/* ============================================================
   bunny.quest — Dark Academia Generative Art Cabinet
   Colors: #1A1410 #2C2218 #3D3020 #4A7A7A #8A7A60 #C8B89A #E8DFC8 #B8962E
   Fonts: Playfair Display (Google Fonts) Inter — Interactive elements use
   footnote triggers; paragraph scrolls into view with `threshold: 0.15`.
   On entry at section IntersectionObserver with `threshold: 0.15`.
   ============================================================ */

/* ---- Custom Properties ---- */
:root {
    --espresso:     #1A1410;
    --dark-umber:   #2C2218;
    --deep-oak:     #3D3020;
    --teal-accent:  #4A7A7A;
    --parchment-dk: #8A7A60;
    --parchment:    #C8B89A;
    --cream:        #E8DFC8;
    --gold:         #B8962E;

    --font-display: 'Playfair Display', Georgia, serif;
    --font-body:    'Inter', system-ui, sans-serif;

    --scroll-y:     0;
    --section-progress: 0;
}

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

/* #000 — absolute black reference (deep shadows) */
.shadow-deep { text-shadow: 0 2px 8px #000; }

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

body {
    background-color: var(--espresso);
    color: var(--cream);
    font-family: var(--font-body);
    overflow-x: hidden;
    cursor: default;
}

/* ---- Navigation ---- */
#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.2rem 3rem;
    background: linear-gradient(to bottom, rgba(26,20,16,0.95) 0%, rgba(26,20,16,0) 100%);
    pointer-events: none;
}

#main-nav > * {
    pointer-events: auto;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.25em;
    color: var(--gold);
    text-transform: lowercase;
}

.nav-volumes {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--parchment-dk);
    text-decoration: none;
    letter-spacing: 0.15em;
    transition: color 0.3s ease;
    cursor: pointer;
}

.nav-link:hover {
    color: var(--gold);
}

.nav-progress {
    width: 80px;
    height: 1px;
    background: rgba(200, 184, 154, 0.2);
    position: relative;
}

#nav-progress-bar {
    height: 100%;
    width: 0%;
    background: var(--gold);
    transition: width 0.1s linear;
}

/* ---- Parallax Sections ---- */
.parallax-section {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

/* ---- Parallax Layers ---- */
.parallax-layer {
    position: absolute;
    top: -30%;
    left: 0;
    right: 0;
    bottom: -30%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.layer-deep {
    will-change: transform;
    z-index: 1;
}

.layer-mid {
    will-change: transform;
    z-index: 2;
}

.layer-fore {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 3;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8vh 8vw;
    pointer-events: none;
}

.layer-fore > * {
    pointer-events: auto;
}

/* ---- Canvas (Generative Art) ---- */
.botanical-canvas {
    width: 100%;
    height: 100%;
    display: block;
    opacity: 0.6;
}

/* ---- Texture Overlays ---- */
.texture-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.08;
    background-image:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='400' height='400' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
    background-size: 300px 300px;
}

.ruled-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 28px,
        rgba(200, 184, 154, 0.04) 28px,
        rgba(200, 184, 154, 0.04) 29px
    );
}

.manuscript-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 36px,
        rgba(200, 184, 154, 0.05) 36px,
        rgba(200, 184, 154, 0.05) 37px
    );
}

/* ---- Volume I — Frontispiece ---- */
#volume-i {
    background: var(--espresso);
}

#layer-deep-i {
    background: radial-gradient(ellipse at 30% 60%, var(--deep-oak) 0%, var(--espresso) 70%);
}

#layer-mid-i {
    background: transparent;
}

.frontispiece-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    max-width: 700px;
    padding-left: 5vw;
}

.volume-label {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.4em;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.display-title {
    font-family: var(--font-display);
    font-size: clamp(56px, 8vw, 96px);
    font-weight: 400;
    line-height: 1.05;
    color: var(--cream);
    display: flex;
    flex-direction: column;
    margin-bottom: 1.5rem;
    transition: font-weight 0.1s linear;
}

.title-line {
    display: block;
}

.title-line.accent {
    color: var(--gold);
    font-style: italic;
}

.subtitle {
    font-size: 1rem;
    font-weight: 300;
    color: var(--parchment);
    letter-spacing: 0.08em;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.ornamental-rule {
    width: 100%;
    max-width: 400px;
    height: 1px;
    background: linear-gradient(to right, var(--gold), var(--parchment-dk), transparent);
    margin: 1rem 0;
    position: relative;
}

.ornamental-rule::before {
    content: '◆';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gold);
    font-size: 0.5rem;
}

.domain-stamp {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--gold);
    text-transform: lowercase;
    margin: 0.5rem 0;
}

.edition-note {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--parchment-dk);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-top: 0.5rem;
}

.scroll-invitation {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    font-weight: 300;
    letter-spacing: 0.25em;
    color: var(--parchment-dk);
    animation: breathe 3s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% { opacity: 0.4; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.9; transform: translateX(-50%) translateY(-4px); }
}

/* ---- Volume II — Cabinet ---- */
#volume-ii {
    background: var(--dark-umber);
}

#layer-deep-ii {
    background: radial-gradient(ellipse at 70% 40%, var(--deep-oak) 0%, var(--dark-umber) 65%);
}

.section-ornament {
    font-size: 1.5rem;
    color: var(--gold);
    margin-bottom: 1rem;
    display: block;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(40px, 5.5vw, 72px);
    font-weight: 400;
    line-height: 1.1;
    color: var(--cream);
    margin-bottom: 2rem;
    transition: font-weight 0.1s linear;
}

.section-title em {
    color: var(--gold);
    font-style: italic;
}

.asymmetric-left {
    padding-left: 5vw;
    max-width: 61.8vw;
}

.asymmetric-right {
    margin-left: auto;
    padding-right: 5vw;
    max-width: 61.8vw;
    text-align: left;
}

.entry-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
}

.cabinet-entry {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(200, 184, 154, 0.1);
    border-left: 2px solid var(--gold);
    padding: 1.2rem 1.4rem;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease, border-color 0.3s ease;
}

.cabinet-entry.revealed {
    opacity: 1;
    transform: translateY(0);
}

.cabinet-entry:hover {
    border-color: rgba(200, 184, 154, 0.3);
    border-left-color: var(--gold);
    background: rgba(255,255,255,0.04);
}

.entry-numeral {
    font-size: 0.65rem;
    letter-spacing: 0.3em;
    color: var(--gold);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.entry-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--cream);
    margin-bottom: 0.6rem;
    line-height: 1.3;
}

.entry-text {
    font-size: 0.82rem;
    font-weight: 300;
    color: var(--parchment);
    line-height: 1.7;
    margin-bottom: 0.8rem;
}

.entry-tag {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: var(--parchment-dk);
    text-transform: uppercase;
}

/* ---- Volume III — Apparatus ---- */
#volume-iii {
    background: var(--espresso);
}

#layer-deep-iii {
    background: radial-gradient(ellipse at 20% 50%, #1a2a2a 0%, var(--espresso) 60%);
}

.apparatus-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.body-text {
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--parchment);
    line-height: 1.9;
    max-width: 50ch;
    margin-bottom: 2rem;
}

.methodology-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
}

.method-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.method-item.revealed {
    opacity: 1;
    transform: translateX(0);
}

.method-glyph {
    font-size: 1rem;
    color: var(--teal-accent);
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.method-details {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.method-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--cream);
    letter-spacing: 0.05em;
}

.method-desc {
    font-size: 0.78rem;
    font-weight: 300;
    color: var(--parchment-dk);
    line-height: 1.5;
}

.apparatus-diagram {
    position: absolute;
    right: -5%;
    top: 10%;
    width: 45%;
    height: 80%;
    opacity: 0.15;
    pointer-events: none;
}

/* ---- Volume IV — Codex ---- */
#volume-iv {
    background: var(--dark-umber);
}

#layer-deep-iv {
    background: radial-gradient(ellipse at 60% 30%, #2a2010 0%, var(--dark-umber) 60%);
}

.codex-content {
    max-width: 65vw;
}

.codex-illumination {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
    margin-top: 0.5rem;
}

.illuminated-initial {
    font-family: var(--font-display);
    font-size: 7rem;
    font-weight: 900;
    line-height: 0.85;
    color: var(--gold);
    float: left;
    margin-right: 1rem;
    margin-top: 0.1rem;
    text-shadow: 2px 2px 0 var(--espresso), -1px -1px 0 var(--deep-oak);
    flex-shrink: 0;
}

.codex-text-block {
    flex: 1;
}

.drop-cap {
    font-size: 0.88rem;
    font-weight: 300;
    color: var(--parchment);
    line-height: 1.85;
    margin-bottom: 1rem;
    font-style: normal;
}

.drop-cap em {
    color: var(--cream);
    font-style: italic;
}

.codex-marginalia {
    margin-top: 1.5rem;
    border-top: 1px solid rgba(200, 184, 154, 0.15);
    padding-top: 1rem;
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.marginalia-note {
    font-size: 0.7rem;
    font-weight: 300;
    color: var(--parchment-dk);
    letter-spacing: 0.05em;
    font-style: italic;
}

.marginalia-note em {
    color: var(--parchment);
}

/* ---- Volume V — Colophon ---- */
#volume-v {
    background: var(--espresso);
}

#layer-deep-v {
    background: radial-gradient(ellipse at 50% 50%, var(--dark-umber) 0%, var(--espresso) 70%);
}

.colophon-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.colophon-title {
    text-align: center;
    margin-bottom: 2rem;
}

.colophon-device {
    margin: 1.5rem 0;
    animation: colophon-spin 60s linear infinite;
}

@keyframes colophon-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

#colophon-emblem {
    width: 120px;
    height: 120px;
}

.colophon-text {
    margin: 1.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.colophon-text p {
    font-size: 0.82rem;
    font-weight: 300;
    color: var(--parchment-dk);
    letter-spacing: 0.08em;
    font-style: italic;
}

.colophon-rule {
    width: 200px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--gold), transparent);
    margin: 1.5rem auto;
}

.colophon-footer {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.footer-domain {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--gold);
    letter-spacing: 0.15em;
}

.footer-separator {
    color: var(--parchment-dk);
    font-size: 0.8rem;
}

.footer-year {
    font-size: 0.8rem;
    font-weight: 300;
    color: var(--parchment-dk);
    letter-spacing: 0.1em;
}

.footer-motto {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-style: italic;
    color: var(--parchment);
    letter-spacing: 0.05em;
}

/* ---- Section Backgrounds ---- */
#volume-i .layer-deep {
    background-color: var(--espresso);
}

#volume-ii .layer-deep {
    background-color: var(--dark-umber);
}

#volume-iii .layer-deep {
    background-color: var(--espresso);
}

#volume-iv .layer-deep {
    background-color: var(--dark-umber);
}

#volume-v .layer-deep {
    background-color: var(--espresso);
}

/* ---- Woodcut Panel ---- */
.woodcut-panel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 3px,
        rgba(200, 184, 154, 0.015) 3px,
        rgba(200, 184, 154, 0.015) 4px
    );
    pointer-events: none;
}

/* ---- Inter Text Utility ---- */
.inter-text {
    font-family: var(--font-body);
}

/* ---- Data Scroll Weight Elements ---- */
[data-scroll-weight] {
    font-weight: 400;
    transition: font-variation-settings 0.05s linear;
}

/* ---- Reveal Animation Base ---- */
[data-reveal] {
    opacity: 0;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .entry-grid {
        grid-template-columns: 1fr;
    }

    .asymmetric-left,
    .asymmetric-right {
        max-width: 90vw;
        margin-left: 0;
        padding-left: 5vw;
        padding-right: 5vw;
    }

    .codex-illumination {
        flex-direction: column;
    }

    .illuminated-initial {
        font-size: 4rem;
    }

    .codex-marginalia {
        flex-direction: column;
        gap: 0.5rem;
    }

    #main-nav {
        padding: 1rem 1.5rem;
    }

    .nav-volumes {
        gap: 1rem;
    }

    .colophon-footer {
        flex-wrap: wrap;
        justify-content: center;
    }

    .layer-fore {
        padding: 8vh 5vw;
    }

    .frontispiece-content {
        padding-left: 0;
    }
}

@media (max-width: 600px) {
    .display-title {
        font-size: 40px;
    }

    .section-title {
        font-size: 32px;
    }

    .entry-grid {
        gap: 1rem;
    }

    .nav-volumes {
        display: none;
    }
}