/* archaic.studio — folio styles
   palette: oxblood #5a1a2b, sherry #7a2838, cream #f3ead7, vellum #e8dbb8, espresso #1d1214
*/

:root {
    --oxblood:  #5a1a2b;
    --sherry:   #7a2838;
    --cream:    #f3ead7;
    --vellum:   #e8dbb8;
    --espresso: #1d1214;

    --rail-w: 88px;
    --col-main: 58vw;
    --gutter-pad: 56px;

    --font-display: 'IBM Plex Mono', 'Courier New', monospace;
    --font-body:    'JetBrains Mono', 'IBM Plex Mono', monospace;
    --font-mega:    'Major Mono Display', 'IBM Plex Mono', monospace;
}

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

html, body {
    background: var(--cream);
    color: var(--espresso);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    cursor: none;
}

body {
    overflow-x: hidden;
}

/* paper grain on cream */
body::before {
    content: "";
    position: fixed; inset: 0;
    pointer-events: none;
    background-image:
        radial-gradient(circle at 23% 18%, rgba(29,18,20,0.025) 0 1px, transparent 2px),
        radial-gradient(circle at 71% 48%, rgba(29,18,20,0.020) 0 1px, transparent 2px),
        radial-gradient(circle at 41% 82%, rgba(29,18,20,0.022) 0 1px, transparent 2px);
    background-size: 7px 7px, 9px 9px, 11px 11px;
    z-index: 1;
    mix-blend-mode: multiply;
    opacity: 0.6;
}

/* CUSTOM CURSOR */
.cursor {
    position: fixed;
    top: 0; left: 0;
    width: 18px; height: 18px;
    border: 1.25px solid var(--oxblood);
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 9999;
    transition: width 220ms ease, height 220ms ease, background 220ms ease, border-color 220ms ease;
    mix-blend-mode: multiply;
}
.cursor::before, .cursor::after {
    content: "";
    position: absolute;
    background: var(--oxblood);
}
.cursor::before {
    top: 50%; left: -6px; right: -6px;
    height: 1.25px; transform: translateY(-50%);
}
.cursor::after {
    left: 50%; top: -6px; bottom: -6px;
    width: 1.25px; transform: translateX(-50%);
}
.cursor__dot {
    position: absolute; inset: 50%;
    width: 4px; height: 4px;
    background: var(--oxblood);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}
.cursor.is-hover {
    width: 26px; height: 26px;
    background: var(--cream);
    border-color: var(--oxblood);
    mix-blend-mode: normal;
}

/* MASTHEAD */
.masthead {
    position: fixed;
    top: 0; left: 0; right: 0;
    background: var(--cream);
    border-bottom: 1px solid rgba(29,18,20,0.18);
    z-index: 50;
    font-family: var(--font-display);
    font-size: 12px;
    letter-spacing: 0.02em;
}
.masthead__inner {
    padding: 14px 32px 14px calc(var(--rail-w) + 16px);
    display: flex;
    gap: 14px;
    align-items: baseline;
    flex-wrap: wrap;
    color: var(--espresso);
}
.masthead__mark { font-weight: 600; }
.masthead__sep { opacity: 0.4; }
.masthead__est { opacity: 0.7; font-style: italic; }
.masthead__viewing { margin-left: auto; }
.masthead__viewing span { color: var(--oxblood); font-weight: 600; }

/* LEFT RAIL */
.rail {
    position: fixed;
    top: 0; left: 0;
    width: var(--rail-w);
    height: 100vh;
    background: var(--cream);
    border-right: 1px solid rgba(29,18,20,0.18);
    padding: 80px 0 24px;
    z-index: 40;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.rail__numeral {
    font-family: var(--font-mega);
    font-size: 56px;
    color: var(--oxblood);
    line-height: 1;
    margin-bottom: 36px;
    transition: transform 600ms cubic-bezier(0.2, 1.4, 0.4, 1);
    will-change: transform;
}

.rail__index {
    list-style: none;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: lowercase;
    display: flex;
    flex-direction: column;
    gap: 18px;
    color: var(--espresso);
    opacity: 0.55;
}
.rail__index li {
    transition: color 280ms ease, opacity 280ms ease;
    cursor: none;
}
.rail__index li.is-active {
    color: var(--oxblood);
    opacity: 1;
    font-weight: 500;
}

.rail__foot {
    margin-top: auto;
    font-family: var(--font-display);
    font-size: 9px;
    color: var(--espresso);
    opacity: 0.5;
    text-align: center;
    line-height: 1.6;
    letter-spacing: 0.08em;
}

/* FOLIO MAIN */
.folio {
    margin-left: var(--rail-w);
    padding-top: 50px;
    position: relative;
    z-index: 5;
}

.spread {
    position: relative;
    min-height: 100vh;
    padding: 100px 60px 100px var(--gutter-pad);
    overflow: hidden;
}

.spread--cream {
    background: var(--cream);
    color: var(--espresso);
}

.spread--burgundy {
    background: var(--oxblood);
    color: var(--cream);
}
/* linen weave on burgundy */
.spread--burgundy::after {
    content: "";
    position: absolute; inset: 0;
    pointer-events: none;
    background-image:
        repeating-linear-gradient(45deg, rgba(243,234,215,0.012) 0 1px, transparent 1px 4px),
        repeating-linear-gradient(-45deg, rgba(243,234,215,0.012) 0 1px, transparent 1px 4px);
    z-index: 1;
}

.spread__gutter {
    position: absolute;
    top: 0; right: 0;
    width: 42%;
    height: 100%;
    pointer-events: none;
}

.spread__main {
    max-width: var(--col-main);
    position: relative;
    z-index: 2;
}

.spread__head {
    margin-bottom: 56px;
    padding-top: 12px;
    border-top: 1px solid rgba(29,18,20,0.25);
    padding-top: 20px;
    max-width: 760px;
}
.spread__head--inv {
    border-top-color: rgba(243,234,215,0.3);
}

.kicker {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: lowercase;
    color: var(--sherry);
    margin-bottom: 18px;
}
.kicker--inv {
    color: var(--vellum);
}

.spread-title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.6rem, 3.2vw, 2.6rem);
    letter-spacing: -0.01em;
    line-height: 1.18;
    color: var(--oxblood);
    max-width: 720px;
}
.spread-title--inv { color: var(--cream); }

/* MEGA NUMERALS */
.numeral-mega {
    position: absolute;
    top: 70px;
    right: 7%;
    font-family: var(--font-mega);
    font-size: clamp(72px, 9vw, 128px);
    color: var(--oxblood);
    opacity: 0.12;
    line-height: 1;
    pointer-events: none;
    z-index: 0;
    letter-spacing: -0.04em;
}
.numeral-mega--inv {
    color: var(--cream);
    opacity: 0.10;
}

/* HERO TITLE */
.hero-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(2.1rem, 4.6vw, 3.8rem);
    letter-spacing: -0.01em;
    line-height: 1.12;
    color: var(--oxblood);
    margin-top: 12px;
    margin-bottom: 32px;
    max-width: 920px;
}
.hero-title em {
    font-style: italic;
    color: var(--sherry);
    font-weight: 500;
}

.lede {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(15px, 1.2vw, 17px);
    line-height: 1.75;
    max-width: 640px;
    margin-bottom: 40px;
    color: var(--espresso);
}

.grid-meta {
    display: flex;
    gap: 12px;
    align-items: baseline;
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--sherry);
    margin-bottom: 22px;
    flex-wrap: wrap;
}
.grid-meta__sep { opacity: 0.5; }
#hoverCaption {
    color: var(--espresso);
    opacity: 0.7;
    font-style: italic;
    text-transform: none;
    letter-spacing: 0.04em;
}

/* INSTRUMENT GRID 7x4 */
.instrument-grid {
    display: grid;
    grid-template-columns: repeat(7, 110px);
    grid-template-rows: repeat(4, 110px);
    gap: 0;
    border-top: 1px solid rgba(29,18,20,0.25);
    border-left: 1px solid rgba(29,18,20,0.25);
    width: max-content;
    margin-bottom: 64px;
    max-width: 100%;
}
.cell {
    width: 110px; height: 110px;
    border-right: 1px solid rgba(29,18,20,0.25);
    border-bottom: 1px solid rgba(29,18,20,0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: background 280ms ease;
    cursor: none;
}
.cell svg {
    stroke: var(--espresso);
    fill: none;
    stroke-width: 1.25;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform 360ms cubic-bezier(0.2, 1.4, 0.4, 1), stroke 280ms ease;
}
.cell svg .filled {
    fill: var(--espresso);
    stroke: var(--espresso);
}
.cell:hover {
    background: var(--oxblood);
}
.cell:hover svg {
    stroke: var(--cream);
    transform: rotate(4deg);
}
.cell:hover svg .filled { fill: var(--cream); stroke: var(--cream); }
.cell--empty {
    background: var(--oxblood);
}
.cell--empty:hover { background: var(--sherry); }

/* SCROLL CUE */
.scroll-cue {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 24px;
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--sherry);
}
#scrollRocket {
    stroke: var(--oxblood);
    fill: none;
    stroke-width: 1.25;
    stroke-linecap: round;
    stroke-linejoin: round;
    animation: drift 4s ease-in-out infinite;
}
@keyframes drift {
    0%, 100% { transform: translateY(0); opacity: 0.7; }
    50%      { transform: translateY(14px); opacity: 1; }
}

/* RIBBONS */
.ribbons {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 1100px;
}

.ribbon {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 56px;
    padding: 32px 0;
    border-bottom: 1px solid rgba(29,18,20,0.18);
    align-items: start;
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 700ms ease, transform 700ms cubic-bezier(0.2, 0.9, 0.3, 1);
}
.ribbon.is-revealed {
    opacity: 1;
    transform: translateY(0);
}

.ribbon--up   .ribbon__plate { margin-top: -24px; }
.ribbon--down .ribbon__plate { margin-top:  44px; }

.ribbon__plate {
    width: 240px;
    height: 240px;
    border: 1px solid rgba(29,18,20,0.25);
    background: var(--vellum);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 380ms cubic-bezier(0.2, 1.4, 0.4, 1);
}
.ribbon__plate:hover { transform: rotate(2deg); }

.plate-svg {
    width: 200px;
    height: 200px;
    stroke: var(--espresso);
    fill: none;
    stroke-width: 1.25;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.plate-svg .filled {
    fill: var(--espresso);
    stroke: var(--espresso);
}
.plate-label {
    font-family: var(--font-display);
    font-size: 9px;
    letter-spacing: 0.18em;
    fill: var(--espresso);
    stroke: none;
    text-anchor: middle;
}

.ribbon__body {
    padding-top: 8px;
}
.ribbon--up   .ribbon__body { transform: translateY(0); }
.ribbon--down .ribbon__body { transform: translateY(40px); }

.ribbon__meta {
    display: flex;
    gap: 18px;
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.16em;
    color: var(--sherry);
    margin-bottom: 14px;
}
.ribbon__num { font-weight: 600; }
.ribbon__year { opacity: 0.7; }

.ribbon__title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.4rem, 2.2vw, 2rem);
    letter-spacing: -0.01em;
    line-height: 1.18;
    color: var(--oxblood);
    margin-bottom: 18px;
    max-width: 540px;
}

.ribbon__text {
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.75;
    color: var(--espresso);
    max-width: 520px;
}

.inline-icon {
    display: inline-block;
    vertical-align: -2px;
    margin: 0 3px;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 500ms ease, transform 500ms ease;
}
.inline-icon svg {
    stroke: var(--sherry);
    fill: none;
    stroke-width: 1.25;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.ribbon.is-revealed .inline-icon {
    opacity: 1;
    transform: translateY(0);
}

/* CORRESPONDENCE NOTEBOOK */
.notebook {
    columns: 2;
    column-gap: 64px;
    max-width: 1080px;
    margin-top: 24px;
    color: var(--cream);
    position: relative;
    z-index: 2;
}
.note {
    break-inside: avoid;
    padding: 18px 0 22px;
    border-bottom: 1px solid rgba(243,234,215,0.18);
    margin-bottom: 4px;
}
.note p {
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.7;
    color: var(--cream);
}
.note em {
    font-style: italic;
    color: var(--vellum);
}

.footnote {
    display: inline-block;
    font-family: var(--font-mega);
    font-size: 13px;
    margin-left: 4px;
    color: var(--vellum);
    cursor: none;
    transform-origin: center;
    will-change: transform;
    transition: color 220ms ease;
    vertical-align: super;
    line-height: 1;
}

/* TIMEPIECE */
.timepiece {
    position: relative;
    margin: 60px 0 32px;
    height: 300px;
    max-width: 1000px;
}
.timepiece__rule {
    position: absolute;
    top: 50%;
    left: 0; right: 0;
    height: 1.25px;
    background: var(--espresso);
}
.timepiece__rule::before,
.timepiece__rule::after {
    content: "";
    position: absolute;
    top: -4px;
    width: 1.25px;
    height: 9px;
    background: var(--espresso);
}
.timepiece__rule::before { left: 0; }
.timepiece__rule::after  { right: 0; }

.timepiece__markers {
    list-style: none;
    position: absolute;
    inset: 0;
}
.tp-marker {
    position: absolute;
    top: 50%;
    transform: translateX(-50%);
    text-align: center;
    width: 100px;
    font-family: var(--font-display);
}
.tp-marker__icon {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 28px; height: 28px;
    display: flex; align-items: center; justify-content: center;
    background: var(--cream);
    border: 1px solid rgba(29,18,20,0.25);
}
.tp-marker__icon svg {
    stroke: var(--espresso);
    fill: none;
    stroke-width: 1.25;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.tp-marker__icon svg .filled { fill: var(--espresso); stroke: var(--espresso); }
.tp-marker__icon--up   { top: -56px; }
.tp-marker__icon--down { top:  28px; }

.tp-marker__year {
    display: block;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--oxblood);
    font-weight: 600;
}
.tp-marker:has(.tp-marker__icon--up)   .tp-marker__year { top: -86px; }
.tp-marker:has(.tp-marker__icon--down) .tp-marker__year { top:  62px; }

.tp-marker__label {
    display: block;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    letter-spacing: 0.06em;
    color: var(--espresso);
    opacity: 0.7;
    font-style: italic;
    text-transform: lowercase;
    width: 120px;
    line-height: 1.3;
}
.tp-marker:has(.tp-marker__icon--up)   .tp-marker__label { top: -106px; }
.tp-marker:has(.tp-marker__icon--down) .tp-marker__label { top:  82px; }

.timepiece__caption {
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--espresso);
    opacity: 0.7;
    font-style: italic;
    max-width: 680px;
    margin-top: 24px;
}

/* COLOPHON SPREAD */
.spread--watermark { position: relative; }

.watermark {
    position: absolute;
    top: 50%; right: 6%;
    transform: translateY(-50%);
    pointer-events: none;
    opacity: 0.08;
    z-index: 0;
}
.watermark svg {
    stroke: var(--oxblood);
    fill: none;
    stroke-width: 1.25;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.watermark svg .filled { fill: var(--oxblood); stroke: var(--oxblood); }
.watermark .plate-label { fill: var(--oxblood); stroke: none; }

.colophon {
    position: relative;
    z-index: 2;
    max-width: 640px;
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 22px;
}
.colophon p {
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.78;
    color: var(--espresso);
}
.colophon em {
    font-style: italic;
    color: var(--sherry);
}

.pullquote {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: 500;
    font-size: clamp(1.2rem, 2vw, 1.6rem);
    line-height: 1.4;
    color: var(--oxblood);
    border-left: 2px solid var(--sherry);
    padding: 12px 0 12px 24px;
    margin: 14px 0 14px 80px;
    max-width: 520px;
}

/* SIGN-OFF */
.spread--signoff {
    min-height: 70vh;
    padding: 120px 60px 80px var(--gutter-pad);
}
.signoff {
    position: relative;
    z-index: 2;
    max-width: 760px;
    color: var(--cream);
    display: flex;
    flex-direction: column;
    gap: 30px;
}
.signoff__hourglass svg {
    stroke: var(--cream);
    fill: none;
    stroke-width: 1.25;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.signoff__hourglass svg .filled {
    fill: var(--cream);
    stroke: var(--cream);
}
.signoff__phrase {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.5rem, 2.6vw, 2.4rem);
    letter-spacing: -0.01em;
    color: var(--cream);
}
.signoff__colophon {
    font-family: var(--font-body);
    font-size: 13px;
    line-height: 1.7;
    color: var(--vellum);
    opacity: 0.85;
}
.signoff__colophon p { color: var(--vellum); }

.signoff__stamp {
    margin-top: 10px;
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.16em;
    color: var(--vellum);
    display: flex;
    gap: 10px;
    border-top: 1px solid rgba(243,234,215,0.3);
    padding-top: 16px;
    text-transform: lowercase;
}

/* MARGINALIA / MAGNETIC */
.marginalia {
    position: absolute;
    pointer-events: auto;
    color: var(--espresso);
    cursor: none;
    will-change: transform;
    transition: transform 600ms cubic-bezier(0.2, 1.4, 0.4, 1);
}
.marginalia svg {
    stroke: var(--sherry);
    fill: none;
    stroke-width: 1.25;
    stroke-linecap: round;
    stroke-linejoin: round;
    opacity: 0.6;
}

/* RESPONSIVE */
@media (max-width: 1100px) {
    :root { --col-main: 86vw; --gutter-pad: 36px; }
    .instrument-grid {
        grid-template-columns: repeat(7, 80px);
        grid-template-rows: repeat(4, 80px);
    }
    .cell { width: 80px; height: 80px; }
    .ribbon { grid-template-columns: 200px 1fr; gap: 32px; }
    .ribbon__plate { width: 180px; height: 180px; }
    .plate-svg { width: 150px; height: 150px; }
    .notebook { columns: 1; }
}

@media (max-width: 720px) {
    :root { --rail-w: 56px; }
    html, body { cursor: auto; }
    .cursor { display: none; }
    .rail__index { font-size: 9px; gap: 12px; }
    .rail__numeral { font-size: 36px; }
    .masthead__inner { font-size: 10px; padding-left: 64px; gap: 8px; }
    .spread { padding: 80px 24px 80px 16px; }
    .instrument-grid {
        grid-template-columns: repeat(4, 60px);
        grid-template-rows: repeat(7, 60px);
    }
    .cell { width: 60px; height: 60px; }
    .ribbon { grid-template-columns: 1fr; }
    .ribbon__plate { width: 160px; height: 160px; margin: 0 0 16px !important; }
    .ribbon--down .ribbon__body { transform: none; }
    .timepiece { height: 220px; }
    .pullquote { margin-left: 0; }
    .numeral-mega { font-size: 64px; right: 4%; top: 50px; }
}