:root {
    --bg-gradient-start: #ff8a00;
    --bg-gradient-end: #e52e71;
    --container-bg: rgba(255, 255, 255, 0.9);
    --text-color: #333;
    --h1-color: #d35400;
    --btn-bg: #e67e22;
    --btn-hover-bg: #d35400;
    --btn-shadow: rgba(230, 126, 34, 0.4);
    --btn-hover-shadow: rgba(211, 84, 0, 0.5);
    --nav-bg: rgba(255, 255, 255, 0.85);
    --footer-bg: rgba(255, 255, 255, 0.8);
}

body {
    font-family: 'Helvetica Neue', sans-serif;
    background-color: #f0f2f5;
    color: var(--text-color);
    margin: 0;
    background-image: linear-gradient(to right top, var(--bg-gradient-start), #ff7b3e, #ff6d5b, #ff6376, #ff5f8f, #ff63a6, #f76ebd, #e97ad1, #d686e2, #b895ed, #9aa2f4, #7cacfa, #5ffbf1);
    background-attachment: fixed;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.dark-mode {
    --bg-gradient-start: #434343;
    --bg-gradient-end: #000000;
    --container-bg: rgba(50, 50, 50, 0.85);
    --text-color: #ecf0f1;
    --h1-color: #e67e22;
    --nav-bg: rgba(30, 30, 30, 0.85);
    --footer-bg: rgba(30, 30, 30, 0.8);
    background-image: linear-gradient(to right top, var(--bg-gradient-start), var(--bg-gradient-end));
}

header {
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--h1-color);
    text-decoration: none;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--h1-color);
}

#theme-toggle-btn {
    padding: 0.5rem 1rem;
    font-size: 1rem;
    color: white;
    background-color: var(--btn-bg);
    border: none;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

footer {
    background-color: var(--footer-bg);
    backdrop-filter: blur(10px);
    text-align: center;
    padding: 1.5rem;
    margin-top: 2rem;
    color: var(--text-color);
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--container-bg);
    border-radius: 25px;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 3rem;
    color: var(--h1-color);
}

.blog-posts h2, .page-title h1, .post-header h1 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--h1-color);
    margin-bottom: 2rem;
}

.post-card {
    background: var(--container-bg);
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
    overflow: hidden;
}

.post-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 15px 15px 0 0;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

@media (max-width: 768px) {
    .post-card img {
        height: 200px;
    }
}

.post-card h3 {
    padding: 1rem 1.5rem 0.5rem;
    margin: 0;
}

.post-card h3 a {
    text-decoration: none;
    color: var(--h1-color);
    font-size: 1.5rem;
}

.post-card p {
    padding: 0 1.5rem;
    line-height: 1.6;
}

.post-card .read-more {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    margin: 1rem 1.5rem 1.5rem;
    background: var(--btn-bg);
    color: white;
    text-decoration: none;
    border-radius: 20px;
    transition: background-color 0.3s;
}

.post-card .read-more:hover {
    background-color: var(--btn-hover-bg);
}

.dinner-recommender {
    margin-top: 3rem;
}

.container {
    background-color: var(--container-bg);
    padding: 2.5rem;
    border-radius: 25px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    text-align: center;
    backdrop-filter: blur(12px);
    width: 90%;
    max-width: 450px;
    margin: 0 auto;
}

h1 {
    margin-bottom: 2rem;
    font-size: 2.8rem;
    color: var(--h1-color);
    font-weight: 700;
}

.menu-display {
    margin: 2rem 0;
    min-height: 380px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

#menu-image-container {
    width: 100%;
    height: 300px;
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

#menu-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#menu-name {
    font-size: 2.8rem;
    font-weight: bold;
    color: var(--h1-color);
}

#generate-btn {
    padding: 1rem 2.5rem;
    font-size: 1.4rem;
    font-weight: 600;
    color: white;
    background-color: var(--btn-bg);
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--btn-shadow);
}

#generate-btn:hover {
    background-color: var(--btn-hover-bg);
    box-shadow: 0 6px 20px var(--btn-hover-shadow);
    transform: translateY(-3px);
}

.page-content {
    background: var(--container-bg);
    padding: 2rem;
    border-radius: 15px;
    line-height: 1.8;
}

.post-page article {
    background: var(--container-bg);
    padding: 2rem;
    border-radius: 15px;
}

.post-header {
    text-align: center;
    margin-bottom: 2rem;
}

.post-meta {
    color: #888;
}

.post-image {
    width: 100%;
    max-width: 800px;
    height: auto;
    border-radius: 15px;
    margin: 0 auto 2rem;
    display: block;
}

.post-content {
    line-height: 1.8;
}

.post-content h2 {
    color: var(--h1-color);
    margin-top: 2rem;
}

.form-container {
    background-color: var(--container-bg);
    padding: 2.5rem;
    border-radius: 25px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    text-align: center;
    backdrop-filter: blur(12px);
    max-width: 600px;
    margin: 0 auto;
}

.form-container h2 {
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: var(--h1-color);
    font-weight: 700;
}

.form-container form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-container label {
    text-align: left;
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 0.2rem;
}

.form-container input[type="text"],
.form-container input[type="email"],
.form-container textarea {
    padding: 0.8rem 1rem;
    border: 1px solid #ccc;
    border-radius: 10px;
    font-size: 1rem;
    color: var(--text-color);
    background-color: rgba(255, 255, 255, 0.7);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-container input[type="text"]:focus,
.form-container input[type="email"]:focus,
.form-container textarea:focus {
    border-color: var(--btn-bg);
    box-shadow: 0 0 8px rgba(230, 126, 34, 0.3);
    outline: none;
}

.form-container textarea {
    resize: vertical;
    min-height: 100px;
}

.form-container button[type="submit"] {
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    color: white;
    background-color: var(--btn-bg);
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--btn-shadow);
    margin-top: 1rem;
}

.form-container button[type="submit"]:hover {
    background-color: var(--btn-hover-bg);
    box-shadow: 0 6px 20px var(--btn-hover-shadow);
    transform: translateY(-3px);
}

@media (max-width: 768px) {
    nav ul {
        display: none; /* Hide for smaller screens, could be replaced with a hamburger menu */
    }

    main {
        padding: 0 1rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }
}