:root {
    --background-color: #f0f0f0;
    --card-background-color: #ffffff;
    --primary-color: #4a90e2;
    --primary-color-dark: #357ABD;
    --text-color: #333333;
    --number-color: #ffffff;
    --ball-size: 50px;
}

body.dark-mode {
    --background-color: #1a1a1a;
    --card-background-color: #2c2c2c;
    --text-color: #f0f0f0;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    background-image: url("data:image/svg+xml,%3Csvg width='6' height='6' viewBox='0 0 6 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%239C92AC' fill-opacity='0.1'%3E%3Cpath d='M5 0h1L0 6V5zM6 5v1H5z'/%3E%3C/g%3E%3C/svg%3E");
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    transition: background-color 0.3s ease;
}

.container {
    background-color: var(--card-background-color);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 90%;
    max-width: 400px;
    transition: background-color 0.3s ease;
}

h1 {
    color: var(--text-color);
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.theme-switch-container {
    position: absolute;
    top: 20px;
    right: 20px;
}

.theme-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.numbers-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
    min-height: 60px;
}

.number-ball {
    width: var(--ball-size);
    height: var(--ball-size);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--number-color);
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, background-color 0.3s ease;
}

#generate-button {
    background-color: var(--primary-color);
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    padding: 15px 30px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
}

#generate-button:hover {
    background-color: var(--primary-color-dark);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.5);
}

#generate-button:active {
    transform: scale(0.98);
}

/* Contact Section Styles */
.contact-section {
    background-color: var(--card-background-color);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 90%;
    max-width: 500px;
    margin-top: 40px; /* Add some space above the contact form */
    transition: background-color 0.3s ease;
}

.contact-section h2 {
    color: var(--text-color);
    font-size: 2rem;
    margin-bottom: 25px;
}

.contact-section form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

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

.contact-section label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: bold;
}

.contact-section input[type="text"],
.contact-section input[type="email"],
.contact-section textarea {
    width: calc(100% - 20px);
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1rem;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: border-color 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.contact-section input[type="text"]:focus,
.contact-section input[type="email"]:focus,
.contact-section textarea:focus {
    border-color: var(--primary-color);
    outline: none;
}

.contact-section button[type="submit"] {
    background-color: var(--primary-color);
    color: white;
    font-size: 1.1rem;
    font-weight: bold;
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
    margin-top: 20px;
}

.contact-section button[type="submit"]:hover {
    background-color: var(--primary-color-dark);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.5);
}

.contact-section button[type="submit"]:active {
    transform: scale(0.98);
}