/* ═══════════════════════════════════════════════════
   RAN SONG — field-of-study inspired
   ═══════════════════════════════════════════════════ */

/* ── RESET ──────────────────────────────────────────*/
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root,
html[data-theme='light'] {
  color-scheme: light;
  --surface: #ffffff;
  --surface-warm: #f5f3ef;
  --elevated: #f8f6f4;
  --text: #000000;
  --border: #000000;
  --divider-soft: rgba(0, 0, 0, 0.08);
  --divider-faint: rgba(0, 0, 0, 0.06);
  --divider: rgba(0, 0, 0, 0.1);
  --divider-strong: rgba(0, 0, 0, 0.15);
  --muted-fill: rgba(0, 0, 0, 0.025);
  --active-fill: rgba(0, 0, 0, 0.03);
  --rail-glow: rgba(0, 0, 0, 0.03);
  --frame: rgba(26, 23, 20, 0.08);
  --frame-line: rgba(26, 23, 20, 0.1);
  --fill-warm: rgba(26, 23, 20, 0.04);
  --invert-bg: #000000;
  --invert-fg: #ffffff;
  --on-dark-ui: #ffffff;
  --particle-ink: #000000;
  --home-bg-particle: rgba(0, 0, 0, 0.22);
  --focus-ring: rgba(0, 0, 0, 0.35);
  --visited-strike: rgba(0, 0, 0, 0.35);
  --scrub-track: rgba(0, 0, 0, 0.12);
  --vol-track: #c6c6c8;
  --tag-build-border: #3a6db5;
  --tag-build-color: #1f4f8f;
  --tag-build-fill: rgba(31, 79, 143, 0.1);
  --tag-design-border: #2d9460;
  --tag-design-color: #1a6b42;
  --tag-design-fill: rgba(26, 107, 66, 0.1);
  --tag-strategy-border: #a67c1a;
  --tag-strategy-color: #7a5a0a;
  --tag-strategy-fill: rgba(122, 90, 10, 0.1);
  --tag-field-border: rgba(0, 0, 0, 0.38);
  --tag-field-color: rgba(0, 0, 0, 0.62);
  --tag-field-fill: rgba(0, 0, 0, 0.07);
}

html[data-theme='dark'] {
  color-scheme: dark;
  --surface: #131315;
  --surface-warm: #1a1a1d;
  --elevated: #1b1b1f;
  --text: #eae8e5;
  --border: #eae8e5;
  --divider-soft: rgba(255, 255, 255, 0.09);
  --divider-faint: rgba(255, 255, 255, 0.065);
  --divider: rgba(255, 255, 255, 0.12);
  --divider-strong: rgba(255, 255, 255, 0.2);
  --muted-fill: rgba(255, 255, 255, 0.06);
  --active-fill: rgba(255, 255, 255, 0.085);
  --rail-glow: rgba(255, 255, 255, 0.05);
  --frame: rgba(236, 232, 226, 0.1);
  --frame-line: rgba(236, 232, 226, 0.14);
  --fill-warm: rgba(236, 232, 226, 0.08);
  --invert-bg: #e9e7e4;
  --invert-fg: #121214;
  --on-dark-ui: #ffffff;
  --particle-ink: #f2f0ec;
  --home-bg-particle: rgba(255, 255, 255, 0.18);
  --focus-ring: rgba(255, 255, 255, 0.38);
  --visited-strike: rgba(255, 255, 255, 0.42);
  --scrub-track: rgba(255, 255, 255, 0.16);
  --vol-track: #45454c;
  --tag-build-border: rgba(120, 168, 240, 0.4);
  --tag-build-color: rgba(160, 200, 255, 0.92);
  --tag-build-fill: rgba(120, 168, 240, 0.12);
  --tag-design-border: rgba(100, 200, 140, 0.4);
  --tag-design-color: rgba(140, 220, 170, 0.92);
  --tag-design-fill: rgba(100, 200, 140, 0.1);
  --tag-strategy-border: rgba(220, 180, 100, 0.45);
  --tag-strategy-color: rgba(240, 210, 140, 0.92);
  --tag-strategy-fill: rgba(220, 180, 100, 0.1);
  --tag-field-border: rgba(255, 255, 255, 0.22);
  --tag-field-color: rgba(234, 232, 229, 0.72);
  --tag-field-fill: rgba(255, 255, 255, 0.06);
}

html, body { height: 100vh; overflow: hidden; }
body {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 13px; line-height: 1.55;
  background: var(--surface); color: var(--text);
  -webkit-font-smoothing: antialiased;
}
body, body * { cursor: none; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
button { font-family: inherit; background: none; border: none; padding: 0; }
img { display: block; }

/* ── GRAIN ──────────────────────────────────────────*/
body::after {
  content: ''; position: fixed; inset: 0;
  pointer-events: none; z-index: 9990; opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ── CURSOR — two equal dots: merge at rest, stretch when moving ──*/
#cursor, #cursor2 {
  position: fixed; top: 0; left: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none; z-index: 9999; opacity: 0;
}
#cursor  {
  background: rgba(74, 72, 70, 0.55);
  transition: opacity 0.1s;
}
#cursor2 {
  background: transparent;
  border: 2px solid rgba(74, 72, 70, 0.38);
  /* Lag: transitions position slowly so it trails behind cursor1 */
  transition: left 0.16s cubic-bezier(0.25,0.46,0.45,0.94),
              top  0.16s cubic-bezier(0.25,0.46,0.45,0.94),
              opacity 0.1s, border-color 0.2s;
}
/* ═══════════════════════════════════════════════════
   GLOBAL NAV
   ═══════════════════════════════════════════════════ */
.global-nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: 40px; z-index: 500;
  display: flex; align-items: stretch; overflow: hidden;
  background: var(--surface); border-bottom: 1px solid var(--border);
  font-size: 11px; letter-spacing: 0.04em;
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s;
}
.global-nav.visible { opacity: 1; pointer-events: all; }

.gnav-home {
  padding: 0 16px; border-right: 1px solid var(--border);
  display: flex; align-items: center; flex-shrink: 0;
  font-size: 10px; letter-spacing: 0.08em;
  color: var(--text); opacity: 1;
  transition: opacity 0.1s;
}
.gnav-home:hover { opacity: 0.52; }

.gnav-link {
  padding: 0 14px; border-right: 1px solid var(--divider);
  display: flex; align-items: center; flex: 1; min-width: 0;
  transition: opacity 0.1s; position: relative; white-space: nowrap;
  font-size: 10px;
  color: var(--text);
  opacity: 1;
}
.gnav-link:hover { opacity: 0.52; }
.gnav-link.active::after {
  content: ''; position: absolute; left: 14px; right: 14px; top: 50%;
  height: 1.5px; background: var(--border); pointer-events: none;
}

.gnav-tail {
  display: flex;
  align-items: stretch;
  flex-shrink: 0;
  margin-left: auto;
}

.gnav-theme-btn {
  display: flex;
  align-items: center;
  padding: 0 14px;
  flex-shrink: 0;
  font-family: inherit;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  opacity: 0.42;
  cursor: pointer;
  transition: opacity 0.12s ease;
  border-right: none;
}

.gnav-theme-btn:hover {
  opacity: 0.92;
}

.gnav-toggle {
  display: flex; align-items: center; gap: 10px;
  padding: 0 20px; flex-shrink: 0;
  border-left: 1px solid var(--divider);
}
.gnav-hidden { display: none !important; }

.vt-btn {
  font-family: inherit; font-size: 10px; letter-spacing: 0.02em;
  color: var(--text); opacity: 0.35; transition: opacity 0.1s;
}
.vt-btn:hover { opacity: 0.7; }
.vt-active    { opacity: 1 !important; }

/* ── STAGE + PANELS ──────────────────────────────────*/
.stage { position: fixed; inset: 0; overflow: hidden; }

.panel {
  position: absolute; inset: 0;
  z-index: 0;
  background: var(--surface); opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease;
}
.panel.panel--active {
  z-index: 3;
  opacity: 1;
  pointer-events: all;
}
.panel--scroll { overflow-y: auto; overflow-x: hidden; }

#panel-observer, #panel-builder,
#panel-player,  #panel-writing, #panel-about { top: 40px; }

.panel-body        { padding: 48px 40px 80px; max-width: 860px; }
.panel-body--about { max-width: 100%; display: grid; grid-template-columns: 1fr 1fr; }
.section-lead { font-size: 13px; line-height: 1.7; margin-bottom: 48px; opacity: 0.6; }

/* ── HOME ────────────────────────────────────────────*/
#panel-home {
  display: block;
  overflow: hidden;
  background: var(--surface);
}

html[data-theme='dark'] #panel-home {
  color: var(--text);
}

.home-shell {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 0;
}

.home-texture {
  position: absolute;
  inset: 0;
  isolation: isolate;
  overflow: hidden;
  pointer-events: auto;
  cursor: pointer !important;
  container-type: inline-size;
  container-name: home-grain;
  background-color: var(--surface);
}

/* Grain is rasterised into canvas background particles (see main.js) */
.home-texture::before {
  content: none;
}

.home-chrome {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
}

.home-chrome-top {
  position: absolute;
  top: clamp(16px, 2.5vh, 32px);
  right: clamp(20px, 3vw, 40px);
  pointer-events: auto;
}

.home-nav {
  position: absolute;
  top: var(--home-nav-top, 42vh);
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px clamp(14px, 2.8vw, 36px);
  pointer-events: auto;
  width: max-content;
  max-width: calc(100% - clamp(28px, 4.5vw, 56px) * 2);
}

#panel-home[data-home-nav-align='left'] .home-nav {
  left: var(--home-nav-left, clamp(28px, 4.5vw, 56px));
  right: auto;
  justify-content: flex-start;
}

#panel-home[data-home-nav-align='right'] .home-nav {
  left: auto;
  right: var(--home-nav-right, clamp(28px, 4.5vw, 56px));
  justify-content: flex-end;
}

.home-hero-hint {
  position: absolute;
  right: var(--home-nav-right, clamp(28px, 4.5vw, 56px));
  top: calc(var(--home-nav-top, 42vh) - 1.35rem);
  margin: 0;
  max-width: min(320px, 72vw);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  opacity: 0;
  pointer-events: none;
  text-align: right;
  transition: opacity 0.7s ease 2.2s;
}

#panel-home.home-hero-hint-on .home-hero-hint {
  opacity: 0.38;
}

#panel-home.home-nav-reveal .home-nav .nav-link {
  animation: homeNavReveal 0.55s ease backwards;
}

#panel-home.home-nav-reveal .home-nav .nav-link:nth-child(1) { animation-delay: 0.08s; }
#panel-home.home-nav-reveal .home-nav .nav-link:nth-child(2) { animation-delay: 0.14s; }
#panel-home.home-nav-reveal .home-nav .nav-link:nth-child(3) { animation-delay: 0.2s; }
#panel-home.home-nav-reveal .home-nav .nav-link:nth-child(4) { animation-delay: 0.26s; }
#panel-home.home-nav-reveal .home-nav .nav-link:nth-child(5) { animation-delay: 0.32s; }

@keyframes homeNavReveal {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.home-texture[data-hover-zone='ran'],
.home-texture[data-hover-zone='song'] {
  cursor: pointer !important;
}

.home-nav .nav-link {
  font-size: 13px;
  letter-spacing: 0.04em;
  display: inline-block;
  padding: 4px 0;
  border: none;
  transition: color 0.12s ease, opacity 0.12s ease;
  position: relative;
  opacity: 1;
  color: var(--text);
  white-space: nowrap;
}

#panel-home .home-nav .nav-link:hover {
  opacity: 0.72;
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

@media (prefers-reduced-motion: reduce) {
  .home-hero-hint {
    transition: none;
    opacity: 0.38;
  }

  #panel-home.home-nav-reveal .home-nav .nav-link {
    animation: none;
  }
}

.home-nav .nav-link:visited {
  color: var(--text);
  opacity: 1;
}

.home-nav .nav-link.visited::after {
  content: '';
  position: absolute;
  left: 0;
  top: calc(50% + 2px);
  width: 100%;
  height: 1px;
  background: var(--visited-strike);
  pointer-events: none;
}

.home-chrome .home-theme-btn {
  padding-left: 0;
  padding-right: 0;
}

.home-texture canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
}

/* Portrait — 4:3; JS pins top-right snug to oneself (above caps, clears glyphs) */
.home-portrait {
  position: absolute;
  width: clamp(88px, 11vw, 168px);
  aspect-ratio: 4 / 3;
  height: auto;
  object-fit: cover;
  object-position: 50% 38%;
  right: auto;
  bottom: auto;
  transform: none;
  opacity: 0;
  transition: opacity 0.55s ease;
  z-index: 12;
  pointer-events: none;
  mix-blend-mode: normal;
}
/* ── OBSERVER ────────────────────────────────────────*/
#panel-observer { display: flex; flex-direction: column; overflow: hidden; }
/* Mosaic GRID scrolls; carousel is framed (no outer scroll) */
.obs-view { flex: 1; min-height: 0; overflow: hidden; display: flex; flex-direction: column; }
.obs-view--off { display: none !important; }
.obs-view--mosaic {
  overflow-y: scroll;
  -webkit-overflow-scrolling: touch;
}
/* GRID — open-book spread: each page full bleed; images column-width (horizontal = full slab) */
.obs-flow-root {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: center;
  gap: clamp(28px, 5vw, 72px); /* gutter / 中缝 */
  padding: clamp(14px, 2.2vw, 28px) clamp(10px, 2vw, 28px) 48px;
  box-sizing: border-box;
  width: 100%;
}

.obs-flow-col {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* Stretch each card to column width on mobile; desktop spine-hug rules above */

.obs-flow-col--verso .obs-flow-card,
.obs-flow-col--recto .obs-flow-card {
  align-items: stretch;
  text-align: left;
}

.obs-flow-card {
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  margin-bottom: clamp(20px, 3.8vw, 56px);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Vertical stagger only — no horizontal translate (avoids cross-gutter overlap) */
  .obs-flow-col--verso .obs-flow-card:not(.obs-flow-card--wide),
  .obs-flow-col--recto .obs-flow-card:not(.obs-flow-card--wide) {
    align-self: stretch;
    width: 100%;
  }

  .obs-flow-card:not(.obs-flow-card--wide) .obs-flow-visual {
    width: 100%;
  }

  .obs-flow-card:not(.obs-flow-card--wide) .obs-flow-visual img {
    width: 100%;
    height: auto;
  }

  .obs-flow-col .obs-flow-card:nth-child(even) {
  margin-top: clamp(28px, 5.5vw, 72px);
}

/* Portrait / non-wide — inner edge kisses the gutter; outer edge floats */
.obs-flow-col--verso .obs-flow-card:not(.obs-flow-card--wide) {
  align-self: flex-end;
  width: fit-content;
  width: -moz-fit-content;
  max-width: 100%;
}

.obs-flow-col--verso .obs-flow-card.obs-flow-card--outer:not(.obs-flow-card--wide) {
  align-self: flex-start;
}

.obs-flow-col--recto .obs-flow-card:not(.obs-flow-card--wide) {
  align-self: flex-start;
  width: fit-content;
  width: -moz-fit-content;
  max-width: 100%;
}

/* Landscapes span the full column from gutter to outer margin */
.obs-flow-card.obs-flow-card--wide {
  align-self: stretch;
  width: 100%;
}

.obs-flow-card:last-child {
  margin-bottom: 0;
}

/* Wide-set landscapes (ITEMS[].wide): extra bottom air + `.obs-flow-card--wide` spine-hug offsets above */
.obs-flow-card--wide {
  margin-bottom: clamp(44px, 9vw, 104px);
}

.obs-flow-visual {
  position: relative;
  display: block;
  width: 100%;
}

.obs-flow-card:not(.obs-flow-card--wide) .obs-flow-visual {
  width: fit-content;
  width: -moz-fit-content;
  max-width: 100%;
}

/* Wide: bleed across the half-column; portrait: intrinsic width capped to column */
.obs-flow-card:not(.obs-flow-card--wide) .obs-flow-visual img {
  width: auto;
  max-width: 100%;
  height: auto;
}

.obs-flow-card.obs-flow-card--wide .obs-flow-visual img {
  width: 100%;
  height: auto;
}

.obs-flow-visual img {
  display: block;
  border-radius: 0;
  transition: opacity 0.3s;
}

.obs-flow-cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 11px 12px 12px;
  opacity: 0;
  transition: opacity 0.26s ease;
  pointer-events: none;
  box-sizing: border-box;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.58), transparent);
}

.obs-flow-cap-line {
  font-size: 9px;
  letter-spacing: 0.11em;
  color: rgba(255, 255, 255, 0.95);
  line-height: 1.35;
  display: block;
  text-align: inherit;
}

.obs-flow-col--verso .obs-flow-cap-line {
  text-align: right;
}

.obs-flow-col--recto .obs-flow-cap-line {
  text-align: left;
}

.obs-flow-card:hover .obs-flow-visual img {
  opacity: 0.88;
}

.obs-flow-card:hover .obs-flow-cap,
.obs-flow-card:focus-visible .obs-flow-cap {
  opacity: 1;
}

.obs-flow-card:focus-visible .obs-flow-visual img {
  opacity: 0.88;
}

.obs-flow-card:focus-visible {
  outline: none;
}

.obs-flow-card:focus-visible .obs-flow-visual {
  outline: 2px solid var(--focus-ring);
  outline-offset: 4px;
}

@media (max-width: 620px) {
  .obs-flow-root {
    flex-direction: column;
    align-items: stretch;
    gap: clamp(28px, 8vw, 48px);
  }

  .obs-flow-col {
    max-width: 100%;
    width: 100%;
  }

  .obs-flow-col--verso .obs-flow-card:not(.obs-flow-card--wide),
  .obs-flow-col--recto .obs-flow-card:not(.obs-flow-card--wide) {
    align-self: stretch;
    width: 100%;
  }

  .obs-flow-card:not(.obs-flow-card--wide) .obs-flow-visual {
    width: 100%;
  }

  .obs-flow-card:not(.obs-flow-card--wide) .obs-flow-visual img {
    width: 100%;
    height: auto;
  }

  .obs-flow-col--verso .obs-flow-card:nth-child(even),
  .obs-flow-col--recto .obs-flow-card:nth-child(even) {
    margin-top: clamp(28px, 10vw, 64px);
  }

  .obs-flow-col--verso .obs-flow-cap-line,
  .obs-flow-col--recto .obs-flow-cap-line {
    text-align: center;
  }
}

/* Carousel — SLIDE toggle */
.obs-view--carousel {
  overflow: hidden;
  min-height: 0;
}
.carousel-stage {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px clamp(16px, 4vw, 48px) 16px;
  box-sizing: border-box;
  cursor: zoom-in;
}
.carousel-stage img {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 160px);
  width: auto;
  height: auto;
  object-fit: contain;
  filter: contrast(1.06) saturate(0.88) brightness(0.95);
}
.carousel-foot {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(36px, 8vw, 120px);
  padding: 18px clamp(24px, 5vw, 56px) 26px;
  border-top: 1px solid var(--divider-soft);
}
.carousel-counter {
  font-size: 10px;
  letter-spacing: 0.12em;
  opacity: 0.45;
}
.carousel-nav {
  font-family: inherit;
  font-size: 13px;
  padding: 6px 12px;
  color: var(--text);
  background: none;
  border: 1px solid var(--divider-strong);
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}
.carousel-nav:hover {
  background: var(--invert-bg);
  color: var(--invert-fg);
  border-color: var(--invert-bg);
}

/* List */
#obs-list-view { overflow-y: auto; }
.obs-list-header {
  display: grid; grid-template-columns: 36px 100px 1fr minmax(112px, 18vw);
  padding: 9px 40px; border-bottom: 1px solid var(--border);
  font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase; opacity: 0.35;
}
.obs-list-header span:nth-child(n+4) { text-align: right; }
.obs-list-item {
  display: grid; grid-template-columns: 36px 100px 1fr minmax(112px, 18vw);
  align-items: center; padding: 0 40px; height: 66px;
  border-bottom: 1px solid var(--divider-soft); transition: background 0.1s;
}
.obs-list-item:hover { background: var(--muted-fill); }
.obs-list-n    { font-size: 10px; opacity: 0.35; }
.obs-list-thumb{ width: 84px; height: 54px; overflow: hidden; }
.obs-list-thumb img { width: 100%; height: 100%; object-fit: cover; }
.obs-list-title{ font-size: 12px; }
.obs-list-cat  { font-size: 10px; opacity: 0.4; text-align: right; }

/* Observer lightbox */
.obs-lightbox {
  position: fixed; inset: 0; background: var(--surface); z-index: 650;
  display: none; flex-direction: column; align-items: center; justify-content: center;
}
.obs-lightbox.open { display: flex; }
.lb-close {
  position: absolute; top: 18px; right: 24px;
  font-family: inherit; font-size: 10px; letter-spacing: 0.08em;
  color: var(--text); opacity: 0.35; transition: opacity 0.1s; z-index: 2;
}
.lb-close:hover { opacity: 1; }
.lb-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  font-family: inherit; font-size: 18px; color: var(--text);
  opacity: 0.25; transition: opacity 0.15s; padding: 16px; z-index: 2;
}
.lb-arrow:hover { opacity: 1; }
.lb-prev { left: 16px; }
.lb-next { right: 16px; }
.lb-stage {
  display: flex; flex-direction: column; align-items: center; max-width: 82vw; width: 100%;
}
.lb-img-zone {
  position: relative; max-width: 80vw; max-height: 72vh; overflow: hidden; flex-shrink: 0;
  transition: transform 0.3s ease;
}
.lb-img-zone.shifted { transform: translateY(-24px); }
.lb-img-zone img { max-width: 80vw; max-height: 72vh; object-fit: contain; display: block; }
.lb-tap-hint {
  position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%);
  font-size: 9px; letter-spacing: 0.1em; opacity: 0.4; pointer-events: none; white-space: nowrap;
  transition: opacity 0.2s;
}
.lb-tap-hint.hidden { opacity: 0; }
.lb-caption {
  max-width: 80vw; width: 100%; padding: 16px 0 0;
  opacity: 0; transform: translateY(10px); pointer-events: none;
  transition: opacity 0.28s ease, transform 0.28s ease;
  display: grid; grid-template-columns: auto 1fr; gap: 0 24px; align-items: start;
}
.lb-caption.visible { opacity: 1; transform: translateY(0); pointer-events: all; }
.lb-caption-left { text-align: right; }
.lb-cap-num   { font-size: 10px; opacity: 0.3; letter-spacing: 0.06em; margin-bottom: 6px; }
.lb-cap-cat   { font-size: 9px;  opacity: 0.4; letter-spacing: 0.1em; text-transform: uppercase; margin-top: 0; }
.lb-cap-title { font-size: 18px; line-height: 1.2; margin-bottom: 10px; }
.lb-cap-loc   { font-size: 10px; opacity: 0.4; letter-spacing: 0.04em; margin-bottom: 8px; }
.lb-cap-desc  { font-size: 12px; line-height: 1.75; opacity: 0.6; max-width: 500px; }

/* ── BUILDER — index (Recent + All work) + case study detail ───*/
#panel-builder {
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

.builder-view--off {
  display: none !important;
}

.builder-page {
  min-height: min-content;
}

.builder-page-inner {
  max-width: min(1120px, 100%);
  margin: 0 auto;
  padding: 40px clamp(24px, 4vw, 48px) 96px;
  box-sizing: border-box;
}

.builder-section {
  margin-bottom: 56px;
}

.builder-section--first {
  margin-top: 0;
}

.builder-section-label {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.38;
  margin: 0 0 20px;
  color: var(--text);
}

.builder-recent {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(16px, 2.5vw, 24px);
}

.builder-card {
  border: 1px solid var(--divider);
  background: var(--surface);
  padding: 0;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease;
  box-sizing: border-box;
  text-align: left;
  color: inherit;
  font: inherit;
}

.builder-card:hover,
.builder-card:focus-visible {
  background: var(--muted-fill);
  border-color: var(--divider-strong);
  outline: none;
}

.builder-card-preview {
  aspect-ratio: 16 / 9;
  background: var(--surface-warm);
  border-bottom: 1px solid var(--divider-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 20px;
  color: var(--text);
  box-sizing: border-box;
}

.builder-card-art__svg {
  width: 100%;
  max-width: 320px;
  height: auto;
  display: block;
}

.builder-card-badge {
  font-size: 9px;
  letter-spacing: 0.1em;
  opacity: 0.42;
  margin: 16px 20px 0;
  color: var(--text);
}

.builder-card-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 8px 20px 0;
  line-height: 1.35;
  color: var(--text);
}

.builder-card-desc {
  font-size: 12px;
  line-height: 1.65;
  opacity: 0.62;
  margin: 10px 20px 0;
  color: var(--text);
}

.builder-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 20px 0;
}

.builder-card-tag {
  font-size: 9px;
  letter-spacing: 0.06em;
  padding: 4px 8px;
  border: 1px solid var(--divider);
  opacity: 0.85;
  color: var(--text);
}

.builder-card-cta {
  font-size: 10px;
  letter-spacing: 0.06em;
  opacity: 0.45;
  margin: 18px 20px 20px;
  color: var(--text);
}

.builder-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}

.builder-filter {
  font-family: inherit;
  font-size: 10px;
  letter-spacing: 0.06em;
  padding: 5px 12px;
  border: 1px solid var(--divider);
  background: transparent;
  color: var(--text);
  opacity: 0.55;
  cursor: pointer;
  transition: opacity 0.12s ease, background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}

.builder-filter[data-filter='build'] {
  border-color: var(--tag-build-border);
  color: var(--tag-build-color);
  opacity: 1;
}

.builder-filter[data-filter='design'] {
  border-color: var(--tag-design-border);
  color: var(--tag-design-color);
  opacity: 1;
}

.builder-filter[data-filter='strategy'] {
  border-color: var(--tag-strategy-border);
  color: var(--tag-strategy-color);
  opacity: 1;
}

.builder-filter[data-filter='field'] {
  border-color: var(--tag-field-border);
  color: var(--tag-field-color);
  opacity: 1;
}

.builder-filter[data-filter='all'] {
  border-color: var(--divider-strong);
  color: var(--text);
  opacity: 0.55;
}

.builder-filter:hover {
  opacity: 1;
}

.builder-filter[data-filter='build'].builder-filter--active {
  background: var(--tag-build-fill);
  border-color: var(--tag-build-border);
  color: var(--tag-build-color);
  opacity: 1;
}

.builder-filter[data-filter='design'].builder-filter--active {
  background: var(--tag-design-fill);
  border-color: var(--tag-design-border);
  color: var(--tag-design-color);
  opacity: 1;
}

.builder-filter[data-filter='strategy'].builder-filter--active {
  background: var(--tag-strategy-fill);
  border-color: var(--tag-strategy-border);
  color: var(--tag-strategy-color);
  opacity: 1;
}

.builder-filter[data-filter='field'].builder-filter--active {
  background: var(--tag-field-fill);
  border-color: var(--tag-field-border);
  color: var(--tag-field-color);
  opacity: 1;
}

.builder-filter[data-filter='all'].builder-filter--active {
  background: var(--muted-fill);
  border-color: var(--border);
  color: var(--text);
  opacity: 1;
}

.builder-work-list {
  border-top: 1px solid var(--border);
}

.builder-work-row {
  display: grid;
  grid-template-columns: 40px 1fr auto 56px;
  gap: 16px;
  align-items: center;
  width: 100%;
  padding: 16px 4px;
  border: none;
  border-bottom: 1px solid var(--divider-soft);
  background: transparent;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  color: var(--text);
  transition: background 0.1s;
  box-sizing: border-box;
}

.builder-work-row:hover {
  background: var(--muted-fill);
}

.builder-work-num {
  font-size: 10px;
  opacity: 0.35;
  letter-spacing: 0.06em;
}

.builder-work-title {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.builder-work-year {
  font-size: 10px;
  opacity: 0.38;
  text-align: right;
  letter-spacing: 0.04em;
}

.builder-work-tag {
  font-size: 9px;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border: 1px solid var(--divider);
  justify-self: start;
}

.builder-work-tag--build {
  border-color: var(--tag-build-border);
  color: var(--tag-build-color);
}

.builder-work-tag--design {
  border-color: var(--tag-design-border);
  color: var(--tag-design-color);
}

.builder-work-tag--strategy {
  border-color: var(--tag-strategy-border);
  color: var(--tag-strategy-color);
}

.builder-work-tag--field {
  border-color: var(--tag-field-border);
  color: var(--tag-field-color);
}

.builder-detail {
  min-height: min-content;
  background: var(--surface);
}

.builder-detail-top {
  position: sticky;
  top: 0;
  z-index: 5;
  padding: 14px clamp(24px, 4vw, 48px);
  background: var(--surface);
  border-bottom: 1px solid var(--divider-soft);
}

.builder-back {
  font-family: inherit;
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--text);
  opacity: 0.5;
  cursor: pointer;
  transition: opacity 0.1s;
  padding: 0;
}

.builder-back:hover {
  opacity: 1;
}

.builder-detail-body {
  box-sizing: border-box;
}

.builder-detail-body .gov-case {
  border-top: none;
  max-width: min(940px, 100%);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(24px, 4vw, 48px);
  padding-right: clamp(24px, 4vw, 48px);
  text-align: left;
}

.builder-detail-body .gov-case > .cs-header,
.builder-detail-body .cs-header {
  max-width: min(940px, 100%);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(24px, 4vw, 48px);
  padding-right: clamp(24px, 4vw, 48px);
  text-align: center;
}

.builder-detail-body .cs-body {
  max-width: min(940px, 100%);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(24px, 4vw, 48px);
  padding-right: clamp(24px, 4vw, 48px);
  text-align: left;
}

.builder-detail-body .gov-h2,
.builder-detail-body .gov-h3,
.builder-detail-body .cs-case-h {
  margin-left: auto;
  margin-right: auto;
  max-width: min(940px, 100%);
  text-align: left;
}

.builder-detail-body .gov-p,
.builder-detail-body .gov-pre,
.builder-detail-body .cs-text {
  margin-left: auto;
  margin-right: auto;
  max-width: min(940px, 100%);
  text-align: left;
}

.builder-detail-body .cs-header-desc,
.builder-detail-body .cs-header-tech,
.builder-detail-body .cs-header-solo {
  text-align: center;
}

.builder-detail-body .cs-caption,
.builder-detail-body .gov-fig-caption,
.builder-detail-body .gov-footer,
.builder-detail-body .gov-p--footer {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.builder-detail-body .gov-vid-slot,
.builder-detail-body .gov-figure,
.builder-detail-body .gov-figure--sm,
.builder-detail-body .gov-case .gov-figure--sm,
.builder-detail-body .gov-fig-hit,
.builder-detail-body .cs-hero,
.builder-detail-body .cs-hero--video,
.builder-detail-body .cs-section,
.builder-detail-body .cs-img-wrap,
.builder-detail-body .cs-vid-container {
  margin-left: auto;
  margin-right: auto;
}

.builder-detail-body .cs-hero {
  max-width: min(940px, 100%);
}

.builder-detail-body .cs-hero--video {
  width: min(940px, calc(100% - 48px));
  margin: 10px auto 36px;
}

.builder-detail-body .cs-img-row {
  max-width: min(940px, 100%);
}

.builder-detail-body .gov-mail {
  display: inline-block;
}

.builder-detail-body .playce-how,
.builder-detail-body .playce-how__label {
  text-align: center;
}

.builder-detail-body .playce-how__step-copy {
  text-align: left;
}

.builder-detail-body .playce-how__step-fig {
  width: 100%;
  max-width: min(520px, 100%);
  margin-left: auto;
  margin-right: auto;
}

/* ── Governance case study — AI Governance Dashboard (Builder right) ── */
.gov-case {
  padding: 36px 48px 96px;
  border-top: 1px solid var(--divider-faint);
  max-width: none;
  box-sizing: border-box;
}

/* Nested header shares typography with other Builder case studies; strip duplicate outer padding */
.gov-case > .cs-header {
  padding: 0;
  margin: 0 0 28px;
}

.gov-rule {
  height: 0;
  margin: 32px 0;
  border: none;
  border-top: 1px solid var(--divider);
}

.gov-h2 {
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 40px 0 14px;
  color: var(--text);
}

.gov-h2-num {
  opacity: 0.42;
  margin-right: 6px;
  font-weight: 600;
}

/* PLAYCE — Traveller journey: step grid (matches .gov-h3 / .gov-p colour rhythm) */
.gov-case .playce-how {
  margin-top: 0;
  padding: 0;
  box-sizing: border-box;
}

.gov-case .playce-how__steps {
  margin: 0;
  padding: 0;
}

.gov-case .playce-how__step {
  display: grid;
  grid-template-columns: 48px 1fr 1fr;
  gap: 48px;
  padding: 48px 0;
  align-items: start;
  border-top: 0.5px solid var(--frame);
  box-sizing: border-box;
}

.gov-case .playce-how__step-num {
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  opacity: 0.42;
  color: var(--text);
  line-height: 1.3;
  padding-top: 2px;
}

.gov-case .playce-how__step-title {
  margin: 0 0 8px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.42;
  color: var(--text);
}

.gov-case .playce-how__step-desc {
  margin: 0;
  font-family: inherit;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.82;
  opacity: 0.78;
  color: var(--text);
}

.gov-case .playce-how__step-fig {
  margin: 0;
  padding: 0;
  min-width: 0;
}

.gov-case .playce-how__shot {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--surface-warm);
  border: 0.5px solid var(--frame);
  box-sizing: border-box;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gov-case .playce-how__shot-ph {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.35;
  color: var(--text);
  pointer-events: none;
  user-select: none;
}

.gov-case .playce-how__step-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  box-sizing: border-box;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.gov-case .playce-how__shot:has(.playce-how__step-img[src]:not([src=''])) .playce-how__step-img {
  opacity: 1;
}

.gov-case .playce-how__shot:has(.playce-how__step-img[src]:not([src=''])) .playce-how__shot-ph {
  opacity: 0;
}

@media (max-width: 880px) {
  .gov-case .playce-how__step {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 36px 0;
  }

  .gov-case .playce-how__step-num {
    padding-top: 0;
  }
}

.gov-h3 {
  font-size: 12px;
  font-weight: 600;
  margin: 26px 0 8px;
  color: var(--text);
}

.gov-p {
  font-size: 13px;
  line-height: 1.82;
  opacity: 0.78;
  margin: 0 0 16px;
  max-width: 680px;
  color: var(--text);
}

/* Wider readable measure for Governance + PLAYCE Builder case studies */
.gov-case .gov-p,
.gov-case .gov-pre {
  max-width: min(940px, 100%);
}

.gov-case .cs-header-desc,
.gov-case .cs-header-solo,
.gov-case .cs-header-tech {
  max-width: min(940px, 100%);
}

.gov-vid-slot {
  width: min(940px, 100%);
  margin: 10px 0 36px;
  box-sizing: border-box;
}

.gov-vid-slot .cs-vid-container {
  display: flex;
  flex-direction: column;
  height: auto;
  min-height: 0;
  margin-bottom: 0;
  overflow: visible;
  background: #0b111b;
  border: 1px solid var(--divider);
  border-radius: 2px;
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.04),
    0 18px 40px -28px rgba(0, 0, 0, 0.18);
}

.builder-detail-body .gov-vid-slot .cs-vid-container .cs-vid {
  flex: none;
  width: 100%;
  height: auto;
  max-height: none;
  object-fit: contain;
  display: block;
  background: #111;
}

.gov-vid-slot .vid-bar {
  flex-shrink: 0;
}

.gov-vid-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #111;
  border: 0.5px solid var(--frame-line);
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.gov-vid-placeholder-label {
  font-size: 11px;
  opacity: 0.2;
}

.gov-vid-placeholder-sub {
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.12;
}

.gov-pre {
  margin: 16px 0;
  padding: 16px 20px;
  max-width: 680px;
  box-sizing: border-box;
  background: var(--fill-warm);
  border: 0.5px solid var(--frame);
  font-family: inherit;
  font-size: 11px;
  line-height: 1.65;
  opacity: 0.72;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
}

.gov-figure {
  margin: 32px 0 28px;
  max-width: min(880px, 100%);
  padding: 0;
}

.gov-fig-caption {
  margin: 12px 0 0;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.45;
  text-align: center;
  opacity: 0.72;
  color: var(--text);
}

.gov-figure--sm {
  max-width: min(660px, 90%);
}

.gov-case .gov-figure--sm {
  max-width: min(660px, 96%);
}

.gov-figure--flow {
  max-width: min(600px, 96%);
}

.gov-figure--sm .gov-fig-hit,
.gov-figure--flow .gov-fig-hit {
  width: fit-content;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.gov-figure--sm img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 440px;
}

.gov-figure--flow img {
  max-height: 600px;
}

.gov-fig-hit {
  appearance: none;
  -webkit-appearance: none;
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  cursor: zoom-in;
  outline: none;
  font: inherit;
  text-align: left;
  box-sizing: border-box;
}

.gov-figure img {
  width: 100%;
  height: auto;
  display: block;
}

.gov-fig-hit:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.gov-footer {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--divider-soft);
}

.gov-h2--footer {
  margin-top: 0;
}

.gov-p--footer {
  margin-bottom: 0;
}

.gov-mail {
  color: inherit;
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid color-mix(in srgb, var(--text) 22%, transparent);
}

.gov-mail:hover {
  opacity: 0.52;
}

/* Inline governance figures — fullscreen zoom (stay on Builder page; no new tab) */
.gov-figure-zoom {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 25000;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  isolation: isolate;
  mix-blend-mode: normal;
}
.gov-figure-zoom.open {
  display: flex;
  pointer-events: auto;
}
.gov-figure-zoom__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--elevated);
  cursor: zoom-out;
}
.gov-figure-zoom__close {
  position: fixed;
  top: 22px;
  right: clamp(18px, 4vw, 28px);
  z-index: 2;
  font-family: inherit;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: var(--text);
  opacity: 0.45;
  cursor: pointer;
  pointer-events: auto;
}
.gov-figure-zoom__close:hover {
  opacity: 1;
}
.gov-figure-zoom__close:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}
.gov-figure-zoom__frame {
  position: relative;
  z-index: 1;
  max-width: 96vw;
  max-height: 88vh;
  overflow: auto;
  pointer-events: auto;
  padding: 16px;
  box-sizing: border-box;
  isolation: isolate;
  mix-blend-mode: normal;
}
.gov-figure-zoom__img {
  display: block;
  margin: 0 auto;
  border: 0;
  outline: none;
  max-width: min(920px, 92vw);
  width: min(920px, 92vw);
  height: auto;
  max-height: 82vh;
  object-fit: contain;
  cursor: zoom-out;
  pointer-events: auto;
  opacity: 1;
  mix-blend-mode: normal;
  filter: none;
}
html.gov-figure-zoom-open body::after {
  opacity: 0;
  visibility: hidden;
}
html.gov-figure-zoom-open,
html.gov-figure-zoom-open body {
  overflow: hidden;
}

.cs-header {
  padding: 32px 48px 20px;
  border-bottom: none;
}
.cs-header-num {
  font-size: 10px;
  opacity: 0.45;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.cs-header-title {
  font-size: clamp(21px, 2.35vw, 30px);
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
  line-height: 1.22;
}
.cs-header-solo {
  font-size: 11px;
  letter-spacing: 0.06em;
  opacity: 0.52;
  margin: 0 0 12px;
  color: var(--text);
}
.cs-header-desc {
  font-size: 12px;
  opacity: 0.62;
  line-height: 1.65;
  max-width: min(640px, 92vw);
  margin-bottom: 0;
}
.cs-header-tech {
  font-size: 11px;
  line-height: 1.55;
  letter-spacing: 0.03em;
  opacity: 0.42;
  max-width: min(680px, 92vw);
  margin: 8px 0 0;
}
.cs-case-h {
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    'Segoe UI',
    sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-transform: none;
  opacity: 0.78;
  margin: 36px 0 12px;
  max-width: 680px;
  line-height: 1.35;
}
.cs-body > .cs-case-h:first-child {
  margin-top: 0;
  padding-top: 2px;
}
.cs-case-h + .cs-text {
  margin-top: 0;
}
.cs-hero {
  box-sizing: border-box;
  width: 100%;
  margin: 0;
  aspect-ratio: 16/9;
  overflow: hidden;
  border: none;
}
.cs-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cs-hero--video {
  display: block;
  width: min(880px, calc(100% - 96px));
  margin: 10px 48px 36px;
  box-sizing: border-box;
  aspect-ratio: auto;
  overflow: visible;
}

.cs-hero--video .cs-vid-container {
  display: flex;
  flex-direction: column;
  height: auto;
  min-height: 0;
  margin-bottom: 0;
  background: #0b111b;
  border: 1px solid var(--divider);
  border-radius: 2px;
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.04),
    0 18px 40px -28px rgba(0, 0, 0, 0.18);
}

.cs-hero--video .cs-vid {
  flex: none;
  width: 100%;
}

/* Overrides inline case-study videos (contain + intrinsic height — no crop); must follow .cs-vid-container .cs-vid */
.cs-hero--video .cs-vid-container .cs-vid {
  height: auto;
  max-height: none;
  object-fit: contain;
  display: block;
}

.cs-hero--video .vid-bar {
  flex-shrink: 0;
}

.cs-body {
  padding: 36px 48px 88px;
  border-top: 1px solid var(--divider-faint);
}
.cs-text {
  font-size: 13px;
  line-height: 1.78;
  opacity: 0.78;
  margin-bottom: 28px;
  max-width: 680px;
}
.cs-section { margin-bottom: 48px; }
.cs-img-wrap { margin-bottom: 8px; border: 1px solid var(--divider); overflow: hidden; }
.cs-img-wrap img { width: 100%; height: auto; display: block; }
.cs-vid-container {
  border: 1px solid var(--divider);
  overflow: hidden;
  margin-bottom: 8px;
  background: var(--surface);
  display: flex;
  flex-direction: column;
}
.cs-vid-container .cs-vid {
  width: 100%;
  display: block;
  max-height: 56vh;
  object-fit: cover;
}

.vid-progress-wrap {
  flex: 1;
  min-width: 72px;
  display: flex;
  align-items: center;
}

.vid-seek {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 5px;
  border-radius: 2px;
  background: var(--scrub-track);
  outline: none;
  cursor: pointer;
}
.vid-seek::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--invert-bg);
  cursor: pointer;
}
.vid-seek::-moz-range-thumb {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--invert-bg);
  border: none;
  cursor: pointer;
}
.vid-time {
  flex-shrink: 0;
  font-size: 9px;
  letter-spacing: 0.06em;
  opacity: 0.45;
  font-variant-numeric: tabular-nums;
}

/* Control bar */
.vid-bar {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  flex-shrink: 0;
  padding: 8px 14px;
  border-top: none;
  background: var(--surface);
  font-size: 9px;
  letter-spacing: 0.06em;
}
.vid-playpause,
.vid-mute,
.vid-fullscreen {
  font-family: inherit; font-size: 9px; letter-spacing: 0.06em;
  border: 1px solid var(--border); padding: 4px 11px; color: var(--text);
  background: none; transition: background 0.12s; flex-shrink: 0;
}
.vid-playpause:hover, .vid-mute:hover, .vid-fullscreen:hover { background: var(--invert-bg); color: var(--invert-fg); }

.vid-speeds  { display: flex; align-items: center; gap: 10px; }
.vid-spd {
  font-family: inherit; font-size: 9px; letter-spacing: 0.04em;
  border: none; background: none; color: #aaa; padding: 0;
}
.vid-spd--active { color: var(--text); border-bottom: 1px solid var(--border); }
.vid-spd:hover   { color: var(--text); }

.vid-vol-group {
  display: flex; align-items: center; gap: 10px; margin-left: auto;
}
.vid-vol-slider {
  -webkit-appearance: none; width: 90px; height: 2px;
  background: var(--vol-track); outline: none; border-radius: 1px;
}
.vid-vol-slider::-webkit-slider-thumb {
  -webkit-appearance: none; width: 10px; height: 10px;
  border-radius: 50%; background: var(--invert-bg); cursor: none;
}
.vid-vol-slider::-moz-range-thumb {
  width: 10px; height: 10px; border-radius: 50%; background: var(--invert-bg); border: none;
}
.cs-caption { font-size: 10px; opacity: 0.4; letter-spacing: 0.04em; margin-bottom: 32px; }
.cs-img-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 8px; }

/* ── PLAYER — compact 2×2 card grid (monochrome framing) ─*/
#panel-player { overflow: hidden; background: var(--surface); }

.player-wrap {
  height: calc(100vh - 40px);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 28px 40px 40px; gap: 18px;
}
.player-header {
  align-self: flex-start;
  width: min(820px, 92vw);
}
.player-subtitle {
  font-size: clamp(18px, 2.2vw, 24px); font-weight: 500; letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text);
  margin: 0 0 10px;
}
.player-tagline {
  font-size: 12px;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--text);
  opacity: 0.45;
  margin: 0;
  max-width: 38em;
}

/* 2×2 grid — thin black grille */
.player-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  width: min(820px, 92vw);
  height: min(600px, 80vh);
  border: 1px solid var(--border);
}
.player-cell {
  display: flex; flex-direction: column;
  padding: 16px 20px;
  overflow: hidden;
  min-height: 0;
  background: var(--surface);
  border-right: 1px solid var(--border); border-bottom: 1px solid var(--border);
  cursor: pointer; transition: background 0.15s ease;
}
.player-cell:nth-child(2n)  { border-right: none; }
.player-cell:nth-child(n+3) { border-bottom: none; }
.player-cell:hover          { background: var(--muted-fill); }

.pc-top    { flex-shrink: 0; margin-bottom: 8px; }
.pc-num    {
  font-size: 9px;
  color: var(--text);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.38;
}
.pc-title  {
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 6px;
  flex-shrink: 0;
  color: var(--text);
}
.pc-desc   {
  font-size: 11px;
  color: var(--text);
  opacity: 0.48;
  line-height: 1.52;
  flex-shrink: 0;
}

.pc-art-box {
  flex: 0 0 auto;
  align-self: stretch;
  height: clamp(84px, 14vh, 124px);
  max-height: min(124px, 26vh);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 0 8px;
  background: var(--surface-warm);
  border: 1px solid var(--divider-strong);
  color: var(--text);
}

/* Monochrome catalogue icons (playroom-art.js) */
.pc-art-box svg {
  width: 100%;
  height: auto;
  max-height: 100%;
  display: block;
  opacity: 0.94;
}

html[data-theme='dark'] .pc-art-box {
  background: color-mix(in srgb, var(--surface-warm) 88%, #000 12%);
  border-color: var(--divider-strong);
}

html[data-theme='dark'] .pc-art-box svg {
  opacity: 1;
}

.pc-footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-top: auto;
  flex-shrink: 0;
  padding-top: 6px;
}
.pc-play   {
  font-family: inherit; font-size: 9px; letter-spacing: 0.08em;
  border: 1px solid var(--border); padding: 6px 14px; color: var(--text);
  background: var(--surface);
  opacity: 0; transition: opacity 0.15s;
}
.player-cell:hover .pc-play { opacity: 1; }
.pc-play:hover { background: var(--invert-bg); color: var(--invert-fg); border-color: var(--invert-bg); }

/* ── GAME FULLSCREEN ──────────────────────────────────*/
.game-fullscreen {
  position: fixed; inset: 0; background: var(--surface); z-index: 700;
  display: none; flex-direction: column;
}
.game-fullscreen:has(.gfs-body--sudoku) {
  background: var(--surface);
}
.game-fullscreen:has(.gfs-body--memory) {
  background: var(--surface);
}
/* Memory uses most of viewport — outer .gfs-body 60×2 paddings were starving the grid */
.game-fullscreen:has(.gfs-body--memory) .gfs-body.gfs-body--memory {
  padding: 44px 20px 40px;
}

.game-fullscreen.open { display: flex; }

.gfs-close {
  position: absolute; top: 16px; right: 24px;
  font-family: inherit; font-size: 10px; letter-spacing: 0.08em;
  color: #A14A2A;
  opacity: 0.55; transition: opacity 0.1s, color 0.1s; z-index: 1;
}
.gfs-close:hover { opacity: 1; color: #1a1714; }
.game-fullscreen:has(.gfs-body--memory) .gfs-close {
  color: var(--text);
  opacity: 0.42;
}
.game-fullscreen:has(.gfs-body--memory) .gfs-close:hover {
  opacity: 1;
  color: var(--text);
}
.game-fullscreen:has(.gfs-body--sudoku) .gfs-close {
  color: var(--text);
  opacity: 0.42;
}
.game-fullscreen:has(.gfs-body--sudoku) .gfs-close:hover {
  opacity: 1;
  color: var(--text);
}

/* Word Drift fullscreen shell — dark vs light uses attribute on gfs-body */
.game-fullscreen:has(.gfs-body--worddrift[data-theme='dark']) {
  background: #080806;
}

.game-fullscreen:has(.gfs-body--worddrift[data-theme='light']) {
  background: var(--surface)fff;
}
.game-fullscreen:has(.gfs-body--worddrift[data-theme='light']) .gfs-close {
  /* Match dark branch: gfs-body stacks above default .gfs-close (both z-index:1); must lift CLOSE */
  color: rgba(12, 10, 8, 0.88);
  opacity: 1;
  z-index: 10050;
  text-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.95),
    0 0 8px rgba(255, 255, 255, 0.72);
}

.game-fullscreen:has(.gfs-body--worddrift[data-theme='light']) .gfs-close:hover {
  color: #060504;
  opacity: 1;
}

/* Word Drift (Playroom fullscreen) — CLOSE button default (dark branch) */
.game-fullscreen:has(.gfs-body--worddrift[data-theme='dark']) .gfs-close {
  color: rgba(237, 232, 221, 0.75);
  opacity: 0.92;
  /* Below crosshair layers; reserve topbar pad-right so text does not slide under CLOSE */
  z-index: 10050;
}
.game-fullscreen:has(.gfs-body--worddrift[data-theme='dark']) .gfs-close:hover {
  color: #f0ece4;
  opacity: 1;
}

body.playroom-wf-open #cursor,
body.playroom-wf-open #cursor2 {
  opacity: 0 !important;
  pointer-events: none;
}

.gfs-body--worddrift {
  flex: 1;
  align-self: stretch;
  width: 100%;
  max-width: none;
  min-height: 0;
  padding: 0 !important;
  margin: 0;
  overflow: hidden;
  position: relative;
  background: #080806;
  color: #f0ece4;
  font-family: "Space Mono", ui-monospace, monospace;
  user-select: none;
  -webkit-user-select: none;
  /* Default .gfs-body centers children — keep Word Drift chrome at the top */
  justify-content: flex-start;
  align-items: stretch;
}

.gfs-body--worddrift::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  background-size: 200px;
}

.gfs-body--worddrift[data-theme='light']::before {
  opacity: 0;
}

.gfs-body--worddrift[data-theme='light'] {
  background: var(--surface)fff;
  color: #12110f;
}

.gfs-body--worddrift #wd-c {
  position: fixed;
  inset: 0;
  z-index: 1;
  cursor: none;
}

.gfs-body--worddrift #wd-ch,
.gfs-body--worddrift #wd-cv {
  position: fixed;
  z-index: 9999;
  pointer-events: none;
  background: rgba(240, 236, 228, 0.5);
}
.gfs-body--worddrift #wd-ch {
  height: 1px;
  width: 18px;
  transform: translate(-50%, -50%);
}
.gfs-body--worddrift #wd-cv {
  width: 1px;
  height: 18px;
  transform: translate(-50%, -50%);
}
.gfs-body--worddrift #wd-cdot {
  position: fixed;
  z-index: 10000;
  pointer-events: none;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #f0ece4;
  transform: translate(-50%, -50%);
}

.gfs-body--worddrift .wd-ui {
  position: fixed;
  z-index: 10;
  pointer-events: none;
}

.gfs-body--worddrift .wd-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(96px, 15vw, 140px) 0 28px;
  border-bottom: 0.5px solid rgba(240, 236, 228, 0.07);
  background: rgba(8, 8, 6, 0.9);
  backdrop-filter: blur(20px);
  gap: clamp(14px, 3vw, 28px);
  z-index: 10;
  pointer-events: auto;
}

.gfs-body--worddrift #wd-logo {
  flex: 0 0 auto;
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-style: normal;
  color: rgba(237, 232, 221, 0.45);
  appearance: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px 0;
  margin: 0;
  text-align: left;
}

.gfs-body--worddrift #wd-logo:hover {
  color: rgba(240, 236, 228, 0.88);
}
.gfs-body--worddrift #wd-gtitle {
  /* True viewport centre: side columns no longer pull the title off-axis */
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: max-content;
  max-width: min(72vw, 320px);
  white-space: nowrap;
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: clamp(17px, 2.2vw, 24px);
  font-weight: 700;
  font-style: normal;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(237, 232, 221, 0.92);
  text-align: center;
  pointer-events: none;
}
.gfs-body--worddrift #wd-topr-wrap {
  flex: 0 1 42%;
  min-width: 0;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(14px, 3vw, 26px);
  padding-right: 4px;
}

.gfs-body--worddrift .wd-topr-lines {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 3px;
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 11px;
  font-weight: 500;
  font-style: normal;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: rgba(237, 232, 221, 0.68);
  text-align: right;
  line-height: 1.25;
}

.gfs-body--worddrift[data-theme='light'] .wd-topr-lines {
  color: rgba(28, 24, 20, 0.62);
}

.gfs-body--worddrift .wd-theme-btn {
  flex-shrink: 0;
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-style: normal;
  color: rgba(237, 232, 221, 0.55);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px 0;
}

.gfs-body--worddrift .wd-theme-btn:hover {
  color: rgba(240, 236, 228, 0.95);
}

.gfs-body--worddrift[data-theme='light'] #wd-logo {
  color: rgba(28, 24, 20, 0.48);
}

.gfs-body--worddrift[data-theme='light'] #wd-logo:hover {
  color: rgba(10, 8, 6, 0.88);
}

.gfs-body--worddrift[data-theme='light'] #wd-gtitle {
  color: rgba(26, 22, 18, 0.92);
}

.gfs-body--worddrift[data-theme='light'] .wd-theme-btn {
  color: rgba(26, 22, 18, 0.55);
}

.gfs-body--worddrift[data-theme='light'] .wd-theme-btn:hover {
  color: #12110f;
}

.gfs-body--worddrift[data-theme='light'] .wd-topbar {
  border-bottom-color: rgba(26, 22, 18, 0.1);
  background: rgba(255, 255, 255, 0.96);
}

.gfs-body--worddrift[data-theme='light'] #wd-ch,
.gfs-body--worddrift[data-theme='light'] #wd-cv {
  background: rgba(26, 22, 18, 0.45);
}

.gfs-body--worddrift[data-theme='light'] #wd-cdot {
  background: #1a1714;
}

.gfs-body--worddrift[data-theme='light'] .wd-score-panel .wd-sl,
.gfs-body--worddrift[data-theme='light'] .wd-lives-panel .wd-sl {
  color: rgba(26, 22, 18, 0.48);
}

.gfs-body--worddrift[data-theme='light'] .wd-sv {
  color: #12110f;
}

.gfs-body--worddrift[data-theme='light'] .wd-bottombar {
  border-top-color: rgba(26, 22, 18, 0.1);
  background: rgba(255, 255, 255, 0.97);
}

.gfs-body--worddrift[data-theme='light'] #wd-word-label,
.gfs-body--worddrift[data-theme='light'] #wd-hint {
  color: rgba(26, 22, 18, 0.72);
}

.gfs-body--worddrift[data-theme='light'] #wd-word-progress {
  color: rgba(26, 22, 18, 0.68);
}

.gfs-body--worddrift[data-theme='light'] .wd-slot {
  color: #12110f;
  border-bottom-color: rgba(26, 22, 18, 0.42);
}

.gfs-body--worddrift[data-theme='light'] .wd-slot.wd-slot--active {
  border-color: rgba(26, 22, 18, 0.55);
}

.gfs-body--worddrift[data-theme='light'] .wd-slot.wd-slot--filled {
  border-color: rgba(26, 22, 18, 0.62);
}

.gfs-body--worddrift[data-theme='light'] #wd-caught-flash {
  color: #12110f;
}

.gfs-body--worddrift[data-theme='light'] #wd-score-popup {
  color: rgba(26, 22, 18, 0.88);
}

.gfs-body--worddrift[data-theme='light'] .wd-screen {
  background: rgba(255, 255, 255, 0.98);
  color: #12110f;
}

.gfs-body--worddrift[data-theme='light'] .wd-screen h1,
.gfs-body--worddrift[data-theme='light'] .wd-screen p {
  color: #141210;
}

.gfs-body--worddrift[data-theme='light'] .wd-screen .wd-sbtn {
  color: #12110f;
  border-color: rgba(26, 22, 18, 0.28);
}

.gfs-body--worddrift[data-theme='light'] .wd-screen .wd-sbtn:hover {
  border-color: rgba(26, 22, 18, 0.55);
}

.gfs-body--worddrift[data-theme='light'] #wd-final-num {
  color: #12110f;
}

.gfs-body--worddrift #wd-top-line1,
.gfs-body--worddrift #wd-top-line2 {
  display: block;
  white-space: nowrap;
}

.gfs-body--worddrift .wd-score-panel {
  top: 72px;
  right: 40px;
  text-align: right;
}
.gfs-body--worddrift .wd-lives-panel {
  top: 72px;
  left: 40px;
}
.gfs-body--worddrift .wd-sl {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(237, 232, 221, 0.45);
  display: block;
  margin-bottom: 2px;
}
.gfs-body--worddrift .wd-sv {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: clamp(36px, 5.5vw, 44px);
  font-weight: 700;
  font-style: normal;
  letter-spacing: 0.02em;
  color: #f0ece4;
  line-height: 1;
  display: block;
}

.gfs-body--worddrift .wd-bottombar {
  position: fixed;
  z-index: 10;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(8, 8, 6, 0.92);
  backdrop-filter: blur(20px);
  border-top: 0.5px solid rgba(240, 236, 228, 0.07);
  padding: 20px 40px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  pointer-events: none;
}
.gfs-body--worddrift #wd-word-label {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  color: rgba(240, 236, 228, 0.78);
}
.gfs-body--worddrift #wd-slots {
  display: flex;
  gap: 8px;
  align-items: center;
  pointer-events: none;
}
.gfs-body--worddrift #wd-word-progress {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(240, 236, 228, 0.72);
  margin-top: 2px;
}
.gfs-body--worddrift .wd-slot {
  width: 36px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(240, 236, 228, 0.38);
  font-size: 22px;
  font-weight: 700;
  color: #f0ece4;
  letter-spacing: 0;
  transition: border-color 0.2s, color 0.2s;
  position: relative;
  box-sizing: border-box;
}
.gfs-body--worddrift .wd-slot.wd-slot--active {
  border-color: rgba(240, 236, 228, 0.5);
}
.gfs-body--worddrift .wd-slot.wd-slot--filled {
  border-color: rgba(240, 236, 228, 0.6);
}
.gfs-body--worddrift .wd-slot.wd-slot--wrong {
  color: rgba(255, 100, 100, 0.8);
  border-color: rgba(255, 100, 100, 0.4);
  animation: wd-slot-shake 0.25s ease;
}

@keyframes wd-slot-shake {
  0%,
  100% { transform: translateX(0); }
  30% { transform: translateX(-5px); }
  70% { transform: translateX(5px); }
}

.gfs-body--worddrift #wd-hint {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  color: rgba(240, 236, 228, 0.68);
  margin-top: 2px;
}

.gfs-body--worddrift #wd-caught-flash {
  position: fixed;
  z-index: 15;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: clamp(34px, 5.5vw, 64px);
  font-weight: 700;
  font-style: normal;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #f0ece4;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
}

.gfs-body--worddrift #wd-score-popup {
  position: fixed;
  z-index: 15;
  pointer-events: none;
  opacity: 0;
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 20px;
  font-weight: 600;
  font-style: normal;
  letter-spacing: 0.04em;
  color: rgba(240, 236, 228, 0.75);
  transition: opacity 0.2s, transform 0.4s;
}

.gfs-body--worddrift .wd-screen {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: rgba(8, 8, 6, 0.96);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  transition: opacity 0.35s;
  pointer-events: auto;
}
.gfs-body--worddrift .wd-screen.wd-screen--hidden {
  opacity: 0;
  pointer-events: none;
}
.gfs-body--worddrift .wd-screen h1 {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: clamp(22px, 3.2vw, 36px);
  font-weight: 700;
  font-style: normal;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #f0ece4;
  line-height: 1.25;
}
.gfs-body--worddrift .wd-screen p {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 12px;
  font-weight: 500;
  font-style: normal;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(237, 232, 221, 0.52);
  line-height: 2;
  text-align: center;
}
.gfs-body--worddrift .wd-sbtn {
  font-family: "Space Mono", ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #f0ece4;
  background: transparent;
  border: 0.5px solid rgba(240, 236, 228, 0.2);
  padding: 12px 32px;
  cursor: pointer;
  margin-top: 8px;
  transition: border-color 0.2s;
  pointer-events: auto;
}
.gfs-body--worddrift .wd-sbtn:hover {
  border-color: #f0ece4;
}
.gfs-body--worddrift #wd-final-num {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: clamp(48px, 10vw, 72px);
  font-weight: 700;
  font-style: normal;
  letter-spacing: 0.03em;
  color: #f0ece4;
  line-height: 1;
}

/* Type Speed (Playroom fullscreen) — quote text Space Mono · HUD IBM Plex (Word Drift palette) */
body.playroom-ts-open #cursor,
body.playroom-ts-open #cursor2 {
  opacity: 0 !important;
  pointer-events: none;
}

.game-fullscreen:has(.gfs-body--typespeed[data-theme='dark']) {
  background: #080806;
}

.game-fullscreen:has(.gfs-body--typespeed[data-theme='light']) {
  background: var(--surface)fff;
}

/* .gfs-body also uses z-index:1; CLOSE must stack above or it sits under the game layer */
.game-fullscreen:has(.gfs-body--typespeed) .gfs-close {
  z-index: 10050;
}

.game-fullscreen:has(.gfs-body--typespeed[data-theme='dark']) .gfs-close {
  color: rgba(237, 232, 221, 0.78);
  opacity: 1;
}

.game-fullscreen:has(.gfs-body--typespeed[data-theme='dark']) .gfs-close:hover {
  color: #f0ece4;
  opacity: 1;
}

.game-fullscreen:has(.gfs-body--typespeed[data-theme='light']) .gfs-close {
  color: #0d0b09;
  opacity: 1;
  text-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.92),
    0 1px 2px rgba(255, 255, 255, 0.65);
}

.game-fullscreen:has(.gfs-body--typespeed[data-theme='light']) .gfs-close:hover {
  color: #070605;
}

.gfs-body--typespeed {
  --ts-bg: #080806;
  --ts-text: #f0ece4;
  --ts-dim: rgba(240, 236, 228, 0.45);
  --ts-dimmer: rgba(240, 236, 228, 0.52);
  --ts-done: rgba(240, 236, 228, 0.62);
  --ts-error: rgba(220, 80, 80, 0.85);
  --ts-b: rgba(240, 236, 228, 0.1);

  flex: 1;
  align-self: stretch;
  width: 100%;
  max-width: none;
  min-height: 0;
  padding: 0 !important;
  margin: 0;
  overflow: hidden;
  position: relative;
  background: var(--ts-bg);
  color: var(--ts-text);
  cursor: none;
}

.gfs-body--typespeed[data-theme="light"] {
  --ts-bg: #ffffff;
  --ts-text: #1a1714;
  --ts-dim: rgba(26, 23, 20, 0.58);
  --ts-dimmer: rgba(26, 23, 20, 0.58);
  --ts-done: rgba(26, 23, 20, 0.72);
  --ts-error: rgba(180, 40, 40, 0.85);
  --ts-b: rgba(26, 23, 20, 0.15);
}

.gfs-body--typespeed[data-theme="light"]::before {
  opacity: 0;
}

.gfs-body--typespeed::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  background-size: 200px;
}

.gfs-body--typespeed > * {
  position: relative;
  z-index: 1;
}

.gfs-body--typespeed #ts-cur {
  position: fixed;
  z-index: 9999;
  pointer-events: none;
  width: 2px;
  height: 20px;
  background: var(--ts-text);
  transform: translate(-50%, -50%);
  opacity: 0.6;
}

.gfs-body--typespeed #ts-type-input {
  position: fixed;
  top: -100px;
  left: -100px;
  opacity: 0;
  pointer-events: none;
  font-family: inherit;
  font-size: 16px;
}

.gfs-body--typespeed .ts-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 clamp(92px, 14vw, 152px);
  border-bottom: 0.5px solid var(--ts-b);
  background: rgba(8, 8, 6, 0.92);
  backdrop-filter: blur(20px);
  z-index: 10;
  pointer-events: auto;
}

.gfs-body--typespeed .ts-topbar-lead {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: clamp(92px, 14vw, 152px);
  pointer-events: none;
}

.gfs-body--typespeed[data-theme="light"] .ts-topbar {
  background: rgba(255, 255, 255, 0.95);
}

.gfs-body--typespeed #ts-game-label {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: clamp(16px, 2.15vw, 22px);
  font-weight: 700;
  font-style: normal;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(237, 232, 221, 0.92);
  white-space: nowrap;
  pointer-events: none;
}

.gfs-body--typespeed[data-theme="light"] #ts-game-label {
  color: rgba(26, 23, 20, 0.88);
}

.gfs-body--typespeed .ts-topbar-right {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.5vw, 22px);
  padding-right: clamp(92px, 14vw, 152px);
}

.gfs-body--typespeed #ts-theme-toggle {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--ts-dimmer);
  background: transparent;
  border: none;
  cursor: none;
  padding: 0;
}

.gfs-body--typespeed .ts-restart-btn {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--ts-dimmer);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.gfs-body--typespeed .ts-restart-btn:hover {
  color: var(--ts-text);
}

.gfs-body--typespeed #ts-top-right {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ts-dimmer);
}

.gfs-body--typespeed #ts-stats-bar {
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  min-height: 44px;
  height: auto;
  padding: 8px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  border-bottom: 0.5px solid var(--ts-b);
  z-index: 10;
}

.gfs-body--typespeed .ts-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.gfs-body--typespeed .ts-stat-label {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ts-dimmer);
}

.gfs-body--typespeed .ts-stat-val {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 700;
  font-style: normal;
  letter-spacing: 0.02em;
  color: var(--ts-text);
  line-height: 1;
  min-width: 56px;
  text-align: right;
}

.gfs-body--typespeed #ts-mode-bar {
  position: fixed;
  top: 112px;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 12px 0;
  z-index: 10;
}

.gfs-body--typespeed .ts-mode-btn {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ts-dimmer);
  background: transparent;
  border: none;
  padding: 8px 22px;
  cursor: none;
  border-bottom: 2px solid transparent;
  transition:
    color 0.2s,
    border-color 0.2s;
}

.gfs-body--typespeed .ts-mode-btn:hover:not(.ts-mode-btn--active) {
  color: var(--ts-text);
}

.gfs-body--typespeed .ts-mode-btn--active {
  color: var(--ts-text);
  border-bottom-color: currentColor;
}

.gfs-body--typespeed .ts-mode-sep {
  color: var(--ts-dimmer);
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 12px;
}

.gfs-body--typespeed #ts-stage {
  position: fixed;
  top: 158px;
  bottom: 88px;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  overflow-y: auto;
}

.gfs-body--typespeed #ts-quote-wrap {
  max-width: min(940px, 94vw);
  width: 100%;
  margin: 0 auto;
  padding: 12px clamp(20px, 4vw, 48px);
  box-sizing: border-box;
}

.gfs-body--typespeed #ts-attribution {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ts-dimmer);
  margin-bottom: 20px;
  opacity: 0;
  transition: opacity 0.4s;
}

.gfs-body--typespeed #ts-attribution.show {
  opacity: 1;
}

.gfs-body--typespeed #ts-quote-text {
  font-family:
    'Space Mono',
    ui-monospace,
    monospace;
  font-weight: 400;
  font-style: normal;
  font-size: clamp(18px, 2.35vw, 28px);
  line-height: 1.8;
  letter-spacing: 0.03em;
  color: var(--ts-dim);
  white-space: normal;
  overflow-wrap: break-word;
  word-wrap: break-word;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.gfs-body--typespeed #ts-quote-text .ts-letter {
  display: inline;
  position: relative;
}

.gfs-body--typespeed .ts-letter {
  position: relative;
  transition: color 0.08s;
}

.gfs-body--typespeed .ts-letter.done {
  color: var(--ts-done);
}

.gfs-body--typespeed .ts-letter.error {
  color: var(--ts-error);
  text-decoration: underline;
  text-decoration-color: var(--ts-error);
}

.gfs-body--typespeed .ts-letter.ts-letter--current {
  color: var(--ts-text);
  font-weight: 700;
}

.gfs-body--typespeed .ts-letter.ts-letter--current::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  max-width: 1.1em;
  height: 2px;
  background: var(--ts-text);
  animation: ts-blink 0.8s infinite;
}

@keyframes ts-blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

.gfs-body--typespeed #ts-start-overlay {
  /* Same vertical band as #ts-stage so hint stays above HUD; pin to top — avoids stacking with centred quote text */
  position: fixed;
  top: 158px;
  bottom: 88px;
  left: 0;
  right: 0;
  z-index: 12;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 6px;
  pointer-events: none;
  transition: opacity 0.4s;
  box-sizing: border-box;
}

.gfs-body--typespeed #ts-start-msg {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: clamp(11px, 1.35vw, 13px);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(237, 232, 221, 0.88);
  text-align: center;
  max-width: min(560px, 88vw);
  line-height: 1.65;
  padding: 8px 18px;
  box-sizing: border-box;
  border-radius: 2px;
  background: rgba(8, 8, 6, 0.5);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
  animation: ts-pulse 2.5s infinite;
}

.gfs-body--typespeed[data-theme='light'] #ts-start-msg {
  color: rgba(26, 23, 20, 0.82);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 6px 20px rgba(26, 23, 20, 0.06);
}

@keyframes ts-pulse {
  0%,
  100% {
    opacity: 0.45;
  }
  50% {
    opacity: 0.9;
  }
}

.gfs-body--typespeed #ts-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  min-height: 56px;
  height: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 48px;
  border-top: 0.5px solid var(--ts-b);
  background: rgba(8, 8, 6, 0.92);
  backdrop-filter: blur(20px);
  z-index: 10;
}

.gfs-body--typespeed[data-theme="light"] #ts-bottom-bar {
  background: rgba(255, 255, 255, 0.97);
}

.gfs-body--typespeed #ts-bottom-left,
.gfs-body--typespeed #ts-bottom-right {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ts-dimmer);
}

.gfs-body--typespeed #ts-progress-wrap {
  flex: 1;
  max-width: 400px;
  margin: 0 auto;
  height: 1px;
  background: var(--ts-b);
  position: relative;
}

.gfs-body--typespeed #ts-progress-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  background: rgba(240, 236, 228, 0.35);
  width: 0%;
  transition: width 0.1s;
}

.gfs-body--typespeed[data-theme="light"] #ts-progress-fill {
  background: rgba(26, 23, 20, 0.25);
}

.gfs-body--typespeed #ts-result {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: rgba(8, 8, 6, 0.96);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s;
}

.gfs-body--typespeed[data-theme="light"] #ts-result {
  background: rgba(255, 255, 255, 0.98);
}

.gfs-body--typespeed #ts-result.show {
  opacity: 1;
  pointer-events: all;
}

.gfs-body--typespeed #ts-result-quote {
  font-family:
    'Space Mono',
    ui-monospace,
    monospace;
  font-size: clamp(14px, 1.5vw, 18px);
  font-weight: 400;
  font-style: normal;
  color: var(--ts-dim);
  text-align: center;
  max-width: 560px;
  line-height: 1.8;
  padding: 0 24px;
  margin-bottom: 12px;
}

.gfs-body--typespeed #ts-result-attr {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 8px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ts-dimmer);
  margin-bottom: 64px;
}

.gfs-body--typespeed .ts-result-stats {
  display: flex;
  gap: 64px;
  align-items: flex-end;
  margin-bottom: 48px;
  flex-wrap: wrap;
  justify-content: center;
}

.gfs-body--typespeed .ts-rs {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.gfs-body--typespeed .ts-rs-val {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: clamp(42px, 6.5vw, 72px);
  font-weight: 700;
  font-style: normal;
  letter-spacing: 0.02em;
  color: var(--ts-text);
  line-height: 1;
}

.gfs-body--typespeed .ts-rs-val--big {
  font-size: clamp(56px, 8.5vw, 96px);
}

.gfs-body--typespeed .ts-rs-label {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 7px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ts-dimmer);
}

.gfs-body--typespeed #ts-result-comment {
  font-family:
    'Space Mono',
    ui-monospace,
    monospace;
  font-size: clamp(12px, 1.3vw, 15px);
  font-weight: 400;
  font-style: normal;
  color: var(--ts-dim);
  text-align: center;
  margin-bottom: 48px;
  min-height: 24px;
  padding: 0 24px;
}

.gfs-body--typespeed .ts-result-btns {
  display: flex;
  gap: 12px;
}

.gfs-body--typespeed .ts-rbtn {
  font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ts-text);
  background: transparent;
  border: 0.5px solid rgba(240, 236, 228, 0.2);
  padding: 12px 28px;
  cursor: pointer;
  transition: border-color 0.2s;
}

.gfs-body--typespeed[data-theme="light"] .ts-rbtn {
  border-color: rgba(26, 23, 20, 0.2);
}

.gfs-body--typespeed .ts-rbtn:hover {
  border-color: var(--ts-text);
}

.gfs-body--typespeed .ts-rbtn--secondary {
  color: var(--ts-dimmer);
}

.gfs-body {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 60px;
  position: relative;
  z-index: 1;
}
.gfs-title { font-size: clamp(40px, 8vw, 100px); font-weight: 500; letter-spacing: -0.02em; margin-bottom: 20px; }
.gfs-desc  { font-size: 14px; opacity: 0.5; margin-bottom: 40px; max-width: 32em; line-height: 1.65; text-align: center; }
.gfs-soon  { font-size: 11px; letter-spacing: 0.1em; opacity: 0.3; }

.gfs-body--scroll {
  justify-content: flex-start;
  overflow-y: auto;
  padding-top: 52px;
  padding-bottom: 48px;
}

/* Sudoku (Playroom fullscreen) — UI chrome monochrome; board keeps flat zone colours */
.gfs-body--sudoku {
  align-items: stretch;
  align-self: center;
  width: min(440px, 94vw);
  max-width: 100%;
}

.sud-head { text-align: center; margin-bottom: 22px; }
.sud-kicker {
  font-size: 9px; letter-spacing: 0.14em; color: var(--text);
  opacity: 0.4; margin-bottom: 8px;
}
.sud-title-head {
  font-size: clamp(22px, 4vw, 28px); font-weight: 600;
  letter-spacing: 0.06em; margin-bottom: 10px;
  color: var(--text);
}
.sud-hint {
  font-size: 10px; color: var(--text);
  opacity: 0.45; letter-spacing: 0.04em;
}

.sud-toolbar {
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: center;
  column-gap: 12px;
  row-gap: 8px;
  margin-bottom: 20px;
}
.sud-tool-label {
  font-size: 9px; letter-spacing: 0.1em; color: var(--text);
  opacity: 0.42; margin-right: 0;
}
.sud-diff-group {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--border);
}
.sud-diff-group .sud-btn {
  border: none;
  border-radius: 0;
  margin: 0;
}
.sud-diff-group .sud-btn:not(:first-child) {
  border-left: 1px solid var(--border);
}
.sud-btn {
  font-family: inherit; font-size: 9px; letter-spacing: 0.08em;
  border: 1px solid var(--border); padding: 6px 14px;
  color: var(--text); background: var(--surface);
  cursor: pointer;
}
.sud-btn:hover { background: var(--invert-bg); color: var(--invert-fg); }
.sud-btn--on { background: var(--invert-bg); color: var(--invert-fg); border-color: var(--invert-bg); }
.sud-btn--on:hover { opacity: 0.85; color: var(--invert-fg); }

.sud-grid {
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  width: min(360px, 88vw);
  margin: 0 auto 18px;
  box-sizing: border-box;
  padding: 14px;
  border-radius: 0;
  background: var(--elevated);
  border: 1px solid var(--border);
  box-shadow: none;
}
.sud-cell {
  -webkit-appearance: none;
  appearance: none;
  border-radius: 0;
  aspect-ratio: 1;
  width: 100%;
  box-sizing: border-box;
  padding: 0; margin: 0;
  font-family: inherit;
  font-size: clamp(12px, 3.6vw, 18px); font-weight: 600; line-height: 1;
  color: var(--text);
  border: none;
  border-right: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
  cursor: pointer;
  box-shadow: none;
  transition: transform 0.08s ease;
}
.sud-cell:active:not(:disabled) { transform: translateY(0.5px); }

.sud-zone-a:not(.sud-cell--given),
.sud-zone-b:not(.sud-cell--given),
.sud-zone-c:not(.sud-cell--given) {
  background: var(--surface-warm);
}
.sud-zone-a.sud-cell--given {
  background: #A14A2A;
  color: var(--on-dark-ui);
}
.sud-zone-b.sud-cell--given {
  background: #22a898;
  color: var(--on-dark-ui);
}
.sud-zone-c.sud-cell--given {
  background: #1a2840;
  color: #f5f7fa;
}
.sud-cell--th-t { border-top: 2px solid var(--border); }
.sud-cell--th-l { border-left: 2px solid var(--border); }
.sud-cell--th-b { border-bottom: 2px solid var(--border); }
.sud-cell--th-r { border-right: 2px solid var(--border); }
.sud-cell--bad:not(.sud-cell--given) {
  color: var(--text);
  background: #e4e4e4 !important;
  box-shadow: none;
  outline: 2px solid var(--border);
  outline-offset: -2px;
  position: relative;
  z-index: 3;
}
.sud-cell--focus:not(.sud-cell--given) {
  outline: 2px solid var(--border); outline-offset: -2px; position: relative; z-index: 2;
}
.sud-cell--given.sud-cell--focus {
  outline: 2px dashed rgba(255, 255, 255, 0.9); outline-offset: -2px; position: relative; z-index: 2;
}
.sud-msg {
  font-size: 10px; text-align: center; letter-spacing: 0.06em;
  color: var(--text);
  opacity: 0.45;
  min-height: 1.2em;
}

/* Memory Grid — board width tracks Sudoku (440 shell / ~360 playable) */
.gfs-body--memory {
  align-items: stretch;
  align-self: center;
  box-sizing: border-box;
  width: min(440px, 94vw);
  max-width: 100%;
  min-height: 0;
  overflow: hidden;
  /* Inner track matches .sud-grid content width contract */
  --mem-board-w: min(360px, 88vw);
  --mem-gap: clamp(5px, 1.35vmin, 8px);
}

/*
 * Medium is 6×4 (tall): shrink board vs viewport so laptop screens fit without scroll.
 * Hard is 6×6: larger playable width than baseline, capped by viewport height.
 */
.gfs-body--memory:has(.mem-btn[data-mem-diff='medium'].mem-btn--on) {
  --mem-gap: clamp(4px, 1vmin, 6px);
  --mem-board-w: min(
    348px,
    88vw,
    calc((4 / 6) * (100svh - 258px))
  );
}
.gfs-body--memory:has(.mem-btn[data-mem-diff='medium'].mem-btn--on) .mem-head {
  margin-bottom: 12px;
}
.gfs-body--memory:has(.mem-btn[data-mem-diff='medium'].mem-btn--on) .mem-toolbar {
  margin-bottom: 8px;
}
.gfs-body--memory:has(.mem-btn[data-mem-diff='medium'].mem-btn--on) .mem-phase {
  margin-bottom: 8px;
}
.gfs-body--memory:has(.mem-btn[data-mem-diff='medium'].mem-btn--on) .mem-grid-wrap {
  margin-bottom: 10px;
}

.gfs-body--memory:has(.mem-btn[data-mem-diff='hard'].mem-btn--on) {
  width: min(500px, 96vw);
  --mem-gap: clamp(5px, 1.35vmin, 8px);
  --mem-board-w: min(
    460px,
    94vw,
    calc(100svh - 258px)
  );
}

.mem-head { text-align: center; margin-bottom: 20px; }
.mem-kicker {
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--text);
  opacity: 0.4;
  margin-bottom: 8px;
}
.mem-title-head {
  font-size: clamp(22px, 4vw, 28px);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
  color: var(--text);
}
.mem-hint {
  font-size: 10px;
  color: var(--text);
  opacity: 0.45;
  letter-spacing: 0.04em;
  max-width: 34em;
  margin: 0 auto;
}

.mem-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  column-gap: 12px;
  row-gap: 8px;
  margin-bottom: 14px;
}
.mem-tool-label {
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--text);
  opacity: 0.42;
  margin-right: 0;
}
.mem-diff-group {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--border);
}
.mem-diff-group .mem-btn {
  border: none;
  border-radius: 0;
  margin: 0;
}
.mem-diff-group .mem-btn:not(:first-child) {
  border-left: 1px solid var(--border);
}
.mem-btn {
  font-family: inherit;
  font-size: 9px;
  letter-spacing: 0.08em;
  border: 1px solid var(--border);
  padding: 6px 14px;
  color: var(--text);
  background: var(--surface);
  cursor: pointer;
}
.mem-btn:hover { background: var(--invert-bg); color: var(--invert-fg); }
.mem-btn--on { background: var(--invert-bg); color: var(--invert-fg); border-color: var(--invert-bg); }
.mem-btn--on:hover { opacity: 0.85; color: var(--invert-fg); }

.mem-phase {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-align: center;
  margin-bottom: 12px;
  color: var(--text);
  opacity: 0.52;
}

.mem-grid-wrap {
  margin: 0 auto 18px;
  width: 100%;
  max-width: 100%;
  display: flex;
  justify-content: center;
}
.mem-playfield-shell {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 0;
  background: var(--elevated);
  box-shadow: none;
  box-sizing: border-box;
  /* Total outer width ≡ sudoku board box: content (--mem-board-w) + paddings + border */
  width: calc(var(--mem-board-w) + 26px);
  max-width: 100%;
}
.mem-grid {
  display: grid;
  gap: var(--mem-gap);
  width: 100%;
  max-width: var(--mem-board-w);
  margin: 0 auto;
  box-sizing: border-box;
}
.mem-cell {
  aspect-ratio: 1;
  width: 100%;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  border: 1px solid var(--divider);
  background: var(--surface-warm);
  cursor: pointer;
  border-radius: 0;
  -webkit-appearance: none;
  appearance: none;
  box-shadow: none;
}
.mem-cell:focus-visible {
  outline: 2px solid var(--border);
  outline-offset: 2px;
}
.mem-cell:disabled {
  cursor: default;
  opacity: 1;
}
.mem-cell--show {
  box-shadow: none;
}
.mem-cell:active:not(:disabled) {
  transform: translateY(0.5px);
}
.mem-cell.mem-cell--matched {
  outline: 1px solid var(--border);
  outline-offset: -1px;
}

.mem-msg {
  font-size: 10px;
  text-align: center;
  letter-spacing: 0.06em;
  color: var(--text);
  opacity: 0.45;
  min-height: 1.2em;
}

/* ── THINKER — centred reader + bottom index drawer ────*/
#panel-writing {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

/* Centered scrollable reading area */
.tk-reader {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 28px 24px 24px;
}
.tk-reader-inner {
  max-width: 580px;
  margin: 0 auto;
}

.tk-body-num   { font-size: 10px; opacity: 0.35; letter-spacing: 0.08em; margin-bottom: 6px; color: var(--text); }
.tk-body-date  { font-size: 10px; opacity: 0.35; letter-spacing: 0.06em; margin-bottom: 4px; }
.tk-body-cat   { font-size: 9px;  opacity: 0.3;  letter-spacing: 0.12em; margin-bottom: 28px; }
.tk-body-title {
  font-size: clamp(18px, 2.4vw, 26px); font-weight: 500;
  line-height: 1.25; margin-bottom: 28px; letter-spacing: 0.01em;
}
.tk-body-p { font-size: 13px; line-height: 1.85; opacity: 0.72; margin-bottom: 18px; }

/* Bottom navigation bar */
.tk-bar {
  height: 44px; border-top: 1px solid var(--border); flex-shrink: 0;
  display: flex; align-items: center; padding: 0 20px; gap: 12px;
  font-size: 10px; letter-spacing: 0.05em; background: var(--surface); z-index: 11;
}
.tk-nav-btn {
  font-family: inherit; font-size: 14px; opacity: 0.3; padding: 0 4px;
  transition: opacity 0.1s;
}
.tk-nav-btn:hover { opacity: 1; }
.tk-bar-info { flex: 1; opacity: 0.45; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 10px; }
.tk-index-btn {
  font-family: inherit; font-size: 9px; letter-spacing: 0.07em;
  border: 1px solid var(--border); padding: 4px 12px; flex-shrink: 0;
  transition: background 0.12s, color 0.12s;
}
.tk-index-btn:hover { background: var(--invert-bg); color: var(--invert-fg); }

/* Drawer: slides up from above the bottom bar */
.tk-drawer {
  position: absolute; left: 0; right: 0; bottom: 44px;
  background: var(--surface); border-top: 1px solid var(--border);
  transform: translateY(100%);
  transition: transform 0.32s cubic-bezier(0.4,0,0.2,1);
  max-height: 48vh; overflow-y: auto; z-index: 10;
}
.tk-drawer.open { transform: translateY(0); }
.tk-drawer-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 24px; border-bottom: 1px solid var(--border);
  font-size: 9px; letter-spacing: 0.1em; position: sticky; top: 0; background: var(--surface); z-index: 1;
}
.tk-drawer-close {
  font-family: inherit; font-size: 9px; letter-spacing: 0.07em;
  border: 1px solid var(--border); padding: 3px 10px;
  transition: background 0.12s, color 0.12s;
}
.tk-drawer-close:hover { background: var(--invert-bg); color: var(--invert-fg); }

/* Drawer list items */
.tk-drawer-row {
  display: grid; grid-template-columns: 72px 1fr 100px;
  gap: 20px; align-items: center; padding: 14px 24px;
  border-bottom: 1px solid var(--divider-soft);
  transition: background 0.1s; cursor: pointer;
}
.tk-drawer-row:hover  { background: var(--muted-fill); }
.tk-drawer-row.active { background: var(--active-fill); }
.tk-date  { font-size: 10px; opacity: 0.35; }
.tk-title { font-size: 11px; font-weight: 500; letter-spacing: 0.02em; line-height: 1.35; }
.tk-desc  { font-size: 10px; opacity: 0.38; line-height: 1.45; margin-top: 3px; }
.tk-tag   { font-size: 9px; opacity: 0.38; text-align: right; white-space: nowrap; }

/* ── ABOUT ───────────────────────────────────────────*/
.about-col { padding: 48px 40px 80px; border-right: 1px solid var(--border); }
.about-col:last-child { border-right: none; }
.about-col .about-italic + .about-sig {
  margin-top: calc(13px * 1.8 * 2);
}

.about-col p { font-size: 13px; line-height: 1.8; margin-bottom: 22px; }
.about-italic {
  font-family: 'Spectral', Georgia, 'Times New Roman', serif;
  font-style: italic;
  font-weight: 300;
  opacity: 0.6;
}
.about-col .about-italic { margin-bottom: 0; }
.about-label  { font-size: 9px; letter-spacing: 0.1em; opacity: 0.4; margin-top: 32px; margin-bottom: 10px !important; }
.about-sig    { font-size: 14px; letter-spacing: 0.04em; color: var(--text); opacity: 0.82; margin-bottom: 0; }
.about-sig em {
  font-family: 'Spectral', Georgia, 'Times New Roman', serif;
  font-style: italic;
  font-weight: 400;
  font-synthesis: none;
}
.text-link { transition: opacity 0.1s; }
.text-link:hover { opacity: 0.45; text-decoration: underline; }

/* ── IMAGE SHEET ─────────────────────────────────────*/
.img-sheet {
  position: fixed; left: 0; right: 0; bottom: 0;
  height: 32vh; background: var(--surface); border-top: 1px solid var(--border);
  z-index: 400; transform: translateY(100%); transition: transform 0.28s ease;
}
.img-sheet.open { transform: translateY(0); }
.sheet-close {
  position: absolute; top: 14px; right: 24px;
  font-family: inherit; font-size: 10px; letter-spacing: 0.08em;
  opacity: 0.35; transition: opacity 0.1s; z-index: 1;
}
.sheet-close:hover { opacity: 1; }
.sheet-body  { padding: 22px 40px; max-width: 640px; overflow-y: auto; height: 100%; }
.sheet-cat   { font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase; opacity: 0.4; margin-bottom: 8px; }
.sheet-title { font-size: 18px; margin-bottom: 8px; line-height: 1.2; }
.sheet-loc   { font-size: 10px; opacity: 0.4; letter-spacing: 0.04em; margin-bottom: 12px; }
.sheet-desc  { font-size: 12px; line-height: 1.75; opacity: 0.65; }

/* ── RESPONSIVE ─────────────────────────────────────*/
@media (max-width: 900px) {
  .home-nav {
    gap: 6px clamp(10px, 2vw, 20px);
  }

  .home-nav .nav-link {
    font-size: 11px;
  }

  .builder-recent { grid-template-columns: 1fr; }
  .builder-page-inner { padding-left: 20px; padding-right: 20px; }
  .builder-work-row {
    grid-template-columns: 36px 1fr auto 48px;
    gap: 10px;
    padding: 14px 0;
  }
  .tk-reader { padding: 40px 16px 24px; }
  .tk-drawer-row { grid-template-columns: 60px 1fr; }
  .tk-tag { display: none; }
  .obs-flow-root { padding: 18px 14px 40px; }
  .panel-body { padding: 40px 20px 60px; }
  .panel-body--about { grid-template-columns: 1fr; }
  .about-col { border-right: none; border-bottom: 1px solid var(--border); }
  .gnav-link { flex: none; padding: 0 12px; font-size: 10px; }
  .player-grid { width: 95vw; height: auto; grid-template-columns: 1fr; grid-template-rows: auto; }
  .player-cell:nth-child(2n)  { border-right: none; }
  .player-cell:nth-child(n+3) { border-bottom: 1px solid var(--border); }
  .player-cell:last-child     { border-bottom: none; }
  .player-wrap { padding: 20px; }
}

/* ── Dashboard case study standalone (dashboard-case-study.html) ── */
html.page-dashboard-case,
html.page-dashboard-case body {
  height: auto;
  min-height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
}

html.page-dashboard-case .global-nav.visible {
  opacity: 1;
  pointer-events: all;
}

.dc-main {
  padding-top: 40px;
  padding-bottom: 0;
}

.dc-hero {
  padding: 80px 48px 48px;
  font-family:
    'IBM Plex Mono',
    'Courier New',
    Courier,
    monospace;
}

.dc-hero-label {
  font-size: 9px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  opacity: 0.3;
  margin: 0;
}

.dc-hero-title {
  font-family: inherit;
  font-weight: 700;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  color: var(--text);
}

.dc-hero-sub {
  font-family: inherit;
  font-size: 10px;
  opacity: 0.3;
  margin: 8px 0 0;
}

.dc-video-slot {
  margin-top: 48px;
  width: 100%;
}

html.page-dashboard-case .dc-video-slot .cs-vid-container {
  border: none;
  background: #111;
}

html.page-dashboard-case .dc-video-slot .cs-vid-container .cs-vid {
  max-height: none;
  aspect-ratio: 16 / 9;
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
  background: #111;
}

html.page-dashboard-case .dc-video-slot .vid-bar {
  background: var(--surface);
  flex-shrink: 0;
}

.dc-diagram-strip {
  margin-top: 80px;
  padding: 0 48px;
  max-width: min(1320px, 100%);
  margin-left: 0;
  margin-right: auto;
  box-sizing: border-box;
}

.dc-strip-label {
  font-family:
    'IBM Plex Mono',
    'Courier New',
    Courier,
    monospace;
  font-size: 9px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  opacity: 0.3;
  margin: 0 0 24px;
  color: var(--text);
}

.dc-fig-zoom {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  cursor: zoom-in;
  font: inherit;
  text-align: left;
  outline: none;
}

.dc-fig-zoom::-moz-focus-inner {
  border: 0;
  padding: 0;
}

.dc-fig-zoom:hover img,
.dc-fig-zoom:focus-visible img {
  outline: 1px solid var(--divider-strong);
}

.dc-fig-zoom img {
  width: 100%;
  height: auto;
  display: block;
}

.dc-lb {
  position: fixed;
  inset: 0;
  z-index: 10005;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 48px;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.94);
}

.dc-lb.open {
  display: flex;
}

.dc-lb-img {
  max-width: min(96vw, 1400px);
  max-height: 88vh;
  width: auto;
  height: auto;
  object-fit: contain;
}

.dc-lb-close {
  position: absolute;
  top: 28px;
  right: 32px;
  font-family:
    'IBM Plex Mono',
    'Courier New',
    Courier,
    monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  padding: 8px 12px;
  border: 1px solid var(--divider-strong);
  background: var(--surface);
  cursor: pointer;
  color: var(--text);
}

.dc-lb-close:hover {
  opacity: 0.6;
}

.dc-copy {
  margin-top: 80px;
  max-width: 680px;
  padding-left: 48px;
  padding-right: 24px;
  text-align: left;
  font-family:
    'IBM Plex Mono',
    'Courier New',
    Courier,
    monospace;
}

.dc-copy-major {
  font-size: 9px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  opacity: 0.3;
  margin: 48px 0 0;
  color: var(--text);
}

.dc-copy-major:first-child {
  margin-top: 0;
}

.dc-copy-sub {
  font-size: 11px;
  font-weight: 500;
  margin: 32px 0 8px;
  text-transform: none;
  opacity: 1;
  letter-spacing: 0;
  color: var(--text);
}

.dc-copy p {
  font-size: 13px;
  line-height: 1.9;
  opacity: 0.6;
  margin: 0 0 16px;
  color: var(--text);
}

.dc-copy .dc-copy-major + p {
  margin-top: 0;
}

.dc-contact {
  margin-top: 120px;
  padding: 48px 48px 80px;
  border-top: 0.5px solid var(--frame);
  font-family:
    'IBM Plex Mono',
    'Courier New',
    Courier,
    monospace;
}

.dc-contact-line {
  font-size: 13px;
  opacity: 0.5;
  margin: 0 0 8px;
}

.dc-contact-link {
  font-size: 13px;
  color: var(--text);
  opacity: 0.72;
  text-decoration: none;
  transition: opacity 0.1s;
}

.dc-contact-link:hover {
  opacity: 0.45;
  text-decoration: underline;
}

@media (max-width: 600px) {
  .dc-hero {
    padding: 56px 20px 32px;
  }
  .dc-copy {
    padding-left: 20px;
  }
  .dc-diagram-strip {
    padding: 0 20px;
  }
  .dc-contact {
    padding: 40px 20px 64px;
  }
}

/* ── Light / dark: polish (grain, media, overlays, grids) ── */
html[data-theme='dark'] body::after {
  opacity: 0.056;
}

html[data-theme='dark'] .carousel-stage img {
  filter: contrast(1.06) saturate(0.92) brightness(1.06);
}

html[data-theme='dark'] .sud-zone-a:not(.sud-cell--given),
html[data-theme='dark'] .sud-zone-b:not(.sud-cell--given),
html[data-theme='dark'] .sud-zone-c:not(.sud-cell--given) {
  background: #2b2e34;
}

html[data-theme='dark'] .sud-cell--bad:not(.sud-cell--given) {
  background: #3f434d !important;
  outline-color: var(--border);
}

html[data-theme='dark'] .dc-lb {
  background: rgba(12, 12, 15, 0.94);
}

html[data-theme='dark'] .dc-lb-close {
  border-color: var(--divider-strong);
  background: rgba(26, 26, 30, 0.9);
}