:root {
  --bg: #0b0c10;
  --bg-2: #13151c;
  --card: #181b23;
  --line: #262a35;
  --text: #e8e9ee;
  --muted: #9aa0ae;
  --accent: #3b82f6;
  --accent-2: #6366f1;
  --radius: 14px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-x: hidden;
}
a { color: #8ab4ff; text-decoration: none; }
a:hover { text-decoration: underline; }
code {
  font: 0.85em ui-monospace, "Cascadia Mono", Consolas, monospace;
  background: #0f1117; border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px;
  overflow-wrap: anywhere;
}
h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); margin: 0 0 1.5rem; letter-spacing: -0.01em; }
h3 { margin: 0 0 0.4rem; font-size: 1.1rem; }

/* Kopfzeile */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px max(16px, calc((100vw - 1180px) / 2));
  background: rgba(11, 12, 16, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-size: 1.2rem; letter-spacing: 0.02em; }
.brand:hover { text-decoration: none; }
.brand b, .foot-brand b { font-weight: 700; }
.brand span { font-weight: 300; }
nav { display: flex; align-items: center; gap: 22px; }
nav a { color: var(--muted); font-size: 0.95rem; }
nav a:hover { color: var(--text); text-decoration: none; }
nav .gh { display: flex; }

main > section { padding: 72px max(16px, calc((100vw - 1180px) / 2)); }

/* Einstieg */
.hero {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; align-items: center;
  background:
    radial-gradient(900px 500px at 85% 0%, rgba(99, 102, 241, 0.18), transparent 60%),
    radial-gradient(700px 400px at 0% 100%, rgba(59, 130, 246, 0.12), transparent 60%);
}
.app-icon { display: block; margin-bottom: 18px; }
.hero h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); line-height: 1.05; margin: 0; letter-spacing: -0.02em; }
.claim {
  font-size: clamp(1.15rem, 2vw, 1.4rem); margin: 10px 0 18px; font-weight: 600;
  background: linear-gradient(90deg, var(--accent), var(--accent-2) 60%, #a78bfa);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { color: #c9ccd6; margin: 0 0 26px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.meta { color: var(--muted); font-size: 0.9rem; margin-top: 18px; }
.hero-shot { margin: 0; }
.hero-shot img, .shots img {
  display: block; width: 100%; height: auto;
  border-radius: var(--radius); border: 1px solid var(--line);
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.02);
}

/* Schaltflächen */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 20px; border-radius: 10px; font-weight: 600; font-size: 0.95rem;
  color: var(--text); background: var(--card); border: 1px solid var(--line);
  transition: transform 0.15s, border-color 0.15s, background 0.15s;
}
.btn:hover { text-decoration: none; border-color: #3a4050; transform: translateY(-1px); }
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border-color: transparent; color: #fff; }
.btn.primary:hover { filter: brightness(1.1); }

/* Funktionen */
.features { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.grid article { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.grid article h3::before {
  content: ""; display: block; width: 28px; height: 4px; border-radius: 2px; margin-bottom: 14px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.grid p { margin: 0; color: #b9bdc9; font-size: 0.95rem; }

/* Tools nach Service-Bereichen (aufklappbar, Inhalt aus scripts/build_site.py) */
.tools .sub { color: var(--muted); margin: -0.8rem 0 1.4rem; }
.cats { display: flex; flex-direction: column; gap: 10px; }
.cat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.cat summary {
  display: flex; align-items: center; gap: 12px; padding: 16px 20px;
  cursor: pointer; list-style: none; font-weight: 600;
}
.cat summary::-webkit-details-marker { display: none; }
.cat summary::before {
  content: ""; width: 8px; height: 8px; flex: none;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted);
  transform: rotate(-45deg); transition: transform 0.15s;
}
.cat[open] summary::before { transform: rotate(45deg); }
.cat summary:hover { background: #1d212b; }
.cat summary small { margin-left: auto; color: var(--muted); font-weight: 400; font-size: 0.85rem; }
.cat ul { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.cat li + li { border-top: 1px solid var(--line); }
.cat li a {
  display: grid; grid-template-columns: 260px minmax(0, 1fr) auto; gap: 16px; align-items: baseline;
  padding: 12px 20px 12px 40px; color: var(--text);
}
.cat li a:hover { text-decoration: none; background: #1d212b; }
.cat li a:hover b { color: #8ab4ff; }
.cat li span { color: #b9bdc9; font-size: 0.95rem; }
.cat li em { color: var(--muted); font-style: normal; font-size: 0.85rem; white-space: nowrap; }

/* Bilder */
.gallery { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.shots { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.shots figure { margin: 0; }
.shots figcaption { color: var(--muted); font-size: 0.9rem; margin-top: 12px; }

/* Download */
.download .sub { color: var(--muted); margin: -0.8rem 0 1.6rem; }
.dl-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.dl-card {
  display: flex; flex-direction: column; gap: 10px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px;
}
.dl-card h3 { margin-bottom: 6px; }
.hint { color: var(--muted); font-size: 0.88rem; margin: 6px 0 0; }
.more { margin-top: 22px; color: var(--muted); }

/* Fußzeile */
footer {
  border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem;
  padding: 32px max(16px, calc((100vw - 1180px) / 2)); text-align: center;
}
footer p { margin: 6px 0; }
.foot-brand { display: inline-flex; align-items: center; gap: 8px; color: var(--text); margin-bottom: 8px; }
.foot-brand span { font-weight: 300; }

@media (max-width: 900px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .shots, .dl-grid { grid-template-columns: minmax(0, 1fr); }
  .cat li a { grid-template-columns: minmax(0, 1fr); gap: 2px; padding-left: 20px; }
}
@media (max-width: 600px) {
  main > section { padding-top: 48px; padding-bottom: 48px; }
  nav { gap: 14px; }
  nav a:not(.gh):not([href="#download"]) { display: none; }
  .grid { grid-template-columns: minmax(0, 1fr); }
}