/* Keep the standard TeachAny controls in the course layout. */
.shell, #main { min-width: 0; }
.topbar .brand, .topbar .brand > span:last-child { min-width: 0; }
.topbar .brand-symbol, .topbar #teacher-btn { flex-shrink: 0; }
.topbar .brand-sub { white-space: normal; line-height: 1.45; }
@media (max-width: 700px) {
  .topbar { height: auto; min-height: 68px; padding-top: 10px; padding-bottom: 10px; }
  .topbar .brand { flex: 1; }
  .topbar .brand-sub { font-size: 10px; }
}
#python-ai-entry { min-width: 0; }
#python-ai-entry > p { margin: 0 0 8px; color: #b8cbe5; font-size: 11px; line-height: 1.5; }
#python-ai-entry .ai-tutor-fab {
  position: static;
  inset: auto;
  width: 100%;
  height: auto;
  min-height: 42px;
  margin: 0 0 6px;
  padding: 10px 14px;
  border: 1px solid #527cba;
  border-radius: 8px;
  background: #225cc2;
  color: #fff;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  box-shadow: none;
  z-index: auto;
  transform: none;
  transition: none;
}
#python-ai-entry .ai-tutor-fab:hover,
#python-ai-entry .ai-tutor-fab:active { transform: none; box-shadow: none; }
#python-ai-entry .ai-tutor-fab.has-unread::after { display: none; }
#python-ai-aside {
  --tutor-primary: #225cc2;
  --tutor-primary-dark: #194b9e;
  --tutor-accent: #456eaa;
  --tutor-bg: #fff;
  --tutor-bg-soft: #f3f6fb;
  --tutor-border: #d5dfed;
  --tutor-text: #203148;
  --tutor-text-soft: #61738b;
  --tutor-bubble-ai: #eef3fb;
  --tutor-bubble-user: #225cc2;
  --tutor-bubble-user-text: #fff;
  min-width: 0;
  align-self: start;
  padding: 20px 16px 24px 0;
  scroll-margin-top: 16px;
}
#python-ai-aside .ai-tutor-panel {
  position: relative;
  inset: auto;
  width: 100%;
  height: min(760px, calc(100vh - 32px));
  height: min(760px, calc(100dvh - 32px));
  max-width: 100%;
  max-height: none;
  min-width: 0;
  margin: 0;
  border: 1px solid var(--tutor-border);
  border-radius: 12px;
  box-shadow: 0 6px 20px rgb(23 43 72 / 7%);
  z-index: auto;
  transform: none;
  transition: none;
  font-family: inherit;
}
#python-ai-aside .ai-tutor-panel:not(.open) { display: none; }
#python-ai-aside .ai-tutor-panel.open { transform: none; }
#python-ai-aside .ai-tutor-header {
  flex: none;
  min-width: 0;
  gap: 6px;
  padding: 12px;
  background: #1d3d6a;
}
#python-ai-aside .ai-tutor-header .title { min-width: 0; font-size: 15px; }
#python-ai-aside .ai-tutor-header button { min-height: 32px; padding: 5px 8px; font-size: 12px; }
#python-ai-aside .btn-settings,
#python-ai-aside .btn-lang { display: none !important; }
#python-ai-aside .ai-tutor-context-bar { flex: none; padding: 9px 12px; font-size: 12px; }
#python-ai-aside .ctx-title { min-width: 0; overflow-wrap: anywhere; }
#python-ai-aside .ai-tutor-context-bar .pill { flex: none; }
#python-ai-aside .python-ai-controls { flex: none; padding: 10px 12px; border-bottom: 1px solid var(--tutor-border); background: #fff; }
#python-ai-aside .python-ai-attach-label { display: flex; align-items: flex-start; gap: 8px; margin: 0; cursor: pointer; font-size: 12px; line-height: 1.5; }
#python-ai-attach { flex: none; width: 16px; height: 16px; margin: 2px 0 0; accent-color: #225cc2; }
#python-ai-aside .python-ai-notice { margin: 8px 0 10px; color: #536780; font-size: 11px; line-height: 1.6; }
#python-ai-aside .python-ai-hints { display: flex; gap: 5px; flex-wrap: wrap; }
#python-ai-aside .python-ai-hints button {
  flex: 1 1 auto;
  min-height: 34px;
  padding: 6px 7px;
  border: 1px solid #cfdbed;
  border-radius: 7px;
  background: #edf3fd;
  color: #2c548c;
  font-size: 11px;
  line-height: 1.4;
}
#python-ai-aside .python-ai-input-help { margin: 8px 0 0; font-size: 10px; line-height: 1.5; color: #73839a; }
#python-ai-aside .ai-tutor-messages { min-width: 0; min-height: 0; overscroll-behavior: contain; padding: 12px; scrollbar-width: thin; }
#python-ai-aside .ai-tutor-bubble { max-width: 94%; min-width: 0; overflow-wrap: anywhere; font-size: 13px; padding: 9px 11px; }
#python-ai-aside .ai-tutor-input-wrap { flex: none; min-width: 0; padding: 10px; gap: 6px; }
#python-ai-aside .ai-tutor-input-wrap textarea { min-width: 0; width: 0; min-height: 58px; padding: 8px; font-size: 13px; }
#python-ai-aside .ai-tutor-input-wrap .btn-send { min-height: 42px; height: 42px; min-width: 50px; padding: 8px 10px; }
#python-ai-aside button:focus-visible,
#python-ai-aside textarea:focus-visible,
#python-ai-aside input:focus-visible { outline: 3px solid #508ff0; outline-offset: 2px; }

/* The tutor takes real space; the course keeps a full-width text area. */
body.python-ai-open .curriculum-units,
body.python-ai-open .lab { grid-template-columns: minmax(0, 1fr); }
body.python-ai-open .curriculum-hero { padding: 24px 24px 276px; min-height: 0; }
body.python-ai-open .curriculum-hero::after { top: auto; right: 24px; bottom: 14px; width: min(360px, calc(100% - 48px)); height: 262px; transform: none; }
body.python-ai-open .lesson-head { display: block; min-height: 0; }
body.python-ai-open .lesson-head > div,
body.python-ai-open .exp-heading { padding-right: 0; min-height: 0; }
body.python-ai-open .lesson-head .eyebrow,
body.python-ai-open .exp-heading > .eyebrow { width: auto; }
body.python-ai-open .lesson-head > .status-pill { position: static; display: inline-block; margin-top: 12px; }
body.python-ai-open .lesson-head::before,
body.python-ai-open .exp-heading::before { position: static; display: block; margin: 0 0 16px; right: auto; top: auto; }
body.python-ai-open .curriculum-unit::before { position: static; display: block; margin: 0 0 12px; right: auto; top: auto; }
body.python-ai-open .curriculum-unit h2 { padding-right: 0; min-height: 0; display: block; }

@media (min-width: 1200px) {
  body.python-ai-open .shell { grid-template-columns: 256px minmax(0, 1fr) 320px; }
  body.python-ai-open #main { padding-left: 28px; padding-right: 28px; }
  body.python-ai-open #python-ai-aside { position: sticky; top: 0; grid-column: 3; }
}
@media (min-width: 701px) and (max-width: 1199px) {
  body.python-ai-open .sidebar { grid-column: 1; grid-row: 1 / span 2; }
  body.python-ai-open #python-ai-aside { grid-column: 2; grid-row: 1; padding: 24px 25px 0; }
  body.python-ai-open #main { grid-column: 2; grid-row: 2; }
  #python-ai-aside .ai-tutor-panel { height: min(590px, calc(100vh - 40px)); height: min(590px, calc(100dvh - 40px)); }
}
@media (max-width: 700px) {
  #python-ai-entry { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
  #python-ai-entry > p { flex: 1 1 130px; margin: 0; }
  #python-ai-entry .ai-tutor-fab { width: auto; min-width: 110px; margin-bottom: 2px; padding: 8px 14px; }
  body.python-ai-open .shell { display: flex; flex-direction: column; }
  body.python-ai-open .sidebar { order: 0; }
  body.python-ai-open #python-ai-aside { order: 1; width: 100%; padding: 16px 16px 0; }
  body.python-ai-open #main { order: 2; width: 100%; }
  #python-ai-aside .ai-tutor-panel { height: min(590px, calc(100vh - 24px)); height: min(590px, calc(100dvh - 24px)); }
  body.python-ai-open .curriculum-hero { padding: 20px 19px 248px; }
  body.python-ai-open .curriculum-hero::after { right: 12px; bottom: 12px; width: min(320px, calc(100% - 24px)); height: 236px; }
}
@media (max-height: 500px) {
  #python-ai-aside .python-ai-notice { font-size: 10px; line-height: 1.4; margin: 6px 0; }
  #python-ai-aside .python-ai-controls { padding-top: 6px; padding-bottom: 6px; }
  #python-ai-aside .python-ai-input-help { display: none; }
  #python-ai-aside .ai-tutor-input-wrap textarea { min-height: 44px; }
}
@media print {
  #python-ai-entry, #python-ai-aside { display: none !important; }
  body.python-ai-open .shell { display: block; }
  body.python-ai-open #main { padding: 0; }
}

/* Let course inputs receive clicks while the homepage guide remains visible. */
body.python-ai-open #python-ai-aside{position:relative;z-index:7}
#main textarea,#main input,#main .run-toolbar button{position:relative;z-index:7}
@media(min-width:1200px){body.python-ai-open #python-ai-aside{position:sticky}}
/* Scoped help text; native details and the existing dialog keep their behavior. */
.course-help{font-size:14px;line-height:1.7}
.course-help .help-course{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;margin-bottom:6px}
.course-help .help-course span{font-size:12px;color:var(--muted)}
.course-help .help-steps{margin:14px 0;padding-left:21px}
.course-help .help-steps li+li{margin-top:9px}
.course-help .help-completion{padding:12px 0;border-top:1px solid var(--line);margin:14px 0 4px}
.course-help details{border-top:1px solid var(--line);padding:3px 0}
.course-help details>summary{font-size:14px;min-height:42px}
.course-help details>p{margin:4px 0 12px}
.course-help details>ul{padding-left:21px;margin:2px 0 12px}
.course-help details li+li{margin-top:6px}
.course-help a{overflow-wrap:anywhere}
.course-help .help-note{font-size:12px;color:var(--muted);line-height:1.65}
.course-help .help-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.course-help .help-actions button{max-width:100%;font-size:13px}
@media(max-width:700px){.course-help{font-size:13px;line-height:1.65}.course-help .help-steps{margin:12px 0}.course-help .help-steps li+li{margin-top:8px}.course-help .help-completion{padding:10px 0}.course-help details>summary{font-size:13px}}