/**
 * Common Demo Button Styles
 * Unified button styling system with customizable colors
 */

/* Button Color Variables - easily customizable */
:root {
    /* Primary Action Buttons */
    --btn-primary-bg: #28a745;
    --btn-primary-hover: #218838;
    --btn-primary-active: #1e7e34;
    --btn-primary-text: white;

    /* Secondary Action Buttons */
    --btn-secondary-bg: #6c757d;
    --btn-secondary-hover: #5a6268;
    --btn-secondary-active: #495057;
    --btn-secondary-text: white;

    /* Danger/Delete Buttons */
    --btn-danger-bg: #dc3545;
    --btn-danger-hover: #c82333;
    --btn-danger-active: #bd2130;
    --btn-danger-text: white;

    /* Success/Step Buttons */
    --btn-success-bg: #4caf50;
    --btn-success-hover: #45a049;
    --btn-success-active: #3d8b40;
    --btn-success-text: white;

    /* Warning Buttons */
    --btn-warning-bg: #ffc107;
    --btn-warning-hover: #e0a800;
    --btn-warning-active: #d39e00;
    --btn-warning-text: #212529;

    /* Info Buttons */
    --btn-info-bg: #17a2b8;
    --btn-info-hover: #138496;
    --btn-info-active: #117a8b;
    --btn-info-text: white;

    /* Disabled State */
    --btn-disabled-bg: #cccccc;
    --btn-disabled-text: #666666;

    /* Button Base Styles */
    --btn-border-radius: 0;
    --btn-font-weight: bold;
    --btn-transition: all 0.2s ease;
    --btn-border: none;
}

/* Base Button Style */
.btn,
button:not(.tab-btn):not(.network-node) {
    padding: 10px 16px;
    border: var(--btn-border);
    border-radius: var(--btn-border-radius);
    font-weight: var(--btn-font-weight);
    cursor: pointer;
    transition: var(--btn-transition);
    font-size: 14px;
    text-align: center;
    display: inline-block;
    text-decoration: none;
    line-height: 1.2;
    min-width: auto;
}

/* Button Variants */
.btn-primary, .solution-btn {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
}

.btn-primary:hover, .solution-btn:hover {
    background: var(--btn-primary-hover);
}

.btn-primary:active, .solution-btn:active {
    background: var(--btn-primary-active);
}

.btn-secondary, .generate-data-btn {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
}

.btn-secondary:hover, .generate-data-btn:hover {
    background: var(--btn-secondary-hover);
}

.btn-secondary:active, .generate-data-btn:active {
    background: var(--btn-secondary-active);
}

.btn-danger, .clear-data-btn, .reset-btn {
    background: var(--btn-danger-bg);
    color: var(--btn-danger-text);
}

.btn-danger:hover, .clear-data-btn:hover, .reset-btn:hover {
    background: var(--btn-danger-hover);
}

.btn-danger:active, .clear-data-btn:active, .reset-btn:active {
    background: var(--btn-danger-active);
}

.btn-success, .step-btn {
    background: var(--btn-success-bg);
    color: var(--btn-success-text);
}

.btn-success:hover, .step-btn:hover:not(:disabled) {
    background: var(--btn-success-hover);
}

.btn-success:active, .step-btn:active {
    background: var(--btn-success-active);
}

.btn-warning {
    background: var(--btn-warning-bg);
    color: var(--btn-warning-text);
}

.btn-warning:hover {
    background: var(--btn-warning-hover);
}

.btn-warning:active {
    background: var(--btn-warning-active);
}

.btn-info {
    background: var(--btn-info-bg);
    color: var(--btn-info-text);
}

.btn-info:hover {
    background: var(--btn-info-hover);
}

.btn-info:active {
    background: var(--btn-info-active);
}

/* Disabled State */
.btn:disabled,
.step-btn:disabled,
button:disabled {
    background: var(--btn-disabled-bg) !important;
    color: var(--btn-disabled-text) !important;
    cursor: not-allowed !important;
    opacity: 0.6;
}

/* Button Sizes */
.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

.btn-xl {
    padding: 16px 32px;
    font-size: 18px;
}

/* Button Groups */
.btn-group {
    display: flex;
    gap: 10px;
}

.btn-group .btn {
    flex: 1;
}

/* Full Width Buttons */
.btn-block {
    width: 100%;
    display: block;
}

/* Special Button Containers */
.plot-buttons {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.plot-buttons .btn {
    flex: 1;
}

.step-controls {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

/* Dataset Buttons - Special styling for themed buttons */
.dataset-btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--btn-border-radius);
    font-weight: 500;
    font-size: 13px;
    cursor: pointer;
    transition: var(--btn-transition);
    color: white;
}

.dataset-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* Themed dataset button variants */
.structures-btn {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.structures-btn:hover {
    background: linear-gradient(135deg, #c0392b, #a93226);
}

.geotech-btn {
    background: linear-gradient(135deg, #8e44ad, #7d3c98);
}

.geotech-btn:hover {
    background: linear-gradient(135deg, #7d3c98, #6c3483);
}

.transport-btn {
    background: linear-gradient(135deg, #3498db, #2980b9);
}

.transport-btn:hover {
    background: linear-gradient(135deg, #2980b9, #2471a3);
}

.environment-btn {
    background: linear-gradient(135deg, #27ae60, #229954);
}

.environment-btn:hover {
    background: linear-gradient(135deg, #229954, #1e8449);
}

/* Neural Network specific buttons */
.add-layer-btn, .remove-layer-btn {
    padding: 5px 10px;
    font-size: 12px;
    border-radius: var(--btn-border-radius);
    border: 1px solid #ddd;
    cursor: pointer;
    background: white;
}

.add-layer-btn {
    background: var(--btn-success-bg);
    color: var(--btn-success-text);
    border-color: var(--btn-success-bg);
}

.add-layer-btn:disabled {
    background: var(--btn-disabled-bg);
    color: var(--btn-disabled-text);
    border-color: var(--btn-disabled-bg);
    cursor: not-allowed;
}

.remove-layer-btn {
    background: var(--btn-danger-bg);
    color: var(--btn-danger-text);
    border-color: var(--btn-danger-bg);
}

.remove-layer-btn:disabled {
    background: var(--btn-disabled-bg);
    color: var(--btn-disabled-text);
    border-color: var(--btn-disabled-bg);
    cursor: not-allowed;
}

/* Backpropagation specific buttons */
.step-button {
    padding: 8px 16px;
    background: var(--btn-success-bg);
    color: var(--btn-success-text);
    border: none;
    border-radius: var(--btn-border-radius);
    font-weight: bold;
    cursor: pointer;
    transition: var(--btn-transition);
}

.step-button:hover {
    background: var(--btn-success-hover);
}

.step-button:disabled {
    background: var(--btn-disabled-bg);
    color: var(--btn-disabled-text);
    cursor: not-allowed;
}

.reset-button {
    padding: 8px 16px;
    background: var(--btn-danger-bg);
    color: var(--btn-danger-text);
    border: none;
    border-radius: var(--btn-border-radius);
    font-weight: bold;
    cursor: pointer;
    transition: var(--btn-transition);
}

.reset-button:hover {
    background: var(--btn-danger-hover);
}

/* Demo-specific color overrides can be done by redefining CSS variables */
/*
Example: To customize colors for a specific demo, add this to the demo's style.css:

:root {
    --btn-primary-bg: #your-custom-color;
    --btn-primary-hover: #your-custom-hover-color;
    --btn-primary-active: #your-custom-active-color;
}
*/

/**
 * Common Demo Layout Components
 * Shared layout patterns used across multiple demos
 */

/* Control Groups */
.control-group {
    margin-bottom: 15px;
}

.control-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.control-row label {
    min-width: 150px;
    font-weight: 500;
}

.control-row input[type="number"] {
    width: 100px;
    padding: 5px;
    border: 1px solid #ddd;
    border-radius: 0;
}

/* View Panels */
.view-panel {
    background: white;
    border: 2px solid #ddd;
    border-radius: 0;
    padding: 15px;
    min-height: 450px;
}

.view-title {
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Readout Panels */
.readout-panel {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 0;
    padding: 15px;
    font-family: monospace;
}

.readout-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    padding: 2px 0;
}

.readout-label {
    font-weight: bold;
    color: #495057;
}

.readout-value {
    color: #007bff;
    font-weight: bold;
}

/* Caption Text */
.caption-text {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 0;
    padding: 12px;
    margin: 15px 0;
    font-style: italic;
    color: #6c757d;
    line-height: 1.4;
    min-height: 20px;
}

/* Dataset Info Box */
.dataset-info-box {
    margin-top: 15px;
    padding: 15px;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 0;
    box-sizing: border-box;
    display: none;
    animation: slideDown 0.3s ease-out;
}

.dataset-info-box.show {
    display: block;
}

.dataset-info-title {
    font-weight: bold;
    color: #495057;
    margin-bottom: 8px;
}

.dataset-info-description {
    color: #6c757d;
    margin-bottom: 10px;
    line-height: 1.4;
}

.dataset-info-variables {
    font-family: monospace;
    font-size: 13px;
    color: #495057;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Controls Bottom Grid */
.controls-bottom {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 0;
    padding: 20px;
    margin-top: 20px;
}

.controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
    align-items: start;
}

@media (max-width: 768px) {
    .controls-grid {
        grid-template-columns: 1fr;
    }
}

/* Equation Labels */
.equation-label {
    position: absolute;
    bottom: 4px;
    right: 8px;
    font-size: 12px;
    opacity: 0.7;
    font-style: italic;
    text-align: right;
}

/* Dataset Buttons Section */
.dataset-buttons-section {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid #ddd;
}

.dataset-section-label {
    display: block;
    font-weight: bold;
    margin-bottom: 10px;
    color: #495057;
}

.dataset-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

@media (max-width: 600px) {
    .dataset-buttons {
        grid-template-columns: 1fr;
    }
}


/* Base Equation Box Styling */
.equation {
    background: #f0f8ff;
    padding: 0 15px 15px 15px;
    border-radius: 0;
    text-align: center;
    font-size: 16px;
    font-weight: 500;
    color: #2c3e50;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border: 1px solid #d0e0f0;
    word-break: break-all;
    overflow-wrap: break-word;
    line-height: 1.2;
    position: relative;
    margin: 10px 0;
    height: 60px;
    box-sizing: border-box;
    padding-top: 10px;
}

/* Theory Section - Full Width Box Below Demo */
.theory-section {
    border: 2px solid #ddd !important;
    border-radius: 0 !important;
    background: white !important;
    margin-top: 20px !important;
    width: 100% !important;
    box-sizing: border-box !important;
}

.theory-section h3 {
    margin: 0 !important;
    padding: 15px 20px !important;
    background: #f8f9fa !important;
    color: #2c3e50 !important;
    font-size: 16px !important;
    font-weight: 600 !important;
    border-bottom: 2px solid #ddd !important;
}

.theory-section p {
    margin: 0 !important;
    padding: 20px !important;
    line-height: 1.8 !important;
    color: #333 !important;
}

.theory-section p br {
    margin-bottom: 8px;
}

.theory-section strong {
    color: #2c3e50;
    font-weight: 600;
}

.theory-section em {
    color: #495057;
    font-style: normal;
    font-weight: 500;
}