/* ============================================================
   okurairi.net — Surrealist magazine from a parallel 1973
   ============================================================ */

:root {
    --bg-primary: #F5F0E8;
    --bg-secondary: #2C2A2E;
    --text-primary: #3A3632;
    --text-secondary: #6B6560;
    --accent-copper: #A0785A;
    --accent-teal: #5B8A8C;
    --highlight-amber: #D4A94B;
    --shadow-indigo: #3D4B6E;

    --font-display: "Playfair Display", "Lora", Georgia, serif;
    --font-body: "Source Serif 4", "Source Serif Pro", "Lora", Georgia, serif;
    --font-margin: "Crimson Pro", "Crimson Text", "Lora", Georgia, serif;

    --max-width: 1440px;
    --gutter: 32px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background: var(--bg-primary);
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.65;
    letter-spacing: 0.005em;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   Magazine container — scroll-snap
   ============================================================ */
.magazine {
    scroll-snap-type: y mandatory;
    height: 100vh;
    overflow-y: scroll;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-copper) transparent;
}

.magazine::-webkit-scrollbar {
    width: 6px;
}

.magazine::-webkit-scrollbar-track {
    background: transparent;
}

.magazine::-webkit-scrollbar-thumb {
    background: var(--accent-copper);
    border-radius: 3px;
}

/* ============================================================
   Spread base
   ============================================================ */
.spread {
    height: 100vh;
    min-height: 720px;
    width: 100%;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    position: relative;
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 64px 80px 120px;
    display: grid;
    grid-template-rows: auto 1fr auto;
    overflow: hidden;
}

.spread-deep {
    background: var(--bg-secondary);
    color: var(--bg-primary);
}

/* ============================================================
   Folio numbers (page numbers)
   ============================================================ */
.folio {
    position: absolute;
    top: 28px;
    font-family: var(--font-display);
    font-weight: 400;
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: lowercase;
    color: var(--accent-copper);
    font-variant-numeric: oldstyle-nums;
}

.folio-left {
    left: 32px;
}

.folio-right {
    right: 32px;
    font-style: italic;
}

.folio.dark {
    color: var(--highlight-amber);
}

/* ============================================================
   Spread divider — animated rule + rosette
   ============================================================ */
.spread-divider {
    position: absolute;
    bottom: 32px;
    left: 0;
    right: 0;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 0 80px;
}

.rule-line {
    flex: 1;
    height: 1px;
    background: var(--accent-copper);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

.divider-dark .rule-line {
    background: var(--highlight-amber);
}

.spread.is-active .rule-line {
    transform: scaleX(1);
}

.rosette {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transform: rotate(0deg);
    transition: transform 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

.spread.is-active .rosette {
    transform: rotate(90deg);
}

.rosette-large {
    width: 48px;
    height: 48px;
}

/* ============================================================
   Kicker (eyebrow)
   ============================================================ */
.kicker {
    display: inline-block;
    font-family: var(--font-margin);
    font-style: italic;
    font-weight: 400;
    font-size: 14px;
    letter-spacing: 0.2em;
    text-transform: lowercase;
    color: var(--accent-copper);
    margin-bottom: 18px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--accent-copper);
}

.kicker-dark {
    color: var(--highlight-amber);
    border-bottom-color: var(--highlight-amber);
}

/* ============================================================
   Headlines
   ============================================================ */
.spread-headline {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(36px, 5vw, 64px);
    line-height: 0.98;
    letter-spacing: -0.025em;
    color: var(--text-primary);
    margin-bottom: 28px;
    position: relative;
}

.spread-headline::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -10px;
    width: 80px;
    height: 2px;
    background: var(--highlight-amber);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.4s;
}

.spread.is-active .spread-headline::after {
    transform: scaleX(1);
}

.deep-headline,
.deep-headline + .text-body p {
    color: var(--bg-primary);
}

.deep-headline {
    color: var(--bg-primary);
}

/* ============================================================
   Body text
   ============================================================ */
.text-body p {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.65;
    color: var(--text-primary);
    text-indent: 2em;
    margin: 0;
    text-align: justify;
    hyphens: auto;
}

.text-body p:first-child {
    text-indent: 0;
}

.text-body p:first-child::first-letter {
    font-family: var(--font-display);
    font-size: 3.2em;
    font-weight: 900;
    float: left;
    line-height: 0.9;
    margin: 4px 8px 0 0;
    color: var(--accent-copper);
}

.text-body em {
    font-style: italic;
    color: var(--text-secondary);
}

.text-body .signature {
    margin-top: 24px;
    text-indent: 0;
    font-family: var(--font-margin);
    font-style: italic;
    color: var(--text-secondary);
    font-size: 16px;
    text-align: right;
}

.deep-body p,
.deep-body em {
    color: var(--bg-primary);
}

.deep-body p::first-letter {
    color: var(--highlight-amber);
}

.deep-body .signature-dark {
    color: var(--highlight-amber);
}

/* ============================================================
   SVG illustration framing
   ============================================================ */
.illustration,
.cat-illustration,
.margin-illustration svg {
    width: 100%;
    height: 100%;
    display: block;
}

.illustration .frame-rect,
.cat-illustration .frame-rect,
.margin-illustration svg .frame-rect {
    stroke-dasharray: 2984;
    stroke-dashoffset: 2984;
    transition: stroke-dashoffset 1.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.spread.is-active .illustration .frame-rect,
.spread.is-active .cat-illustration .frame-rect,
.spread.is-active .margin-illustration svg .frame-rect {
    stroke-dashoffset: 0;
}

.illustration .art-content,
.cat-illustration .art-content,
.margin-illustration svg .art-content {
    opacity: 0;
    transition: opacity 0.6s ease 1.2s;
}

.spread.is-active .illustration .art-content,
.spread.is-active .cat-illustration .art-content,
.spread.is-active .margin-illustration svg .art-content {
    opacity: 1;
}

.figure-caption {
    margin-top: 12px;
    font-family: var(--font-margin);
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.4;
    padding-left: 12px;
    border-left: 1px solid var(--accent-copper);
}

.figure-caption-dark {
    color: rgba(245, 240, 232, 0.75);
    border-left-color: var(--highlight-amber);
}

/* ============================================================
   SPREAD 1 — Cover
   ============================================================ */
.cover-grid {
    grid-row: 2;
    display: grid;
    grid-template-columns: 7fr 1fr 4fr;
    gap: 0;
    align-items: center;
    height: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
}

.cover-art {
    grid-column: 1;
    height: 80vh;
    max-height: 720px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cover-text {
    grid-column: 3;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding-left: 16px;
    border-left: 1px solid var(--accent-copper);
}

.masthead-eyebrow {
    font-family: var(--font-margin);
    font-style: italic;
    font-size: 16px;
    color: var(--accent-copper);
    letter-spacing: 0.05em;
    margin-bottom: 24px;
}

.masthead {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: clamp(64px, 9vw, 120px);
    line-height: 0.9;
    letter-spacing: -0.04em;
    color: var(--text-primary);
    margin: 0;
}

.masthead-rule {
    width: 60px;
    height: 2px;
    background: var(--highlight-amber);
    margin: 24px 0;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.4s;
}

.spread.is-active .masthead-rule {
    transform: scaleX(1);
}

.cover-subtitle {
    font-family: var(--font-body);
    font-size: 20px;
    line-height: 1.5;
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-style: italic;
}

.cover-meta {
    display: flex;
    gap: 24px;
    font-family: var(--font-margin);
    font-style: italic;
    font-size: 14px;
    color: var(--accent-copper);
    letter-spacing: 0.1em;
    text-transform: lowercase;
    padding-top: 16px;
    border-top: 1px solid rgba(160, 120, 90, 0.3);
}

/* ============================================================
   SPREAD 2 & 6 — Exhibition Plate
   ============================================================ */
.exhibition-grid {
    grid-row: 2;
    display: grid;
    grid-template-columns: 7fr 1fr 4fr;
    gap: 0;
    align-items: stretch;
    height: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
    padding: 24px 0;
}

.exhibition-art {
    grid-column: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
    max-height: 78vh;
}

.exhibition-art .illustration {
    flex: 1;
    max-height: 70vh;
}

.exhibition-text {
    grid-column: 3;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 16px;
    border-left: 1px solid var(--accent-copper);
}

.deep-text {
    grid-column: 1;
    border-left: none;
    border-right: 1px solid var(--highlight-amber);
    padding-left: 0;
    padding-right: 24px;
}

.deep-art {
    grid-column: 3;
}

/* ============================================================
   SPREAD 3 — Catalogue Raisonné (3 columns staircase)
   ============================================================ */
.catalogue-header {
    grid-row: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
    margin-bottom: 24px;
}

.catalogue-grid {
    grid-row: 2;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 48px;
    align-items: start;
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
    padding-top: 16px;
}

.cat-item {
    position: relative;
    padding-left: 16px;
    background-image: linear-gradient(to bottom, var(--accent-teal), var(--accent-teal));
    background-position: 0 0;
    background-repeat: no-repeat;
    background-size: 1px 0%;
    transition: background-size 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.3s;
}

.spread.is-active .cat-item {
    background-size: 1px 100%;
}

.cat-item-1 { transform: translateY(0); }
.cat-item-2 { transform: translateY(40px); }
.cat-item-3 { transform: translateY(80px); }

.cat-number {
    font-family: var(--font-display);
    font-weight: 400;
    font-style: italic;
    font-size: 32px;
    color: var(--accent-copper);
    margin-bottom: 8px;
    font-variant-numeric: oldstyle-nums;
}

.cat-illustration {
    width: 100%;
    height: 220px;
    margin-bottom: 16px;
}

.cat-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 26px;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.cat-text {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.55;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.cat-meta {
    display: block;
    font-family: var(--font-margin);
    font-style: italic;
    font-size: 13px;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
}

/* ============================================================
   SPREAD 4 — Foldout
   ============================================================ */
.foldout-grid {
    grid-row: 2;
    display: grid;
    grid-template-rows: 40% auto 60%;
    gap: 0;
    height: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
}

.foldout-headline-zone {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-start;
    padding-bottom: 32px;
}

.foldout-headline {
    font-size: clamp(40px, 6vw, 84px);
    line-height: 0.98;
    letter-spacing: -0.03em;
    max-width: 1100px;
}

.foldout-rule {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px 0;
}

.foldout-rule .rule-line {
    background: var(--accent-copper);
}

.foldout-caption-zone {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 48px;
    padding-top: 32px;
    align-items: start;
}

.caption-col p {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
}

.caption-col em {
    font-style: italic;
    color: var(--text-secondary);
}

.caption-title {
    font-family: var(--font-margin);
    font-style: italic;
    font-weight: 400;
    font-size: 20px;
    color: var(--accent-copper);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--accent-copper);
}

/* ============================================================
   SPREAD 5 — Margin Note
   ============================================================ */
.margin-grid {
    grid-row: 2;
    display: grid;
    grid-template-columns: 3fr 6fr 3fr;
    gap: 24px;
    align-items: start;
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
    padding-top: 16px;
    height: 100%;
}

.margin-left,
.margin-right {
    display: flex;
    flex-direction: column;
    gap: 32px;
    padding-top: 60px;
}

.margin-right {
    padding-top: 100px;
}

.margin-note {
    position: relative;
    font-family: var(--font-margin);
    font-style: italic;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-secondary);
    padding: 8px 12px;
    background-image: linear-gradient(to bottom, var(--accent-teal), var(--accent-teal));
    background-position: 0 0;
    background-repeat: no-repeat;
    background-size: 1px 0%;
    transition: background-size 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.4s;
}

.spread.is-active .margin-note {
    background-size: 1px 100%;
}

.margin-right .margin-note {
    background-position: right 0;
    padding-right: 12px;
    padding-left: 8px;
    text-align: right;
}

.margin-meta {
    display: block;
    margin-top: 6px;
    font-style: italic;
    font-size: 13px;
    color: var(--accent-copper);
    letter-spacing: 0.04em;
}

.margin-illustration {
    width: 100%;
    aspect-ratio: 1;
    max-width: 200px;
}

.margin-right .margin-illustration {
    margin-left: auto;
}

.connector {
    position: absolute;
    top: 50%;
    height: 1px;
    background: var(--text-secondary);
    transform: scaleX(0);
    transition: transform 0.4s ease 0.6s;
}

.connector-right {
    right: -24px;
    width: 24px;
    transform-origin: left center;
}

.connector-left {
    left: -24px;
    width: 24px;
    transform-origin: right center;
}

.spread.is-active .connector {
    transform: scaleX(1);
}

.margin-main {
    padding: 0 16px;
    border-left: 1px solid var(--accent-copper);
    border-right: 1px solid var(--accent-copper);
    align-self: center;
}

/* ============================================================
   SPREAD 7 — Index
   ============================================================ */
.index-grid {
    grid-row: 2;
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: 32px;
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
    height: 100%;
    padding-top: 16px;
}

.index-header {
    max-width: 800px;
}

.index-columns {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 64px;
    align-content: start;
    padding-top: 24px;
}

.index-list {
    list-style: none;
    border-top: 1px solid var(--accent-copper);
    padding-top: 12px;
}

.index-list li {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 10px 0;
    border-bottom: 1px dotted rgba(160, 120, 90, 0.3);
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--text-primary);
}

.idx-term {
    flex-shrink: 0;
    font-style: italic;
}

.idx-leader {
    flex: 1;
    border-bottom: 1px dotted var(--accent-copper);
    height: 1px;
    align-self: end;
    margin-bottom: 4px;
}

.idx-page {
    flex-shrink: 0;
    font-family: var(--font-display);
    font-variant-numeric: oldstyle-nums;
    color: var(--accent-copper);
    font-size: 16px;
}

.index-footer {
    max-width: 700px;
    font-family: var(--font-margin);
    font-style: italic;
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.5;
    padding-top: 16px;
    border-top: 1px solid var(--accent-copper);
}

/* ============================================================
   SPREAD 8 — Colophon (back cover)
   ============================================================ */
.colophon-grid {
    grid-row: 2;
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    max-width: 720px;
    margin: 0 auto;
    width: 100%;
    height: 100%;
    align-content: center;
    text-align: center;
    padding: 40px 0;
}

.colophon-mark {
    display: flex;
    justify-content: center;
}

.colophon-title {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: clamp(40px, 5vw, 56px);
    letter-spacing: -0.025em;
    line-height: 1;
    color: var(--text-primary);
}

.colophon-body p {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.65;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.colophon-body em {
    font-style: italic;
    color: var(--accent-copper);
}

.serif-name {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--text-primary);
}

.colophon-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px 0;
    border-top: 1px solid var(--accent-copper);
    border-bottom: 1px solid var(--accent-copper);
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
}

.colophon-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 4px 0;
    font-family: var(--font-body);
    font-size: 15px;
}

.meta-label {
    font-family: var(--font-margin);
    font-style: italic;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.meta-value {
    color: var(--text-primary);
    text-align: right;
}

.colophon-end {
    font-family: var(--font-margin);
    font-style: italic;
    font-size: 18px;
    color: var(--accent-copper);
    letter-spacing: 0.2em;
    padding-top: 12px;
}

/* ============================================================
   Page indicator (fixed)
   ============================================================ */
.page-indicator {
    position: fixed;
    right: 24px;
    bottom: 50%;
    transform: translateY(50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-variant-numeric: oldstyle-nums;
    font-size: 12px;
    color: var(--accent-copper);
    z-index: 50;
    pointer-events: none;
}

.indicator-current {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    transition: color 0.4s ease;
}

.spread-deep ~ .page-indicator,
body.is-dark .indicator-current {
    color: var(--bg-primary);
}

body.is-dark .page-indicator {
    color: var(--highlight-amber);
}

body.is-dark .indicator-rule {
    background: var(--highlight-amber);
}

.indicator-rule {
    width: 1px;
    height: 32px;
    background: var(--accent-copper);
    transition: background 0.4s ease;
}

.indicator-total {
    font-size: 12px;
    color: var(--text-secondary);
}

body.is-dark .indicator-total {
    color: rgba(245, 240, 232, 0.6);
}

/* ============================================================
   Mobile (< 768px)
   ============================================================ */
@media (max-width: 768px) {
    .spread {
        padding: 56px 24px 100px;
        min-height: 100vh;
        height: auto;
    }

    .magazine {
        scroll-snap-type: y proximity;
    }

    .cover-grid,
    .exhibition-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .cover-art,
    .exhibition-art {
        grid-column: 1;
        height: 50vh;
        max-height: 420px;
    }

    .cover-text,
    .exhibition-text,
    .deep-text {
        grid-column: 1;
        border-left: none;
        border-right: none;
        padding-left: 0;
        padding-right: 0;
        border-top: 1px solid var(--accent-copper);
        padding-top: 24px;
    }

    .deep-text {
        border-top-color: var(--highlight-amber);
    }

    .catalogue-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .cat-item-1,
    .cat-item-2,
    .cat-item-3 {
        transform: translateY(0);
    }

    .foldout-grid {
        grid-template-rows: auto auto auto;
    }

    .foldout-caption-zone {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .margin-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .margin-left,
    .margin-right {
        padding-top: 0;
        flex-direction: column;
    }

    .margin-main {
        border-left: none;
        border-right: none;
        padding: 0;
        border-top: 1px solid var(--accent-copper);
        border-bottom: 1px solid var(--accent-copper);
        padding: 24px 0;
    }

    .margin-right .margin-note {
        background-position: 0 0;
        text-align: left;
        padding-left: 12px;
        padding-right: 8px;
    }

    .index-columns {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .spread-headline {
        font-size: clamp(28px, 7vw, 40px);
    }

    .masthead {
        font-size: clamp(56px, 14vw, 88px);
    }

    .page-indicator {
        right: 12px;
    }

    .folio-left {
        left: 16px;
    }

    .folio-right {
        right: 16px;
    }

    .spread-divider {
        padding: 0 24px;
    }
}

/* ============================================================
   Reduced motion preference
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    .rule-line,
    .rosette,
    .masthead-rule,
    .spread-headline::after,
    .cat-item,
    .margin-note,
    .connector,
    .illustration .frame-rect,
    .cat-illustration .frame-rect,
    .margin-illustration svg .frame-rect,
    .illustration .art-content,
    .cat-illustration .art-content,
    .margin-illustration svg .art-content {
        transition: none !important;
    }

    .spread .rule-line { transform: scaleX(1); }
    .spread .rosette { transform: rotate(90deg); }
    .spread .masthead-rule { transform: scaleX(1); }
    .spread .spread-headline::after { transform: scaleX(1); }
    .spread .illustration .frame-rect,
    .spread .cat-illustration .frame-rect,
    .spread .margin-illustration svg .frame-rect { stroke-dashoffset: 0; }
    .spread .illustration .art-content,
    .spread .cat-illustration .art-content,
    .spread .margin-illustration svg .art-content { opacity: 1; }
    .spread .cat-item { background-size: 1px 100%; }
    .spread .margin-note { background-size: 1px 100%; }
    .spread .connector { transform: scaleX(1); }
}