:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #111827;
  --muted: #4b5563;
  --line: #c6ddd6;
  --card: #e2ede9;
  --accent: #004d40;
  --accent-fg: #ffffff;
  --warn: #92400e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #002a22;
    --fg: #e2ede9;
    --muted: #9cc3b8;
    --line: #0a6a5a;
    --card: #00382e;
    --accent: #e3d3a8;
    --accent-fg: #002a22;
    --warn: #f1e7d2;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, 'Segoe UI', Roboto, Inter, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}
.kart {
  max-width: 560px;
  margin: 32px auto;
  padding: 24px 16px 32px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
}
@media (max-width: 600px) { .kart { margin: 0; border-radius: 0; border-left: 0; border-right: 0; } }
.marka { margin: 0 0 8px; font-size: 13px; font-weight: 600; letter-spacing: 0.04em; color: var(--muted); }
h1 { margin: 0 0 8px; font-size: 20px; }
.aciklama, .not { margin: 0 0 12px; color: var(--muted); font-size: 14px; }
.durum { margin: 0 0 12px; font-size: 14px; font-weight: 600; }
.durum.uyari { color: var(--warn); }
.dugme {
  appearance: none;
  border: 0;
  border-radius: 8px;
  padding: 10px 16px;
  background: var(--accent);
  color: var(--accent-fg);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.dugme:disabled { opacity: 0.5; cursor: default; }
.dugme:focus-visible { outline: 2px solid var(--fg); outline-offset: 2px; }