/* FVE Monitor — styly */
:root {
    --bg: #0f1419;
    --surface: #1a2129;
    --surface-2: #232b35;
    --border: #2d3743;
    --text: #e6edf3;
    --text-dim: #8b949e;
    --accent: #f5b800;
    --good: #3fb950;
    --warn: #d29922;
    --bad: #f85149;
    --info: #58a6ff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.topbar h1 { font-size: 1.25rem; font-weight: 600; }
.topbar-meta { display: flex; gap: 1rem; align-items: center; color: var(--text-dim); font-size: 0.85rem; }

.alert-badge {
    background: var(--bad);
    color: white;
    border-radius: 999px;
    padding: 2px 8px;
    font-weight: 700;
    font-size: 0.75rem;
}
.hidden { display: none !important; }

main { flex: 1; padding: 1.5rem; max-width: 1400px; margin: 0 auto; width: 100%; }

/* ── Karty elektráren ── */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.1s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}
.card-name { font-size: 1rem; font-weight: 600; }
.card-meta { color: var(--text-dim); font-size: 0.8rem; margin-top: 2px; }

.status-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
}
.status-on_track { background: var(--good); box-shadow: 0 0 6px var(--good); }
.status-below     { background: var(--warn); }
.status-underperform { background: var(--bad); box-shadow: 0 0 6px var(--bad); }

.kpi-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-bottom: 1rem;
}
.kpi {
    background: var(--surface-2);
    border-radius: 6px;
    padding: 0.6rem 0.75rem;
}
.kpi-label { color: var(--text-dim); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.5px; }
.kpi-value { font-size: 1.4rem; font-weight: 600; margin-top: 2px; }
.kpi-unit { font-size: 0.85rem; color: var(--text-dim); margin-left: 2px; font-weight: 400; }

.progress {
    background: var(--surface-2);
    border-radius: 999px;
    height: 8px;
    overflow: hidden;
    position: relative;
}
.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--good), var(--accent));
    border-radius: 999px;
    transition: width 0.5s;
}
.progress-bar.below       { background: linear-gradient(90deg, var(--warn), var(--bad)); }
.progress-bar.underperform { background: var(--bad); }

.progress-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 0.4rem;
    font-size: 0.8rem;
    color: var(--text-dim);
}

/* ── Detail ── */
.detail {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 2rem;
    overflow: hidden;
}
.detail-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
}
.detail-head h2 { font-size: 1.1rem; }
#detail-close {
    background: transparent;
    color: var(--text-dim);
    border: 1px solid var(--border);
    border-radius: 4px;
    width: 30px; height: 30px;
    cursor: pointer;
    font-size: 1.2rem;
}
#detail-close:hover { color: var(--text); border-color: var(--text-dim); }

.detail-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    padding: 1.5rem;
}
@media (max-width: 900px) { .detail-body { grid-template-columns: 1fr; } }

.chart-wrap h3 {
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.chart-wrap canvas { max-height: 300px; }

/* ── Alerty ── */
.alerts h2 { font-size: 1rem; margin-bottom: 1rem; color: var(--text-dim); }
.alerts ul { list-style: none; }
.alerts li {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--warn);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.alerts li.severity-critical { border-left-color: var(--bad); }
.alerts li.severity-info     { border-left-color: var(--info); }
.alerts li.empty {
    color: var(--text-dim);
    text-align: center;
    border-left-color: var(--border);
}
.alert-message { flex: 1; }
.alert-meta { color: var(--text-dim); font-size: 0.8rem; margin-top: 2px; }
.alert-ack {
    background: transparent;
    color: var(--text-dim);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 4px 10px;
    cursor: pointer;
    font-size: 0.8rem;
}
.alert-ack:hover { color: var(--text); border-color: var(--text-dim); }

footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-dim);
    border-top: 1px solid var(--border);
}

.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-dim);
    grid-column: 1 / -1;
}