:root {
    --background-color-light: #f0f0f0;
    --primary-color-light: #ffffff;
    --secondary-color-light: #e0e0e0;
    --accent-color-light: #007bff;
    --text-color-light: #000000;
    --shadow-color-light: rgba(0, 0, 0, 0.1);

    --background-color-dark: #121212;
    --primary-color-dark: #1e1e1e;
    --secondary-color-dark: #2e2e2e;
    --accent-color-dark: #bb86fc;
    --text-color-dark: #ffffff;
    --shadow-color-dark: rgba(0, 0, 0, 0.5);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 2rem 0;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.light-mode {
    background-color: var(--background-color-light);
    color: var(--text-color-light);
    background-image: none;
}

body.dark-mode {
    background-color: var(--background-color-dark);
    color: var(--text-color-dark);
    background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.1) 1px, transparent 0);
    background-size: 20px 20px;
}

.container {
    border-radius: 15px;
    padding: 2rem;
    width: 100%;
    max-width: 500px;
    text-align: center;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    margin: 0 auto 2rem auto;
}

body.light-mode .container {
    background-color: var(--primary-color-light);
    box-shadow: 0 10px 30px var(--shadow-color-light);
}

body.dark-mode .container {
    background-color: var(--primary-color-dark);
    box-shadow: 0 10px 30px var(--shadow-color-dark);
}

h1 {
    margin-bottom: 2rem;
    font-size: 2.5rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: color 0.3s ease;
}

body.light-mode h1 {
    color: var(--accent-color-light);
}

body.dark-mode h1 {
    color: var(--accent-color-dark);
}

.lotto-display {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

lotto-ball {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease, color 0.3s ease;
    animation: appear 0.5s ease-out forwards;
}

body.light-mode lotto-ball {
    color: var(--text-color-dark);
    box-shadow: 0 4px 15px var(--shadow-color-light);
}

body.dark-mode lotto-ball {
    color: var(--text-color-dark);
    box-shadow: 0 4px 15px var(--shadow-color-dark);
}

@keyframes appear {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

#generate-btn, #contact-btn {
    border: none;
    border-radius: 8px;
    padding: 1rem 2rem;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease, color 0.3s ease;
    margin-top: 1rem;
}

body.light-mode #generate-btn, body.light-mode #contact-btn {
    background-color: var(--accent-color-light);
    color: var(--primary-color-light);
    box-shadow: 0 4px 10px rgba(0, 123, 255, 0.3);
}

body.dark-mode #generate-btn, body.dark-mode #contact-btn {
    background-color: var(--accent-color-dark);
    color: var(--primary-color-dark);
    box-shadow: 0 4px 10px rgba(187, 134, 252, 0.3);
}

#generate-btn:hover, #contact-btn:hover {
    transform: translateY(-2px);
}

body.light-mode #generate-btn:hover, body.light-mode #contact-btn:hover {
    background-color: #0056b3;
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

body.dark-mode #generate-btn:hover, body.dark-mode #contact-btn:hover {
    background-color: #a764fd;
    box-shadow: 0 6px 20px rgba(187, 134, 252, 0.4);
}

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

.history {
    margin-top: 2rem;
    border-radius: 10px;
    padding: 1.5rem;
    transition: background-color 0.3s ease;
}

body.light-mode .history {
    background-color: var(--secondary-color-light);
}

body.dark-mode .history {
    background-color: var(--secondary-color-dark);
}

h2 {
    margin-top: 0;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

body.light-mode h2 {
    color: var(--accent-color-light);
}

body.dark-mode h2 {
    color: var(--accent-color-dark);
}

#history-list {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 200px;
    overflow-y: auto;
}

#history-list li {
    margin-bottom: 0.5rem;
    padding: 0.75rem;
    border-radius: 5px;
    font-size: 1.1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

body.light-mode #history-list li {
    background-color: var(--primary-color-light);
}

body.dark-mode #history-list li {
    background-color: var(--primary-color-dark);
}

/* Custom Scrollbar */
#history-list::-webkit-scrollbar {
    width: 8px;
}

#history-list::-webkit-scrollbar-track {
    background: var(--secondary-color);
}

#history-list::-webkit-scrollbar-thumb {
    background-color: var(--accent-color);
    border-radius: 4px;
}

/* Theme Switcher */
.theme-switcher {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

#theme-toggle {
    display: none;
}

#theme-toggle + label {
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.3s ease;
}

#theme-toggle + label:before {
    content: '\1F319'; /* Crescent moon icon */
}

#theme-toggle:checked + label:before {
    content: '\2600'; /* Sun icon */
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
}

.modal-content {
    background-color: #fefefe;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 500px;
    border-radius: 10px;
    position: relative;
}

.close-btn {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close-btn:hover,
.close-btn:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.modal-content h2 {
    margin-top: 0;
}

.modal-content label {
    display: block;
    margin-bottom: 0.5rem;
    text-align: left;
}

.modal-content input,
.modal-content textarea {
    width: 100%;
    padding: 0.5rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    border: 1px solid #ccc;
}

.modal-content button {
    width: 100%;
    padding: 1rem;
    border-radius: 5px;
}

/* Dark mode modal */
body.dark-mode .modal-content {
    background-color: var(--secondary-color-dark);
    border-color: var(--primary-color-dark);
}

body.dark-mode .modal-content h2,
body.dark-mode .modal-content label {
    color: var(--text-color-dark);
}

body.dark-mode .modal-content input,
body.dark-mode .modal-content textarea {
    background-color: var(--primary-color-dark);
    border-color: var(--secondary-color-dark);
    color: var(--text-color-dark);
}

body.dark-mode .close-btn {
    color: #aaa;
}

body.dark-mode .close-btn:hover,
body.dark-mode .close-btn:focus {
    color: white;
}

/* Disqus Comments Section */
#disqus_thread {
    max-width: 700px;
    margin: 2rem auto;
    padding: 0 1rem;
}