/* esperta GmbH – statische Website, zweisprachig (en / de)
   Keine externen Fonts, kein CDN, kein Tracking. */

:root {
  --text:        #1c2733;
  --text-soft:   #55616e;
  --line:        #d9dee3;
  --bg:          #ffffff;
  --bg-alt:      #f2f5f7;
  --accent:      #0f4c75;
  --maxw:        1100px;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Helvetica Neue", Arial, "Liberation Sans", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

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

a { color: var(--accent); }
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Kopfbereich ---------- */

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.head-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  padding-top: 18px;
  padding-bottom: 18px;
}

.logo img { display: block; width: 240px; height: auto; }

.head-right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
}

nav.main ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
  margin: 0;
  padding: 0;
}

nav.main a {
  text-decoration: none;
  color: var(--text-soft);
  font-size: 15px;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}

nav.main a:hover { color: var(--text); }
nav.main a[aria-current="page"] {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.langswitch {
  font-size: 14px;
  text-decoration: none;
  color: var(--text-soft);
  border: 1px solid var(--line);
  padding: 4px 12px;
  white-space: nowrap;
}

.langswitch:hover { color: var(--text); border-color: var(--text-soft); }

/* ---------- Inhalt ---------- */

main { padding: 56px 0 72px; }

h1 {
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.18;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 28px;
  max-width: 20ch;
}

h2 {
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 600;
  line-height: 1.3;
  margin: 44px 0 14px;
}

h3 { font-size: 20px; font-weight: 600; margin: 32px 0 10px; }

p, li { max-width: 72ch; }
p { margin: 0 0 18px; }

.lead { font-size: 19px; color: var(--text-soft); max-width: 62ch; }

/* Hero der Startseite */

.hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 64px;
}

.hero img { width: 100%; height: auto; display: block; }

.hero-key { width: 150px; height: auto; display: block; margin: 0 0 24px; }

/* Zwei-Spalten-Block Text + Bild */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
  padding: 44px 0;
  border-top: 1px solid var(--line);
}

.split img { width: 100%; height: auto; display: block; }
.split h2 { margin-top: 0; }
.split.plain { border-top: none; padding-top: 0; }

/* Drei Karten */

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding: 48px 0 8px;
  border-top: 1px solid var(--line);
}

.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  margin-bottom: 16px;
}

.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p { font-size: 16px; color: var(--text-soft); margin: 0; }

/* Hervorgehobener Block */

.panel { background: var(--bg-alt); padding: 36px 40px; margin: 56px 0; }
.panel > :last-child { margin-bottom: 0; }
.panel h2 { margin-top: 0; }

/* Kundenstimme */

blockquote.quote {
  border-left: 3px solid var(--accent);
  margin: 0;
  padding: 6px 0 6px 26px;
  font-size: 19px;
  max-width: 70ch;
}

blockquote.quote + blockquote.quote { margin-top: 30px; }

blockquote.quote cite {
  display: block;
  margin-top: 14px;
  font-size: 15px;
  font-style: normal;
  color: var(--text-soft);
}

/* Buttons */

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 12px 26px;
  font-size: 16px;
}

.btn:hover { background: #0b3a5a; }

/* Kontaktdaten */

.contact-data { font-size: 19px; line-height: 1.9; margin-bottom: 32px; }
.contact-data a { text-decoration: none; }
.contact-data a:hover { text-decoration: underline; }

address.plain { font-style: normal; font-size: 19px; line-height: 1.9; }

/* Rechtstexte */

.legal { max-width: 76ch; }
.legal h2 { font-size: 22px; margin-top: 40px; }
.legal h3 { font-size: 18px; margin-top: 28px; }
.legal h4 { font-size: 17px; margin: 22px 0 8px; }
.legal p, .legal li { font-size: 16px; }
.legal ul { padding-left: 22px; }
.legal .caps { font-size: 15px; color: var(--text-soft); }

.linklist { list-style: none; padding: 0; }
.linklist li { margin-bottom: 10px; }

img.wide { width: 100%; height: auto; display: block; margin: 40px 0; }

/* ---------- Fußbereich ---------- */

footer.site {
  border-top: 1px solid var(--line);
  padding: 30px 0 44px;
  color: var(--text-soft);
  font-size: 15px;
}

.foot-inner { display: flex; flex-wrap: wrap; gap: 12px 26px; justify-content: space-between; }
footer.site a { color: var(--text-soft); }

/* ---------- Mobil ---------- */

/* Reserve, damit die Navigation auch bei knapper Breite einzeilig bleibt */
@media (max-width: 1150px) {
  nav.main ul { gap: 4px 18px; }
  nav.main a { font-size: 14.5px; }
}

/* Tablet hochkant und schmale Laptops */
@media (max-width: 1000px) {
  .cards { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .hero, .split { gap: 32px; }
  nav.main ul { gap: 4px 16px; }
}

/* Tablet quer zu Smartphone */
@media (max-width: 860px) {
  .hero, .split, .cards { grid-template-columns: 1fr; gap: 28px; }
  .split { padding: 32px 0; }
  .panel { padding: 26px 22px; }
  main { padding: 36px 0 52px; }
  .head-inner { padding-bottom: 12px; }
  .head-right { width: 100%; justify-content: space-between; align-items: flex-start; }
  .card img { height: 220px; }
  h1 { max-width: none; }
}

/* Smartphone */
@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 18px; }
  .logo img { width: 200px; }
  nav.main ul { gap: 2px 14px; }
  nav.main a { font-size: 14px; padding: 6px 0; }
  .langswitch { font-size: 13px; padding: 5px 10px; }
  .hero { margin-bottom: 40px; }
  .hero-key { width: 110px; margin-bottom: 18px; }
  .panel { padding: 22px 18px; margin: 36px 0; }
  blockquote.quote { padding-left: 18px; font-size: 17px; }
  .lead { font-size: 17px; }
  .btn { display: block; text-align: center; padding: 14px 20px; }
  .card img { height: 190px; }
  .legal { max-width: none; }
}

/* Sehr schmale Geraete */
@media (max-width: 380px) {
  .logo img { width: 170px; }
  .wrap { padding: 0 14px; }
}

/* Lange URLs und Adressen nicht ueber den Rand laufen lassen */
a, address, .contact-data { overflow-wrap: anywhere; }

/* Druckansicht */
@media print {
  header.site nav.main, .langswitch, footer.site { display: none; }
  body { font-size: 11pt; color: #000; }
  a::after { content: " (" attr(href) ")"; font-size: 9pt; word-break: break-all; }
  a[href^="#"]::after { content: ""; }
}