html,
body,
#viewer {
  width: 100%;
  height: 100%;
  margin: 0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: #000;
}

body {
  overflow: hidden;
  background: #000;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

#viewer {
  position: fixed;
  inset: 0;
  touch-action: none;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}

body.is-dragging canvas {
  cursor: grabbing;
}

.peripheral-blur-overlay {
  --peripheral-blur-intensity: 6.5px;
  --peripheral-frost-whiteness: 0.12;
  --peripheral-blur-clear-stop: 57%;
  --peripheral-blur-soft-stop: 69%;
  --peripheral-blur-mid-stop: 85%;
  --peripheral-blur-outer-stop: 94%;

  position: fixed;
  inset: 0;
  z-index: 5;
  background: rgba(255, 255, 255, var(--peripheral-frost-whiteness));
  backdrop-filter: blur(var(--peripheral-blur-intensity));
  -webkit-backdrop-filter: blur(var(--peripheral-blur-intensity));
  mask-image: radial-gradient(
    ellipse farthest-corner at center,
    transparent 0%,
    transparent var(--peripheral-blur-clear-stop),
    rgba(0, 0, 0, 0.12) var(--peripheral-blur-soft-stop),
    rgba(0, 0, 0, 0.5) var(--peripheral-blur-mid-stop),
    rgba(0, 0, 0, 0.85) var(--peripheral-blur-outer-stop),
    #000 100%
  );
  -webkit-mask-image: radial-gradient(
    ellipse farthest-corner at center,
    transparent 0%,
    transparent var(--peripheral-blur-clear-stop),
    rgba(0, 0, 0, 0.12) var(--peripheral-blur-soft-stop),
    rgba(0, 0, 0, 0.5) var(--peripheral-blur-mid-stop),
    rgba(0, 0, 0, 0.85) var(--peripheral-blur-outer-stop),
    #000 100%
  );
  mask-repeat: no-repeat;
  -webkit-mask-repeat: no-repeat;
  pointer-events: none;
}

.site-header {
  --ui-position: fixed;
  --ui-top: max(18px, env(safe-area-inset-top));
  --ui-right: max(18px, env(safe-area-inset-right));
  --ui-left: max(18px, env(safe-area-inset-left));
  --ui-z-index: 10;

  pointer-events: none;
}

.header-shell {
  --ui-width: min(936px, 100%);
  --ui-min-height: 62px;
  --ui-radius: 30px;

  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 auto;
  padding: 8px 9px 8px 10px;
}

.brand-cluster,
.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.brand {
  min-height: 44px;
  padding: 0 6px;
  text-decoration: none;
}

.profile-placeholder {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 50%;
  background: rgba(237, 242, 248, 0.16);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.12),
    0 6px 18px rgba(0, 0, 0, 0.14);
}

.brand-logo {
  display: block;
  width: 140px;
  height: auto;
}

.brand-divider {
  flex: 0 0 auto;
  width: 1px;
  height: 34px;
  margin-left: 12px;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0),
    rgba(255, 255, 255, 0.44) 24%,
    rgba(255, 255, 255, 0.44) 76%,
    rgba(255, 255, 255, 0)
  );
}

.brand:focus-visible {
  border-radius: 24px;
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: 3px;
}

.header-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  margin-left: 18px;
}

.profile-placeholder {
  color: rgba(255, 255, 255, 0.84);
  cursor: default;
}

.profile-placeholder svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.prompt-dock {
  --ui-position: fixed;
  --ui-right: max(18px, env(safe-area-inset-right));
  --ui-bottom: max(22px, calc(env(safe-area-inset-bottom) + 18px));
  --ui-left: max(18px, env(safe-area-inset-left));
  --ui-z-index: 10;

  display: flex;
  justify-content: center;
  margin: 0;
  pointer-events: none;
}

.ui-placement {
  position: var(--ui-position, fixed);
  top: var(--ui-top, auto);
  right: var(--ui-right, auto);
  bottom: var(--ui-bottom, auto);
  left: var(--ui-left, auto);
  z-index: var(--ui-z-index, auto);
}

.ui-frame {
  width: var(--ui-width, auto);
  height: var(--ui-height, auto);
  min-height: var(--ui-min-height, 0);
  border-radius: var(--ui-radius, 0);
}

.prompt-shell {
  --input-height: 44px;
  --input-pad-left: 18px;
  --input-pad-right: 14px;
  --prompt-padding: 8px;
  --send-size: 44px;
  --ui-width: min(720px, 100%);
  --ui-min-height: 62px;
  --ui-radius: 30px;

  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--send-size);
  align-items: end;
  padding: var(--prompt-padding);
}

.prompt-input {
  position: relative;
  z-index: 2;
  width: 100%;
  height: var(--input-height);
  max-height: 128px;
  padding: 11px var(--input-pad-right) 10px var(--input-pad-left);
  border: 0;
  outline: 0;
  resize: none;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.94);
  background: transparent;
  font: 400 16px/22px system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  caret-color: #fff;
}

.prompt-input::-webkit-scrollbar {
  display: none;
}

.prompt-input::selection {
  color: rgba(255, 255, 255, 0.98);
  background: rgba(235, 241, 248, 0.28);
}

.prompt-input::-moz-selection {
  color: rgba(255, 255, 255, 0.98);
  background: rgba(235, 241, 248, 0.28);
}

.prompt-input.is-empty:not(:focus) {
  caret-color: transparent;
}

.prompt-input::placeholder {
  color: rgba(255, 255, 255, 0.58);
}

.prompt-input:focus::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.typewriter-placeholder {
  position: absolute;
  top: var(--prompt-padding);
  right: calc(var(--prompt-padding) + var(--send-size) + var(--input-pad-right));
  left: calc(var(--prompt-padding) + var(--input-pad-left));
  z-index: 1;
  display: flex;
  align-items: center;
  height: var(--input-height);
  overflow: hidden;
  color: rgba(255, 255, 255, 0.58);
  font: 400 16px/22px system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  pointer-events: none;
  white-space: nowrap;
  transition: opacity 120ms ease;
}

.typewriter-placeholder.is-hidden {
  opacity: 0;
}

.typewriter-placeholder-text {
  min-width: 0;
  overflow: hidden;
  text-overflow: clip;
}

.typewriter-caret {
  flex: 0 0 auto;
  width: 5px;
  height: 20px;
  margin-left: 2px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.5);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.06);
  animation: typewriter-caret-blink 960ms steps(1, end) infinite;
}

.typewriter-placeholder.is-writing .typewriter-caret {
  opacity: 1;
  animation: none;
}

.typewriter-placeholder.is-input-focused:not(.is-writing) .typewriter-caret {
  opacity: 0;
  animation: none;
}

.prompt-send {
  z-index: 2;
  display: grid;
  place-items: center;
  width: var(--send-size);
  height: var(--send-size);
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.54);
  border-radius: 50%;
  color: rgb(17, 24, 39);
  background: rgba(252, 253, 255, 0.98);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.82),
    0 8px 22px rgba(0, 0, 0, 0.2);
  cursor: pointer;
}

.prompt-send:disabled {
  border-color: rgba(148, 157, 171, 0.96);
  color: rgb(70, 76, 86);
  background: rgba(148, 157, 171, 0.96);
  box-shadow:
    inset 0 0 0 1px rgba(148, 157, 171, 0.96),
    0 8px 22px rgba(0, 0, 0, 0.18);
  cursor: default;
}

.prompt-send:not(:disabled):hover {
  border-color: rgba(255, 255, 255, 0.68);
  background: rgba(255, 255, 255, 0.99);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.86),
    0 12px 28px rgba(0, 0, 0, 0.24);
}

.prompt-send:focus-visible,
.prompt-input:focus-visible {
  outline: none;
}

.prompt-send:focus-visible {
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.82),
    0 0 0 2px rgba(255, 255, 255, 0.26),
    0 8px 22px rgba(0, 0, 0, 0.2);
}

.prompt-send svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.25;
  stroke-linecap: round;
  stroke-linejoin: round;
}

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

@media (max-width: 520px) {
  .site-header {
    --ui-top: max(12px, env(safe-area-inset-top));
    --ui-right: max(12px, env(safe-area-inset-right));
    --ui-left: max(12px, env(safe-area-inset-left));
  }

  .header-shell {
    --ui-min-height: 58px;
    --ui-radius: 28px;

    padding: 8px;
  }

  .profile-placeholder {
    width: 42px;
    height: 42px;
  }

  .brand {
    min-height: 42px;
    padding: 0 5px;
  }

  .brand-logo {
    width: 126px;
  }

  .brand-divider {
    height: 32px;
    margin-left: 10px;
  }

  .prompt-dock {
    --ui-right: max(12px, env(safe-area-inset-right));
    --ui-bottom: max(14px, calc(env(safe-area-inset-bottom) + 12px));
    --ui-left: max(12px, env(safe-area-inset-left));
  }

  .prompt-shell {
    --input-height: 42px;
    --input-pad-left: 15px;
    --send-size: 42px;
    --ui-min-height: 58px;
    --ui-radius: 28px;

    grid-template-columns: minmax(0, 1fr) var(--send-size);
  }

  .prompt-input {
    font-size: 15px;
  }

  .typewriter-placeholder {
    font-size: 15px;
  }
}

noscript {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff;
  background: #000;
}