/* =============================================
   xbom.wiki - Cottagecore Futuristic Design
   Palette: Honeyed Neutral with Paper Aging
   Layout: Magazine Spread / Book Simulation
   ============================================= */

/* --- CSS Custom Properties --- */
:root {
    --parchment-cream: #F5F0E6;
    --warm-ivory: #FFF8EF;
    --umber-ink: #3A2E1F;
    --tawny-brown: #5C4A32;
    --dusty-khaki: #8B7355;
    --harvest-gold: #C9B896;
    --honeycomb-amber: #D4A545;
    --verdigris-teal: #4A8C7F;
    --patina-copper: #7B6B4E;
    --bone-white: #EDE8DD;
    --warm-gleam: #E0D5C0;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background: var(--parchment-cream);
    color: var(--umber-ink);
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(0.95rem, 1.8vw, 1.1rem);
    line-height: 1.72;
    overflow-x: hidden;
    position: relative;
}

/* --- Paper Texture Layer --- */
#paper-texture {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    background:
        url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" width="256" height="256"%3E%3Cfilter id="noise"%3E%3CfeTurbulence baseFrequency="0.9" numOctaves="4" result="noise" /%3E%3C/filter%3E%3Crect width="256" height="256" fill="%23F5F0E6" filter="url(%23noise)" opacity="0.03"/%3E%3C/svg%3E') 0 0 / 256px 256px,
        radial-gradient(ellipse at 20% 80%, rgba(139,115,85,0.04) 0%, transparent 60%),
        radial-gradient(ellipse at 85% 15%, rgba(139,115,85,0.03) 0%, transparent 50%),
        linear-gradient(180deg, var(--parchment-cream) 0%, #EDE8DD 100%);
    background-attachment: fixed;
}

/* --- Folio Header --- */
#folio-header {
    position: sticky;
    top: 0;
    width: 100%;
    height: 48px;
    background: var(--parchment-cream);
    border-bottom: 1px solid var(--harvest-gold);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    z-index: 100;
    backdrop-filter: blur(1px);
    box-shadow: 0 1px 0 0 rgba(92,74,50,0.08);
}

.folio-domain {
    font-family: 'Libre Baskerville', serif;
    font-style: italic;
    font-size: 14px;
    color: var(--tawny-brown);
    font-weight: 400;
}

.folio-nav {
    display: flex;
    gap: 2rem;
}

.folio-link {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 400;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dusty-khaki);
    text-decoration: none;
    transition: color 300ms ease;
    position: relative;
}

.folio-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--verdigris-teal);
    transition: width 300ms ease;
}

.folio-link:hover {
    color: var(--honeycomb-amber);
}

.folio-link:hover::after {
    width: 100%;
}

@media (max-width: 768px) {
    #folio-header {
        flex-direction: column;
        height: auto;
        padding: 1rem;
        gap: 0.5rem;
    }

    .folio-nav {
        flex-wrap: wrap;
        gap: 0.5rem;
        justify-content: center;
    }

    .folio-link {
        font-size: 9px;
        gap: 0.5rem;
    }
}

/* --- Cover Spread (Hero) --- */
.cover-spread {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--parchment-cream);
    overflow: hidden;
    padding-top: 48px;
    z-index: 10;
    box-shadow: inset 0 0 80px rgba(139,115,85,0.06);
}

.cover-content {
    position: relative;
    text-align: center;
    max-width: 900px;
    z-index: 2;
}

#hero-tree {
    position: absolute;
    width: 400px;
    height: 600px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.15;
    z-index: 0;
    pointer-events: none;
}

.tree-trunk,
.tree-branch {
    stroke: var(--harvest-gold);
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: draw-path 3s ease-out forwards;
}

.tree-leaf {
    fill: var(--harvest-gold);
    opacity: 0;
    animation: fade-in-leaf 200ms ease-out forwards;
}

@keyframes draw-path {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes fade-in-leaf {
    0% {
        opacity: 0;
        r: 3;
    }
    100% {
        opacity: 1;
        r: 6;
    }
}

.cover-title {
    font-family: 'Libre Baskerville', serif;
    font-weight: 700;
    font-size: clamp(5rem, 14vw, 12rem);
    color: var(--umber-ink);
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.cover-subtitle {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: clamp(1.5rem, 4vw, 3rem);
    color: var(--dusty-khaki);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.decorative-rule {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

.diamond {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--harvest-gold);
    transform: rotate(45deg);
    opacity: 0;
    animation: fade-in 600ms ease-out forwards;
    animation-delay: 200ms;
}

.diamond:nth-child(2) {
    animation-delay: 250ms;
}

.diamond:nth-child(3) {
    animation-delay: 300ms;
}

.cover-tagline {
    font-family: 'Libre Baskerville', serif;
    font-style: italic;
    font-size: clamp(1rem, 2.5vw, 1.8rem);
    color: var(--tawny-brown);
    max-width: 600px;
    margin: 0 auto;
}

/* --- Skeleton Loading --- */
.skeleton-load {
    position: relative;
    background: linear-gradient(
        110deg,
        var(--bone-white) 25%,
        var(--warm-gleam) 37%,
        var(--bone-white) 50%
    );
    background-size: 200% 100%;
    animation: page-turn-shimmer 1.8s ease-in-out infinite;
    opacity: 0;
    animation: page-turn-shimmer 1.8s ease-in-out infinite, fade-in 600ms ease-out 500ms forwards;
}

@keyframes page-turn-shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.skeleton-load::after {
    content: '';
    display: none;
}

/* --- Content Spreads --- */
.content-spread {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 4rem 2rem;
    background: var(--parchment-cream);
    z-index: 5;
    box-shadow: inset 0 0 80px rgba(139,115,85,0.04);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 800ms ease, transform 800ms ease;
}

.content-spread.visible {
    opacity: 1;
    transform: translateY(0);
}

.content-spread.spread-alt {
    background: linear-gradient(180deg, #FBF8F0 0%, var(--parchment-cream) 100%);
}

.spread-inner {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

/* --- Spread Grid (2 columns) --- */
.spread-grid {
    display: grid;
    grid-template-columns: 1fr 4rem 1fr;
    gap: 4rem;
    align-items: start;
}

@media (max-width: 768px) {
    .spread-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* --- Verso & Recto Columns --- */
.verso-col,
.recto-col {
    position: relative;
}

.verso-col {
    padding-right: 2rem;
}

.recto-col {
    padding-left: 2rem;
}

@media (max-width: 768px) {
    .verso-col,
    .recto-col {
        padding: 0;
    }
}

/* --- Gutter Rule --- */
.gutter-rule {
    width: 1px;
    background: var(--harvest-gold);
    opacity: 0.4;
}

@media (max-width: 768px) {
    .gutter-rule {
        display: none;
    }
}

/* --- Section Headings --- */
.section-heading {
    font-family: 'Libre Baskerville', serif;
    font-weight: 700;
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    color: var(--umber-ink);
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    border-radius: 4px;
}

/* --- Body Text --- */
.body-text {
    color: var(--umber-ink);
    margin-bottom: 1.2rem;
    max-width: 38em;
    opacity: 0;
    animation: fade-in 600ms ease-out forwards;
}

.body-text:nth-of-type(1) { animation-delay: 100ms; }
.body-text:nth-of-type(2) { animation-delay: 200ms; }
.body-text:nth-of-type(3) { animation-delay: 300ms; }

.body-text strong {
    font-weight: 600;
}

/* --- Margin Annotations --- */
.margin-annotation {
    position: relative;
    margin-bottom: 2rem;
    max-width: 180px;
    opacity: 0;
    animation: fade-in 600ms ease-out 400ms forwards;
}

.manicule {
    font-size: 1rem;
    margin-right: 0.5rem;
    color: var(--honeycomb-amber);
}

.annotation-text {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 400;
    font-size: 11px;
    color: var(--dusty-khaki);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    display: block;
}

.margin-annotation:hover .annotation-text {
    color: var(--honeycomb-amber);
    transition: color 300ms ease;
}

/* --- Component Diagram (Pressed Flower Style) --- */
.component-diagram {
    position: relative;
    width: 280px;
    height: 280px;
    margin: 2rem auto;
    background: var(--warm-ivory);
    border: 2px solid var(--harvest-gold);
    border-radius: 8px;
    padding: 1rem;
    opacity: 0;
    animation: fade-in 600ms ease-out 500ms forwards;
}

.diagram-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--parchment-cream);
    border: 2px solid var(--harvest-gold);
    border-radius: 6px;
    padding: 0.8rem 1.2rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--umber-ink);
    z-index: 2;
    width: 100px;
    text-align: center;
}

.diagram-petal {
    position: absolute;
    width: 70px;
    height: 40px;
    background: var(--warm-ivory);
    border: 1px solid var(--harvest-gold);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--tawny-brown);
    font-weight: 500;
    cursor: pointer;
    transition: all 300ms ease;
}

.diagram-petal:hover {
    transform: translateY(-3px);
    box-shadow: 0 2px 8px rgba(201,184,150,0.3);
    border-color: var(--honeycomb-amber);
}

.petal-1 { top: 20px; left: 50%; transform: translateX(-50%); }
.petal-2 { top: 50%; right: 10px; transform: translateY(-50%); }
.petal-3 { bottom: 20px; left: 50%; transform: translateX(-50%); }
.petal-4 { top: 50%; left: 10px; transform: translateY(-50%); }

/* --- Component List --- */
.component-list {
    margin-top: 2rem;
    opacity: 0;
    animation: fade-in 600ms ease-out 600ms forwards;
}

.list-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.8rem;
    color: var(--umber-ink);
    font-size: 0.95rem;
}

.hex-marker {
    color: var(--harvest-gold);
    margin-right: 0.8rem;
    font-weight: 700;
}

.item-label {
    position: relative;
}

/* --- Code Block --- */
.code-block {
    background: var(--warm-ivory);
    border: 1px solid var(--harvest-gold);
    border-left: 3px solid var(--harvest-gold);
    padding: 1.2rem;
    margin: 1.5rem 0;
    border-radius: 4px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.9rem;
    color: var(--tawny-brown);
    line-height: 1.6;
    opacity: 0;
    animation: fade-in 600ms ease-out 700ms forwards;
}

.code-block code {
    display: block;
    margin-bottom: 0.4rem;
}

.code-block code:last-child {
    margin-bottom: 0;
}

/* --- Illustration Plate --- */
.illustration-plate {
    background: var(--warm-ivory);
    border: 2px double var(--harvest-gold);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 2rem 0;
    opacity: 0;
    animation: fade-in 600ms ease-out 800ms forwards;
}

.plate-frame {
    background: var(--parchment-cream);
    border: 1px solid var(--harvest-gold);
    padding: 1rem;
    margin-bottom: 0.8rem;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dependency-tree {
    font-family: 'Josefin Sans', sans-serif;
    font-size: 0.85rem;
    color: var(--umber-ink);
}

.tree-node {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--harvest-gold);
    border-radius: 4px;
    background: #FBF8F0;
    display: inline-block;
    margin: 0.2rem;
}

.tree-node.root {
    font-weight: 600;
    background: var(--warm-ivory);
    border-color: var(--tawny-brown);
}

.tree-node.leaf {
    font-size: 0.75rem;
    opacity: 0.8;
}

.tree-children {
    margin-top: 0.6rem;
    margin-left: 1rem;
    padding-left: 0.8rem;
    border-left: 1px dashed var(--harvest-gold);
}

.plate-caption {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: 11px;
    text-align: center;
    color: var(--dusty-khaki);
    letter-spacing: 0.08em;
}

/* --- Standards Table --- */
.standards-table {
    margin-top: 1.5rem;
    opacity: 0;
    animation: fade-in 600ms ease-out 700ms forwards;
}

.std-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
    padding: 0.8rem;
    border-bottom: 1px solid var(--harvest-gold);
    align-items: center;
}

.std-row:last-child {
    border-bottom: none;
}

.std-name {
    font-weight: 600;
    color: var(--umber-ink);
    font-size: 0.95rem;
}

.std-org {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.8rem;
    color: var(--tawny-brown);
}

.std-use {
    font-size: 0.85rem;
    color: var(--dusty-khaki);
}

@media (max-width: 768px) {
    .std-row {
        grid-template-columns: 1fr;
        gap: 0.3rem;
    }
}

/* --- Section Divider --- */
.section-divider {
    width: 60%;
    max-width: 300px;
    height: 1px;
    background: var(--harvest-gold);
    margin: 4rem auto;
    position: relative;
    z-index: 5;
}

.section-divider::before,
.section-divider::after {
    content: '✦';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--harvest-gold);
    font-size: 1rem;
}

.section-divider::before {
    left: -1.2rem;
}

.section-divider::after {
    right: -1.2rem;
}

/* --- Footer --- */
#page-footer {
    position: relative;
    z-index: 5;
    background: var(--parchment-cream);
    border-top: 1px solid var(--harvest-gold);
    padding: 3rem 2rem;
    text-align: center;
    margin-top: 2rem;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
}

.footer-text {
    font-family: 'Libre Baskerville', serif;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--umber-ink);
    margin-bottom: 0.5rem;
}

.footer-sub {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 400;
    font-size: 0.95rem;
    color: var(--dusty-khaki);
    margin-bottom: 0.5rem;
}

.footer-attribution {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: 0.85rem;
    color: var(--tawny-brown);
    font-style: italic;
}

/* --- Responsive Adjustments --- */
@media (max-width: 768px) {
    body {
        font-size: 1rem;
    }

    .cover-spread {
        min-height: 80vh;
        padding-top: 48px;
    }

    #hero-tree {
        opacity: 0.08;
    }

    .content-spread {
        min-height: auto;
        padding: 2rem 1rem;
    }

    .spread-grid {
        gap: 1.5rem;
    }

    .verso-col {
        padding-right: 0;
    }

    .recto-col {
        padding-left: 0;
    }

    .folio-nav {
        flex-direction: column;
        gap: 0.5rem;
        font-size: 9px;
    }

    .component-diagram {
        width: 100%;
        height: 250px;
    }
}

/* --- Print Styles --- */
@media print {
    #folio-header,
    #page-footer {
        display: none;
    }

    .content-spread {
        page-break-inside: avoid;
        opacity: 1;
        transform: none;
    }
}