/* ============================================================================
   UTILITIES & STATES
   Helper classes, loading states, error states, search highlighting
   ============================================================================ */

/* Utility Classes */
.hidden {
    display: none;
}

.controls-label {
    color: #cbd5e1;
}

.section-description {
    color: #94a3b8;
    margin-bottom: 24px;
}

.controls-flex {
    margin-bottom: 24px;
    display: flex;
    gap: 16px;
    align-items: center;
}

/* Loading States */
.loading {
    text-align: center;
    padding: 32px;
    color: #64748b;
}

/* Error States */
.error {
    background: #991b1b;
    color: #fecaca;
    padding: 16px;
    border-radius: 6px;
    margin: 16px 0;
}

.update-banner {
    display: none;
    align-items: center;
    background: #854d0e;
    color: #fef3c7;
    padding: 12px 16px;
    margin: 0;
    border-bottom: 1px solid #a16207;
    font-size: 0.9rem;
}

.update-banner code {
    background: rgba(0, 0, 0, 0.2);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Monaco', 'Courier New', monospace;
}

.update-download-btn {
    margin-left: 1rem;
    padding: 6px 12px;
    background: #fef3c7;
    color: #854d0e;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
}

.update-download-btn:hover {
    background: #fde68a;
}

/* API Key Banner */
.api-key-banner {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #1e3a5f;
    color: #93c5fd;
    padding: 8px 16px;
    border-bottom: 1px solid #2563eb;
    font-size: 0.9rem;
}

.api-key-banner input {
    padding: 4px 8px;
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 4px;
    color: #f8fafc;
    font-size: 0.85rem;
    width: 280px;
}

.api-key-banner button {
    padding: 4px 12px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}

.api-key-banner button:hover {
    background: #1d4ed8;
}

.api-key-banner .api-key-set {
    background: #065f46;
    border-color: #059669;
    color: #6ee7b7;
}

.validation-error {
    background: #991b1b;
    color: #fecaca;
    padding: 16px;
    border-radius: 6px;
    margin-top: 16px;
}

/* Search Result Highlighting */
mark {
    background: #fbbf24;
    color: #0f172a;
    padding: 1px 2px;
    border-radius: 2px;
    font-weight: 600;
}