/*
  Rohr- und Kanalreinigung als Scroll-Film. Tiefe Untergrund-Bühne (Petrol, später fast schwarz bei der Kamerafahrt),
  Rohr in Kunststoff-Orange, Wasser in Blau. Klare Grotesk aus Systemschriften, keine externen Fonts.
  Der Film ist dunkel, die Abschnitte darunter sind hell.
*/
:root {
  color-scheme: light;
  --bg: #f1f4f6;
  --bg-2: #e7ecf0;
  --surface: #ffffff;
  --ink: #0f1d2b;
  --muted: #4d5d6c;
  --line: #d3dce3;
  --cool: #1b7ea6;
  --cool-soft: #d6ecf5;
  --warm: #e0873f;
  --warm-ink: #b9440d;
  --warm-soft: #fbe6d8;
  --display: "Segoe UI Variable Display", "Segoe UI", "SF Pro Display", -apple-system, "Helvetica Neue", Arial, sans-serif;
  --sans: "Segoe UI Variable Text", "Segoe UI", -apple-system, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  --wrap: 1240px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --r: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; scrollbar-color: #9fb0bf var(--bg); }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 1.0625rem; line-height: 1.6; -webkit-font-smoothing: antialiased; }
::selection { background: var(--warm-soft); color: var(--ink); }
a { color: inherit; text-underline-offset: 3px; }
h1, h2, h3 { margin: 0; font-family: var(--display); font-weight: 650; letter-spacing: -0.025em; text-wrap: balance; }
:focus-visible { outline: 3px solid var(--cool); outline-offset: 3px; border-radius: 6px; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 8px; }
.skip:focus { top: 12px; }
.demo-bar { background: var(--ink); color: #cfd9e2; font-size: .82rem; text-align: center; padding: 7px 16px; }

/* Navigation */
.nav { position: sticky; top: 0; z-index: 50; background: rgb(241 244 246 / .92); border-bottom: 1px solid var(--line); }
@supports (backdrop-filter: blur(1px)) { .nav { background: rgb(241 244 246 / .78); backdrop-filter: blur(14px) saturate(150%); } }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-family: var(--display); font-weight: 650; font-size: 1.16rem; letter-spacing: -0.01em; min-width: 0; }
.brand > span:last-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
/* Zeichen: Rohr im Querschnitt */
.brand-mark { flex: none; width: 24px; height: 24px; border-radius: 50%; border: 6px solid var(--warm); background: var(--cool); }
.nav-links { display: flex; align-items: center; gap: 28px; flex: none; }
.nav-links a:not(.btn) { text-decoration: none; color: var(--muted); font-size: .96rem; }
.nav-links a:not(.btn):hover { color: var(--ink); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 24px; border-radius: 10px; background: var(--warm-ink); color: #fff; text-decoration: none; font-family: var(--display); font-weight: 650; font-size: 1rem; border: 1px solid transparent; cursor: pointer; transition: transform .3s var(--ease), background .3s, box-shadow .3s; white-space: nowrap; }
.btn:hover { transform: translateY(-2px); background: #a63b09; box-shadow: 0 14px 28px -16px rgb(185 68 13 / .9); }
.btn-ghost { background: rgb(255 255 255 / .7); color: var(--ink); border-color: #c4cfd8; }
.btn-ghost:hover { background: #fff; box-shadow: 0 12px 24px -18px rgb(15 29 43 / .6); }
.btn-small { min-height: 42px; padding: 0 18px; font-size: .92rem; }

/* ===== Der Film ===== */
.story { --stage: rgb(13 24 31); position: relative; height: calc(6 * 100svh); }
.stage { position: sticky; top: 66px; height: calc(100svh - 66px); overflow: hidden; background-color: var(--stage); }
/* weiches Raumlicht oben und eine Lichtkante am Boden, auf jeder Bühnenfarbe */
.stage::before { content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(42% 52% at 68% 28%, rgb(120 190 230 / .10), transparent 70%), linear-gradient(180deg, transparent 62%, rgb(0 0 0 / .22)); }
#film { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
/* Rechner: links fließt das Modell in die Bühnenfarbe aus, damit der Text immer frei steht */
.stage::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: min(54%, 760px); pointer-events: none; z-index: 1;
  background: linear-gradient(90deg, var(--stage) 0%, color-mix(in srgb, var(--stage) 88%, transparent) 55%, transparent); }
.fallback { position: absolute; right: 4%; top: 50%; width: min(50vw, 640px); transform: translateY(-50%); }
.still .stage { background-color: #0d1820; }

.chapters { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.ch { height: 100svh; display: flex; align-items: center; position: relative; }
.ch .inner { pointer-events: auto; width: min(480px, 90vw); margin-left: max(28px, calc((100vw - var(--wrap)) / 2 + 28px)); }
.ch .inner > * { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.ch.is-in .inner > * { opacity: 1; transform: none; }
.ch.is-in .inner > *:nth-child(2) { transition-delay: .08s; }
.ch.is-in .inner > *:nth-child(3) { transition-delay: .16s; }
.ch.is-in .inner > *:nth-child(4) { transition-delay: .24s; }
.ch h1 { font-size: clamp(3rem, 6vw, 5.6rem); line-height: .98; letter-spacing: -0.035em; color: #f2f6fa; }
.ch h1 em { font-style: normal; color: #ff9b57; }
.ch h2 { font-size: clamp(2.3rem, 4.2vw, 3.8rem); line-height: 1.02; letter-spacing: -0.03em; color: #f2f6fa; }
.ch p { color: #b4c3d1; font-size: 1.14rem; max-width: 38ch; margin: 22px 0 0; }
.ch .lead { font-size: 1.2rem; }
.ch .btn-ghost { background: rgb(255 255 255 / .08); color: #f2f6fa; border-color: rgb(255 255 255 / .28); }
.ch .btn-ghost:hover { background: rgb(255 255 255 / .16); box-shadow: none; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.rating { display: inline-flex; align-items: center; gap: 6px; margin-top: 22px !important; font-size: .95rem !important; padding: 8px 14px; border-radius: 10px; background: rgb(255 255 255 / .08); border: 1px solid rgb(255 255 255 / .2); color: #b4c3d1 !important; }
.rating[hidden] { display: none; }
.rating .stars { color: #e39a1c; letter-spacing: .06em; }
.rating strong { color: #fff; }
.scroll-hint { position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%); font-size: .78rem; letter-spacing: .08em; color: #9fb0bf; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.scroll-hint span { width: 2px; height: 42px; border-radius: 2px; background: linear-gradient(var(--cool), transparent); animation: hint 2.2s var(--ease) infinite; transform-origin: top; }
@keyframes hint { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* Fortschritt rechts als Tiefenmesser: Punkt wandert mit */
.gauge { --p: 0; position: absolute; right: 34px; top: 50%; transform: translateY(-50%); z-index: 3; display: flex; gap: 14px; align-items: stretch; height: 230px; }
.gauge-track { position: relative; width: 6px; border-radius: 3px; background: rgb(230 238 245 / .16); order: 2; }
.gauge-fill { position: absolute; left: 0; right: 0; bottom: 0; height: calc(var(--p) * 100%); border-radius: 3px; background: linear-gradient(0deg, var(--cool), #8a7fb8 55%, var(--warm)); background-size: 100% 230px; background-position: bottom; }
.gauge-dot { position: absolute; left: 50%; bottom: calc(var(--p) * 100%); width: 16px; height: 16px; margin: 0 0 -8px -8px; border-radius: 50%; background: #fff; border: 4px solid color-mix(in srgb, var(--warm) calc(var(--p) * 100%), var(--cool)); box-shadow: 0 4px 10px -3px rgb(15 29 43 / .45); }
.gauge ol { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column-reverse; justify-content: space-between; text-align: right; order: 1; }
.gauge li { font-size: .76rem; line-height: 1; color: #f2f6fa; opacity: 0; transform: translateX(6px); transition: opacity .4s, transform .4s var(--ease); white-space: nowrap; }
.gauge li.on { opacity: 1; transform: none; font-weight: 600; }
.gauge:hover li { opacity: .55; transform: none; } .gauge:hover li.on { opacity: 1; }

/* Beschriftungen: Punkt in der Farbe der Leitung, Schild hell */
.labels { position: absolute; inset: 0; pointer-events: none; z-index: 2; }
.lbl { --c: var(--warm); position: absolute; left: 0; top: 0; opacity: 0; will-change: transform; }
.lbl.cool { --c: #3d8cff; }
.lbl.red { --c: #e23b2e; }
.lbl i { position: absolute; left: -6px; top: -6px; width: 12px; height: 12px; border-radius: 50%; background: var(--c); box-shadow: 0 0 0 4px color-mix(in srgb, var(--c) 30%, transparent), 0 0 16px color-mix(in srgb, var(--c) 70%, transparent); }
.lbl span { position: absolute; left: 32px; top: -15px; white-space: nowrap; font-size: .84rem; font-weight: 600; color: #f2f6fa; padding: 6px 12px; border-radius: 8px; background: rgb(12 24 36 / .86); border: 1px solid color-mix(in srgb, var(--c) 55%, #2c3c4c); box-shadow: 0 10px 24px -14px rgb(0 0 0 / .9); }
.lbl span::before { content: ""; position: absolute; right: 100%; top: 50%; width: 22px; height: 1px; background: var(--c); }
.lbl.flip span { left: auto; right: 32px; }
.lbl.flip span::before { right: auto; left: 100%; }
.lbl::after { content: ""; position: absolute; left: 0; top: var(--dt, 0px); width: 1px; height: var(--dy, 0px); background: var(--c); }
.lbl.drop span::before { width: 32px; }

/* ===== Abschnitte unter dem Film ===== */
.block { padding: 120px 0; position: relative; z-index: 3; background: var(--bg); }
.block.alt { background: var(--bg-2); }
.head { max-width: 640px; margin-bottom: 56px; }
.head p { color: var(--muted); margin: 18px 0 0; max-width: 56ch; }
.block h2 { font-size: clamp(2.2rem, 4vw, 3.4rem); line-height: 1.04; }

/* Leistungen als zwei Leitungen: links kalt (Sanitär), rechts warm (Heizung). Jeder Punkt ist ein Abzweig. */
.lines { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.line { --c: var(--cool); --soft: var(--cool-soft); background: var(--surface); border-radius: var(--r); padding: 34px 34px 18px; box-shadow: 0 1px 2px rgb(15 29 43 / .05), 0 24px 50px -36px rgb(15 29 43 / .35); }
.line-warm { --c: var(--warm); --soft: var(--warm-soft); }
.line h3 { font-size: 1.7rem; display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.tag { align-self: flex-start; font-family: var(--sans); font-size: .8rem; font-weight: 600; letter-spacing: 0; color: color-mix(in srgb, var(--c) 70%, #0f1d2b); background: var(--soft); padding: 4px 10px; border-radius: 999px; }
.line ul { list-style: none; margin: 0; padding: 0 0 0 30px; position: relative; }
.line ul::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 30px; width: 4px; border-radius: 2px; background: linear-gradient(180deg, var(--c), color-mix(in srgb, var(--c) 35%, #fff)); }
.line li { position: relative; padding: 14px 0 18px; }
.line li + li { border-top: 1px solid var(--line); }
.line li::before { content: ""; position: absolute; left: -22px; top: 23px; width: 14px; height: 4px; background: var(--c); border-radius: 2px; }
.line li::after { content: ""; position: absolute; left: -31px; top: 18px; width: 14px; height: 14px; box-sizing: border-box; border-radius: 50%; background: #fff; border: 3px solid var(--c); }
.line strong { display: block; font-family: var(--display); font-size: 1.18rem; font-weight: 650; letter-spacing: -0.01em; }
.line li span { display: block; color: var(--muted); font-size: 1rem; margin-top: 4px; }

/* Ablauf: Schritte an einem durchgehenden Rohr, das von kalt nach warm läuft */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; position: relative; }
.steps::before { content: ""; position: absolute; left: 22px; right: 22px; top: 21px; height: 4px; border-radius: 2px; background: linear-gradient(90deg, var(--cool), var(--warm)); }
.steps li { position: relative; padding-top: 64px; }
.steps b { position: absolute; left: 0; top: 0; width: 46px; height: 46px; display: grid; place-items: center; border-radius: 50%; background: var(--surface); border: 4px solid var(--c, var(--cool)); font-family: var(--display); font-weight: 700; font-size: 1.15rem; font-variant-numeric: tabular-nums; }
.steps li:nth-child(2) b { --c: #4a72cc; } .steps li:nth-child(3) b { --c: #8a6fb0; } .steps li:nth-child(4) b { --c: #c46a72; } .steps li:nth-child(5) b { --c: var(--warm); }
.steps h3 { font-size: 1.3rem; }
.steps p { color: var(--muted); font-size: .98rem; margin: 8px 0 0; }

.two { display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: start; }
.hours { margin: 28px 0; }
.hours div { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.hours dt { font-weight: 600; } .hours dd { margin: 0; color: var(--muted); text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
address { font-style: normal; line-height: 1.7; margin-bottom: 24px; }
.note { color: var(--muted); font-size: .9rem; margin: 24px 0 0; }

/* Formular */
.form { background: var(--surface); border-radius: var(--r); padding: 34px; box-shadow: 0 1px 2px rgb(15 29 43 / .05), 0 40px 80px -50px rgb(15 29 43 / .45); }
.form h3 { font-size: 1.8rem; margin-bottom: 20px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: .94rem; margin-bottom: 6px; }
.opt { font-weight: 400; color: var(--muted); }
.field input:not([type=checkbox]), .field select, .field textarea { width: 100%; min-height: 50px; padding: 12px 14px; border: 1px solid #c3ced7; border-radius: 10px; background: #fbfcfd; font: inherit; color: var(--ink); caret-color: var(--warm-ink); }
.field input::placeholder, .field textarea::placeholder { color: #6f7f8d; }
.field textarea { min-height: 96px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid var(--cool); outline-offset: 1px; border-color: transparent; }
.check { display: flex !important; gap: 12px; align-items: flex-start; font-weight: 400 !important; color: var(--muted); }
.check input { width: 22px; height: 22px; margin-top: 2px; accent-color: var(--cool); flex: none; }
.error { display: none; color: #b42318; font-size: .9rem; margin: 6px 0 0; }
.invalid .error { display: block; }
.invalid input, .invalid select, .invalid textarea { border-color: #b42318; }
.success { display: none; padding: 22px; border-radius: 10px; background: var(--cool-soft); border: 1px solid #9cc0ea; }
.success strong { display: block; font-family: var(--display); font-size: 1.3rem; margin-bottom: 4px; }
.sent .fields { display: none; } .sent .success { display: block; }

footer { background: var(--ink); color: #b4c3d1; padding: 36px 0; position: relative; z-index: 3; font-size: .92rem; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer nav { display: flex; gap: 22px; }
footer a { color: #f2f6fa; }

/* Rechtsseiten */
.legal { padding: 56px 0 96px; }
.legal .wrap { max-width: 780px; }
.legal h1 { font-size: clamp(2.2rem, 4vw, 3.2rem); margin-bottom: 24px; }
.legal h2 { font-size: 1.35rem; margin: 36px 0 10px; }
.legal p { color: var(--muted); }
.todo { background: #f7d64a; color: #1d1806; padding: 1px 5px; border-radius: 4px; }
.legal .box { padding: 16px 18px; border-radius: 10px; background: var(--surface); box-shadow: 0 1px 2px rgb(15 29 43 / .06); margin-bottom: 8px; }

/* Einblenden */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease) var(--d, 0ms), transform .9s var(--ease) var(--d, 0ms); }
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ch .inner > *, .js .reveal { transition: none !important; }
  .scroll-hint span { animation: none; }
}

@media (max-width: 960px) {
  .lines { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 0; }
  .steps::before { left: 21px; right: auto; top: 20px; bottom: 20px; width: 4px; height: auto; background: linear-gradient(180deg, var(--cool), var(--warm)); }
  .steps li { padding: 8px 0 26px 70px; min-height: 70px; }
  .two { grid-template-columns: 1fr; gap: 44px; }
}
/* Handy: Modell oben, Text unten auf der Bühnenfarbe */
@media (max-width: 820px) {
  .stage::after { display: none; }
  .ch { align-items: flex-end; }
  .ch .inner { width: 100%; margin: 0; padding: 64px 22px 32px; background: linear-gradient(color-mix(in srgb, var(--stage) 0%, transparent), color-mix(in srgb, var(--stage) 94%, transparent) 34%); }
  .ch h1 { font-size: 2.6rem; }
  .ch h2 { font-size: 2.05rem; }
  .ch p { font-size: 1.02rem; margin-top: 12px; }
  .actions { margin-top: 20px; }
  .gauge { display: none; }
  .scroll-hint { display: none; }
  .fallback { left: 50%; right: auto; top: 28%; width: 88vw; transform: translate(-50%, -50%); }
  .lbl span { font-size: .7rem; padding: 4px 8px; left: 20px; top: -12px; }
  .lbl.nomobile { display: none; }
  .lbl.flip span { right: 20px; }
  .lbl span::before { width: 12px; }
  .lbl.drop span::before { width: 20px; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 20px; }
  .nav-links a:not(.btn) { display: none; }
  .brand { font-size: 1rem; }
  .row2 { grid-template-columns: 1fr; }
  .block { padding: 84px 0; }
  .line { padding: 26px 22px 10px; }
  .form { padding: 24px 20px; }
  footer .wrap { flex-direction: column; }
}
@media (max-width: 480px) {
  .nav .wrap { gap: 12px; }
  .brand { font-size: .94rem; gap: 9px; }
  .brand-mark { width: 20px; height: 20px; border-width: 5px; }
  .nav .btn-small { padding: 0 12px; font-size: .8rem; min-height: 38px; }
}

/* Echte Fassung: lange E-Mail-Adresse umbrechen, Verweis auf die Hauptseite */
.hours dd { white-space: normal; overflow-wrap: anywhere; }
.hours dd a { text-decoration: none; }
.more-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.more-card { display: flex; flex-direction: column; gap: 10px; padding: 32px; border-radius: var(--r); background: var(--surface); text-decoration: none; box-shadow: 0 1px 2px rgb(15 29 43 / .05), 0 24px 50px -36px rgb(15 29 43 / .35); transition: transform .3s var(--ease), box-shadow .3s; }
.more-card:hover { transform: translateY(-3px); box-shadow: 0 1px 2px rgb(15 29 43 / .05), 0 30px 56px -34px rgb(15 29 43 / .5); }
.more-card h3 { font-size: 1.5rem; }
.more-card p { color: var(--muted); margin: 0; }
.more-card span { margin-top: auto; padding-top: 14px; font-weight: 600; color: var(--warm-ink); }
.more-card span::after { content: " \2192"; }
@media (max-width: 960px) { .more-grid { grid-template-columns: 1fr; } }
footer nav { flex-wrap: wrap; }