:root {
    --bg-color: #f0f0f0;
    --container-bg: #fff;
    --text-color: #333;
    --shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --container-bg: #2d2d2d;
    --text-color: #f0f0f0;
    --shadow: rgba(0, 0, 0, 0.5);
}

body {
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    padding: 20px;
    gap: 40px;
}

.lotto-container, .contact-container {
    text-align: center;
    padding: 40px;
    border-radius: 15px;
    background-color: var(--container-bg);
    box-shadow: 0 10px 20px var(--shadow);
    transition: background-color 0.3s, box-shadow 0.3s;
    width: 100%;
    max-width: 500px;
}

.contact-container h2 {
    margin-bottom: 20px;
}

.form-group {
    text-align: left;
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: var(--container-bg);
    color: var(--text-color);
    box-sizing: border-box;
}

.form-group textarea {
    height: 100px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 10px;
    background-color: #2196F3;
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background-color: #1976D2;
}

h1 {
    margin-bottom: 30px;
}

.numbers-container {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin: 0 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: #fff;
}

.generate-btn {
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    background-color: #4caf50;
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.generate-btn:hover {
    background-color: #45a049;
}

.theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 10px;
    border: none;
    border-radius: 5px;
    background-color: var(--container-bg);
    color: var(--text-color);
    cursor: pointer;
    box-shadow: 0 2px 5px var(--shadow);
}