:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1c2330;
  --muted: #667085;
  --border: #e3e6eb;
  --accent: #4b3fd1;
  --accent-text: #ffffff;
  --danger: #c0362c;
  --ok: #1f7a4d;
  --warn: #9a6200;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12151b;
    --card: #1b1f27;
    --text: #e6e8ec;
    --muted: #98a2b3;
    --border: #2c323d;
    --accent: #8b80ff;
    --accent-text: #0e0f14;
    --danger: #ff7b70;
    --ok: #5fd39a;
    --warn: #f0b85a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { overflow-x: hidden; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
code, pre { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 0.9em; }
h1, h2, h3 { margin: 0 0 0.6rem; line-height: 1.25; }
h1 { font-size: 1.35rem; } h2 { font-size: 1.1rem; } h3 { font-size: 0.98rem; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.error { color: var(--danger); }

.topbar { display: flex; gap: 0.75rem 1rem; align-items: center; flex-wrap: wrap; padding: 0.6rem 16px; background: var(--card); border-bottom: 1px solid var(--border); }
.topbar nav { display: flex; gap: 0.15rem; flex-wrap: wrap; flex: 1; }
.topbar nav a { color: var(--muted); text-decoration: none; padding: 0.35rem 0.6rem; border-radius: 6px; }
.topbar nav a.active { background: var(--bg); color: var(--text); font-weight: 600; }

main { padding: 16px; max-width: 1320px; margin: 0 auto; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 1rem; margin-bottom: 1rem; min-width: 0; }
.narrow { max-width: 620px; }

input, select, textarea, button { font: inherit; color: inherit; }
input, select, textarea { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 0.42rem 0.6rem; max-width: 100%; }
textarea { width: 100%; min-height: 6rem; resize: vertical; }
textarea.body { min-height: 16rem; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
button { cursor: pointer; background: var(--accent); color: var(--accent-text); border: 0; border-radius: 6px; padding: 0.42rem 0.9rem; }
button.secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
button.danger { background: var(--danger); color: #fff; }
button.link { background: none; color: var(--muted); padding: 0; }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.toolbar { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; margin-bottom: 0.75rem; }
.toolbar input[type=search] { flex: 1 1 14rem; }
.spacer { flex: 1; }

.grid-form { display: grid; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); gap: 0.6rem 0.9rem; }
.grid-form label, .field { display: flex; flex-direction: column; gap: 0.2rem; color: var(--muted); font-size: 0.85rem; }
.grid-form .wide { grid-column: 1 / -1; }
.grid-form input, .grid-form select, .grid-form textarea { color: var(--text); font-size: 0.95rem; }
.field-error { color: var(--danger); font-size: 0.8rem; }

.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(10.5rem, 1fr)); gap: 0.75rem; margin-bottom: 1rem; }
.tile { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 0.7rem 0.9rem; }
.tile b { display: block; font-size: 1.45rem; font-variant-numeric: tabular-nums; }
.tile span { color: var(--muted); font-size: 0.85rem; }

.flash { position: sticky; top: 0; z-index: 5; margin: 0; padding: 0.6rem 16px; background: var(--card); border-bottom: 1px solid var(--border); }
.flash.err { color: var(--danger); border-bottom-color: var(--danger); }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 1rem; align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: minmax(0, 1fr); } }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: 0.45rem 0.5rem; border-bottom: 1px solid var(--border); vertical-align: top; overflow-wrap: anywhere; }
.table th { color: var(--muted); font-weight: 500; font-size: 0.82rem; white-space: nowrap; }
.table tbody tr.clickable { cursor: pointer; }
.table tbody tr.clickable:hover, .table tbody tr.selected { background: var(--bg); }
.table td.num { font-variant-numeric: tabular-nums; text-align: right; }
.pager { display: flex; gap: 0.5rem; align-items: center; justify-content: flex-end; margin-top: 0.75rem; }

.badge { display: inline-block; padding: 0.02rem 0.5rem; border-radius: 999px; font-size: 0.78rem; border: 1px solid var(--border); white-space: nowrap; }
.badge.ok { color: var(--ok); border-color: currentColor; }
.badge.info { color: var(--accent); border-color: currentColor; }
.badge.warn { color: var(--warn); border-color: currentColor; }
.badge.bad { color: var(--danger); border-color: currentColor; }

dl.kv { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 0.25rem 0.9rem; margin: 0.5rem 0 1rem; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; overflow-wrap: anywhere; white-space: pre-wrap; }

.notice { padding: 0.55rem 0.75rem; border-radius: 6px; border: 1px solid var(--border); margin: 0.5rem 0; }
.notice.bad { border-color: var(--danger); color: var(--danger); }
.notice.warn { border-color: var(--warn); color: var(--warn); }
.notice ul { margin: 0.25rem 0 0; padding-left: 1.2rem; }
.preview { white-space: pre-wrap; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 0.9rem; font-size: 0.92rem; overflow-wrap: anywhere; }
.preview .hdr { color: var(--muted); }
.actions { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.75rem; }
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { padding: 0.45rem 0; border-bottom: 1px solid var(--border); display: grid; grid-template-columns: 11rem minmax(0, 1fr); gap: 0.75rem; }
@media (max-width: 600px) { .timeline li { grid-template-columns: minmax(0, 1fr); gap: 0.1rem; } }
.result { white-space: pre-wrap; background: var(--bg); padding: 0.75rem; border-radius: 6px; overflow-x: auto; max-height: 24rem; }

/* utility classes (inline style attributes are blocked by the CSP) */
.grow { flex: 1 1 14rem; min-width: 0; }
.gap { height: 0.5rem; }
.mt { margin-top: 0.75rem; }
.flush { margin: 0; }
.full { width: 100%; }
.w9 { width: 9rem; }

.toolbar > label { display: flex; flex-direction: column; gap: 0.15rem; color: var(--muted); font-size: 0.82rem; }
.toolbar > label > input, .toolbar > label > select { color: var(--text); font-size: 0.95rem; }
@media (max-width: 760px) {
  .topbar nav { order: 3; flex: 1 1 100%; overflow-x: auto; flex-wrap: nowrap; }
  .topbar nav a { white-space: nowrap; }
  .account { margin-left: auto; }
}

/* sign-in and account */
.auth-card { max-width: 400px; margin: 8vh auto 0; }
.stack { display: flex; flex-direction: column; gap: 0.75rem; }
.stack label { display: flex; flex-direction: column; gap: 0.25rem; color: var(--muted); font-size: 0.85rem; }
.stack input { color: var(--text); font-size: 1rem; padding: 0.55rem 0.7rem; }
.stack button[type=submit] { padding: 0.6rem; font-weight: 600; }
.account { display: flex; gap: 0.75rem; align-items: center; margin-left: auto; }
.account[hidden] { display: none; }
.select-all { user-select: all; font-size: 1rem; }
.wrap-code { overflow-wrap: anywhere; word-break: break-word; }
.preview-head { border-bottom-left-radius: 0; border-bottom-right-radius: 0; border-bottom: 0; }
.email-frame { display: block; width: 100%; height: 640px; border: 1px solid var(--border); border-top: 0; border-radius: 0 0 8px 8px; background: #FBFAF7; }
details summary { cursor: pointer; }

/* bulk review */
.bulk-bar { position: sticky; top: 0; z-index: 2; background: var(--card); padding: 0.5rem 0; border-bottom: 1px solid var(--border); }
.review-card { border: 1px solid var(--border); border-radius: 10px; padding: 0.85rem 1rem; margin-top: 0.75rem; }
.review-head { display: flex; gap: 0.6rem; align-items: center; cursor: pointer; }
.review-head input { width: 1.1rem; height: 1.1rem; flex: none; }
.review-open { margin-left: auto; }
.review-indent { margin-left: 1.7rem; }
.review-subject { font-weight: 600; margin-top: 0.6rem; margin-bottom: 0.35rem; }
.review-body { white-space: pre-wrap; overflow-wrap: anywhere; }
.review-notice { border-color: var(--ok); }
.review-notice dl { margin: 0.5rem 0; }
.reply { border-top: 1px solid var(--border); padding-top: 0.6rem; margin-top: 0.6rem; }
.reply .review-subject, .reply .review-body { margin-left: 0; }
.block { display: block; margin-top: 0.35rem; }