/* KeepBot - keepbot.de
   Farben: KeepBot-Palette, siehe design/design.md §2 (hell/dunkel). */

@font-face { font-family: 'Unbounded'; src: url('fonts/unbounded-latin-wght-normal.woff2') format('woff2'); font-weight: 200 900; font-display: swap; }
@font-face { font-family: 'Figtree'; src: url('fonts/figtree-latin-wght-normal.woff2') format('woff2'); font-weight: 300 900; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('fonts/jetbrains-mono-latin-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; }

/* ---------- Tokens: hell ---------- */
:root {
  color-scheme: light;
  --brand-navy: #0b1b45;
  --brand-sky: #1597f0;
  --twitch: #9146ff;
  --discord: #5865f2;

  --bg: #eef5fc;
  --surface: #ffffff;
  --surface-2: #f5f9fe;
  --surface-3: #e3edf9;
  --border: #cfdcef;
  --border-soft: #e1eaf6;
  --text: #0b1b45;
  --text-muted: #4a5a85;
  --text-dim: #5f6f96;
  --accent: #0a6fc2;
  --accent-hover: #085da3;
  --accent-weak: #1597f01f;
  --on-accent: #ffffff;
  --err: #c8303b;
  --premium: #7a5000;
  --premium-bg: #fdf1d0;
  --premium-border: #e9cf8a;

  --btn-bg: var(--brand-navy);
  --btn-bg-hover: #13296a;
  --btn-fg: #ffffff;
  --foot-bg: #0b1b45;
  --shadow: 0 1px 2px rgb(11 27 69 / .06), 0 18px 40px -24px rgb(11 27 69 / .35);
  --u-a: #0e7a5e; --u-b: #b33a0a; --u-c: #6d2fd6;

  --display: 'Unbounded', system-ui, sans-serif;
  --body: 'Figtree', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --wrap: 1120px;
  --radius: 14px;
}

/* ---------- Tokens: dunkel ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #070f26; --surface: #0d1834; --surface-2: #13213f; --surface-3: #1a2b4f;
    --border: #243559; --border-soft: #1a2849;
    --text: #e9f0fb; --text-muted: #9fb0d6; --text-dim: #7486ad;
    --accent: #3aa9ff; --accent-hover: #66bdff; --accent-weak: #3aa9ff24; --on-accent: #061634;
    --err: #ff6b73; --premium: #f3c35a; --premium-bg: #2e2408; --premium-border: #5a4712;
    --btn-bg: #3aa9ff; --btn-bg-hover: #66bdff; --btn-fg: #061634;
    --foot-bg: #040a1c;
    --shadow: 0 1px 2px #0008, 0 18px 40px -24px #000c;
    --u-a: #4fd3a8; --u-b: #ff9a62; --u-c: #b794ff;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #070f26; --surface: #0d1834; --surface-2: #13213f; --surface-3: #1a2b4f;
  --border: #243559; --border-soft: #1a2849;
  --text: #e9f0fb; --text-muted: #9fb0d6; --text-dim: #7486ad;
  --accent: #3aa9ff; --accent-hover: #66bdff; --accent-weak: #3aa9ff24; --on-accent: #061634;
  --err: #ff6b73; --premium: #f3c35a; --premium-bg: #2e2408; --premium-border: #5a4712;
  --btn-bg: #3aa9ff; --btn-bg-hover: #66bdff; --btn-fg: #061634;
  --foot-bg: #040a1c;
  --shadow: 0 1px 2px #0008, 0 18px 40px -24px #000c;
  --u-a: #4fd3a8; --u-b: #ff9a62; --u-c: #b794ff;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 17px/1.6 var(--body);
  transition: background-color .25s ease, color .25s ease;
}
img { max-width: 100%; height: auto; display: block; }
:focus-visible { outline: 3px solid var(--brand-sky); outline-offset: 3px; border-radius: 6px; }

/* Links: Unterstrich wächst beim Hover von links nach rechts. */
a { color: var(--accent); text-decoration: none; }
.lnk, .legal a, .intro a, .foot a, .top nav a:not(.btn) {
  background-image: linear-gradient(currentColor, currentColor);
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0% 2px;
  transition: background-size .25s ease, color .2s ease;
  padding-bottom: 2px;
}
.legal a { background-size: 100% 1px; }
.lnk:hover, .legal a:hover, .intro a:hover, .foot a:hover, .top nav a:not(.btn):hover { background-size: 100% 2px; }
a:hover { color: var(--accent-hover); }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

/* ---------- Kopfzeile ---------- */
.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; transition: border-color .2s ease, background-color .25s ease; }
.top.scrolled { border-bottom-color: var(--border); }
.top .wrap { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font: 700 19px/1 var(--display); letter-spacing: -0.02em; background: none; }
.brand:hover { color: var(--text); }
.brand img { width: 34px; height: 34px; transition: transform .3s ease; }
.brand:hover img { transform: rotate(-6deg) scale(1.06); }
.brand b { color: var(--brand-sky); font-weight: 700; }
.top nav { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.top nav a:not(.btn) { font-weight: 600; font-size: 15px; color: var(--text); }
.top nav a:not(.btn):hover { color: var(--accent); }

.theme-toggle { width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--border); background: var(--surface); color: var(--text); display: inline-grid; place-items: center; cursor: pointer; transition: transform .2s ease, background-color .2s ease, border-color .2s ease; }
.theme-toggle:hover { transform: rotate(-15deg); border-color: var(--brand-sky); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .moon { display: block; }
}

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 20px; border-radius: 999px; font: 600 15px/1 var(--body); text-decoration: none; border: 2px solid var(--text); color: var(--text); background: transparent; cursor: pointer; transition: transform .15s ease, background-color .15s ease, color .15s ease, border-color .15s ease, box-shadow .15s ease; }
.btn:hover { transform: translateY(-2px); color: var(--text); background: var(--surface); box-shadow: var(--shadow); }
.btn-primary { background: var(--btn-bg); border-color: var(--btn-bg); color: var(--btn-fg); }
.btn-primary:hover { background: var(--btn-bg-hover); border-color: var(--btn-bg-hover); color: var(--btn-fg); }
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }
.top .btn { padding: 10px 16px; font-size: 14px; }

/* ---------- Hero ---------- */
.hero { padding: 64px 0 88px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.hero h1 { font: 700 clamp(34px, 5vw, 58px)/1.04 var(--display); letter-spacing: -0.035em; margin: 0 0 22px; }
.hero h1 em { font-style: normal; color: var(--brand-sky); }
.hero p.lead { font-size: 19px; color: var(--text-muted); margin: 0 0 30px; max-width: 34em; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .fine { margin-top: 18px; font-size: 14px; color: var(--text-muted); }

/* ---------- Signatur: ein Bann, zwei Plattformen ---------- */
.relay { position: relative; display: flex; flex-direction: column; gap: 18px; }
.pane { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.pane header { display: flex; align-items: center; gap: 10px; padding: 11px 16px; border-bottom: 1px solid var(--border); font: 600 13px/1 var(--body); color: var(--text-muted); }
.pane header .tag { font: 700 11px/1 var(--display); letter-spacing: .02em; padding: 5px 8px; border-radius: 6px; color: #fff; }
.tag.twitch { background: var(--twitch); }
.tag.discord { background: var(--discord); }
.pane ol { list-style: none; margin: 0; padding: 12px 16px 14px; font: 400 13.5px/1.55 var(--mono); min-height: 138px; }
.pane li { padding: 3px 0; }
.u.a { color: var(--u-a); } .u.b { color: var(--u-b); } .u.c { color: var(--u-c); } .u.s { color: var(--err); }
.pane li.spam.struck .t { text-decoration: line-through; text-decoration-color: var(--err); text-decoration-thickness: 2px; color: var(--text-dim); }
.pane li.bot { color: var(--text); background: var(--accent-weak); margin: 4px -16px 0; padding: 6px 16px; }
.pane li.bot::before { content: ''; display: inline-block; width: 15px; height: 15px; margin: 0 8px -2px 0; background: url('logo-192.png') center/contain no-repeat; }

.bridge { position: relative; align-self: center; margin: -24px 0; z-index: 2; display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; background: var(--btn-bg); color: var(--btn-fg); font: 600 12.5px/1 var(--body); white-space: nowrap; box-shadow: 0 8px 20px -8px rgb(11 27 69 / .6); }
.bridge svg { width: 14px; height: 14px; }

/* Ablauf der Szenarien (site.js). Ohne JS oder bei reduzierter Bewegung
   bleibt das erste Szenario im Endzustand stehen. */
.pane li, .bridge { transition: opacity .35s ease, transform .35s ease; }
.pane li.pending { opacity: 0; transform: translateY(6px); }
.pane li.spam .t { transition: text-decoration-color .3s ease, color .3s ease; text-decoration: line-through; text-decoration-color: transparent; text-decoration-thickness: 2px; }
.bridge.pending { opacity: 0; transform: scale(.9); }
.bridge svg { transition: transform .3s ease; }
.bridge.up svg { transform: rotate(180deg); }
.pane ol, .pane .where { transition: opacity .35s ease; }
.relay.swap .pane ol, .relay.swap .pane .where { opacity: 0; }

/* ---------- Abschnitte ---------- */
section.block { padding: 88px 0; border-top: 1px solid var(--border); }
.eyebrow { font: 700 12px/1 var(--display); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin: 0 0 14px; }
h2 { font: 700 clamp(26px, 3.2vw, 38px)/1.12 var(--display); letter-spacing: -0.03em; margin: 0 0 18px; }
.intro { color: var(--text-muted); max-width: 40em; margin: 0 0 44px; }

.platforms { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.platform { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 26px 20px; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.platform:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--brand-sky) 45%, var(--border)); }
.platform h3 { display: flex; align-items: center; gap: 10px; font: 700 18px/1.2 var(--display); letter-spacing: -0.02em; margin: 0 0 16px; }
.platform h3 .dot { width: 10px; height: 10px; border-radius: 50%; }
.platform ul { list-style: none; margin: 0; padding: 0; }
.platform li { padding: 11px 0; border-top: 1px solid var(--border-soft); }
.platform li:first-child { border-top: 0; padding-top: 0; }
.platform li strong { display: block; font-weight: 700; }
.platform li span { color: var(--text-muted); font-size: 15px; }
/* Premium-Badge: identisch zur App (frontend/style.css .badge-premium) */
.badge-premium { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 999px; font: 600 11px/1.5 var(--body); color: var(--premium); background: var(--premium-bg); border: 1px solid var(--premium-border); vertical-align: 1px; white-space: nowrap; }

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: s; }
.steps li { counter-increment: s; position: relative; padding: 24px 24px 24px 76px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.steps li::before { content: counter(s); position: absolute; left: 22px; top: 22px; width: 38px; height: 38px; border-radius: 50%; background: var(--btn-bg); color: var(--btn-fg); display: grid; place-items: center; font: 700 16px/1 var(--display); }
.steps strong { display: block; margin-bottom: 4px; }
.steps span { color: var(--text-muted); font-size: 15px; }

.cta { text-align: center; }
.cta .wrap { display: flex; flex-direction: column; align-items: center; }
.cta img { width: 88px; margin-bottom: 20px; }

/* ---------- Rechtstexte ---------- */
.legal { padding: 48px 0 88px; }
.legal .wrap { max-width: 800px; }
.legal h1 { font: 700 clamp(30px, 4vw, 42px)/1.1 var(--display); letter-spacing: -0.03em; margin: 0 0 8px; }
.legal .updated { color: var(--text-muted); font-size: 14px; margin: 0 0 32px; }
.legal h2 { font-size: 22px; margin: 40px 0 12px; }
.legal h3 { font: 700 17px/1.3 var(--body); margin: 26px 0 8px; }
.legal ul { padding-left: 20px; }
.legal li { margin: 6px 0; }
.legal code { font: 400 14px var(--mono); background: var(--accent-weak); padding: 1px 5px; border-radius: 4px; }
.box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 22px; }

.mail-reveal, .tel-reveal { font: inherit; color: var(--accent); background: none; border: 0; padding: 0; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }

/* ---------- Nach oben ---------- */
.to-top { position: fixed; right: 20px; bottom: 20px; z-index: 20; width: 46px; height: 46px; border-radius: 50%; border: 0; background: var(--btn-bg); color: var(--btn-fg); display: grid; place-items: center; cursor: pointer; box-shadow: var(--shadow); opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .25s ease, transform .25s ease, background-color .15s ease; }
.to-top.show { opacity: 1; transform: none; pointer-events: auto; }
.to-top:hover { background: var(--btn-bg-hover); transform: translateY(-3px); }
.to-top svg { width: 20px; height: 20px; }

/* ---------- Fußzeile ---------- */
.foot { background: var(--foot-bg); color: #c9d6f2; padding: 56px 0 32px; font-size: 15px; }
.foot a { color: #fff; }
.foot a:hover { color: #7cc4fb; }
.foot .grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
.foot .brand { color: #fff; }
.foot h4 { font: 700 12px/1 var(--display); letter-spacing: .08em; text-transform: uppercase; color: #7cc4fb; margin: 0 0 14px; }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin: 8px 0; }
.foot .bottom { margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .12); display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; font-size: 13px; color: #9fb0d6; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 44px; }
  .platforms, .steps { grid-template-columns: 1fr; }
  .foot .grid { grid-template-columns: 1fr 1fr; }
  .foot .grid > :first-child { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .top .wrap { gap: 12px; }
  .top nav { gap: 10px; }
  .top nav a:not(.btn) { display: none; }
  .hero { padding: 36px 0 64px; }
  section.block { padding: 64px 0; }
  .bridge { font-size: 11.5px; padding: 7px 12px; }
  .pane ol { font-size: 12.5px; }
  .to-top { right: 16px; bottom: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0s !important; }
}