/* ═══════════════════════════════════════════════════════════════
   Palladium Z1 Monitor — Dark Theme Dashboard
   ═══════════════════════════════════════════════════════════════ */
:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-card: #1c2330;
    --bg-card-hover: #232b3a;
    --border: #30363d;
    --border-light: #3a4250;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent: #58a6ff;
    --green: #3fb950;
    --red: #f85149;
    --orange: #d29922;
    --blue: #58a6ff;
    --purple: #bc8cff;
    --gray: #6e7681;
    --radius: 8px;
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
                 Arial, "Noto Sans SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.5;
}

/* ─── Top Nav ─── */
.topnav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-logo { font-size: 22px; }
.nav-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-links a {
    padding: 8px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.15s;
    font-weight: 500;
}
.nav-links a:hover { color: var(--text-primary); background: var(--bg-card); }
.nav-links a.active { color: var(--accent); background: rgba(88,166,255,0.1); }
.nav-btn {
    padding: 8px 16px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
    transition: opacity 0.15s;
}
.nav-btn:hover { opacity: 0.85; }

/* ─── Container ─── */
.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px 24px 60px;
}

/* ─── System Info Bar ─── */
.system-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
    padding: 12px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 16px;
}
.sys-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.sys-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.sys-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
}
.refresh-controls {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-direction: row;
}
.refresh-controls label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
}
.refresh-controls select {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 3px 8px;
    font-size: 12px;
}
.btn-sm {
    padding: 4px 8px;
    font-size: 12px;
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s;
}
.btn-sm:hover { background: var(--border-light); }
.btn-sm.btn-danger { color: var(--red); border-color: var(--red); }
.btn-sm.btn-danger:hover { background: rgba(248,81,73,0.15); }

/* ─── Status Badges ─── */
.status-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.3px;
}
.status-ok { background: rgba(63,185,80,0.15); color: var(--green); }
.status-warning { background: rgba(210,153,34,0.15); color: var(--orange); }
.status-error { background: rgba(248,81,73,0.15); color: var(--red); }
.status-unknown { background: rgba(110,118,129,0.15); color: var(--gray); }
.status-online { background: rgba(63,185,80,0.15); color: var(--green); }
.status-offline { background: rgba(248,81,73,0.15); color: var(--red); }

/* ─── Metrics Grid ─── */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}
.metric-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.15s;
}
.metric-card:hover { border-color: var(--border-light); }
.metric-icon { font-size: 28px; }
.metric-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.metric-value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}
.metric-value.metric-warn { color: var(--orange); }
.metric-sub {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ─── Section Headers ─── */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 24px 0 12px;
}
.section-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

/* ─── Legend ─── */
.legend {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--text-secondary);
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ─── Rack Card ─── */
.rack-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
}
.rack-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}
.rack-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}
.rack-count {
    font-size: 12px;
    color: var(--text-muted);
}

/* ─── Cluster Section ─── */
.cluster-section {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}
.cluster-section:last-child { border-bottom: none; }
.cluster-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}
.ccd-badge {
    padding: 1px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}
.ccd-online { background: rgba(63,185,80,0.15); color: var(--green); }
.ccd-offline { background: rgba(248,81,73,0.15); color: var(--red); }

/* ─── Boards Grid ─── */
.boards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 8px;
}

/* ─── Board Card ─── */
.board-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    transition: all 0.15s;
}
.board-card:hover { border-color: var(--border-light); transform: translateY(-1px); }
.board-card.board-offline {
    border-color: rgba(248,81,73,0.4);
    background: rgba(248,81,73,0.05);
}
.board-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}
.board-ld {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}
.board-status-badge {
    padding: 1px 6px;
    border-radius: 8px;
    font-size: 10px;
    font-weight: 600;
}

/* ─── Domain Cells ─── */
.domains-row {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 2px;
}
.domain-cell {
    text-align: center;
    font-size: 10px;
    font-weight: 700;
    padding: 4px 0;
    border-radius: 3px;
    min-width: 18px;
    transition: transform 0.1s;
    cursor: default;
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
}
.domain-cell:hover { transform: scale(1.15); z-index: 5; position: relative; }
.domain-available {
    background: rgba(63,185,80,0.15);
    color: var(--green);
    border: 1px solid rgba(63,185,80,0.3);
}
.domain-downloaded {
    background: rgba(88,166,255,0.2);
    color: var(--blue);
    border: 1px solid rgba(88,166,255,0.4);
}
.domain-disabled {
    background: rgba(248,81,73,0.15);
    color: var(--red);
    border: 1px solid rgba(248,81,73,0.3);
}
.domain-not_exist {
    background: rgba(110,118,129,0.1);
    color: var(--gray);
    border: 1px solid rgba(110,118,129,0.2);
}

/* ─── Card (generic) ─── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 12px;
}
.card.empty-state {
    padding: 24px;
    text-align: center;
    color: var(--text-muted);
}

/* ─── Data Table ─── */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
.data-table thead {
    background: var(--bg-secondary);
}
.data-table th {
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.data-table td {
    padding: 8px 14px;
    border-bottom: 1px solid rgba(48,54,61,0.5);
    color: var(--text-primary);
}
.data-table tbody tr:hover { background: var(--bg-card-hover); }
.data-table tbody tr:last-child td { border-bottom: none; }
.text-mono {
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
    font-size: 12px;
}
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-blue { color: var(--blue); }
.text-gray { color: var(--gray); }

/* ─── Pods Grid ─── */
.pods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 12px;
    margin-bottom: 12px;
}
.pod-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.pod-header {
    padding: 8px 14px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    font-weight: 700;
    font-size: 14px;
}
.pod-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}
.pod-table td {
    padding: 5px 14px;
    border-bottom: 1px solid rgba(48,54,61,0.4);
}
.pod-table tr:last-child td { border-bottom: none; }
.pod-label {
    color: var(--text-secondary);
    white-space: nowrap;
    width: 40%;
}
.pod-sublabel {
    color: var(--text-muted);
    font-size: 11px;
    padding-left: 24px !important;
}
.pod-value {
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
    color: var(--text-primary);
}
.pod-row-available td { color: var(--green); }
.pod-row-locked td { color: var(--orange); }
.pod-row-reserved td { color: var(--blue); }
.pod-row-unavailable td { color: var(--red); }

/* ─── Utilization Bar (history table) ─── */
.util-bar {
    position: relative;
    width: 120px;
    height: 20px;
    background: var(--bg-primary);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
}
.util-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--green), var(--blue));
    border-radius: 10px;
    transition: width 0.3s;
}
.util-text {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-primary);
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

/* ─── Pagination ─── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 16px;
}
.page-btn {
    padding: 6px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.15s;
}
.page-btn:hover { border-color: var(--accent); color: var(--accent); }
.page-info {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ─── Tags ─── */
.tag {
    display: inline-block;
    padding: 1px 8px;
    background: rgba(88,166,255,0.1);
    color: var(--accent);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
}

/* ─── Modal ─── */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}
.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}
.modal-header h2 { font-size: 16px; font-weight: 700; }
.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
}
.modal-close:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.modal-body {
    padding: 16px 20px;
    overflow-y: auto;
    flex: 1;
}
.modal-hint {
    margin-bottom: 10px;
    color: var(--text-secondary);
    font-size: 13px;
}
.modal-hint code {
    background: var(--bg-primary);
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 12px;
    color: var(--accent);
}
.paste-textarea {
    width: 100%;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
    font-size: 12px;
    resize: vertical;
    line-height: 1.6;
}
.paste-textarea:focus {
    outline: none;
    border-color: var(--accent);
}
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 12px 20px;
    border-top: 1px solid var(--border);
}
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
    text-decoration: none;
    transition: all 0.15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #4493f8; }
.btn-secondary { background: var(--bg-card-hover); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--border-light); }
.btn-lg { padding: 12px 24px; font-size: 15px; }

/* ─── Empty State (no data) ─── */
.empty-state-full {
    text-align: center;
    padding: 80px 20px;
}
.empty-icon { font-size: 64px; margin-bottom: 16px; }
.empty-state-full h2 { font-size: 22px; margin-bottom: 8px; }
.empty-state-full p { color: var(--text-secondary); margin-bottom: 20px; }
.empty-actions { margin-bottom: 16px; }
.empty-hint {
    color: var(--text-muted) !important;
    font-size: 13px;
}
.empty-hint code {
    background: var(--bg-card);
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--accent);
}

/* ─── Snapshot Header ─── */
.snapshot-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
.snapshot-meta {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ─── Raw Output ─── */
.raw-output-section {
    margin-top: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 16px;
}
.raw-output-section summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 4px 0;
}
.raw-output {
    margin-top: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
    font-size: 11px;
    color: var(--text-secondary);
    overflow-x: auto;
    white-space: pre-wrap;
    max-height: 500px;
    overflow-y: auto;
}

/* ─── Chart container ─── */
.card canvas {
    padding: 16px;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
    .topnav { padding: 0 12px; }
    .container { padding: 12px; }
    .system-bar { gap: 12px; }
    .refresh-controls { margin-left: 0; }
    .boards-grid { grid-template-columns: 1fr; }
    .metrics-grid { grid-template-columns: 1fr; }
}