/* ============================================
   CLIP TUTORIAL - COMPONENT STYLES
   Multimodal components and visualizations
   ============================================ */

/* ============================================
   LEARNING GRID
   ============================================ */

.learning-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
    margin: var(--space-md) 0;
}

.learning-item {
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-base);
}

.learning-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-4px);
}

.learning-item .icon {
    font-size: 3rem;
    margin-bottom: var(--space-sm);
}

.learning-item h4 {
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.learning-item p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============================================
   MULTIMODAL BOXES
   ============================================ */

.dual-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin: var(--space-md) 0;
}

.image-column {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(251, 146, 60, 0.1) 100%);
    border: 2px solid rgba(245, 158, 11, 0.3);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
}

.text-column {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(96, 165, 250, 0.1) 100%);
    border: 2px solid rgba(59, 130, 246, 0.3);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
}

.column-title {
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.image-column .column-title {
    color: var(--color-image);
}

.text-column .column-title {
    color: var(--color-text);
}

/* ============================================
   SPECIAL BOXES
   ============================================ */

.highlight-box {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-left: 4px solid var(--accent-primary);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    margin: var(--space-md) 0;
}

.formula-box {
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(0, 212, 255, 0.3);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    margin: var(--space-md) 0;
    text-align: center;
}

.main-formula {
    font-family: var(--font-code);
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin: var(--space-sm) 0;
}

.formula-step {
    font-family: var(--font-code);
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin: var(--space-xs) 0;
}

.note {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: italic;
    margin-top: var(--space-xs);
}

/* ============================================
   CLIP VISUALIZATIONS
   ============================================ */

.contrastive-viz,
.encoder-viz,
.training-viz,
.zeroshot-viz,
.similarity-viz,
.embedding-viz {
    padding: var(--space-lg);
    background: rgba(0, 0, 0, 0.4);
    border-radius: var(--radius-lg);
    margin: var(--space-md) 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contrastive-viz canvas,
.encoder-viz canvas,
.training-viz canvas,
.zeroshot-viz canvas,
.similarity-viz canvas,
.embedding-viz canvas {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.2);
    margin-bottom: var(--space-md);
}

.animation-controls {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.animation-status {
    margin-top: var(--space-md);
    padding: var(--space-sm);
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-sm);
    text-align: center;
    color: var(--accent-primary);
    font-weight: 500;
}

/* ============================================
   SIMILARITY MATRIX / HEATMAP
   ============================================ */

.heatmap-container {
    display: flex;
    justify-content: center;
    margin: var(--space-md) 0;
}

.heatmap-grid {
    display: grid;
    gap: 2px;
    padding: var(--space-sm);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
}

.heatmap-cell {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    border-radius: 4px;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.heatmap-cell:hover {
    transform: scale(1.1);
    z-index: 10;
}

.heatmap-cell.positive {
    background: var(--color-similarity);
    color: white;
}

.heatmap-cell.negative {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
}

/* ============================================
   COMPARISON TABLE
   ============================================ */

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-md) 0;
}

.comparison-table th,
.comparison-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.comparison-table th {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-primary);
    font-weight: 600;
}

.comparison-table td {
    color: var(--text-secondary);
}

.comparison-table .highlight {
    color: var(--color-similarity);
    font-weight: 600;
}

/* ============================================
   CODE BLOCKS
   ============================================ */

.code-block {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin: var(--space-md) 0;
    overflow-x: auto;
}

.code-block pre {
    font-family: var(--font-code);
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.code-block code {
    font-family: var(--font-code);
}

/* ============================================
   PAIR DISPLAY
   ============================================ */

.pair-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
    margin: var(--space-md) 0;
}

.pair-card {
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.pair-card.positive {
    border-color: var(--color-similarity);
}

.pair-card.negative {
    border-color: rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

.pair-image,
.pair-text {
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
}

.pair-image {
    background: rgba(245, 158, 11, 0.1);
    border-left: 3px solid var(--color-image);
}

.pair-text {
    background: rgba(59, 130, 246, 0.1);
    border-left: 3px solid var(--color-text);
}

/* ============================================
   APPLICATION CARDS
   ============================================ */

.application-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
    margin: var(--space-md) 0;
}

.application-card {
    padding: var(--space-lg);
    background: rgba(16, 185, 129, 0.05);
    border: 2px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-md);
}

.application-card h4 {
    color: var(--color-similarity);
    margin-bottom: var(--space-sm);
}

.application-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.application-card .example {
    font-style: italic;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   ENCODER BOXES
   ============================================ */

.encoder-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    margin: var(--space-md) 0;
}

.encoder-box {
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    text-align: center;
}

.image-encoder {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(251, 146, 60, 0.1) 100%);
    border: 2px solid var(--color-image);
}

.text-encoder {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(96, 165, 250, 0.1) 100%);
    border: 2px solid var(--color-text);
}

.encoder-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.image-encoder .encoder-title {
    color: var(--color-image);
}

.text-encoder .encoder-title {
    color: var(--color-text);
}

.encoder-flow {
    font-family: var(--font-code);
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: var(--space-xs) 0;
}

/* ============================================
   COMPLETION BOX
   ============================================ */

.completion-box {
    background: var(--gradient-primary);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    text-align: center;
}

.completion-box h4 {
    font-size: 1.5rem;
    margin: var(--space-md) 0;
    color: white;
}

.completion-box ul {
    list-style: none;
    margin: var(--space-md) 0;
    text-align: left;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.completion-box li {
    padding: var(--space-xs) 0;
    color: rgba(255, 255, 255, 0.9);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {

    .dual-column,
    .encoder-pair {
        grid-template-columns: 1fr;
    }

    .learning-grid,
    .application-grid {
        grid-template-columns: 1fr;
    }

    .heatmap-cell {
        width: 30px;
        height: 30px;
        font-size: 0.625rem;
    }
}