#chat-app {
  --chat-ink: #153b3b;
  --chat-muted: #526d6c;
  --chat-teal: #087c74;
  --chat-teal-hover: #06645e;
  --chat-line: #d7e7e4;
  --chat-bg: #fff;
  --chat-soft: #f1f8f6;
  color: var(--chat-ink);
  max-width: 1200px;
  margin: 1.5rem auto 3rem;
  font: inherit;
}
#chat-app *, #chat-app *::before, #chat-app *::after { box-sizing: border-box; }
#chat-app [hidden] { display: none !important; }
#chat-app .button {
  appearance: none; display: inline-flex; align-items: center; justify-content: center;
  flex: 0 0 auto;
  min-height: 44px; border: 1px solid transparent; border-radius: 10px;
  background: var(--chat-teal); color: #fff; padding: .7rem 1.15rem;
  font: inherit; font-weight: 700; cursor: pointer; text-decoration: none;
  line-height: 1.3; transition: background .15s, border-color .15s;
}
#chat-app .button:hover:not(:disabled) { background: var(--chat-teal-hover); }
#chat-app .button-secondary { background: var(--chat-bg); color: var(--chat-ink); border-color: var(--chat-line); }
#chat-app .button-secondary:hover:not(:disabled) { background: var(--chat-soft); }
#chat-app .button:disabled { opacity: .48; cursor: not-allowed; }
#chat-app :is(button, input, select, textarea, a):focus-visible { outline: 3px solid #da9433; outline-offset: 3px; }
#chat-app :is(input:not([type=checkbox]), select, textarea) {
  width: 100%; min-height: 44px; border: 1px solid #9cb9b5; border-radius: 9px;
  color: var(--chat-ink); background: var(--chat-bg); padding: .7rem .8rem; font: inherit;
}
#chat-app textarea { resize: vertical; max-height: 130px; }
#chat-app input::placeholder, #chat-app textarea::placeholder { color: var(--chat-muted); opacity: .9; }
#chat-app a { color: var(--chat-teal); text-decoration: underline; text-underline-offset: 3px; }
#chat-app h2 { font-size: clamp(1.5rem, 2.8vw, 2rem); line-height: 1.18; letter-spacing: -.04em; margin: .75rem 0; }
.chat-layout { display: grid; grid-template-columns: minmax(255px, 320px) minmax(0, 1fr); gap: 1.5rem; align-items: start; }
.chat-setup { padding: 1.7rem; border: 1px solid var(--chat-line); border-radius: 20px; background: var(--chat-bg); }
.chat-eyebrow { color: var(--chat-teal); font-size: .7rem; font-weight: 800; text-transform: uppercase; letter-spacing: .14em; }
.chat-muted { color: var(--chat-muted); font-size: .94rem; line-height: 1.6; }
#chat-admission { border: 0; padding: 0; margin: 1.4rem 0 0; min-width: 0; }
.chat-field { display: block; margin: 1rem 0 .45rem; font-size: .88rem; font-weight: 700; }
.chat-optional { float: right; font-weight: 400; color: var(--chat-muted); font-size: .8rem; }
.chat-help { margin: .45rem 0 .9rem; color: var(--chat-muted); font-size: .77rem; line-height: 1.6; }
.chat-check { display: flex; align-items: flex-start; gap: .6rem; font-size: .85rem; line-height: 1.5; margin: 1rem 0; cursor: pointer; }
.chat-check input { appearance: auto; width: 18px; height: 18px; min-width: 18px; margin: .1rem 0 0; accent-color: var(--chat-teal); }
.chat-consent { border-top: 1px solid var(--chat-line); margin-top: 1.2rem; padding-top: .2rem; }
#chat-app .chat-start { width: 100%; margin: .4rem 0; }
.chat-notice { border-left: 3px solid #b8791c; background: #fff5df; color: #684511; padding: .8rem; font-size: .85rem; line-height: 1.6; overflow-wrap: anywhere; }
.chat-captcha { margin: .75rem 0; padding: .75rem; border: 1px solid var(--chat-line); border-radius: 10px; background: var(--chat-soft); }
.chat-captcha p { color: var(--chat-muted); font-size: .85rem; line-height: 1.5; }
#chat-captcha-widget { display: flex; justify-content: center; }
#chat-app .chat-captcha .button { width: 100%; margin-top: .65rem; font-size: .8rem; }
.chat-room { overflow: hidden; border: 1px solid var(--chat-line); border-radius: 20px; background: var(--chat-bg); box-shadow: 0 12px 36px #153b3b08; min-width: 0; }
.chat-room-header { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--chat-line); }
.chat-status { margin: 0; font-weight: 750; font-size: 1.05rem; display: flex; gap: .5rem; align-items: center; }
.chat-status::before { content: ""; width: 8px; height: 8px; flex: 0 0 8px; border-radius: 50%; background: #8ba6a1; }
#chat-app[data-phase=active] .chat-status::before { background: var(--chat-teal); }
#chat-app[data-phase=searching] .chat-status::before { background: #c18223; }
.chat-room-header .chat-help { margin-bottom: 0; }
.chat-mode { flex: 0 0 auto; border: 1px solid var(--chat-line); border-radius: 999px; padding: .4rem .65rem; font-size: .72rem; color: var(--chat-teal); background: var(--chat-soft); font-weight: 700; }
.chat-conversation { height: 350px; overflow-y: auto; overscroll-behavior: contain; padding: 1.25rem 1.5rem; }
.chat-empty { display: flex; min-height: 100%; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 1rem; color: var(--chat-muted); }
.chat-empty-mark { color: var(--chat-teal); display: grid; place-items: center; font-size: 2.7rem; height: 80px; width: 80px; border-radius: 24px; background: var(--chat-soft); margin-bottom: 1rem; }
.chat-empty h3 { color: var(--chat-ink); font-size: 1.15rem; letter-spacing: -.02em; margin: .6rem 0 0; }
.chat-empty p { max-width: 280px; font-size: .87rem; line-height: 1.65; }
#chat-transcript { display: flex; flex-direction: column; align-items: flex-start; gap: .75rem; }
.chat-message { margin: 0; max-width: 88%; background: var(--chat-soft); border: 1px solid var(--chat-line); padding: .65rem .95rem; border-radius: 12px 12px 12px 3px; white-space: pre-wrap; overflow-wrap: anywhere; font-size: .94rem; line-height: 1.5; }
.chat-message-author { display: block; font-size: .65rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 750; color: var(--chat-muted); margin-bottom: .25rem; }
.chat-message-own { align-self: flex-end; background: #dcf3ed; border-color: #bfe2d9; border-radius: 12px 12px 3px 12px; }
.chat-typing { min-height: 1.5rem; margin: 0; padding: 0 1.5rem; color: var(--chat-muted); font-size: .75rem; }
.chat-composer { display: flex; align-items: end; gap: .6rem; margin: .25rem 1.5rem 1rem; }
.chat-composer textarea { flex: 1; min-width: 0; }
.chat-actions { display: flex; gap: .6rem; padding: 1rem 1.5rem; border-top: 1px solid var(--chat-line); background: var(--chat-soft); }
#chat-app .chat-report { margin-left: auto; background: transparent; color: #9b3340; border-color: #d9b7bc; }
#chat-app .chat-report:hover:not(:disabled) { background: #fcebed; }
.chat-footer-note { margin: 0; padding: .65rem 1.5rem 1rem; color: var(--chat-muted); font-size: .69rem; line-height: 1.6; background: var(--chat-soft); }
.chat-report-form { padding: 1.25rem 1.5rem; border-top: 1px solid var(--chat-line); }
.chat-report-form label { display: block; font-weight: 700; margin-bottom: .65rem; }
.chat-report-actions { display: flex; flex-wrap: wrap; gap: .6rem; }
.chat-video-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(110px, .43fr); gap: .65rem; padding: 1rem; background: #102e2c; }
.chat-video-panel { position: relative; min-width: 0; background: #193b38; border-radius: 12px; overflow: hidden; aspect-ratio: 4 / 3; }
.chat-video-panel video { width: 100%; height: 100%; object-fit: cover; display: block; }
.chat-local video { transform: scaleX(-1); }
.chat-local { align-self: start; }
.chat-video-label { position: absolute; top: .6rem; left: .6rem; background: #0009; color: #fff; padding: .25rem .5rem; border-radius: 5px; font-size: .7rem; }
.chat-video-overlay { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; text-align: center; padding: 2.25rem 1.2rem; color: #d6e8e3; background: #193b38ed; font-size: .88rem; line-height: 1.6; }
.chat-media-controls { display: flex; flex-wrap: wrap; justify-content: center; grid-column: 1 / -1; gap: .5rem; }
#chat-app .chat-media-controls .button { font-size: .77rem; min-height: 40px; }
#chat-app .chat-play { position: absolute; inset: auto .5rem .5rem; font-size: .75rem; }
#chat-app[data-mode=video] .chat-conversation { height: 190px; }
#chat-app[data-mode=video] .chat-empty-mark { display: none; }
.chat-sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; padding: 0; margin: -1px; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
[data-theme=dark] #chat-app {
  --chat-ink: #e2f2ed; --chat-muted: #acc6c0; --chat-teal: #57c7b8;
  --chat-teal-hover: #72d7c9; --chat-line: #35544e; --chat-bg: #142b27; --chat-soft: #1c3832;
}
[data-theme=dark] #chat-app .button:not(.button-secondary):not(.chat-report) { color: #102e28; }
[data-theme=dark] #chat-app .chat-message-own { background: #235448; border-color: #41776a; }
[data-theme=dark] #chat-app .chat-report { color: #f6adb5; }
@media (max-width: 800px) {
  #chat-app { margin-top: 1rem; }
  .chat-layout { grid-template-columns: 1fr; gap: 1rem; }
  .chat-setup { padding: 1.25rem; }
  #chat-app[data-phase=active] .chat-setup #chat-admission,
  #chat-app[data-phase=searching] .chat-setup #chat-admission { display: none; }
  #chat-app:is([data-phase=active], [data-phase=searching]) .chat-setup :is(.chat-eyebrow, h2, .chat-muted, .chat-start, .chat-start + .chat-help) { display: none; }
  #chat-app:is([data-phase=active], [data-phase=searching]) .chat-setup:not(:has(.chat-notice:not([hidden]))) { display: none; }
  .chat-conversation { height: 330px; height: min(48dvh, 420px); }
  .chat-room-header { padding: 1rem; align-items: flex-start; }
  .chat-composer { margin: .25rem 1rem 1rem; }
  .chat-actions, .chat-report-form { padding: 1rem; }
  .chat-footer-note { padding: .4rem 1rem 1rem; }
  .chat-video-grid { position: relative; grid-template-columns: 1fr; padding: .65rem; }
  .chat-remote { aspect-ratio: 4 / 3; }
  .chat-local { position: absolute; bottom: 68px; right: 1.1rem; width: 26%; z-index: 1; box-shadow: 0 2px 12px #0006; border: 1px solid #ffffff50; }
  #chat-app[data-mode=video] .chat-conversation { height: 160px; }
}
@media (max-width: 380px) {
  .chat-mode { display: none; }
  #chat-app .button { padding-inline: .8rem; }
  .chat-message { max-width: 95%; }
  .chat-conversation { padding: 1rem; }
}
@media (prefers-reduced-motion: reduce) {
  #chat-app .button { transition: none; }
}