:root {
    --primary-color: #8b5cf6;
    --primary-hover: #7c3aed;
    --background-color: #f8fafc;
    --card-background: #ffffff;
    --text-color: #1e293b;
    --border-color: #e2e8f0;
    --button-text: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --editor-background: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    width: 100%;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 1.5rem;
}

.controls-panel {
    background: var(--card-background);
    border-radius: 1rem;
    box-shadow: 0 4px 6px var(--shadow-color);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    height: fit-content;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.control-group label {
    font-weight: 500;
    color: var(--text-color);
    font-size: 0.875rem;
}

.button-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0.5rem;
}

.btn {
    background-color: var(--card-background);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

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

.btn.active {
    background-color: var(--primary-color);
    color: var(--button-text);
    border-color: var(--primary-color);
}

.btn.primary {
    background-color: var(--primary-color);
    color: var(--button-text);
    border-color: var(--primary-color);
}

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

.btn.secondary {
    background-color: var(--background-color);
}

.range-group {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1rem;
    align-items: center;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--primary-hover);
}

input[type="number"] {
    width: 60px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    text-align: center;
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    cursor: pointer;
}

.checkbox input {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    cursor: pointer;
}

.editor-container {
    background: var(--card-background);
    border-radius: 1rem;
    box-shadow: 0 4px 6px var(--shadow-color);
    overflow: hidden;
    height: 600px;
}

#editor {
    height: 100%;
    width: 100%;
}

.info-panel {
    grid-column: 1 / -1;
    background: var(--card-background);
    border-radius: 1rem;
    box-shadow: 0 4px 6px var(--shadow-color);
    padding: 1.5rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: #64748b;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

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