/* Persistent First Comet Teacher */
.fc-teacher{
  position:fixed;
  right:20px;
  bottom:20px;
  z-index:170;
  font-family:"Space Grotesk",system-ui,sans-serif;
}
.fc-teacher-launch{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:8px 12px;
  border:2px solid var(--line);
  border-radius:999px;
  background:var(--yellow);
  color:#171319;
  box-shadow:3px 3px 0 var(--line);
  cursor:pointer;
  font-weight:800;
}
.fc-teacher-launch span{font-size:1.08rem}
.fc-teacher-launch b{font-size:.78rem}
.fc-teacher-launch i{
  width:7px;height:7px;border-radius:50%;
  background:var(--green);border:1px solid #171319;
}
.fc-teacher-panel{
  position:absolute;
  right:0;
  bottom:58px;
  width:min(390px,calc(100vw - 32px));
  max-height:min(680px,calc(100vh - 100px));
  overflow:auto;
  padding:16px;
  border:2px solid var(--line);
  border-radius:16px;
  background:var(--paper);
  color:var(--ink);
  box-shadow:8px 8px 0 var(--line);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px) scale(.98);
  transform-origin:bottom right;
  transition:opacity .16s ease,transform .16s ease,visibility .16s;
}
.fc-teacher.open .fc-teacher-panel{
  opacity:1;visibility:visible;transform:none;
}
.fc-teacher-panel>header{
  display:flex;align-items:flex-start;justify-content:space-between;
  gap:12px;padding-bottom:11px;border-bottom:1.5px solid var(--line);
}
.fc-teacher-panel>header>div{display:grid;gap:3px}
.fc-teacher-panel>header .eyebrow{font-size:.6rem}
.fc-teacher-panel>header b{color:var(--green);font:800 .58rem "DM Mono",monospace;letter-spacing:.06em}
.fc-teacher-panel>header>button{
  width:32px;height:32px;border:1.5px solid var(--line);border-radius:8px;
  background:var(--panel);color:var(--ink);cursor:pointer;font-size:1rem;
}
.fc-teacher-context{
  display:grid;grid-template-columns:auto 1fr;gap:3px 9px;
  margin:13px 0 10px;padding:10px 11px;border:1.5px solid var(--line);
  border-radius:10px;background:var(--panel);
}
.fc-teacher-context span{
  grid-row:1/3;align-self:start;margin-top:2px;
  color:var(--coral);font:800 .55rem "DM Mono",monospace;letter-spacing:.08em;
}
.fc-teacher-context b{font-size:.84rem;line-height:1.2}
.fc-teacher-context small{color:var(--muted);font-size:.69rem;line-height:1.35}
.fc-teacher-message{
  padding:2px 2px 12px;
  font-size:.86rem;line-height:1.55;
}
.fc-teacher-actions{
  display:flex;flex-wrap:wrap;gap:6px;
  padding-top:11px;border-top:1px solid color-mix(in srgb,var(--line) 40%,transparent);
}
.fc-teacher-actions button{
  padding:7px 9px;border:1.5px solid var(--line);border-radius:999px;
  background:var(--panel);color:var(--ink);cursor:pointer;
  font-size:.68rem;font-weight:750;
}
.fc-teacher-actions button:hover{background:var(--yellow-soft)}
.fc-teacher-actions button[data-teacher-action="understood"]{background:var(--green-soft)}
.fc-teacher-actions button[data-teacher-action="lost"]{border-color:var(--coral)}
.fc-teacher-response{
  margin-top:10px;padding:11px 12px;border:1.5px solid var(--line);
  border-left:4px solid var(--blue);border-radius:9px;background:var(--panel);
}
.fc-teacher-response p{margin:0;font-size:.78rem;line-height:1.55}
.fc-teacher-response.positive{border-left-color:var(--green)}
.fc-teacher-response.support{border-left-color:var(--coral)}
.fc-teacher-response.challenge{border-left-color:var(--yellow)}
.fc-teacher-response.example{
  border-left-color:var(--blue);
  font-family:"DM Mono",monospace;
  white-space:normal;
}
.fc-teacher-memory{
  margin-top:12px;border-top:1px solid color-mix(in srgb,var(--line) 38%,transparent);
}
.fc-teacher-memory summary{
  padding:11px 1px 6px;cursor:pointer;color:var(--muted);
  font-size:.66rem;font-weight:800;
}
.fc-teacher-memory>div{display:grid;gap:7px;padding-top:4px}
.fc-teacher-memory>div>div{
  padding:8px 9px;border:1px solid var(--line);border-radius:8px;background:var(--panel);
}
.fc-teacher-memory span{
  color:var(--muted);font:800 .53rem "DM Mono",monospace;letter-spacing:.06em;
}
.fc-teacher-memory p{margin:3px 0 0;font-size:.7rem;line-height:1.4;text-transform:capitalize}
.fc-teacher-local{
  margin:10px 0 0;color:var(--muted);font-size:.6rem;line-height:1.4;
}

.command-bar:not([hidden]) ~ .fc-teacher{bottom:20px}
.app.cse110-presentation-mode ~ .fc-teacher{
  right:16px;bottom:16px;
}
.app.cse110-presentation-mode ~ .fc-teacher .fc-teacher-launch b{display:none}

.dark .fc-teacher-launch{color:#171319}
.dark .fc-teacher-panel{background:var(--paper)}
.dark .fc-teacher-actions button[data-teacher-action="understood"]{
  color:var(--ink);
}

@media(max-width:700px){
  .fc-teacher{
    right:10px;
    bottom:76px;
  }
  .fc-teacher-launch{
    min-height:40px;padding:7px 10px;
  }
  .fc-teacher-launch b{display:none}
  .fc-teacher-panel{
    position:fixed;
    left:10px;right:10px;bottom:128px;
    width:auto;
    max-height:min(610px,calc(100vh - 150px));
    transform:translateY(12px);
  }
  .app.cse110-presentation-mode ~ .fc-teacher{
    bottom:12px;
  }
  .app.cse110-presentation-mode ~ .fc-teacher .fc-teacher-panel{
    bottom:62px;
  }
}
@media(prefers-reduced-motion:reduce){
  .fc-teacher-panel{transition:none}
}
.fc-teacher-ask{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:7px;
  margin:2px 0 11px;
}
.fc-teacher-ask input{
  min-width:0;
  height:38px;
  padding:0 10px;
  border:1.5px solid var(--line);
  border-radius:9px;
  background:var(--panel);
  color:var(--ink);
  outline:none;
  font-size:.72rem;
}
.fc-teacher-ask input:focus{
  border-color:var(--blue);
  box-shadow:0 0 0 2px color-mix(in srgb,var(--blue) 18%,transparent);
}
.fc-teacher-ask button{
  padding:0 11px;
  border:1.5px solid var(--line);
  border-radius:9px;
  background:var(--blue);
  color:#fff;
  cursor:pointer;
  font-size:.68rem;
  font-weight:800;
}
.fc-teacher-response.answer{border-left-color:var(--green)}


/* Teacher character choice onboarding */
.fc-teacher-choice-card{
  width:min(620px,100%);
  border-top-color:var(--coral);
}
.fc-teacher-choice-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}
.fc-teacher-choice-grid>button{
  display:grid;
  grid-template-columns:92px minmax(0,1fr);
  gap:12px;
  align-items:center;
  padding:10px;
  border:2px solid var(--line);
  border-radius:13px;
  background:var(--panel);
  color:var(--ink);
  text-align:left;
  cursor:pointer;
  transition:transform .14s ease,background .14s ease,box-shadow .14s ease;
}
.fc-teacher-choice-grid>button:hover{
  transform:translateY(-2px);
  background:var(--yellow-soft);
}
.fc-teacher-choice-grid>button.selected{
  background:var(--yellow-soft);
  box-shadow:4px 4px 0 var(--line);
  outline:3px solid color-mix(in srgb,var(--coral) 34%,transparent);
}
.fc-teacher-choice-grid img{
  width:92px;
  height:92px;
  object-fit:cover;
  object-position:center;
  border:1.5px solid var(--line);
  border-radius:11px;
  background:var(--cream);
}
.fc-teacher-choice-grid span,
.fc-teacher-choice-grid b,
.fc-teacher-choice-grid small{display:block}
.fc-teacher-choice-grid b{font-size:.9rem}
.fc-teacher-choice-grid small{margin-top:4px;color:var(--muted);font-size:.68rem;line-height:1.35}
.fc-teacher-choice-card [data-teacher-choice-save]:disabled{opacity:.42;cursor:not-allowed}

.fc-teacher-launch-avatar{
  width:28px;height:28px;object-fit:cover;border-radius:50%;
  border:1.5px solid #171319;background:var(--cream);
}
.fc-teacher-identity{
  display:flex!important;
  align-items:center;
  gap:9px;
}
.fc-teacher-identity>div{display:grid;gap:3px}
.fc-teacher-head-avatar{
  width:42px;height:42px;object-fit:cover;border-radius:10px;
  border:1.5px solid var(--line);background:var(--cream);
}
@media(max-width:560px){
  .fc-teacher-choice-grid{grid-template-columns:1fr}
  .fc-teacher-choice-grid>button{grid-template-columns:76px minmax(0,1fr)}
  .fc-teacher-choice-grid img{width:76px;height:76px}
}


/* Age onboarding + visible teacher character */
.fc-age-card{
  width:min(500px,100%);
  border-top-color:var(--blue);
}
.fc-age-card input[type="number"]{
  appearance:textfield;
}
.fc-age-card input[type="number"]::-webkit-inner-spin-button,
.fc-age-card input[type="number"]::-webkit-outer-spin-button{
  appearance:none;
  margin:0;
}

.fc-teacher-character-stage{
  display:grid;
  grid-template-columns:92px minmax(0,1fr);
  gap:12px;
  align-items:end;
  margin:12px 0 10px;
  min-height:104px;
  padding:10px 12px 0;
  overflow:hidden;
  border:1.5px solid var(--line);
  border-radius:12px;
  background:
    radial-gradient(circle at 90% 10%,rgba(255,211,61,.25),transparent 30%),
    linear-gradient(135deg,var(--yellow-soft),var(--paper));
}
.fc-teacher-character-stage[hidden]{display:none!important}
.fc-teacher-character-stage>img{
  width:92px;
  height:104px;
  align-self:end;
  object-fit:cover;
  object-position:center 18%;
  border:1.5px solid var(--line);
  border-bottom:0;
  border-radius:12px 12px 0 0;
  background:var(--cream);
}
.fc-teacher-character-copy{
  align-self:center;
  display:grid;
  gap:5px;
  padding-bottom:10px;
}
.fc-teacher-character-copy span{
  width:max-content;
  padding:3px 6px;
  border-radius:5px;
  background:var(--coral);
  color:#fff;
  font:800 .52rem "DM Mono",monospace;
  letter-spacing:.07em;
}
.fc-teacher-character-copy b{
  max-width:220px;
  font-size:.82rem;
  line-height:1.4;
}
body[data-age-mode="adult-playful"] .fc-teacher-character-stage{
  background:
    radial-gradient(circle at 90% 10%,rgba(255,90,54,.18),transparent 32%),
    linear-gradient(135deg,var(--yellow-soft),var(--paper));
}
@media(max-width:420px){
  .fc-teacher-character-stage{
    grid-template-columns:74px minmax(0,1fr);
  }
  .fc-teacher-character-stage>img{
    width:74px;
    height:90px;
  }
  .fc-teacher-character-copy b{font-size:.76rem}
}


/* Finished teacher character presentation */
.fc-teacher-panel{
  width:min(430px,calc(100vw - 32px));
}
.fc-teacher-character-stage{
  grid-template-columns:120px minmax(0,1fr);
  min-height:148px;
  padding:12px 14px 0;
}
.fc-teacher-character-stage>img{
  width:120px;
  height:148px;
  object-position:center 16%;
}
.fc-teacher-character-copy{
  gap:7px;
  padding-bottom:18px;
}
.fc-teacher-character-copy b{
  max-width:240px;
  font-size:.9rem;
  line-height:1.45;
}
@media(max-width:560px){
  .fc-teacher-character-stage{
    grid-template-columns:92px minmax(0,1fr);
    min-height:112px;
  }
  .fc-teacher-character-stage>img{
    width:92px;
    height:112px;
  }
  .fc-teacher-character-copy{
    padding-bottom:10px;
  }
}


/* Face-forward teacher portrait */
.fc-teacher-launch-avatar{
  width:34px;
  height:34px;
  object-fit:cover;
  object-position:center 22%;
}
.fc-teacher-head-avatar{
  width:56px;
  height:56px;
  object-fit:cover;
  object-position:center 22%;
  border-radius:14px;
}
.fc-teacher-panel{
  width:min(460px,calc(100vw - 32px));
}
.fc-teacher-character-stage{
  grid-template-columns:150px minmax(0,1fr);
  min-height:168px;
  align-items:center;
  padding:10px 14px;
}
.fc-teacher-character-stage>img{
  width:150px;
  height:150px;
  align-self:center;
  object-fit:cover;
  object-position:center 20%;
  border:2px solid var(--line);
  border-radius:18px;
}
.fc-teacher-character-copy{
  align-self:center;
  padding-bottom:0;
}
@media(max-width:560px){
  .fc-teacher-panel{
    width:auto;
  }
  .fc-teacher-character-stage{
    grid-template-columns:110px minmax(0,1fr);
    min-height:126px;
    padding:8px 10px;
  }
  .fc-teacher-character-stage>img{
    width:110px;
    height:110px;
    border-radius:15px;
  }
  .fc-teacher-head-avatar{
    width:48px;
    height:48px;
  }
}


/* Force selected teacher portrait area visible */
body[data-teacher="male"] .fc-teacher-character-stage,
body[data-teacher="female"] .fc-teacher-character-stage{
  display:grid!important;
}
body[data-teacher="male"] .fc-teacher-launch-avatar,
body[data-teacher="male"] .fc-teacher-head-avatar,
body[data-teacher="female"] .fc-teacher-launch-avatar,
body[data-teacher="female"] .fc-teacher-head-avatar{
  display:block!important;
}