/* ==========================================================================
   Tokens
   Spectral color · Geist type · full-poster HUD · cut-out surfaces · viscous motion
   ========================================================================== */

:root {
  /* Shared UI tokens */
  --ink: #f4f4f0;
  --muted: #9a9fb0;
  --line: rgba(255, 255, 255, 0.14);
  --contour: rgba(255, 255, 255, 0.4);

  /* Spacing (4px base) */
  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px;
  --space-6: 24px; --space-8: 32px; --space-12: 48px; --space-16: 64px; --space-24: 96px;

  /* Type scale (fluid between 375px and 1440px) */
  --fs-display: clamp(56px, 38.3px + 4.73vw, 128px);
  --fs-h1: clamp(36px, 26.1px + 2.63vw, 64px);
  --fs-h2: clamp(22px, 20.6px + 0.38vw, 26px);
  --fs-body: clamp(16px, 15.6px + 0.09vw, 17px);
  --fs-hud: clamp(11px, 10.6px + 0.09vw, 12px);

  /* Tape padding: every text box shares one left inset so copy lines up down the page */
  --tape-x: 12px;
  --tape-pad: 10px var(--tape-x);
  --tape-pad-sm: 5px var(--tape-x);
  --tape-pad-display: 0 0.14em;

  --maxw: 1280px;
  --gutter: 24px;
  --margin: clamp(16px, 4vw, 48px);
}

/* ---------- Color ---------- */
/* --ramp is read by js/field.js to build the shader's heat gradient */
:root {
  --bg: #0b0620;
  --ramp: #30123b, #4662d7, #36aaf9, #1ae4b6, #72fe5e, #c8ef34, #faba39, #f66b19, #ca2a04;
  --accent: #faba39;
  --hot: #f66b19;
}

/* ---------- Type ---------- */
:root {
  --font-display: "Archivo", system-ui, sans-serif;
  --font-body: "Geist", system-ui, sans-serif;
  --font-hud: "Martian Mono", ui-monospace, monospace;
  --display-weight: 600; --display-style: normal; --display-case: none;
  --display-tracking: -0.03em; --display-leading: 0.95;
  --display-scale: 1;
  /* Width axes: the name runs wide like a map title block; headings a touch wide; HUD mono a touch narrow */
  --display-stretch: 125%; --h1-stretch: 112%; --hud-stretch: 87.5%;
}

/* ---------- Motion (also read by js/main.js) ---------- */
:root { --dur-s: 900ms; --dur-m: 1200ms; --dur-l: 1600ms; --ease: cubic-bezier(0.87, 0, 0.13, 1); --stagger: 80; --trail: 3; --drift: 40; }

/* ==========================================================================
   Base
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--bg); color-scheme: dark; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 var(--fs-body)/1.6 var(--font-body);
  font-stretch: var(--hud-stretch);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color var(--dur-m) var(--ease);
}
a { color: inherit; }
img, canvas { display: block; }
:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
::selection { background: var(--hot); color: #000; }

.display {
  margin: 0;
  font-family: var(--font-display);
  font-weight: var(--display-weight);
  font-style: var(--display-style);
  text-transform: var(--display-case);
  letter-spacing: var(--display-tracking);
  line-height: var(--display-leading);
  font-size: calc(var(--fs-display) * var(--display-scale));
  font-stretch: var(--display-stretch);
}
.display--sm { font-size: calc(var(--fs-h1) * var(--display-scale) * 1.15); }
.h1 {
  margin: 0 0 var(--space-6);
  font-family: var(--font-display);
  font-weight: var(--display-weight);
  text-transform: var(--display-case);
  letter-spacing: var(--display-tracking);
  line-height: 1;
  font-size: calc(var(--fs-h1) * var(--display-scale));
  font-stretch: var(--h1-stretch);
}
.h2 { margin: 0; font: 600 var(--fs-h2)/1.25 var(--font-body); letter-spacing: -0.01em; }
.hud-text, .eyebrow, .tags li, .nav a, .btn, .sector-label, .readout, .when, .status, .footer {
  font-family: var(--font-hud);
}

/* ==========================================================================
   Field + fallback
   ========================================================================== */

.field, .field-fallback {
  position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: 0; pointer-events: none;
}
.field { opacity: 0; transition: opacity 1.2s ease; }
.field.is-ready { opacity: 1; }
.field-fallback { display: none; }
/* Loading screen: covers the page until fonts, the field and assets are in (see the inline script in index.html) */
.loader { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; background: var(--bg); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity 0.45s var(--ease), visibility 0s linear 0.45s; }
.loading .loader { opacity: 1; visibility: visible; pointer-events: auto; transition: none; }
.loading body { overflow: hidden; }
.loader-box { display: grid; justify-items: start; gap: 10px; font-family: var(--font-hud); text-transform: uppercase; letter-spacing: 0.08em; }
.loader-label { font-size: var(--fs-hud); color: var(--muted); }
.loader-label::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 8px; background: #f66b19; box-shadow: 0 0 8px #f66b19; animation: stats-blink 1.6s steps(2) infinite; }
.loader-pct { font-size: clamp(40px, 6vw, 64px); line-height: 1; color: var(--ink); font-variant-numeric: tabular-nums; letter-spacing: 0.02em; }
.loader-bar { width: 180px; height: 6px; border: 1px solid rgba(255,255,255,0.5); border-top: 0; position: relative; }
.loader-bar i { position: absolute; left: 0; top: 0; bottom: 0; width: 100%; background: #fff; transform-origin: left; transform: scaleX(var(--load, 0)); }

/* Scan-in (js adds .intro on a fresh load): a sweep line uncovers the field, then hands over */
@property --scan { syntax: '<percentage>'; inherits: false; initial-value: 112%; }
.intro .field {
  opacity: 1; transition: none;
  -webkit-mask-image: linear-gradient(90deg, #000 calc(var(--scan) - 8%), rgba(0,0,0,0.4) var(--scan), transparent calc(var(--scan) + 0.5%));
  mask-image: linear-gradient(90deg, #000 calc(var(--scan) - 8%), rgba(0,0,0,0.4) var(--scan), transparent calc(var(--scan) + 0.5%));
  animation: field-scan 1.5s cubic-bezier(0.6, 0.05, 0.3, 1) 0.15s both;
}
@keyframes field-scan { from { --scan: -8%; } to { --scan: 112%; } }
.scanline { position: fixed; top: 0; bottom: 0; left: 0; width: 1px; z-index: 4; pointer-events: none; background: #fff; box-shadow: 0 0 14px 2px rgba(255,255,255,0.55); animation: scanline 1.5s cubic-bezier(0.6, 0.05, 0.3, 1) 0.15s both; }
.scanline span { position: absolute; top: 50%; left: 10px; padding: var(--tape-pad-sm); background: var(--bg); font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; color: var(--ink); white-space: nowrap; font-variant-numeric: tabular-nums; }
@keyframes scanline { from { transform: translateX(-8vw); } to { transform: translateX(112vw); } }
.intro .hero .actions { animation: intro-up 0.6s var(--ease) 1.05s both; }
.intro .scalebar span { transform-origin: left; animation: intro-grow 0.7s var(--ease) 1.2s both; }
@keyframes intro-up { from { opacity: 0; transform: translateY(10px); } }
@keyframes intro-grow { from { transform: scaleX(0); } }

.no-webgl .field-fallback {
  display: block;
  background:
    radial-gradient(40% 50% at 70% 40%, var(--hot), transparent 70%),
    radial-gradient(60% 60% at 30% 70%, var(--accent), transparent 70%),
    var(--bg);
  opacity: 0.45;
}

/* ==========================================================================
   HUD layer
   ========================================================================== */

.hud { position: fixed; inset: 0; z-index: 1; pointer-events: none; color: var(--muted); font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; }
.hud > * { transition: opacity var(--dur-m) var(--ease); }

.hud-grid, .hud-subgrid { position: absolute; inset: 0; }
.hud-grid {
  --col: calc((min(100vw, var(--maxw)) - 2 * var(--margin)) / 6);
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: var(--col) var(--col);
  background-position: center center;
}
.hud-subgrid {
  --col: calc((min(100vw, var(--maxw)) - 2 * var(--margin)) / 24);
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: var(--col) var(--col);
  background-position: center center;
}
.hud-ticks { position: absolute; }
.hud-ticks--top { top: 64px; left: var(--margin); right: var(--margin); height: 8px;
  background: repeating-linear-gradient(to right, rgba(255,255,255,0.3) 0 1px, transparent 1px 12px); }
.hud-ticks--left { top: 80px; bottom: 24px; left: 10px; width: 8px;
  background: repeating-linear-gradient(to bottom, rgba(255,255,255,0.3) 0 1px, transparent 1px 12px); }

/* Rail markers track the cursor exactly along the top and left rulers */
.rail-marker { position: absolute; left: 0; top: 0; will-change: transform; color: var(--ink); transition: opacity var(--dur-s) var(--ease); }
.rail-marker--x { width: 1px; height: 14px; top: -3px; background: #fff; box-shadow: 0 0 0 1px rgba(0,0,0,0.5); }
.rail-marker--x em { position: absolute; top: 16px; left: 0; transform: translateX(-50%); font-style: normal; font-variant-numeric: tabular-nums; }
.rail-marker--y { height: 1px; width: 14px; left: -3px; background: #fff; box-shadow: 0 0 0 1px rgba(0,0,0,0.5); }
.rail-marker--y em { position: absolute; left: 18px; top: 0; transform: translateY(-50%); font-style: normal; font-variant-numeric: tabular-nums; }

/* Sector tag rides next to the cursor; hidden over anything clickable */
.cursor-tag {
  position: absolute; left: 0; top: 0; padding: 6px 10px; white-space: nowrap; line-height: 1.6;
  color: var(--muted); background: color-mix(in srgb, var(--bg) 70%, transparent);
  will-change: transform; transition: opacity var(--dur-s) var(--ease);
}
.cursor-tag-title { color: var(--ink); }
.cursor-tag.is-hidden { opacity: 0; }
.cursor-tag { background: var(--bg); color: rgba(255,255,255,0.75); }
@media (hover: none) { .cursor-tag { display: none; } }
.js:not(.has-pointer) :is(.cursor-tag, .reticle, .rail-marker) { opacity: 0 !important; }

.reticle { position: absolute; left: 0; top: 0; width: 0; height: 0; will-change: transform; }
.reticle-ring { position: absolute; left: -12px; top: -12px; width: 24px; height: 24px; border: 1px solid rgba(255,255,255,0.7); border-radius: 50%; }
.reticle-ring::before, .reticle-ring::after { content: ""; position: absolute; background: rgba(255,255,255,0.9); }
.reticle-ring::before { left: 11px; top: 4px; width: 1px; height: 14px; }
.reticle-ring::after { top: 11px; left: 4px; height: 1px; width: 14px; }
@media (hover: none) { .reticle { display: none; } }
.reticle-x, .reticle-y { position: absolute; background: rgba(255,255,255,0.12); }
.reticle-x { left: -100vw; width: 200vw; height: 1px; top: 0; }
.reticle-y { top: -100vh; height: 200vh; width: 1px; left: 0; }

.readout { position: absolute; left: var(--margin); bottom: 20px; display: flex; gap: 16px; font-variant-numeric: tabular-nums; color: rgba(255,255,255,0.8); }
.scalebar { position: absolute; right: calc(var(--margin) + 260px); bottom: 20px; display: flex; align-items: center; gap: 8px; }
.scalebar span { width: 100px; height: 6px; border: 1px solid rgba(255,255,255,0.5); border-top: 0; }
.scalebar em { font-style: normal; color: rgba(255,255,255,0.8); }


.sector-label { display: none; position: absolute; top: 72px; right: var(--margin); margin: 0; font-size: var(--fs-hud); letter-spacing: 0.08em; color: var(--muted); text-align: right; line-height: 1.6; z-index: 2; padding: 4px 8px; background: color-mix(in srgb, var(--bg) 70%, transparent); }
.sector-label::before { content: "+"; position: absolute; right: -18px; top: -10px; color: var(--ink); font-size: 16px; }


/* ==========================================================================
   Nav
   ========================================================================== */

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 10;
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--space-4) var(--margin);
  font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase;
}
.wordmark { text-decoration: none; font-weight: 600; font-size: 14px; letter-spacing: 0.1em; }
.wordmark span { color: var(--muted); }
.nav nav { display: flex; gap: var(--space-6); }
.nav a { text-decoration: none; color: var(--muted); position: relative; padding: 6px 0; transition: color var(--dur-s) var(--ease); }
.nav a i { font-style: normal; opacity: 0.6; margin-right: 4px; }
.nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, var(--ramp));
  transform: scaleX(0); transform-origin: left; transition: transform var(--dur-m) var(--ease);
}
.nav a:hover, .nav a.is-current { color: var(--ink); }
.nav a:hover::after, .nav a.is-current::after { transform: scaleX(1); }
@media (max-width: 640px) { .nav { font-size: 10px; letter-spacing: 0.02em; font-stretch: 75%; } .nav nav { gap: 8px; padding: 4px 10px; } .nav a i { display: none; } }
/* Past the hero, a short fade under the nav so copy doesn't scroll up beside the links */
.nav::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 76px; z-index: -1; pointer-events: none; opacity: 0;
  background: linear-gradient(var(--bg), color-mix(in srgb, var(--bg) 75%, transparent) 55%, transparent);
  transition: opacity var(--dur-m) var(--ease); }
.past-hero .nav::before { opacity: 1; }

/* ==========================================================================
   Layout + sections
   ========================================================================== */

main { position: relative; z-index: 2; }

/* No scrims: the field stays fully visible. The name carries a shadow; eyebrow and lede sit on tape */
.scrim-top { display: none; }
.hero-inner .display { text-shadow: 0 1px 2px rgba(0,0,0,0.6), 0 0 24px rgba(0,0,0,0.45); }
.section, .hero {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--space-24) var(--margin);
}
.hero { min-height: 100vh; display: flex; align-items: center; padding-top: 120px; }
.hero-inner { max-width: 820px; }
.eyebrow { width: fit-content; margin: 0 0 var(--space-6); font-size: var(--fs-hud); letter-spacing: 0.12em; color: rgba(255,255,255,0.75); text-transform: uppercase; }
/* The eyebrow runs down the hero's right border, turned 90°, mirroring the left ruler */
.hero .eyebrow { position: absolute; right: calc(12px - max(0px, (100vw - var(--maxw)) / 2)); top: 50%; margin: 0; writing-mode: vertical-rl; transform: translateY(-50%); white-space: nowrap; }
.lede { width: fit-content; max-width: 36ch; margin: var(--space-6) 0 var(--space-8); padding: var(--tape-pad); background: var(--bg); font-size: clamp(18px, 1.5vw, 22px); line-height: 1.5; color: var(--ink); }
.status { margin: var(--space-8) 0 0; display: flex; gap: 8px; align-items: center; font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--hot); box-shadow: 0 0 12px var(--hot); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.35; } }

.section-title { margin-bottom: var(--space-12); }
.actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.copy-status { min-height: 1.5em; margin: var(--space-3) 0 0; font-family: var(--font-hud); font-size: var(--fs-hud); color: var(--muted); letter-spacing: 0.08em; }


.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: var(--space-6) 0 0; padding: 0; }
.tags li { font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; padding: 4px 8px; border: 1px solid var(--line); color: var(--muted); transition: border-color var(--dur-s) var(--ease), color var(--dur-s) var(--ease); }

.when { font-size: var(--fs-hud); letter-spacing: 0.08em; color: var(--muted); padding-top: 6px; font-variant-numeric: tabular-nums; }

.contact { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); align-items: center; gap: var(--space-8); }
.contact .panel { width: 100%; }
.contact .display { margin-bottom: var(--space-8); }

/* Debrief: hairline readout cells, same instrument language as the project stats */
.debrief { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: min(420px, 100%); margin: var(--space-8) 0 0; background: var(--bg); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.debrief div { padding: 10px var(--tape-x); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.debrief dt { font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.debrief dd { margin: 4px 0 0; font-family: var(--font-hud); font-size: 14px; letter-spacing: 0.06em; color: var(--ink); font-variant-numeric: tabular-nums; }
.debrief div:first-child dd { color: var(--accent); }
.panel p.debrief-hint { margin-top: 2px; padding: var(--tape-pad-sm); font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.debrief-hint::after { content: " →"; }

/* Uplinks: social points on the map */
.uplinks { position: relative; height: min(68vh, 560px); }
.uplink-route { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.uplink-route polyline { fill: none; stroke: rgba(255,255,255,0.45); stroke-width: 1; stroke-dasharray: 4 6; }
.uplink { position: absolute; left: calc(var(--x) * 100%); top: calc(var(--y) * 100%); width: 64px; height: 64px; margin: -32px 0 0 -32px; padding: 0; display: block; background: none; border: 0; color: var(--ink); cursor: pointer; text-decoration: none; z-index: 2; }
.uplink .uplink-mark { position: absolute; inset: 0; display: grid; place-items: center; background: var(--bg); transition: background-color var(--dur-s) var(--ease), transform var(--dur-s) var(--ease); }
.uplink-mark img { width: 26px; height: 26px; filter: invert(1); transition: filter var(--dur-s) var(--ease); }
.uplink-mark::before { --l: 9px; }
/* Crosshair ticks reaching out from the mark */
.uplink::before, .uplink::after { content: ""; position: absolute; background: rgba(255,255,255,0.7); transition: transform var(--dur-m) var(--ease); }
.uplink::before { left: 50%; top: -14px; bottom: -14px; width: 1px; }
.uplink::after { top: 50%; left: -14px; right: -14px; height: 1px; }
.uplink-label { position: absolute; left: 80px; top: 50%; transform: translateY(-50%); padding: 6px var(--tape-x); background: var(--bg); white-space: nowrap; font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); text-align: left; line-height: 1.6; transition: color var(--dur-s) var(--ease); }
.uplink-label b { color: var(--ink); font-weight: 500; }
.uplink-handle { color: var(--ink); text-transform: none; letter-spacing: 0.02em; }
.uplink--left .uplink-label { left: auto; right: 80px; text-align: right; }
.uplink:is(:hover, :focus-visible, .is-hot) .uplink-mark { background: #fff; transform: scale(1.12); }
.uplink:is(:hover, :focus-visible, .is-hot) .uplink-mark img { filter: none; }
.uplink:is(:hover, :focus-visible, .is-hot)::before { transform: scaleY(1.6); }
.uplink:is(:hover, :focus-visible, .is-hot)::after { transform: scaleX(1.6); }
.uplink:is(:hover, :focus-visible, .is-hot) .uplink-label { color: var(--ink); }
.uplink:is(:hover, :focus-visible, .is-hot) .uplink-mark::after { content: ""; position: absolute; inset: -8px; border: 1px solid #fff; animation: ping 1.6s var(--ease) infinite; }
.uplink:focus-visible { outline: none; }

@media (max-width: 860px) {
  .contact { grid-template-columns: 1fr; align-content: center; }
  .uplinks { height: 56vh; }
  .uplink-label { left: 74px; }
  .uplink--left .uplink-label { right: 74px; }
}

.footer { position: relative; z-index: 2; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; max-width: var(--maxw); margin: 0 auto; padding: var(--space-8) var(--margin) 72px; font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.footer { align-items: center; color: rgba(255,255,255,0.75); }
.footer p, .footer .linkish { margin: 0; padding: var(--tape-pad-sm); background: var(--bg); }
.linkish { background: none; border: 0; color: inherit; font: inherit; letter-spacing: inherit; text-transform: inherit; text-decoration: underline; cursor: pointer; padding: 0; min-height: 44px; }

/* ==========================================================================
   Surfaces: panels, buttons, cards
   ========================================================================== */

.btn {
  display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 20px;
  font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; text-decoration: none;
  cursor: pointer; border: 1px solid transparent; background: none; color: var(--ink);
  transition: background-color var(--dur-s) var(--ease), color var(--dur-s) var(--ease), border-color var(--dur-s) var(--ease), box-shadow var(--dur-m) var(--ease), transform var(--dur-s) var(--ease);
}
.btn span { transition: transform var(--dur-s) var(--ease); }
.btn:hover span { transform: translateX(4px); }

/* Cut-out surfaces: no glass. Text sits on solid blocks of --bg, like tape on the map,
   and white L-brackets mark the corners of framed things. */
:root { --corner: 12px; }
.tape, .section-title, .panel :is(.h1, .display), .work-hint { background: var(--bg); box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.section-title, .panel :is(.h1, .display) { display: inline; padding: var(--tape-pad-display); line-height: 1.15; }
.section-title { display: inline-block; }
.panel { padding: 0; }
.panel .h1 + *, .panel .display + * { margin-top: var(--space-6); }
.panel p:not(.copy-status) { display: block; width: fit-content; background: var(--bg); padding: var(--tape-pad); }
.copy-status { background: none; }
.nav nav { padding: 4px 20px; }
.tags li { background: var(--bg); }

.corners { position: relative; }
:is(.corners, .nav nav, .cursor-tag)::before {
  content: ""; position: absolute; inset: -1px; pointer-events: none; z-index: 1;
  --c: #fff; --l: var(--corner); --w: 2px;
  background:
    linear-gradient(var(--c) 0 0) top left / var(--l) var(--w),
    linear-gradient(var(--c) 0 0) top left / var(--w) var(--l),
    linear-gradient(var(--c) 0 0) top right / var(--l) var(--w),
    linear-gradient(var(--c) 0 0) top right / var(--w) var(--l),
    linear-gradient(var(--c) 0 0) bottom left / var(--l) var(--w),
    linear-gradient(var(--c) 0 0) bottom left / var(--w) var(--l),
    linear-gradient(var(--c) 0 0) bottom right / var(--l) var(--w),
    linear-gradient(var(--c) 0 0) bottom right / var(--w) var(--l);
  background-repeat: no-repeat;
  transition: inset var(--dur-m) var(--ease);
}
:is(.nav nav, .cursor-tag)::before { --l: 7px; --w: 1.5px; }
.nav nav { position: relative; }

/* Buttons: primary = solid white block; secondary = text on tape with a ramp underline sweep */
.btn--primary { background: #fff; color: #0b0b10; }
.btn--primary:hover { background: #0b0b10; color: #fff; box-shadow: inset 0 0 0 1px #fff; }
.btn--ghost {
  background-color: var(--bg);
  background-image: linear-gradient(90deg, var(--ramp)); background-size: 0% 2px; background-position: 0 100%; background-repeat: no-repeat;
  box-shadow: inset 0 -1px 0 rgba(255,255,255,0.4);
  transition: background-size var(--dur-m) var(--ease), color var(--dur-s) var(--ease);
}
.btn--ghost:hover { background-size: 100% 2px; }

/* ==========================================================================
   Skills: square tech tiles with logos, wide skill tiles; click flips to a reading
   ========================================================================== */

/* 39 squares + 7 wides (3 cells each) = 60 cells: even rows at 10, 6 or 3 columns */
.sk-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(10, 1fr); grid-auto-flow: dense; gap: 8px; }
@media (max-width: 960px) { .sk-grid { grid-template-columns: repeat(6, 1fr); } }
@media (max-width: 640px) {
  .sk-grid { grid-template-columns: repeat(3, 1fr); }
  /* Wide skill tiles don't flip on phones: a tap opens the reading underneath the front */
  .sk--skill .sk-inner { height: auto; transform: none !important; }
  .sk--skill .sk-face { position: relative; inset: auto; transform: none; backface-visibility: visible; -webkit-backface-visibility: visible; }
  .sk--skill .sk-front { padding-top: 28px; }
  .sk--skill .sk-back { border-top: 1px solid var(--line); }
  .sk--skill .sk-back .sk-code { display: none; }
  .sk--skill .sk-back { display: none; }
  .sk--skill.is-flipped .sk-back { display: flex; }
  .sk--skill .sk-front::after { content: "+"; position: absolute; top: 6px; right: 10px; font-family: var(--font-hud); font-size: 18px; line-height: 1; color: var(--ink); transition: transform var(--dur-s) var(--ease); }
  .sk--skill.is-flipped .sk-front::after { transform: rotate(45deg); }
  /* Tech tile backs: drop the repeated code so category and projects fit the small square */
  /* Phones: skill cards first and compact, then a dozen small tool squares (the rest behind "show all") */
  .sk-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
  .sk-grid .sk--skill { order: -1; grid-column: 1 / -1; }
  .sk--skill .sk-uses { display: none; }
  .sk-grid .sk--skill .sk-back { flex-direction: column; align-items: flex-start; gap: 8px; }
  .sk-grid .sk--tech { aspect-ratio: 1; }
  .sk--tech .sk-face { padding: 6px; }
  .sk--tech .sk-name { font-size: 9px; letter-spacing: 0.02em; }
  .sk--tech .sk-back .sk-row { display: none; }
  .sk-grid:not(.is-expanded) .sk--extra { display: none; }
  .btn.sk-more { display: inline-flex; margin-top: var(--space-4); }  /* beats the base hide further down */
  .sk--tech .sk-back { justify-content: flex-start; gap: 4px; }
  .sk--tech .sk-back .sk-code { display: none; }
  .sk--tech .sk-cat { margin-top: 0; font-size: 10px; }
}
.sk { position: relative; perspective: 900px; }
.sk--tech { aspect-ratio: 1; }
.sk--skill { grid-column: span 3; }
.sk-hit { position: absolute; inset: 0; z-index: 0; width: 100%; padding: 0; background: none; border: 0; cursor: pointer; }
/* Hover starts the flip right away; the turn itself takes a normal half second */
.sk-inner { position: relative; height: 100%; pointer-events: none; transform-style: preserve-3d; transition: transform 500ms cubic-bezier(0.65, 0, 0.35, 1); }
.sk.is-flipped .sk-inner { transform: rotateY(180deg); }
.sk-face { position: absolute; inset: 0; background: var(--bg); backface-visibility: hidden; -webkit-backface-visibility: hidden; display: flex; flex-direction: column; justify-content: flex-end; gap: 6px; padding: 8px; overflow: hidden; }
.sk-back { transform: rotateY(180deg); justify-content: space-between; }
.sk-face::before { --l: 8px; --w: 1.5px; opacity: 0; transition: opacity var(--dur-s) var(--ease), inset var(--dur-m) var(--ease); }
.sk:hover .sk-face::before, .sk.is-flipped .sk-face::before, .sk.is-linked .sk-face::before, .sk-hit:focus-visible + .sk-inner .sk-face::before { opacity: 1; }
.sk.is-linked .sk-front { box-shadow: inset 0 0 0 1px #fff; }
.sk-code, .sk-name, .sk-uses, .sk-row, .sk-at { font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.sk-code { position: absolute; top: 7px; left: 8px; }
.sk-code, .sk-name, .sk-uses, .sk-row, .sk-at { font-size: 11px; letter-spacing: 0.06em; }
.sk-name { color: var(--ink); }
.sk-logo { position: absolute; left: 50%; top: 46%; width: 30%; transform: translate(-50%, -50%); filter: invert(1); opacity: 0.92; transition: transform var(--dur-m) var(--ease); }
/* Downloaded logos: coloured files become white silhouettes; grey keeps inner detail */
.sk-logo--file { filter: brightness(0) invert(1); max-height: 34%; object-fit: contain; }
.sk-logo--grey { filter: grayscale(1) brightness(1.5) contrast(1.2); }
.sk-mono { position: absolute; left: 50%; top: 46%; transform: translate(-50%, -50%); font-family: var(--font-display); font-weight: 600; font-size: clamp(18px, 1.8vw, 26px); letter-spacing: -0.04em; color: var(--ink); opacity: 0.92; transition: transform var(--dur-m) var(--ease); }
.sk:hover .sk-mono { transform: translate(-50%, -50%) scale(1.12); }
.sk:hover .sk-logo { transform: translate(-50%, -50%) scale(1.12); }
.sk-title { font-family: var(--font-display); font-weight: 600; font-size: clamp(16px, 1.5vw, 22px); letter-spacing: -0.03em; line-height: 1.05; color: var(--ink); }
.sk-heat { position: absolute; left: 0; bottom: 0; height: 3px; width: 100%; background: var(--heat, #fff); box-shadow: 0 0 10px var(--heat, #fff); }
.sk-cat { margin-top: 14px; font-family: var(--font-display); font-weight: 600; font-size: 13px; line-height: 1.15; letter-spacing: -0.01em; color: var(--ink); }
.sk-at { color: var(--ink); }
.sk-stat { display: grid; gap: 4px; }
.sk-big { margin-top: 14px; font-family: var(--font-display); font-weight: 600; font-size: clamp(28px, 2.6vw, 40px); letter-spacing: -0.04em; line-height: 1; color: var(--ink); font-variant-numeric: tabular-nums; }
.sk--skill .sk-back { flex-direction: row; align-items: flex-end; gap: 16px; }
.sk--skill .sk-stat { flex: none; }
.sk--skill .sk-big { margin: 0; }
.sk-blurb { font-size: 12px; color: var(--muted); max-width: 40ch; line-height: 1.35; }
.sk-used { display: flex; gap: 6px; flex-wrap: wrap; }
.sk-proj { pointer-events: auto; position: relative; z-index: 2; min-height: 22px; padding: 0 6px; font-size: 10px; background: #fff; color: #0b0b10; border: 0; font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; cursor: pointer; }
.sk-more { display: none; }
.sk-proj:hover { background: #0b0b10; color: #fff; box-shadow: inset 0 0 0 1px #fff; }
.sk:not(.is-flipped) .sk-proj { pointer-events: none; }


/* ==========================================================================
   Work: survey stage (one project inspected per scroll step)
   ========================================================================== */

.work { max-width: none; padding: var(--space-24) 0 0; }
.work-head { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--margin); display: flex; justify-content: space-between; align-items: flex-end; gap: var(--space-6); flex-wrap: wrap; margin-bottom: var(--space-8); }
.work-head .section-title { margin: 0; }
.work-hint { margin: 0; padding: var(--tape-pad-sm); font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }


.survey { position: relative; height: calc(var(--steps, 4) * 100vh + 40vh); }
.survey-stage { position: sticky; top: 0; height: 100vh; overflow: hidden; }
.survey-pins { position: absolute; inset: 0; }
.survey-route { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.survey-route polyline { fill: none; stroke: rgba(255,255,255,0.45); stroke-width: 1; stroke-dasharray: 4 6; }

.pin { position: absolute; left: calc(var(--x) * 100%); top: calc(var(--y) * 100%); width: 44px; height: 44px; margin: -22px 0 0 -22px; padding: 0; background: none; border: 0; color: var(--ink); cursor: pointer; z-index: 2; }
.pin-ring { position: absolute; inset: 13px; border: 1.5px solid #fff; border-radius: 50%; transition: transform var(--dur-s) var(--ease); }
.pin-ring::before, .pin-ring::after { content: ""; position: absolute; background: #fff; }
.pin-ring::before { left: 50%; top: -9px; bottom: -9px; width: 1px; }
.pin-ring::after { top: 50%; left: -9px; right: -9px; height: 1px; }
.pin-label { position: absolute; left: 40px; top: 50%; transform: translateY(-50%); padding: 4px 8px; background: var(--bg); white-space: nowrap; font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); text-align: left; line-height: 1.5; }
.pin-label b { color: var(--ink); font-weight: 500; }
.pin--left .pin-label { left: auto; right: 40px; text-align: right; }
.pin:hover .pin-ring { transform: scale(1.3); }
.pin.is-active .pin-ring { transform: scale(1.5); background: rgba(255,255,255,0.15); }
.pin.is-active::after { content: ""; position: absolute; inset: 6px; border: 1px solid #fff; border-radius: 50%; animation: ping 1.6s var(--ease) infinite; }
.pin.is-active .pin-label { color: var(--ink); }
@keyframes ping { from { transform: scale(0.6); opacity: 1; } to { transform: scale(2.4); opacity: 0; } }

.inspect { position: absolute; left: var(--margin); right: var(--margin); top: 29vh; bottom: 4vh; max-width: var(--maxw); margin: 0 auto; display: grid; grid-template-columns: 1.15fr 1fr; gap: var(--space-6); }
.inspect-media { margin: 0; position: relative; min-height: 0; }
.inspect-img { position: absolute; inset: 0; }
.inspect-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
/* Callouts over a model (js/visual.js): edge-pinned tags with leader lines that pop in one by one */
.callouts, .callout-set, .callout-set svg { position: absolute; inset: 0; pointer-events: none; }
.callout-set svg { width: 100%; height: 100%; overflow: visible; }
.callout-set line { stroke: #fff; stroke-width: 1.5; opacity: 0; transition: opacity var(--dur-s) var(--ease); }
.callout-set circle { fill: #fff; opacity: 0; transition: opacity var(--dur-s) var(--ease); }
.callout-set .is-on { opacity: 1; }
.callout { position: absolute; max-width: 26%; padding: 5px 8px; background: var(--bg); border: 1px solid #fff; font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.06em; text-transform: uppercase; line-height: 1.4; color: var(--ink); opacity: 0; transform: scale(0.85); transition: opacity var(--dur-s) var(--ease), transform var(--dur-m) var(--ease); }
.callout--l { left: 10px; transform-origin: left center; }
.callout--r { right: 10px; text-align: right; transform-origin: right center; }
.callout.is-on { opacity: 1; transform: none; }
.callout b { display: block; font-weight: 500; }
.callout small { display: block; color: var(--muted); font-size: 0.9em; text-transform: none; letter-spacing: 0.02em; }
@media (max-width: 860px) { .callout { padding: 3px 6px; font-size: 9px; } .callout small, .callout--note { display: none; } }
.inspect-hud { position: absolute; left: 20px; right: 20px; bottom: 20px; display: flex; justify-content: space-between; gap: 12px; font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; }
.inspect-hud span { background: var(--bg); padding: var(--tape-pad-sm); font-variant-numeric: tabular-nums; }
/* Stats panel: a single solid readout with hairline cells, like a survey instrument */
.stats { position: relative; display: flex; flex-direction: column; min-height: 0; overflow: hidden; background: var(--bg); padding: 16px 20px 18px; gap: 14px; }
.stats-head, .stats-key, .stat dt, .stats-tag { font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); font-variant-numeric: tabular-nums; }
.stats-head { display: flex; align-items: center; gap: 10px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.stats-tag { margin-left: auto; }
.stats-tag::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 8px; background: #f66b19; box-shadow: 0 0 8px #f66b19; animation: stats-blink 1.6s steps(2) infinite; }
.reduced-motion .stats-tag::before { animation: none; }
@keyframes stats-blink { 50% { opacity: 0.2; } }
.inspect-ticks { display: flex; gap: 4px; }
.inspect-ticks i { display: block; width: 22px; height: 2px; background: rgba(255,255,255,0.25); }
.inspect-ticks i.is-on { background: #fff; }
.inspect-title { margin: 0; font-size: clamp(32px, 3.6vw, 56px); }
.inspect-summary { margin: 0; font-size: clamp(15px, 1.2vw, 18px); max-width: 46ch; }
/* Readings: 6-column grid; meta cells take 2, metric cells share a full row */
.stats-grid { margin: 0; display: grid; grid-template-columns: repeat(6, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.stats-metrics { display: contents; }
.stat { grid-column: span 2; padding: 8px 10px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); min-width: 0; }
.stat dd { margin: 4px 0 0; font-family: var(--font-hud); font-size: 13px; letter-spacing: 0.04em; color: var(--ink); line-height: 1.35; font-variant-numeric: tabular-nums; }
.stat--big { grid-column: span var(--span, 2); position: relative; }
.stat--big dd { font-family: var(--font-display); font-weight: 600; font-size: clamp(28px, 2.8vw, 44px); letter-spacing: -0.03em; line-height: 1; margin-top: 8px; }
/* A small ruler under each big reading */
.stat--big::after { content: ""; display: block; height: 5px; margin-top: 8px; background: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 8px); }
.stats-row { display: grid; grid-template-columns: 52px 1fr; gap: 12px; align-items: start; }
.stats-key { padding-top: 3px; }
.inspect-text { color: var(--muted); font-size: 15px; line-height: 1.5; max-width: 56ch; }
.inspect-text p { margin: 0 0 6px; }
.inspect-text p:last-child { margin: 0; }
/* Rows keep their natural height; on shorter screens the log drops to its first paragraph so nothing clips */
.stats > * { flex-shrink: 0; }
@media (max-height: 1000px) { .inspect .inspect-text p + p { display: none; } .inspect .inspect-text p { margin: 0; } }
.stats .tags { margin: 0; }
.stats .tags li { background: none; }
.inspect-links:empty { display: none; }

/* Phones: only the map and model stay pinned; the readout cards (js/work.js) scroll up beneath and change the step */
.plist { display: none; list-style: none; margin: 0; padding: var(--space-4) var(--margin) 30svh; gap: var(--space-6); }
.plist-item { overflow: visible; }
.plist-item .inspect-title { font-size: clamp(30px, 8vw, 44px); }
.plist-item .stats-head span:last-child { margin-left: auto; }
@media (max-width: 860px) {
  .survey { height: auto; }
  .survey-stage { height: 52svh; z-index: 1; }
  .survey-pins, .survey-route { top: 40px; }
  .inspect { grid-template-columns: 1fr; top: calc(40px + (52svh - 40px) * 0.21 + 32px); bottom: var(--space-2);  /* clear of the lowest pin */ }
  .inspect-body { display: none; }
  .plist { display: grid; }
  /* Phones keep the stage to the map and the model: the active pin shows just its code,
     and the callouts and scan readout stay off (each card below has the full details) */
  .pin-label { display: none; }
  .pin.is-active .pin-label { display: block; font-size: 0; padding: 3px 6px; }
  .pin.is-active .pin-label b { font-size: var(--fs-hud); }
  .callouts, .inspect-hud { display: none; }
}

/* ==========================================================================
   Experience: a left-to-right timeline with spinning 3D logos (js/logos.js renders them with Three.js)
   ========================================================================== */

.xp-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0 var(--gutter); }
.xp { display: grid; gap: var(--space-4); grid-template-rows: auto auto 1fr; }  /* panels share one height across the row */
.xp-logo { width: min(100%, 200px); aspect-ratio: 1; display: grid; place-items: center; cursor: grab; }

/* Axis: each node draws its own segment out to the next column, so the line runs left to right in turn */
.xp-node { position: relative; height: 40px; display: flex; align-items: center; }
.xp-node::before { content: ""; position: absolute; left: 6px; right: calc(-1 * var(--gutter) - 6px); top: 50%; height: 1px; background: rgba(255,255,255,0.6); transform: scaleX(0); transform-origin: left; transition: transform 700ms var(--ease) calc(var(--i) * 420ms + 200ms); }
.xp-node::after { content: ""; position: absolute; left: 0; top: 50%; width: 13px; height: 13px; margin-top: -6.5px; border: 1.5px solid #fff; border-radius: 50%; background: var(--bg); transform: scale(0); transition: transform 500ms cubic-bezier(0.34, 1.56, 0.64, 1) calc(var(--i) * 420ms), background-color 500ms var(--ease) calc(var(--i) * 420ms); }
.xp-node .when { position: relative; z-index: 1; margin-left: 24px; padding: var(--tape-pad-sm); background: var(--bg); }
.is-drawn .xp-node::before { transform: scaleX(1); }
.is-drawn .xp-node::after { transform: scale(1); background: #fff; }
/* Now: the axis runs on past the last node and fades out; the node glows and pings */
.xp--now .xp-node::before { right: 0; background: linear-gradient(90deg, rgba(255,255,255,0.6), transparent); }
.xp--now .xp-node .when { color: var(--ink); }
.is-drawn .xp--now .xp-node::after { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 14px var(--accent); }
.xp--now .xp-node .when::before { content: ""; position: absolute; left: -24px; top: 50%; width: 13px; height: 13px; margin-top: -6.5px; border: 1px solid var(--accent); border-radius: 50%; opacity: 0; }
.is-drawn .xp--now .xp-node .when::before { animation: ping 1.8s var(--ease) calc(var(--i) * 420ms + 500ms) infinite; }
.reduced-motion .xp-node::before, .reduced-motion .xp-node::after { transition: none; }

/* Phones and small tablets: the timeline turns to run top to bottom, axis down the left */
@media (max-width: 860px) {
  .xp-list { grid-template-columns: 1fr; }
  .xp { position: relative; padding: 0 0 var(--space-12) 36px; gap: var(--space-3); }
  .xp::before { content: ""; position: absolute; left: 6px; top: 20px; bottom: -20px; width: 1px; background: rgba(255,255,255,0.6); transform: scaleY(0); transform-origin: top; transition: transform 700ms var(--ease) calc(var(--i) * 420ms + 200ms); }
  .is-drawn .xp::before { transform: scaleY(1); }
  .xp--now::before { bottom: 0; background: linear-gradient(rgba(255,255,255,0.6), transparent); }
  .xp-node { order: -1; }
  .xp-node::before { display: none; }
  .xp-node::after { left: -36px; }
  .xp-node .when { margin-left: 0; }
  .xp--now .xp-node .when::before { left: -36px; }
  .xp-logo { width: 120px; }
  .xp-place { top: 0; right: auto; left: calc(100% + 16px); width: max-content; }  /* beside the small frame */
}
.xp-logo img { width: 46%; opacity: 0.9; transition: opacity var(--dur-m) var(--ease); filter: brightness(0) invert(1); }
.xp-logo[data-crop] img { aspect-ratio: 1; object-fit: cover; object-position: left center; }
.logos-3d .xp-logo img { opacity: 0; }
.xp-logo:hover::before { inset: -6px; }
/* One readout per entry, like the project panels: role, then what it was */
.xp-body { display: grid; gap: 10px; align-content: start; background: var(--bg); padding: 16px 20px 18px; }
.xp-body > * { margin: 0; }
.xp-body p { color: var(--muted); max-width: 44ch; }
/* The place sits in the logo frame's top-right corner, like a HUD tag */
.xp-place { position: absolute; top: 10px; right: 10px; padding: var(--tape-pad-sm); background: var(--bg); font-family: var(--font-hud); font-size: var(--fs-hud); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink); white-space: nowrap; }
.logo-canvas { position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: 3; pointer-events: none; }

/* ==========================================================================
   Reveal (initial state; js/main.js animates in)
   ========================================================================== */

.js [data-reveal] .reveal-word { display: inline-block; opacity: 0; transform: translateY(0.5em); }
.reduced-motion [data-reveal] .reveal-word { opacity: 1; transform: none; }
/* Tape boxes unroll from the left as they scroll in (js adds .tape-wait, then .is-in) */
.tape-wait { clip-path: inset(0 100% 0 0); }
.tape-wait.is-in { clip-path: inset(0 0 0 0); transition: clip-path 900ms var(--ease); }

@media (max-width: 640px) { .readout, .scalebar { display: none; } .hero-inner { padding-right: 22px; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .status .dot { animation: none; }
}