@font-face {
  font-family: 'Geist';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('./fonts/geist-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('./fonts/geist-mono-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --text: rgba(226, 244, 255, 0.94);
  --muted: rgba(168, 210, 230, 0.7);
  --faint: rgba(150, 200, 224, 0.5);
  --cyan: #6fd8ff;
  --line: rgba(111, 216, 255, 0.22);
  --mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: 'Geist', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --pad: clamp(14px, 2.4vw, 28px);
  --safe-b: env(safe-area-inset-bottom, 0px);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overscroll-behavior: none;
}

/* matches the rendered backdrop, so the model fades in without a black frame */
html {
  background: #010205;
}

/* sampled from the rendered backdrop (radius in viewport heights) */
body {
  background: radial-gradient(
    circle at 50% 50%,
    #010f1d 0,
    #010d19 30vh,
    #010a15 42vh,
    #010811 50vh,
    #01060e 56vh,
    #01040a 65vh,
    #010306 75vh,
    #010205 86vh
  );
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

#gl,
#hud {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: block;
}

#gl {
  opacity: 0;
  transition: opacity 0.25s ease-out;
}

/* The first boot frame as a still (tests/make_poster.mjs), shown until the first WebGL frame
   fades in over it: only the light the engine adds, composited over the matching backdrop.
   Placed relative to the engine's home position, in viewport heights. */
#poster {
  position: fixed;
  left: calc(50vw - 40.185vh);
  top: calc(50vh - var(--lift, 0px) - 43.086vh);
  height: 79.753vh;
  width: auto;
  mix-blend-mode: plus-lighter;
  pointer-events: none;
  user-select: none;
}

body.ready #gl {
  opacity: 1;
}

#hud {
  touch-action: none;
  cursor: grab;
}

#hud:active {
  cursor: grabbing;
}

/* idle pointer: hide the cursor so recordings show only the model */
body.idle #hud {
  cursor: none;
}

/* the camera feed is processed, never shown */
#cam {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 2px;
  height: 2px;
  opacity: 0.001;
  pointer-events: none;
}

/* ------------------------------------------------------------ bottom dock */
.dock {
  position: fixed;
  z-index: 4;
  left: 50%;
  bottom: calc(var(--pad) + var(--safe-b));
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  width: max-content;
  max-width: calc(100vw - 24px);
  pointer-events: none;
  transition: opacity 0.6s ease;
}

body.booting .dock {
  opacity: 0;
}

.dock > * {
  pointer-events: auto;
}

.msg {
  margin: 0;
  max-width: 400px;
  padding: 9px 16px;
  border: 1px solid rgba(255, 170, 150, 0.22);
  border-radius: 12px;
  background: rgba(3, 10, 17, 0.78);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: 14px;
  line-height: 1.45;
  text-align: center;
  color: #ffcabd;
  text-wrap: balance;
}

button {
  -webkit-tap-highlight-color: transparent;
  appearance: none;
  margin: 0;
  font-family: var(--sans);
  cursor: pointer;
}

button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

@property --sweep {
  syntax: '<angle>';
  inherits: false;
  initial-value: 0deg;
}

.cta {
  position: relative;
  height: 46px;
  padding: 0 26px;
  border: 1px solid rgba(111, 216, 255, 0.55);
  border-radius: 999px;
  background: rgba(111, 216, 255, 0.14);
  color: #effbff;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  box-shadow: 0 0 24px rgba(111, 216, 255, 0.16), inset 0 0 12px rgba(111, 216, 255, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, color 0.2s ease, opacity 0.4s ease;
}

/* busy: the label gives way to a light running around the edge and a breathing scan line */
.cta::before,
.cta::after {
  content: '';
  position: absolute;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.cta::before {
  inset: -1px;
  padding: 1.5px;
  border-radius: inherit;
  background: conic-gradient(from var(--sweep), transparent 0deg 200deg, rgba(111, 216, 255, 0.55) 300deg, #eafaff 352deg, transparent 360deg);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
}

.cta::after {
  left: 50%;
  top: 50%;
  width: 64px;
  height: 2px;
  margin: -1px 0 0 -32px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, #c4f1ff, transparent);
  box-shadow: 0 0 10px rgba(111, 216, 255, 0.55);
}

.cta[aria-busy='true'] {
  cursor: progress;
  border-color: rgba(111, 216, 255, 0.2);
  background: rgba(111, 216, 255, 0.06);
  color: transparent;
  box-shadow: none;
}

.cta[aria-busy='true']::before {
  opacity: 1;
  animation: cta-sweep 1.15s linear infinite;
}

.cta[aria-busy='true']::after {
  opacity: 1;
  animation: cta-breathe 0.9s ease-in-out infinite alternate;
}

@keyframes cta-sweep {
  to {
    --sweep: 360deg;
  }
}

@keyframes cta-breathe {
  from {
    transform: scaleX(0.25);
  }
  to {
    transform: scaleX(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .cta[aria-busy='true']::before {
    animation-duration: 3s;
  }
  .cta[aria-busy='true']::after {
    animation: none;
    transform: scaleX(0.6);
  }
}

@media (hover: hover) {
  .cta:not([aria-busy='true']):hover {
    background: rgba(111, 216, 255, 0.24);
    border-color: rgba(140, 226, 255, 0.8);
    box-shadow: 0 0 30px rgba(111, 216, 255, 0.26), inset 0 0 12px rgba(111, 216, 255, 0.1);
  }
}

.controls {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid rgba(111, 216, 255, 0.12);
  border-radius: 999px;
  background: rgba(3, 10, 17, 0.42);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: opacity 0.6s ease;
}

.ctl {
  height: 34px;
  padding: 0 14px;
  border: 0;
  border-radius: 999px;
  background: none;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color 0.15s ease, background 0.15s ease;
}

.ctl.help-btn {
  width: 34px;
  padding: 0;
  font-family: var(--mono);
}

/* which of the three looks is showing */
.look-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.dots {
  display: inline-flex;
  gap: 3px;
}

.dots i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(168, 210, 230, 0.28);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.look-btn[data-look='wire'] .dots i:nth-child(1),
.look-btn[data-look='cad'] .dots i:nth-child(2),
.look-btn[data-look='holo'] .dots i:nth-child(3) {
  background: var(--cyan);
  box-shadow: 0 0 6px rgba(111, 216, 255, 0.8);
}

.ctl[aria-pressed='true'],
.ctl[aria-expanded='true'] {
  color: #effbff;
  background: rgba(111, 216, 255, 0.16);
}

@media (hover: hover) {
  .ctl:hover {
    color: var(--text);
    background: rgba(111, 216, 255, 0.1);
  }
}

.ctl:active {
  color: var(--text);
  background: rgba(111, 216, 255, 0.14);
}

/* the control row fades away while the pointer rests */
body.idle .controls {
  opacity: 0;
  pointer-events: none;
}

/* ------------------------------------------------------------ help (details on demand) */
.help {
  position: fixed;
  z-index: 5;
  left: 50%;
  bottom: calc(var(--pad) + var(--safe-b) + var(--dock-h, 52px) + 12px);
  transform: translate(-50%, 6px);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, auto));
  gap: 18px 30px;
  width: max-content;
  max-width: calc(100vw - 24px);
  max-height: calc(100dvh - var(--dock-h, 52px) - 2 * var(--pad) - 24px);
  overflow: auto;
  padding: 18px 22px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(3, 10, 17, 0.9);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.help.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.help h2 {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.help dl {
  margin: 0;
  display: grid;
  gap: 8px;
}

.help dl > div {
  display: grid;
  gap: 1px;
}

.help dt {
  font-size: 14px;
  color: var(--text);
}

.help dd {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.help #help-keys dl > div {
  grid-template-columns: 76px auto;
  align-items: center;
  gap: 10px;
}

.help .note {
  grid-column: 1 / -1;
  margin: 2px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(111, 216, 255, 0.1);
  font-size: 13px;
  color: var(--faint);
}

kbd {
  display: inline-block;
  min-width: 20px;
  padding: 1px 5px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 17px;
  text-align: center;
  color: var(--text);
}

/* ------------------------------------------------------------ debug (D key) */
.debug {
  position: fixed;
  z-index: 6;
  top: var(--pad);
  left: var(--pad);
  margin: 0;
  padding: 8px 10px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.55);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
  color: #bfefff;
  pointer-events: none;
  white-space: pre;
}

/* ------------------------------------------------------------ overlays hidden (H) */
body[data-ui='model'] .dock,
body[data-ui='model'] .help {
  opacity: 0;
  pointer-events: none;
}

body[data-ui='model'] .dock > * {
  pointer-events: none;
}

/* ------------------------------------------------------------ small screens */
@media (max-width: 720px) {
  .help {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 22px;
    width: calc(100vw - 24px);
    padding: 16px 18px 14px;
  }

  .help #help-keys {
    grid-column: 1 / -1;
  }
}

/* touch devices have no keyboard shortcuts to list */
@media (hover: none) and (pointer: coarse) {
  .help #help-keys {
    display: none;
  }
}

/* short landscape screens: one row so the engine keeps the height */
@media (max-height: 520px) and (orientation: landscape) {
  .dock {
    flex-direction: row;
    gap: 10px;
  }

  .msg {
    position: absolute;
    left: 50%;
    bottom: calc(100% + 10px);
    transform: translateX(-50%);
    width: max-content;
    max-width: min(380px, calc(100vw - 24px));
  }
}

@media (max-width: 380px) {
  .ctl {
    padding: 0 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  #gl,
  .dock,
  .controls,
  .cta,
  .help {
    transition: none;
  }
}