body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background: rgba(255, 255, 255, 0.9);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 600px;
    text-align: center;
}

h1 {
    color: #4a2b8d;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: #666;
    margin-bottom: 2rem;
}

.input-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #444;
}

input, select {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    box-sizing: border-box;
}

button {
    background: #6c42f5;
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    transition: background 0.3s;
    margin-bottom: 1.5rem;
}

button:hover {
    background: #5532d6;
}

.copy-btn {
    background: #28a745;
}

.copy-btn:hover {
    background: #218838;
}

.result {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 6px;
    border-left: 5px solid #6c42f5;
    margin-bottom: 1.5rem;
    text-align: left;
    min-height: 50px;
}

/* Запрещаем выделение для всех элементов */
* {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}