/* ==========================================================================
   Quickmail Systems GmbH — Stylesheet
   Kein Framework, keine Abhaengigkeiten. Farben ueber Custom Properties.
   ========================================================================== */

:root {
  /* Bewusst nur helles Design — kein Dark Mode. */
  color-scheme: light;

  --petrol: #19677d;
  --petrol-dunkel: #114a5b;

  --bg: #ffffff;
  --bg-alt: #f4f7f8;
  --text: #17242a;
  --text-muted: #5c6b72;
  --border: #dde5e8;
  --akzent: var(--petrol);
  --akzent-text: #ffffff;

  --breite: 68rem;
  --breite-text: 44rem;
  --radius: 0.5rem;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--akzent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 3px solid var(--akzent);
  outline-offset: 2px;
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
}
h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}
h3 {
  font-size: 1.15rem;
}
h4 {
  font-size: 1rem;
  margin-bottom: 0.3em;
}

p {
  margin: 0 0 1rem;
}

/* --- Layout --------------------------------------------------------------- */

.wrap {
  width: 100%;
  max-width: var(--breite);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.wrap--text {
  max-width: var(--breite-text);
}

.section {
  padding-block: clamp(3rem, 7vw, 5rem);
}

.section--alt {
  background: var(--bg-alt);
}

.section__lead {
  max-width: var(--breite-text);
  color: var(--text-muted);
}

.prose {
  max-width: var(--breite-text);
}

.prose ul {
  padding-left: 1.2rem;
}

.prose li {
  margin-bottom: 0.35rem;
}

.muted {
  color: var(--text-muted);
}

.small {
  font-size: 0.875rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  position: static;
  display: inline-block;
  margin: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--akzent);
  color: var(--akzent-text);
  border-radius: var(--radius);
}

/* --- Header --------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  min-height: 4rem;
  padding-block: 0.5rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: inherit;
  text-decoration: none;
  font-weight: 600;
}

.logo__text {
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--akzent);
  text-decoration: underline;
}

/* --- Hero ----------------------------------------------------------------- */

.hero {
  padding-block: clamp(3.5rem, 9vw, 7rem);
  background:
    radial-gradient(circle at 15% 0%, color-mix(in srgb, var(--petrol) 14%, transparent), transparent 55%),
    var(--bg);
}

.hero__inner {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 54rem) {
  .hero__inner {
    grid-template-columns: 1.05fr 1fr;
    gap: 3.5rem;
  }
}

.hero__eyebrow {
  margin-bottom: 0.75rem;
  color: var(--akzent);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 34ch;
}

.hero__text {
  max-width: 55ch;
  font-size: 1.125rem;
  color: var(--text-muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font-weight: 500;
  text-decoration: none;
}

.btn:hover {
  border-color: var(--akzent);
  color: var(--akzent);
}

.btn--primary {
  background: var(--akzent);
  border-color: var(--akzent);
  color: var(--akzent-text);
}

.btn--primary:hover {
  background: var(--petrol-dunkel);
  border-color: var(--petrol-dunkel);
  color: #fff;
}

/* --- Bilder --------------------------------------------------------------- */

.bild {
  margin: 0;
}

.bild img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--bg-alt);
}

.bild--hero img {
  box-shadow: 0 1.5rem 3rem -1.5rem rgb(17 74 91 / 35%);
}

/* Vollbreites Trennband zwischen zwei Abschnitten */
.band {
  position: relative;
  overflow: hidden;
  height: clamp(7rem, 16vw, 12rem);
  background: var(--petrol-dunkel);
}

.band img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Leichter Markenschleier, damit beliebige Motive zum Petrol passen */
.band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgb(17 74 91 / 55%), rgb(25 103 125 / 20%));
}

/* Zwei Spalten: Text neben Bild */
.split {
  display: grid;
  gap: 2rem;
  align-items: start;
}

@media (min-width: 54rem) {
  .split {
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
  }
}

/* --- Kennzahlen ----------------------------------------------------------- */

.kennzahlen {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 3rem;
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
}

.kennzahlen li {
  display: flex;
  flex-direction: column;
}

.kennzahlen__wert {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--akzent);
  line-height: 1.1;
}

.kennzahlen__label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- Cards ---------------------------------------------------------------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.card {
  padding: 1.5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.card p {
  margin: 0;
  color: var(--text-muted);
}

/* --- Stellen -------------------------------------------------------------- */

.stellen {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.stelle details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-alt);
}

.stelle summary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  align-items: baseline;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
}

.stelle summary:hover .stelle__titel {
  color: var(--akzent);
}

.stelle__meta {
  font-weight: 400;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.stelle__body {
  padding: 0 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

.stelle__fakten {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.25rem 1.5rem;
  margin: 0 0 1.5rem;
  font-size: 0.95rem;
}

.stelle__fakten dt {
  color: var(--text-muted);
}

.stelle__fakten dd {
  margin: 0;
}

/* --- Definitionslisten (Impressum) --------------------------------------- */

.daten {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 1.5rem;
  margin: 0 0 2rem;
}

.daten dt {
  font-weight: 600;
  margin-top: 0.75rem;
}

.daten dd {
  margin: 0;
  color: var(--text-muted);
}

@media (min-width: 40rem) {
  .daten {
    grid-template-columns: max-content 1fr;
  }

  .daten dt,
  .daten dd {
    margin-top: 0.5rem;
  }
}

/* --- Kontakt / Adressen --------------------------------------------------- */

address,
.kontakt {
  font-style: normal;
}

.kontakt {
  margin-top: 2rem;
}

/* --- Footer --------------------------------------------------------------- */

.site-footer {
  padding-block: 2.5rem 1.5rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 3rem;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.site-footer__name {
  margin: 0 0 0.25rem;
  font-weight: 600;
}

.site-footer p {
  margin-bottom: 0;
}

.nav--footer {
  gap: 0.25rem 1rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}