/* Tabletten Tracker – ruhig, minimalistisch, mit leichtem Glas-Look wie in der App */

:root {
  --bg: #f4f8fa;
  --text: #0f1b24;
  --muted: #5b6b76;
  --line: rgba(15, 27, 36, 0.08);
  --glass: rgba(255, 255, 255, 0.62);
  --glass-border: rgba(255, 255, 255, 0.85);
  --accent: #0a7cff;
  --accent-soft: rgba(10, 124, 255, 0.1);
  --mint: #7fe0cf;
  --indigo: #9aa6ff;
  --lavender: #e3c9ff;
  --shadow: 0 10px 40px rgba(20, 40, 60, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #070b10;
    --text: #edf3f7;
    --muted: #93a3ae;
    --line: rgba(255, 255, 255, 0.08);
    --glass: rgba(26, 34, 44, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --accent: #4aa3ff;
    --accent-soft: rgba(74, 163, 255, 0.14);
    --mint: #1f6f66;
    --indigo: #2c3474;
    --lavender: #3b2c5a;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

/* Weicher Farbverlauf im Hintergrund */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 50% at 10% 0%, var(--mint) 0%, transparent 70%),
    radial-gradient(50% 45% at 95% 10%, var(--indigo) 0%, transparent 70%),
    radial-gradient(60% 50% at 80% 100%, var(--lavender) 0%, transparent 70%);
  opacity: 0.55;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }

/* Kopfzeile */
header.site {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(160%) blur(18px);
  -webkit-backdrop-filter: saturate(160%) blur(18px);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--line);
}
header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--text);
}
.brand img { width: 30px; height: 30px; border-radius: 8px; }
nav.site { display: flex; gap: 18px; font-size: 15px; }
nav.site a { color: var(--muted); }
nav.site a[aria-current="page"] { color: var(--text); font-weight: 600; }

/* Glas-Karten */
.card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: saturate(160%) blur(20px);
  -webkit-backdrop-filter: saturate(160%) blur(20px);
  padding: 24px;
}

/* Startseite */
.hero { text-align: center; padding: 72px 0 40px; }
.hero img.icon {
  width: 128px;
  height: 128px;
  border-radius: 28px;
  box-shadow: 0 18px 50px rgba(20, 40, 60, 0.18);
}
.hero h1 { font-size: clamp(34px, 6vw, 52px); line-height: 1.1; margin: 28px 0 12px; letter-spacing: -0.02em; }
.hero p.lead { font-size: 20px; color: var(--muted); max-width: 560px; margin: 0 auto; }

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  padding: 13px 26px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}
.button:hover { text-decoration: none; filter: brightness(1.05); }
.button.soon { background: var(--glass); color: var(--muted); border: 1px solid var(--glass-border); cursor: default; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 24px 0 48px;
}
.feature h3 { margin: 10px 0 6px; font-size: 18px; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; }
.feature .symbol {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 20px;
}

.notice {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 48px;
  color: var(--muted);
  font-size: 15px;
}
.notice strong { color: var(--text); }

/* Textseiten */
main.doc { padding-top: 48px; padding-bottom: 64px; }
main.doc h1 { font-size: clamp(28px, 7vw, 40px); letter-spacing: -0.02em; margin: 0 0 6px; overflow-wrap: anywhere; hyphens: auto; }
main.doc .meta { color: var(--muted); margin: 0 0 28px; }
main.doc h2 { font-size: 21px; margin: 32px 0 8px; }
main.doc p, main.doc li { color: var(--text); }
main.doc ul { padding-left: 22px; }
main.doc li { margin: 4px 0; }
.placeholder {
  background: rgba(255, 196, 0, 0.18);
  border-radius: 6px;
  padding: 1px 6px;
}

/* FAQ */
details {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
details:last-of-type { border-bottom: none; }
summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--muted); font-weight: 400; }
details[open] summary::after { content: "–"; }
details p { margin: 10px 0 0; color: var(--muted); }

/* Fußzeile */
footer.site {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 14px;
}
footer.site .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
footer.site nav { display: flex; gap: 18px; }
footer.site a { color: var(--muted); }

@media (max-width: 560px) {
  nav.site { gap: 12px; font-size: 14px; }
  .brand span { display: none; }
  .hero { padding-top: 48px; }
}