:root {
    --bg: #0f1115;
    --card: #171a21;
    --border: #2a2f3a;
    --text: #e6e8eb;
    --muted: #8b93a1;
    --accent: #4f8cff;
    --ok: #3ecf8e;
    --error: #ff6b6b;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, Segoe UI, Roboto, sans-serif;
    font-size: 15px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
}

.brand { color: var(--text); font-weight: 700; text-decoration: none; font-size: 18px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 20px; }
nav a:hover { color: var(--text); }

main { max-width: 900px; margin: 0 auto; padding: 32px 24px; }

h1 { margin-top: 0; }

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px 24px;
    margin-bottom: 20px;
}

.card.centered { max-width: 360px; margin: 60px auto; }
.card.success { border-color: var(--ok); }

label { display: block; margin-bottom: 14px; color: var(--muted); font-size: 13px; }
label.checkbox { display: flex; align-items: center; gap: 8px; }
label.checkbox input { width: auto; }

input[type=text], input[type=password], select {
    display: block;
    width: 100%;
    margin-top: 6px;
    padding: 10px 12px;
    background: #0f1115;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 14px;
}

button {
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 10px 18px;
    font-size: 14px;
    cursor: pointer;
}
button:hover { opacity: 0.9; }

.toggle-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 4px 12px;
    font-size: 13px;
}

table.list { width: 100%; border-collapse: collapse; }
table.list th, table.list td {
    text-align: left;
    padding: 10px 8px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
table.list th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }
table.list a { color: var(--accent); text-decoration: none; }

.badge { padding: 2px 10px; border-radius: 12px; font-size: 12px; }
.badge.on { background: rgba(62,207,142,0.15); color: var(--ok); }
.badge.off { background: rgba(139,147,161,0.15); color: var(--muted); }

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}
.kpi-label { font-size: 11px; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.kpi-value { font-size: 20px; font-weight: 600; }
.kpi-value.ok { color: var(--ok); }
.kpi-value.error { color: var(--error); }

.kpi-grid.period {
    border-top: 1px solid var(--border);
    padding-top: 16px;
    margin-top: 4px;
}

.range-selector {
    display: flex;
    gap: 6px;
    margin: 8px 0 4px;
    flex-wrap: wrap;
}
.range-btn {
    padding: 5px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--muted);
    text-decoration: none;
    font-size: 13px;
}
.range-btn:hover { color: var(--text); }
.range-btn.active { background: var(--accent); color: white; border-color: var(--accent); }

.muted { color: var(--muted); }
.muted.small { font-size: 12px; margin-top: 0; }
.error { color: var(--error); }
.ok { color: var(--ok); }
.mono { font-family: monospace; background: #0f1115; padding: 8px 12px; border-radius: 6px; word-break: break-all; }