/**
 * BnK Labs — playground page (page-labs.php).
 * Frame styles for hero, rail, and lab sections; per-demo styles are
 * appended below in numbered blocks.
 */

/* Variable Inter for Lab 04 — @import must precede all rules */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@100..900&display=swap');

/* ── Tokens (match theme dark palette) ─────────────────────────────── */
.labs {
    --labs-bg: #0a0a0a;
    --labs-bg-2: #111111;
    --labs-text: #f5f5f5;
    --labs-dim: rgba(245, 245, 245, 0.55);
    --labs-faint: rgba(245, 245, 245, 0.3);
    --labs-line: rgba(245, 245, 245, 0.1);
    background: var(--labs-bg);
    color: var(--labs-text);
    overflow-x: clip;
}

/* ── Labs hero ─────────────────────────────────────────────────────── */
.labs-hero {
    min-height: 88vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 1.5rem 4rem;
    position: relative;
}

.labs-hero-inner {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.9s ease, transform 0.9s ease;
}

.labs-hero-inner.is-revealed {
    opacity: 1;
    transform: none;
}

.labs-hero-badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--labs-dim);
    border: 1px solid var(--labs-line);
    border-radius: 100px;
    margin-bottom: 1.75rem;
}

.labs-hero-title {
    font-size: clamp(3.5rem, 12vw, 9rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 1.25rem;
}

.labs-hero-sub {
    font-size: 1.0625rem;
    color: var(--labs-dim);
    max-width: 520px;
    margin: 0 auto;
}

.labs-hero-scroll {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 56px;
    overflow: hidden;
}

.labs-hero-scroll-line {
    display: block;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent, rgba(245, 245, 245, 0.6));
    animation: labs-scroll-drop 2s ease-in-out infinite;
}

@keyframes labs-scroll-drop {
    0% { transform: translateY(-100%); }
    60%, 100% { transform: translateY(100%); }
}

/* ── Progress rail ─────────────────────────────────────────────────── */
.labs-rail {
    position: fixed;
    right: 1.4rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    z-index: 50;
}

.labs-rail-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(245, 245, 245, 0.18);
    transition: background 0.25s ease, transform 0.25s ease;
}

.labs-rail-dot:hover { background: rgba(245, 245, 245, 0.55); }

.labs-rail-dot.is-active {
    background: #ffffff;
    transform: scale(1.45);
}

@media (max-width: 900px) {
    .labs-rail { display: none; }
}

/* ── Lab section frame ─────────────────────────────────────────────── */
.lab {
    padding: 7rem 1.5rem;
    border-top: 1px solid rgba(245, 245, 245, 0.06);
    position: relative;
}

.lab-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.lab-head {
    max-width: 1200px;
    margin: 0 auto 3rem;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.lab-head.is-revealed {
    opacity: 1;
    transform: none;
}

.lab-head-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.1rem;
}

.lab-num {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    color: var(--labs-faint);
    font-variant-numeric: tabular-nums;
}

.lab-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.lab-tag {
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--labs-dim);
    border: 1px solid var(--labs-line);
    border-radius: 100px;
    padding: 0.2rem 0.65rem;
}

.lab-title {
    font-size: clamp(1.6rem, 3.4vw, 2.4rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 0.7rem;
}

.lab-desc {
    font-size: 1rem;
    color: var(--labs-dim);
    max-width: 640px;
}

/* Demo stage — every lab renders inside one of these */
.lab-stage {
    max-width: 1200px;
    margin: 0 auto;
    border: 1px solid var(--labs-line);
    border-radius: 18px;
    background: var(--labs-bg-2);
    overflow: hidden;
    position: relative;
    min-height: 420px;
}

.lab-stage--tall { min-height: 560px; }
.lab-stage--bare {
    border: none;
    background: none;
    border-radius: 0;
    max-width: none;
    overflow: visible;
}

@media (max-width: 768px) {
    .lab { padding: 4.5rem 1rem; }
    .lab-stage { min-height: 340px; }
    .lab-stage--tall { min-height: 440px; }
}

@media (prefers-reduced-motion: reduce) {
    .labs *, .labs *::before, .labs *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   Per-lab styles — numbered blocks (Lab 01 … 20).
   ═══════════════════════════════════════════════════════════════════ */

/* ── Shared demo bits ──────────────────────────────────────────────── */
.lab-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

.lab-hint {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--labs-faint);
    pointer-events: none;
    z-index: 4;
}

.lab-hint--center {
    top: 50%;
    bottom: auto;
    transform: translate(-50%, -50%);
}

.lab-btn {
    font-family: inherit;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: var(--labs-dim);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--labs-line);
    border-radius: 100px;
    padding: 0.4rem 1rem;
    cursor: pointer;
    transition: color 0.2s ease, background 0.2s ease;
}

.lab-btn:hover { color: #fff; background: rgba(255, 255, 255, 0.1); }

/* ── Hero marquee (velocity-reactive) ──────────────────────────────── */
.labs-marquee {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    overflow: hidden;
    padding: 1rem 0 1.2rem;
    border-top: 1px solid rgba(245, 245, 245, 0.05);
    pointer-events: none;
}

.labs-marquee-track {
    display: inline-flex;
    white-space: nowrap;
    will-change: transform;
}

.labs-marquee-seg {
    font-size: clamp(1.4rem, 3.4vw, 2.4rem);
    font-weight: 600;
    letter-spacing: -0.01em;
    color: transparent;
    -webkit-text-stroke: 1px rgba(245, 245, 245, 0.22);
    padding-right: 0.5em;
}

/* ── 01 · Liquid Ripple / 02 · Flowing Gradient ────────────────────── */
#ripple-canvas, #flow-gradient-canvas { cursor: crosshair; }

.lab-stage .webgl-fallback {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 40%, #1c1c22, #0a0a0a 70%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--labs-faint);
    font-size: 0.85rem;
}

/* ── 04 · Gravity Type ─────────────────────────────────────────────── */
.lab-stage:has(.gravity-type) { display: flex; align-items: center; justify-content: center; }

.gravity-type {
    padding: 3rem 1.5rem;
    text-align: center;
    width: 100%;
}

.gravity-line {
    font-family: 'Inter', sans-serif;
    font-size: clamp(1.4rem, 4.4vw, 3.4rem);
    line-height: 1.25;
    letter-spacing: 0.02em;
    color: #fff;
    margin: 0.2em 0;
    cursor: default;
}

.gravity-line .gt-char {
    font-variation-settings: 'wght' var(--w, 300);
    display: inline-block;
    white-space: pre;
}

/* ── 05 · Decode ───────────────────────────────────────────────────── */
.lab-stage:has(.decode-wrap) { display: flex; align-items: center; justify-content: center; }

.decode-wrap {
    font-size: clamp(1.5rem, 4vw, 2.8rem);
    font-weight: 600;
    letter-spacing: -0.01em;
    padding: 3rem 1.5rem;
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    justify-content: center;
}

.decode-prefix { color: var(--labs-dim); }

.decode-target {
    color: #fff;
    font-variant-numeric: tabular-nums;
    min-height: 1.3em;
}

.decode-target .dc-junk { color: rgba(245, 245, 245, 0.35); }

.decode-caret {
    width: 2px;
    height: 0.95em;
    background: #fff;
    margin-left: 0.12em;
    align-self: center;
    animation: dc-blink 1.05s steps(1) infinite;
}

@keyframes dc-blink { 50% { opacity: 0; } }

/* ── 06 · Text-Reveal-Suite ────────────────────────────────────────── */
.reveal-suite {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--labs-line);
    min-height: 100%;
    position: absolute;
    inset: 0;
}

.reveal-panel {
    background: var(--labs-bg-2);
    padding: 2.4rem 2rem 4.4rem;
    position: relative;
}

.reveal-panel--wide { grid-column: 1 / -1; }

.reveal-label {
    display: block;
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--labs-faint);
    margin-bottom: 1.4rem;
}

.reveal-demo {
    font-size: clamp(1.3rem, 2.6vw, 2rem);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.015em;
}

.reveal-replay {
    position: absolute;
    bottom: 1.4rem;
    left: 2rem;
}

/* A: line mask (spans injected by JS) */
.rv-mask { display: block; overflow: hidden; }
.rv-line {
    display: block;
    transform: translateY(115%);
    transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
    transition-delay: calc(var(--i) * 90ms);
}
.is-played .rv-line { transform: translateY(0); }

/* B: blur focus (word spans injected by JS) */
.rv-word {
    display: inline-block;
    filter: blur(10px);
    opacity: 0;
    transition: filter 0.7s ease, opacity 0.7s ease;
    transition-delay: calc(var(--i) * 70ms);
}
.is-played .rv-word { filter: blur(0); opacity: 1; }

/* C: scroll fill */
.reveal-fill {
    font-size: clamp(1.15rem, 2.2vw, 1.7rem);
    font-weight: 500;
    line-height: 1.55;
    max-width: 900px;
    background: linear-gradient(90deg, #ffffff var(--fill, 0%), rgba(245, 245, 245, 0.18) var(--fill, 0%));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

@media (max-width: 768px) {
    .reveal-suite { grid-template-columns: 1fr; position: relative; }
}

/* ── 07 · Warp Tunnel ──────────────────────────────────────────────── */
.lab--scrolly { padding-bottom: 0; }

.warp-outer { height: 320vh; position: relative; }

.warp-sticky {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    align-items: stretch;
}

.warp-stage { flex: 1; position: relative; background: #050507; overflow: hidden; }

.warp-caption {
    position: absolute;
    left: 50%;
    bottom: 14%;
    transform: translate(-50%, 16px);
    font-size: clamp(1rem, 2.4vw, 1.6rem);
    font-weight: 500;
    color: rgba(245, 245, 245, 0.85);
    opacity: 0;
    transition: opacity 0.5s ease, transform 0.5s ease;
    pointer-events: none;
    text-align: center;
}

.warp-caption.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ── 08 · Pure-CSS Scrollytelling ──────────────────────────────────── */
.story-outer {
    height: 280vh;
    position: relative;
    view-timeline: --bnk-story block;
}

.story-sticky {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--labs-bg);
}

.story-media {
    width: 100%;
    height: 100%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.story-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.story-caption {
    position: absolute;
    left: 50%;
    bottom: 9%;
    transform: translateX(-50%);
    text-align: center;
    display: grid;
    gap: 0.3rem;
    opacity: 0;
}

.story-caption-num {
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--labs-faint);
}

.story-caption-text { font-size: 1.05rem; color: var(--labs-dim); }
.story-caption-text code { font-family: ui-monospace, monospace; font-size: 0.9em; color: #fff; }

.story-fallback {
    display: none;
    text-align: center;
    color: var(--labs-faint);
    font-size: 0.85rem;
    padding: 1.5rem;
}

@supports (animation-timeline: view()) {
    @keyframes story-shrink {
        0% { clip-path: inset(0 0 0 0 round 0); transform: scale(1); }
        100% { clip-path: inset(12% 22% 18% 22% round 26px); transform: scale(1); }
    }
    @keyframes story-caption-in {
        0%, 55% { opacity: 0; transform: translateX(-50%) translateY(20px); }
        80%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    }
    .story-media {
        animation: story-shrink linear both;
        animation-timeline: --bnk-story;
        animation-range: 15% 70%;
    }
    .story-caption {
        animation: story-caption-in linear both;
        animation-timeline: --bnk-story;
        animation-range: 15% 85%;
    }
}

@supports not (animation-timeline: view()) {
    .story-outer { height: auto; }
    .story-sticky { position: relative; height: 70vh; }
    .story-media { clip-path: inset(8% 14% 12% 14% round 26px); }
    .story-caption { opacity: 1; }
    .story-fallback { display: block; }
}

/* ── 09 · Horizontal Drift ─────────────────────────────────────────── */
.hdrift-outer { height: 380vh; position: relative; }

.hdrift-sticky {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hdrift-track {
    display: flex;
    gap: 3vw;
    padding: 0 8vw;
    will-change: transform;
    align-items: center;
}

.hdrift-panel {
    flex: 0 0 auto;
    width: min(56vw, 720px);
    aspect-ratio: 16 / 10;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--labs-line);
    position: relative;
    background: var(--labs-bg-2);
}

.hdrift-panel img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    display: block;
    filter: saturate(0.9);
}

.hdrift-name {
    position: absolute;
    left: 1.2rem;
    bottom: 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.35rem 0.9rem;
    background: rgba(10, 10, 10, 0.72);
    border-radius: 100px;
    backdrop-filter: blur(8px);
}

.hdrift-panel--title {
    border: none;
    background: none;
    width: min(44vw, 560px);
    display: flex;
    align-items: center;
}

.hdrift-panel--title span {
    font-size: clamp(2.4rem, 6.5vw, 5rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
}

/* ── 10 · Card Stack ───────────────────────────────────────────────── */
.stack-wrap {
    max-width: 760px;
    margin: 0 auto;
    padding-bottom: 12vh;
}

.stack-card {
    position: sticky;
    top: calc(14vh + var(--card-i) * 2.6rem);
    background: #16161a;
    border: 1px solid rgba(245, 245, 245, 0.12);
    border-radius: 22px;
    padding: 3rem 2.6rem 3.4rem;
    margin-bottom: 8vh;
    transform-origin: center top;
    box-shadow: 0 -18px 50px rgba(0, 0, 0, 0.45);
}

.stack-num {
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    color: var(--labs-faint);
    display: block;
    margin-bottom: 1rem;
}

.stack-card h3 {
    font-size: clamp(1.5rem, 3vw, 2.1rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 0.6rem;
}

.stack-card p { color: var(--labs-dim); max-width: 480px; }

/* ── 11 · Image Trail ──────────────────────────────────────────────── */
#trail-stage { cursor: crosshair; }

.trail-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: clamp(2.2rem, 6vw, 4.4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: rgba(245, 245, 245, 0.14);
    pointer-events: none;
}

.trail-img {
    position: absolute;
    width: 220px;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    object-position: top;
    border-radius: 12px;
    pointer-events: none;
    will-change: transform, opacity;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* ── 12 · Spotlight ────────────────────────────────────────────────── */
.spotlight-stage { cursor: none; }

.spotlight-under {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #101014;
}

.spotlight-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(245, 245, 245, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245, 245, 245, 0.07) 1px, transparent 1px);
    background-size: 44px 44px;
}

.spotlight-words {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, auto);
    gap: 1.4rem 3rem;
    text-align: center;
}

.spotlight-words span {
    font-size: clamp(1.2rem, 2.6vw, 2rem);
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #fff;
}

.spotlight-over {
    position: absolute;
    inset: 0;
    background: var(--labs-bg-2);
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-mask-image: radial-gradient(circle 150px at var(--mx, 50%) var(--my, 50%), transparent 0 96px, black 150px);
    mask-image: radial-gradient(circle 150px at var(--mx, 50%) var(--my, 50%), transparent 0 96px, black 150px);
}

.spotlight-teaser {
    text-align: center;
    font-size: clamp(1.2rem, 2.6vw, 1.9rem);
    font-weight: 600;
    line-height: 1.4;
}

.spotlight-teaser span { color: var(--labs-dim); font-size: 0.72em; font-weight: 400; }

/* ── 13 · Micro-Interactions ───────────────────────────────────────── */
.micro-stage {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: none;
}

.micro-cursor {
    position: absolute;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #fff;
    mix-blend-mode: difference;
    pointer-events: none;
    z-index: 10;
    transform: translate(-50%, -50%);
    transition: width 0.25s ease, height 0.25s ease;
    opacity: 0;
}

.micro-stage:hover .micro-cursor { opacity: 1; }
.micro-cursor.is-big { width: 64px; height: 64px; }

.micro-row {
    display: flex;
    gap: 2.2rem;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
    padding: 3rem 1.5rem;
}

.micro-btn {
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    color: #fff;
    background: none;
    border: 1px solid rgba(245, 245, 245, 0.25);
    border-radius: 100px;
    padding: 1rem 2.2rem;
    cursor: none;
    position: relative;
    overflow: hidden;
    will-change: transform;
}

.micro-btn--elastic { transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1); }
.micro-btn--elastic:hover { transform: scale(1.12) rotate(-1.5deg); }

.micro-goo-fill {
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
    pointer-events: none;
}

.micro-btn--goo:hover .micro-goo-fill { transform: translate(-50%, -50%) scale(24); }

.micro-goo-label { position: relative; z-index: 1; transition: color 0.3s ease; }
.micro-btn--goo:hover .micro-goo-label { color: #0a0a0a; }

.micro-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--labs-dim);
    text-decoration: none;
    cursor: none;
    will-change: transform;
    transition: color 0.25s ease;
}

.micro-link:hover { color: #fff; }

/* ── 17 · Aurora & Grain ───────────────────────────────────────────── */
.aurora-stage { background: #0b0b10; }

.aurora-blob {
    position: absolute;
    width: 55%;
    aspect-ratio: 1;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.82;
    will-change: transform;
}

.aurora-blob--1 {
    background: radial-gradient(circle, #24304d, transparent 65%);
    top: -18%;
    left: -8%;
    animation: aurora-drift-1 10s ease-in-out infinite alternate;
}

.aurora-blob--2 {
    background: radial-gradient(circle, #3d2a4e, transparent 65%);
    bottom: -22%;
    right: -6%;
    animation: aurora-drift-2 13s ease-in-out infinite alternate;
}

.aurora-blob--3 {
    background: radial-gradient(circle, #1d3a38, transparent 65%);
    top: 28%;
    left: 38%;
    width: 42%;
    animation: aurora-drift-3 8s ease-in-out infinite alternate;
}

@keyframes aurora-drift-1 { to { transform: translate(36%, 26%) scale(1.25); } }
@keyframes aurora-drift-2 { to { transform: translate(-30%, -24%) scale(0.82); } }
@keyframes aurora-drift-3 { to { transform: translate(-26%, 30%) scale(1.35); } }

@media (max-width: 768px) {
    .aurora-blob { filter: blur(54px); }
}

.aurora-grain {
    position: absolute;
    inset: -60%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
    opacity: 0.07;
    animation: aurora-grain-jitter 0.6s steps(4) infinite;
    pointer-events: none;
}

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

.aurora-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    text-align: center;
    padding: 1.5rem;
}

.aurora-content span {
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--labs-faint);
}

.aurora-content h3 {
    font-size: clamp(1.5rem, 3.2vw, 2.4rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    max-width: 560px;
}

/* ── 18 · Bento Expansion ──────────────────────────────────────────── */
.bento {
    display: grid;
    grid-template-columns: var(--c0, 1fr) var(--c1, 1fr) var(--c2, 1fr);
    grid-auto-rows: 220px;
    gap: 0.9rem;
    max-width: 1200px;
    margin: 0 auto;
    transition: grid-template-columns 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.bento-cell {
    position: relative;
    border-radius: 18px;
    background: var(--labs-bg-2);
    border: 1px solid var(--labs-line);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 0.3rem;
    padding: 1.6rem;
    overflow: hidden;
}

.bento-cell::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(360px circle at var(--gx, 50%) var(--gy, 50%), rgba(255, 255, 255, 0.09), transparent 55%);
    opacity: 0;
    transition: opacity 0.35s ease;
    pointer-events: none;
}

.bento-cell:hover::before { opacity: 1; }

.bento-kpi {
    font-size: clamp(2rem, 4.4vw, 3.4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1;
}

.bento-sub { color: var(--labs-dim); font-size: 0.9rem; }

@media (max-width: 768px) {
    .bento { grid-template-columns: 1fr 1fr; grid-auto-rows: 160px; }
}

/* ── 19 · Circle Reveal ────────────────────────────────────────────── */
.circle-stage { cursor: pointer; min-height: 480px; }

.circle-layer {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-align: center;
    padding: 1.5rem;
}

.circle-layer h3 {
    font-size: clamp(1.6rem, 3.4vw, 2.6rem);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.circle-layer p { color: inherit; opacity: 0.6; }

.circle-badge {
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    border: 1px solid currentColor;
    border-radius: 100px;
    padding: 0.28rem 0.9rem;
    opacity: 0.55;
    margin-bottom: 0.8rem;
}

.circle-layer--dark { background: var(--labs-bg-2); color: #f5f5f5; }

.circle-layer--light {
    background: #ececec;
    color: #0a0a0a;
    clip-path: circle(0px at 50% 50%);
    transition: clip-path 0.85s cubic-bezier(0.65, 0, 0.35, 1);
}

/* ── 20 · Infinite Canvas ──────────────────────────────────────────── */
.infinite-stage {
    cursor: grab;
    touch-action: none;
    background: #0c0c0f;
}

.infinite-stage.is-dragging { cursor: grabbing; }

.infinite-plane {
    position: absolute;
    inset: 0;
    will-change: transform;
}

.inf-card {
    position: absolute;
    width: 240px;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid rgba(245, 245, 245, 0.12);
    background: var(--labs-bg-2);
    pointer-events: none;
    will-change: transform;
}

.inf-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    object-position: top;
    display: block;
    filter: saturate(0.85);
}

.inf-card--label {
    padding: 1.1rem 1.2rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--labs-dim);
    background: none;
    border-style: dashed;
}

/* ═══════════════════════════════════════════════════════════════════
   Labs 21–40 (second batch)
   ═══════════════════════════════════════════════════════════════════ */

/* ── 23 · Hover distortion ─────────────────────────────────────────── */
.distort-row {
    position: absolute;
    /* unten Platz fuer den .lab-hint — er lag sonst auf den Kachel-Labels */
    inset: 0 0 2.4rem 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--labs-line);
}

.distort-item {
    position: relative;
    overflow: hidden;
    background: var(--labs-bg-2);
    cursor: pointer;
}

.distort-item canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

.distort-item span {
    position: absolute;
    left: 1rem;
    bottom: 0.85rem;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(245, 245, 245, 0.7);
    background: rgba(10, 10, 10, 0.6);
    padding: 0.25rem 0.7rem;
    border-radius: 100px;
    pointer-events: none;
}

@media (max-width: 720px) {
    .distort-row { grid-template-columns: 1fr; }
}

/* ── 24 · Liquid type ──────────────────────────────────────────────── */
#liquidtype-canvas { cursor: crosshair; }

/* ── 26 · Digital rain ─────────────────────────────────────────────── */
#rain-canvas { background: #060607; }

/* ── 28 · Glitch type ──────────────────────────────────────────────── */
.lab-stage:has(.glitch-wrap) { display: flex; align-items: center; justify-content: center; }

.glitch-wrap {
    text-align: center;
    padding: 3rem 1rem;
    display: grid;
    gap: 0.6rem;
}

.glitch {
    position: relative;
    display: inline-block;
    font-size: clamp(1.6rem, 4.6vw, 3.6rem);
    font-weight: 700;
    letter-spacing: 0.04em;
    color: #f5f5f5;
}

.glitch--sub { font-size: clamp(1rem, 2.6vw, 1.9rem); color: rgba(245, 245, 245, 0.55); }

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
}

.glitch.is-glitching::before {
    opacity: 0.9;
    color: #4de3ff;
    transform: translate(-3px, -1px);
    clip-path: inset(12% 0 58% 0);
    animation: glitch-slice-a 0.32s steps(3) both;
}

.glitch.is-glitching::after {
    opacity: 0.9;
    color: #ff4d6d;
    transform: translate(3px, 1px);
    clip-path: inset(55% 0 18% 0);
    animation: glitch-slice-b 0.32s steps(3) both;
}

@keyframes glitch-slice-a {
    0% { clip-path: inset(8% 0 66% 0); transform: translate(-4px, -2px); }
    50% { clip-path: inset(38% 0 30% 0); transform: translate(3px, 1px); }
    100% { clip-path: inset(70% 0 6% 0); transform: translate(-2px, 2px); }
}

@keyframes glitch-slice-b {
    0% { clip-path: inset(62% 0 12% 0); transform: translate(4px, 2px); }
    50% { clip-path: inset(20% 0 55% 0); transform: translate(-3px, -1px); }
    100% { clip-path: inset(4% 0 78% 0); transform: translate(2px, -2px); }
}

/* ── 29 · Text on path ─────────────────────────────────────────────── */
.pathtext-outer { height: 260vh; position: relative; }

.pathtext-sticky {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    align-items: center;
}

.pathtext-svg { width: 100%; height: min(72vh, 640px); }

.pathtext-text {
    font-size: 44px;
    font-weight: 700;
    letter-spacing: 0.06em;
    fill: #f5f5f5;
}

/* ── 30 · Story line ───────────────────────────────────────────────── */
.storyline-wrap {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 1rem;
    padding: 2rem 1.5rem 4rem;
}

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

.storyline-items {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 22vh;
    padding-top: 8vh;
    padding-bottom: 8vh;
}

.storyline-item {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.storyline-item.is-on { opacity: 1; transform: none; }

.storyline-year {
    display: inline-block;
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--labs-faint);
    border: 1px solid var(--labs-line);
    border-radius: 100px;
    padding: 0.25rem 0.8rem;
    margin-bottom: 0.7rem;
}

.storyline-item p {
    font-size: 1.15rem;
    font-weight: 500;
    max-width: 480px;
    line-height: 1.5;
}

/* ── 31 · Type cylinder ────────────────────────────────────────────── */
.lab-stage:has(.cylinder-scene) { overflow: hidden; }

.cylinder-scene {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 900px;
}

.cylinder {
    position: relative;
    transform-style: preserve-3d;
    height: 1em;
    font-size: clamp(2rem, 5.4vw, 4rem);
}

.cyl-word {
    position: absolute;
    left: 50%;
    top: 50%;
    transform-origin: center;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #f5f5f5;
    white-space: nowrap;
    backface-visibility: hidden;
}

/* ── 32 · Masked cinema ────────────────────────────────────────────── */
.cinema-wrap {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #060607;
}

.cinema-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 800 450'%3E%3Ctext x='400' y='260' font-family='Inter,Arial,sans-serif' font-size='230' font-weight='800' text-anchor='middle'%3EBnK%3C/text%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 800 450'%3E%3Ctext x='400' y='260' font-family='Inter,Arial,sans-serif' font-size='230' font-weight='800' text-anchor='middle'%3EBnK%3C/text%3E%3C/svg%3E");
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    -webkit-mask-size: contain;
    mask-size: contain;
}

/* ── 33 · Tile reveal ──────────────────────────────────────────────── */
.tilereveal-row {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding: 1.6rem 1.6rem 4.4rem;
}

.tilereveal {
    position: relative;
    margin: 0;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--labs-line);
}

.tilereveal img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    display: block;
}

.tilereveal-label {
    position: absolute;
    left: 0.9rem;
    bottom: 0.7rem;
    z-index: 3;
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(245, 245, 245, 0.75);
    background: rgba(10, 10, 10, 0.65);
    padding: 0.22rem 0.7rem;
    border-radius: 100px;
}

.tilereveal .tr-cover {
    position: absolute;
    background: var(--labs-bg-2);
    z-index: 2;
    transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.55s ease;
}

.tilereveal[data-mode="blinds"] .tr-cover { transform-origin: top; }
.tilereveal.is-open[data-mode="blinds"] .tr-cover { transform: scaleY(0); }

.tilereveal[data-mode="tiles"] .tr-cover { transition-property: opacity, transform; }
.tilereveal.is-open[data-mode="tiles"] .tr-cover { opacity: 0; transform: scale(0.7); }

.tilereveal-replay {
    position: absolute;
    bottom: 1.2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 4;
}

@media (max-width: 720px) {
    .tilereveal-row { grid-template-columns: 1fr; }
}

/* ── 34 · Morph lightbox ───────────────────────────────────────────── */
#morph-stage { min-height: 480px; }

.morph-grid {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.9rem;
    padding: 1.6rem;
    align-items: center;
}

.morph-thumb {
    border: 1px solid var(--labs-line);
    border-radius: 12px;
    overflow: hidden;
    padding: 0;
    background: none;
    cursor: zoom-in;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.morph-thumb:hover { transform: translateY(-4px); border-color: rgba(245, 245, 245, 0.3); }

.morph-thumb img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    object-position: top;
    display: block;
}

.morph-overlay[hidden] { display: none; }

.morph-overlay {
    position: absolute;
    inset: 0;
    z-index: 6;
    background: rgba(8, 8, 8, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
}

.morph-overlay img {
    max-width: 86%;
    max-height: 82%;
    border-radius: 14px;
    border: 1px solid rgba(245, 245, 245, 0.2);
}

.morph-close {
    position: absolute;
    top: 1rem;
    right: 1.2rem;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    color: var(--labs-dim);
}

.morph-anim {
    view-transition-name: bnk-morph;
}

@media (max-width: 720px) {
    .morph-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── 35 · FLIP filter ──────────────────────────────────────────────── */
#flip-stage { min-height: 560px; }

.flip-controls {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    padding: 1.4rem 0 0.4rem;
    position: relative;
    z-index: 2;
}

.flip-controls .lab-btn.is-active { color: #0a0a0a; background: #f5f5f5; border-color: #f5f5f5; }

.flip-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.9rem;
    padding: 1.2rem 1.6rem 1.8rem;
}

.flip-card {
    margin: 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--labs-line);
    background: var(--labs-bg);
    will-change: transform;
}

.flip-card.is-hidden { display: none; }

.flip-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    object-position: top;
    display: block;
}

.flip-card figcaption {
    padding: 0.6rem 0.9rem;
    font-size: 0.78rem;
    color: var(--labs-dim);
}

@media (max-width: 720px) {
    .flip-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── 36 · Fluid accordion ──────────────────────────────────────────── */
.lab-stage:has(.fluidacc) { display: flex; align-items: center; }

.fluidacc {
    width: min(720px, 100%);
    margin: 0 auto;
    padding: 2.4rem 1.6rem;
    display: grid;
    gap: 0.7rem;
}

.fluidacc-item {
    border: 1px solid var(--labs-line);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.02);
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.fluidacc-item[open] { border-color: rgba(245, 245, 245, 0.25); }

.fluidacc-item summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.1rem 1.3rem;
    font-weight: 600;
    font-size: 1rem;
}

.fluidacc-item summary::-webkit-details-marker { display: none; }

.fluidacc-icon {
    position: relative;
    width: 14px;
    height: 14px;
    flex: 0 0 auto;
}

.fluidacc-icon::before,
.fluidacc-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    margin: auto;
    background: rgba(245, 245, 245, 0.6);
    transition: transform 0.35s ease;
}

.fluidacc-icon::before { width: 14px; height: 1.5px; }
.fluidacc-icon::after { width: 1.5px; height: 14px; }
.fluidacc-item[open] .fluidacc-icon::after { transform: rotate(90deg); }

.fluidacc-body { padding: 0 1.3rem; overflow: hidden; }
.fluidacc-body p { color: var(--labs-dim); font-size: 0.92rem; line-height: 1.6; padding-bottom: 1.2rem; }

/* ── 37 · Compare slider ───────────────────────────────────────────── */
#compare-stage { cursor: ew-resize; }

.compare-wrap {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.compare-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

.compare-before {
    position: absolute;
    inset: 0;
    width: var(--pos, 50%);
    overflow: hidden;
}

.compare-before .compare-img {
    width: auto;
    min-width: 100%;
    filter: invert(1) hue-rotate(180deg) saturate(0.5) contrast(0.92);
}

.compare-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: var(--pos, 50%);
    width: 2px;
    background: rgba(245, 245, 245, 0.85);
    pointer-events: none;
}

.compare-handle span {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1.5px solid rgba(245, 245, 245, 0.85);
    background: rgba(10, 10, 10, 0.65);
    backdrop-filter: blur(4px);
}

.compare-handle span::before {
    content: '⟷';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.95rem;
}

/* ── 38 · Snap chapters ────────────────────────────────────────────── */
.snap-container {
    position: absolute;
    inset: 0;
    overflow-y: auto;
    scroll-snap-type: y mandatory;
    overscroll-behavior: contain;
    scrollbar-width: none;
}

.snap-container::-webkit-scrollbar { display: none; }

.snap-chapter {
    height: 100%;
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-align: center;
    padding: 1.5rem;
    border-bottom: 1px solid rgba(245, 245, 245, 0.06);
}

.snap-num {
    font-size: 0.9rem;
    letter-spacing: 0.3em;
    color: var(--labs-faint);
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease 0.1s, transform 0.6s ease 0.1s;
}

.snap-chapter h3 {
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    opacity: 0;
    transform: translateY(24px) scale(0.96);
    transition: opacity 0.65s ease 0.2s, transform 0.65s ease 0.2s;
}

.snap-chapter p {
    color: var(--labs-dim);
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease 0.32s, transform 0.6s ease 0.32s;
}

.snap-chapter.is-in .snap-num,
.snap-chapter.is-in h3,
.snap-chapter.is-in p {
    opacity: 1;
    transform: none;
}

/* ── 39 · Ember trail ──────────────────────────────────────────────── */
#ember-canvas { background: #070605; cursor: crosshair; }

/* ── 40 · Inversion lens ───────────────────────────────────────────── */
#lens-stage {
    cursor: none;
    background: #101013;
}

.lens-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}

.lens-content p {
    font-size: clamp(2rem, 6vw, 4.4rem);
    font-weight: 800;
    letter-spacing: 0.02em;
    line-height: 1.08;
    color: #ececec;
}

.lens {
    position: absolute;
    width: 170px;
    height: 170px;
    border-radius: 50%;
    border: 1.5px solid rgba(245, 245, 245, 0.5);
    backdrop-filter: invert(1) hue-rotate(180deg);
    -webkit-backdrop-filter: invert(1) hue-rotate(180deg);
    transform: translate(-50%, -50%);
    pointer-events: none;
    top: 50%;
    left: 50%;
}