:root {
    --primary-color: #ff4d4f;
    --secondary-color: #ff7875;
    --background-color: #fff;
    --text-color: #333;
    --border-radius: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    color: var(--primary-color);
    font-size: 2rem;
}

.preset-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.preset-section {
    background: var(--background-color);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.preset-section h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.preset-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.preset-option {
    background: transparent;
    border: 1px solid var(--secondary-color);
    color: var(--text-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.preset-option.selected {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.result-container {
    background: var(--background-color);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.result-text {
    min-height: 100px;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    margin: 15px 0;
    white-space: pre-wrap;
}

.button-group {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .preset-container {
        grid-template-columns: 1fr;
    }
}