/**
 * AI Engine Selector Styles
 * ==========================
 */

.ai-engine-selector {
    margin-bottom: 1.5rem;
}

.ai-engine-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.ai-engine-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.ai-engine-icon {
    font-size: 1.2rem;
}

.ai-engine-settings-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 1.1rem;
}

.ai-engine-settings-link:hover {
    background: rgba(99, 102, 241, 0.2);
    transform: scale(1.05);
}

/* Engine Grid */
.ai-engine-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

/* Engine Card */
.ai-engine-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 1.25rem;
    background: var(--surface-primary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
}

.ai-engine-card:hover:not(.disabled) {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
    transform: translateY(-2px);
}

.ai-engine-card.active {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(99, 102, 241, 0.02));
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.2);
}

.ai-engine-card.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--surface-secondary);
}

/* Card Header */
.ai-engine-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.ai-engine-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.ai-engine-card:hover:not(.disabled) .ai-engine-card-icon {
    transform: scale(1.1);
}

.ai-engine-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.ai-engine-badge.active {
    background: rgba(34, 197, 94, 0.15);
    color: #16a34a;
}

.ai-engine-badge.disabled {
    background: rgba(239, 68, 68, 0.15);
    color: #dc2626;
}

/* Card Body */
.ai-engine-card-body {
    flex: 1;
}

.ai-engine-card-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
}

.ai-engine-card-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.ai-engine-card-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.ai-engine-card-model {
    flex: 1;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ai-engine-card-keys {
    flex-shrink: 0;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    background: rgba(99, 102, 241, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-weight: 600;
}

/* Empty State */
.ai-engine-empty {
    text-align: center;
    padding: 3rem 1.5rem;
    background: var(--surface-secondary);
    border: 2px dashed var(--border-color);
    border-radius: 12px;
}

.ai-engine-empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.ai-engine-empty-text {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Compact Mode */
.ai-engine-selector.compact .ai-engine-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
}

.ai-engine-selector.compact .ai-engine-card {
    padding: 1rem;
}

.ai-engine-selector.compact .ai-engine-card-icon {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
}

.ai-engine-selector.compact .ai-engine-card-name {
    font-size: 0.95rem;
}

.ai-engine-selector.compact .ai-engine-card-description {
    font-size: 0.8rem;
}

/* Inline Mode (Horizontal) */
.ai-engine-selector.inline .ai-engine-grid {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 0.75rem;
    padding-bottom: 0.5rem;
}

.ai-engine-selector.inline .ai-engine-card {
    min-width: 240px;
    flex-shrink: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .ai-engine-grid {
        grid-template-columns: 1fr;
    }

    .ai-engine-selector.inline .ai-engine-grid {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .ai-engine-card {
        padding: 1rem;
    }

    .ai-engine-card-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }

    .ai-engine-card-name {
        font-size: 1rem;
    }
}

/* Animations */
@keyframes engineCardSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ai-engine-card {
    animation: engineCardSlideIn 0.3s ease-out;
}

.ai-engine-card:nth-child(1) { animation-delay: 0s; }
.ai-engine-card:nth-child(2) { animation-delay: 0.05s; }
.ai-engine-card:nth-child(3) { animation-delay: 0.1s; }
.ai-engine-card:nth-child(4) { animation-delay: 0.15s; }

/* Active Pulse Effect */
.ai-engine-card.active::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-color), rgba(99, 102, 241, 0.5));
    z-index: -1;
    opacity: 0.3;
    animation: activePulse 2s ease-in-out infinite;
}

@keyframes activePulse {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.02);
    }
}