* { box-sizing: border-box; }
:root { --wash: #f4efe6; }
html, body { margin: 0; min-height: 100%; }
body {
  font: 16px/1.4 system-ui, sans-serif;
  color: #1c2430;
  background:
    radial-gradient(880px 520px at 12% -8%, rgba(255, 255, 255, .75), transparent 58%),
    radial-gradient(720px 480px at 100% 110%, #d7ebe3, transparent 56%),
    radial-gradient(540px 380px at 78% 0%, rgba(255, 206, 156, .38), transparent 52%),
    linear-gradient(165deg, #f7f2e8 0%, var(--wash) 46%, #e3eef6 100%);
}
nav {
  position: sticky;
  top: 12px;
  z-index: 40;
  display: flex;
  gap: 4px;
  width: max-content;
  margin: 12px 16px;
  padding: 4px;
  background: rgba(255, 255, 255, .78);
  border: 1px solid rgba(255, 255, 255, .95);
  border-radius: 999px;
  box-shadow: 0 8px 28px rgba(40, 48, 60, .12);
  backdrop-filter: blur(12px);
}
nav a {
  color: #1c2430;
  text-decoration: none;
  font: 600 14px/1 system-ui, sans-serif;
  padding: 8px 14px;
  border-radius: 999px;
}
nav a[aria-current="page"] { background: #243044; color: #fff; }
main { padding: 0 16px 16px; }
.page-demo {
  --dock: 28px;
  --corner-w: 330px;
  --corner-h: 390px;
  --chat-w: min(32rem, calc(100vw - 2 * var(--dock)));
  --chat-h: min(46vh, 440px);
  --mesh-pad: 0.2;
}
.about {
  max-width: 40rem;
  margin: 4px 8px 28px;
}
.about h1 {
  margin: 0 0 10px;
  font: 700 32px/1.15 system-ui, sans-serif;
}
.about p { margin: 0 0 12px; }
.about a { color: #1c2430; }
#stage { position: relative; overflow: hidden; }
#stage canvas { display: block; width: 100%; height: 100%; }
.page-demo #stage {
  position: fixed;
  z-index: 3;
  right: var(--dock);
  bottom: var(--dock);
  width: var(--corner-w);
  height: var(--corner-h);
  background: transparent;
}
.callout {
  position: fixed;
  z-index: 4;
  right: var(--dock);
  bottom: calc(var(--dock) + var(--corner-h) + 12px);
  width: var(--corner-w);
  border: 0;
  background: #fff;
  color: #1c2430;
  font: 600 15px/1.2 system-ui, sans-serif;
  padding: 12px 14px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(30, 40, 50, .18);
  cursor: pointer;
  text-align: center;
}
.callout::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -8px;
  transform: translateX(-50%);
  border: 8px solid transparent;
  border-top-color: #fff;
  border-bottom: 0;
}
.callout[hidden] { display: none; }
#chat {
  display: none;
  position: fixed;
  right: var(--dock, 28px);
  bottom: var(--dock, 28px);
  z-index: 25;
  width: var(--chat-w, min(32rem, calc(100vw - 56px)));
  height: var(--chat-h, min(46vh, 440px));
  flex-direction: column;
  background: #fff;
  color: #111;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(20, 24, 32, .22);
}
#chat[hidden] { display: none; }
body.chat-open #chat { display: flex; }
body.page-demo.chat-open #stage {
  --open-h: calc(100vh - 72px - var(--dock) - var(--chat-h) - 16px);
  --fit: 0.66;
  /* --mesh-pad is the view below the figure. The stage drops so 30% of that gap remains above the chat. */
  --mesh-gap: calc(var(--mesh-pad) * var(--fit) * var(--open-h) + 16px);
  --drop: calc(var(--mesh-gap) * 0.7);
  top: calc(72px + (1 - var(--fit)) * var(--open-h) + var(--drop));
  right: calc(var(--dock) + (1 - var(--fit)) / 2 * var(--chat-w));
  bottom: calc(var(--dock) + var(--chat-h) + 16px - var(--drop));
  left: auto;
  width: calc(var(--chat-w) * var(--fit));
  height: auto;
}
#chat header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid #eee;
  font-weight: 600;
}
#close {
  border: 0;
  background: transparent;
  color: #111;
  font: 24px/1 system-ui, sans-serif;
  padding: 0 4px;
  cursor: pointer;
}
#log {
  flex: 1;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 16px;
  background: #fafafa;
}
.msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 18px;
  line-height: 1.4;
  white-space: pre-wrap;
}
.msg-you {
  align-self: flex-end;
  background: #0d6efd;
  color: #fff;
  border-bottom-right-radius: 5px;
}
.msg-agent {
  align-self: flex-start;
  background: #fff;
  border: 1px solid #e6e6e6;
  border-bottom-left-radius: 5px;
}
.msg-status {
  background: transparent;
  border: 0;
  color: #666;
  font-style: italic;
  padding: 4px 2px;
}
#talk {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid #eee;
  background: #fff;
}
#talk input {
  flex: 1;
  border: 1px solid #ddd;
  border-radius: 12px;
  padding: 9px 12px;
  font: inherit;
}
#talk button {
  border: 0;
  border-radius: 12px;
  background: #111;
  color: #fff;
  padding: 9px 14px;
  cursor: pointer;
  font: inherit;
}
#talk button:disabled, #talk input:disabled { opacity: .5; cursor: wait; }
.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.page-wardrobe main {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(180px, 4fr) minmax(0, 3fr);
  gap: 12px;
  align-items: start;
}
.wardrobe-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.page-wardrobe #stage {
  width: 100%;
  flex: 0 0 auto;
  height: calc(100vh - 156px);
  min-height: 240px;
  background: transparent;
  cursor: grab;
  touch-action: none;
}
.page-wardrobe #stage.dragging { cursor: grabbing; }
#randomize {
  flex: 0 0 auto;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font: 700 14px/1 system-ui, sans-serif;
  padding: 11px 20px;
  background: #e6b450;
  color: #1c160c;
}
.sheet {
  padding: 14px;
  border-radius: 22px;
  background: rgba(22, 26, 34, .9);
  color: #f4efe6;
  box-shadow: 0 18px 50px rgba(20, 24, 32, .28);
}
#identity, #controls {
  min-width: 0;
  max-height: calc(100vh - 88px);
  overflow: auto;
}
.group + .group { margin-top: 16px; }
.group h2 {
  margin: 0 0 8px;
  font: 600 12px/1 system-ui, sans-serif;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #e6b450;
}
.chip, .swatch { font: inherit; cursor: pointer; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  gap: 6px;
}
.modes { grid-template-columns: repeat(auto-fit, minmax(72px, 1fr)); }
.chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 72px;
  padding: 6px 4px;
  border: 2px solid transparent;
  border-radius: 14px;
  background: #2a3140;
  color: #f4efe6;
  font: 11px/1.2 system-ui, sans-serif;
  text-align: center;
}
.chip span { overflow-wrap: anywhere; }
.chip.mode { min-height: 44px; font: 600 12px/1.2 system-ui, sans-serif; }
.chip svg { width: 36px; height: 36px; }
.chip[aria-pressed="true"] {
  border-color: #e6b450;
  background: #3d3424;
}
.swatches { display: flex; flex-wrap: wrap; gap: 10px; }
.swatch {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid transparent;
  box-shadow: inset 0 0 0 2px rgba(0, 0, 0, .28);
  padding: 0;
}
.swatch[aria-pressed="true"] { border-color: #fff; }
.hue {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}
.hue input { width: 100%; }
@media (max-width: 900px) {
  .about { padding-bottom: calc(var(--corner-h) + 100px); }
}