:root {
    --bg: #f4f6f9;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --text: #1f2937;
    --muted: #6b7280;
    --border: #e2e8f0;
    --primary: #2563eb;
    --primary-text: #ffffff;
    --danger: #dc2626;
    --success: #15803d;
    --warning: #b45309;
    --badge-red-bg: #fee2e2;
    --badge-red: #991b1b;
    --badge-green-bg: #dcfce7;
    --badge-green: #166534;
    --badge-gray-bg: #eef2f7;
    --badge-gray: #374151;
    --badge-amber-bg: #fef3c7;
    --badge-amber: #92400e;
    --badge-blue-bg: #dbeafe;
    --badge-blue: #1e40af;
    --radius: 8px;
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f141a;
        --surface: #171d25;
        --surface-2: #1d252f;
        --text: #e5e7eb;
        --muted: #9ca3af;
        --border: #2b3441;
        --primary: #3b82f6;
        --danger: #f87171;
        --success: #4ade80;
        --warning: #fbbf24;
        --badge-red-bg: #4c1d1d;
        --badge-red: #fecaca;
        --badge-green-bg: #14361f;
        --badge-green: #bbf7d0;
        --badge-gray-bg: #273140;
        --badge-gray: #d1d5db;
        --badge-amber-bg: #42300f;
        --badge-amber: #fde68a;
        --badge-blue-bg: #1e2f52;
        --badge-blue: #bfdbfe;
        color-scheme: dark;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

[hidden] { display: none !important; }

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

h1 { font-size: 1.4rem; margin: 0 0 1rem; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }

code, .mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .92em; }

/* ---------- login ---------- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.login-card {
    width: 100%; max-width: 360px; background: var(--surface); border: 1px solid var(--border);
    border-radius: 12px; padding: 2rem; display: grid; gap: 1rem;
}
.login-card h1 { text-align: center; }

/* ---------- layout ---------- */
.topbar {
    display: flex; align-items: center; gap: 1.5rem; padding: 0 1.25rem; height: 52px;
    background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; white-space: nowrap; }
#nav { display: flex; gap: .25rem; flex: 1; overflow-x: auto; }
#nav a { color: var(--muted); padding: .4rem .7rem; border-radius: 6px; white-space: nowrap; }
#nav a:hover { background: var(--surface-2); text-decoration: none; color: var(--text); }
#nav a.active { background: var(--badge-blue-bg); color: var(--badge-blue); font-weight: 600; }
.user { display: flex; align-items: center; gap: .75rem; color: var(--muted); white-space: nowrap; }

main { max-width: 1400px; margin: 0 auto; padding: 1.5rem 1.25rem 4rem; }

.card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 1rem 1.25rem; margin-bottom: 1.25rem;
}
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); gap: 1.25rem; align-items: start; margin-bottom: 1.25rem; }
.grid-2 > .card { margin-bottom: 0; }
.stack { display: grid; gap: 1.25rem; }

/* ---------- stats ---------- */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin-bottom: 1.25rem; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.25rem; }
.tile .label { color: var(--muted); font-size: .85rem; }
.tile .value { font-size: 1.6rem; font-weight: 650; font-variant-numeric: tabular-nums; }
a.tile:hover { text-decoration: none; border-color: var(--primary); }

/* ---------- forms ---------- */
label { display: grid; gap: .25rem; font-size: .85rem; color: var(--muted); }
input, select, textarea, button { font: inherit; color: inherit; }
input, select, textarea {
    background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: .4rem .6rem; min-width: 0;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary); outline-offset: -1px; }
textarea { min-height: 7rem; resize: vertical; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
label.inline { display: flex; align-items: center; gap: .4rem; color: var(--text); font-size: .9rem; }

.toolbar { display: flex; flex-wrap: wrap; gap: .75rem; align-items: end; margin-bottom: 1rem; }
.toolbar .grow { flex: 1; min-width: 200px; }
.form-grid { display: grid; gap: .75rem; }
.form-row { display: flex; flex-wrap: wrap; gap: .75rem; align-items: end; }

button {
    border: 1px solid var(--border); background: var(--surface); border-radius: 6px; padding: .4rem .85rem; cursor: pointer;
    white-space: nowrap;
}
button:hover { background: var(--surface-2); }
button:disabled { opacity: .5; cursor: default; }
button.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
button.primary:hover { filter: brightness(1.08); }
button.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); }
button.danger:hover { background: var(--badge-red-bg); }
button.small { padding: .15rem .5rem; font-size: .82rem; }
button.link { border: 0; background: none; color: var(--primary); padding: 0; }

.error { color: var(--danger); margin: 0; }
.hint { color: var(--muted); font-size: .85rem; margin: .25rem 0 0; }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .45rem .6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; white-space: nowrap; }
tbody tr:hover { background: var(--surface-2); }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
td.actions { white-space: nowrap; text-align: right; }
td.actions button + button { margin-left: .3rem; }
td.notice { max-width: 420px; }
.notice-text { white-space: pre-wrap; word-break: break-word; }
.notice-text.clamped { display: -webkit-box; -webkit-line-clamp: 3; line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.sub { color: var(--muted); font-size: .82rem; }
.empty { color: var(--muted); text-align: center; padding: 2rem; }

.pager { display: flex; align-items: center; gap: .75rem; justify-content: flex-end; margin-top: .75rem; color: var(--muted); }
.bulkbar { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-bottom: .75rem; min-height: 32px; }
.bulkbar .grow { flex: 1; }
.kv + .form-row { margin-top: 1rem; }
.bulkbar .count { color: var(--muted); margin-right: .5rem; }

/* ---------- badges ---------- */
.badge {
    display: inline-block; padding: .05rem .45rem; border-radius: 999px; font-size: .76rem; font-weight: 600; white-space: nowrap;
    background: var(--badge-gray-bg); color: var(--badge-gray);
}
.badge.red { background: var(--badge-red-bg); color: var(--badge-red); }
.badge.green { background: var(--badge-green-bg); color: var(--badge-green); }
.badge.amber { background: var(--badge-amber-bg); color: var(--badge-amber); }
.badge.blue { background: var(--badge-blue-bg); color: var(--badge-blue); }
.badges { display: flex; flex-wrap: wrap; gap: .25rem; margin-top: .2rem; }
.pill { background: var(--danger); color: #fff; border-radius: 999px; padding: 0 .4rem; font-size: .75rem; font-weight: 700; }

.tabs { display: flex; flex-wrap: wrap; gap: .25rem; margin-bottom: 1rem; }
.tabs button.active { background: var(--badge-blue-bg); color: var(--badge-blue); border-color: transparent; font-weight: 600; }

dl.kv { display: grid; grid-template-columns: max-content 1fr; gap: .35rem 1.25rem; margin: 0; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; }

details > summary { cursor: pointer; font-weight: 600; }
details[open] > summary { margin-bottom: .75rem; }

/* ---------- toasts ---------- */
#toasts { position: fixed; right: 1rem; bottom: 1rem; display: grid; gap: .5rem; z-index: 100; max-width: min(460px, calc(100vw - 2rem)); }
.toast {
    background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--success);
    border-radius: 6px; padding: .65rem .9rem; box-shadow: 0 6px 20px rgba(0, 0, 0, .15); white-space: pre-line;
}
.toast.error { border-left-color: var(--danger); color: var(--text); }
.toast.warn { border-left-color: var(--warning); }

/* ---------- footer ---------- */
.footer {
    max-width: 1400px; margin: 0 auto; padding: 0 1.25rem 1.5rem; display: flex; flex-wrap: wrap; gap: .25rem 1rem;
    justify-content: space-between; color: var(--muted); font-size: .8rem;
}
#app-view { min-height: 100vh; display: flex; flex-direction: column; }
#app-view > main { flex: 1; width: 100%; }

@media (max-width: 760px) {
    .topbar { flex-wrap: wrap; height: auto; padding: .5rem 1rem; gap: .5rem; }
    #nav { order: 3; flex: 1 1 100%; }
    main { padding: 1rem; }
    .grid-2 { grid-template-columns: 1fr; }
}

/* ---------- API tokens ---------- */
.token-box { margin-top: 1rem; padding: .75rem 1rem; border: 1px solid var(--warning); border-radius: var(--radius); background: var(--badge-amber-bg); display: grid; gap: .5rem; }
.token-value { flex: 1; min-width: 280px; }
.form-row .grow { flex: 1; min-width: 200px; }
pre.code { background: var(--surface-2); border: 1px solid var(--border); border-radius: 6px; padding: .75rem 1rem; overflow-x: auto; margin: 0 0 .5rem; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .85rem; }

/* ---------- scheduler ---------- */
input.days { width: 6.5rem; }
.warn-box { border-color: var(--warning); background: var(--badge-amber-bg); }
.preview-status { margin-left: .35rem; }