:root {
    /* Dark Theme Colors */
    --primary-color: #5b86e5; /* A vibrant blue for primary actions */
    --secondary-color: #a77dff; /* A complementary purple for accents */
    --text-color: #e0e0e0;
    --background-color: #1a1a2e; /* Deep indigo background */
    --container-bg-color: #16213e; /* Slightly lighter indigo for containers */
    --shadow-color: rgba(0, 0, 0, 0.4);
    --input-bg-color: #1a2a4a;
    --input-border-color: #3f5d8f;
    --input-focus-border-color: var(--primary-color);


    /* Light Theme Colors */
    --primary-color-light: #4CAF50;
    --secondary-color-light: #FFC107;
    --text-color-light: #333;
    --background-color-light: #f0f2f5; /* Light grey background */
    --container-bg-color-light: #ffffff; /* White for containers */
    --shadow-color-light: rgba(0, 0, 0, 0.1);
    --input-bg-color-light: #f8f8f8;
    --input-border-color-light: #ccc;
    --input-focus-border-color-light: var(--primary-color-light);
}

/* Base styles for dark theme */
body {
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--background-color) 0%, #0f0e1c 100%);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    transition: background-color 0.4s ease, color 0.4s ease;
    padding: 20px;
    box-sizing: border-box;
}

/* Light theme overrides */
.light-theme {
    --primary-color: var(--primary-color-light);
    --secondary-color: var(--secondary-color-light);
    --text-color: var(--text-color-light);
    --background-color: var(--background-color-light);
    --container-bg-color: var(--container-bg-color-light);
    --shadow-color: var(--shadow-color-light);
    --input-bg-color: var(--input-bg-color-light);
    --input-border-color: var(--input-border-color-light);
    --input-focus-border-color: var(--input-focus-border-color-light);
    background: linear-gradient(135deg, var(--background-color) 0%, #e0e2e5 100%);
}

.container {
    background-color: var(--container-bg-color);
    padding: 30px 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--shadow-color);
    text-align: center;
    max-width: 90%;
    width: 600px; /* Increased width for new content */
    transition: background-color 0.4s ease, box-shadow 0.4s ease;
}

h1 {
    font-size: 3.2rem; /* Larger for main title */
    margin-bottom: 2.5rem;
    color: var(--text-color);
    text-shadow: 0 0 8px var(--primary-color), 0 0 15px var(--secondary-color);
    transition: color 0.4s ease, text-shadow 0.4s ease;
}

.lotto-generator-section h1, .contact-form-section h2 {
    font-size: 2.5rem; /* Smaller for sub-sections */
    margin-top: 2.5rem;
    margin-bottom: 2rem;
}


.lotto-numbers {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.lotto-number {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    background-color: #2a2a4a; /* A darker shade for numbers in dark mode */
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    font-weight: bold;
    color: #fff;
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 12px rgba(91, 134, 229, 0.6);
    transition: all 0.4s ease;
    animation: fadeIn 0.6s ease-out forwards;
    opacity: 0; /* Start invisible for animation */
}

.light-theme .lotto-number {
    background-color: #e0e0e0; /* Lighter shade for numbers in light mode */
    color: var(--text-color);
    border-color: var(--primary-color-light);
    box-shadow: 0 0 12px rgba(76, 175, 80, 0.4);
}

#generator-btn, #predict-file-btn, .submit-btn { /* Updated selector for buttons */
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: #ffffff;
    border: none;
    padding: 1.1rem 2.5rem;
    font-size: 1.3rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    outline: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    margin-top: 20px;
    margin-bottom: 10px;
}

#generator-btn:hover, #predict-file-btn:hover, .submit-btn:hover { /* Updated selector for buttons */
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    opacity: 0.9;
}

#generator-btn:active, #predict-file-btn:active, .submit-btn:active { /* Updated selector for buttons */
    transform: translateY(0);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.7);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Theme Switch Styles - Refined */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 30px;
    margin-bottom: 20px; /* Added margin-bottom for spacing */
    font-size: 0.95rem;
}

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

.theme-switch input {
    display: none;
}

.slider {
    background-color: #555;
    bottom: 0;
    left: 0;
    right: 0;
    top: 0;
    cursor: pointer;
    position: absolute;
    transition: 0.4s;
    border-radius: 34px;
}

.slider:before {
    background-color: #f1f1f1;
    bottom: 4px;
    content: '';
    height: 26px;
    left: 4px;
    position: absolute;
    transition: 0.4s;
    width: 26px;
    border-radius: 50%;
}

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

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

.theme-switch-wrapper em {
    margin-left: 12px;
    color: var(--text-color);
    transition: color 0.4s ease;
}


/* Contact Form Styles */
.contact-form-section {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.light-theme .contact-form-section {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.contact-form-section h2 {
    font-size: 2rem;
    color: var(--text-color);
    margin-bottom: 25px;
    text-shadow: 0 0 5px var(--primary-color);
}

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

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 1.1rem;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: calc(100% - 20px);
    padding: 12px;
    border: 1px solid var(--input-border-color);
    border-radius: 8px;
    background-color: var(--input-bg-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    border-color: var(--input-focus-border-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.3); /* Assuming primary-color can be converted to rgb */
}

/* Fallback for primary-color-rgb for box-shadow if not defined */
.contact-form input:focus,
.contact-form textarea:focus {
  box-shadow: 0 0 0 3px rgba(91, 134, 229, 0.3);
}

.light-theme .contact-form input:focus,
.light-theme .contact-form textarea:focus {
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.3);
}


.submit-btn {
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: #ffffff;
    border: none;
    padding: 1.1rem 2.5rem;
    font-size: 1.3rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    outline: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    margin-top: 20px;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    opacity: 0.9;
}

.submit-btn:active {
    transform: translateY(0);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}
/* Animal Test Section Styles */
.animal-test-section {
    margin-bottom: 40px;
}

.animal-test-section p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-color);
}

#image-upload {
    margin-bottom: 20px;
    padding: 10px;
    border: 1px solid var(--primary-color);
    border-radius: 8px;
    background-color: var(--input-bg-color);
    color: var(--text-color);
    font-size: 1rem;
    cursor: pointer;
}

#image-upload::file-selector-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    margin-right: 15px;
    transition: background-color 0.3s ease;
}

#image-upload::file-selector-button:hover {
    background-color: var(--secondary-color);
}

#uploaded-image {
    max-width: 100%;
    height: auto;
    max-height: 300px;
    border: 3px solid var(--primary-color);
    border-radius: 10px;
    margin-bottom: 20px;
    object-fit: contain;
}

.result-display {
    margin-top: 20px;
    font-size: 1.6rem;
    font-weight: bold;
    color: var(--text-color);
    min-height: 50px; /* Reserve space for results */
}

#loading-message {
    margin-top: 10px;
    font-style: italic;
    color: var(--secondary-color);
}