/* AlphaTutor GLOBAL · Mia Spatial Studio
   Selected visual direction, 2026-09-09.
   The legacy stylesheet remains the functional baseline; this file owns the
   international shell, responsive hierarchy, and shared visual tokens. */

body.spatial-ui {
  --paper: #f8f6f0;
  --card: #ffffff;
  --ink: #102922;
  --ink-soft: #64706b;
  --accent: #0d5f43;
  --accent-soft: #ddfb72;
  --line: #e4e3dd;
  --green-deep: #0a3027;
  --green-quiet: #e8f2ed;
  --lime: #ddfb72;
  --lavender: #8068ee;
  --lavender-soft: #eeeaff;
  --coral: #ef6f61;
  --sand: #f5efe3;
  --sans: "Avenir Next", Avenir, "Helvetica Neue", Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  letter-spacing: 0;
}

body.spatial-ui * {
  scrollbar-color: #c9cec9 transparent;
}

body.spatial-ui :focus-visible {
  outline: 3px solid rgba(128, 104, 238, .46);
  outline-offset: 3px;
}

body.spatial-ui button,
body.spatial-ui input,
body.spatial-ui textarea,
body.spatial-ui select {
  font-family: var(--sans);
}

body.spatial-ui button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: var(--ink);
  box-shadow: none;
  font-size: 14px;
  font-weight: 650;
  transform: none;
  transition: background-color .16s ease, border-color .16s ease,
    color .16s ease, transform .16s ease;
}

body.spatial-ui button:hover {
  border-color: #c6cbc7;
  background: #f5f6f3;
  transform: none;
}

body.spatial-ui button:active {
  transform: scale(.985);
  box-shadow: none;
}

body.spatial-ui button.primary {
  border-color: var(--green-deep);
  background: var(--green-deep);
  color: #fff;
  box-shadow: none;
}

body.spatial-ui button.primary:hover {
  border-color: #12483a;
  background: #12483a;
}

body.spatial-ui input,
body.spatial-ui textarea,
body.spatial-ui select {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  box-shadow: none;
}

body.spatial-ui input::placeholder,
body.spatial-ui textarea::placeholder {
  color: #929b96;
}

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

/* ── International application shell ─────────────────────────── */
body.spatial-ui #main {
  display: grid;
  grid-template-columns: 156px minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  height: 100dvh;
  min-height: 640px;
  overflow: hidden;
  background: var(--paper);
}

body.spatial-ui #main.hidden {
  display: none;
}

body.spatial-ui #main > header {
  grid-column: 1;
  grid-row: 1;
  z-index: 12;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
  min-width: 0;
  padding: 24px 14px 18px;
  border: 0;
  border-right: 1px solid rgba(255,255,255,.08);
  border-radius: 0;
  background: var(--green-deep);
  color: #fff;
  box-shadow: none;
  backdrop-filter: none;
  animation: none;
}

body.spatial-ui .brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  margin: 0 4px 24px;
  color: #fff;
  font-family: var(--sans) !important;
  font-size: 19px;
  font-weight: 750;
  letter-spacing: -.02em;
}

body.spatial-ui .brand img {
  width: 56px;
  height: 56px;
  border: 0;
  border-radius: 17px;
  box-shadow: none;
}

body.spatial-ui .brand .slogan {
  max-width: 125px;
  margin: -5px 0 0;
  padding: 0;
  border: 0;
  color: rgba(255,255,255,.58);
  font-family: var(--sans) !important;
  font-size: 11.5px;
  font-weight: 550;
  line-height: 1.45;
  letter-spacing: .01em;
}

body.spatial-ui nav.top {
  display: flex;
  flex: 0 1 auto;
  flex-direction: column;
  gap: 4px;
  width: 100%;
  color: rgba(255,255,255,.7);
  font-size: 13.5px;
}

body.spatial-ui nav.top a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 13px;
  border: 0;
  border-radius: 13px;
  color: rgba(255,255,255,.72);
  font-weight: 600;
  text-decoration: none;
  transition: background-color .16s ease, color .16s ease;
}

body.spatial-ui nav.top a:hover {
  background: rgba(255,255,255,.08);
  color: #fff;
}

body.spatial-ui nav.top a.on {
  border: 0;
  background: var(--lime);
  color: #102922;
  font-weight: 750;
}

body.spatial-ui #main > header .spacer {
  min-height: 12px;
}

body.spatial-ui .lang-btn,
body.spatial-ui .tutor-btn,
body.spatial-ui .child-chip,
body.spatial-ui .flame-chip {
  width: 100%;
  min-height: 42px;
  margin: 0;
  border: 1px solid rgba(255,255,255,.11) !important;
  border-radius: 13px;
  background: rgba(255,255,255,.06) !important;
  color: rgba(255,255,255,.78);
  box-shadow: none !important;
  backdrop-filter: none;
}

body.spatial-ui .lang-btn::before,
body.spatial-ui .tutor-btn::before,
body.spatial-ui .child-chip::before {
  display: none;
}

body.spatial-ui .lang-btn {
  padding: 4px;
}

body.spatial-ui .lang-btn .lang-knob {
  top: 4px;
  bottom: 4px;
  left: 4px;
  width: calc(50% - 4px);
  border-radius: 9px;
  background: var(--lime);
  box-shadow: none;
}

body.spatial-ui .lang-btn span:first-of-type,
body.spatial-ui .lang-btn.en span:last-of-type {
  color: var(--green-deep);
}

body.spatial-ui .lang-btn span:last-of-type,
body.spatial-ui .lang-btn.en span:first-of-type {
  color: rgba(255,255,255,.62);
}

body.spatial-ui .child-chip {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 34px;
  gap: 2px;
  padding: 4px;
}

body.spatial-ui .child-chip select {
  min-width: 0;
  padding: 7px 8px;
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 12.5px;
  box-shadow: none;
}

body.spatial-ui .child-chip select option {
  color: var(--ink);
}

body.spatial-ui .icon-btn {
  min-width: 38px;
  min-height: 32px;
  padding: 0 7px !important;
  color: rgba(255,255,255,.74);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
}

body.spatial-ui .tutor-btn {
  padding: 0 12px;
  font-size: 12.5px;
}

body.spatial-ui .workspace {
  grid-column: 2;
  grid-row: 1;
  display: grid;
  grid-template-columns: minmax(320px, 380px) minmax(0, 1fr);
  grid-template-areas: "conversation canvas";
  gap: 0;
  min-width: 0;
  min-height: 0;
  padding: 0;
  overflow: hidden;
  background: var(--paper);
}

/* One tutoring system, two attention modes. Text mode buys canvas space;
   live voice mode gives Mia presence and keeps the transcript one click away. */
body.spatial-ui.text-tutor-active .workspace {
  grid-template-columns: minmax(300px, 320px) minmax(0, 1fr);
}

body.spatial-ui.voice-tutor-active .workspace {
  grid-template-columns: minmax(310px, 340px) minmax(0, 1fr);
}

body.spatial-ui .chat {
  grid-area: conversation;
  display: flex;
  min-width: 0;
  min-height: 0;
  gap: 0;
  padding: 0;
  border-right: 1px solid var(--line);
  background: #fbfaf6;
  animation: none;
}

body.spatial-ui .media {
  grid-area: canvas;
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 0;
  padding: 24px 24px 18px;
  background: #f4f3ee;
  animation: none;
}

/* ── Mia companion column ───────────────────────────────────── */
body.spatial-ui .chat-panel {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
  border: 0;
  border-radius: 0;
  background: #fbfaf6;
  box-shadow: none;
  backdrop-filter: none;
}

body.spatial-ui .chat-panel::before {
  display: none;
}

body.spatial-ui .mia-presence {
  position: relative;
  flex: 0 0 clamp(230px, 34vh, 330px);
  min-height: 210px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--sand);
}

body.spatial-ui.text-tutor-active .mia-presence {
  display: none;
}

body.spatial-ui.voice-tutor-active .mia-presence {
  display: block;
}

body.spatial-ui .mia-presence::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 44%;
  background: rgba(10,48,39,.78);
  pointer-events: none;
}

body.spatial-ui .mia-presence img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 24%;
  filter: saturate(.92) contrast(.98);
}

body.spatial-ui .mia-presence-copy {
  position: absolute;
  z-index: 2;
  top: 22px;
  left: 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 235px;
  padding: 12px 14px;
  border-radius: 13px;
  background: rgba(255,255,255,.88);
  color: var(--green-deep);
}

body.spatial-ui .mia-kicker {
  margin-bottom: 3px;
  color: var(--lavender);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}

body.spatial-ui .mia-presence-copy strong {
  font-family: var(--serif);
  font-size: 31px;
  line-height: 1;
}

body.spatial-ui .mia-presence-copy > span:last-child {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.35;
}

body.spatial-ui .mia-listening {
  position: absolute;
  z-index: 3;
  right: 18px;
  bottom: 17px;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 0 13px;
  border-radius: 999px;
  background: var(--lime);
  color: var(--green-deep);
  font-size: 12.5px;
  font-weight: 750;
}

body.spatial-ui .mia-listening i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: global-listening 1.8s ease-in-out infinite;
}

@keyframes global-listening {
  0%, 100% { opacity: .4; transform: scale(.8); }
  50% { opacity: 1; transform: scale(1); }
}

body.spatial-ui .chat-panel > .panel-title {
  flex: 0 0 auto;
  gap: 5px;
  min-height: 48px;
  padding: 12px 16px 6px !important;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

body.spatial-ui .chat-panel > .panel-title .mini-btn {
  min-height: 28px;
  margin: 0;
  padding: 0 8px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 10.5px;
  font-weight: 650;
  letter-spacing: 0;
  text-transform: none;
}

body.spatial-ui .voice-mode-title,
body.spatial-ui .transcript-toggle {
  display: none;
}

body.spatial-ui.voice-tutor-active .text-mode-title {
  display: none;
}

body.spatial-ui.voice-tutor-active .voice-mode-title,
body.spatial-ui.voice-tutor-active .transcript-toggle {
  display: inline-flex;
}

body.spatial-ui.voice-tutor-active:not(.voice-transcript-open) .chat-panel > .panel-title {
  margin-top: auto;
  padding: 10px 16px 14px !important;
  border-top: 1px solid var(--line);
}

body.spatial-ui.voice-tutor-active:not(.voice-transcript-open) .mia-presence {
  flex: 1 1 auto;
  min-height: 0;
}

body.spatial-ui.voice-tutor-active:not(.voice-transcript-open) .mia-presence img {
  object-position: center center;
}

body.spatial-ui.voice-tutor-active:not(.voice-transcript-open) #messages,
body.spatial-ui.voice-tutor-active:not(.voice-transcript-open) .chat-bar,
body.spatial-ui.voice-tutor-active:not(.voice-transcript-open) #btn-pause,
body.spatial-ui.voice-tutor-active:not(.voice-transcript-open) #btn-history,
body.spatial-ui.voice-tutor-active:not(.voice-transcript-open) #btn-new-chat {
  display: none;
}

body.spatial-ui.voice-tutor-active.voice-transcript-open .mia-presence {
  flex-basis: clamp(170px, 27vh, 240px);
  min-height: 170px;
}

body.spatial-ui #messages {
  flex: 1;
  min-height: 120px;
  gap: 10px;
  padding: 10px 18px 18px;
  background: #fbfaf6;
}

body.spatial-ui .msg {
  max-width: 92%;
  padding: 11px 13px;
  border-radius: 13px;
  font-size: 14px;
  line-height: 1.55;
  box-shadow: none;
  animation: global-message-in .2s ease-out both;
}

body.spatial-ui .msg.bot {
  align-self: flex-start;
  border: 0;
  border-left: 3px solid var(--lime);
  border-radius: 2px 13px 13px 2px;
  background: #eef1eb;
  color: var(--ink);
}

body.spatial-ui .msg.user {
  align-self: flex-end;
  border: 0;
  border-radius: 13px 2px 13px 13px;
  background: var(--lavender);
  color: #fff;
}

body.spatial-ui .msg.sys,
body.spatial-ui .msg.thinking {
  color: var(--ink-soft);
  font-size: 12px;
}

@keyframes global-message-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

body.spatial-ui .chat-bar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  gap: 7px;
  padding: 12px 14px 15px;
  border-top: 1px solid var(--line);
  background: #fff;
}

body.spatial-ui #chat-input {
  min-width: 0;
  height: 44px;
  padding: 0 12px;
  border-radius: 13px;
  font-size: 13px;
}

body.spatial-ui .chat-bar button {
  min-height: 44px;
  padding: 0 12px;
  border-radius: 13px;
  white-space: nowrap;
  font-size: 12px;
}

body.spatial-ui #btn-solved {
  min-width: 62px;
  padding: 0 10px;
  color: var(--accent);
  border-color: #b9dfc7;
  background: #edf8f0;
}

body.spatial-ui #btn-mic {
  border-color: #cfc8fa;
  background: var(--lavender-soft);
  color: #5842c7;
}

body.spatial-ui .today-panel {
  display: none;
}

/* ── Solution Canvas ────────────────────────────────────────── */
body.spatial-ui #stage {
  flex: 0 0 90px;
  width: 100%;
  height: 90px;
  min-height: 90px;
  max-width: none;
  margin: 0 0 12px;
  border: 1px dashed #c9cbc4;
  border-radius: 17px;
  background: #ebece6;
  box-shadow: none;
  transition: height .22s ease, min-height .22s ease;
}

body.spatial-ui #stage:has(video:not([aria-hidden="true"])) {
  height: min(28vh, 260px);
  min-height: 180px;
}

body.spatial-ui body.board-live #stage,
body.spatial-ui.board-live #stage {
  height: 78px;
  min-height: 78px;
}

body.spatial-ui #stage-empty {
  max-width: 520px;
  padding: 0 20px;
  color: #68736d;
  font-size: 13px;
  line-height: 1.45;
  letter-spacing: 0;
  text-align: center;
}

body.spatial-ui #board-panel {
  flex: 1;
  min-height: 300px;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: none;
  backdrop-filter: none;
  overflow: auto;
}

body.spatial-ui .board-head {
  position: sticky;
  z-index: 5;
  top: 0;
  display: flex;
  gap: 6px;
  min-height: 58px;
  padding: 9px 13px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(14px);
}

body.spatial-ui .board-title {
  margin-right: 4px;
  color: var(--ink);
  font-family: var(--sans) !important;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -.01em;
}

body.spatial-ui #board-state {
  color: var(--ink-soft);
  font-size: 11.5px;
}

body.spatial-ui .board-head button {
  min-height: 32px;
  padding: 0 10px;
  border-radius: 9px;
  font-size: 11px;
}

body.spatial-ui #board-next {
  border-color: var(--green-deep);
  background: var(--green-deep);
}

body.spatial-ui #jxgbox {
  min-height: 260px;
  background: #fff;
}

body.spatial-ui #board-panel.has-ledger #jxgbox {
  height: clamp(230px, 45%, 410px);
  min-height: 230px;
}

body.spatial-ui #board-notes {
  padding: 20px 26px 28px;
}

body.spatial-ui .note-line {
  border-left-color: var(--lavender);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
}

body.spatial-ui .bl-step.now .bl-badge {
  background: var(--lavender);
  box-shadow: 0 0 0 5px rgba(128,104,238,.12);
}

body.spatial-ui .bl-step.done .bl-badge {
  border-color: var(--accent);
  color: var(--accent);
}

body.spatial-ui .board-fact {
  border-color: #d8d2fb;
  border-radius: 9px;
  background: var(--lavender-soft);
  color: #4c3caf;
  box-shadow: none;
}

body.spatial-ui #board-caption {
  border-top-color: var(--line);
  background: #f7f7f4;
}

body.spatial-ui .media-bar {
  position: relative;
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 9px;
  min-height: 76px;
  padding: 12px 14px 0;
  flex-wrap: nowrap;
}

body.spatial-ui .tool-seg {
  display: inline-flex;
  gap: 3px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fff;
  box-shadow: none;
}

body.spatial-ui .media-bar .tool {
  min-height: 42px;
  padding: 0 11px;
  border: 0;
  border-radius: 11px;
  background: transparent;
  color: var(--ink);
  box-shadow: none;
  font-size: 12.5px;
}

body.spatial-ui .media-bar .tool:hover {
  background: #f1f2ed;
  box-shadow: none;
}

body.spatial-ui .media-bar .tool.key {
  background: var(--lavender-soft);
  color: #4c3caf;
  box-shadow: none;
}

body.spatial-ui .media-bar .tool.voice {
  min-width: 148px;
  min-height: 48px;
  justify-content: center;
  border: 0;
  border-radius: 14px;
  background: var(--green-deep);
  color: #fff;
  box-shadow: none;
}

body.spatial-ui .media-bar .tool.voice:hover,
body.spatial-ui .media-bar .tool.voice.on {
  background: #12483a;
  color: #fff;
  box-shadow: none;
  transform: none;
}

body.spatial-ui .media-bar .tool.voice .ti {
  display: none;
}

body.spatial-ui .media-bar .voice-stack {
  margin-left: auto;
}

body.spatial-ui .vspeed {
  margin-bottom: 4px;
  color: var(--ink-soft);
}

body.spatial-ui .spatial-more-trigger {
  min-width: 62px;
  border: 1px solid var(--line) !important;
  background: #fff !important;
}

body.spatial-ui .spatial-extra-tools {
  position: absolute;
  z-index: 20;
  right: 14px;
  bottom: 66px;
  display: flex;
  padding: 7px;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 18px 42px rgba(16,41,34,.16);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity .16s ease, visibility .16s ease, transform .16s ease;
}

body.spatial-ui .spatial-extra-tools.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
}

body.spatial-ui .spatial-extra-tools #btn-wrong {
  display: inline-flex;
  min-height: 46px;
  padding: 7px 10px;
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 700;
  white-space: normal;
}

body.spatial-ui .media-bar .ti {
  filter: saturate(.72) contrast(.95);
}

body.spatial-ui footer,
body.spatial-ui #btn-story {
  display: none;
}

/* ── Auth, setup and modal family ───────────────────────────── */
body.spatial-ui #auth-gate,
body.spatial-ui #wizard {
  min-height: 100dvh;
  padding: 24px;
  background: var(--paper);
}

body.spatial-ui .wizard-card,
body.spatial-ui .modal-card {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(16,41,34,.12);
  backdrop-filter: none;
}

body.spatial-ui .wizard-card::before,
body.spatial-ui .modal-card::before,
body.spatial-ui .cfg-item::before {
  display: none;
}

body.spatial-ui .auth-card {
  width: min(460px, 94vw);
  padding: 34px;
}

body.spatial-ui .locale-brand-en strong {
  color: var(--green-deep);
  font-family: var(--sans);
  letter-spacing: -.03em !important;
}

body.spatial-ui .auth-tabs {
  padding: 4px;
  border-radius: 14px;
  background: #eff0ec;
}

body.spatial-ui .auth-tabs button {
  border: 0;
  background: transparent;
}

body.spatial-ui .auth-tabs button.active,
body.spatial-ui .tabs button.active {
  background: var(--green-deep);
  color: #fff;
}

body.spatial-ui .modal {
  background: rgba(10,48,39,.32);
  backdrop-filter: blur(8px);
}

body.spatial-ui .cfg-item,
body.spatial-ui .version,
body.spatial-ui .invite-row,
body.spatial-ui .history-item,
body.spatial-ui .kid-row {
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #f7f7f4;
  box-shadow: none;
}

/* ── Responsive hierarchy ───────────────────────────────────── */
@media (max-width: 1180px) {
  body.spatial-ui #main {
    grid-template-columns: 148px minmax(0, 1fr);
  }

  body.spatial-ui .workspace {
    grid-template-columns: minmax(290px, 330px) minmax(0, 1fr);
  }

  body.spatial-ui #main > header {
    padding-inline: 11px;
  }

  body.spatial-ui .brand {
    margin-inline: 5px;
    font-size: 17px;
  }

  body.spatial-ui .media {
    padding: 18px 18px 14px;
  }

  body.spatial-ui .media-bar {
    overflow-x: auto;
  }
}

@media (min-width: 921px) and (max-height: 800px) {
  body.spatial-ui #main > header {
    gap: 5px;
    padding: 14px 12px 12px;
  }

  body.spatial-ui .brand {
    gap: 7px;
    margin: 0 5px 8px;
  }

  body.spatial-ui .brand img {
    width: 44px;
    height: 44px;
    border-radius: 14px;
  }

  body.spatial-ui .brand .slogan {
    font-size: 10.5px;
    line-height: 1.3;
  }

  body.spatial-ui nav.top {
    gap: 2px;
  }

  body.spatial-ui nav.top a {
    min-height: 35px;
    padding: 0 11px;
    border-radius: 11px;
    font-size: 12.5px;
  }

  body.spatial-ui #main > header .spacer {
    min-height: 2px;
  }

  body.spatial-ui .lang-btn,
  body.spatial-ui .tutor-btn,
  body.spatial-ui .child-chip,
  body.spatial-ui .flame-chip {
    min-height: 36px;
  }
}

@media (max-width: 920px) {
  body.spatial-ui {
    height: auto;
    min-height: 100dvh;
    overflow-y: auto;
  }

  body.spatial-ui #main {
    display: flex;
    height: auto;
    min-height: 100dvh;
    overflow: visible;
  }

  body.spatial-ui #main > header {
    position: sticky;
    top: 0;
    z-index: 40;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-rows: auto auto;
    gap: 8px 12px;
    width: 100%;
    padding: 10px 14px;
    border-right: 0;
    border-bottom: 1px solid rgba(255,255,255,.1);
  }

  body.spatial-ui .brand {
    grid-column: 1;
    grid-row: 1;
    flex-direction: row;
    align-items: center;
    margin: 0;
    white-space: nowrap;
  }

  body.spatial-ui .brand img {
    width: 38px;
    height: 38px;
    border-radius: 11px;
  }

  body.spatial-ui .brand .slogan,
  body.spatial-ui #main > header .spacer,
  body.spatial-ui .flame-chip,
  body.spatial-ui .child-chip,
  body.spatial-ui .tutor-btn {
    display: none;
  }

  body.spatial-ui nav.top {
    grid-column: 1 / -1;
    grid-row: 2;
    flex-direction: row;
    gap: 4px;
    overflow-x: auto;
  }

  body.spatial-ui nav.top a {
    min-height: 36px;
    padding: 0 11px;
    white-space: nowrap;
  }

  body.spatial-ui .lang-btn {
    grid-column: 3;
    grid-row: 1;
    width: 112px;
  }

  body.spatial-ui .workspace {
    display: grid;
    flex: 1;
    grid-template-columns: minmax(270px, 320px) minmax(0, 1fr);
    grid-template-areas: "conversation canvas";
    min-height: 0;
    overflow: hidden;
  }

  body.spatial-ui .chat {
    min-height: 0;
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }

  body.spatial-ui .mia-presence {
    flex-basis: 250px;
  }

  body.spatial-ui .media {
    min-height: 0;
    padding: 14px;
  }

  body.spatial-ui .board-head {
    flex-wrap: wrap;
    align-content: center;
    min-height: 76px;
  }

  body.spatial-ui .media-bar {
    flex-wrap: wrap;
    align-content: center;
    min-height: 126px;
    padding-bottom: 4px;
    overflow: visible;
  }

  body.spatial-ui .media-bar .voice-stack {
    display: flex;
    width: 100%;
    margin-left: 0;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
  }

  body.spatial-ui .media-bar .voice-stack .vspeed {
    margin: 0;
  }
}

@media (max-width: 720px) {
  body.spatial-ui .workspace {
    display: flex;
    flex-direction: column;
    overflow: visible;
  }

  body.spatial-ui .chat {
    order: 1;
    min-height: 600px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  body.spatial-ui .media {
    order: 2;
    min-height: 710px;
  }
}

@media (max-width: 620px) {
  body.spatial-ui #main > header {
    grid-template-columns: auto 1fr auto;
    padding-inline: 10px;
  }

  body.spatial-ui .brand {
    font-size: 15px;
  }

  body.spatial-ui nav.top a {
    min-height: 34px;
    padding: 0 9px;
    font-size: 12px;
  }

  body.spatial-ui .lang-btn {
    width: 96px;
  }

  body.spatial-ui .chat {
    min-height: 660px;
  }

  body.spatial-ui .mia-presence {
    flex-basis: 235px;
  }

  body.spatial-ui .mia-presence-copy {
    top: 15px;
    left: 15px;
  }

  body.spatial-ui .chat-bar {
    grid-template-columns: minmax(0, 1fr) auto auto;
  }

  body.spatial-ui #btn-solved {
    display: none;
  }

  body.spatial-ui .media {
    min-height: 710px;
    padding: 12px;
  }

  body.spatial-ui .board-head {
    align-content: center;
    min-height: 54px;
  }

  body.spatial-ui .board-head #board-state {
    flex-basis: 100%;
    order: 20;
  }

  body.spatial-ui .media-bar {
    padding-inline: 0;
    overflow-x: auto;
  }

  body.spatial-ui .media-bar .tool {
    padding-inline: 9px;
  }

  body.spatial-ui .media-bar .tool.voice {
    min-width: 126px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.spatial-ui *,
  body.spatial-ui *::before,
  body.spatial-ui *::after {
    scroll-behavior: auto !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}