/* BASE STYLES */
body {
    background-color: #000;
    color: #fff;
    font-family: Helvetica, Arial, sans-serif;
    font-size: 16px;
    margin: 0;
    padding: 0;
    display: flex;
    min-height: 100vh;
    box-sizing: border-box;
}

h1, h2 {
    margin-top: 0;
    margin-bottom: 0;
}

.main-container {
    width: 75%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-grow: 1;
    padding-bottom: 50px;
    align-items: flex-start;
}

/* (STICKY NAV) */
.left-column {
    flex-basis: 33.33%;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: sticky;
    top: 0;
    height: 90vh;
    padding-right: 20px;
    box-sizing: border-box;
}

.left-content {
    width: 75%;
    margin-top: 14vh;
}

.left-content h1, .left-content h2 {
    margin: 0;
}

.description-text {
    color: #ddd;
    font-size: 16px;
    font-weight: normal;
    line-height: 1.5;
    margin-top: 16px;
    margin-bottom: 16px;
}

/* LEFT NAV LINKS */
.left-content nav a {
    color: #fff;
    text-decoration: none;
    display: block;
    margin: 10px 0;
    padding: 5px 0px;
    transition: color 0.3s;
}

.left-content nav a:hover {
    color: #b3ff00;
}

.left-content nav a.active {
    color: #b3ff00;
    font-weight: bold;
}

.right-column-wrapper {
    flex-basis: 66.66%;
    flex-grow: 1;
    margin-top: 16.5vh; /* forgot original */
    padding-left: 20px; 
    box-sizing: border-box;
    position: relative;
}

.right-column-wrapper h2 {
    margin: 0 0 8px 0;
}

/* DEFAULT SPLASH IMAGE STYLES */
.home-image-container {
    width: 100%;
    line-height: 0; /* Prevents extra space below the image */
}

.home-image-container img {
    display: block;
    width: 100%;
    margin-top: .5vh; /* forgot original */
    height: auto;
    object-fit: cover;
}

/* spacing T, L, B, R */
.content-section {
    padding: 32px 0;
}

/* content loaded into the right column */
.content-section p, 
.right-column-wrapper p {
    color: #ddd;
    line-height: 1.5;
    margin-bottom: 16px;
    /* KEY FOR SPACING */
    /* white-space: pre-wrap; */
}

/* spacing T, L, B, R */
.timeline {
    position: relative;
    padding: 2px 0 0px 30px;
}

/* leftside line */
.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #444;
}

.timeline-item-link {
    position: relative;
    display: block;
    margin-bottom: 30px;
    padding: 0 0 0 20px;
    text-decoration: none;
    color: #fff;
    transition: color 0.3s ease;
}

.timeline-item-link:hover {
    color: #b3ff00;
    cursor: pointer;
}

.timeline-item-link::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 5px;
    width: 8px;
    height: 8px;
    background: #b3ff00;
    border-radius: 50%;
    z-index: 1;
}

.timeline-date {
    color: #ccc;
}

/* POPUP GALLERY STYLES */
#columnPopup {
    position: fixed; 
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999; 
    cursor: pointer;
}

#columnPopup img,
#columnPopup video { 
    max-width: 90%; 
    max-height: 90%;
    box-shadow: 0 0 20px rgba(0,0,0,0.8);
    object-fit: contain;
    opacity: 1; 
    transition: opacity 0.3s ease;
    cursor: default; 
}

.gallery-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #fff;
    font-size: 2em;
    cursor: pointer;
    padding: 20px;
    user-select: none;
    z-index: 10000;
}

#prevBtn { 
    left: 30px; 
}

#nextBtn { 
    right: 30px; 
}

.gallery-btn:hover {
    color: #b3ff00;
}

/* --- 1. Corrected Grid Container (using CSS Grid) --- */
.grid-container {
    /* Layout: CSS Grid is the proper tool for a strict 9x9 layout */
    display: grid;
    /* This creates exactly 9 columns, each taking up an equal fraction (1fr) of the space */
    grid-template-columns: repeat(3, 1fr); 
    
    /* Spacing: Creates a consistent gap between grid items */
    gap: 5px; 

    /* Alignment & Sizing */
    margin: 0 0 0 auto; /* Aligns the entire container to the right */
    width: 90vw;
    max-width: 800px; 
}

/* --- 2. Image Styling --- */
.grid-container img {
    /* In CSS Grid, the image width is handled automatically by the '1fr' columns. 
       We only need to ensure the image fills its grid cell and has square dimensions. */
    width: 100%; 
    /* Important: This ensures the image fills the 1fr height */
    /* height: 100%; */ 
    /* Optional: Forces cells to be square for a classic grid look */
    /* aspect-ratio: 1 / 1; */ 
    
    cursor: pointer;
    display: block;
    object-fit: cover; /* Ensures the image covers the area of the cell */
}

/* --- 3. Lightbox Styling (Improvements) --- */
.lightbox {
    /* Use 'fixed' to cover the whole viewport, regardless of scrolling */
    position: fixed; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%; 
    
    /* Display: Use flex to center the content */
    display: none; 
    justify-content: center; 
    align-items: center; 
    
    z-index: 1000;
    background-color: rgba(0, 0, 0, 0.9);
}

.lightbox-content {
    display: block;
    max-width: 50%; 
    /* Ensures the image respects the height of the viewport */
    max-height: 90vh; 
    object-fit: contain; /* Prevents the image from being cropped */
}

@media screen and (max-width: 768px) {

    /* 1. Stack the Main Container */
    .main-container {
        width: 90%;
        flex-direction: column; /* Stacks Left Column on top of Right Column */
        padding-bottom: 12px;
    }

    /* 2. Reset Left Column (Header area) */
    .left-column {
        flex-basis: auto;
        width: 100%;
        height: auto;
        position: relative; /* Removes sticky behavior */
        padding-right: 0;
        margin-bottom: 8px; /* Small space before content starts */
    }

    .left-content {
        width: 100%;
        margin-top: 40px;
    }
    
    .grid-container {
        /* Change to a single column */
        grid-template-columns: 1fr; 
        gap: 5px; 
        margin: 0;
    }
    
    /* Optional: If you want to center the container when it's narrow */
    .grid-container {
        max-width: 99%; /* Give it 5% margin space on small screens */
    }
    
    /* --- HORIZONTAL NAV (Plain Text) --- */
    .left-content nav {
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 6px; /* Space between links */
        margin-top: 12px;
    }

    .left-content nav a {
        display: inline-block;
        margin: 0; /* Removes vertical spacing */
        padding: 5px 0;
    }
    /* ----------------------------------- */

    /* 3. Reset Right Column (Content) */
    .right-column-wrapper {
        flex-basis: auto;
        width: 100%;
        margin-top: 0;
        padding-left: 0;
    }

    /* 4. General Fixes */
    .home-image-container img {
        margin-top: 0;
    }

    .timeline {
        padding-left: 20px;
    }

    /* Gallery Mobile Controls */
    #prevBtn { left: 10px; }
    #nextBtn { right: 10px; }
    .gallery-btn {
        padding: 10px;
        background: rgba(0,0,0,0.5);
        border-radius: 5px;
    }
}