:root {
    --bg-color: #f0f2f5;
    --container-bg: white;
    --text-color: #333;
    --btn-bg: #007bff;
    --btn-hover: #0056b3;
    --number-bg: #f0f0f0;
    --input-bg: #ffffff;
    --input-border: #ccc;
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --container-bg: #2d2d2d;
    --text-color: #f0f0f0;
    --btn-bg: #375a7f;
    --btn-hover: #2b4764;
    --number-bg: #444;
    --input-bg: #3d3d3d;
    --input-border: #555;
}

body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    text-align: center;
    padding: 2rem;
    background-color: var(--container-bg);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: background-color 0.3s;
    width: 90%;
    max-width: 500px;
}

#generate-btn {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    color: white;
    background-color: var(--btn-bg);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#generate-btn:hover {
    background-color: var(--btn-hover);
}

#lotto-numbers-container {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.theme-toggle-container {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

#theme-toggle {
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 20px;
    border: 1px solid var(--text-color);
    background: transparent;
    color: var(--text-color);
}

.divider {
    margin: 2rem 0;
    border: 0;
    border-top: 1px solid var(--input-border);
}

.contact-section {
    text-align: left;
}

.contact-section h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--input-border);
    border-radius: 5px;
    background-color: var(--input-bg);
    color: var(--text-color);
    box-sizing: border-box;
}

#submit-btn {
    width: 100%;
    padding: 0.8rem;
    background-color: var(--btn-bg);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

#submit-btn:hover {
    background-color: var(--btn-hover);
}

.comments-section {
    margin-top: 2rem;
    text-align: left;
}

.comments-section h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}