:root {
    --bg-color: #f0f2f5;
    --container-bg: #ffffff;
    --text-color: #333;
    --number-bg: #4a90e2;
    --btn-bg: #50e3c2;
    --btn-hover: #48d1b3;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --border-color: #ddd;
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --container-bg: #2d2d2d;
    --text-color: #f0f2f5;
    --number-bg: #61dafb;
    --btn-bg: #bb86fc;
    --btn-hover: #9b65de;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --border-color: #444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    padding: 20px 0;
}

.theme-switch-wrapper {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
}

#theme-toggle {
    background: none;
    border: 2px solid var(--text-color);
    color: var(--text-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

#theme-toggle:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

.container {
    text-align: center;
    padding: 40px;
    border-radius: 12px;
    background-color: var(--container-bg);
    box-shadow: 0 10px 30px var(--shadow-color);
    transition: transform 0.3s ease, background-color 0.3s;
    width: 90%;
    max-width: 500px;
}

.container:hover {
    transform: translateY(-5px);
}

h1 {
    margin-bottom: 30px;
    color: var(--text-color);
    font-size: 2.5rem;
}

.result-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-bottom: 40px;
    min-height: 80px;
}

.menu-item {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 15px 40px;
    border-radius: 50px;
    background-color: var(--number-bg);
    color: #ffffff;
    font-size: 2rem;
    font-weight: bold;
    box-shadow: 0 4px 10px var(--shadow-color);
    transition: transform 0.3s ease, background-color 0.3s ease;
    animation: pop-in 0.5s ease forwards;
    white-space: nowrap;
    margin-bottom: 20px;
}

.menu-image {
    max-width: 100%;
    max-height: 400px;
    width: auto;
    border-radius: 12px;
    box-shadow: 0 4px 10px var(--shadow-color);
    animation: pop-in 0.5s ease forwards;
    object-fit: cover;
}

@keyframes pop-in {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

#generate-btn {
    padding: 15px 30px;
    border: none;
    border-radius: 8px;
    background-color: var(--btn-bg);
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 10px var(--shadow-color);
    width: 100%;
}

#generate-btn:hover {
    background-color: var(--btn-hover);
    transform: translateY(-2px);
}

#generate-btn:active {
    transform: translateY(0);
}

/* Contact Section */
.contact-section {
    margin-top: 40px;
    text-align: left;
}

.contact-section hr {
    border: 0;
    border-top: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.contact-section h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
}

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

.contact-section input, 
.contact-section textarea {
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--container-bg);
    color: var(--text-color);
    font-family: inherit;
}

.contact-section textarea {
    height: 100px;
    resize: none;
}

#submit-btn {
    padding: 12px;
    border: none;
    border-radius: 8px;
    background-color: var(--number-bg);
    color: #ffffff;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.3s;
}

#submit-btn:hover {
    opacity: 0.8;
}

/* Language Link */
.lang-link {
    margin-right: 15px;
    text-decoration: none;
    color: var(--text-color);
    font-weight: bold;
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s ease;
}

.lang-link:hover {
    border-color: var(--text-color);
}

/* Footer */
.site-footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.footer-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    opacity: 0.7;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-copyright {
    font-size: 0.8rem;
    opacity: 0.5;
}

/* Site Description */
.site-description {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1rem;
    opacity: 0.8;
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 600px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 2rem;
    }

    .menu-item {
        font-size: 1.5rem;
        padding: 10px 30px;
    }

    #generate-btn {
        font-size: 1rem;
        padding: 12px 24px;
    }

    .theme-switch-wrapper {
        position: static;
        justify-content: center;
        margin-bottom: 20px;
        flex-wrap: wrap;
        gap: 10px;
    }

    .footer-links {
        flex-direction: column;
        gap: 10px;
    }
}