* { box-sizing: border-box; }
:root {
  --bg: #f7f9fc;
  --card: #ffffff;
  --text: #222;
  --muted: #667085;
  --primary: #6fb1ff;
  --primary-600: #4a90e2;
  --success: #d4edda;
  --warn: #fff3cd;
  --danger: #f8d7da;
  --border: #e5e7eb;
}
:root.dark {
  --bg: #0f172a;
  --card: #0b1220;
  --text: #e5e7eb;
  --muted: #a3adc2;
  --primary: #6fb1ff;
  --primary-600: #93c5fd;
  --success: #0a2f18;
  --warn: #3a2d0b;
  --danger: #3c1212;
  --border: #1f2937;
}
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Sarabun', system-ui, -apple-system, Segoe UI, Roboto, 'Noto Sans Thai', sans-serif;
  background: var(--bg);
  color: var(--text);
}
.app-header {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-600) 100%);
  color: white;
}
.app-header h1 { margin: 0; font-size: 1.15rem; font-weight: 700; letter-spacing: .2px; }
.app-header .brand { font-weight: 400; opacity: .9; }
.container { max-width: 980px; margin: 16px auto; padding: 0 12px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  margin-bottom: 14px;
  box-shadow: 0 3px 16px rgba(0,0,0,.04);
}
h2 { margin: 0 0 8px; font-size: 1.1rem; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 640px){ .grid2 { grid-template-columns: 1fr; } }
label { font-size: .95rem; color: var(--muted); display: grid; gap: 6px; }
input, select, button {
  font: inherit;
}
input, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: transparent;
  color: var(--text);
}
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { border: 1px solid var(--border); padding: 10px; vertical-align: top; }
th { background: #dfe9f3; color: #222; }
.result { padding: 10px; border-radius: 12px; background: #eef6ff; border: 1px dashed var(--primary); }
.badge { display: inline-block; margin-top: 8px; padding: 6px 10px; border-radius: 999px; background: #eef6ff; border: 1px solid var(--primary); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.btn {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  min-height: 44px;
}
.btn:hover { filter: brightness(.95); }
.btn.outline {
  background: transparent; color: var(--primary); border: 1px solid var(--primary);
}
.btn.ghost {
  background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.6);
}
.note {
  background: rgba(111,177,255,.08);
  border: 1px solid rgba(111,177,255,.35);
  border-radius: 12px;
  padding: 10px 12px;
  color: var(--text);
}
.notes-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 640px){ .notes-grid { grid-template-columns: 1fr; } }

/* FAB */
.fab {
  position: fixed; right: 16px; bottom: 16px; z-index: 20;
}
.fab > button {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--primary); color: #fff; border: none; font-size: 22px; cursor: pointer;
  box-shadow: 0 8px 24px rgba(0,0,0,.15);
}
.fab-menu {
  position: absolute; right: 0; bottom: 64px; display: none; flex-direction: column; gap: 8px;
}
.fab-menu button {
  min-width: 140px; text-align: left; padding: 10px 12px; border-radius: 12px; border: 1px solid var(--border); background: var(--card); color: var(--text);
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
}

/* Severity chips */
.severity { font-weight: 700; padding: 4px 10px; border-radius: 999px; display: inline-block; }
.green { background: #d4edda; color: #155724; }
.orange { background: #fff3cd; color: #856404; }
.red { background: #f8d7da; color: #721c24; }
.darkred { background: #d6d8db; color: #842029; }

@media print {
  .fab, .app-header, .actions { display: none !important; }
  body { background: #fff; }
  .card { box-shadow: none; border-color: #bbb; }
}