/* Import Data Source Picker Styles - Dark Theme */

.import-data-source-picker {
    padding: var(--spacing-8);
    max-width: 800px;
    margin: 0 auto;
}

.picker-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.picker-header h2 {
    margin: 0 0 var(--spacing-3) 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.picker-header p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Data Sources Grid */

.data-sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-5);
}

/* Data Source Tile */

.data-source-tile {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-5);
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-default);
    text-align: left;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.data-source-tile::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--color-brand-primary);
    transform: scaleY(0);
    transition: transform var(--duration-default) var(--ease-smooth);
}

.data-source-tile:hover {
    background: var(--color-surface-overlay);
    border-color: var(--color-border-emphasis);
    box-shadow: var(--shadow-md);
}

.data-source-tile:hover::before {
    transform: scaleY(1);
}

.data-source-tile:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* Tile Icon */

.tile-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
}

.tile-icon svg {
    width: 24px;
    height: 24px;
}

/* Tile Content */

.tile-content {
    flex: 1;
    min-width: 0;
}

.tile-title {
    margin: 0 0 var(--spacing-1) 0;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.tile-description {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
}

/* Tile Arrow */

.tile-arrow {
    flex-shrink: 0;
    color: var(--color-text-secondary);
    opacity: 0;
    transform: translateX(-8px);
    transition: all var(--duration-default) var(--ease-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tile-arrow svg {
    width: 20px;
    height: 20px;
}

.data-source-tile:hover .tile-arrow {
    opacity: 1;
    transform: translateX(0);
    color: var(--color-brand-primary);
}

/* Responsive Design */

@media (max-width: 640px) {
    .data-sources-grid {
        grid-template-columns: 1fr;
    }

    .data-source-tile {
        padding: var(--spacing-4);
    }

    .tile-icon {
        width: 40px;
        height: 40px;
    }

    .tile-icon svg {
        width: 20px;
        height: 20px;
    }

    .tile-title {
        font-size: var(--font-size-sm);
    }

    .tile-description {
        font-size: var(--font-size-xs);
    }
}