/* --- Global Layout --- */
/* --- Global Transitions --- */
body {
    transition: background-color 1.2s ease, color 0.8s ease;
    margin: 0;
}

/* --- Theme 1: SCRAMBLE (The Archive) --- */
body.theme-scramble {
    background-color: #f4ece1;
    font-family: 'Old Standard TT', serif;
}


/* --- Theme 2: PRESENT (The Interface) --- */
body.theme-present {
    background-color: #a7defc;
    color: #2c3e50;
    font-family: 'Inter', sans-serif;
}


/* --- Theme 3: DARK (The Redacted) --- */
body.theme-dark {
    background-color: #0a0a0a;
    color: #4294ff;
    font-family: 'Special Elite', monospace;
}

.blog-header {
    padding: 60px 20px;
    text-align: center;
    transition: all 1.2s ease;
}

.era-zone {
    padding: 80px 10%;
    min-height: 100vh;
}

/* --- The 60/40 Grid --- */
.toc-entry {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    margin-bottom: 120px;
    align-items: start;
}

/* --- LANDSCAPE (For Maps) --- */
.image-landscape {
    width: 100%;
    aspect-ratio: 16/9;
    background: rgba(0,0,0,0.05);
    overflow: hidden;
    margin: 20px 0;
}
.image-landscape img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* --- PORTRAIT (For Books) --- */
.image-portrait {
    width: 100%;
    display: flex;
    justify-content: center; /* Centers the book horizontally */
    padding: 30px 0;
    background: rgba(0,0,0,0.03); /* Lighter bg to let the book pop */
    margin: 20px 0;
}
.image-portrait img {
    /* Limits height so the book doesn't swallow the whole screen */
    max-height: 65vh; 
    width: auto;
    height: auto;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15); /* Adds a "3D book" feel */
    border-radius: 2px;
}


.ref-text {
    font-size: 0.85rem;
    margin-top: 10px;
    opacity: 0.8;
}

/* --- Theme 1: Scramble --- */
.era-scramble {
    background-color: #f4ece1;
    color: #3d2b1f;
    font-family: 'Old Standard TT', serif;
}
.era-scramble h2 { font-family: 'Pinyon Script', cursive; font-size: 2.5rem; }
.era-scramble .image-placeholder { border-color: #3d2b1f; background: #e0d1b1; }

/* --- Theme 2: Present --- */
.era-present {
    background-color: #a7defc;
    color: #2c3e50;
    font-family: 'Inter', sans-serif;
}
.era-present .image-placeholder { background: white; border: none; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }

/* --- Theme 3: Dark --- */
.era-dark {
    background-color: #0a0a0a;
    color: #4294ff;
    font-family: 'Special Elite', monospace;
}
.era-dark h2 { text-transform: uppercase; color: #ff0055; text-shadow: 0 0 10px #ff0055; }
.era-dark .image-placeholder { background: #111; border: 1px solid #4294ff; }


/* --- Master ToC Layout --- */
.master-toc {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding: 40px 10%;
    background-color: inherit;
    border-bottom: 1px solid rgba(51, 51, 51, 0.3);
    box-sizing: border-box;
    transition: padding 0.4s ease; /* Smoothly slim down */
}

/* --- The Toggle Button --- */
.toc-toggle-btn {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: 1px solid currentColor;
    color: inherit;
    padding: 8px 16px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.7rem;
    letter-spacing: 2px;
    display: none; /* Only show when stuck */
    opacity: 0;
    z-index: 1001;
}

/* --- Stuck State Tweaks --- */
.master-toc.is-stuck {
    padding: 15px 10%; /* Slimmer bar */
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.master-toc.is-stuck .toc-toggle-btn {
    display: block;
    opacity: 1;
}

/* --- The Column Content --- */
.toc-column {
    padding: 0 20px;
    border-left: 1px solid rgba(51, 51, 51, 0.2);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.toc-column:first-of-type { border-left: none; }

.toc-column h3 {
    font-size: 0.8rem;
    letter-spacing: 3px;
    margin: 0;
    margin-bottom: 25px; /* Vertical gap when at top */
    opacity: 0.5;
    transition: margin 0.4s ease;
}

/* When stuck, tuck the titles up */
.master-toc.is-stuck h3 { margin-bottom: 0; }
.master-toc.is-expanded h3 { margin-bottom: 20px; }

/* --- Dropdown Animation (Industry Standard) --- */
.collapsible-wrapper {
    display: grid;
    grid-template-rows: 1fr; /* Default: Open at top of page */
    transition: grid-template-rows 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    width: 100%;
}

/* The actual "Hide" logic */
.master-toc.is-stuck:not(.is-expanded) .collapsible-wrapper {
    grid-template-rows: 0fr;
}

.collapsible-wrapper ul {
    min-height: 0;
    margin: 0;
    padding: 0;
    list-style: none;
}

.collapsible-wrapper li { margin-bottom: 15px; }

.toc-column a {
    text-decoration: none;
    color: inherit;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}
.toc-column ul {
    list-style: none;
    padding: 0;
}



.toc-column a {
    text-decoration: none;
    color: inherit;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.column-content {
    position: relative;
    width: 100%;
}



/* --- Era-specific ToC Hover Effects --- */

/* Scramble: Italicizes and turns gold-ish */
.scramble-col a:hover {
    color: #e0d1b1;
    font-style: italic;
    padding-left: 10px;
}

/* Present: Modern white glow */
.present-col a:hover {
    color: #a7defc;
    text-shadow: 0 0 10px #fff;
}

/* Dark: Red/Blue Glitch effect */
.dark-col a:hover {
    color: #ff0055;
    text-shadow: 2px 0 #4294ff;
    font-family: 'Special Elite', monospace;
}

/* Smooth Scrolling for the whole page */
html {
    scroll-behavior: smooth;
}

/* --- Responsive Media Queries --- */

/* Mobile & Tablet Styles (under 768px) */
@media (max-width: 768px) {
    /* 1. Stack the ToC Columns */
    .master-toc {
        grid-template-columns: 1fr; /* Single column stack */
        padding: 20px 5%;
        gap: 10px;

    }
    /* 2. Remove borders and center-ish alignment */
    .toc-column {
        border-left: none;
        border-bottom: 1px solid rgba(51, 51, 51, 0.1);
        padding: 15px 0;
    }

    /* 3. Force Content to Dropdown by Default on Mobile */
    /* We treat mobile as if it's always "stuck" in terms of layout */
    .collapsible-wrapper {
        grid-template-rows: 0fr; 
    }

    /* Show when the master-toc is expanded OR specifically at the top if you prefer */
    .master-toc.is-expanded .collapsible-wrapper {
        grid-template-rows: 1fr;
    }

    /* 4. Make the 60/40 Blog Entries stack */
    .toc-entry {
        grid-template-columns: 1fr; /* Image and Text stack vertically */
        gap: 30px;
        margin-bottom: 60px;
    }

    .era-zone {
        padding: 40px 5%;
    }

    .blog-header h1 {
        font-size: 1.8rem;
    }

    /* Adjust the Toggle Button for mobile */
    .toc-toggle-btn {
        display: block !important; /* Always visible on mobile */
        opacity: 1 !important;
        right: 5%;
        top: 20px;
        transform: none;
    }
}


/* The Background Overlay */
.modal {
    display: none; /* Hidden by default */
    position: fixed;
    z-index: 2000; /* Above everything else */
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9); /* Darken background */
    justify-content: center;
    align-items: center;
    cursor: zoom-out;
}

/* When active, show as a flex container */
.modal.active {
    display: flex;
}

/* The Actual Expanded Image */
.modal-content {
    max-width: 90%;
    max-height: 90%;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
    border: 2px solid rgba(255,255,255,0.1);
    object-fit: contain; /* Shows the full image, no cropping */
    animation: zoomIn 0.3s ease;
}

/* Small animation for polish */
@keyframes zoomIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 40px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
}



/* Carousel Logic */
.carousel-container {
    position: relative;
    width: 100%;
}

/* Ensure the carousel box stays a consistent size */
.carousel-viewport {
    height: 60vh; /* Fixed height for the "stage" */
    background: rgba(0,0,0,0.02); /* Subtle floor for the objects */
    display: flex;
    align-items: center; 
    overflow: hidden;
    position: relative;
    border-radius: 8px;
}

.slide {
    min-width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
}

/* --- LANDSCAPE RULES --- */
.slide-landscape img {
    width: 100%;
    height: auto;
    max-height: 100%;
    object-fit: contain; /* Shows the whole map */
    border: 1px solid rgba(0,0,0,0.1);
}

/* --- PORTRAIT RULES --- */
.slide-portrait img {
    height: 100%; /* Take up full available height */
    width: auto;
    max-width: 100%;
    object-fit: contain;
    
    /* That dynamic shadow we built! */
    box-shadow: 0 10px 40px var(--portrait-shadow);
    transition: box-shadow 0.5s ease;
}

/* The "Track" that holds all the slides in a row */
.carousel-slides {
    display: flex; /* This lines them up side-by-side */
    width: 100%;
    height: 100%;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Ensure slides don't shrink and stay exactly the width of the viewport */
.slide {
    flex: 0 0 100%; /* Do not grow, do not shrink, stay 100% width */
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
}

/* Re-using your portrait image rules with the variable shadow */
.image-portrait .slide img {
    max-height: 60vh;
    width: auto;
    box-shadow: 0 10px 40px var(--portrait-shadow);
    transition: box-shadow 0.5s ease;
}

/* Nav Buttons Style */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.3);
    color: white;
    border: none;
    padding: 12px 15px;
    cursor: pointer;
    z-index: 5;
    border-radius: 0 4px 4px 0;
}

.next { right: 0; border-radius: 4px 0 0 4px; }
.carousel-btn:hover { background: rgba(0, 0, 0, 0.7); }

/* Caption Sync */
.carousel-caption {
    margin-top: 15px;
    min-height: 1.5em; /* Prevents text jumping */


}