/* Performance Page Styles */

/* Top-level tabs use anchor tags styled as tab-buttons */
.dashboard-tabs .tab-button {
    text-decoration: none;
}

/* Sub-tabs for Parts & Material */
.performance-sub-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 24px;
    padding: 4px;
    background: #f1f5f9;
    border-radius: 8px;
}

.sub-tab-button {
    padding: 10px 18px;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: #64748b;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.sub-tab-button * {
    pointer-events: none;
}

.sub-tab-button:hover {
    color: #0f172a;
    background: #e2e8f0;
}

.sub-tab-button.active {
    color: #059669;
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.sub-tab-button i {
    font-size: 14px;
}

/* Placeholder content for tabs not yet built */
.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 24px;
    text-align: center;
    color: #94a3b8;
    background: #f8fafc;
    border-radius: 12px;
    border: 2px dashed #e2e8f0;
}

.placeholder-content i {
    font-size: 48px;
    margin-bottom: 16px;
    color: #cbd5e1;
}

.placeholder-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: #64748b;
    margin: 0 0 8px 0;
}

.placeholder-content p {
    font-size: 14px;
    margin: 0;
    color: #94a3b8;
}