/* ── Reset & base ─────────────────────────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-bg: #f5f7fa;
    --color-surface: #ffffff;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --color-error: #dc2626;
    --color-error-bg: #fef2f2;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
    --glass-bg: rgba(255, 255, 255, 0.82);
    --glass-border: rgba(255, 255, 255, 0.35);
}

/* ── WebGPU background canvas ────────────────────────────────────────── */
#lab-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    display: block;
}

/* ── Fallback if WebGPU is unavailable ───────────────────────────────── */
.no-webgpu {
    background: linear-gradient(135deg, #33383f 0%, #1e2328 100%) !important;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
        Arial, sans-serif;
    background: transparent;
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

/* ── Header ──────────────────────────────────────────────────────────── */
header {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1.5rem 2rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.10);
    position: relative;
    z-index: 2;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn-grafana {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1.1rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.08);
    border: 1px solid rgba(37, 99, 235, 0.25);
    border-radius: var(--radius);
    text-decoration: none;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.btn-grafana:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.subtitle {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* ── Main ────────────────────────────────────────────────────────────── */
main {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    position: relative;
    z-index: 2;
}

/* ── Controls bar ────────────────────────────────────────────────────── */
.controls {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.08);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.control-group label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.875rem;
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    min-width: 180px;
}

select:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 1px;
}

/* ── Table info ──────────────────────────────────────────────────────── */
.table-info {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.table-info span::before {
    content: "•";
    margin-right: 0.5rem;
    color: var(--color-primary);
    font-weight: 700;
}

/* ── Error banner ────────────────────────────────────────────────────── */
.error-banner {
    background: var(--color-error-bg);
    border: 1px solid var(--color-error);
    color: var(--color-error);
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

/* ── Data table ──────────────────────────────────────────────────────── */
.table-container {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.10);
    overflow-x: auto;
}

.placeholder {
    padding: 3rem;
    text-align: center;
    color: var(--color-text-muted);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

thead {
    background: rgba(245, 247, 250, 0.7);
    position: sticky;
    top: 0;
}

th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
}

td {
    padding: 0.625rem 1rem;
    border-bottom: 1px solid var(--color-border);
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

tr:hover td {
    background: rgba(248, 250, 252, 0.6);
}

/* ── Pagination ──────────────────────────────────────────────────────── */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
}

.pagination button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.pagination button:hover:not(:disabled) {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

#page-indicator {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ── Footer ──────────────────────────────────────────────────────────── */
footer {
    text-align: center;
    padding: 1.5rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    border-top: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: relative;
    z-index: 2;
}

footer a {
    color: var(--color-primary);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* ── Utilities ───────────────────────────────────────────────────────── */
.hidden {
    display: none !important;
}

.loading {
    opacity: 0.5;
    pointer-events: none;
}