-width: 36em; font-size: 1.02rem; }
.reason p:last-child { margin-bottom: 0; }

/* Generácie – čísla */
.stats { padding: clamp(4rem, 9vw, 8rem) 0; background: var(--white); border-top: 1px solid var(--ink-12); }
.stats h2 { margin-bottom: 3rem; max-width: 22em; margin-inline: auto; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.stat { padding: 1rem 2rem; text-align: center; display: flex; flex-direction: column; gap: .5rem; border-left: 1px solid var(--ink-12); }
.stat:first-child { border-left: 0; }
.stat strong { font-size: clamp(2.4rem, 4.5vw, 3.6rem); line-height: 1; font-weight: 500; letter-spacing: -.02em; }
.stat span { color: var(--ink-70); font-size: .98rem; max-width: 22em; margin-inline: auto; }

/* Pozvánka – dunkle Vollbild-Bildbühne */
.cta-band { position: relative; color: var(--white); text-align: center; overflow: hidden; background: var(--ink); min-height: 640px; display: flex; align-items: center; }
.cta-bg { position: absolute; inset: -12% 0; z-index: 0; will-change: transform; }
.cta-bg img { width: 100%; height: 100%; object-fit: cover; }
.cta-bg::after { content: ""; position: absolute; inset: 0; background: rgba(0,0,0,.55); }
.cta-inner { position: relative; z-index: 1; max-width: 800px; padding: clamp(4rem, 9vw, 7rem) 0; }
.cta-inner h2 { margin-bottom: 1.2rem; }
.cta-inner p { color: rgba(255,255,255,.85); font-size: 1.02rem; }
.cta-inner .btn { margin-top: 1rem; }

/* FAQ */
.faq { padding: clamp(4rem, 9vw, 8rem) 0; }
.faq-inner { max-width: 820px; }
.faq h2 { margin-bottom: 2.5rem; }
.faq-list details { border-top: 1px solid var(--ink-12); }
.faq-list details:last-child { border-bottom: 1px solid var(--ink-12); }
.faq-list summary {
  cursor: pointer; list-style: none; padding: 1.3rem 3rem 1.3rem 0;
  font-weight: 500; font-size: 1.1rem; position: relative;
}
.faq-list summary::-webkit-details-marker { display: none; }
.plus { position: absolute; right: 0; top: 50%; width: 16px; height: 16px; transform: translateY(-50%); }
.plus::before, .plus::after { content: ""; position: absolute; background: var(--ink); transition: transform .4s var(--ease); }
.plus::before { left: 0; top: 7px; width: 16px; height: 1.5px; }
.plus::after { left: 7px; top: 0; width: 1.5px; height: 16px; }
details[open] .plus::after { transform: rotate(90deg); }
.faq-body { overflow: hidden; }
.faq-content { padding: 0 0 1.5rem; color: var(--ink-70); max-width: 44em; }
.faq-content p:last-child { margin-bottom: 0; }

/* Registrácia */
.signup { padding: clamp(4rem, 9vw, 8rem) 0; background: var(--white); border-top: 1px solid var(--ink-12); }
.signup-inner { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.signup-copy { position: sticky; top: calc(var(--header-h) + 1.5rem); }
.signup-copy > p { color: var(--ink-70); }
.signup-perks { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: .7rem; }
.signup-perks li { position: relative; padding-left: 1.7rem; }
.signup-perks li::before { content: ""; position: absolute; left: 0; top: .55em; width: 11px; height: 6px; border-left: 1.5px solid var(--ink); border-bottom: 1.5px solid var(--ink); transform: rotate(-45deg); }
.dates { margin-top: 1.8rem; }
.dates h3 { font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-70); margin-bottom: .8rem; }
.dates ul { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--ink-12); }
.dates li { padding: .7rem 0; border-bottom: 1px solid var(--ink-12); font-size: .95rem; }
.dates li span { display: block; color: var(--ink-70); font-size: .85rem; }
.faq-content ul { padding-left: 1.2rem; margin: 0 0 1em; }
.faq-content li { margin-bottom: .3rem; }
.field select optgroup { font-weight: 700; font-style: normal; }
.notice { margin-top: 1.8rem; padding: 1rem 1.2rem; border-left: 2px solid var(--ink); background: var(--paper); font-size: .95rem; color: var(--ink) !important; }
.signup-closing { margin-top: 1.2rem; font-weight: 500; color: var(--ink) !important; }
.signup-form { background: var(--paper); border: 1px solid var(--ink-12); padding: clamp(1.5rem, 3vw, 2.6rem); }
.signup-form .field, .signup-form .btn { opacity: 0; transform: translateY(14px); transition: opacity .6s var(--ease), transform .6s var(--ease); transition-delay: calc(.15s + var(--i, 0) * .08s); }
.signup-form.in .field, .signup-form.in .btn { opacity: 1; transform: none; }
.field { margin-bottom: 1.25rem; }
.field label { display: block; font-weight: 500; font-size: .9rem; margin-bottom: .45rem; }
.field input:not([type="checkbox"]), .field select {
  width: 100%; font: inherit; color: var(--ink); background: var(--white);
  border: 1px solid var(--ink-12); border-radius: 2px; padding: .9rem 1rem;
  transition: border-color .25s, box-shadow .25s;
}
.field input:hover, .field select:hover { border-color: var(--ink); }
.field select {
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='7' viewBox='0 0 10 7'><path d='m1 1 4 4 4-4' fill='none' stroke='%231a1a1a' stroke-width='1.5'/></svg>");
  background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.6rem;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px var(--ink-12); }
.field.invalid input, .field.invalid select { border-color: #c00; }
.error { display: block; color: #c00; font-size: .85rem; margin-top: .35rem; }
.error:empty { display: none; }
.checkbox { display: flex; gap: .75rem; align-items: flex-start; font-weight: 400 !important; font-size: .88rem !important; line-height: 1.45; cursor: pointer; color: var(--ink-70); }
.checkbox input { margin: .2rem 0 0; width: 18px; height: 18px; flex: none; accent-color: var(--ink); }
.field-consent { margin: 1.5rem 0; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin: 1rem 0 0; font-size: .95rem; }
.form-status:empty { display: none; }
.form-status.err { color: #c00; }
.form-success { text-align: center; padding: 2rem 0; animation: pop .6s var(--ease); }
.form-success h3 { margin-bottom: .6rem; }
@keyframes pop { from { opacity: 0; transform: scale(.96); } }

/* Footer – schwarz wie at.amc.info */
.site-footer { background: var(--ink); color: var(--white); padding: clamp(3rem, 6vw, 5rem) 0 0; font-size: .92rem; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.2fr; gap: 2.5rem; padding-bottom: 3rem; }
.footer-brand img { height: 56px; width: auto; margin-bottom: 1.2rem; }
.footer-brand p { color: rgba(255,255,255,.7); max-width: 22em; }
.footer-col h4 { font-size: .95rem; margin-bottom: 1rem; }
.footer-col a { display: block; text-decoration: none; color: rgba(255,255,255,.75); padding: .25rem 0; transition: color .25s; }
.footer-col a:hover { color: var(--white); }
.footer-col p { color: rgba(255,255,255,.75); margin-bottom: .6rem; line-height: 1.55; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 1.4rem 0; color: rgba(255,255,255,.6); font-size: .85rem; }
.footer-bottom p { margin: 0; }

/* Rechtsseiten */
.legal { padding: clamp(2.5rem, 6vw, 5rem) 0; }
.legal-inner { max-width: 760px; }
.legal h1 { margin-bottom: 1.5rem; font-size: clamp(2.2rem, 4vw, 3.2rem); }
.legal h2 { font-size: 1.3rem; margin: 2.2rem 0 .6rem; }
.legal h3 { font-size: 1.05rem; margin: 1.6rem 0 .4rem; }
.legal p, .legal li { color: var(--ink-70); }
.legal ul { padding-left: 1.2rem; }
.legal a { word-break: break-word; }
.back-link { display: inline-block; margin-bottom: 2rem; font-size: .9rem; }


/* Zwischen-CTAs */
.cta-row { display: flex; align-items: center; justify-content: center; gap: 1.2rem; flex-wrap: wrap; margin-top: clamp(2.5rem, 5vw, 4rem); }
.cta-row--left { justify-content: flex-start; margin-top: 2.5rem; }
.cta-note { font-size: .85rem; letter-spacing: .04em; color: var(--ink-70); }
.cta-inline { display: inline-block; margin-top: .6rem; font-size: .95rem; font-weight: 500; color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--ink); padding-bottom: .1rem; transition: opacity .25s; }
.cta-inline:hover { opacity: .65; }

/* Sticky-Leiste (nur mobil, nach dem Hero) */
.sticky-cta { position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; display: none; align-items: center; justify-content: space-between; gap: 1rem; padding: .7rem 1.25rem calc(.7rem + env(safe-area-inset-bottom)); background: rgba(250,250,250,.94); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-top: 1px solid var(--ink-12); font-size: .85rem; color: var(--ink-70); transform: translateY(110%); transition: transform .4s var(--ease); }
.sticky-cta.is-visible { transform: none; }
@media (max-width: 900px) { .sticky-cta { display: flex; } }

/* Reveal-Animationen */
[data-reveal] { opacity: 0; transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0s); }
[data-reveal="up"] { transform: translateY(24px); }
[data-reveal="zoom"] { transform: scale(.96); }
[data-reveal].in { opacity: 1; transform: none; }
.split .w { display: inline-block; overflow: hidden; vertical-align: bottom; padding-bottom: .08em; margin-bottom: -.08em; }
.split .w > span { display: inline-block; transform: translateY(110%); transition: transform .9s var(--ease); transition-delay: calc(var(--i) * .045s); }
.split.in .w > span { transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal], .split .w > span, .signup-form .field, .signup-form .btn { opacity: 1 !important; transform: none !important; transition: none !important; }
  .marquee-track, .hero-content > * { animation: none; }
  .reason { opacity: 1; }
  .hero-bg, .cta-bg { inset: 0; transform: none !important; }
}

/* Responsive */
@media (max-width: 900px) {
  :root { --header-h: 64px; }
  .header-inner { grid-template-columns: 1fr auto; }
  .header-nav { display: none; }
  .hero { min-height: max(520px, 80svh); }
  .hero-actions .btn { width: 100%; max-width: 320px; }
  .features { grid-template-columns: 1fr; gap: 2.5rem; }
  .hscroll-sticky { position: static; height: auto; padding: clamp(3rem, 7vw, 6rem) 0 2rem; overflow: visible; }
  .hscroll-track { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem 1rem; width: auto; padding: 0 1.25rem; transform: none !important; }
  .event-card { width: auto; }
  .event-card figcaption { font-size: .8rem; margin-top: .45rem; }
  .reasons-grid, .signup-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .reasons-media { position: static; }
  /* Mobil: nur das erste Bild, im normalen Fluss – keine absolute Positionierung (Safari) */
  .stack { aspect-ratio: auto; }
  .stack .img-frame { position: relative; inset: auto; height: auto; aspect-ratio: 16 / 10; opacity: 1; transform: none; }
  .stack .img-frame:not(:first-child) { display: none; }
  .reason { opacity: 1; }
  .stats-grid { grid-template-columns: 1fr; gap: 2rem; }
  .stat { border-left: 0; border-top: 1px solid var(--ink-12); padding-top: 2rem; }
  .stat:first-child { border-top: 0; padding-top: 0; }
  .cta-band { min-height: 0; }
  .signup-copy { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .logo img { height: 36px; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}