/* =====================================================
   nfth.ing — Cinematic Archive of the Unfinished
   Duotone: indigo-slate + parchment cream
   ===================================================== */

:root {
    --c-ink-deep: #0F1923;
    --c-indigo: #1B2638;
    --c-indigo-soft: #2D3A4A;
    --c-mist: #6B7B8D;
    --c-stone: #A89F8F;
    --c-gold: #C8B99A;
    --c-foxing: #D4C9B5;
    --c-parchment: #E8DFD0;
    --c-paper-light: #F0E6D2;
    --c-bleached: #F5F0E8;
    --c-darkdust: #5A4E3C;

    --font-serif: "Libre Baskerville", Georgia, serif;
    --font-sans: "Source Sans 3", "Inter", system-ui, sans-serif;
    --font-mono: "Inconsolata", "Space Mono", "SF Mono", monospace;

    --sidebar-w: 280px;
    --frame-pad-y: 80px;
    --frame-pad-x: 60px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--c-parchment);
    color: var(--c-indigo-soft);
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.75;
    overflow-x: hidden;
    cursor: crosshair;
    min-height: 100vh;
    position: relative;
}

/* =========================================================
   Paper texture layers — fixed, full viewport
   ========================================================= */

.paper-grain {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    opacity: 0.35;
    background-image:
        url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240' viewBox='0 0 240 240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.35 0 0 0 0 0.31 0 0 0 0 0.24 0 0 0 0.55 0'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.08'/></svg>");
    mix-blend-mode: multiply;
}

.paper-foxing {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    background-image:
        radial-gradient(circle at 8% 12%, rgba(212, 201, 181, 0.18) 0, transparent 38px),
        radial-gradient(circle at 22% 4%, rgba(212, 201, 181, 0.10) 0, transparent 60px),
        radial-gradient(circle at 35% 18%, rgba(168, 159, 143, 0.14) 0, transparent 48px),
        radial-gradient(circle at 48% 9%, rgba(212, 201, 181, 0.08) 0, transparent 70px),
        radial-gradient(circle at 62% 22%, rgba(212, 201, 181, 0.16) 0, transparent 42px),
        radial-gradient(circle at 78% 6%, rgba(168, 159, 143, 0.10) 0, transparent 55px),
        radial-gradient(circle at 92% 14%, rgba(212, 201, 181, 0.14) 0, transparent 36px),
        radial-gradient(circle at 6% 32%, rgba(168, 159, 143, 0.10) 0, transparent 60px),
        radial-gradient(circle at 28% 38%, rgba(212, 201, 181, 0.12) 0, transparent 50px),
        radial-gradient(circle at 54% 44%, rgba(212, 201, 181, 0.16) 0, transparent 30px),
        radial-gradient(circle at 72% 36%, rgba(168, 159, 143, 0.12) 0, transparent 45px),
        radial-gradient(circle at 88% 42%, rgba(212, 201, 181, 0.14) 0, transparent 60px),
        radial-gradient(circle at 14% 56%, rgba(212, 201, 181, 0.10) 0, transparent 50px),
        radial-gradient(circle at 36% 62%, rgba(168, 159, 143, 0.16) 0, transparent 40px),
        radial-gradient(circle at 58% 70%, rgba(212, 201, 181, 0.12) 0, transparent 55px),
        radial-gradient(circle at 78% 64%, rgba(212, 201, 181, 0.18) 0, transparent 36px),
        radial-gradient(circle at 94% 76%, rgba(168, 159, 143, 0.10) 0, transparent 50px),
        radial-gradient(circle at 18% 82%, rgba(212, 201, 181, 0.14) 0, transparent 60px),
        radial-gradient(circle at 42% 88%, rgba(212, 201, 181, 0.10) 0, transparent 45px),
        radial-gradient(circle at 66% 92%, rgba(168, 159, 143, 0.12) 0, transparent 40px),
        radial-gradient(circle at 84% 96%, rgba(212, 201, 181, 0.16) 0, transparent 55px);
    mix-blend-mode: multiply;
    opacity: 1;
    transition: opacity 1200ms ease-out;
}

.paper-foxing.intensify { opacity: 1.6; filter: contrast(1.15); }

.paper-vignette {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 3;
    background: radial-gradient(ellipse at center,
        transparent 30%,
        rgba(212, 201, 181, 0.06) 60%,
        rgba(90, 78, 60, 0.18) 100%);
}

.paper-folds {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    background-image:
        linear-gradient(to right, transparent 0, transparent calc(33% - 0.5px), rgba(200, 185, 154, 0.10) 33%, transparent calc(33% + 0.5px)),
        linear-gradient(to right, transparent 0, transparent calc(50% - 0.5px), rgba(200, 185, 154, 0.08) 50%, transparent calc(50% + 0.5px)),
        linear-gradient(to right, transparent 0, transparent calc(66% - 0.5px), rgba(200, 185, 154, 0.10) 66%, transparent calc(66% + 0.5px)),
        linear-gradient(to bottom, transparent 0, transparent calc(50% - 0.5px), rgba(200, 185, 154, 0.06) 50%, transparent calc(50% + 0.5px));
}

.scan-lines {
    position: fixed;
    inset: -10vh 0;
    pointer-events: none;
    z-index: 4;
    background-image: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent 2px,
        rgba(27, 38, 56, 0.035) 2px,
        rgba(27, 38, 56, 0.035) 3px
    );
    animation: scanShift 60s linear infinite;
    will-change: transform;
}

@keyframes scanShift {
    0%   { transform: translateY(0); }
    100% { transform: translateY(-12vh); }
}

/* =========================================================
   Sidebar — the film strip
   ========================================================= */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-w);
    height: 100vh;
    background-color: var(--c-indigo);
    background-image:
        radial-gradient(ellipse at 50% 0%, rgba(15, 25, 35, 0.4) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 100%, rgba(15, 25, 35, 0.5) 0%, transparent 50%);
    z-index: 50;
    display: flex;
    flex-direction: column;
    padding: 32px 24px 32px 32px;
    border-right: 1px solid rgba(200, 185, 154, 0.12);
    overflow: hidden;
}

.sidebar::before {
    /* faint scan lines on sidebar interior */
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent 2px,
        rgba(200, 185, 154, 0.025) 2px,
        rgba(200, 185, 154, 0.025) 3px
    );
}

.sidebar-title {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.36em;
    color: var(--c-gold);
    text-transform: uppercase;
    position: absolute;
    top: 32px;
    left: 12px;
    height: auto;
    opacity: 0.85;
}

.film-strip {
    margin-top: 20px;
    margin-left: 18px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex-grow: 0;
    z-index: 2;
    position: relative;
}

.thumbnail {
    width: 56px;
    height: 56px;
    background-color: var(--c-ink-deep);
    border: 1px solid rgba(200, 185, 154, 0.30);
    border-radius: 4px;
    cursor: crosshair;
    position: relative;
    padding: 6px;
    transition: box-shadow 600ms ease-out, border-color 600ms ease-out, transform 600ms ease-out;
    color: var(--c-gold);
    font-family: var(--font-mono);
    font-size: 0.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.thumbnail svg {
    width: 100%;
    height: 100%;
    display: block;
}

.thumb-label {
    position: absolute;
    bottom: 3px;
    right: 5px;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--c-gold);
    opacity: 0.55;
    letter-spacing: 0.08em;
}

.thumbnail:hover {
    border-color: rgba(200, 185, 154, 0.65);
    box-shadow: 0 0 14px 2px rgba(200, 185, 154, 0.25);
    transform: translateY(-1px);
}

.thumbnail.active {
    border-color: rgba(240, 230, 210, 0.7);
    animation: pulseGlow 4s ease-in-out infinite;
}

.thumbnail.active::after {
    content: "";
    position: absolute;
    left: -8px;
    top: 50%;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--c-paper-light);
    transform: translateY(-50%);
    box-shadow: 0 0 6px 1px var(--c-paper-light);
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 8px 1px rgba(200, 185, 154, 0.20); }
    50%      { box-shadow: 0 0 18px 3px rgba(240, 230, 210, 0.45); }
}

.sidebar-meta {
    margin-top: auto;
    margin-left: 18px;
    margin-bottom: 24px;
    z-index: 2;
    position: relative;
}

.meta-line {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--c-gold);
    opacity: 0.55;
    letter-spacing: 0.12em;
    line-height: 1.8;
    text-transform: uppercase;
}

.progress-track {
    position: absolute;
    right: 14px;
    top: 32px;
    bottom: 32px;
    width: 2px;
    background-color: rgba(200, 185, 154, 0.10);
    z-index: 2;
}

.progress-fill {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0%;
    background: linear-gradient(to bottom, var(--c-gold), var(--c-paper-light));
    box-shadow: 0 0 6px 1px rgba(240, 230, 210, 0.4);
    transition: height 80ms linear;
}

/* =========================================================
   Torn paper edge between sidebar and main
   ========================================================= */

.torn-edge {
    position: fixed;
    top: 0;
    left: var(--sidebar-w);
    width: 8px;
    height: 100vh;
    z-index: 49;
    pointer-events: none;
    transform: translateX(-100%);
    filter: drop-shadow(2px 0 3px rgba(15, 25, 35, 0.20));
}

/* =========================================================
   Main content — projection surface
   ========================================================= */

.main-content {
    margin-left: var(--sidebar-w);
    position: relative;
    z-index: 5;
    scroll-snap-type: y proximity;
    min-height: 100vh;
}

.frame {
    position: relative;
    min-height: 90vh;
    padding: var(--frame-pad-y) var(--frame-pad-x);
    scroll-snap-align: start;
    scroll-snap-stop: normal;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
    border-top: 1px solid rgba(27, 38, 56, 0.18);
}

.frame:first-of-type {
    border-top: none;
}

/* Corner brackets — film registration marks */

.corner-bracket {
    position: absolute;
    width: 16px;
    height: 16px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 600ms ease, width 400ms ease, height 400ms ease;
}

.frame.in-view .corner-bracket {
    opacity: 0.32;
    transition-delay: 200ms;
}

.frame:hover .corner-bracket {
    width: 24px;
    height: 24px;
}

.bracket-tl {
    top: 32px;
    left: 32px;
    border-top: 1px solid var(--c-indigo);
    border-left: 1px solid var(--c-indigo);
}
.bracket-tr {
    top: 32px;
    right: 32px;
    border-top: 1px solid var(--c-indigo);
    border-right: 1px solid var(--c-indigo);
}
.bracket-bl {
    bottom: 32px;
    left: 32px;
    border-bottom: 1px solid var(--c-indigo);
    border-left: 1px solid var(--c-indigo);
}
.bracket-br {
    bottom: 32px;
    right: 32px;
    border-bottom: 1px solid var(--c-indigo);
    border-right: 1px solid var(--c-indigo);
}

/* Frame coordinate label */

.frame-coordinate {
    position: absolute;
    top: 36px;
    right: 60px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--c-mist);
    letter-spacing: 0.18em;
    opacity: 0;
    transition: opacity 400ms ease;
    text-transform: uppercase;
}

.frame.in-view .frame-coordinate {
    opacity: 0.85;
    transition-delay: 500ms;
}

/* Targeting reticle */

.reticle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120px;
    height: 120px;
    border: 1px solid rgba(200, 185, 154, 0.4);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(1.5);
    opacity: 0;
    pointer-events: none;
    transition: transform 1800ms ease-out, opacity 1800ms ease-out;
}

.reticle::before, .reticle::after {
    content: "";
    position: absolute;
    background-color: rgba(200, 185, 154, 0.5);
}

.reticle::before {
    top: 50%;
    left: -8px;
    width: calc(100% + 16px);
    height: 1px;
    transform: translateY(-50%);
}

.reticle::after {
    left: 50%;
    top: -8px;
    width: 1px;
    height: calc(100% + 16px);
    transform: translateX(-50%);
}

.frame.in-view .reticle {
    opacity: 0.4;
    transform: translate(-50%, -50%) scale(0.5);
    transition-delay: 800ms;
}

.frame.in-view.reticle-fade .reticle {
    opacity: 0;
}

/* Timestamp watermark */

.timestamp-watermark {
    position: absolute;
    top: 50%;
    right: -2vw;
    transform: translateY(-50%) rotate(-5deg);
    font-family: var(--font-mono);
    font-size: clamp(4rem, 10vw, 9rem);
    color: var(--c-gold);
    opacity: 0.06;
    letter-spacing: 0.04em;
    pointer-events: none;
    user-select: none;
    white-space: nowrap;
    z-index: 0;
}

#frame-02 .timestamp-watermark { right: -3vw; top: 65%; }
#frame-03 .timestamp-watermark { left: -3vw; right: auto; top: 30%; transform: translateY(-50%) rotate(4deg); }
#frame-04 .timestamp-watermark { right: 5vw; top: 22%; transform: rotate(-3deg); }
#frame-05 .timestamp-watermark { left: 8vw; right: auto; top: 75%; transform: rotate(-6deg); }
#frame-06 .timestamp-watermark { right: auto; left: 50%; top: 50%; transform: translate(-50%, -50%) rotate(-4deg); }

/* Data trace SVG decoration */

.data-trace {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.data-trace path {
    stroke-dasharray: 1200;
    stroke-dashoffset: 1200;
    transition: stroke-dashoffset 4000ms ease-out;
}

.frame.in-view .data-trace path {
    stroke-dashoffset: 0;
    transition-delay: 1000ms;
}

/* =========================================================
   Frame content typography & reveal
   ========================================================= */

.frame-content {
    position: relative;
    z-index: 5;
    max-width: 760px;
    margin: 0 auto;
    width: 100%;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1000ms ease, transform 1000ms ease;
    transition-delay: 1300ms;
}

.frame-content-centered {
    text-align: center;
}

.frame.in-view .frame-content {
    opacity: 1;
    transform: translateY(0);
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.28em;
    color: var(--c-darkdust);
    text-transform: uppercase;
    margin-bottom: 28px;
    position: relative;
    padding-left: 24px;
}

.eyebrow::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 14px;
    height: 1px;
    background-color: var(--c-stone);
}

.frame-content-centered .eyebrow {
    padding-left: 0;
    display: inline-block;
    padding: 0 24px;
}

.frame-content-centered .eyebrow::before,
.frame-content-centered .eyebrow::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 14px;
    height: 1px;
    background-color: var(--c-stone);
}

.frame-content-centered .eyebrow::before { left: 0; }
.frame-content-centered .eyebrow::after { right: 0; }

.hero-title {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(3.5rem, 8vw, 6.5rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--c-indigo);
    margin-bottom: 28px;
}

.frame-title {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.18;
    letter-spacing: -0.02em;
    color: var(--c-indigo);
    margin-bottom: 36px;
    max-width: 620px;
}

/* Stagger character animation */
[data-stagger] .char {
    display: inline-block;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 600ms ease, transform 600ms ease;
}

[data-stagger] .char.space {
    width: 0.28em;
}

.frame.in-view [data-stagger] .char {
    opacity: 1;
    transform: translateY(0);
}

.hero-subtitle {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(1.05rem, 1.6vw, 1.4rem);
    line-height: 1.6;
    color: var(--c-indigo-soft);
    max-width: 560px;
    margin-bottom: 40px;
}

.hero-meta {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-darkdust);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
}

.meta-block {
    display: inline-block;
    padding: 6px 12px;
    border: 1px solid rgba(90, 78, 60, 0.25);
    background-color: rgba(245, 240, 232, 0.5);
}

.meta-divider {
    color: var(--c-stone);
    opacity: 0.6;
}

/* Body text */

.lede {
    font-family: var(--font-serif);
    font-weight: 400;
    font-style: italic;
    font-size: 1.3rem;
    line-height: 1.6;
    color: var(--c-indigo-soft);
    margin-bottom: 32px;
    max-width: 640px;
}

.body-text {
    font-family: var(--font-sans);
    font-weight: 300;
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--c-indigo-soft);
    margin-bottom: 22px;
    max-width: 640px;
}

.pull-quote {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
    font-size: 1.5rem;
    line-height: 1.6;
    color: var(--c-indigo);
    margin: 36px 0 36px 40px;
    padding-left: 28px;
    border-left: 1px solid rgba(27, 38, 56, 0.25);
    max-width: 640px;
    position: relative;
}

.pull-quote::before {
    content: "\201C";
    position: absolute;
    left: -8px;
    top: -16px;
    font-size: 3rem;
    color: var(--c-gold);
    line-height: 1;
    font-family: var(--font-serif);
    opacity: 0.6;
}

/* =========================================================
   Frame 03 — Index of fragments
   ========================================================= */

.fragment-list {
    list-style: none;
    margin-top: 8px;
}

.fragment {
    display: grid;
    grid-template-columns: 60px 1fr 240px 80px;
    gap: 24px;
    padding: 22px 0;
    border-bottom: 1px dashed rgba(27, 38, 56, 0.2);
    align-items: baseline;
    transition: background-color 400ms ease, padding-left 400ms ease;
    position: relative;
}

.fragment::before {
    content: "";
    position: absolute;
    left: -10px;
    top: 50%;
    width: 0;
    height: 1px;
    background: var(--c-gold);
    transition: width 500ms ease;
}

.fragment:hover::before { width: 8px; }

.fragment:hover {
    background-color: rgba(245, 240, 232, 0.45);
    padding-left: 12px;
}

.fragment-id {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--c-stone);
    letter-spacing: 0.12em;
    font-weight: 500;
}

.fragment-title {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.15rem;
    color: var(--c-indigo);
    line-height: 1.4;
}

.fragment-meta {
    font-family: var(--font-sans);
    font-weight: 300;
    font-size: 0.85rem;
    color: var(--c-darkdust);
    letter-spacing: 0.02em;
}

.fragment-state {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--c-gold);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    text-align: right;
    padding: 4px 10px;
    border: 1px solid rgba(200, 185, 154, 0.5);
    background-color: rgba(27, 38, 56, 0.04);
    justify-self: end;
}

/* =========================================================
   Frame 04 — Method cards
   ========================================================= */

.method-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 36px 48px;
    margin-top: 12px;
}

.method-card {
    position: relative;
    padding: 28px 28px 28px 28px;
    background-color: rgba(245, 240, 232, 0.55);
    border: 1px solid rgba(27, 38, 56, 0.12);
    border-radius: 2px;
    transition: border-color 600ms ease, background-color 600ms ease;
}

.method-card::before, .method-card::after {
    content: "";
    position: absolute;
    width: 10px;
    height: 10px;
    border-color: rgba(27, 38, 56, 0.4);
}

.method-card::before {
    top: -1px;
    left: -1px;
    border-top: 1px solid;
    border-left: 1px solid;
}

.method-card::after {
    bottom: -1px;
    right: -1px;
    border-bottom: 1px solid;
    border-right: 1px solid;
}

.method-card:hover {
    border-color: rgba(200, 185, 154, 0.6);
    background-color: rgba(240, 230, 210, 0.35);
}

.method-num {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--c-gold);
    letter-spacing: 0.12em;
    margin-bottom: 12px;
    color: var(--c-darkdust);
}

.method-heading {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: 1.5rem;
    color: var(--c-indigo);
    margin-bottom: 14px;
    letter-spacing: -0.01em;
}

.method-body {
    font-family: var(--font-sans);
    font-weight: 300;
    font-size: 0.98rem;
    line-height: 1.7;
    color: var(--c-indigo-soft);
}

/* =========================================================
   Frame 05 — Schedule
   ========================================================= */

.schedule {
    margin: 28px 0 36px 0;
    max-width: 640px;
}

.schedule-row {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 18px;
    padding: 14px 0;
    border-bottom: 1px dashed rgba(27, 38, 56, 0.18);
    font-family: var(--font-mono);
    font-size: 0.92rem;
    color: var(--c-indigo-soft);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.schedule-day {
    color: var(--c-indigo);
    font-weight: 500;
    text-align: left;
}

.schedule-time {
    color: var(--c-darkdust);
    text-align: right;
}

.schedule-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background-color: var(--c-gold);
    box-shadow: 0 0 4px 1px rgba(200, 185, 154, 0.5);
    justify-self: center;
}

/* =========================================================
   Frame 06 — Closing
   ========================================================= */

.frame-final {
    min-height: 100vh;
    text-align: center;
}

.frame-final .frame-content {
    text-align: center;
    max-width: 640px;
}

.signoff {
    margin: 40px 0 28px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 22px;
    font-family: var(--font-mono);
    color: var(--c-darkdust);
    letter-spacing: 0.32em;
    text-transform: uppercase;
    font-size: 0.78rem;
}

.signoff-glyph {
    color: var(--c-gold);
    font-size: 1.4rem;
}

.contact-line {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--c-indigo);
    letter-spacing: 0.16em;
    margin-bottom: 28px;
}

.colophon {
    font-family: var(--font-sans);
    font-style: italic;
    font-weight: 300;
    font-size: 0.82rem;
    color: var(--c-stone);
    letter-spacing: 0.05em;
    line-height: 1.7;
    max-width: 480px;
    margin: 0 auto;
}

/* =========================================================
   Frame divider
   ========================================================= */

.frame-divider {
    height: 20vh;
    position: relative;
    background:
        linear-gradient(to right,
            transparent 0%,
            rgba(27, 38, 56, 0.10) 20%,
            rgba(27, 38, 56, 0.10) 80%,
            transparent 100%);
    background-size: 8px 1px;
    background-repeat: repeat-x;
    background-position: center;
}

.frame-divider::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background-image: linear-gradient(to right,
        transparent, transparent 6px,
        rgba(27, 38, 56, 0.18) 6px, rgba(27, 38, 56, 0.18) 12px);
    background-size: 12px 1px;
}

.frame-divider::after {
    content: "//";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--c-parchment);
    padding: 0 16px;
    font-family: var(--font-mono);
    color: var(--c-stone);
    font-size: 0.75rem;
    letter-spacing: 0.4em;
    opacity: 0.6;
}

/* =========================================================
   Hover states for links
   ========================================================= */

a {
    color: var(--c-indigo);
    text-decoration: none;
    background-image: linear-gradient(to right, var(--c-gold), var(--c-gold));
    background-size: 0 1px;
    background-repeat: no-repeat;
    background-position: 0 100%;
    transition: background-size 500ms ease;
    padding-bottom: 2px;
}

a:hover {
    background-size: 100% 1px;
}

/* =========================================================
   Responsive — mobile sidebar collapse
   ========================================================= */

@media (max-width: 900px) {
    :root {
        --sidebar-w: 100%;
        --frame-pad-x: 28px;
        --frame-pad-y: 60px;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: 64px;
        flex-direction: row;
        align-items: center;
        padding: 8px 14px 8px 100px;
        border-right: none;
        border-bottom: 1px solid rgba(200, 185, 154, 0.18);
        overflow: hidden;
    }

    .sidebar-title {
        writing-mode: horizontal-tb;
        transform: none;
        position: absolute;
        top: 50%;
        left: 14px;
        transform: translateY(-50%);
        font-size: 0.85rem;
        letter-spacing: 0.28em;
    }

    .film-strip {
        flex-direction: row;
        gap: 8px;
        margin: 0;
        overflow-x: auto;
        flex: 1;
    }

    .thumbnail {
        width: 44px;
        height: 44px;
        flex-shrink: 0;
    }

    .sidebar-meta { display: none; }

    .progress-track {
        position: absolute;
        top: auto;
        bottom: -2px;
        left: 0;
        right: 0;
        width: 100%;
        height: 2px;
    }

    .progress-fill {
        width: 0%;
        height: 100%;
        background: linear-gradient(to right, var(--c-gold), var(--c-paper-light));
    }

    .torn-edge {
        display: none;
    }

    .main-content {
        margin-left: 0;
        margin-top: 64px;
    }

    .frame-coordinate {
        right: 28px;
        top: 28px;
        font-size: 0.62rem;
    }

    .corner-bracket { width: 12px; height: 12px; }
    .bracket-tl, .bracket-tr { top: 18px; }
    .bracket-bl, .bracket-br { bottom: 18px; }
    .bracket-tl, .bracket-bl { left: 18px; }
    .bracket-tr, .bracket-br { right: 18px; }

    .method-grid {
        grid-template-columns: 1fr;
    }

    .fragment {
        grid-template-columns: 1fr;
        gap: 6px;
        padding: 18px 0;
    }

    .fragment-state {
        justify-self: start;
    }

    .schedule-row {
        font-size: 0.78rem;
        gap: 10px;
    }

    .pull-quote {
        margin-left: 16px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: clamp(2.5rem, 12vw, 4rem);
    }

    .frame-title {
        font-size: clamp(1.75rem, 7vw, 2.5rem);
    }
}

/* =========================================================
   Reduced motion fallback
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001s !important;
        transition-duration: 0.001s !important;
    }

    .frame-content {
        opacity: 1;
        transform: none;
    }

    [data-stagger] .char {
        opacity: 1;
        transform: none;
    }
}