:root {
    --background-color: #f0f2f5;
    --container-bg: #ffffff;
    --text-color: #333;
    --accent-color: #4CAF50;
    --accent-color-dark: #45a049;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --glow-color: rgba(76, 175, 80, 0.7);
}

body.dark-mode {
    --background-color: #1a1a1a;
    --container-bg: #2c2c2c;
    --text-color: #f0f2f5;
    --shadow-color: rgba(255, 255, 255, 0.1);
    --accent-color: #66bb6a;
    --accent-color-dark: #81c784;
    --glow-color: rgba(102, 187, 106, 0.7);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-image: radial-gradient(circle, rgba(0,0,0,0.05) 1px, transparent 1px);
    background-size: 20px 20px;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    background-color: var(--container-bg);
    padding: 2rem 3rem;
    border-radius: 15px;
    box-shadow: 0 10px 20px var(--shadow-color), 0 6px 6px var(--shadow-color);
    text-align: center;
    max-width: 500px;
    width: 90%;
    transition: background-color 0.3s, box-shadow 0.3s;
}

header {
    position: relative;
    margin-bottom: 2rem; /* Add some space below the header */
}

header h1 {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.theme-switch-wrapper {
    position: absolute;
    top: 10px;
    right: 10px;
}

.theme-switch {
    display: inline-block;
    height: 34px;
    position: relative;
    width: 60px;
}

.theme-switch input {
    display:none;
}

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

.slider:before {
    background-color: #fff;
    bottom: 4px;
    content: "";
    height: 26px;
    left: 4px;
    position: absolute;
    transition: .4s;
    width: 26px;
}

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

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

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}


.lotto-display {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

#generate-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    margin-top: 1rem; /* Added margin for spacing */
}

#generate-btn:hover, #generate-btn:focus {
    background-color: var(--accent-color-dark);
    box-shadow: 0 0 15px var(--glow-color);
}

lotto-ball {
    --ball-color: #f44336; /* Default color */
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #fff, var(--ball-color));
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    animation: appear 0.5s ease-out forwards;
}

@keyframes appear {
    from {
        transform: scale(0);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Contact Form Styles */
.contact-form-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--shadow-color);
}

.contact-form-section h2 {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.contact-form-section p {
    color: var(--text-color);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: calc(100% - 20px);
    padding: 10px;
    border: 1px solid var(--shadow-color);
    border-radius: 5px;
    background-color: var(--container-bg);
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s, background-color 0.3s;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    border-color: var(--accent-color);
    outline: none;
    box-shadow: 0 0 5px rgba(var(--accent-color-rgb), 0.5); /* Assuming --accent-color-rgb exists or deriving */
}

#submit-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 12px 25px;
    font-size: 1.1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    width: 100%;
    margin-top: 1rem;
}

#submit-btn:hover, #submit-btn:focus {
    background-color: var(--accent-color-dark);
    box-shadow: 0 0 15px var(--glow-color);
}

.form-note {
    font-size: 0.9em;
    color: #888;
    margin-top: 1.5rem;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .container {
        padding: 1.5rem 1rem;
    }

    header h1 {
        font-size: 2rem;
    }

    #generate-btn, #submit-btn {
        padding: 10px 20px;
        font-size: 1rem;
    }
}