:root {
    --bg-color: #f0f2f5;
    --main-color: #333;
    --accent-color: #4CAF50;
    --white: #fff;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --main-color: #f0f2f5;
    --accent-color: #4CAF50;
    --white: #2a2a2a;
    --shadow-color: rgba(0, 0, 0, 0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--main-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-image: linear-gradient(45deg, rgba(255, 255, 255, 0.02) 25%, transparent 25%),
                      linear-gradient(-45deg, rgba(255, 255, 255, 0.02) 25%, transparent 25%),
                      linear-gradient(45deg, transparent 75%, rgba(255, 255, 255, 0.02) 75%),
                      linear-gradient(-45deg, transparent 75%, rgba(255, 255, 255, 0.02) 75%);
    background-size: 20px 20px;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    position: relative; /* Needed for absolute positioning of child */
    text-align: center;
    background-color: var(--white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 25px var(--shadow-color), 0 5px 10px rgba(0,0,0,0.05);
    max-width: 500px;
    width: 90%;
    transition: background-color 0.3s, box-shadow 0.3s;
}

.top-right-nav {
    position: absolute;
    top: 20px;
    right: 20px;
}

.nav-button {
    text-decoration: none;
    padding: 8px 15px;
    background-color: var(--main-color);
    color: var(--bg-color);
    border-radius: 6px;
    font-size: 0.9rem;
    transition: background-color 0.3s, color 0.3s;
}

.nav-button:hover {
    background-color: var(--accent-color);
    color: var(--white);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}
#theme-toggle-btn {
    background-color: var(--main-color);
    color: var(--bg-color);
    border: 1px solid var(--accent-color);
    padding: 10px 20px;
    font-size: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
    margin-bottom: 20px;
}
#theme-toggle-btn:hover {
    background-color: var(--accent-color);
    color: var(--white);
}

#recommend-menu-btn {
    background-color: var(--accent-color);
    color: var(--white);
    border: none;
    padding: 15px 30px;
    font-size: 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.4);
}

#recommend-menu-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.5);
}

#menu-recommendation-container {
    margin-top: 30px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--main-color);
}

.recommended-menu-text {
    padding: 10px 20px;
    border-radius: 8px;
    background-color: var(--bg-color);
    display: inline-block;
    box-shadow: 0 2px 5px var(--shadow-color);
    transition: background-color 0.3s, color 0.3s;
}


h2 {
    font-size: 2rem;
    margin-top: 40px;
    margin-bottom: 20px;
    color: var(--main-color);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    padding: 12px;
    border: 1px solid var(--shadow-color);
    border-radius: 8px;
    font-size: 1rem;
    background-color: var(--white);
    color: var(--main-color);
    transition: border-color 0.3s, background-color 0.3s;
}

.contact-form input[type="text"]:focus,
.contact-form input[type="email"]:focus,
.contact-form textarea:focus {
    border-color: var(--accent-color);
    outline: none;
}

.contact-form textarea {
    resize: vertical;
}

.contact-form button[type="submit"] {
    background-color: var(--accent-color);
    color: var(--white);
    border: none;
    padding: 15px 30px;
    font-size: 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.3s;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.4);
}

.contact-form button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.5);
}

.divider {
    margin: 40px 0;
    border: none;
    border-top: 1px solid var(--shadow-color);
}

/* Disqus container styling */
#disqus_thread {
    margin-top: 20px;
}