* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: #fff;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 20px;
    max-width: 500px;
    width: 100%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    text-align: center;
}

h1 {
    font-size: 2em;
    margin-bottom: 10px;
    color: #ffd700;
}

.description {
    font-size: 1em;
    margin-bottom: 20px;
    color: #e0e0e0;
}

.site-button {
    background: #ffd700;
    color: #1e3c72;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    margin-bottom: 20px;
    transition: background 0.3s;
}

.site-button:hover {
    background: #ffeb3b;
}

.rulet-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.radio-group {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.radio-group label {
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.radio-group input[type="radio"]:checked + label {
    background: #ffd700;
    color: #1e3c72;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.input-group label {
    font-size: 1em;
}

.input-group input[type="number"] {
    padding: 10px;
    border: none;
    border-radius: 5px;
    font-size: 1em;
    width: 100%;
    max-width: 200px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.9);
    color: #1e3c72;
}

.submit-button {
    background: #28a745;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    transition: background 0.3s;
}

.submit-button:hover {
    background: #218838;
}

.result, .error {
    margin-top: 20px;
    padding: 15px;
    border-radius: 5px;
}

.result {
    background: rgba(255, 255, 255, 0.2);
}

.error {
    background: #dc3545;
}

@media (max-width: 600px) {
    .container {
        padding: 15px;
    }

    h1 {
        font-size: 1.5em;
    }

    .radio-group {
        flex-direction: column;
        gap: 10px;
    }

    .radio-group label {
        width: 100%;
        text-align: center;
    }

    .input-group input[type="number"] {
        max-width: 100%;
    }
}