/* REA Treuhand – Entwurf Seetalwebsites, 03.11.2026
   Typografie und eine Kantonsgrenze. Instrument Serif + Hanken Grotesk, kühles Weiss, Luzerner Blau. */

:root {
  --grund: #F4F6F7;
  --flaeche: #E8ECEF;
  --text: #18212B;
  --text-2: rgba(24, 33, 43, 0.72);
  --text-3: rgba(24, 33, 43, 0.52);
  --linie: rgba(24, 33, 43, 0.14);
  --blau: #1F5FAE;
  --blau-dunkel: #184C8C;
  --ag: #2B2F33;

  --rand: 20px;
  --breite: 1200px;
  --luft: 64px;
  --r: 4px;

  --serif: "Instrument Serif", Georgia, serif;
  --schrift: "Hanken Grotesk", "Helvetica Neue", Arial, sans-serif;
  --expo: cubic-bezier(0.19, 1, 0.22, 1);
}
@media (min-width: 900px) { :root { --rand: 40px; --luft: 104px; } }

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--grund); color: var(--text); font: 400 17px/1.55 var(--schrift); }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3, p, dl, dd, ul, ol, figure, fieldset { margin: 0; }
ul, ol { padding: 0; list-style: none; }
fieldset { border: 0; padding: 0; min-width: 0; }
:focus-visible { outline: 2px solid var(--blau); outline-offset: 3px; }

.rahmen { max-width: calc(var(--breite) + 2 * var(--rand)); margin: 0 auto; padding: 0 var(--rand); }
.titel { font: 400 42px/1.02 var(--serif); letter-spacing: -0.01em; }
.lead { margin-top: 16px; max-width: 36em; color: var(--text-2); }
@media (min-width: 900px) { .titel { font-size: 64px; } }

.knopf {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px;
  background: var(--blau); color: #fff; border: 0; border-radius: var(--r);
  font: 600 16px/1 var(--schrift); text-decoration: none; cursor: pointer;
  transition: background-color 150ms ease-out, transform 150ms ease-out;
}
.knopf:hover { background: var(--blau-dunkel); }
.knopf:active { transform: translateY(1px); }
.knopf--klein { min-height: 40px; padding: 0 16px; font-size: 15px; }
.textlink { display: inline-block; padding: 8px 0; font-weight: 500; text-underline-offset: 4px; }

/* Kopf */
.kopf { position: sticky; top: 0; z-index: 10; background: rgba(244, 246, 247, 0.94); backdrop-filter: blur(8px); border-bottom: 1px solid var(--linie); }
.kopf__innen { max-width: calc(var(--breite) + 2 * var(--rand)); margin: 0 auto; padding: 8px var(--rand); display: flex; align-items: center; gap: 24px; min-height: 56px; }
.kopf__marke { padding: 8px 0; text-decoration: none; font: 600 17px/1 var(--schrift); letter-spacing: 0.04em; }
.kopf__marke span { font-weight: 400; letter-spacing: 0; color: var(--text-2); }
.kopf__nav { display: none; gap: 24px; margin-left: auto; }
.kopf__nav a { padding: 8px 0; text-decoration: none; font-weight: 500; color: var(--text-2); }
.kopf__nav a:hover { color: var(--text); }
.kopf .knopf { margin-left: auto; }
@media (min-width: 900px) { .kopf__nav { display: flex; } .kopf .knopf { margin-left: 0; } }

/* Start */
.start { padding: 40px 0 var(--luft); }
.start__titel { font: 400 clamp(52px, 15vw, 76px)/0.95 var(--serif); letter-spacing: -0.02em; }
.grenze { margin-top: 24px; display: grid; grid-template-columns: 1fr 2px 1fr; align-items: stretch; height: 120px; }
.grenze__lu, .grenze__ag { display: flex; align-items: center; font: 400 italic 30px/1 var(--serif); }
.grenze__lu { justify-content: flex-end; padding-right: 24px; color: var(--blau); }
.grenze__ag { padding-left: 24px; color: var(--ag); }
.grenze__linie { background: repeating-linear-gradient(to bottom, var(--text) 0 8px, transparent 8px 14px); transform-origin: top; }
.start__unten { margin-top: 24px; display: grid; gap: 24px; }
.start__satz { color: var(--text-2); max-width: 34em; }
.start__aktion { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; }
@media (min-width: 900px) {
  .start { padding-top: 64px; }
  .start__titel { font-size: clamp(96px, 9.6vw, 144px); }
  .grenze { height: 200px; margin-top: 40px; }
  .grenze__lu, .grenze__ag { font-size: 56px; }
  .grenze__lu { padding-right: 40px; }
  .grenze__ag { padding-left: 40px; }
  .start__unten { grid-template-columns: 7fr 5fr; gap: 64px; align-items: end; margin-top: 40px; }
}
.js .grenze__linie { transform: scaleY(0); }
.js .grenze__lu, .js .grenze__ag { opacity: 0; }
.js .grenze__lu { transform: translateX(16px); }
.js .grenze__ag { transform: translateX(-16px); }
.js.ist-da .grenze__linie { transform: none; transition: transform 1000ms var(--expo); }
.js.ist-da .grenze__lu, .js.ist-da .grenze__ag { opacity: 1; transform: none; transition: opacity 800ms var(--expo) 400ms, transform 900ms var(--expo) 400ms; }

/* Angebot */
.angebot { padding: var(--luft) 0; background: #fff; }
.angebot__raster { margin-top: 40px; display: grid; border-top: 1px solid var(--text); }
.punkt { padding: 24px 0; border-bottom: 1px solid var(--linie); }
.punkt h3 { font: 400 30px/1.1 var(--serif); }
.punkt p { margin-top: 8px; color: var(--text-2); max-width: 34em; }
@media (min-width: 900px) {
  .angebot__raster { grid-template-columns: 1fr 1fr; column-gap: 64px; }
  .punkt { padding: 40px 0; }
  .punkt h3 { font-size: 36px; }
}

/* Zwei Kantone */
.kantone { padding: var(--luft) 0; background: var(--flaeche); }
.kantone__raster { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.kanton { padding: 24px 16px 24px 0; }
.kanton--ag { padding: 24px 0 24px 16px; border-left: 2px dashed var(--text); }
.kanton__kurz { font: 400 72px/1 var(--serif); }
.kanton--lu .kanton__kurz { color: var(--blau); }
.kanton p:last-child { margin-top: 8px; color: var(--text-2); font-size: 16px; }
.kantone__satz { grid-column: 1 / -1; margin-top: 40px; font: 400 26px/1.25 var(--serif); max-width: 30em; }
@media (min-width: 900px) {
  .kanton { padding: 40px 40px 40px 0; }
  .kanton--ag { padding: 40px 0 40px 40px; }
  .kanton__kurz { font-size: 160px; }
  .kantone__satz { font-size: 36px; }
}

/* Unterlagen */
.unterlagen { padding: var(--luft) 0; }
.unterlagen__raster { display: grid; gap: 40px; }
.zaehler { margin-top: 40px; font-size: 17px; color: var(--text-2); }
.zaehler strong { font: 400 56px/1 var(--serif); color: var(--blau); margin-right: 8px; }
.balken { margin-top: 16px; height: 4px; background: var(--linie); border-radius: 2px; overflow: hidden; }
.balken span { display: block; height: 100%; width: 0; background: var(--blau); transition: width 500ms var(--expo); }
.liste { display: grid; gap: 24px; }
.liste legend { font: 400 26px/1.1 var(--serif); margin-bottom: 8px; padding: 0; }
.liste label { display: flex; align-items: center; gap: 16px; min-height: 48px; padding: 8px 0; border-bottom: 1px solid var(--linie); cursor: pointer; }
.liste input { appearance: none; width: 24px; height: 24px; margin: 0; border: 1.5px solid var(--text-3); border-radius: var(--r); background: #fff; flex: none; display: grid; place-items: center; cursor: pointer; transition: background-color 150ms ease-out, border-color 150ms ease-out; }
.liste input::after { content: ""; width: 10px; height: 6px; border-left: 2px solid #fff; border-bottom: 2px solid #fff; transform: rotate(-45deg) translate(1px, -1px) scale(0); transition: transform 200ms var(--expo); }
.liste input:checked { background: var(--blau); border-color: var(--blau); }
.liste input:checked::after { transform: rotate(-45deg) translate(1px, -1px) scale(1); }
.liste input:checked + span { color: var(--text-3); text-decoration: line-through; text-decoration-thickness: 1px; }
.liste__hinweis { font-size: 14px; color: var(--text-3); }
@media (min-width: 900px) { .unterlagen__raster { grid-template-columns: 5fr 7fr; gap: 64px; align-items: start; } .unterlagen__raster > div:first-child { position: sticky; top: 104px; } }

/* Über mich */
.ueber { padding: var(--luft) 0; background: #fff; }
.ueber__raster { display: grid; gap: 40px; }
.ueber__name { font: 400 italic 64px/0.92 var(--serif); color: var(--blau); }
.werte { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px; }
.werte li { padding: 8px 16px; border: 1px solid var(--linie); border-radius: 999px; font-size: 15px; color: var(--text-2); }
@media (min-width: 900px) { .ueber__raster { grid-template-columns: 6fr 6fr; gap: 64px; align-items: center; } .ueber__name { font-size: 128px; } }

/* Kontakt */
.kontakt { background: var(--text); color: var(--grund); padding-bottom: var(--luft); }
.kontakt__bild img { width: 100%; height: 32svh; min-height: 200px; max-height: 440px; object-fit: cover; filter: saturate(0.8); }
.kontakt__raster { display: grid; gap: 40px; padding-top: var(--luft); }
.kontakt .lead { color: rgba(244, 246, 247, 0.74); }
.adresse { margin-top: 40px; display: grid; gap: 16px; }
.adresse dt { font-size: 14px; color: rgba(244, 246, 247, 0.52); }
.adresse a { display: inline-block; padding: 8px 0; }
.anfrage { display: grid; gap: 24px; padding: 24px; background: #fff; color: var(--text); border-radius: var(--r); }
.eingabe { display: grid; gap: 8px; }
.eingabe > span, .eingabe legend { font-size: 14px; font-weight: 500; color: var(--text-2); padding: 0; margin-bottom: 8px; }
.eingabe > span { margin-bottom: 0; }
.eingabe input, .eingabe textarea { width: 100%; min-height: 48px; padding: 8px 16px; border: 1px solid rgba(24, 33, 43, 0.24); border-radius: var(--r); background: #fff; color: var(--text); font: 400 17px/1.5 var(--schrift); }
.eingabe input:focus, .eingabe textarea:focus { outline: 2px solid var(--blau); outline-offset: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips label { position: relative; }
.chips input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.chips span { display: inline-flex; align-items: center; min-height: 40px; padding: 0 16px; border: 1px solid rgba(24, 33, 43, 0.24); border-radius: var(--r); font-weight: 500; transition: background-color 150ms ease-out; }
.chips input:checked + span { background: var(--blau); color: #fff; border-color: var(--blau); }
.chips input:focus-visible + span { outline: 2px solid var(--blau); outline-offset: 2px; }
.anfrage__liste { padding: 16px; background: var(--flaeche); border-radius: var(--r); font-size: 15px; color: var(--text-2); }
.anfrage .knopf { justify-self: start; }
.anfrage__hinweis { font-size: 14px; color: var(--text-3); }
@media (min-width: 900px) { .kontakt__raster { grid-template-columns: 5fr 7fr; gap: 64px; } .anfrage { padding: 40px; } }

/* Fuss */
.fuss { padding: 40px 0; background: var(--text); color: rgba(244, 246, 247, 0.7); border-top: 1px solid rgba(244, 246, 247, 0.12); font-size: 15px; }
.fuss__raster { display: grid; gap: 8px; }
.fuss__name { color: var(--grund); font-weight: 600; }
.fuss__entwurf a { display: inline-block; padding: 8px 0; color: var(--grund); }
@media (min-width: 900px) { .fuss__raster { grid-template-columns: auto 1fr auto; gap: 40px; align-items: center; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .grenze__linie, .js .grenze__lu, .js .grenze__ag { opacity: 1 !important; transform: none !important; transition: none !important; }
  .balken span, .liste input::after { transition: none; }
}