:root {
    --bg: #0f1419;
    --card: #1a2332;
    --border: #2a3544;
    --text: #e7ecf3;
    --muted: #9aa8b8;
    --accent: #6ee7a0;
    --accent-dim: #1a3d2e;
    --danger: #f87171;
    --input-bg: #121a24;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 960px; margin: 0 auto; padding: 1.5rem; }
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}
h1 { font-size: 1.5rem; margin-bottom: 1rem; }
h2 { font-size: 1.15rem; margin-bottom: .75rem; }
.muted { color: var(--muted); font-size: .9rem; }
.badge {
    display: inline-block;
    font-size: .75rem;
    padding: .2rem .6rem;
    border-radius: 999px;
    background: #243044;
    color: var(--muted);
}
.badge--ok { background: var(--accent-dim); color: var(--accent); }
.badge--off { background: #3d1a1a; color: var(--danger); }
label { display: block; margin-bottom: .35rem; font-size: .9rem; color: var(--muted); }
input, select, button, textarea {
    font: inherit;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--input-bg);
    color: var(--text);
    padding: .55rem .75rem;
    width: 100%;
    margin-bottom: .75rem;
}
button, .btn {
    cursor: pointer;
    background: #243044;
    border: 1px solid var(--border);
    display: inline-block;
    width: auto;
    padding: .55rem 1rem;
    text-align: center;
}
button.primary, .btn.primary { background: var(--accent-dim); color: var(--accent); border-color: #2d5a40; }
button:hover, .btn:hover { filter: brightness(1.08); text-decoration: none; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { padding: .55rem .4rem; border-bottom: 1px solid var(--border); text-align: left; }
th { color: var(--muted); font-weight: 500; }
.nav { display: flex; gap: 1rem; margin-bottom: 1.5rem; align-items: center; flex-wrap: wrap; }
.nav .spacer { flex: 1; }
.alert { padding: .75rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.alert-error { background: #3d1a1a; color: #fca5a5; border: 1px solid #7f1d1d; }
.alert-success { background: var(--accent-dim); color: var(--accent); border: 1px solid #2d5a40; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.stat-box { background: var(--input-bg); border-radius: 8px; padding: 1rem; }
.stat-box .val { font-size: 1.35rem; font-weight: 600; }
.stat-box .lbl { font-size: .8rem; color: var(--muted); }
.chart-wrap { position: relative; height: 280px; margin: 1rem 0; }
.toolbar { display: flex; gap: .75rem; flex-wrap: wrap; align-items: center; margin-bottom: 1rem; }
.toolbar input, .toolbar select { width: auto; margin: 0; }
.copy-box {
    font-family: ui-monospace, monospace;
    font-size: .85rem;
    background: var(--input-bg);
    padding: .75rem;
    border-radius: 8px;
    word-break: break-all;
    margin: .5rem 0 1rem;
}