:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-hover: #1c2129;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --primary: #58a6ff;
  --primary-hover: #79b8ff;
  --danger: #f85149;
  --danger-hover: #ff6e6a;
  --success: #3fb950;
  --radius: 6px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

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

.container { max-width: 800px; margin: 0 auto; padding: 0 16px; }

.nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  margin-bottom: 32px;
}
.nav-inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand { font-weight: 600; font-size: 16px; color: var(--text); }
.nav-brand:hover { color: var(--text); }
.nav-links { display: flex; gap: 20px; }
.nav-links a { color: var(--text-muted); font-size: 14px; }
.nav-links a:hover { color: var(--text); }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.page-header h1 { font-size: 24px; font-weight: 600; }

.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  text-align: center;
  line-height: 1.5;
  font-family: inherit;
}
.btn:hover { background: var(--surface-hover); color: var(--text); }
.btn-primary { background: #1f6feb; border-color: #1f6feb; color: #fff; }
.btn-primary:hover { background: #388bfd; border-color: #388bfd; color: #fff; }
.btn-danger { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.card-title { font-weight: 600; font-size: 16px; }
.card-id { color: var(--text-muted); font-size: 13px; font-family: monospace; }
.card-body { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 12px; }
.card-stat .label { color: var(--text-muted); font-size: 12px; display: block; }
.card-stat span:last-child { font-size: 14px; }
.card-actions { display: flex; gap: 8px; }
.card-closed { opacity: 0.5; }
.card-badge { font-size: 12px; color: var(--text-muted); }

table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
th { color: var(--text-muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }
tr:hover td { background: var(--surface); }

.form { max-width: 480px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  margin-bottom: 4px;
  font-size: 14px;
  color: var(--text-muted);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 8px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.2);
}
.form-group textarea { min-height: 80px; resize: vertical; }
.form-actions { display: flex; gap: 8px; margin-top: 24px; }
.form-error { color: var(--danger); font-size: 13px; margin-top: 8px; display: none; }

.calc-display {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  margin-top: 16px;
}
.calc-row { display: flex; justify-content: space-between; margin-bottom: 4px; font-size: 14px; }
.calc-row .label { color: var(--text-muted); }
.calc-row .value { font-family: monospace; }

.body-diagram-wrap { margin-top: 8px; }
.body-svg {
  width: 200px;
  height: 480px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: crosshair;
  background: var(--bg);
}
.body-hint { color: var(--text-muted); font-size: 13px; margin-top: 4px; }

.empty-state { text-align: center; padding: 40px; color: var(--text-muted); }

.auth-page { max-width: 360px; margin: 80px auto 0; }
.auth-page h1 { text-align: center; margin-bottom: 24px; }

.filter-bar { display: flex; gap: 12px; align-items: center; margin-bottom: 16px; }
.filter-bar select {
  padding: 6px 10px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

/* Expandable vial panel */
.card-expand-btn { margin-left: auto; }
.card-panel { margin-top: 12px; border-top: 1px solid var(--border); padding-top: 12px; }
.card-panel-section { margin-bottom: 16px; }
.card-panel-section:last-child { margin-bottom: 0; }
.card-panel-section h3 { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
.panel-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.panel-header h3 { margin-bottom: 0; }
.pk-range {
  padding: 2px 6px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 12px;
}
.vial-pk-canvas { width: 100%; height: 150px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.stats-grid .label { font-size: 12px; color: var(--text-muted); display: block; }
.stat-value { font-size: 16px; font-family: monospace; }
.mini-table { width: 100%; }
.mini-table td { padding: 4px 8px; font-size: 13px; }
.date-header td { font-weight: 600; color: var(--text-muted); padding-top: 16px; font-size: 13px; border-bottom: none; }

/* Panel tabs */
.panel-tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.panel-tab { padding: 6px 12px; font-size: 12px; cursor: pointer; border-bottom: 2px solid transparent; color: var(--text-muted); background: none; border-top: none; border-left: none; border-right: none; font-family: inherit; }
.panel-tab:hover { color: var(--text); }
.panel-tab.active { color: var(--text); border-bottom-color: var(--primary); }

/* Graph legend */
.pk-legend { display: flex; gap: 12px; margin-top: 6px; font-size: 11px; color: var(--text-muted); }
.pk-legend-item { display: flex; align-items: center; gap: 4px; }
.pk-legend-swatch { width: 12px; height: 3px; border-radius: 1px; }

/* View transitions */
@view-transition { navigation: auto; }
::view-transition-old(root),
::view-transition-new(root) { animation-duration: 72ms; }