/* traufu.com: schlicht, folgt der Systemeinstellung (hell weiß / dunkel schwarz), ein blauer Akzent, Systemschriften (keine externen Anfragen) */
:root {
  --bg: #ffffff; --panel: #f4f5f7; --panel2: #eaecf0; --line: #e3e5ea; --text: #14161a; --dim: #5d6370;
  --accent: #0090f0; --accent-ink: #ffffff; --accent-soft: rgba(0,144,240,.1);
  --ok: #12805c; --ok-soft: rgba(18,128,92,.12); --err: #c62828; --err-soft: rgba(198,40,40,.1); --warn-soft: rgba(230,160,0,.14);
  --shadow: 0 1px 2px rgba(20,22,26,.06), 0 8px 28px rgba(20,22,26,.06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000; --panel: #131416; --panel2: #1d1f23; --line: #26282d; --text: #f2f3f5; --dim: #9aa0ab;
    --accent: #4db3ff; --accent-ink: #00121f; --accent-soft: rgba(77,179,255,.14);
    --ok: #4cc9a0; --ok-soft: rgba(76,201,160,.14); --err: #ff7b7b; --err-soft: rgba(255,123,123,.12); --warn-soft: rgba(255,200,80,.14);
    --shadow: none; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); min-height: 100vh; display: flex; flex-direction: column;
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Noto Sans CJK JP", "Noto Sans CJK KR", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.01em; margin: 0 0 .5em; }
img { max-width: 100%; }
.small { font-size: .85rem; } .dim { color: var(--dim); } .center { text-align: center; }
[hidden] { display: none !important; }
/* Inhalt erst zeigen, wenn Texte und Wartungsstatus geladen sind (site.js setzt .ready); ohne JavaScript sofort */
html:not(.ready) main { visibility: hidden; }

/* Kopf */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; gap: 20px; max-width: 1120px; margin: 0 auto; padding: 10px 24px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 1.2rem; }
.brand:hover { text-decoration: none; }
.brand img { border-radius: 9px; }
.beta { font-style: normal; font-weight: 600; font-size: .7rem; letter-spacing: .03em; padding: 1px 8px; border-radius: 999px; background: var(--panel2); color: var(--dim); }
.top nav { display: flex; gap: 4px; margin-left: 12px; }
.top nav a { color: var(--dim); padding: 6px 12px; border-radius: 999px; font-weight: 500; }
.top nav a:hover, .top nav a.on { color: var(--text); background: var(--panel); text-decoration: none; }
.top-end { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.menu-btn { display: none; }
select, input, textarea { font: inherit; color: var(--text); }
#lang { background: var(--panel); border: 0; border-radius: 999px; padding: 7px 12px; font-size: .9rem; cursor: pointer; }

/* Knöpfe */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 20px; border-radius: 999px; border: 0; background: var(--panel2); color: var(--text); font: inherit; font-weight: 600; cursor: pointer; transition: filter .15s, transform .05s; }
.btn:hover { text-decoration: none; filter: brightness(.96); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn.ghost { background: transparent; border: 1px solid var(--line); }
.btn.danger { background: var(--err-soft); color: var(--err); }
.btn.small { padding: 6px 14px; font-size: .88rem; }
.btn.big { padding: 14px 28px; font-size: 1.05rem; }
.btn[disabled], .btn.disabled { opacity: .5; pointer-events: none; }

/* Seiten */
main { flex: 1; width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px; }
section { padding: 56px 0; }
.eyebrow { color: var(--accent); font-weight: 700; font-size: .85rem; letter-spacing: .06em; text-transform: uppercase; margin: 0 0 8px; }
.h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }

.hero { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; padding: 72px 0 48px; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); margin-bottom: 18px; }
.lead { font-size: 1.2rem; color: var(--dim); margin: 0 0 28px; max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 14px; }
.hero-art { position: relative; }
.hero-art img { width: 100%; max-width: 420px; aspect-ratio: 1; object-fit: cover; border-radius: 32px; display: block; margin: 0 auto; box-shadow: var(--shadow); background: var(--panel); }

.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--panel); border-radius: 20px; padding: 22px 24px; }
.card.line { background: transparent; border: 1px solid var(--line); }
.card h3 { font-size: 1.1rem; margin-bottom: 6px; }
.card p { margin: 0; color: var(--dim); }
.card.sel { box-shadow: inset 0 0 0 2px var(--accent); }

.gallery { padding: 8px 0 24px; }
/* Endlos laufendes Band von rechts nach links; abgeschnitten an den Rändern des Layouts, die Kanten blenden weich aus */
.marquee { overflow: hidden; border-radius: 24px; -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent); mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent); }
.track { display: flex; width: max-content; animation: marquee 50s linear infinite; }
.marquee:hover .track { animation-play-state: paused; }
.gallery video { flex: none; width: 220px; height: 220px; margin-right: 12px; object-fit: cover; border-radius: 20px; background: var(--panel); display: block; }
@keyframes marquee { to { transform: translateX(-50%); } }

.devices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.device { display: flex; flex-direction: column; gap: 10px; }
.device .ico { width: 44px; height: 44px; border-radius: 14px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; }
.device .btn { margin-top: auto; align-self: flex-start; }
.device p { flex: 1; }

.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.steps li { counter-increment: s; position: relative; padding-left: 52px; min-height: 38px; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 36px; height: 36px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; font-weight: 700; }
.steps b { display: block; }
.steps span { color: var(--dim); }

.faq details { background: var(--panel); border-radius: 16px; padding: 16px 20px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--dim); margin: 10px 0 0; }

.cta-band { background: var(--panel); border-radius: 28px; padding: 40px; text-align: center; margin-bottom: 56px; }
.cta-band .cta { justify-content: center; }

/* Fuß */
footer { border-top: 1px solid var(--line); margin-top: 24px; }
.foot-in { max-width: 1120px; margin: 0 auto; padding: 28px 24px; display: flex; flex-wrap: wrap; gap: 8px 22px; color: var(--dim); font-size: .9rem; }
.foot-in span { margin-right: auto; }
.foot-in a { color: var(--dim); }

/* Formulare (Anmeldung, Konto) */
.auth { max-width: 420px; margin: 0 auto; padding: 56px 0 72px; }
.auth h1 { font-size: 1.9rem; }
.auth .sub { color: var(--dim); margin: -4px 0 24px; }
form.stack { display: grid; gap: 14px; }
label.f { display: grid; gap: 6px; font-weight: 600; font-size: .92rem; }
label.f span.hint { font-weight: 400; color: var(--dim); font-size: .85rem; }
input.in, select.in, textarea.in { width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid transparent; background: var(--panel); outline: none; }
input.in:focus, select.in:focus, textarea.in:focus { border-color: var(--accent); background: var(--bg); box-shadow: 0 0 0 3px var(--accent-soft); }
textarea.in { resize: vertical; min-height: 84px; }
.check { display: flex; align-items: flex-start; gap: 10px; font-size: .92rem; }
.check input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--accent); }
.msg { padding: 12px 14px; border-radius: 12px; font-size: .94rem; }
.msg.err { background: var(--err-soft); color: var(--err); }
.msg.ok { background: var(--ok-soft); color: var(--ok); }
.msg.info { background: var(--accent-soft); }
.msg.warn { background: var(--warn-soft); }
.row-links { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: .92rem; margin-top: 18px; }
#ts { min-height: 65px; }

/* Konto */
.acc { display: grid; grid-template-columns: 220px 1fr; gap: 36px; padding: 40px 0 72px; align-items: start; }
.side { position: sticky; top: 76px; display: grid; gap: 2px; }
.side a { padding: 9px 14px; border-radius: 12px; color: var(--dim); font-weight: 500; }
.side a:hover { background: var(--panel); text-decoration: none; color: var(--text); }
.side a.on { background: var(--accent-soft); color: var(--accent); }
.acc h1 { font-size: 1.7rem; }
.acc h2 { font-size: 1.15rem; margin: 0 0 4px; }
.block { background: var(--panel); border-radius: 20px; padding: 22px 24px; margin-bottom: 16px; }
.block > p.dim { margin: 0 0 14px; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 22px; margin: 0; }
.kv dt { color: var(--dim); } .kv dd { margin: 0; word-break: break-all; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .8rem; font-weight: 600; background: var(--panel2); }
.badge.ok { background: var(--ok-soft); color: var(--ok); } .badge.warn { background: var(--warn-soft); }
.set-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 12px 0; border-top: 1px solid var(--line); }
.set-row:first-of-type { border-top: 0; }
.set-row .t { font-weight: 600; } .set-row .d { color: var(--dim); font-size: .88rem; }
.set-row select, .set-row input[type=range] { min-width: 160px; }
.switch { position: relative; width: 46px; height: 28px; flex: none; }
.switch input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; z-index: 1; }
.switch i { position: absolute; inset: 0; background: var(--panel2); border-radius: 999px; transition: background .15s; }
.switch i::after { content: ""; position: absolute; left: 3px; top: 3px; width: 22px; height: 22px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.3); transition: transform .15s; }
.switch input:checked + i { background: var(--accent); } .switch input:checked + i::after { transform: translateX(18px); }
.list { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.list li { display: flex; align-items: center; gap: 12px; background: var(--bg); border-radius: 12px; padding: 10px 14px; }
.list li .grow { flex: 1; min-width: 0; word-break: break-word; }
.chat-log { display: grid; gap: 6px; max-height: 520px; overflow: auto; }
.bubble { max-width: 80%; padding: 8px 14px; border-radius: 16px; background: var(--bg); }
.bubble.u { justify-self: end; background: var(--accent); color: var(--accent-ink); }
.bubble time { display: block; font-size: .72rem; opacity: .65; }
.savebar { position: sticky; bottom: 12px; display: flex; gap: 12px; align-items: center; justify-content: flex-end; background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 8px 8px 8px 20px; box-shadow: var(--shadow); }
.skeleton { color: var(--dim); padding: 40px 0; }

/* Rechtstexte */
.legal { max-width: 780px; margin: 0 auto; padding: 48px 0 72px; }
.legal h1 { font-size: 2rem; } .legal h2 { font-size: 1.25rem; margin-top: 32px; } .legal h3 { font-size: 1.05rem; margin-top: 22px; }
.legal p, .legal li { color: var(--text); }

.notfound { text-align: center; padding: 120px 0; }
.notfound h1 { font-size: 4rem; color: var(--accent); }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 32px; gap: 28px; }
  .hero-art { order: -1; } .hero-art img { max-width: 260px; }
  .grid3, .devices { grid-template-columns: 1fr; }
  .gallery video { width: 160px; height: 160px; }
  .acc { grid-template-columns: 1fr; gap: 12px; padding-top: 20px; }
  .side { position: static; display: flex; overflow-x: auto; gap: 4px; padding-bottom: 6px; }
  .side a { white-space: nowrap; }
  .top-in { padding: 8px 16px; gap: 12px; } main { padding: 0 16px; } .foot-in { padding: 24px 16px; }
  .menu-btn { display: inline-flex; background: var(--panel); border: 0; width: 38px; height: 38px; border-radius: 50%; align-items: center; justify-content: center; color: var(--text); cursor: pointer; }
  .top nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--line); flex-direction: column; padding: 8px 16px 14px; margin: 0; }
  .top nav.open { display: flex; }
  .top-end { gap: 8px; }
  .cta-band { padding: 28px 20px; }
  .set-row { flex-wrap: wrap; }
}
@media (max-width: 560px) {
  .brand span { display: none; }
  #acct { display: flex; gap: 6px; white-space: nowrap; }
  #acct .btn.small { padding: 6px 12px; }
  #lang { padding: 7px 8px; max-width: 110px; }
}
@media (prefers-reduced-motion: reduce) { .track { animation: none; width: auto; flex-wrap: wrap; } .gallery video.dup { display: none; } * { transition: none !important; scroll-behavior: auto !important; } }