:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1a1d21;
  --text-secondary: #5b6270;
  --border: #e2e4e9;
  --primary: #1d6fd6;
  --primary-text: #ffffff;
  --danger: #c0392b;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1e2126;
    --text: #eef0f3;
    --text-secondary: #9aa1ad;
    --border: #2c3038;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}
header.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
header.topbar h1 { font-size: 18px; margin: 0; }
header.topbar a, header.topbar button {
  font-size: 14px;
}
h1 { font-size: 24px; }
h2 { font-size: 16px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.04em; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}
.card-title { font-weight: 600; font-size: 16px; }
.card-sub { color: var(--text-secondary); font-size: 14px; margin-top: 2px; }
.row { display: flex; align-items: center; gap: 8px; }
.row.between { justify-content: space-between; }
.badge {
  display: inline-block;
  background: color-mix(in srgb, var(--primary) 15%, transparent);
  color: var(--primary);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
}
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 15px;
  margin-bottom: 10px;
}
button {
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
}
button.primary { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
button.danger { color: var(--danger); border-color: var(--danger); }
button:disabled { opacity: 0.5; cursor: default; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { color: var(--text-secondary); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.muted { color: var(--text-secondary); font-size: 14px; }
.error { color: var(--danger); font-size: 14px; margin: 8px 0; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.tabs button { border: none; border-radius: 0; background: none; padding: 10px 14px; border-bottom: 2px solid transparent; }
.tabs button.active { border-bottom-color: var(--primary); color: var(--primary); font-weight: 600; }
.hidden { display: none !important; }