/* Shared layout/styles (E1). Mobile first (360 px). Pages add their own CSS file; keep tokens here. */
:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #1d2433;
  --muted: #5c6577;
  --line: #dde1e8;
  --brand: #0f6e8c;
  --brand-ink: #ffffff;
  --accent: #c2410c;     /* Region 4 highlight */
  --ok: #15803d;
  --warn: #b45309;
  --bad: #b91c1c;
  --radius: 10px;
  --gap: 16px;
  font-family: 'Sarabun', system-ui, -apple-system, 'Segoe UI', sans-serif;
  color-scheme: light;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 16px; line-height: 1.55; }
a { color: var(--brand); }
.app-header { background: var(--brand); color: var(--brand-ink); }
.app-header .inner { max-width: 1200px; margin: 0 auto; padding: 10px var(--gap); display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.app-header .title { font-weight: 700; font-size: 1.05rem; color: inherit; text-decoration: none; margin-right: auto; }
.app-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.app-nav a { color: var(--brand-ink); text-decoration: none; padding: 6px 10px; border-radius: 6px; font-size: .95rem; }
.app-nav a[aria-current='page'], .app-nav a:hover { background: rgba(255, 255, 255, .18); }
.app-user { font-size: .9rem; opacity: .95; }
main { max-width: 1200px; margin: 0 auto; padding: var(--gap); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: var(--gap); margin-bottom: var(--gap); }
.muted { color: var(--muted); }
.note { font-size: .88rem; color: var(--muted); }
.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--brand); background: var(--brand); color: var(--brand-ink); border-radius: 8px; padding: 8px 14px; font: inherit; cursor: pointer; text-decoration: none; }
.btn.secondary { background: transparent; color: var(--brand); }
.btn.danger { background: var(--bad); border-color: var(--bad); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
table.data { width: 100%; border-collapse: collapse; font-size: .95rem; }
table.data th, table.data td { padding: 6px 8px; border-bottom: 1px solid var(--line); text-align: left; }
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: var(--gap); overflow-x: auto; }
.tabs button { border: 0; background: none; padding: 8px 14px; font: inherit; cursor: pointer; border-bottom: 3px solid transparent; }
.tabs button[aria-selected='true'] { border-bottom-color: var(--brand); font-weight: 600; }
.r4 { color: var(--accent); font-weight: 600; }
.badge { display: inline-block; min-width: 1.4em; padding: 0 6px; border-radius: 999px; background: var(--bad); color: #fff; font-size: .8rem; text-align: center; }
.float-btns { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 10px; z-index: 50; }
.float-btns button, .float-btns a { width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--line); background: var(--surface); box-shadow: 0 2px 8px rgba(0, 0, 0, .15); font-size: 1.3rem; cursor: pointer; display: grid; place-items: center; text-decoration: none; }
label { display: block; font-weight: 600; margin: 10px 0 4px; }
input, select, textarea { font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; width: 100%; max-width: 480px; background: #fff; }
.field-error { color: var(--bad); font-size: .88rem; }
.hidden { display: none !important; }
@media (max-width: 600px) {
  .app-header .title { font-size: .98rem; }
  main { padding: 12px; }
}

/* E2a (additive): auth/consent/request/admin forms */
.card.narrow { max-width: 560px; }
.card.readable { max-width: 760px; }
.pdpa-text { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 16px; max-height: 50vh; overflow-y: auto; }
.pdpa-text ol { padding-left: 1.4em; }
label.check { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; }
label.check input { width: auto; margin-top: 5px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0 var(--gap); align-items: end; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.filters label { margin: 0; }
.filters input, .filters select { width: auto; }
.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.row-actions .btn { padding: 4px 10px; font-size: .9rem; }
.status-pending { color: var(--warn); font-weight: 600; }
.status-disabled { color: var(--bad); }
.status-invited { color: var(--muted); }
dialog.card { max-width: 640px; width: calc(100% - 32px); }
.detail-json { font-family: ui-monospace, monospace; font-size: .82rem; word-break: break-word; }
.dev-users { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }

/* E3a (additive): reveal / export / purge */
tr.l3-shown td.l3m, .l3-panel { background: #fff4d6; }
.l3-sub { display: block; font-size: .82rem; color: var(--muted); }
.l3-panel { border: 1px dashed var(--warn); border-radius: 8px; padding: 10px 12px; margin-bottom: 10px; }
.l3-panel dl { display: grid; grid-template-columns: max-content 1fr; gap: 2px 12px; margin: 6px 0 0; }
.l3-panel dt { color: var(--muted); }
.l3-panel dd { margin: 0; font-family: ui-monospace, Menlo, monospace; word-break: break-all; }
.toast { position: fixed; left: 50%; bottom: 84px; transform: translateX(-50%); z-index: 60; background: #1d2433; color: #fff; padding: 10px 16px; border-radius: 8px; max-width: calc(100% - 32px); box-shadow: 0 2px 10px rgba(0, 0, 0, .25); }
.export-form h2 { margin-top: 0; }
.purge-preview { font-size: 1.05rem; }
/* E3b (additive): feedback widget + list */
dialog.fb-dialog { max-width: 520px; }
dialog.fb-dialog textarea { max-width: 100%; }
.fb-item { border-bottom: 1px solid var(--line); padding: 10px 0; }
.fb-item .meta { font-size: .85rem; color: var(--muted); }
.fb-item .reply { margin: 6px 0 0 14px; padding-left: 10px; border-left: 3px solid var(--brand); }
.fb-item .msg-text { white-space: pre-wrap; word-break: break-word; }
.status-open { color: var(--warn); font-weight: 600; } .status-in_progress { color: var(--brand); font-weight: 600; } .status-done { color: var(--ok); }

/* D57 /report (additive, orchestrator) */
.stack { display: flex; flex-direction: column; gap: .4rem; max-width: 36rem; }
.stack button { align-self: flex-start; margin-top: .5rem; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* F1 (additive): /practice sandbox bar + form warning (D63, D60) */
.sandbox-bar { position: sticky; top: 0; z-index: 40; display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; justify-content: center; padding: 8px var(--gap); background: #ea580c; color: #fff; font-weight: 700; text-align: center; }
.sandbox-bar .btn.secondary { color: #fff; border-color: #fff; padding: 4px 12px; font-weight: 600; }
body[data-sandbox='1'] { box-shadow: inset 0 0 0 4px #ea580c; min-height: 100vh; }
.sandbox-warn { border: 1px dashed #ea580c; background: #fff7ed; border-radius: 8px; padding: 8px 12px; margin-bottom: 8px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.sandbox-warn p { margin: 0; flex: 1 1 220px; color: #9a3412; font-weight: 600; }