:root {
    --bg-color: #1a1a1a;
    --container-bg: #222;
    --text-color: #ffffff;
    --h1-color: #f0f0f0;
    --number-bg: #333;
    --border-color: #444;
    --gradient: linear-gradient(45deg, #333, #111);
}

[data-theme="light"] {
    --bg-color: #f0f0f0;
    --container-bg: #ffffff;
    --text-color: #333333;
    --h1-color: #222222;
    --number-bg: #e0e0e0;
    --border-color: #dddddd;
    --gradient: linear-gradient(45deg, #e0e0e0, #f0f0f0);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Arial', sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    background-image: var(--gradient);
    text-align: center;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.contact-section {
    margin-top: 50px;
    width: 100%;
    max-width: 500px;
    padding: 30px;
    border-radius: 20px;
    background-color: var(--container-bg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
}

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

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    text-align: left;
}

.contact-form label {
    font-size: 0.9em;
    font-weight: bold;
}

.contact-form input,
.contact-form textarea {
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: inherit;
}

.contact-form button {
    padding: 12px;
    border: none;
    border-radius: 8px;
    background-color: #2196f3;
    color: white;
    font-size: 1em;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.contact-form button:hover {
    background-color: #1976d2;
}

.container {
    padding: 40px;
    border-radius: 20px;
    background-color: var(--container-bg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.theme-toggle {
    text-align: right;
    margin-bottom: 20px;
}

#theme-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 5px 10px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9em;
}

h1 {
    font-size: 3em;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--h1-color);
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
}

.number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--number-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8em;
    font-weight: bold;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, background-color 0.3s ease;
}

#generate-btn {
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    background-color: #4CAF50;
    color: white;
    font-size: 1.2em;
    cursor: pointer;
    transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
}

#generate-btn:hover {
    background-color: #5cb85c;
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.6);
    transform: translateY(-2px);
}

#generate-btn:active {
    transform: translateY(1px);
}