body {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}
.container {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
h1 {
    color: #333;
    text-align: center;
    margin-bottom: 30px;
}
.input-section {
    margin-bottom: 30px;
}
label {
    display: block;
    margin-bottom: 10px;
    font-weight: bold;
    color: #555;
}
textarea {
    width: 100%;
    height: 150px;
    padding: 8px;
    margin-left: -10px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-family: monospace;
    font-size: 14px;
    resize: vertical;
}
button {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: transform 0.2s;
}
button:hover {
    transform: translateY(-2px);
}
.result {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
    border-left: 5px solid #28a745;
}
.result h3 {
    color: #28a745;
    margin-top: 0;
}
.hours-list {
    background: #e9ecef;
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
    font-family: monospace;
}
.error {
    background: #f8d7da;
    color: #721c24;
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    border-left: 5px solid #dc3545;
}
.example {
    background: #d1ecf1;
    padding: 15px;
    border-radius: 8px;
    margin-top: 15px;
    font-size: 14px;
}
.quick-buttons {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}
.quick-buttons button {
    padding: 8px 16px;
    font-size: 14px;
}