/* The Shawn AI chat box (homepage #scene2) and the nav pill that wraps it on
   every other page (chat.js injects #ask there). */
#chat {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  width: min(620px, calc(100vw - 32px));
  padding: 12px;
  font: var(--text-base)/1.5 var(--sans);
  color: var(--black);
  border: 1px solid color-mix(in srgb, var(--black) 12%, transparent);
  border-radius: 26px;
  background: color-mix(in srgb, var(--bg-off) 55%, transparent);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  backdrop-filter: blur(16px) saturate(180%);
  box-shadow:
    0 1px 2px rgb(0 0 0 / .05),
    0 10px 28px rgb(0 0 0 / .07),
    inset 0 1px 0 rgb(255 255 255 / .75);
}
[data-theme=dark] #chat {
  border-color: rgb(255 255 255 / .12);
  box-shadow:
    0 1px 2px rgb(0 0 0 / .4),
    0 10px 28px rgb(0 0 0 / .35),
    inset 0 1px 0 rgb(255 255 255 / .08);
}
#chat-log {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 42svh;
  overflow-y: auto;
  padding: 4px 4px 0;
  overscroll-behavior: contain;
}
#chat-log:empty { display: none; }   /* no empty well before the first message */
#chat-log p {
  max-width: 82%;
  margin: 0;
  padding: 8px 13px;
  border-radius: 18px;
  white-space: pre-wrap;
  color: var(--black);
  background: color-mix(in srgb, var(--bg-off) 70%, transparent);
}
#chat-log .me {
  align-self: flex-end;
  color: #fff;
  background: var(--accent);
}
#chat-log ul { margin: 6px 0; padding-left: 18px; white-space: normal; }
#chat-log li + li { margin-top: 6px; }
#chat-log li::marker { color: var(--accent); }
#chat-log a {
  display: inline-block;
  padding: 1px 10px;
  border-radius: 980px;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}
#chat-log a:hover { background: color-mix(in srgb, var(--accent) 24%, transparent); }
#chat-log a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
#chat-log .err { color: #b3261e; background: color-mix(in srgb, #b3261e 12%, transparent); }
[data-theme=dark] #chat-log .err { color: #ffb4ab; }
#chat-input {
  min-width: 0;
  padding: 10px 14px;
  font: inherit;
  color: inherit;
  border: 1px solid color-mix(in srgb, var(--black) 12%, transparent);
  border-radius: 980px;
  background: color-mix(in srgb, var(--bg-off) 70%, transparent);
}
#chat-input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
#chat button {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  color: #fff;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}
#chat button:hover { background: var(--accent-hover); }

/* Every page but the homepage: the chat as a pill centered in the fixed nav, opening
   downward. Phones have no room in the nav, so there it's a corner pill. */
/* Centered on the nav's midline (nav top + half its 48px height), whatever the pill's size. */
#ask { position: fixed; top: calc(clamp(8px, 1.5vw, 14px) + var(--nav-height, 48px) / 2); left: 50%; translate: -50% -50%; z-index: 101; }
/* Its own view-transition layer, like .nav: otherwise it crossfades with the
   page underneath the nav's glass, then pops back on top when the fade ends.
   Named on the children, not #ask: a view-transition-name makes a backdrop root,
   which would leave #chat's backdrop-filter blurring nothing. */
#ask summary { view-transition-name: ask; }
#ask #chat { view-transition-name: ask-chat; }
/* Solid accent so it reads as the page's call to action, not chrome. */
#ask summary {
  list-style: none;
  display: flex;
  align-items: center;
  height: 36px;
  padding: 0 18px;
  font: 600 var(--text-sm, .875rem)/1 var(--sans);
  color: #fff;
  border: 1px solid rgb(255 255 255 / .18);
  border-radius: 980px;
  background: var(--accent);
  /* Centered, tight glow: it hugs the pill and stays inside the nav. */
  box-shadow:
    0 0 14px color-mix(in srgb, var(--accent) 45%, transparent),
    inset 0 1px 0 rgb(255 255 255 / .25);
  cursor: pointer;
  transition: transform .2s cubic-bezier(.32,1.4,.52,1), box-shadow .2s;
}
#ask summary::before { content: "\2726"; margin-right: 8px; }
#ask summary:hover { box-shadow: 0 0 20px color-mix(in srgb, var(--accent) 65%, transparent), inset 0 1px 0 rgb(255 255 255 / .25); }
#ask summary::-webkit-details-marker { display: none; }
#ask summary:hover { transform: scale(1.04); }
#ask summary:active { transform: scale(.96); }
#ask summary:focus-visible { outline: 2px solid var(--black); outline-offset: 2px; }
/* Pops out of the pill with a little overshoot. */
#ask #chat { transform-origin: top center; animation: ask-shut .2s ease-in both; }
#ask[open] #chat { animation: ask-pop .38s cubic-bezier(.32,1.4,.52,1) both; }
@keyframes ask-pop { from { opacity: 0; transform: translateY(var(--ask-dy, -12px)) scale(.6); } }
@keyframes ask-shut { to { opacity: 0; transform: translateY(var(--ask-dy, -12px)) scale(.6); } }
/* Closing hides the content at once; this holds it rendered while ask-shut
   plays. Browsers without ::details-content just close instantly. */
#ask::details-content { transition: content-visibility .2s allow-discrete; }
@media (prefers-reduced-motion: reduce) {
  #ask summary { transition: none; }
  #ask #chat, #ask[open] #chat { animation: none; }
  #ask::details-content { transition: none; }
}
#ask #chat { position: absolute; top: calc(100% + 10px); left: 50%; width: min(380px, calc(100vw - 32px)); margin-left: calc(min(380px, calc(100vw - 32px)) / -2); }
#ask #chat-log { max-height: 50svh; }
@media (width <= 640px) {
  #ask { top: auto; left: auto; right: 16px; bottom: 16px; translate: none; }
  #ask #chat { top: auto; bottom: calc(100% + 10px); left: auto; right: 0; margin-left: 0; transform-origin: bottom right; --ask-dy: 12px; }
  body:has(#ask) .footer { padding-bottom: 72px; }   /* keep the pill off the footer links */
}