/* CSS Functions Visualizer Styles */

:root {
    --base-size: 50px;
    --viewport-factor: 5vw;
    --multiplier: 1.5;
    --primary-color: #3498db;
    --secondary-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --border-radius: 8px;
}

/* Controls */
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.control-group label {
    font-weight: 600;
    color: #333;
    font-size: 0.9rem;
}

.control-group input[type="range"] {
    width: 120px;
}

.control-group span {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.85rem;
    min-width: 60px;
    text-align: center;
}

/* Function Sections */
.function-sections {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.function-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.function-section h2 {
    margin: 0 0 1rem 0;
    color: #333;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

/* Function Element Base Styles */
.function-element {
    padding: 1rem;
    margin: 0.5rem 0;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-width 0.3s ease;
    background: #ffffff;
    border: 2px solid #e1e8ed;
    text-align: center;
    font-weight: 500;
    min-height: 60px;
    height: fit-content;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.function-element::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.function-element:hover::before {
    transform: scaleX(1);
}

/* calc() Function Styles */
.calc-addition {
    width: calc(var(--base-size) + 2rem);
    background: linear-gradient(45deg, #e8f5e8, #c8e6c9);
    border-color: var(--success-color);
}

.calc-subtraction {
    width: calc(100% - 30px);
    background: linear-gradient(45deg, #fff3e0, #ffcc02);
    border-color: var(--warning-color);
}

.calc-multiplication {
    font-size: calc(1rem * var(--multiplier));
    background: linear-gradient(45deg, #e3f2fd, #90caf9);
    border-color: var(--primary-color);
}

.calc-division {
    width: calc(100vw / 4);
    max-width: 400px;
    background: linear-gradient(45deg, #fce4ec, #f48fb1);
    border-color: var(--secondary-color);
}

.calc-complex {
    width: calc((100% - 40px) / 3 + 10px);
    background: linear-gradient(45deg, #f3e5f5, #ce93d8);
    border-color: #9c27b0;
    font-size: 0.9rem;
}

/* min() Function Styles */
.min-basic {
    width: min(300px, 50vw);
    background: linear-gradient(135deg, #e8f5e8, #a5d6a7);
    border-color: var(--success-color);
}

.min-multiple {
    width: min(200px, 30vw, 50%);
    background: linear-gradient(135deg, #e1f5fe, #4fc3f7);
    border-color: #0288d1;
}

.min-with-calc {
    width: min(calc(100% - 20px), 400px);
    background: linear-gradient(135deg, #f1f8e9, #8bc34a);
    border-color: #689f38;
}

.min-responsive {
    width: min(80vw, 600px);
    background: linear-gradient(135deg, #e8eaf6, #7986cb);
    border-color: #3f51b5;
}

/* max() Function Styles */
.max-basic {
    width: max(200px, 20vw);
    background: linear-gradient(135deg, #fff8e1, #ffb74d);
    border-color: var(--warning-color);
}

.max-multiple {
    width: max(100px, 10vw, 25%);
    background: linear-gradient(135deg, #fce4ec, #f06292);
    border-color: #e91e63;
}

.max-with-calc {
    width: max(calc(50% + 10px), 150px);
    background: linear-gradient(135deg, #f3e5f5, #ba68c8);
    border-color: #9c27b0;
}

.max-responsive {
    width: max(50vw, 300px);
    background: linear-gradient(135deg, #e0f2f1, #4db6ac);
    border-color: #00695c;
}

/* clamp() Function Styles */
.clamp-basic {
    width: clamp(100px, 25vw, 300px);
    background: linear-gradient(135deg, #e8f5e8, #66bb6a);
    border-color: var(--success-color);
}

.clamp-font {
    font-size: clamp(1rem, 4vw, 2.5rem);
    background: linear-gradient(135deg, #e3f2fd, #42a5f5);
    border-color: var(--primary-color);
    height: auto;
    min-height: clamp(60px, 10vw, 120px);
}

.clamp-with-calc {
    width: clamp(50px, calc(10vw + 1rem), 200px);
    background: linear-gradient(135deg, #fff3e0, #ff9800);
    border-color: var(--warning-color);
}

.clamp-complex {
    width: clamp(calc(100px + 1rem), 50vw, calc(500px - 2rem));
    background: linear-gradient(135deg, #fce4ec, #ec407a);
    border-color: var(--secondary-color);
}

.clamp-spacing {
    padding: clamp(1rem, 5vw, 4rem);
    background: linear-gradient(135deg, #f3e5f5, #ab47bc);
    border-color: #8e24aa;
}

/* Combined Functions */
.combined-1 {
    width: max(min(50vw, 400px), 200px);
    background: linear-gradient(45deg, #e8eaf6, #5c6bc0, #3f51b5);
    border-color: #3f51b5;
}

.combined-2 {
    width: clamp(100px, calc(50vw - 2rem), max(300px, 25vw));
    background: linear-gradient(45deg, #e1f5fe, #26c6da, #00acc1);
    border-color: #00acc1;
    font-size: 0.9rem;
}

.combined-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
    gap: 10px;
    background: linear-gradient(45deg, #f1f8e9, #9ccc65, #689f38);
    border-color: #689f38;
    min-height: 80px;
}

.combined-3::after {
    content: 'Grid cells resize dynamically';
    grid-column: 1 / -1;
    text-align: center;
    font-size: 0.8rem;
    color: #333;
}

/* Hover Effects */
.function-element:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    border-color: var(--primary-color);
}

/* Viewport Info */
.viewport-info {
    margin-top: 2rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: var(--border-radius);
    text-align: center;
    color: #666;
}

.viewport-info p {
    margin: 0.5rem 0;
}

.viewport-info span {
    font-weight: 600;
    color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .controls {
        flex-direction: column;
        gap: 1rem;
    }
    
    .control-group {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .function-element {
        margin: 0.25rem 0;
        min-height: 50px;
        font-size: 0.9rem;
    }
    
    .function-sections {
        gap: 1rem;
    }
    
    .function-section {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .function-element {
        font-size: 0.8rem;
        padding: 0.75rem;
    }
    
    .clamp-font {
        line-height: 1.2;
    }
}