/* Custom styles for Preliminaries and Linear Regression presentation */

/* Code block styling */
.reveal pre {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    margin: 1em auto;
    font-size: 0.75em;
    max-width: 95%;
}

.reveal pre code {
    padding: 1em;
    max-height: 500px;
    overflow: auto;
}

/* Output code blocks */
.reveal pre code.plaintext {
    background: #f5f5f5;
    color: #262626;
    font-weight: 500;
}

/* Tensor visualization container */
.tensor-viz {
    margin: 2em auto;
    text-align: center;
    position: relative;
}

.tensor-grid {
    display: inline-block;
    border: 2px solid var(--color-primary);
    border-radius: 8px;
    padding: 10px;
    background: rgba(16, 9, 159, 0.05);
}

.tensor-cell {
    display: inline-block;
    width: 50px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    border: 1px solid var(--color-border);
    margin: 2px;
    background: white;
    border-radius: 4px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.tensor-cell.highlighted {
    background: var(--color-accent);
    color: white;
    transform: scale(1.1);
}

/* Broadcasting visualization */
.broadcasting-viz {
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin: 2em auto;
    max-width: 90%;
}

.broadcast-tensor {
    border: 2px solid var(--color-primary);
    border-radius: 8px;
    padding: 15px;
    background: white;
    position: relative;
}

.broadcast-tensor.source {
    background: rgba(16, 9, 159, 0.1);
}

.broadcast-tensor.expanded {
    background: rgba(45, 210, 192, 0.1);
    border-color: var(--color-accent);
}

.broadcast-arrow {
    font-size: 2em;
    color: var(--color-primary);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

/* Shape labels */
.shape-label {
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 0.8em;
    font-weight: bold;
}

/* Operation visualization */
.operation-viz {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    margin: 2em auto;
}

.operation-viz .operator {
    font-size: 2em;
    font-weight: bold;
    color: var(--color-primary);
}

.operation-viz .equals {
    font-size: 2em;
    color: var(--color-success);
}

/* Memory visualization */
.memory-viz {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin: 2em auto;
    max-width: 80%;
}

.memory-block {
    display: flex;
    align-items: center;
    gap: 20px;
}

.memory-address {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    padding: 10px 15px;
    border-radius: 6px;
    font-family: 'Source Code Pro', monospace;
    font-size: 0.9em;
    min-width: 150px;
}

.memory-content {
    flex: 1;
    background: white;
    border: 2px solid var(--color-primary);
    padding: 10px 15px;
    border-radius: 6px;
    position: relative;
}

.memory-content.new {
    border-color: var(--color-error);
    background: rgba(252, 132, 132, 0.1);
}

.memory-content.reused {
    border-color: var(--color-success);
    background: rgba(45, 210, 192, 0.1);
}

/* Indexing visualization */
.indexing-viz {
    margin: 2em auto;
    max-width: 600px;
}

.index-grid {
    display: grid;
    gap: 5px;
    margin: 1em auto;
}

.index-cell {
    padding: 15px;
    text-align: center;
    border: 2px solid var(--color-border);
    background: white;
    border-radius: 4px;
    font-weight: bold;
    position: relative;
    transition: all 0.3s ease;
}

.index-cell.selected {
    background: var(--color-warning);
    border-color: var(--color-primary);
    transform: scale(1.05);
}

.index-cell .index-label {
    position: absolute;
    top: -10px;
    right: -10px;
    background: var(--color-primary);
    color: white;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7em;
}

/* Framework selector */
.framework-selector {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 1em auto;
}

.framework-btn {
    padding: 8px 20px;
    border: 2px solid var(--color-primary);
    background: white;
    color: var(--color-primary);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
}

.framework-btn:hover {
    background: var(--color-primary);
    color: white;
}

.framework-btn.active {
    background: var(--color-primary);
    color: white;
}

/* Code comparison */
.code-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 2em auto;
    max-width: 95%;
}

.code-comparison .code-block {
    position: relative;
}

.code-comparison .code-label {
    position: absolute;
    top: -10px;
    left: 20px;
    background: var(--color-primary);
    color: white;
    padding: 5px 15px;
    border-radius: 4px;
    font-size: 0.8em;
    font-weight: bold;
    z-index: 1;
}

/* Interactive demo container */
.interactive-demo {
    background: var(--color-bg);
    border: 2px solid var(--color-primary);
    border-radius: 8px;
    padding: 20px;
    margin: 2em auto;
    max-width: 90%;
}

.demo-controls {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 20px;
}

.demo-btn {
    padding: 10px 20px;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.demo-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

.demo-output {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 15px;
    font-family: 'Source Code Pro', monospace;
    min-height: 100px;
}

/* Dimension indicator */
.dim-indicator {
    display: inline-block;
    background: var(--color-primary);
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.7em;
    margin: 0 5px;
    font-weight: bold;
}

/* Utility classes */
.mt-sm { margin-top: 0.5em; }
.mt-md { margin-top: 1em; }
.mt-lg { margin-top: 2em; }

/* Animation for tensor operations */
@keyframes tensorHighlight {
    0% { background: white; }
    50% { background: var(--color-accent); color: white; }
    100% { background: white; }
}

.tensor-cell.animating {
    animation: tensorHighlight 1s ease;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .code-comparison {
        grid-template-columns: 1fr;
    }
    
    .broadcasting-viz {
        flex-direction: column;
        gap: 30px;
    }
    
    .operation-viz {
        flex-direction: column;
        gap: 15px;
    }
    
    .framework-selector {
        flex-wrap: wrap;
    }
}