/**
 * The Feynman Lectures Module - Styles
 * Styling for physics learning activities, simulations, and visualizations
 */

/* Module Theme Colors */
:root {
    --feynman-primary: #3b82f6;
    --feynman-primary-50: #eff6ff;
    --feynman-primary-100: #dbeafe;
    --feynman-primary-light: #60a5fa;
    --feynman-primary-dark: #2563eb;
    --feynman-secondary: #8b5cf6;
    --feynman-accent: #06b6d4;
    --feynman-bg-soft: rgba(59, 130, 246, 0.05);
    --feynman-border: rgba(59, 130, 246, 0.2);
    --feynman-formula-bg: rgba(59, 130, 246, 0.1);
}

/* Dark theme support */
.dark-theme {
    --feynman-bg-soft: rgba(96, 165, 250, 0.1);
    --feynman-border: rgba(96, 165, 250, 0.3);
    --feynman-formula-bg: rgba(96, 165, 250, 0.15);
}

/* Main Activity Container */
.feynman-activity-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.feynman-activity {
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid var(--feynman-primary);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

/* Activity Header */
.activity-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--feynman-border);
}

.activity-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--feynman-primary);
    margin-bottom: var(--spacing-sm);
}

.activity-level {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

.activity-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Concept Cards */
.concepts-section {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.concept-card {
    background: var(--feynman-bg-soft);
    border: 2px solid var(--feynman-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
}

.concept-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(59, 130, 246, 0.15);
    border-color: var(--feynman-primary);
}

.concept-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--feynman-primary-dark);
    margin-bottom: var(--spacing-md);
}

.concept-explanation {
    font-size: 1.0625rem;
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

/* Formula Display */
.formula-display {
    background: var(--feynman-formula-bg);
    border-left: 4px solid var(--feynman-primary);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: var(--radius-md);
    font-family: 'Courier New', monospace;
    font-size: 1.25rem;
    text-align: center;
    color: var(--feynman-primary-dark);
    font-weight: 600;
}

/* Concept Sections */
.concept-questions,
.concept-examples {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--background);
    border-radius: var(--radius-md);
}

.concept-questions h4,
.concept-examples h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--feynman-primary);
    margin-bottom: var(--spacing-sm);
}

.concept-questions ul,
.concept-examples ul {
    list-style: none;
    padding: 0;
}

.concept-questions li,
.concept-examples li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-secondary);
}

.concept-questions li::before {
    content: "❓";
    position: absolute;
    left: 0;
}

.concept-examples li::before {
    content: "💡";
    position: absolute;
    left: 0;
}

/* Experiment Cards */
.concept-experiments {
    margin-top: var(--spacing-md);
}

.experiment-card {
    background: var(--background);
    border: 1px solid var(--feynman-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.experiment-card h5 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--feynman-primary);
    margin-bottom: var(--spacing-xs);
}

.experiment-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* Laws Section */
.laws-section {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.law-card {
    background: linear-gradient(135deg, var(--feynman-primary-50) 0%, var(--feynman-bg-soft) 100%);
    border: 2px solid var(--feynman-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
}

.law-card:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.law-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--feynman-primary-dark);
    margin-bottom: var(--spacing-md);
}

.law-card > p {
    font-size: 1.125rem;
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.law-explanation {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.law-examples {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-md);
}

.law-examples li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-secondary);
}

.law-examples li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--feynman-primary);
    font-weight: bold;
}

/* Equations Section */
.equations-section {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.equation-card {
    background: var(--feynman-bg-soft);
    border-left: 4px solid var(--feynman-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all 0.3s ease;
}

.equation-card:hover {
    background: var(--feynman-primary-50);
}

.equation-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--feynman-primary-dark);
    margin-bottom: var(--spacing-xs);
}

.equation-card p {
    color: var(--text-secondary);
    margin: 0;
}

/* Simulation Container */
.simulation-container {
    background: var(--background);
    border: 2px solid var(--feynman-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.simulation-container h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--feynman-primary);
    margin-bottom: var(--spacing-sm);
}

.simulation-container > p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.simulation-canvas {
    background: var(--surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed var(--feynman-border);
}

.simulation-canvas canvas {
    max-width: 100%;
    height: auto;
}

/* Simulation Controls */
.simulation-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--feynman-bg-soft);
    border-radius: var(--radius-md);
}

.simulation-controls label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 500;
}

.simulation-controls input[type="range"] {
    width: 200px;
    accent-color: var(--feynman-primary);
}

.control-value {
    min-width: 40px;
    text-align: center;
    font-weight: 600;
    color: var(--feynman-primary);
}

/* Interactive Activity */
.interactive-activity {
    background: linear-gradient(135deg, var(--feynman-primary-50) 0%, var(--feynman-bg-soft) 100%);
    border: 2px solid var(--feynman-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    text-align: center;
}

.interactive-activity h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--feynman-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.interactive-activity p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Activity Buttons */
.feynman-activity-btn {
    background: var(--feynman-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2);
}

.feynman-activity-btn:hover {
    background: var(--feynman-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.3);
}

.feynman-activity-btn:active {
    transform: translateY(0);
}

/* Run Experiment Button */
.run-experiment {
    background: var(--feynman-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.run-experiment:hover {
    background: #0891b2;
    transform: translateY(-1px);
}

/* Start Interactive Button */
.start-interactive {
    background: var(--feynman-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(59, 130, 246, 0.2);
}

.start-interactive:hover {
    background: var(--feynman-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(59, 130, 246, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .feynman-activity-container {
        padding: var(--spacing-md);
    }
    
    .activity-header h2 {
        font-size: 1.5rem;
    }
    
    .concept-card h3 {
        font-size: 1.25rem;
    }
    
    .simulation-controls {
        flex-direction: column;
    }
    
    .simulation-controls input[type="range"] {
        width: 100%;
    }
    
    .formula-display {
        font-size: 1rem;
        overflow-x: auto;
    }
}

/* Animation for concept cards */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.concept-card,
.law-card,
.equation-card {
    animation: fadeInUp 0.5s ease-out;
}

/* Print Styles */
@media print {
    .simulation-container,
    .interactive-activity,
    .feynman-activity-btn,
    .run-experiment,
    .start-interactive {
        display: none;
    }
    
    .feynman-activity {
        border: 1px solid #ccc;
        page-break-inside: avoid;
    }
}