/* =============================================================
   rinji.dev — 臨時 (temporary / provisional)
   Glitch-forward, ephemeral digital aesthetic.
   ============================================================= */

:root {
    /* Palette — exact from DESIGN.md */
    --void-black:        #0a0a0f;
    --deep-indigo:       #1a1a2e;
    --midnight-navy:     #16213e;
    --static-white:      #e2e2e2;
    --terminal-green:    #00ff88;
    --corruption-pink:   #ff3366;
    --signal-blue:       #4a90d9;
    --muted-plum:        #2d2d44;

    /* Active accent — switched per section by JS */
    --accent: var(--terminal-green);

    /* Decay drivers — updated on scroll for sections behind viewport */
    --decay-rate: 0;

    /* Fonts */
    --font-display: "Share Tech Mono", "IBM Plex Mono", ui-monospace, monospace;
    --font-body:    "IBM Plex Sans", "Inter", system-ui, -apple-system, sans-serif;
    --font-jp:      "Noto Sans JP", "IBM Plex Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--void-black);
    color: var(--static-white);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background:
        radial-gradient(ellipse at 20% 0%, rgba(26, 26, 46, 0.55) 0%, transparent 55%),
        radial-gradient(ellipse at 80% 100%, rgba(22, 33, 62, 0.45) 0%, transparent 55%),
        var(--void-black);
}

::selection {
    background: var(--terminal-green);
    color: var(--void-black);
}

/* SVG defs container — invisible */
.svg-defs {
    position: absolute;
    width: 0;
    height: 0;
    pointer-events: none;
}

/* =============================================================
   Global noise overlay — animated film grain
   ============================================================= */
.noise-overlay {
    position: fixed;
    inset: -10vh -10vw;
    pointer-events: none;
    z-index: 9000;
    opacity: 0.06;
    will-change: transform;
    background-image:
        repeating-linear-gradient(0deg, rgba(226,226,226,0.04) 0 1px, transparent 1px 3px),
        repeating-linear-gradient(90deg, rgba(226,226,226,0.025) 0 1px, transparent 1px 3px);
    mix-blend-mode: screen;
    animation: noiseDrift 0.16s steps(2) infinite;
}

.noise-overlay::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch' seed='3'/><feColorMatrix type='matrix' values='0 0 0 0 0.88  0 0 0 0 0.88  0 0 0 0 0.88  0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.7'/></svg>");
    background-size: 220px 220px;
    opacity: 0.55;
    mix-blend-mode: screen;
    animation: noiseShift 100ms steps(2) infinite;
}

@keyframes noiseDrift {
    0%   { transform: translate(0, 0); }
    25%  { transform: translate(-2px, 1px); }
    50%  { transform: translate(1px, -2px); }
    75%  { transform: translate(-1px, 2px); }
    100% { transform: translate(2px, -1px); }
}

@keyframes noiseShift {
    0%   { transform: translate(0, 0); }
    25%  { transform: translate(-7px, 4px); }
    50%  { transform: translate(5px, -8px); }
    75%  { transform: translate(-4px, 6px); }
    100% { transform: translate(8px, -3px); }
}

/* Scanline overlay on body */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 8000;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 2px,
        rgba(10, 10, 15, 0.18) 3px,
        transparent 4px
    );
    mix-blend-mode: multiply;
}

/* =============================================================
   Drifting geometric debris (border-only triangles + rects)
   ============================================================= */
.debris-field {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.debris {
    position: absolute;
    display: block;
    will-change: transform;
}

.debris-tri-1, .debris-tri-2, .debris-tri-3, .debris-tri-4 {
    width: 0;
    height: 0;
    border-left: 24px solid transparent;
    border-right: 24px solid transparent;
    border-bottom: 42px solid rgba(0, 255, 136, 0.10);
    background: transparent;
}

.debris-tri-1 { top: 12%;  left: 8%;  animation: drift1 60s linear infinite; }
.debris-tri-2 { top: 38%;  left: 78%; transform: scale(1.7); animation: drift2 72s linear infinite; }
.debris-tri-3 { top: 65%;  left: 22%; transform: scale(0.9) rotate(180deg); border-bottom-color: rgba(74, 144, 217, 0.10); animation: drift3 84s linear infinite; }
.debris-tri-4 { top: 88%;  left: 60%; transform: scale(1.3) rotate(45deg); border-bottom-color: rgba(255, 51, 102, 0.10); animation: drift4 66s linear infinite; }

.debris-rect-1, .debris-rect-2, .debris-rect-3, .debris-rect-4 {
    border: 1px solid rgba(0, 255, 136, 0.12);
    background: transparent;
}

.debris-rect-1 { top: 22%; left: 55%; width: 90px;  height: 18px; transform: rotate(12deg); animation: drift2 90s linear infinite; }
.debris-rect-2 { top: 50%; left: 6%;  width: 140px; height: 6px;  transform: rotate(-7deg); border-color: rgba(74, 144, 217, 0.14); animation: drift3 78s linear infinite; }
.debris-rect-3 { top: 75%; left: 82%; width: 60px;  height: 60px; transform: rotate(28deg); border-color: rgba(255, 51, 102, 0.10); animation: drift1 96s linear infinite; }
.debris-rect-4 { top: 5%;  left: 40%; width: 30px;  height: 110px; transform: rotate(-18deg); animation: drift4 102s linear infinite; }

@keyframes drift1 {
    0%   { transform: translate(0, 0) rotate(0deg); }
    50%  { transform: translate(40px, 60px) rotate(180deg); }
    100% { transform: translate(0, 0) rotate(360deg); }
}
@keyframes drift2 {
    0%   { transform: translate(0, 0) rotate(12deg); }
    50%  { transform: translate(-50px, 30px) rotate(192deg); }
    100% { transform: translate(0, 0) rotate(372deg); }
}
@keyframes drift3 {
    0%   { transform: translate(0, 0) rotate(-7deg) scale(0.9); }
    50%  { transform: translate(70px, -40px) rotate(173deg) scale(1.05); }
    100% { transform: translate(0, 0) rotate(353deg) scale(0.9); }
}
@keyframes drift4 {
    0%   { transform: translate(0, 0) rotate(45deg); }
    50%  { transform: translate(-30px, -80px) rotate(225deg); }
    100% { transform: translate(0, 0) rotate(405deg); }
}

/* =============================================================
   Vertical progress nav (left edge)
   ============================================================= */
.progress-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 56px;
    height: 100vh;
    z-index: 7500;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px 0 24px;
    pointer-events: none;
}

.progress-nav > * { pointer-events: auto; }

.logotype {
    font-family: var(--font-jp);
    font-weight: 700;
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--static-white);
    text-decoration: none;
    writing-mode: vertical-rl;
    text-orientation: upright;
    margin-bottom: 18px;
    opacity: 0.85;
    transition: color 0.25s ease;
}

.logotype:hover { color: var(--accent); }

.progress-rail {
    position: relative;
    width: 8px;
    flex: 1;
    background: var(--muted-plum);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: inset 0 0 0 1px rgba(226, 226, 226, 0.04);
    animation: railPulse 2s ease-in-out infinite;
}

.progress-fill {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0%;
    background: linear-gradient(to bottom, var(--accent), transparent 130%);
    box-shadow: 0 0 12px var(--accent), 0 0 4px var(--accent);
    transition: height 0.12s linear, background 0.4s ease;
}

@keyframes railPulse {
    0%, 100% { box-shadow: inset 0 0 0 1px rgba(226, 226, 226, 0.04), 0 0 0 rgba(0,0,0,0); }
    50%      { box-shadow: inset 0 0 0 1px rgba(226, 226, 226, 0.04), 0 0 14px color-mix(in srgb, var(--accent) 60%, transparent); }
}

.section-dots {
    list-style: none;
    margin: 16px 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.section-dots a {
    display: block;
    width: 7px;
    height: 7px;
    border: 1px solid var(--muted-plum);
    background: transparent;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.18s ease, filter 0.15s ease;
    transform: rotate(45deg);
}

.section-dots a:hover {
    filter: hue-rotate(180deg) translateX(2px);
    transform: rotate(45deg) translateX(2px);
}

.section-dots a.is-active {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 8px var(--accent);
}

/* =============================================================
   Intro stage — pixel assembly + typewriter
   ============================================================= */
.intro {
    position: relative;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0 64px 0 96px;
    z-index: 5;
}

.intro-stage {
    display: flex;
    align-items: center;
    gap: 36px;
    font-family: var(--font-jp);
    font-weight: 900;
    line-height: 1;
}

.kanji-assembler {
    position: relative;
    width: 240px;
    height: 240px;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    gap: 2px;
}

.kanji-assembler .px {
    background: var(--terminal-green);
    box-shadow: 0 0 6px rgba(0, 255, 136, 0.5);
    opacity: 0;
    transform: translate(var(--from-x, 0px), var(--from-y, 0px));
    transition: transform 1.4s cubic-bezier(0.18, 0.9, 0.25, 1), opacity 0.6s ease;
    will-change: transform, opacity;
}

.kanji-assembler.is-assembled .px {
    transform: translate(0, 0);
    opacity: 1;
}

/* Once assembled, stamp the actual kanji over the pixel grid for crisp legibility */
.kanji-assembler.is-assembled::after {
    content: "臨";
    position: absolute;
    inset: 0;
    color: var(--static-white);
    font-family: var(--font-jp);
    font-weight: 900;
    font-size: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    text-shadow:
        2px 0 0 var(--corruption-pink),
       -2px 0 0 var(--signal-blue),
        0 0 12px rgba(0, 255, 136, 0.35);
    animation: rgbSplit 4s steps(8) infinite;
    pointer-events: none;
}

.kanji-typer {
    font-size: 240px;
    color: var(--static-white);
    border-right: 4px solid var(--terminal-green);
    padding-right: 6px;
    overflow: hidden;
    white-space: nowrap;
    width: 0;
    animation: typewriter 1.4s steps(2, end) 1.6s forwards, caretBlink 1s steps(1) 2.6s 4;
    text-shadow:
        2px 0 0 var(--corruption-pink),
       -2px 0 0 var(--signal-blue);
}

.kanji-typer.is-done {
    animation: rgbSplit 4s steps(8) infinite;
    border-right: none;
    width: auto;
}

@keyframes typewriter {
    0%   { width: 0; }
    100% { width: 1em; }
}

@keyframes caretBlink {
    0%, 49%   { border-right-color: var(--terminal-green); }
    50%, 100% { border-right-color: transparent; }
}

@keyframes rgbSplit {
    0%   { text-shadow: 2px 0 0 var(--corruption-pink), -2px 0 0 var(--signal-blue), 0 0 12px rgba(0, 255, 136, 0.35); }
    20%  { text-shadow: -3px 1px 0 var(--corruption-pink), 3px -1px 0 var(--signal-blue), 0 0 12px rgba(0, 255, 136, 0.35); }
    40%  { text-shadow: 1px -2px 0 var(--corruption-pink), -1px 2px 0 var(--signal-blue), 0 0 12px rgba(0, 255, 136, 0.35); }
    60%  { text-shadow: 2px 2px 0 var(--corruption-pink), -2px -2px 0 var(--signal-blue), 0 0 12px rgba(0, 255, 136, 0.35); }
    80%  { text-shadow: -2px 0 0 var(--corruption-pink), 2px 0 0 var(--signal-blue), 0 0 16px rgba(0, 255, 136, 0.45); }
    100% { text-shadow: 2px 0 0 var(--corruption-pink), -2px 0 0 var(--signal-blue), 0 0 12px rgba(0, 255, 136, 0.35); }
}

.intro-meta {
    margin-top: 64px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-family: var(--font-display);
    font-size: 11px;
    color: var(--muted-plum);
    opacity: 0;
    animation: introMetaIn 1s ease 3.0s forwards;
}

.intro-meta .meta-line { letter-spacing: 0.15em; }

@keyframes introMetaIn {
    0%   { opacity: 0; transform: translateY(6px); }
    100% { opacity: 0.7; transform: translateY(0); }
}

/* Pre-assembly: full void — black for 500ms */
.intro::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--void-black);
    z-index: 10;
    animation: voidLift 0.5s steps(1) 0.5s forwards;
}

@keyframes voidLift {
    to { opacity: 0; pointer-events: none; }
}

/* =============================================================
   Bands (sections)
   ============================================================= */
main { position: relative; z-index: 4; }

.band {
    position: relative;
    padding: 120px 64px 120px 96px;
    min-height: 100vh;
    overflow: hidden;
    isolation: isolate;
    transform: rotate(var(--band-rot, 0deg));
    transform-origin: center center;
    /* Decay drivers updated by JS via --decay-rate per section */
    opacity: calc(1 - var(--decay-rate, 0) * 0.55);
    filter: saturate(calc(1 - var(--decay-rate, 0) * 0.5));
    transition: opacity 0.3s ease, filter 0.3s ease;
}

.band::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        linear-gradient(180deg, var(--void-black) 0%, var(--deep-indigo) 60%, var(--void-black) 100%);
    opacity: 0.55;
}

#section-rin       { --band-rot: -1deg; }
#section-ji        { --band-rot:  1.5deg; }
#section-decay     { --band-rot: -2deg; }
#section-mono      { --band-rot:  1deg; }
#section-fragments { --band-rot: -1.5deg; }
#section-trace     { --band-rot:  0.8deg; }

.band-final { padding-bottom: 220px; }

/* Corruption bands (top/bottom of every other section) */
.corruption-band {
    position: absolute;
    left: -4vw;
    right: -4vw;
    height: 56px;
    z-index: 3;
    overflow: hidden;
    background:
        repeating-linear-gradient(
            87deg,
            var(--void-black) 0 14px,
            var(--corruption-pink) 14px 16px,
            var(--void-black) 16px 22px,
            var(--terminal-green) 22px 23px,
            var(--void-black) 23px 38px,
            var(--signal-blue) 38px 40px,
            var(--void-black) 40px 64px
        ),
        repeating-linear-gradient(
            -3deg,
            transparent 0 6px,
            rgba(226, 226, 226, 0.04) 6px 7px,
            transparent 7px 14px
        );
    background-size: 220% 100%, 100% 100%;
    animation: corruptionShift 8s linear infinite;
    border-top: 1px solid var(--muted-plum);
    border-bottom: 1px solid var(--muted-plum);
    transform: skewY(-1.2deg);
}

.corruption-band-top    { top: 0; }
.corruption-band-bottom { bottom: 0; }

@keyframes corruptionShift {
    0%   { background-position: 0 0, 0 0; }
    50%  { background-position: 60% 0, 30% 0; }
    100% { background-position: 100% 0, 0 0; }
}

/* Kanji watermark behind band */
.kanji-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-3deg);
    font-family: var(--font-jp);
    font-weight: 900;
    color: var(--static-white);
    font-size: 32vw;
    opacity: 0.05;
    line-height: 1;
    z-index: 0;
    pointer-events: none;
    user-select: none;
    letter-spacing: -0.04em;
}

.watermark-rotate-pos { transform: translate(-50%, -50%) rotate(4deg); }
.watermark-rotate-neg { transform: translate(-50%, -50%) rotate(-5deg); }

/* =============================================================
   16-column broken grid (with corrupted columns 4, 9, 13)
   ============================================================= */
.grid-16 {
    position: relative;
    display: grid;
    grid-template-columns: repeat(16, 1fr);
    grid-auto-rows: minmax(40px, auto);
    gap: 20px 14px;
    z-index: 2;
}

/* Corrupted columns — visible static */
.static-cell {
    grid-row: 1 / -1;
    position: relative;
    border-left: 1px dashed var(--muted-plum);
    border-right: 1px dashed var(--muted-plum);
    background:
        repeating-linear-gradient(
            0deg,
            transparent 0 2px,
            rgba(226, 226, 226, 0.04) 2px 3px,
            transparent 3px 5px
        ),
        repeating-linear-gradient(
            45deg,
            transparent 0 4px,
            rgba(45, 45, 68, 0.55) 4px 5px,
            transparent 5px 9px
        );
    opacity: 0.65;
    pointer-events: none;
}

.static-cell::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='80'><filter id='s'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch' seed='5'/><feColorMatrix type='matrix' values='0 0 0 0 0.18  0 0 0 0 1  0 0 0 0 0.53  0 0 0 0.18 0'/></filter><rect width='100%' height='100%' filter='url(%23s)'/></svg>");
    background-size: 80px 80px;
    mix-blend-mode: screen;
    animation: staticSlide 1.4s steps(3) infinite;
    opacity: 0.7;
}

@keyframes staticSlide {
    0%   { background-position: 0 0; }
    100% { background-position: -80px 80px; }
}

.col-4  { grid-column: 4  / span 1; }
.col-9  { grid-column: 9  / span 1; }
.col-13 { grid-column: 13 / span 1; }

/* Band header — clusters in left side, leaving columns intentionally empty */
.band-header {
    grid-column: 1 / span 8;
    grid-row: 1 / span 1;
    padding: 8px 0 24px;
    position: relative;
}

.band-header-right {
    grid-column: 8 / span 9;
}

.band-index {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 0.25em;
    margin-bottom: 18px;
    padding: 3px 8px;
    border: 1px solid color-mix(in srgb, var(--accent) 50%, transparent);
    background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.band-sub {
    max-width: 56ch;
    color: color-mix(in srgb, var(--static-white) 80%, transparent);
    margin: 18px 0 0;
    font-size: 15px;
}

/* Glitch heading — three offset shadow copies, animated */
.glitch-heading {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(40px, 6.4vw, 88px);
    line-height: 1.05;
    margin: 0;
    color: var(--static-white);
    position: relative;
    letter-spacing: -0.01em;
    text-shadow:
        2px 0  0 var(--corruption-pink),
       -2px 0  0 var(--signal-blue),
        0 0 18px rgba(0, 255, 136, 0.10);
    animation: headingJitter 4s steps(8) infinite;
    will-change: text-shadow, transform;
}

.glitch-heading::before,
.glitch-heading::after {
    content: attr(data-text);
    position: absolute;
    inset: 0;
    pointer-events: none;
    font: inherit;
    color: var(--static-white);
    mix-blend-mode: screen;
    opacity: 0.6;
}

.glitch-heading::before {
    color: var(--corruption-pink);
    transform: translate(2px, 0);
    clip-path: polygon(0 0%, 100% 0%, 100% 33%, 0 33%);
    animation: glitchSliceA 4s steps(8) infinite;
}

.glitch-heading::after {
    color: var(--signal-blue);
    transform: translate(-2px, 0);
    clip-path: polygon(0 65%, 100% 65%, 100% 100%, 0 100%);
    animation: glitchSliceB 4s steps(8) infinite;
}

@keyframes headingJitter {
    0%, 100% { transform: translate(0, 0); }
    20%      { transform: translate(0, 1px); }
    40%      { transform: translate(0, -1px); }
    60%      { transform: translate(1px, 0); }
    80%      { transform: translate(-1px, 0); }
}

@keyframes glitchSliceA {
    0%   { transform: translate(2px, 0);   clip-path: polygon(0 0%, 100% 0%, 100% 33%, 0 33%); }
    25%  { transform: translate(3px, -1px); clip-path: polygon(0 12%, 100% 12%, 100% 28%, 0 28%); }
    50%  { transform: translate(-1px, 0);  clip-path: polygon(0 40%, 100% 40%, 100% 56%, 0 56%); }
    75%  { transform: translate(2px, 1px); clip-path: polygon(0 8%, 100% 8%, 100% 38%, 0 38%); }
    100% { transform: translate(2px, 0);   clip-path: polygon(0 0%, 100% 0%, 100% 33%, 0 33%); }
}

@keyframes glitchSliceB {
    0%   { transform: translate(-2px, 0);  clip-path: polygon(0 65%, 100% 65%, 100% 100%, 0 100%); }
    25%  { transform: translate(-3px, 1px); clip-path: polygon(0 70%, 100% 70%, 100% 90%, 0 90%); }
    50%  { transform: translate(1px, 0);   clip-path: polygon(0 50%, 100% 50%, 100% 80%, 0 80%); }
    75%  { transform: translate(-2px, -1px); clip-path: polygon(0 80%, 100% 80%, 100% 100%, 0 100%); }
    100% { transform: translate(-2px, 0);  clip-path: polygon(0 65%, 100% 65%, 100% 100%, 0 100%); }
}

.sub-heading {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: 24px;
    color: var(--accent);
    margin: 0 0 16px;
    letter-spacing: 0.05em;
    text-shadow: 1px 0 0 var(--corruption-pink), -1px 0 0 var(--signal-blue);
}

/* =============================================================
   Band panels — clip-path irregular polygons
   ============================================================= */
.band-panel {
    position: relative;
    background: color-mix(in srgb, var(--deep-indigo) 90%, transparent);
    border: 1px solid var(--muted-plum);
    padding: 28px 32px 32px;
    color: var(--static-white);
    backdrop-filter: blur(2px);
    box-shadow: 0 0 0 1px rgba(0, 255, 136, 0.04) inset;
}

.band-panel p { margin: 0 0 12px; max-width: 60ch; }
.band-panel p:last-child { margin-bottom: 0; }

.panel-a {
    grid-column: 1 / span 7;
    grid-row: 2 / span 2;
    clip-path: polygon(0% 0%, 96% 0%, 100% 8%, 100% 92%, 95% 100%, 4% 100%, 0% 94%);
    transform: rotate(-0.6deg);
}

.panel-b {
    grid-column: 5 / span 11;
    grid-row: 2 / span 2;
    clip-path: polygon(2% 0%, 100% 0%, 100% 90%, 96% 100%, 0% 100%, 0% 12%);
    transform: rotate(0.8deg);
}

.panel-c {
    grid-column: 2 / span 7;
    grid-row: 2 / span 2;
    clip-path: polygon(0% 4%, 95% 0%, 100% 12%, 100% 88%, 92% 100%, 6% 100%, 0% 96%);
    transform: rotate(-1deg);
}

.panel-d {
    grid-column: 7 / span 9;
    grid-row: 2 / span 2;
    clip-path: polygon(0% 0%, 100% 6%, 100% 88%, 96% 100%, 6% 100%, 0% 94%);
    transform: rotate(0.7deg);
}

.panel-e {
    grid-column: 2 / span 9;
    grid-row: 2 / span 2;
    clip-path: polygon(4% 0%, 100% 0%, 100% 84%, 96% 100%, 0% 100%, 0% 16%);
    transform: rotate(-0.5deg);
}

/* Terminal-style line */
.terminal-line {
    font-family: var(--font-display);
    font-size: 13px;
    color: var(--terminal-green);
    border-left: 2px solid var(--terminal-green);
    padding-left: 12px;
    margin-top: 16px;
    letter-spacing: 0.05em;
    background: color-mix(in srgb, var(--terminal-green) 8%, transparent);
}

/* Param list (key/value) */
.param-list {
    list-style: none;
    margin: 18px 0 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 24px;
    font-family: var(--font-display);
    font-size: 13px;
}

.param-list li {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px dashed var(--muted-plum);
    padding-bottom: 4px;
}

.param-key { color: color-mix(in srgb, var(--static-white) 60%, transparent); letter-spacing: 0.1em; }
.param-val { color: var(--accent); }

/* Haiku */
.haiku {
    margin: 18px 0 0;
    padding: 16px 20px;
    border-left: 3px solid var(--accent);
    background: color-mix(in srgb, var(--midnight-navy) 60%, transparent);
    font-family: var(--font-jp);
    font-style: normal;
    color: var(--static-white);
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 17px;
}

/* Trace link */
.trace-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-top: 22px;
    padding: 10px 18px;
    border: 1px solid var(--accent);
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    color: var(--accent);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 14px;
    letter-spacing: 0.15em;
    transition: filter 0.15s ease, transform 0.15s ease, background 0.25s ease;
}

.trace-link:hover {
    filter: hue-rotate(180deg) translateX(2px);
    transform: translateX(2px);
    background: color-mix(in srgb, var(--accent) 18%, transparent);
}

.trace-link-arrow { font-size: 18px; }

/* =============================================================
   Data viz aside elements
   ============================================================= */
.data-viz {
    position: relative;
    grid-row: 2 / span 2;
}

.data-viz-bars {
    grid-column: 14 / span 3;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    align-items: end;
    gap: 4px;
    height: 140px;
    border-bottom: 1px solid var(--muted-plum);
    padding-bottom: 4px;
}

.data-viz-bars span {
    background: linear-gradient(to top, var(--accent), color-mix(in srgb, var(--accent) 30%, transparent));
    height: var(--h, 50%);
    width: 100%;
    box-shadow: 0 0 6px color-mix(in srgb, var(--accent) 40%, transparent);
    animation: barFlicker 2.4s steps(6) infinite;
}

.data-viz-bars span:nth-child(2n)  { animation-delay: 0.4s; }
.data-viz-bars span:nth-child(3n)  { animation-delay: 0.8s; }
.data-viz-bars span:nth-child(5n)  { animation-delay: 1.2s; }

@keyframes barFlicker {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.55; transform: translateY(-2px); }
}

/* Circle ring */
.data-viz-circle {
    grid-column: 14 / span 3;
    width: 140px;
    height: 140px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
}

.ring {
    width: 140px;
    height: 140px;
    transform: rotate(-90deg);
}

.ring-track {
    fill: none;
    stroke: var(--muted-plum);
    stroke-width: 4;
}

.ring-fill {
    fill: none;
    stroke: var(--accent);
    stroke-width: 4;
    stroke-linecap: round;
    stroke-dasharray: 314.159;
    stroke-dashoffset: 314.159;
    transition: stroke-dashoffset 0.2s linear;
    filter: drop-shadow(0 0 4px var(--accent));
}

.ring-label {
    position: absolute;
    font-family: var(--font-display);
    font-size: 16px;
    color: var(--accent);
    letter-spacing: 0.1em;
}

/* Sine wave */
.data-viz-wave {
    grid-column: 11 / span 6;
    height: 110px;
}

.wave-svg {
    width: 100%;
    height: 100%;
    display: block;
    overflow: visible;
}

.wave-svg path {
    fill: none;
    stroke: var(--accent);
    stroke-width: 1.4;
    filter: drop-shadow(0 0 6px color-mix(in srgb, var(--accent) 60%, transparent));
}

/* Stack lines */
.data-viz-stack {
    grid-column: 1 / span 5;
    grid-row: 2 / span 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 14px;
    padding-right: 30px;
}

.stack-line {
    display: block;
    height: 2px;
    background: var(--accent);
    opacity: 0.45;
    width: 30%;
    box-shadow: 0 0 8px color-mix(in srgb, var(--accent) 60%, transparent);
    transform-origin: left center;
    animation: stackPulse 4s ease-in-out infinite;
}

.stack-line:nth-child(1) { width: 26%; animation-delay: 0s; }
.stack-line:nth-child(2) { width: 70%; animation-delay: 0.4s; }
.stack-line:nth-child(3) { width: 42%; animation-delay: 0.8s; }
.stack-line:nth-child(4) { width: 88%; animation-delay: 1.2s; }
.stack-line:nth-child(5) { width: 54%; animation-delay: 1.6s; }

@keyframes stackPulse {
    0%, 100% { transform: scaleX(1); opacity: 0.45; }
    50%      { transform: scaleX(1.06); opacity: 0.85; }
}

/* Final grid (16 cells) */
.data-viz-grid {
    grid-column: 12 / span 5;
    grid-row: 2 / span 2;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(4, 1fr);
    gap: 4px;
    aspect-ratio: 1 / 1;
    max-height: 200px;
    align-self: center;
}

.data-viz-grid span {
    border: 1px solid var(--muted-plum);
    background: color-mix(in srgb, var(--accent) 6%, transparent);
    animation: gridCellFlicker 3.2s steps(4) infinite;
}

.data-viz-grid span:nth-child(odd)  { animation-delay: 0.2s; }
.data-viz-grid span:nth-child(3n)   { animation-delay: 0.7s; background: color-mix(in srgb, var(--corruption-pink) 8%, transparent); }
.data-viz-grid span:nth-child(5n)   { animation-delay: 1.1s; background: color-mix(in srgb, var(--signal-blue) 8%, transparent); }

@keyframes gridCellFlicker {
    0%, 100% { opacity: 0.7; }
    50%      { opacity: 0.25; }
}

/* =============================================================
   Fragments list
   ============================================================= */
.fragments-list {
    grid-column: 1 / span 16;
    grid-row: 2 / span 4;
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(16, 1fr);
    gap: 18px 14px;
}

.fragment {
    background: color-mix(in srgb, var(--deep-indigo) 90%, transparent);
    border: 1px solid var(--muted-plum);
    padding: 18px 22px;
    position: relative;
    color: var(--static-white);
}

.fragment:nth-child(1) { grid-column: 1  / span 7;  transform: rotate(-1deg);  clip-path: polygon(0 0%, 96% 0%, 100% 18%, 100% 100%, 4% 100%, 0% 90%); }
.fragment:nth-child(2) { grid-column: 10 / span 7;  transform: rotate(0.8deg); clip-path: polygon(4% 0%, 100% 0%, 100% 88%, 96% 100%, 0% 100%, 0% 14%); }
.fragment:nth-child(3) { grid-column: 2  / span 6;  transform: rotate(-1.4deg); clip-path: polygon(0 6%, 100% 0%, 100% 100%, 6% 100%, 0% 92%); }
.fragment:nth-child(4) { grid-column: 8  / span 9;  transform: rotate(0.6deg); clip-path: polygon(0 0%, 100% 8%, 100% 100%, 4% 100%, 0% 86%); }
.fragment:nth-child(5) { grid-column: 5  / span 11; transform: rotate(-0.4deg); clip-path: polygon(0% 14%, 100% 0%, 100% 92%, 0% 100%); }

.fragment-id {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 11px;
    color: var(--corruption-pink);
    letter-spacing: 0.2em;
    margin-bottom: 8px;
}

.fragment p {
    margin: 0;
    font-family: var(--font-display);
    font-size: 14px;
    color: var(--static-white);
    line-height: 1.6;
}

/* =============================================================
   Footer
   ============================================================= */
.page-footer {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 32px;
    padding: 0 64px 0 96px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    font-family: var(--font-display);
    font-size: 11px;
    color: var(--muted-plum);
    letter-spacing: 0.15em;
    flex-wrap: wrap;
}

/* =============================================================
   Decay drift — applied via inline --decay-rate, here is letter spacing
   ============================================================= */
.band .glitch-heading,
.band .sub-heading,
.band p,
.band li {
    letter-spacing: calc(var(--decay-rate, 0) * 0.06em);
    transition: letter-spacing 0.3s ease;
}

/* When section is decayed enough, panels become more irregular */
.band .band-panel,
.band .fragment {
    --decay-corner: calc(var(--decay-rate, 0) * 8%);
    transition: clip-path 0.4s ease, transform 0.4s ease;
}

/* =============================================================
   Hover signal interference (links + dots)
   ============================================================= */
a, .trace-link {
    transition: filter 0.15s ease, transform 0.15s ease, color 0.2s ease;
}

a {
    color: var(--signal-blue);
    text-decoration: none;
}

a:hover {
    color: var(--corruption-pink);
}

/* =============================================================
   Responsive — collapse 16-col on narrow widths
   ============================================================= */
@media (max-width: 980px) {
    .band { padding: 100px 28px 100px 64px; }
    .band-header,
    .band-header-right,
    .band-panel,
    .data-viz,
    .fragments-list { grid-column: 1 / span 16 !important; }
    .data-viz-bars  { height: 90px; }
    .data-viz-circle { margin: 0 auto; }
    .data-viz-grid { max-width: 200px; }
    .fragment { grid-column: 1 / span 16 !important; transform: none !important; clip-path: none !important; }
    .kanji-assembler { width: 160px; height: 160px; }
    .kanji-assembler.is-assembled::after,
    .kanji-typer { font-size: 160px; }
    .page-footer { padding: 0 28px 0 64px; flex-direction: column; }
}

@media (max-width: 640px) {
    .progress-nav { width: 38px; padding: 16px 0; }
    .band { padding: 80px 20px 80px 48px; }
    .static-cell { display: none; }
    .grid-16 { grid-template-columns: 1fr; gap: 18px; }
    .glitch-heading { font-size: clamp(34px, 9vw, 60px); }
    .kanji-assembler { width: 120px; height: 120px; }
    .kanji-assembler.is-assembled::after,
    .kanji-typer { font-size: 120px; }
}

/* =============================================================
   Reduce-motion (still keep visuals; just slow animations)
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.05s !important;
    }
}