:root {
  --bg-1: #f1f5f9;
  --bg-2: #e2e8f0;
  --bg-3: #1e3a8a;
  --ink: #0f172a;
  --ink-soft: #64748b;
  --ink-on-dark: #f1f5f9;
  --paper: #ffffff;
  --line: #cbd5e1;
  --border-strong: #94a3b8;
  --line-dark: #2563eb;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: linear-gradient(160deg, var(--bg-1) 0%, var(--bg-2) 60%, #cbd5e1 100%);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 20px 64px;
}

/* Gleiche dunkle "Toolbar"-Kopfleiste wie die drei Apps - direkter
   visueller Anschluss: man landet auf einer Seite mit derselben dunklen
   Leiste, die einen gleich danach in einer der Apps wiedererwartet. */
.toolbar {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  background: var(--bg-3);
  border-bottom: 4px solid var(--line-dark);
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.35);
  margin: 0 -20px;
}

.toolbar h1 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent-light);
  letter-spacing: -0.01em;
}

.page-subtitle {
  margin: 20px 0 32px;
  color: var(--ink-soft);
  font-size: 1rem;
  text-align: center;
}

.grid {
  width: 100%;
  max-width: 900px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 2px solid var(--line);
  border-top: 6px solid var(--accent);
  border-radius: 18px;
  overflow: hidden;
  text-decoration: none;
  color: var(--ink);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.15);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card-accent-1 { border-top-color: #d97706; }
.card-accent-2 { border-top-color: #0284c7; }
.card-accent-3 { border-top-color: #0d9488; }

.card:hover,
.card:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.22);
}

.card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.card:active {
  transform: translateY(-1px);
}

.card-thumb {
  display: block;
  aspect-ratio: 3 / 2;
  background: var(--bg-1);
  border-bottom: 2px solid var(--line);
  overflow: hidden;
}

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}

.card-title {
  padding: 16px 20px;
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
}

.page-footer {
  margin-top: 48px;
  font-size: 0.8rem;
}

.page-footer a {
  color: var(--ink-soft);
  text-decoration: none;
}

.page-footer a:hover { text-decoration: underline; }

@media (max-width: 480px) {
  .toolbar h1 { font-size: 1.4rem; }
}