:root {
    --bg: #0f1420;
    --panel: #1a2233;
    --panel-2: #222c42;
    --line: #2c3752;
    --text: #e7ecf5;
    --muted: #8b98b4;
    --accent: #4f8cff;
    --green: #33c17a;
    --red: #f0555f;
    --amber: #f0b36e;
    --radius: 14px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.muted { color: var(--muted); }
.hidden { display: none !important; }

/* ---------- Login ---------- */
.login-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: radial-gradient(1200px 600px at 50% -10%, #1c2740, var(--bg));
}
.login-card {
    background: var(--panel);
    border: 1px solid var(--line);
    padding: 32px;
    border-radius: var(--radius);
    width: min(360px, 92vw);
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.login-card h1 { margin: 0; font-size: 28px; }
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; }
.login-card input {
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: var(--panel-2);
    color: var(--text);
    font-size: 15px;
}
.alert {
    background: rgba(240, 85, 95, .15);
    border: 1px solid var(--red);
    color: #ffd7d9;
    padding: 8px 12px;
    border-radius: 10px;
    font-size: 14px;
}

/* ---------- Layout ---------- */
.topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 10;
}
.brand { font-weight: 700; font-size: 18px; }
.spacer { flex: 1; }
main { padding: 20px; max-width: 1100px; margin: 0 auto; }

/* ---------- Buttons ---------- */
.btn {
    border: 1px solid var(--line);
    background: var(--panel-2);
    color: var(--text);
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: filter .15s;
}
.btn:hover { filter: brightness(1.15); }
.btn.ghost { background: transparent; }
.btn.red { background: var(--red); border-color: var(--red); color: #fff; }
.btn.amber { background: var(--amber); border-color: var(--amber); color: #241a00; }
.btn.blue { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.sm { padding: 5px 10px; font-size: 13px; }

/* ---------- Device cards ---------- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}
.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.card-head { display: flex; align-items: center; gap: 10px; }
.card-head h3 { margin: 0; font-size: 17px; flex: 1; cursor: pointer; }
.dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.dot.on { background: var(--green); box-shadow: 0 0 8px var(--green); }
.dot.off { background: #556; }
.badge {
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--panel-2);
    color: var(--muted);
}
.badge.pending { background: rgba(240, 179, 110, .2); color: var(--amber); }

.kv { font-size: 14px; display: grid; grid-template-columns: 70px 1fr; gap: 4px 8px; }
.kv .k { color: var(--muted); }
.kv .v { word-break: break-word; }
.kv .v.url a { color: var(--accent); text-decoration: none; }

.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }

/* ---------- Detail / timeline ---------- */
.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px;
}
.detail-head { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.detail-head h2 { margin: 0; flex: 1; }
.detail-head input[type=date] {
    background: var(--panel-2);
    color: var(--text);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 6px 10px;
}
.summary { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0; }
.chip {
    background: var(--panel-2);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 8px 12px;
    font-size: 14px;
}
.chip b { color: var(--accent); }

.timeline { display: flex; flex-direction: column; gap: 8px; }
.row {
    display: grid;
    grid-template-columns: 120px 130px 1fr 70px;
    gap: 10px;
    padding: 10px 12px;
    background: var(--panel-2);
    border: 1px solid var(--line);
    border-radius: 10px;
    font-size: 14px;
    align-items: center;
}
.row .time { color: var(--muted); font-variant-numeric: tabular-nums; }
.row .app { font-weight: 600; }
.row .what { color: var(--muted); word-break: break-word; }
.row .what a { color: var(--accent); text-decoration: none; }
.row .dur { text-align: left; font-variant-numeric: tabular-nums; }

@media (max-width: 640px) {
    .row { grid-template-columns: 1fr 1fr; }
    .row .what { grid-column: 1 / -1; }
}

/* ---------- Toast ---------- */
#toast {
    position: fixed;
    bottom: 20px;
    inset-inline-start: 20px;
    background: var(--panel-2);
    border: 1px solid var(--line);
    padding: 12px 16px;
    border-radius: 10px;
    opacity: 0;
    transform: translateY(10px);
    transition: .2s;
    pointer-events: none;
    z-index: 100;
}
#toast.show { opacity: 1; transform: translateY(0); }