/* Billmorph: ruhige, vertrauenswürdige B2B-Seite. Systemschriften (keine externen Fonts, DSGVO). */
:root {
  --bg: #F5F7F8;
  --surface: #FFFFFF;
  --ink: #102030;
  --muted: #4E5D6B;
  --line: #D6DDE3;
  --accent: #0A7A55;      /* „gültig“ */
  --accent-ink: #FFFFFF;
  --accent-soft: #E1F2EA;
  --deadline: #9A4A08;
  --deadline-soft: #FBEBDD;
  --code: #E9EEF2;
  --radius: 12px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0C141C; --surface: #121D27; --ink: #E6ECF1; --muted: #9AA9B6; --line: #253441;
    --accent: #3CC48F; --accent-ink: #0C141C; --accent-soft: #123327;
    --deadline: #F2A65A; --deadline-soft: #33230F; --code: #1A2732;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 var(--font); }
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.wrap { max-width: 1080px; margin: 0 auto; padding-left: max(20px, env(safe-area-inset-left)); padding-right: max(20px, env(safe-area-inset-right)); }
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.015em; text-wrap: balance; }
h1 { font-size: clamp(34px, 5.4vw, 58px); font-weight: 800; }
h2 { font-size: clamp(26px, 3.4vw, 36px); font-weight: 750; }
h3 { font-size: 19px; font-weight: 700; }
p { margin: 0; }
.muted { color: var(--muted); }

/* header */
.top { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px 24px; padding-block: 18px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; text-decoration: none; letter-spacing: -0.02em; }
.logo-mark { width: 30px; height: 30px; border-radius: 8px; background: var(--ink); color: var(--bg); display: grid; place-items: center; font: 700 13px var(--mono); }
.lang { font-size: 15px; color: var(--muted); text-decoration: none; border-bottom: 1px solid var(--line); }

/* hero */
.hero { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: 48px; align-items: center; padding-block: 40px 64px; }
.hero-text { display: grid; gap: 20px; }
.lede { font-size: 20px; color: var(--muted); max-width: 34em; }
.morph { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 22px; display: grid; gap: 14px; }
.doc { border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; display: grid; gap: 6px; font-size: 14px; }
.doc .tag { font: 600 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.doc.out { border-color: var(--accent); background: var(--accent-soft); }
.doc.out .tag { color: var(--accent); }
.doc code { font: 12.5px/1.5 var(--mono); background: var(--code); padding: 8px 10px; border-radius: 6px; display: block; overflow-x: auto; white-space: pre; color: var(--ink); }
.arrow { text-align: center; font: 600 13px var(--mono); color: var(--muted); }
.check { color: var(--accent); font-weight: 700; }

/* waitlist form */
.signup { display: grid; gap: 10px; max-width: 520px; }
.signup-row { display: flex; gap: 10px; flex-wrap: wrap; }
.signup input[type=email], .signup select { flex: 1 1 240px; min-width: 0; font: inherit; padding: 13px 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); min-height: 50px; }
.signup select { flex: 1 1 300px; }
.btn { font: 700 17px var(--font); background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 10px; padding: 13px 22px; min-height: 50px; cursor: pointer; }
.btn:hover { filter: brightness(1.06); }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--muted); }
.consent input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--accent); flex: none; }
.form-msg { font-size: 15px; min-height: 1.4em; }
.form-msg.ok { color: var(--accent); font-weight: 600; }
.form-msg.err { color: var(--deadline); font-weight: 600; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* sections */
section { padding-block: 56px; border-top: 1px solid var(--line); }
.section-head { display: grid; gap: 10px; margin-bottom: 28px; max-width: 46em; }
.timeline { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.tl { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; display: grid; gap: 6px; align-content: start; }
.tl .date { font: 700 14px var(--mono); color: var(--deadline); background: var(--deadline-soft); padding: 3px 8px; border-radius: 6px; justify-self: start; }
.tl.now .date { color: var(--accent); background: var(--accent-soft); }
.source { font-size: 13px; color: var(--muted); margin-top: 12px; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; counter-reset: s; }
.step { display: grid; gap: 8px; align-content: start; }
.step::before { counter-increment: s; content: counter(s); width: 34px; height: 34px; border-radius: 50%; background: var(--ink); color: var(--bg); display: grid; place-items: center; font-weight: 800; }
.features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 32px; }
.feature { display: grid; gap: 4px; padding-left: 28px; position: relative; }
.feature::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--accent); font-weight: 800; }
.viewer { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: grid; gap: 8px; max-width: 46em; }
.viewer .btn { justify-self: start; margin-top: 6px; }
.prices { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.price { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; display: grid; gap: 8px; align-content: start; }
.price .tag { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .02em; color: var(--accent-ink); background: var(--accent); border-radius: 999px; padding: 2px 9px; margin-left: 6px; vertical-align: 3px; }
.price { transition: border-color .15s; }
.price:hover { border-color: var(--accent); }
.price { grid-template-rows: auto auto 1fr auto; }
.price-actions { display: grid; gap: 8px; margin-top: 6px; }
.price-actions .btn { min-height: 44px; padding: 10px 14px; font-size: 16px; }
.price-note { margin-top: 14px; font-size: 15px; }
.price .amount { font-size: 30px; font-weight: 800; letter-spacing: -0.02em; }
.price .amount small { font-size: 15px; font-weight: 500; color: var(--muted); }
.faq { display: grid; gap: 0; max-width: 52em; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding-block: 16px; }
.faq summary { cursor: pointer; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::after { content: "+"; color: var(--muted); font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin-top: 10px; color: var(--muted); }
.cta-end { display: grid; gap: 16px; justify-items: start; }
footer { border-top: 1px solid var(--line); padding-block: 28px 40px; font-size: 14px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 8px 20px; }

/* legal pages */
.legal { max-width: 46em; padding-block: 24px 64px; display: grid; gap: 16px; }
.legal h2 { font-size: 22px; margin-top: 12px; }
.todo { background: var(--deadline-soft); color: var(--deadline); padding: 2px 6px; border-radius: 4px; font-family: var(--mono); font-size: 14px; }

@media (max-width: 900px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 32px; padding-block: 20px 48px; }
  .prices { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .timeline, .steps, .features, .prices { grid-template-columns: minmax(0, 1fr); }
  body { font-size: 16px; }
  .lede { font-size: 18px; }
}
@media (prefers-reduced-motion: no-preference) { .btn { transition: filter .15s; } }

/* Haupt-Aufruf zur Anwendung über dem Formular; das Neuigkeiten-Formular tritt zurück */
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; }
.cta-row .muted { font-size: 15px; max-width: 26em; }
.btn { text-decoration: none; display: inline-flex; align-items: center; justify-content: center; }
.btn-quiet { background: transparent; color: var(--ink); border: 1px solid var(--line); }

/* Ratgeber- und Fehlercode-Seiten */
.top-links { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 15px; }
.top-links a { text-decoration: none; border-bottom: 1px solid var(--line); white-space: nowrap; }
.article { max-width: 760px; display: grid; gap: 26px; padding-block: 12px 56px; }
.article h1 { font-size: clamp(30px, 4.6vw, 46px); }
.article h2 { font-size: clamp(22px, 2.6vw, 27px); margin-bottom: 10px; }
.article section { display: grid; gap: 10px; padding-block: 0; border-top: 0; }
.article ul, .article ol { margin: 0; padding-left: 1.3em; display: grid; gap: 6px; }
.article code { font: 0.88em var(--mono); background: var(--code); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
.crumbs { font-size: 14px; color: var(--muted); }
.crumbs a { color: inherit; }
.cta-box { background: var(--accent-soft); border-radius: var(--radius); padding: 18px 20px; display: grid; gap: 12px; justify-items: start; }
.rule { margin: 0; background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--ink); border-radius: 8px; padding: 12px 16px; font-size: 15px; }
.rule-code { font: 700 13px var(--mono); }
.badge-line { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.sev { font-size: 13px; font-weight: 700; padding: 2px 10px; border-radius: 999px; }
.sev-error { background: #B42318; color: #FFFFFF; }
.sev-warning { background: var(--deadline-soft); color: var(--deadline); }
.table-scroll { overflow-x: auto; }
.fields { width: 100%; border-collapse: collapse; font-size: 14px; }
.fields th, .fields td { text-align: left; vertical-align: top; padding: 8px; border-bottom: 1px solid var(--line); }
.fields th { color: var(--muted); font-size: 13px; }
.code-list { list-style: none; padding-left: 0 !important; }
.code-list a { text-decoration: none; }
.code-list strong { font-family: var(--mono); font-size: 15px; }
.related { border-top: 1px solid var(--line); padding-top: 18px; }
.related h2 { font-size: 20px; }
.guide-links { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 10px; }
.guide-links a { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; text-decoration: none; font-weight: 600; }
.guide-links a:hover { border-color: var(--accent); }
#ratgeber .muted { margin: 18px 0 10px; }
.top-links { align-items: center; }
.top-links a.btn-nav { background: var(--accent); color: var(--accent-ink); border-bottom: 0; padding: 6px 14px; border-radius: 8px; font-weight: 700; }
.top-links a.btn-nav:hover { filter: brightness(1.06); }

/* Flaggen an den Sprachlinks (SVG statt Emoji: Windows zeigt Flaggen-Emoji als Buchstaben) */
.lang::before { content: ""; display: inline-block; width: 20px; height: 12px; margin-right: 6px; vertical-align: -1px; background: center / cover no-repeat; border-radius: 2px; box-shadow: 0 0 0 1px rgba(0, 0, 0, .12); }
.lang[lang="de"]::before { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 5 3'%3E%3Cpath fill='%23000' d='M0 0h5v1H0z'/%3E%3Cpath fill='%23D00' d='M0 1h5v1H0z'/%3E%3Cpath fill='%23FFCE00' d='M0 2h5v1H0z'/%3E%3C/svg%3E"); }
.lang[lang="en"]::before { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 60 30'%3E%3CclipPath id='s'%3E%3Cpath d='M0 0v30h60V0z'/%3E%3C/clipPath%3E%3CclipPath id='t'%3E%3Cpath d='M30 15h30v15zv15H0zH0V0zV0h30z'/%3E%3C/clipPath%3E%3Cg clip-path='url%28%23s%29'%3E%3Cpath d='M0 0v30h60V0z' fill='%23012169'/%3E%3Cpath d='M0 0l60 30m0-30L0 30' stroke='%23fff' stroke-width='6'/%3E%3Cpath d='M0 0l60 30m0-30L0 30' clip-path='url%28%23t%29' stroke='%23C8102E' stroke-width='4'/%3E%3Cpath d='M30 0v30M0 15h60' stroke='%23fff' stroke-width='10'/%3E%3Cpath d='M30 0v30M0 15h60' stroke='%23C8102E' stroke-width='6'/%3E%3C/g%3E%3C/svg%3E"); }