html {
    scroll-behavior: smooth;
    /* For smooth scrolling when clicking links */
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    background-color: #f7fafd;
    /* Light blue background */
    color: #333;
    line-height: 1.6;
}

.navbar {
    background-color: #4CAF50;
    /* Green */
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center; /* Ensures main navbar items are vertically centered */
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    position: sticky;
    /* Makes navbar stick to the top */
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    font-size: 1.8em;
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 30px;
    font-size: 1.2em;
    font-weight: 500;
}

.nav-links li {
    /* NEW: Vertically center content within each list item */
    display: flex;
    align-items: center;
    box-sizing: border-box; /* Ensure padding/border is included */
}

.nav-links a {
    /* Style for the "Your Meal Plan" link acting as a button */
    color: white;
    text-decoration: none;
    padding: 8px 15px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 5px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    display: inline-block; /* Ensure padding/border applies correctly */
    box-sizing: border-box; /* Include padding/border in element's total size */
}

.nav-links a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: white;
}

/* Search Box Styles */
.search-container {
    margin: 0 15px; /* Adjust spacing in navbar */
}

#recipeSearchInput {
    padding: 8px 15px;
    border: 1px solid #ccc;
    border-radius: 20px;
    font-size: 1em;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    width: 200px; /* Default width */
    max-width: 100%;
}

#recipeSearchInput::placeholder {
    color: #a0a0a0;
}

#recipeSearchInput:focus {
    border-color: #81c784; /* Lighter green on focus */
    box-shadow: 0 0 0 3px rgba(129, 199, 132, 0.5); /* Green glow */
    background-color: #ffffff; /* White background on focus */
}


.reset-button {
    background-color: #f44336;
    /* Red */
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.reset-button:hover {
    background-color: #d32f2f;
    transform: translateY(-2px);
}

/* --- Container for side-by-side layout --- */
.container {
    display: flex;
    padding: 20px;
    gap: 30px;
    height: calc(100vh - 80px);
    /* Adjust 80px based on your actual navbar height */
}

/* --- Recipe Catalog and Meal Plan Sections (Left & Right Sidebars) --- */
.recipe-catalog,
.meal-plan-section {
    flex: 1;
    /* Both take equal width */
    background-color: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);

    /* --- KEY FOR SEPARATE SCROLLBARS --- */
    max-height: calc(100vh - 130px);
    /* Adjust based on navbar/padding/buffer */
    overflow-y: auto;
    /* Add vertical scrollbar when content overflows */
}

h2 {
    text-align: center;
    color: #4CAF50;
    margin-top: 0;
    margin-bottom: 25px;
    font-size: 2em;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 10px;
}

h3 {
    color: #3f51b5;
    /* Indigo */
    margin-top: 30px;
    margin-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 5px;
    font-size: 1.5em;
}

/* --- Category Filter Buttons --- */
.category-filters {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
    gap: 10px;
}

.filter-button {
    background-color: #e0e0e0;
    border: 1px solid #ccc;
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9em;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.filter-button:hover {
    background-color: #d0d0d0;
}

.filter-button.active {
    background-color: #4CAF50;
    /* Green */
    color: white;
    border-color: #4CAF50;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}


.recipe-list-grid,
.planned-recipes-grid {
    display: grid;
    /* Use CSS Grid for flexible item layout */
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    /* Min width per card */
    gap: 20px;
    padding: 10px;
    border: 1px dashed #e0e0e0;
    border-radius: 8px;
    min-height: 150px;
    /* Ensure some height even if empty */
}

.recipe-card {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.recipe-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

.recipe-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 5px;
    margin: 0 auto 15px auto;
    border: 2px solid #4CAF50;
}

.recipe-card h3 {
    margin-top: 0;
    margin-bottom: 5px;
    color: #333;
    font-size: 1.3em;
    border-bottom: none;
    /* Override general h3 style */
    padding-bottom: 0;
}

.recipe-card p {
    margin: 3px 0;
    font-size: 0.95em;
    color: #555;
}

.recipe-card ul {
    list-style: none;
    padding: 0;
    margin: 10px 0;
    text-align: left;
    font-size: 0.9em;
    color: #666;
}

.recipe-card li {
    margin-bottom: 2px;
}

.recipe-card .total-cost {
    font-weight: bold;
    color: #007bff;
    /* Blue */
    font-size: 1.15em;
    margin-top: 10px;
}

.recipe-card .total-calories {
    font-weight: bold;
    color: #ff9800;
    /* Orange */
    font-size: 1.05em;
    margin-top: 5px;
}

.recipe-card button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.95em;
    margin-top: 15px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.recipe-card button:hover {
    background-color: #0056b3;
    transform: translateY(-1px);
}

.recipe-card button.remove-button {
    background-color: #dc3545;
    /* Red for remove button */
}

.recipe-card button.remove-button:hover {
    background-color: #c82333;
}

.shopping-list-details {
    list-style: disc;
    padding-left: 25px;
    margin-top: 20px;
    font-size: 1.1em;
    color: #444;
}

.shopping-list-details li {
    margin-bottom: 8px;
    padding-bottom: 5px;
    border-bottom: 1px dashed #eee;
}

.shopping-list-details li:last-child {
    border-bottom: none;
}

.placeholder-text {
    text-align: center;
    color: #999;
    font-style: italic;
    padding: 20px;
    grid-column: 1 / -1;
    /* Make it span all columns in grid */
}

/* --- New Download Button Style --- */
.download-button {
    background-color: #2196f3;
    /* Blue */
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    margin-bottom: 20px;
    /* Space it from content below */
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    display: block;
    /* Make it a block element to take full width */
    width: fit-content;
    /* Adjust to content width */
    margin-left: auto;
    /* Center or align right */
    margin-right: auto;
    /* Center */
}

.download-button:hover {
    background-color: #1976d2;
    transform: translateY(-2px);
}


/* --- Responsive adjustments --- */
@media (max-width: 992px) {
    .container {
        flex-direction: column;
        /* Stack sidebars vertically */
        gap: 20px;
        padding: 15px;
        height: auto;
        /* Allow the entire page to scroll on smaller screens */
    }

    .recipe-catalog,
    .meal-plan-section {
        padding: 20px;
        /* --- Remove fixed height and separate scrollbar for mobile --- */
        max-height: none;
        overflow-y: visible;
    }

    .navbar {
        flex-direction: column;
        /* Stack nav items vertically on smaller screens */
        align-items: flex-start;
        padding: 10px 15px;
    }

    .nav-links {
        margin-top: 10px;
        gap: 15px; /* Slightly reduced gap */
        font-size: 1.1em;
        width: 100%;
        /* Ensure links take full width for better tapping */
        justify-content: space-around;
        /* Distribute links evenly */
    }

    .nav-links li {
        flex-basis: 0;
        /* Allow flex items to shrink/grow */
        flex-grow: 1;
        text-align: center;
        box-sizing: border-box; /* Ensure padding/border is included */
        min-width: fit-content; /* Allow content to dictate min-width */
        white-space: nowrap; /* Prevent text wrapping inside li to keep button intact */
    }
    
    .nav-links a {
        padding: 8px 12px; /* Slightly reduced padding for buttons/links */
    }


    /* Adjust search input for smaller screens */
    .search-container {
        width: 100%;
        margin: 10px 0;
        text-align: center;
    }

    #recipeSearchInput {
        width: 80%; /* Make search input wider on smaller screens */
        max-width: 300px; /* Limit max width */
    }


    .reset-button {
        margin-top: 10px;
        align-self: center; /* Center the reset button horizontally */
    }

    .recipe-list-grid,
    .planned-recipes-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        /* Slightly smaller cards */
        gap: 15px;
    }

    .category-filters {
        flex-wrap: wrap;
        /* Allow buttons to wrap on smaller screens */
        justify-content: center;
    }

    .download-button {
        width: 100%;
        /* Full width on mobile */
    }
}

@media (max-width: 600px) {
    .navbar-brand {
        font-size: 1.5em;
    }

    .nav-links {
        font-size: 0.95em; /* Slightly smaller font for more space */
        gap: 10px; /* Further reduced gap */
        flex-wrap: wrap; /* Allow nav links to wrap if needed */
        justify-content: center; /* Center items if they wrap */
    }

    .nav-links li {
        white-space: nowrap; /* Keep text on one line */
        margin-bottom: 5px; /* Add some space between wrapped items */
    }
    
    .nav-links a {
        padding: 6px 10px; /* Even smaller padding for very small screens */
    }

    h2,
    h3 {
        font-size: 1.6em;
    }

    #recipeSearchInput {
        width: 90%; /* Even wider on very small screens */
    }

    .recipe-list-grid,
    .planned-recipes-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        /* Even smaller cards */
        gap: 10px;
    }

    .recipe-card {
        padding: 10px;
    }

    .recipe-card img {
        height: 120px;
    }

    .recipe-card h3 {
        font-size: 1.1em;
    }

    .recipe-card p,
    .recipe-card .total-cost,
    .recipe-card .total-calories {
        font-size: 0.9em;
    }
}

@media (max-width: 400px) {

    .nav-links {
        font-size: 0.9em; /* Smallest font size */
        gap: 8px; /* Smallest gap */
    }

    .recipe-list-grid,
    .planned-recipes-grid {
        grid-template-columns: 1fr;
        /* Single column on very small screens */
    }

    .recipe-card button {
        font-size: 0.85em;
        padding: 6px 10px;
    }

    .shopping-list-details {
        font-size: 0.95em;
        padding-left: 20px;
    }
}