:root {
    --bg: #f5f6f8;
    --surface: #ffffff;
    --surface-2: #f0f2f5;
    --border: #e1e4e8;
    --text: #1d2128;
    --muted: #6a7280;
    --accent: #2f6fdd;
    --accent-text: #ffffff;
    --ok: #1f9d55;
    --warn: #c98a00;
    --danger: #d64545;
    --radius: 8px;
    --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #111418;
        --surface: #1a1e24;
        --surface-2: #232830;
        --border: #2e343d;
        --text: #e6e8eb;
        --muted: #9aa2ad;
        --accent: #5b8ff0;
        --ok: #3cc47c;
        --warn: #e0a82e;
        --danger: #ef6b6b;
        --shadow: none;
        color-scheme: dark;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--danger); min-height: 1.2em; }
.mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 12.5px; }

/* ---- Login ---- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card {
    width: 100%; max-width: 360px; background: var(--surface); border: 1px solid var(--border);
    border-radius: 12px; padding: 28px; display: grid; gap: 14px; box-shadow: var(--shadow);
}
.brand { font-weight: 700; font-size: 18px; display: flex; align-items: center; gap: 8px; }
.logo { color: var(--accent); font-size: 22px; }

/* ---- Layout ---- */
.layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.sidebar {
    background: var(--surface); border-right: 1px solid var(--border); padding: 18px 12px;
    display: flex; flex-direction: column; gap: 18px; position: sticky; top: 0; height: 100vh;
}
.sidebar .brand { padding: 0 8px; }
nav { display: grid; gap: 2px; flex: 1; align-content: start; }
nav a { padding: 8px 10px; border-radius: 6px; cursor: pointer; color: var(--muted); user-select: none; }
nav a:hover { background: var(--surface-2); color: var(--text); }
nav a.active { background: var(--accent); color: var(--accent-text); }
main { padding: 20px 28px 40px; min-width: 0; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.topbar h1 { font-size: 20px; margin: 0; }

@media (max-width: 760px) {
    .layout { grid-template-columns: 1fr; }
    .sidebar { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; padding: 10px 16px; }
    nav { display: flex; flex-wrap: wrap; flex: 1 1 100%; order: 3; }
    main { padding: 16px; }
}

/* ---- Components ---- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.card h3 { margin: 0 0 12px; font-size: 14px; color: var(--muted); font-weight: 600; }
.grid { display: grid; gap: 16px; }
.kpis { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.two { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.kpi .value { font-size: 28px; font-weight: 700; font-variant-numeric: tabular-nums; }
.kpi .label { color: var(--muted); }

.bar-row { display: grid; grid-template-columns: 110px 1fr 40px; align-items: center; gap: 10px; margin: 6px 0; }
.bar { height: 10px; background: var(--surface-2); border-radius: 5px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--accent); border-radius: 5px; }
.bar-row .n { text-align: right; font-variant-numeric: tabular-nums; }

.btn {
    border: 1px solid var(--border); background: var(--surface); color: var(--text); padding: 7px 12px;
    border-radius: 6px; cursor: pointer; font: inherit; white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--danger); }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.sm { padding: 3px 8px; font-size: 12.5px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }

input, select, textarea {
    font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border);
    border-radius: 6px; padding: 7px 9px; width: 100%;
}
textarea { min-height: 140px; font-family: ui-monospace, Consolas, monospace; font-size: 12.5px; }
label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
.form { display: grid; gap: 12px; }
.form-row { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.filters > * { width: auto; min-width: 150px; }

.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); background: var(--surface-2); }
tr:last-child td { border-bottom: none; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--surface-2); }
.empty { padding: 28px; text-align: center; color: var(--muted); }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--surface-2); }
.badge.ok { color: var(--ok); }
.badge.warn { color: var(--warn); }
.badge.danger { color: var(--danger); }
.badge.info { color: var(--accent); }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); margin-right: 6px; }
.dot.on { background: var(--ok); }

dialog {
    border: 1px solid var(--border); border-radius: 12px; padding: 0; width: min(760px, calc(100vw - 32px));
    background: var(--surface); color: var(--text); box-shadow: 0 20px 50px rgba(0, 0, 0, .25);
}
dialog::backdrop { background: rgba(10, 14, 20, .45); }
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.modal-head h2 { font-size: 16px; margin: 0; }
#modalBody { padding: 18px; max-height: 75vh; overflow: auto; display: grid; gap: 16px; }
.kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px 16px; }
.kv div span { display: block; font-size: 12px; color: var(--muted); }
h4 { margin: 4px 0 0; font-size: 13px; }

.nav-section { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); padding: 12px 10px 4px; }
.meter { height: 8px; background: var(--surface-2); border-radius: 4px; overflow: hidden; margin-top: 4px; }
.meter > span { display: block; height: 100%; background: var(--accent); }
.meter > span.warn { background: var(--warn); }
.meter > span.danger { background: var(--danger); }
.chart { width: 100%; height: 120px; display: block; }
.chart .axis { stroke: var(--border); stroke-width: 1; }
.chart .line { fill: none; stroke: var(--accent); stroke-width: 2; }
.chart .line.alt { stroke: var(--ok); }
.chart text { fill: var(--muted); font-size: 10px; }
.legend { display: flex; gap: 14px; font-size: 12px; color: var(--muted); }
.legend i { display: inline-block; width: 10px; height: 3px; margin-right: 5px; vertical-align: middle; background: var(--accent); }
.legend i.alt { background: var(--ok); }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); }
.tabs button { border: none; background: none; padding: 8px 12px; cursor: pointer; color: var(--muted); font: inherit; border-bottom: 2px solid transparent; }
.tabs button.active { color: var(--text); border-bottom-color: var(--accent); }
.checklist { display: grid; gap: 4px; max-height: 180px; overflow: auto; border: 1px solid var(--border); border-radius: 6px; padding: 8px; }
.checklist label { display: flex; gap: 8px; align-items: center; color: var(--text); }
.checklist input { width: auto; }
pre.report { background: var(--surface-2); padding: 12px; border-radius: 6px; overflow: auto; font-size: 12.5px; margin: 0; }
.kpi.alert .value { color: var(--warn); }

.toast {
    position: fixed; bottom: 20px; right: 20px; padding: 10px 14px; border-radius: 8px;
    background: var(--text); color: var(--bg); opacity: 0; transform: translateY(8px);
    transition: all .2s; pointer-events: none; max-width: 420px;
}
.toast.show { opacity: 1; transform: none; }
.toast.err { background: var(--danger); color: #fff; }