/* =====================================================================
   political.quest — A Stratigraphic Inquiry
   Sepia-nostalgic / Garamond-classic / archaeological vertical descent
   ===================================================================== */

/* ---------- Tokens ---------- */
:root {
    /* Palette */
    --parchment:        #F4EDE4;
    --parchment-deep:   #EDE5D8;
    --vellum-shadow:    #D4C9B8;
    --iron-ink:         #2A1F14;
    --iron-ink-soft:    #3D2B1F;
    --diplomatic-navy:  #1B2D4A;
    --seal-vermillion:  #9B3A2E;
    --gilt-edge:        #C4A265;
    --quill-gray:       #8A7E72;

    /* Typography */
    --ff-display:       "EB Garamond", "Cormorant Garamond", Georgia, serif;
    --ff-body:          "Source Serif 4", "EB Garamond", Georgia, serif;
    --ff-grotesk:       "Schibsted Grotesk", "Inter", "Helvetica Neue", Arial, sans-serif;
    --ff-watermark:     "Cormorant", "EB Garamond", serif;

    /* Layout */
    --gutter:           clamp(24px, 4vw, 80px);
    --max-w:            1320px;
    --col-primary:      40%;
    --col-margin:       35%;
    --col-gap:          25%;
    --reading-w:        38em;

    /* Stratum tints (descend = warmer) */
    --tint-i:           #F4EDE4;
    --tint-ii:          #F2EAE0;
    --tint-iii:         #EFE6DA;
    --tint-iv:          #ECE2D4;
    --tint-v:           #E8DCCA;
}

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

html {
    scroll-behavior: smooth;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    background: var(--parchment);
    color: var(--iron-ink);
    font-family: var(--ff-body);
    font-size: 18px;
    line-height: 1.72;
    font-feature-settings: "kern" 1, "liga" 1, "onum" 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img, svg {
    display: block;
    max-width: 100%;
}

button {
    font: inherit;
    color: inherit;
    background: none;
    border: 0;
    cursor: pointer;
}

a {
    color: var(--diplomatic-navy);
    text-decoration: none;
    border-bottom: 1px solid color-mix(in srgb, var(--diplomatic-navy) 35%, transparent);
    transition: color 200ms ease, border-color 200ms ease;
}

a:hover {
    color: var(--seal-vermillion);
    border-bottom-color: var(--seal-vermillion);
}

/* ---------- Paper texture overlay ---------- */
.paper-texture {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    opacity: 0.045;
    mix-blend-mode: multiply;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='320' height='320'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' seed='7'/><feColorMatrix values='0 0 0 0 0.165  0 0 0 0 0.122  0 0 0 0 0.078  0 0 0 1 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
    background-size: 320px 320px;
    will-change: transform;
}

/* secondary, slower paper grain — fibrous overlay */
.paper-texture::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='480' height='480'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.35' numOctaves='3' seed='11'/><feColorMatrix values='0 0 0 0 0.42  0 0 0 0 0.32  0 0 0 0 0.22  0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
    background-size: 480px 480px;
    opacity: 0.6;
    mix-blend-mode: multiply;
}

/* ---------- Index Marginalia (Roman numeral nav) ---------- */
.index-marginalia {
    position: fixed;
    right: 28px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 50;
    opacity: 0.4;
    transition: opacity 280ms ease;
}

.index-marginalia:hover {
    opacity: 0.85;
}

.index-marginalia ol {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.index-marginalia li {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    font-family: var(--ff-grotesk);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--iron-ink);
    cursor: pointer;
    position: relative;
    transition: color 220ms ease;
}

.index-marginalia .numeral {
    font-family: var(--ff-display);
    font-style: italic;
    font-size: 14px;
    letter-spacing: 0;
    text-transform: none;
    color: var(--iron-ink);
    min-width: 28px;
    text-align: right;
    order: 3;
}

.index-marginalia .label {
    opacity: 0;
    transform: translateX(8px);
    transition: opacity 220ms ease, transform 220ms ease;
    color: var(--quill-gray);
    order: 1;
}

.index-marginalia .dash {
    width: 0;
    height: 1px;
    background: var(--seal-vermillion);
    transition: width 280ms ease;
    order: 2;
}

.index-marginalia li:hover .label {
    opacity: 1;
    transform: translateX(0);
}

.index-marginalia li.active .numeral {
    color: var(--seal-vermillion);
    font-weight: 500;
}

.index-marginalia li.active .dash {
    width: 12px;
}

.index-marginalia li.active .label {
    opacity: 1;
    transform: translateX(0);
    color: var(--iron-ink);
}

/* ---------- Stratigraphic column wrapper ---------- */
.stratigraphic-column {
    position: relative;
    z-index: 2;
}

/* ---------- Masthead ---------- */
.masthead {
    min-height: 100vh;
    padding: clamp(60px, 9vh, 110px) var(--gutter) clamp(60px, 9vh, 110px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--tint-i);
    position: relative;
}

.masthead-inner {
    max-width: var(--max-w);
    width: 100%;
    margin: 0 auto;
    text-align: center;
    position: relative;
}

.masthead-meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-family: var(--ff-grotesk);
    font-size: 11px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--quill-gray);
    margin-bottom: clamp(28px, 5vh, 56px);
}

.masthead-meta .meta-line:first-child {
    color: var(--seal-vermillion);
}

.masthead-title {
    font-family: var(--ff-display);
    font-weight: 500;
    font-size: clamp(56px, 10vw, 132px);
    line-height: 0.92;
    letter-spacing: -0.025em;
    color: var(--iron-ink);
    margin: 0;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: clamp(8px, 1.5vw, 18px);
    flex-wrap: wrap;
}

.masthead-title .title-line {
    display: inline-block;
}

.masthead-title .title-line-1 {
    font-style: italic;
    font-weight: 400;
}

.masthead-title .title-line-2 {
    color: var(--diplomatic-navy);
}

.masthead-title .title-dot {
    color: var(--seal-vermillion);
    font-style: normal;
    font-weight: 500;
    font-size: 0.6em;
    line-height: 1;
    transform: translateY(-0.18em);
}

.masthead-subtitle {
    font-family: var(--ff-display);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(17px, 1.6vw, 22px);
    color: var(--iron-ink-soft);
    margin: 26px auto 0;
    max-width: 36em;
    line-height: 1.5;
}

.masthead-engraving {
    margin: clamp(40px, 6vh, 72px) auto 0;
    max-width: 320px;
    opacity: 0.55;
}

.masthead-engraving svg {
    width: 100%;
    height: auto;
}

.masthead-rule {
    width: 60%;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--iron-ink-soft) 25%, var(--iron-ink-soft) 75%, transparent);
    margin: clamp(40px, 5vh, 64px) auto 0;
    opacity: 0.4;
}

.masthead-prelude {
    max-width: 38em;
    margin: clamp(28px, 4vh, 48px) auto 0;
    text-align: left;
    position: relative;
    padding: 0 clamp(0px, 2vw, 24px);
}

.prelude-label {
    display: inline-block;
    font-family: var(--ff-grotesk);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.34em;
    color: var(--seal-vermillion);
    margin-bottom: 14px;
    text-transform: uppercase;
}

.prelude-text {
    font-family: var(--ff-body);
    font-size: 18px;
    line-height: 1.78;
    color: var(--iron-ink);
    margin: 0;
    text-align: justify;
    hyphens: auto;
}

.masthead-scrolldown {
    margin: clamp(50px, 7vh, 88px) auto 0;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    font-family: var(--ff-grotesk);
    font-size: 10px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--quill-gray);
}

.scrolldown-line {
    display: block;
    width: 1px;
    height: 56px;
    background: linear-gradient(to bottom, var(--iron-ink-soft), transparent);
    animation: scrollHint 2.4s ease-in-out infinite;
}

@keyframes scrollHint {
    0%, 100% { transform: scaleY(1); transform-origin: top; opacity: 0.5; }
    50%      { transform: scaleY(1.25); opacity: 0.9; }
}

/* ---------- Fault line ---------- */
.fault-line {
    position: relative;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: inherit;
}

.fault-line .fault-rule {
    display: block;
    width: 0%;
    height: 2px;
    background: var(--seal-vermillion);
    opacity: 0.6;
    transition: width 800ms cubic-bezier(0.22, 0.61, 0.36, 1);
    max-width: 60vw;
}

.fault-line.in-view .fault-rule {
    width: 60vw;
}

.fault-line-final {
    height: 110px;
}

.fault-line-final .fault-rule {
    background: linear-gradient(to right, transparent, var(--seal-vermillion), transparent);
    height: 1px;
    opacity: 0.7;
}

/* ---------- Stratum (5 layers, deepening warmth) ---------- */
.stratum {
    position: relative;
    min-height: 100vh;
    padding: clamp(80px, 11vh, 140px) var(--gutter);
    overflow: hidden;
    isolation: isolate;
}

.stratum-i   { background: var(--tint-i); }
.stratum-ii  { background: var(--tint-ii); }
.stratum-iii { background: var(--tint-iii); }
.stratum-iv  { background: var(--tint-iv); }
.stratum-v   { background: var(--tint-v); }

.stratum-body {
    position: relative;
    max-width: var(--max-w);
    margin: 0 auto;
    z-index: 2;
}

/* Watermark display word */
.watermark {
    position: absolute;
    top: 50%;
    font-family: var(--ff-watermark);
    font-weight: 300;
    font-size: clamp(120px, 20vw, 240px);
    color: var(--iron-ink);
    opacity: 0.085;
    letter-spacing: 0.04em;
    white-space: nowrap;
    pointer-events: none;
    z-index: 0;
    text-transform: uppercase;
    line-height: 1;
}

.watermark-left {
    left: -8vw;
    transform: translateY(-50%) rotate(-90deg);
    transform-origin: left center;
}

.watermark-right {
    right: -8vw;
    transform: translateY(-50%) rotate(90deg);
    transform-origin: right center;
}

/* Stratum header */
.stratum-header {
    margin-bottom: clamp(48px, 7vh, 88px);
    max-width: var(--max-w);
    position: relative;
}

.stratum-number {
    display: inline-block;
    font-family: var(--ff-grotesk);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--seal-vermillion);
    margin-right: 8px;
}

.stratum-depth {
    display: inline-block;
    font-family: var(--ff-grotesk);
    font-size: 11px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--quill-gray);
}

.stratum-title {
    font-family: var(--ff-display);
    font-weight: 500;
    font-size: clamp(40px, 5.6vw, 72px);
    line-height: 1.04;
    letter-spacing: -0.02em;
    color: var(--iron-ink);
    margin: 18px 0 0;
    max-width: 16ch;
}

.stratum-title em {
    font-style: italic;
    font-weight: 400;
    color: var(--iron-ink-soft);
}

.stratum-deck {
    font-family: var(--ff-display);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(17px, 1.5vw, 21px);
    color: var(--iron-ink-soft);
    line-height: 1.55;
    margin: 22px 0 0;
    max-width: 38em;
}

/* Stratum two-column layout */
.stratum-columns {
    display: grid;
    grid-template-columns: var(--col-primary) var(--col-gap) var(--col-margin);
    grid-column-gap: 0;
    align-items: start;
}

.column-primary {
    grid-column: 1 / 2;
    max-width: var(--reading-w);
}

.column-marginalia {
    grid-column: 3 / 4;
    border-left: 1px solid color-mix(in srgb, var(--gilt-edge) 50%, transparent);
    padding-left: clamp(18px, 2vw, 32px);
    position: relative;
}

.column-marginalia::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, transparent, color-mix(in srgb, var(--gilt-edge) 70%, transparent) 12%, color-mix(in srgb, var(--gilt-edge) 70%, transparent) 88%, transparent);
    pointer-events: none;
}

/* Body text */
.column-primary p {
    margin: 0 0 1.2em;
    text-align: justify;
    hyphens: auto;
    font-feature-settings: "kern" 1, "liga" 1, "onum" 1;
}

.column-primary p em {
    font-style: italic;
    color: var(--iron-ink-soft);
}

/* Drop cap */
.dropcap::first-letter {
    font-family: var(--ff-display);
    font-weight: 500;
    font-style: normal;
    font-size: 4.6em;
    line-height: 0.86;
    float: left;
    padding: 0.06em 0.12em 0 0;
    color: var(--seal-vermillion);
    margin-top: 0.05em;
    margin-right: 0.04em;
}

/* Footnote superscripts */
.footnote-mark {
    display: inline-block;
    font-family: var(--ff-grotesk);
    font-size: 0.62em;
    font-weight: 500;
    color: var(--seal-vermillion);
    cursor: pointer;
    margin-left: 0.08em;
    padding: 0 2px;
    border-radius: 2px;
    transition: background 180ms ease, color 180ms ease;
    position: relative;
    top: -0.45em;
    user-select: none;
}

.footnote-mark::before {
    content: "";
}

.footnote-mark:hover,
.footnote-mark.active {
    background: color-mix(in srgb, var(--seal-vermillion) 18%, transparent);
    color: var(--iron-ink);
}

/* Pullquote */
.pullquote {
    margin: 2.4em 0;
    padding: 0 0 0 28px;
    border-left: 2px solid var(--seal-vermillion);
    font-family: var(--ff-display);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(20px, 2vw, 26px);
    line-height: 1.42;
    color: var(--iron-ink);
    position: relative;
}

.pullquote .quote-mark {
    font-family: var(--ff-display);
    font-size: 2.4em;
    color: var(--seal-vermillion);
    line-height: 0;
    margin-right: 0.06em;
    position: relative;
    top: 0.4em;
}

.pullquote cite {
    display: block;
    font-family: var(--ff-grotesk);
    font-style: normal;
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--quill-gray);
    margin-top: 1em;
}

/* Marginalia cards (always visible static notes in column) */
.margin-card {
    background: var(--parchment-deep);
    border-left: 1px solid var(--gilt-edge);
    padding: 18px 22px 20px;
    margin-bottom: 22px;
    position: relative;
}

.margin-card .margin-numeral {
    display: block;
    font-family: var(--ff-display);
    font-style: italic;
    font-size: 13px;
    color: var(--seal-vermillion);
    margin-bottom: 4px;
}

.margin-card .margin-term {
    display: block;
    font-family: var(--ff-grotesk);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--iron-ink);
    margin-bottom: 8px;
}

.margin-card .margin-body {
    font-family: var(--ff-grotesk);
    font-size: 13px;
    line-height: 1.55;
    color: var(--iron-ink-soft);
    margin: 0;
}

.margin-card .margin-body em {
    font-style: italic;
    color: var(--iron-ink);
}

/* Marginalia engraving illustration block */
.margin-engraving {
    margin: 28px 0 12px;
    padding: 18px 0 0;
    border-top: 1px solid color-mix(in srgb, var(--gilt-edge) 40%, transparent);
    opacity: 0.78;
}

.margin-engraving svg {
    width: 100%;
    height: auto;
    max-width: 240px;
    margin: 0 auto;
}

/* SVG stroke draw — applied via JS sets dasharray/offset; CSS handles fallback */
.engraving-strokes path,
.engraving-strokes circle,
.engraving-strokes ellipse {
    transition: stroke-dashoffset 2400ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Floating marginalia card (footnote popup) ---------- */
.marginalia-floating {
    position: fixed;
    z-index: 60;
    background: var(--parchment-deep);
    border-left: 1px solid var(--gilt-edge);
    box-shadow: 0 12px 36px -16px rgba(42, 31, 20, 0.28),
                0 1px 0 rgba(196, 162, 101, 0.18) inset;
    padding: 18px 22px 20px;
    width: min(320px, 88vw);
    pointer-events: none;
    opacity: 0;
    filter: blur(4px);
    transform: translateY(8px);
    transition: opacity 380ms ease, filter 380ms ease, transform 380ms ease;
}

.marginalia-floating.visible {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
}

.marginalia-floating .mf-title {
    display: block;
    font-family: var(--ff-grotesk);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--seal-vermillion);
    margin-bottom: 8px;
}

.marginalia-floating .mf-body {
    font-family: var(--ff-grotesk);
    font-size: 13px;
    line-height: 1.6;
    color: var(--iron-ink);
    margin: 0;
}

.marginalia-floating .mf-body em {
    font-style: italic;
}

/* ---------- Colophon (closing element in stratum V) ---------- */
.colophon {
    margin-top: 3em;
    padding-top: 2em;
    text-align: center;
    position: relative;
}

.colophon-rule {
    display: block;
    width: 80px;
    height: 1px;
    background: var(--iron-ink-soft);
    margin: 0 auto 1.4em;
    opacity: 0.5;
}

.colophon-text {
    font-family: var(--ff-display);
    font-style: italic;
    font-size: 15px;
    color: var(--quill-gray);
    line-height: 1.65;
    max-width: 30em;
    margin: 0 auto 1.2em;
}

.colophon-mark {
    display: inline-block;
    font-family: var(--ff-grotesk);
    font-size: 11px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--seal-vermillion);
}

/* ---------- Folio footer ---------- */
.folio-footer {
    background: var(--tint-v);
    padding: 60px var(--gutter) 90px;
    border-top: 1px solid color-mix(in srgb, var(--iron-ink-soft) 18%, transparent);
}

.footer-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.footer-mark {
    font-family: var(--ff-display);
    font-style: italic;
    font-size: 22px;
    color: var(--iron-ink);
}

.footer-mark .dot {
    color: var(--seal-vermillion);
    font-style: normal;
}

.footer-line {
    font-family: var(--ff-grotesk);
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--iron-ink-soft);
}

.footer-mute {
    color: var(--quill-gray);
    letter-spacing: 0.24em;
}

/* ---------- Reveal animations (scroll-triggered) ---------- */
.reveal-target {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 800ms cubic-bezier(0.22, 0.61, 0.36, 1),
                transform 800ms cubic-bezier(0.22, 0.61, 0.36, 1);
    will-change: opacity, transform;
}

.reveal-target.is-revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Per-element delays inside a stratum */
.stratum .watermark.reveal-target {
    transition-duration: 1200ms;
    transition-delay: 0ms;
}

.stratum .watermark.is-revealed {
    /* fade in to its base opacity */
    opacity: 0.085;
}

.stratum .stratum-header.reveal-target          { transition-delay: 200ms; transition-duration: 700ms; }
.stratum .column-primary.reveal-target          { transition-delay: 400ms; transition-duration: 600ms; }
.stratum .column-marginalia.reveal-target       { transition-delay: 600ms; transition-duration: 600ms; }
.stratum .margin-engraving.reveal-target        { transition-delay: 300ms; transition-duration: 1100ms; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }

    .reveal-target,
    .reveal-target.is-revealed,
    .fault-line .fault-rule,
    .marginalia-floating,
    .scrolldown-line {
        transition: none !important;
        animation: none !important;
        transform: none !important;
        opacity: 1 !important;
        filter: none !important;
        width: 60vw !important;
    }

    .watermark { opacity: 0.085 !important; }
    .marginalia-floating { opacity: 0; filter: none; }
    .marginalia-floating.visible { opacity: 1; }

    .engraving-strokes path,
    .engraving-strokes circle,
    .engraving-strokes ellipse {
        stroke-dashoffset: 0 !important;
        transition: none !important;
    }
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
    :root {
        --col-primary: 46%;
        --col-margin: 38%;
        --col-gap: 16%;
    }
}

@media (max-width: 768px) {
    body { font-size: 17px; line-height: 1.7; }

    .index-marginalia {
        right: 14px;
    }
    .index-marginalia .label { display: none; }

    .stratum {
        padding: 80px var(--gutter);
    }

    .stratum-columns {
        display: block;
    }

    .column-primary {
        max-width: 100%;
    }

    .column-marginalia {
        grid-column: auto;
        border-left: 0;
        padding-left: 0;
        margin-top: 40px;
        padding-top: 30px;
        border-top: 1px solid color-mix(in srgb, var(--gilt-edge) 50%, transparent);
    }

    .column-marginalia::before { display: none; }

    .margin-card {
        margin-bottom: 18px;
    }

    .watermark {
        font-size: clamp(80px, 22vw, 140px);
    }

    .watermark-left {
        left: -10vw;
    }
    .watermark-right {
        right: -10vw;
    }

    .pullquote {
        font-size: 18px;
        padding-left: 18px;
    }

    .marginalia-floating {
        position: fixed;
        left: 50% !important;
        right: auto !important;
        bottom: 24px !important;
        top: auto !important;
        transform: translateX(-50%) translateY(8px);
        width: min(420px, 92vw);
    }

    .marginalia-floating.visible {
        transform: translateX(-50%) translateY(0);
    }
}

@media (max-width: 480px) {
    .masthead {
        padding: 80px 22px 60px;
    }

    .masthead-meta {
        font-size: 10px;
        letter-spacing: 0.26em;
    }

    .stratum-title {
        font-size: clamp(34px, 9vw, 48px);
        max-width: 100%;
    }

    .stratum-deck {
        font-size: 16px;
    }

    .dropcap::first-letter {
        font-size: 3.8em;
    }
}