:root {
    --primary-color-dark: #4a00e0;
    --secondary-color-dark: #8e2de2;
    --text-color-dark: #ffffff;
    --bg-color-dark: #1a1a2e;
    --container-bg-dark: #1e1e3f;

    --primary-color-light: #f0f0f0;
    --secondary-color-light: #dcdcdc;
    --text-color-light: #333333;
    --bg-color-light: #ffffff;
    --container-bg-light: #f9f9f9;

    --button-bg: linear-gradient(45deg, var(--primary-color-dark), var(--secondary-color-dark));
    --button-hover-bg: linear-gradient(45deg, var(--secondary-color-dark), var(--primary-color-dark));
}

body {
    font-family: 'Arial', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: var(--bg-color-dark);
    color: var(--text-color-dark);
    margin: 0;
    background-image: linear-gradient(to right top, #051937, #004d7a, #008793, #00bf72, #a8eb12);
    transition: background-color 0.3s, color 0.3s;
}

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

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

.theme-switch-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 50px;
    background: var(--button-bg);
    color: var(--text-color-dark);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

body.light-mode .theme-switch-btn {
    background: var(--primary-color-light);
    color: var(--text-color-light);
    border: 1px solid var(--text-color-light);
}

.lotto-machine {
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--primary-color-dark);
    transition: background-color 0.3s, border-color 0.3s;
}

body.light-mode .lotto-machine {
    background-color: var(--container-bg-light);
    border: 1px solid var(--secondary-color-light);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

h1 {
    margin-bottom: 30px;
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: transparent;
    background: var(--button-bg);
    -webkit-background-clip: text;
    background-clip: text;
}

body.light-mode h1 {
    color: var(--text-color-light);
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
}

.numbers-display {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--text-color-dark);
    background: var(--button-bg);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    animation: pop-in 0.5s ease-out forwards;
    transition: background-color 0.3s, color 0.3s;
}

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

.generate-btn {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    background: var(--button-bg);
    color: var(--text-color-dark);
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    text-transform: uppercase;
}

.generate-btn:hover {
    background: var(--button-hover-bg);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

body.light-mode .generate-btn {
    background: var(--primary-color-light);
    color: var(--text-color-light);
    border: 1px solid var(--text-color-light);
}

body.light-mode .generate-btn:hover {
    background: var(--secondary-color-light);
}

@keyframes pop-in {
    from {
        transform: scale(0);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.contact-form-container {
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--primary-color-dark);
    margin-top: 40px;
    width: 80%;
    max-width: 500px;
    transition: background-color 0.3s, border-color 0.3s;
}

body.light-mode .contact-form-container {
    background-color: var(--container-bg-light);
    border: 1px solid var(--secondary-color-light);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-form-container h2 {
    margin-bottom: 20px;
    font-size: 2rem;
    color: var(--text-color-dark);
    transition: color 0.3s;
}

body.light-mode .contact-form-container h2 {
    color: var(--text-color-light);
}

.contact-form input,
.contact-form textarea {
    width: calc(100% - 20px);
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid var(--primary-color-dark);
    border-radius: 8px;
    background-color: var(--bg-color-dark);
    color: var(--text-color-dark);
    font-size: 1rem;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

body.light-mode .contact-form input,
body.light-mode .contact-form textarea {
    border: 1px solid var(--secondary-color-light);
    background-color: var(--bg-color-light);
    color: var(--text-color-light);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-color-dark);
    opacity: 0.7;
    transition: color 0.3s;
}

body.light-mode .contact-form input::placeholder,
body.light-mode .contact-form textarea::placeholder {
    color: var(--text-color-light);
}

.contact-form button {
    padding: 12px 25px;
    border: none;
    border-radius: 50px;
    background: var(--button-bg);
    color: var(--text-color-dark);
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.contact-form button:hover {
    background: var(--button-hover-bg);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

body.light-mode .contact-form button {
    background: var(--primary-color-light);
    color: var(--text-color-light);
    border: 1px solid var(--text-color-light);
}

body.light-mode .contact-form button:hover {
    background: var(--secondary-color-light);
}