:root {
    --tuning-card-bg: var(--surface-color, #1f2430);
}

.tuning-container {
    /* Match distributed container sizing and background */
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    background: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.dashboard-header {
    /* Mirror distributed header card */
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.page-title {
    margin: 0 0 8px 0;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dashboard-actions .btn {
    min-width: 7rem;
}

.tuning-alert {
    display: flex;
    gap: 1rem;
    align-items: center;
    padding: 1rem 1.25rem;
    border-radius: 12px;
    background: rgba(255, 193, 7, 0.12);
    border: 1px solid rgba(255, 193, 7, 0.35);
}

.tuning-alert .alert-icon {
    font-size: 1.75rem;
}

.card-grid {
    /* Align grid spacing with distributed KPI grid */
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    padding: 0 0 12px 0;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3,
.card-header h2 {
    margin: 0;
    font-size: 1.2rem;
}

.card-body {
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.status-body div,
.delta-body div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    font-size: 0.95rem;
}

.label {
    font-weight: 600;
    color: var(--text-secondary);
}

.health-body {
    gap: 1rem;
}

.health-entry {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.issue-list,
.change-list {
    margin: 0;
    padding-left: 1.25rem;
    display: grid;
    gap: 0.35rem;
}

.metrics-body {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.metric {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.75rem 1rem;
}

.metric-label {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.metric-value {
    margin: 0.35rem 0 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.severity-badge {
    align-self: flex-start;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-weight: 600;
    text-transform: capitalize;
    background: rgba(255, 255, 255, 0.08);
}

.severity-ok {
    color: #4caf50;
    background: rgba(76, 175, 80, 0.18);
}

.severity-warning {
    color: #ffb300;
    background: rgba(255, 179, 0, 0.22);
}

.severity-critical {
    color: #ff5252;
    background: rgba(255, 82, 82, 0.25);
}

.history-card {
    margin-top: 0.5rem;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.75rem;
}

.history-count {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.history-body {
    padding-top: 0.5rem;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.table thead {
    background: var(--bg-tertiary);
}

.table th,
.table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
    vertical-align: top;
}

.table-placeholder td {
    text-align: center;
    opacity: 0.7;
}

.table-body tr:hover {
    background: rgba(255, 255, 255, 0.04);
}

@media (max-width: 768px) {
    .status-body div,
    .delta-body div {
        flex-direction: column;
        gap: 0.25rem;
    }
}