:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --background-color: #f3f4f6;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--background-color);
    padding: 2rem;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.options-container {
    background-color: white;
    border-radius: 0.5rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.options-group h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-color);
    cursor: pointer;
}

.length-control {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.length-control input[type="range"] {
    flex: 1;
    height: 2px;
    background-color: var(--border-color);
    border-radius: 1px;
    cursor: pointer;
}

.length-control input[type="number"] {
    width: 4rem;
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    text-align: center;
}

.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.preset-buttons button {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    color: var(--text-color);
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s;
}

.preset-buttons button:hover {
    background-color: var(--border-color);
}

.editor-section {
    background-color: white;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background-color: #f9fafb;
    border-bottom: 1px solid var(--border-color);
}

.editor-header h3 {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--primary-color);
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem;
    color: var(--text-muted);
    background: none;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

.editor {
    height: 100px;
    border: none;
}

.info-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding: 1rem;
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

.info-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.info-section ul {
    padding-left: 1.25rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.info-section li {
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.info-section strong {
    color: var(--text-color);
    font-weight: 500;
}