/* BauBund Service UG – Website (statisch, ohne CMS) */

@font-face { font-family: "Josefin Sans"; font-weight: 600; font-display: swap; src: url("schriften/josefin-sans-v34-latin-600.woff2") format("woff2"); }
@font-face { font-family: "Josefin Sans"; font-weight: 700; font-display: swap; src: url("schriften/josefin-sans-v34-latin-700.woff2") format("woff2"); }
@font-face { font-family: "Open Sans"; font-weight: 400; font-display: swap; src: url("schriften/open-sans-v44-latin-regular.woff2") format("woff2"); }
@font-face { font-family: "Open Sans"; font-weight: 600; font-display: swap; src: url("schriften/open-sans-v44-latin-600.woff2") format("woff2"); }

:root {
  --blau: #283d4b;
  --blau-hell: #3a5567;
  --akzent: #7ebec5;
  --braun: rgba(128, 103, 79, 0.5);
  --text: #333b42;
  --text-hell: #5d6870;
  --grau: #f4f6f7;
  --linie: #e2e6e9;
  --weiss: #ffffff;
  --breite: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Open Sans", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  color: var(--text);
  background: var(--weiss);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blau-hell); }
a:hover { color: var(--blau); }
h1, h2, h3 { font-family: "Josefin Sans", Helvetica, Arial, sans-serif; font-weight: 700; line-height: 1.2; color: var(--blau); margin: 0 0 0.6em; }
h1 { font-size: clamp(2.2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); }
h3 { font-size: 1.4rem; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--breite); margin: 0 auto; padding: 0 24px; }

/* Kopfzeile */
.kopf { position: sticky; top: 0; z-index: 50; background: var(--weiss); box-shadow: 0 1px 0 var(--linie); }
.kopf .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 64px; }
.marke { font-family: "Josefin Sans", sans-serif; font-weight: 700; font-size: 1.35rem; color: var(--blau); text-decoration: none; letter-spacing: 0.02em; }
.marke span { color: var(--akzent); }
.menue-schalter { display: none; }
.menue-knopf { display: none; cursor: pointer; padding: 10px; }
.menue-knopf span { display: block; width: 26px; height: 3px; background: var(--blau); margin: 5px 0; border-radius: 2px; }
nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 6px; }
nav a { display: block; padding: 10px 14px; font-weight: 600; color: #4c4c4c; text-decoration: none; border-radius: 4px; }
nav a:hover, nav a[aria-current="page"] { color: var(--blau); background: var(--grau); }

/* Bühne mit Bild */
.buehne {
  position: relative;
  color: var(--weiss);
  background-size: cover;
  background-position: center 35%;
  padding: 9vw 0 13vw;
  clip-path: polygon(0 0, 100% 0, 100% 86%, 72% 100%, 0 90%);
}
.buehne::before { content: ""; position: absolute; inset: 0; background: linear-gradient(70deg, var(--blau) 0%, var(--braun) 100%); }
.buehne .wrap { position: relative; }
.buehne h1 { color: var(--weiss); max-width: 13em; }
.buehne h1 .einzug { display: block; padding-left: 2.4em; }
.buehne p { font-size: 1.15rem; max-width: 34em; opacity: 0.95; }
.buehne.klein { padding: 6vw 0 9vw; }
.buehne.klein h1 { font-size: clamp(2rem, 4.4vw, 3.2rem); }
.ablesung { background-image: url("bilder/ablesung.jpg"); }
.messtechnik { background-image: url("bilder/messtechnik.jpg"); }
.rauchwarnmelder { background-image: url("bilder/rauchwarnmelder.jpg"); }
.heizung { background-image: url("bilder/heizung.jpg"); }

/* Abschnitte */
.abschnitt { padding: 72px 0; }
.abschnitt.grau { background: var(--grau); }
.mitte { text-align: center; }
.lead { font-size: 1.15rem; color: var(--text-hell); max-width: 46em; margin: 0 auto 1.5em; }

/* Leistungskarten */
.karten { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; margin-top: 36px; }
.karte { background: var(--weiss); border: 1px solid var(--linie); border-radius: 10px; overflow: hidden; display: flex; flex-direction: column; }
.karte img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; }
.karte .innen { padding: 26px 28px 30px; display: flex; flex-direction: column; flex: 1; }
.karte ul { padding-left: 1.2em; margin: 0 0 1.2em; }
.karte .knopf { margin-top: auto; align-self: flex-start; }

/* Knöpfe */
.knopf {
  display: inline-block;
  padding: 13px 26px;
  font-family: "Josefin Sans", sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--weiss);
  background: var(--blau);
  border-radius: 4px;
  border: 2px solid var(--blau);
}
.knopf:hover { background: var(--blau-hell); border-color: var(--blau-hell); color: var(--weiss); }
.knopf.hell { background: transparent; color: var(--weiss); border-color: var(--weiss); }
.knopf.hell:hover { background: var(--weiss); color: var(--blau); }

/* Textseiten */
.text { max-width: 780px; }
.text ul { padding-left: 1.3em; }
.text li { margin-bottom: 0.4em; }
.hinweis { border-left: 4px solid var(--akzent); background: var(--grau); padding: 16px 20px; border-radius: 0 6px 6px 0; margin: 1.5em 0; }

/* Aufruf-Band */
.band { background: var(--blau); color: var(--weiss); padding: 56px 0; }
.band .wrap { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between; }
.band h2 { color: var(--weiss); margin: 0; }

/* Kontaktblock */
.kontakt-raster { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; margin-top: 32px; }
.kontakt-raster div { background: var(--weiss); border: 1px solid var(--linie); border-radius: 10px; padding: 24px; }
.kontakt-raster h3 { font-size: 1.1rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.4em; }
.kontakt-raster p { margin: 0; }

/* Fußzeile */
.fuss { background: #1d2c36; color: #c9d3d9; padding: 40px 0; font-size: 0.95rem; }
.fuss .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; }
.fuss a { color: #c9d3d9; text-decoration: none; margin-right: 18px; }
.fuss a:hover { color: var(--weiss); text-decoration: underline; }

/* Handy */
@media (max-width: 820px) {
  body { font-size: 16px; }
  .menue-knopf { display: block; }
  nav { position: absolute; top: 64px; left: 0; right: 0; background: var(--weiss); box-shadow: 0 8px 16px rgba(0,0,0,.08); display: none; }
  nav ul { flex-direction: column; padding: 8px 16px 16px; }
  .menue-schalter:checked ~ nav { display: block; }
  .buehne { padding: 64px 0 96px; clip-path: polygon(0 0, 100% 0, 100% 92%, 70% 100%, 0 94%); }
  .buehne h1 .einzug { padding-left: 0; display: inline; }
  .abschnitt { padding: 52px 0; }
}