:root {
    --background: #1a1a2e;
    --controls: #242435;
    --accent: #4361ee;
    --text: #e2e2e2;
    --manhattan: #4ecdc4;
    --euclidean: #ff6b6b;
    --grid: #2a2a3e;
}

/* Base Styles */
html, body {
    margin: 0;
    padding: 0;
    background: var(--background);
    font-family: 'Segoe UI', system-ui, sans-serif;
    color: var(--text);
    line-height: 1.6;
}

/* Layout */
.container {
    max-width: 800px;
    margin: 20px auto;
    padding: 0 20px;
}

.canvas-wrapper {
    background: var(--controls);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

#sketch-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

/* Canvas */
canvas {
    display: block;
    border-radius: 8px;
    image-rendering: -moz-crisp-edges;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Controls */
.controls {
    margin: 20px 0;
    background: var(--controls);
    padding: 20px;
    border-radius: 12px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Form Elements */
input[type="range"] {
    width: 120px;
    height: 4px;
    background: #343450;
    border-radius: 2px;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s;
}

select, button {
    background: #343450;
    color: var(--text);
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

select:hover, button:hover {
    background: #3d3d5a;
    transform: translateY(-1px);
}

/* Text Content */
.header {
    text-align: center;
    margin-bottom: 2rem;
}

h1 {
    color: var(--accent);
    margin: 0;
    font-size: 2.2rem;
}

.subtitle {
    color: var(--text);
    opacity: 0.9;
    margin: 0.5rem 0 2rem;
    font-size: 1.1rem;
}

.info-panel {
    margin: 2rem 0;
    display: grid;
    gap: 20px;
}

.info-card {
    background: var(--controls);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.info-card h2 {
    margin-top: 0;
    font-size: 1.3rem;
    color: var(--accent);
}

.info-card h2 i {
    margin-right: 10px;
}

.algorithm-points {
    display: grid;
    gap: 1.5rem;
}

.algorithm-points > div {
    background: rgba(255,255,255,0.05);
    padding: 1rem;
    border-radius: 8px;
}

.algorithm-points h3 {
    margin: 0 0 0.5rem;
    font-size: 1rem;
    color: var(--accent);
}

.algorithm-points h3 i {
    margin-right: 8px;
    width: 20px;
}

.algorithm-points p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.4;
}

ul {
    padding-left: 1.2rem;
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 10px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .controls {
        grid-template-columns: 1fr;
    }
    
    .algorithm-points {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .control-group {
        flex-direction: column;
        align-items: flex-start;
    }
    
    select, button {
        width: 100%;
    }
}