/* ============================================================
   T.W. Gasecenter GmbH – gemeinsames Stylesheet
   Wird von index.php, impressum.php und datenschutz.php genutzt
   ============================================================ */

:root {
  --gruen: #0a4d0a;
  --gruen-hell: #146914;
  --gruen-tint: #eef4ee;
  --text: #2b2b2b;
  --text-leise: #5f6b5f;
  --linie: #d8e2d8;
  --weiss: #ffffff;
  --hell: #f7f9f7;
  --max: 1080px;      /* Breite von Kopf, Footer und Startseiten-Inhalt */
  --max-text: 860px;  /* schmalere Lesebreite für Unterseiten-Inhalt   */
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  line-height: 1.5;
  background: var(--weiss);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--gruen); }

/* ---------- Lesetext: Blocksatz & automatische Silbentrennung ---------- */
.lead,
.hero p,
.card li,
.feature p,
.kontakt-block p,
main p,
main li,
.box,
.klein,
.form-hinweis,
.dsgvo-zeile label {
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
  -ms-hyphens: auto;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Kopf / Navigation ---------- */
header {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--linie);
  z-index: 50;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 92px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}
.brand { display: flex; align-items: center; text-decoration: none; }
.brand img { height: 68px; width: auto; max-width: 360px; display: block; }
.brand .brand-fallback {
  font-size: 21px; font-weight: bold; color: var(--gruen);
  letter-spacing: 0.3px; white-space: nowrap;
}
.brand .brand-fallback span {
  color: var(--text-leise); font-weight: normal; font-size: 15px;
  display: block; letter-spacing: 0;
}

/* Menü – gilt für #hauptnav (Startseite) und .nav-links (Unterseiten) */
nav ul, .nav-links { list-style: none; display: flex; gap: 28px; }
nav a, .nav-links a {
  text-decoration: none;
  color: var(--text);
  font-size: 19px;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: border-color .15s, color .15s;
}
nav a:hover, .nav-links a:hover { color: var(--gruen); border-bottom-color: var(--gruen); }
nav a.aktiv, .nav-links a.aktiv { color: var(--gruen); border-bottom-color: var(--gruen); font-weight: bold; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; font-size: 26px; color: var(--gruen); line-height: 1; }

/* ---------- Nach-oben-Button ---------- */
.top-btn {
  position: fixed;
  right: 20px; bottom: 20px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--gruen);
  color: #fff;
  border: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 3px 10px rgba(0,0,0,0.25);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .2s, transform .2s, visibility .2s;
  z-index: 60;
}
.top-btn.sichtbar { opacity: 1; visibility: visible; transform: translateY(0); }
.top-btn:hover { background: var(--gruen-hell); }
.top-btn:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }

/* ---------- Hero (Startseite) ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--gruen) 0%, #063406 100%);
  color: #fff;
  padding: 84px 0 76px;
}
.hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46%;
  height: 100%;
  background: url('../grafiken/header-bild.jpg') top right / cover no-repeat;
  -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,1) 60%, rgba(0,0,0,0) 100%);
  mask-image: linear-gradient(to left, rgba(0,0,0,1) 60%, rgba(0,0,0,0) 100%);
  opacity: 0.85;
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.hero-foto { display: none; }
.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 2.5px;
  font-size: 14.5px;
  color: #a9d6a9;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: 34px;
  line-height: 1.2;
  font-weight: bold;
  max-width: 720px;
  margin-bottom: 20px;
}
.hero p {
  font-size: 20px;
  max-width: 620px;
  color: #d9e8d9;
  margin-bottom: 32px;
}
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  text-decoration: none;
  font-size: 17px;
  font-weight: bold;
  padding: 13px 26px;
  border-radius: 4px;
  transition: transform .1s, background .15s, color .15s;
}
.btn-primary { background: #fff; color: var(--gruen); }
.btn-primary:hover { background: var(--gruen-tint); }
.btn-ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.6); }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

/* ---------- Sektionen (Startseite) ---------- */
section { padding: 72px 0; }
section.alt { background: var(--hell); }
section[id] { scroll-margin-top: 104px; }
#kontaktformular { scroll-margin-top: 104px; }

.eyebrow-dark {
  text-transform: uppercase;
  letter-spacing: 2.5px;
  font-size: 14.5px;
  color: var(--gruen-hell);
  margin-bottom: 12px;
  font-weight: bold;
}
h2 {
  font-size: 30px;
  color: var(--gruen);
  margin-bottom: 16px;
  line-height: 1.25;
}
.lead { font-size: 19px; color: var(--text-leise); max-width: 720px; margin-bottom: 44px; }

/* Leistungen */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.card {
  background: var(--weiss);
  border: 1px solid var(--linie);
  border-top: 4px solid var(--gruen);
  border-radius: 6px;
  padding: 34px 32px;
}
.card h3 { color: var(--gruen); font-size: 21px; margin-bottom: 14px; }
.card ul { list-style: none; margin-top: 6px; }
.card li { padding-left: 26px; position: relative; margin-bottom: 9px; font-size: 17.5px; }
.card li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 8px;
  background: var(--gruen-hell);
  border-radius: 50%;
}

/* Über uns / Merkmale */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 8px; }
.feature h3 { color: var(--gruen); font-size: 18px; margin-bottom: 8px; }
.feature p { font-size: 17px; color: var(--text-leise); }

/* Kontakt */
.kontakt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.kontakt-block p { margin-bottom: 4px; font-size: 17.5px; }
.kontakt-block .label { display: inline-block; min-width: 118px; color: var(--text-leise); }
.kontakt-block a { text-decoration: none; }
.kontakt-block a:hover { text-decoration: underline; }

/* E-Mail-Adresse als Grafik statt Klartext (Spamschutz) */
.email-grafik { height: 22px; width: auto; vertical-align: middle; }

/* ---------- Kontaktformular ---------- */
.kontakt-form { margin-top: 8px; }
.kontakt-form label {
  display: block;
  font-size: 16px;
  font-weight: bold;
  color: var(--text);
  margin: 14px 0 5px;
}
.kontakt-form input[type="text"],
.kontakt-form input[type="email"],
.kontakt-form input[type="tel"],
.kontakt-form textarea {
  width: 100%;
  padding: 11px 13px;
  font-family: inherit;
  font-size: 17px;
  color: var(--text);
  border: 1px solid var(--linie);
  border-radius: 4px;
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
}
.kontakt-form input:focus,
.kontakt-form textarea:focus {
  outline: none;
  border-color: var(--gruen);
  box-shadow: 0 0 0 3px rgba(10,77,10,0.12);
}
.kontakt-form textarea { resize: vertical; min-height: 120px; }

/* Honeypot: für Menschen komplett unsichtbar, aber im DOM vorhanden */
.hp-feld {
  position: absolute !important;
  left: -9999px !important;
  top: auto;
  width: 1px; height: 1px;
  overflow: hidden;
}

.dsgvo-zeile {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 18px 0 4px;
}
.dsgvo-zeile input { margin-top: 3px; flex-shrink: 0; }
.dsgvo-zeile label {
  margin: 0;
  font-weight: normal;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--text-leise);
}
.dsgvo-zeile a { color: var(--gruen); }

.pflicht-hinweis { font-size: 14.5px; color: var(--text-leise); margin: 6px 0 14px; }

.btn-form {
  background: var(--gruen);
  color: #fff;
  border: 0;
  cursor: pointer;
  font-size: 17px;
}
.btn-form:hover { background: var(--gruen-hell); }
.btn-form.wird-gesendet { opacity: .7; cursor: wait; pointer-events: none; }

.form-hinweis {
  padding: 12px 15px;
  border-radius: 4px;
  font-size: 16.5px;
  margin: 6px 0 14px;
  line-height: 1.5;
}
.form-hinweis.ok { background: var(--gruen-tint); border-left: 4px solid var(--gruen); color: var(--gruen); }
.form-hinweis.fehler { background: #fbeaea; border-left: 4px solid #b12a2a; color: #8a1f1f; }

/* ---------- Unterseiten (Impressum / Datenschutz) ---------- */
.seitenkopf {
  background: linear-gradient(160deg, var(--gruen) 0%, #063406 100%);
  color: #fff;
  padding: 54px 0 46px;
}
.seitenkopf .wrap { max-width: var(--max-text); }
.seitenkopf .eyebrow {
  text-transform: uppercase;
  letter-spacing: 2.5px;
  font-size: 14.5px;
  color: #a9d6a9;
  margin-bottom: 12px;
}
.seitenkopf h1 { font-size: 32px; }

main { padding: 56px 0 72px; }
main .wrap { max-width: var(--max-text); }
main a { text-decoration: none; }
main a:hover { text-decoration: underline; }
main h2 { color: var(--gruen); font-size: 18px; margin: 26px 0 8px; }
main h2:first-child { margin-top: 0; }
main h3 { color: var(--gruen-hell); font-size: 16.5px; margin: 20px 0 6px; }
main p { margin-bottom: 5px; font-size: 17.5px; }
main ul { margin: 0 0 14px 22px; }
main li { margin-bottom: 6px; font-size: 17.5px; }
.abstand { margin-bottom: 16px; }
.box {
  background: var(--gruen-tint);
  border-left: 4px solid var(--gruen);
  padding: 18px 20px;
  border-radius: 4px;
  margin: 18px 0;
  font-size: 17px;
}
.klein { font-size: 15px; color: var(--text-leise); line-height: 1.6; }

/* ---------- Footer ---------- */
footer {
  background: var(--gruen);
  color: #cfe3cf;
  padding: 40px 0 34px;
  font-size: 16px;
}
footer .wrap { max-width: var(--max); }
footer .foot-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.18);
  padding-bottom: 22px;
  margin-bottom: 20px;
}
footer .foot-brand { color: #fff; font-weight: bold; font-size: 18px; }
footer nav ul, footer ul { gap: 22px; }
footer nav a, footer a { color: #cfe3cf; border: 0; padding: 0; text-decoration: none; font-size: 16px; }
footer nav a:hover, footer a:hover { color: #fff; }
footer a.aktiv { color: #fff; font-weight: bold; text-decoration: underline; }
footer .copy { color: #a9c9a9; }

/* ---------- Responsiv ---------- */
@media (max-width: 800px) {
  .nav-toggle { display: block; }

  /* Startseiten-Menü */
  nav#hauptnav {
    position: absolute;
    top: 92px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--linie);
    display: none;
  }
  nav#hauptnav.offen { display: block; }
  nav#hauptnav ul { flex-direction: column; gap: 0; padding: 8px 24px 16px; }
  nav#hauptnav a { display: block; padding: 12px 0; border-bottom: 1px solid var(--linie); }

  /* Unterseiten-Menü */
  .nav-links {
    position: absolute;
    top: 92px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--linie);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    display: none;
  }
  .nav-links.offen { display: flex; }
  .nav-links a { display: block; padding: 12px 0; border-bottom: 1px solid var(--linie); }

  .hero h1 { font-size: 26px; }
  .hero { padding: 60px 0 54px; }
  .hero::after { display: none; }
  .hero-foto {
    display: block;
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: auto;
    pointer-events: none;
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 45%);
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 45%);
  }
  .cards, .features, .kontakt-grid { grid-template-columns: 1fr; }
  h2 { font-size: 25px; }

  /* Leistungen-Boxen: breiter als der Textblock, mit schmalem Innenabstand,
     damit der Text fast die volle Boxbreite ausnutzt */
  .cards { margin: 0 -16px; }
  .card { padding: 20px 14px; }
  .card li { padding-left: 20px; }
}

@media (max-width: 640px) {
  .seitenkopf h1 { font-size: 26px; }
  .brand img { height: 52px; }
}