/* =========================================================
   simulai.org — Digital shoji screen burning from within
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
    --c-sumi:        #0F0F0F;   /* Sumi Ink */
    --c-washi:       #F2EDE4;   /* Washi Paper */
    --c-persimmon:   #C85A2A;   /* Burnt Persimmon */
    --c-ember:       #D4952B;   /* Ember Gold */
    --c-ash:         #E8E2D8;   /* Ash White */
    --c-carbon:      #1A1714;   /* Carbon Black */
    --c-signal:      #E03C28;   /* Signal Red */
    --c-phantom:     #28B8D4;   /* Phantom Cyan */
    --c-twilight:    #2A2218;   /* Section transition middle */

    --f-display:     "Josefin Sans", "Inter", "Space Grotesk", system-ui, sans-serif;
    --f-body:        "DM Sans", "Inter", system-ui, sans-serif;
    --f-mono:        "IBM Plex Mono", "JetBrains Mono", ui-monospace, monospace;

    --ease-soft:     cubic-bezier(0.16, 1, 0.3, 1);
    --ease-flame:    cubic-bezier(0.4, 0.0, 0.6, 1.0);

    --engawa-h:      48px;
    --gutter:        32px;
    --col:           calc((100vw - 13 * var(--gutter)) / 12);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
    background: var(--c-sumi);
    scroll-behavior: smooth;
    scroll-snap-type: y proximity;
}
body {
    font-family: var(--f-body);
    color: var(--c-ash);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
.svg-defs { position: absolute; width: 0; height: 0; }

/* =========================================================
   Engawa — top navigation strip
   ========================================================= */
.engawa {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--engawa-h);
    z-index: 90;
    background: rgba(15, 15, 15, 0.32);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    backdrop-filter: blur(12px) saturate(140%);
    border-bottom: 1px solid rgba(232, 226, 216, 0.08);
    color: var(--c-ash);
    transition: background 800ms var(--ease-soft), color 800ms var(--ease-soft), border-color 800ms var(--ease-soft);
}
.engawa.is-light {
    background: rgba(242, 237, 228, 0.5);
    color: var(--c-carbon);
    border-bottom-color: rgba(26, 23, 20, 0.08);
}
.engawa-inner {
    height: 100%;
    padding: 0 var(--gutter);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 24px;
}
.engawa-mark {
    font-family: var(--f-mono);
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}
.engawa-mark .dot { color: var(--c-persimmon); }
.engawa-meta {
    font-family: var(--f-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    text-align: center;
    opacity: 0.6;
}
.engawa-nav {
    justify-self: end;
    width: 32px;
    height: 22px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: transparent;
    border: 0;
    padding: 4px 0;
    cursor: pointer;
}
.engawa-nav .scan-line {
    display: block;
    width: 100%;
    height: 1px;
    background: currentColor;
    transform-origin: left center;
    animation: navGlitch 7s var(--ease-flame) infinite;
}
.engawa-nav .scan-line:nth-child(2) { animation-delay: -2.4s; width: 80%; }
.engawa-nav .scan-line:nth-child(3) { animation-delay: -4.6s; width: 65%; }

@keyframes navGlitch {
    0%, 92%, 100% { transform: translateX(0) scaleX(1); opacity: 1; }
    93% { transform: translateX(2px) scaleX(0.94); opacity: 0.6; }
    95% { transform: translateX(-3px) scaleX(1.06); opacity: 1; }
    97% { transform: translateX(1px) scaleX(0.98); opacity: 0.85; }
}

/* =========================================================
   Persistent shoji-lattice background
   ========================================================= */
.shoji-lattice {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}
.lattice-grid {
    position: absolute;
    inset: -10%;
    background-image:
        linear-gradient(to right, rgba(232,226,216,0.06) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(232,226,216,0.06) 1px, transparent 1px);
    background-size: 11vw 14vh;
    transform: rotate(0.5deg);
    mix-blend-mode: screen;
    transition: background-image 800ms var(--ease-soft);
}
.lattice-grid--alt {
    background-size: 22vw 28vh;
    transform: rotate(-0.7deg);
    opacity: 0.6;
}
body.in-light .lattice-grid {
    background-image:
        linear-gradient(to right, rgba(0,0,0,0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0,0,0,0.04) 1px, transparent 1px);
    mix-blend-mode: multiply;
}

/* =========================================================
   Procession & Chambers
   ========================================================= */
.procession {
    position: relative;
    z-index: 2;
}

.chamber {
    position: relative;
    height: 100vh;
    min-height: 720px;
    width: 100%;
    overflow: hidden;
    scroll-snap-align: start;
    isolation: isolate;
}
.chamber--dark {
    background: var(--c-sumi);
    color: var(--c-ash);
}
.chamber--light {
    background: var(--c-washi);
    color: var(--c-carbon);
}

/* Subtle paper/ink noise via pseudo */
.chamber::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' seed='5'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
    background-size: 240px 240px;
    opacity: 0.04;
    mix-blend-mode: overlay;
    pointer-events: none;
    z-index: 0;
}
.chamber--light::before { opacity: 0.05; mix-blend-mode: multiply; }

/* Background layer — gradient drift */
.chamber-bg {
    position: absolute;
    inset: -10%;
    z-index: 1;
    pointer-events: none;
    will-change: transform;
}
.chamber--dark .chamber-bg {
    background:
        radial-gradient(ellipse at 30% 20%, rgba(200, 90, 42, 0.08) 0%, transparent 55%),
        radial-gradient(ellipse at 75% 90%, rgba(40, 184, 212, 0.04) 0%, transparent 55%);
}
.chamber--light .chamber-bg {
    background:
        radial-gradient(ellipse at 70% 30%, rgba(212, 149, 43, 0.10) 0%, transparent 60%),
        radial-gradient(ellipse at 20% 80%, rgba(200, 90, 42, 0.05) 0%, transparent 55%);
}

/* Soft frame on first chamber for ceremonial feel */
.chamber-frame {
    position: absolute;
    inset: 8vh 6vw;
    z-index: 6;
    pointer-events: none;
}
.frame-corner {
    position: absolute;
    width: 22px;
    height: 22px;
    border: 1px solid rgba(232, 226, 216, 0.35);
}
.frame-corner--tl { top: 0; left: 0; border-right: 0; border-bottom: 0; }
.frame-corner--tr { top: 0; right: 0; border-left: 0; border-bottom: 0; }
.frame-corner--bl { bottom: 0; left: 0; border-right: 0; border-top: 0; }
.frame-corner--br { bottom: 0; right: 0; border-left: 0; border-top: 0; }

/* =========================================================
   Candle glow — the lighting model
   ========================================================= */
.candle-glow {
    position: absolute;
    z-index: 2;
    width: 90vw;
    height: 90vh;
    pointer-events: none;
    background: radial-gradient(ellipse at 50% 60%,
        rgba(200, 90, 42, 0.55) 0%,
        rgba(212, 149, 43, 0.35) 22%,
        rgba(212, 149, 43, 0.10) 45%,
        transparent 72%);
    transform-origin: 50% 60%;
    filter: blur(8px);
    will-change: transform, opacity;
    animation: flameFlicker 4.2s var(--ease-flame) infinite;
}
.candle-glow--center {
    top: 50%; left: 50%;
    transform: translate(-50%, -50%) scale(1);
}
.candle-glow--right {
    top: 50%; right: -20vw;
    transform: translateY(-50%) scale(1);
}
.candle-glow--left {
    top: 50%; left: -20vw;
    transform: translateY(-50%) scale(1);
}
.candle-glow--soft {
    opacity: 0.55;
    background: radial-gradient(ellipse at 50% 60%,
        rgba(212, 149, 43, 0.45) 0%,
        rgba(200, 90, 42, 0.18) 30%,
        transparent 70%);
    mix-blend-mode: multiply;
}
.candle-glow--small {
    width: 60vw;
    height: 50vh;
}

@keyframes flameFlicker {
    0%   { opacity: 0.72; filter: blur(8px) brightness(1.0); transform: translate(-50%, -50%) scale(1.00); }
    14%  { opacity: 0.78; filter: blur(8px) brightness(1.05); transform: translate(-50%, -50%) scale(1.03); }
    28%  { opacity: 0.66; filter: blur(9px) brightness(0.96); transform: translate(-50%, -50%) scale(0.98); }
    44%  { opacity: 0.80; filter: blur(7px) brightness(1.08); transform: translate(-50%, -50%) scale(1.04); }
    61%  { opacity: 0.62; filter: blur(10px) brightness(0.94); transform: translate(-50%, -50%) scale(0.96); }
    78%  { opacity: 0.74; filter: blur(8px) brightness(1.02); transform: translate(-50%, -50%) scale(1.02); }
    100% { opacity: 0.70; filter: blur(8px) brightness(1.0); transform: translate(-50%, -50%) scale(1.00); }
}
.candle-glow--right { animation-name: flameFlickerRight; }
.candle-glow--left  { animation-name: flameFlickerLeft; }

@keyframes flameFlickerRight {
    0%, 100% { opacity: 0.70; transform: translateY(-50%) scale(1.00); }
    25% { opacity: 0.78; transform: translateY(-48%) scale(1.04); }
    55% { opacity: 0.62; transform: translateY(-52%) scale(0.97); }
    78% { opacity: 0.76; transform: translateY(-49%) scale(1.02); }
}
@keyframes flameFlickerLeft {
    0%, 100% { opacity: 0.70; transform: translateY(-50%) scale(1.00); }
    20% { opacity: 0.66; transform: translateY(-51%) scale(0.98); }
    48% { opacity: 0.82; transform: translateY(-49%) scale(1.05); }
    72% { opacity: 0.64; transform: translateY(-50%) scale(0.96); }
}

/* =========================================================
   Chamber grid — 12-col with alternating asymmetry
   ========================================================= */
.chamber-grid {
    position: relative;
    z-index: 4;
    height: 100%;
    padding: calc(var(--engawa-h) + 6vh) var(--gutter) 6vh;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
    align-items: center;
}
.chamber-mid {
    grid-column: 1 / span 6;
    will-change: transform;
}
.chamber-grid--right .chamber-mid {
    grid-column: 7 / span 6;
}
.chamber-grid--centered .chamber-mid {
    grid-column: 3 / span 8;
    justify-self: center;
    text-align: center;
}
.chamber-fg {
    position: absolute;
    inset: 0;
    z-index: 5;
    pointer-events: none;
    will-change: transform;
}

/* =========================================================
   Typography — Josefin Sans tokonoma
   ========================================================= */
.tokonoma {
    font-family: var(--f-display);
    font-weight: 300;
    font-size: clamp(2.5rem, 8vw, 7rem);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    line-height: 1.05;
    margin: 0.25em 0 0.6em;
    color: inherit;
    text-shadow: 2px 2px 8px rgba(200, 90, 42, 0.18);
    animation: textFlicker 4.2s var(--ease-flame) infinite;
}
.chamber--light .tokonoma {
    text-shadow: 1px 1px 6px rgba(212, 149, 43, 0.20);
}
.tokonoma--massive {
    font-size: clamp(3.5rem, 12vw, 11rem);
    letter-spacing: 0.08em;
    line-height: 0.95;
}
.tokonoma--right { text-align: right; }
.tokonoma--center { text-align: center; }
.tokonoma--small {
    font-size: clamp(1rem, 1.6vw, 1.4rem);
    letter-spacing: 0.4em;
    font-weight: 400;
    color: var(--c-persimmon);
    text-shadow: none;
    animation: none;
}

@keyframes textFlicker {
    0%, 100% { text-shadow: 2px 2px 8px rgba(200, 90, 42, 0.18); }
    35% { text-shadow: 3px 3px 12px rgba(200, 90, 42, 0.28); }
    65% { text-shadow: 2px 2px 6px rgba(200, 90, 42, 0.10); }
}

.kicker {
    color: var(--c-persimmon);
    font-size: 0.78rem;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    margin: 0;
}
.chamber--light .kicker { color: var(--c-persimmon); }

.mono {
    font-family: var(--f-mono);
    letter-spacing: 0.06em;
}

.prose {
    max-width: 36ch;
    font-size: clamp(0.95rem, 1.1vw, 1.15rem);
    line-height: 1.72;
    letter-spacing: 0.01em;
    margin: 1.6rem 0;
}
.prose--single { max-width: 42ch; margin-top: 1.4rem; }
.prose p { margin: 0 0 1rem; }
.chamber-grid--right .prose { margin-left: auto; text-align: right; }
.chamber-grid--right .prose p { margin-left: auto; }

.ember {
    background-image: linear-gradient(to top, rgba(212,149,43,0.55) 0 1.5px, transparent 1.5px);
    background-position: 0 100%;
    background-repeat: no-repeat;
    padding-bottom: 2px;
    color: inherit;
    transition: background-image 200ms var(--ease-soft);
}
.ember:hover {
    background-image: linear-gradient(to top, rgba(212,149,43,0.55) 0 100%, transparent 100%);
    color: var(--c-carbon);
}

/* =========================================================
   Section 01 — Ignition specifics
   ========================================================= */
.ignition-stack {
    text-align: center;
    width: 100%;
}
.chamber--ignition .chamber-mid {
    grid-column: 2 / span 10;
    text-align: center;
}
.chamber--ignition .tokonoma {
    font-size: clamp(3rem, 10vw, 9rem);
    letter-spacing: 0.2em;
    color: var(--c-ash);
    margin: 1rem auto;
}
.tokonoma .char {
    display: inline-block;
    opacity: 0;
    transform: translateY(10px);
    animation: charLight 900ms var(--ease-soft) forwards;
}
.tokonoma .char:nth-child(1) { animation-delay: 1.30s; }
.tokonoma .char:nth-child(2) { animation-delay: 1.34s; }
.tokonoma .char:nth-child(3) { animation-delay: 1.38s; }
.tokonoma .char:nth-child(4) { animation-delay: 1.42s; }
.tokonoma .char:nth-child(5) { animation-delay: 1.46s; }
.tokonoma .char:nth-child(6) { animation-delay: 1.50s; }
.tokonoma .char:nth-child(7) { animation-delay: 1.54s; }

@keyframes charLight {
    from { opacity: 0; transform: translateY(10px); filter: blur(4px); }
    to   { opacity: 1; transform: translateY(0); filter: blur(0); }
}

.ignition-tagline {
    max-width: 48ch;
    margin: 1.4rem auto 0;
    font-size: clamp(0.95rem, 1.15vw, 1.2rem);
    line-height: 1.7;
    color: var(--c-ash);
    opacity: 0;
    animation: fadeUp 1.2s var(--ease-soft) 2.4s forwards;
}
.ignition-coords {
    margin-top: 2.8rem;
    font-size: 0.75rem;
    opacity: 0;
    color: var(--c-ember);
    animation: fadeUp 1s var(--ease-soft) 2.9s forwards;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* The first-light radial sweep */
.chamber--ignition .candle-glow--center {
    transform: translate(-50%, -50%) scale(0.05);
    opacity: 0;
    animation: firstLight 1.6s var(--ease-soft) 0.6s forwards, flameFlicker 4.2s var(--ease-flame) 2.2s infinite;
}
@keyframes firstLight {
    0%   { transform: translate(-50%, -50%) scale(0.05); opacity: 0; }
    100% { transform: translate(-50%, -50%) scale(1.00); opacity: 0.78; }
}

/* =========================================================
   Meta lists & data lines
   ========================================================= */
.meta-list {
    list-style: none;
    padding: 0;
    margin: 2.2rem 0 0;
    font-size: 0.78rem;
    text-transform: uppercase;
}
.chamber-grid--right .meta-list { text-align: right; }
.meta-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.55rem 0;
    border-top: 1px solid rgba(26,23,20,0.12);
}
.chamber--dark .meta-list li { border-top-color: rgba(232,226,216,0.10); }
.meta-list li:last-child { border-bottom: 1px solid rgba(26,23,20,0.12); }
.chamber--dark .meta-list li:last-child { border-bottom-color: rgba(232,226,216,0.10); }
.meta-key { opacity: 0.55; }
.meta-val { color: var(--c-persimmon); }

.dataline {
    display: grid;
    grid-template-columns: 80px 1fr 60px;
    align-items: center;
    gap: 14px;
    margin: 0.8rem 0;
    font-size: 0.75rem;
}
.chamber-grid--right .dataline { direction: rtl; }
.chamber-grid--right .dataline > * { direction: ltr; }
.dataline-bar {
    position: relative;
    height: 1px;
    background: rgba(26,23,20,0.18);
}
.chamber--dark .dataline-bar { background: rgba(232,226,216,0.14); }
.dataline-fill {
    position: absolute;
    inset: 0;
    width: var(--w, 50%);
    background: var(--c-persimmon);
    box-shadow: 0 0 12px rgba(200,90,42,0.5);
    transform-origin: left center;
    transform: scaleX(0);
    animation: drawBar 1.4s var(--ease-soft) forwards;
}
.chamber-grid--right .dataline-fill { right: 0; left: auto; }
@keyframes drawBar { to { transform: scaleX(1); } }

.lifecycle {
    list-style: none;
    padding: 0;
    margin: 2rem 0 0;
    columns: 2;
    column-gap: 32px;
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-ash);
    opacity: 0.72;
}
.lifecycle li {
    padding: 0.4rem 0;
    break-inside: avoid;
}
.lifecycle li span { color: var(--c-ember); margin-right: 6px; }

/* Ledger (section 06) */
.ledger {
    margin-top: 2rem;
    border-top: 1px solid rgba(26,23,20,0.18);
}
.ledger-row {
    display: flex;
    justify-content: space-between;
    padding: 0.6rem 0;
    font-size: 0.74rem;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(26,23,20,0.10);
    opacity: 0.85;
}
.ledger-row span:first-child { color: var(--c-persimmon); }

/* =========================================================
   Colophon (section 07)
   ========================================================= */
.colophon { padding: 0 2rem; }
.colophon .tokonoma--small { display: block; margin: 1rem 0 2.4rem; }
.colophon-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    text-align: left;
    margin: 0 auto;
    max-width: 800px;
}
.colophon-grid p { margin: 0 0 0.4rem; font-size: 0.85rem; line-height: 1.65; }
.col-key {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--c-persimmon);
    margin-bottom: 0.4rem;
}
.colophon-mark {
    margin-top: 3rem;
    font-size: 0.72rem;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--c-ember);
    opacity: 0.8;
}

/* =========================================================
   Nature SVGs — foreground parallax layer
   ========================================================= */
.nature {
    position: absolute;
    color: rgba(232,226,216,0.6);
    transition: color 600ms var(--ease-soft);
}
.chamber--light .nature { color: rgba(26,23,20,0.55); }

.nature--enso {
    width: clamp(200px, 22vw, 320px);
    aspect-ratio: 1;
    top: 14%;
    right: 8%;
    opacity: 0.7;
}
.nature--enso--small {
    width: clamp(160px, 18vw, 240px);
    top: 12%;
    left: 6%;
    right: auto;
    opacity: 0.6;
}
.nature--bamboo {
    width: clamp(80px, 8vw, 120px);
    height: 70vh;
    top: 12vh;
    left: 4vw;
    opacity: 0.55;
}
.nature--mountain {
    width: clamp(280px, 30vw, 460px);
    top: 18%;
    right: 6vw;
    opacity: 0.5;
}
.nature--water {
    width: 60vw;
    height: 30vh;
    bottom: 14vh;
    left: 4vw;
    opacity: 0.55;
}
.nature--blossom {
    width: clamp(220px, 24vw, 360px);
    top: 12%;
    right: 6vw;
    opacity: 0.55;
}
.water-line {
    stroke-dasharray: 12 6;
    animation: waterFlow 14s linear infinite;
}
.water-line--2 { animation-duration: 18s; opacity: 0.7; }
.water-line--3 { animation-duration: 22s; opacity: 0.55; }
@keyframes waterFlow {
    from { stroke-dashoffset: 0; }
    to   { stroke-dashoffset: -200; }
}

/* =========================================================
   Glitch System
   ========================================================= */
.glitch-stage {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 80;
    overflow: hidden;
}
.glitch-band {
    position: absolute;
    left: 0;
    width: 100%;
    height: 4px;
    opacity: 0;
    mix-blend-mode: screen;
    transform: translateX(0);
}
.glitch-band--red {
    background: linear-gradient(to right, transparent 0%, rgba(224,60,40,0.85) 30%, rgba(224,60,40,0.95) 70%, transparent 100%);
    box-shadow: 0 0 12px rgba(224,60,40,0.5);
}
.glitch-band--cyan {
    background: linear-gradient(to right, transparent 0%, rgba(40,184,212,0.7) 30%, rgba(40,184,212,0.8) 70%, transparent 100%);
    box-shadow: 0 0 12px rgba(40,184,212,0.4);
}
.glitch-band.is-active {
    animation: bandFire 200ms steps(1) forwards;
}
.glitch-band--cyan.is-active {
    animation: bandFireCyan 140ms steps(1) forwards;
}
@keyframes bandFire {
    0% { opacity: 1; transform: translateX(14px); height: 4px; }
    50% { opacity: 1; transform: translateX(14px); height: 6px; }
    100% { opacity: 0; transform: translateX(0); height: 0; }
}
@keyframes bandFireCyan {
    0% { opacity: 1; transform: translateX(-10px); height: 3px; }
    50% { opacity: 1; transform: translateX(-10px); height: 4px; }
    100% { opacity: 0; transform: translateX(0); height: 0; }
}

.glitch-scan {
    position: absolute;
    left: 0;
    width: 100%;
    height: 1px;
    top: -2px;
    background: rgba(255,255,255,0.04);
    box-shadow: 0 0 8px rgba(255,255,255,0.04);
    opacity: 0;
}
.glitch-scan.is-sweeping {
    animation: scanSweep 420ms linear forwards;
}
@keyframes scanSweep {
    0%   { top: -2px; opacity: 1; }
    100% { top: 102vh; opacity: 0.2; }
}

.glitch-tint {
    position: absolute;
    inset: 0;
    background: rgba(232, 226, 216, 0);
    opacity: 0;
    mix-blend-mode: overlay;
}
.glitch-tint.is-active {
    animation: tintFlash 60ms steps(1) forwards;
}
@keyframes tintFlash {
    0% { opacity: 1; background: rgba(232,226,216,0.06); }
    100% { opacity: 0; background: rgba(232,226,216,0); }
}

/* Major glitch — applied briefly to body */
body.is-major-glitch .procession {
    filter: contrast(1.12) brightness(1.06);
    transform: translateX(2px);
}
body.is-major-glitch .tokonoma {
    text-shadow:
        2px 0 rgba(224,60,40,0.6),
       -2px 0 rgba(40,184,212,0.5),
        0 0 12px rgba(200,90,42,0.4);
}

/* =========================================================
   Inter-section transitional zone (gradient)
   ========================================================= */
.chamber + .chamber::after {
    /* Small gradient strip stitched at the seam between sections */
    content: "";
    position: absolute;
    top: -10vh;
    left: 0;
    width: 100%;
    height: 20vh;
    z-index: 0;
    pointer-events: none;
}
.chamber--light + .chamber::after {
    background: linear-gradient(to bottom, var(--c-washi) 0%, var(--c-twilight) 60%, var(--c-sumi) 100%);
}
.chamber--dark + .chamber::after {
    background: linear-gradient(to bottom, var(--c-sumi) 0%, var(--c-twilight) 40%, var(--c-washi) 100%);
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 900px) {
    .chamber-grid {
        padding: calc(var(--engawa-h) + 8vh) 24px 8vh;
        gap: 16px;
    }
    .chamber-mid,
    .chamber-grid--right .chamber-mid,
    .chamber-grid--centered .chamber-mid {
        grid-column: 1 / -1;
    }
    .chamber-grid--right .prose,
    .chamber-grid--right .meta-list,
    .chamber-grid--right .tokonoma {
        text-align: left;
    }
    .chamber-grid--right .prose { margin-left: 0; }
    .colophon-grid { grid-template-columns: 1fr; }
    .lifecycle { columns: 1; }
    .nature--bamboo { left: -4vw; opacity: 0.3; }
    .nature--mountain,
    .nature--blossom,
    .nature--enso { opacity: 0.35; }
    .engawa-meta { display: none; }
    .engawa-inner { grid-template-columns: 1fr auto; }
}

@media (max-width: 540px) {
    .tokonoma { letter-spacing: 0.08em; }
    .chamber--ignition .tokonoma { letter-spacing: 0.14em; }
    .lifecycle { columns: 1; }
}

/* =========================================================
   Scroll reveal helpers (added by JS)
   ========================================================= */
.chamber:not(.chamber--ignition) .chamber-mid > * {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 1s var(--ease-soft), transform 1s var(--ease-soft);
}
.chamber:not(.chamber--ignition) .chamber-mid > *:nth-child(1) { transition-delay: 0.05s; }
.chamber:not(.chamber--ignition) .chamber-mid > *:nth-child(2) { transition-delay: 0.18s; }
.chamber:not(.chamber--ignition) .chamber-mid > *:nth-child(3) { transition-delay: 0.32s; }
.chamber:not(.chamber--ignition) .chamber-mid > *:nth-child(4) { transition-delay: 0.46s; }
.chamber:not(.chamber--ignition) .chamber-mid > *:nth-child(5) { transition-delay: 0.60s; }
.chamber:not(.chamber--ignition) .chamber-mid > *:nth-child(6) { transition-delay: 0.74s; }
.chamber:not(.chamber--ignition) .chamber-mid > *:nth-child(7) { transition-delay: 0.88s; }
.chamber.is-revealed .chamber-mid > * {
    opacity: 1;
    transform: translateY(0);
}