/* Shared classroom visual language: warm paper, ink, and one vermilion accent. */
:root {
  --color-primary: #b94e3d;
  --color-primary-deep: #963b2e;
  --color-secondary: #914536;
  --color-background: #f7f5f0;
  --color-surface: #ffffff;
  --color-border: #dfdbd2;
  --color-foreground: #252722;
  --color-body: #43463e;
  --color-ring: #b94e3d;
  --font-body: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-display: var(--font-body);
}
body { background: #f7f5f0; }
body[data-page] .topbar { background: #fffefa; border-color: #e6e2d9; backdrop-filter: none; }
body[data-page] .brand strong { font-family: var(--font-body); }
body[data-page] .brand-mark { background: #b94e3d; box-shadow: none; transform: none; border-radius: 8px; }
body[data-page] .button { border-radius: 8px; box-shadow: none; transition: background 150ms ease, border-color 150ms ease; }
body[data-page] .button:hover { transform: none; }
body[data-page] .button-primary { background: #b94e3d; border-color: #b94e3d; color: #fff; }
body[data-page] .button-primary:hover { background: #963b2e; border-color: #963b2e; }
body[data-page] .button-quiet { background: #fffefa; border-color: #dcd7cd; color: #474940; }
body[data-page] .icon-text-button { border-radius: 8px; box-shadow: none; }
body[data-page] .topbar-actions .icon-text-button.is-active { background: #eee8df; border-color: #e1d7ca; color: #713d30; }
body[data-page] .topnav button.is-active { background: #eee8df; color: #713d30; }
body[data-page] .panel-card { border-color: #e2ded5; border-radius: 12px; box-shadow: 0 2px 5px rgb(38 35 26 / 3%); }
body[data-page] .lesson-view { background: #f7f5f0; }
body[data-page] .quiz-home > .assistant-avatar { background: #f2e4db; color: #a54332; box-shadow: none; }
body[data-page] .quiz-home-actions .button { border-width: 1px; border-radius: 16px; }
body[data-page] .quiz-home-actions .button-primary { border-color: #b94e3d; }
body[data-page="quiz"] .lesson-badge { background: #f2e4db; color: #a54332; }
body[data-page="quiz"] .quiz-confirm-button { background: #b94e3d; color: #fff; box-shadow: none; }
body[data-page="quiz"] .composer textarea,
body[data-page="quiz"] #student-group-select { border-color: #d9d4ca; border-radius: 8px; }

/* Classroom projection: reserve space and contrast for the students' questions. */
body[data-page="dashboard"] { background: #f7f5f0; }
body[data-page="dashboard"] .topbar { min-height: 36px; padding: 1px 14px; background: #fffefa; position: static; }
body[data-page="dashboard"] .brand { min-height: 30px; gap: 8px; }
body[data-page="dashboard"] .brand-mark { width: 30px; height: 30px; font-size: 20px; border-radius: 8px; }
body[data-page="dashboard"] .brand strong { font-size: 15px; }
body[data-page="dashboard"] .brand small { display: none; }
body[data-page="dashboard"] .topnav { display: none; }
body[data-page="dashboard"] .topbar { grid-template-columns: 1fr auto; }
body[data-page="dashboard"] .topbar-actions .icon-text-button { min-height: 30px; padding: 3px 10px; font-size: 13px; }
body[data-page="dashboard"] #view-dashboard { --question-size: clamp(30px, 2.35vw, 42px); padding: 6px 0 12px; background: #f7f5f0; }
body[data-page="dashboard"] .lesson-shell { width: calc(100% - 24px); max-width: none; }
body[data-page="dashboard"] .dashboard-heading { gap: 10px; margin: 0 0 4px; min-height: 34px; }
body[data-page="dashboard"] .dashboard-heading .back-button,
body[data-page="dashboard"] .dashboard-badge { display: none; }
body[data-page="dashboard"] .dashboard-heading h1 { margin: 0; font-size: 23px; letter-spacing: -0.5px; font-weight: 700; }
body[data-page="dashboard"] .live-status { padding: 3px 8px; font-size: 11px; }
body[data-page="dashboard"] .live-status span { font-size: 11px; letter-spacing: 0; }
.projection-tools { display: flex; align-items: center; gap: 6px; font-size: 13px; }
.projection-tools select { min-height: 30px; padding: 2px 6px; border: 1px solid #dcd7cd; border-radius: 7px; background: #fffefa; font-size: 13px; }
body[data-page="dashboard"] .projection-tools .button { min-height: 30px; padding: 3px 10px; border-radius: 6px; font-size: 13px; box-shadow: none; }
body[data-page="dashboard"] .quiz-teacher-settings { margin: 0; padding: 0; border: 0; background: transparent; box-shadow: none; }
body[data-page="dashboard"] .quiz-teacher-settings > summary { min-height: 24px; padding: 0 2px; font-size: 12px; line-height: 24px; }
body[data-page="dashboard"] .quiz-teacher-settings[open] { padding: 8px 12px; border: 1px solid #cbd5e1; background: #fff; }
.dashboard-information { display: flex; flex-wrap: wrap; align-items: center; gap: 0 20px; margin-bottom: 4px; }
body[data-page="dashboard"] .dashboard-information .quiz-teacher-settings[open] { width: 100%; }
body[data-page="dashboard"] .dashboard-kpis { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 22px; margin: 2px 0 6px; }
body[data-page="dashboard"] .dashboard-information .dashboard-kpis { margin: 0; }
body[data-page="dashboard"] .kpi-card { display: flex; align-items: baseline; gap: 6px; min-height: 0; padding: 0; border: 0; border-radius: 0; box-shadow: none; background: transparent; }
body[data-page="dashboard"] .kpi-card > span { font-size: 12px; font-weight: 500; }
body[data-page="dashboard"] .kpi-card > strong { margin: 0; font-family: var(--font-body); font-size: 16px; line-height: 1.4; }
body[data-page="dashboard"] .kpi-card > small { margin: 0; font-size: 11px; font-weight: 500; }
body[data-page="dashboard"] .dashboard-confirm-bar { margin: 0 0 4px; padding: 5px 0; gap: 10px; flex-direction: row; align-items: center; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
body[data-page="dashboard"] .dashboard-confirm-bar > div { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; }
body[data-page="dashboard"] .dashboard-steps { margin: 0; gap: 8px; font-size: 14px; }
body[data-page="dashboard"] #dashboard-phase-title { display: none; }
body[data-page="dashboard"] #dashboard-phase-note { display: none; }
body[data-page="dashboard"] #dashboard-confirm { min-height: 28px; padding: 2px 14px; font-size: 14px; border-radius: 6px; box-shadow: none; }
body[data-page="dashboard"] .dashboard-panel { padding: 0; border: 0; border-radius: 0; box-shadow: none; background: transparent; }
body[data-page="dashboard"] .dashboard-panel-head { align-items: center; gap: 10px; margin-bottom: 5px; }
body[data-page="dashboard"] .dashboard-panel h2 { margin: 0; font-size: 15px; }
body[data-page="dashboard"] #dashboard-pending-groups { margin: 0; color: #64748b; font-size: 12px; }
body[data-page="dashboard"] #dashboard-category-overview { display: flex; flex-wrap: wrap; gap: 12px; color: #475569; font-size: 12px; }
body[data-page="dashboard"] .similar-panel { margin: 0 0 4px; padding: 2px 0; border: 0; border-top: 1px solid #e3ded4; border-bottom: 1px solid #e3ded4; border-radius: 0; background: transparent; }
body[data-page="dashboard"] .similar-panel > summary { display: list-item; cursor: pointer; font-size: 13px; line-height: 24px; }
body[data-page="dashboard"] .similar-panel > summary h2 { display: inline; margin-right: 10px; font-size: 14px; }
body[data-page="dashboard"] .similar-summary { display: inline; margin: 0; font-size: 12px; }
.similar-expand-note { margin-left: 12px; color: #9a3412; font-size: 12px; }
body[data-page="dashboard"] .similar-panel[open] .similar-expand-note { display: none; }
body[data-page="dashboard"] .dashboard-empty { margin: 6px 0; padding: 8px; font-size: 15px; }
body[data-page="dashboard"] .dashboard-groups,
body[data-page="dashboard"] .dashboard-bars { display: block; columns: 3; column-gap: 10px; margin: 0; }
body[data-page="dashboard"] .group-report,
body[data-page="dashboard"] .category-question { display: inline-block; width: 100%; margin: 0 0 8px; padding: 8px 12px; break-inside: avoid; border: 1px solid #e0dcd3; border-radius: 12px; background: #fffefa; vertical-align: top; }
body[data-page="dashboard"] .group-report-toggle { display: block; min-height: 0; padding: 0 0 4px; }
body[data-page="dashboard"] .group-report-index { display: none; }
body[data-page="dashboard"] .group-report-title { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
body[data-page="dashboard"] .group-report-title h3 { margin: 0; font-size: 15px; line-height: 1.4; color: #7f4335; font-weight: 700; }
body[data-page="dashboard"] .group-report-title small { font-size: 11px; font-weight: 500; color: #64748b; }
body[data-page="dashboard"] .group-report-detail { padding: 0; }
body[data-page="dashboard"] .group-report-detail ul { gap: 6px; }
body[data-page="dashboard"] .group-report-detail li { padding: 0; border: 0; border-radius: 0; background: transparent; }
body[data-page="dashboard"] .group-report-detail li + li { padding-top: 6px; border-top: 1px solid #e2e8f0; }
body[data-page="dashboard"] .question-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; margin: 0 0 2px; color: #64748b; font-size: 12px; line-height: 1.4; }
body[data-page="dashboard"] .question-meta strong,
body[data-page="dashboard"] .group-report-detail .question-meta strong { display: inline; margin: 0; color: #475569; font-size: 12px; line-height: 1.4; }
body[data-page="dashboard"] .similar-question-tag { padding: 0 5px; border: 1px solid #fdba74; border-radius: 4px; color: #9a3412; background: #fff7ed; font-size: 12px; font-weight: 700; }
body[data-page="dashboard"] .question-text,
body[data-page="dashboard"] .similar-group li > span { display: block; margin: 0; color: #20231f; font-size: var(--question-size); font-weight: 650; line-height: 1.36; letter-spacing: 0; overflow-wrap: anywhere; }
body[data-page="dashboard"] .category-question[data-category="content"] { border-color: #e0dcd3; }
body[data-page="dashboard"] .category-question[data-category="writing"] { border-color: #e0dcd3; }
body[data-page="dashboard"] .category-question[data-category="lesson"] { border-color: #e0dcd3; }
body[data-page="dashboard"] .category-question[data-category="other"] { border-color: #e0dcd3; }
body[data-page="dashboard"] .similar-groups { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin: 6px 0; }
body[data-page="dashboard"] .similar-group { padding: 8px; border-width: 1px; border-radius: 6px; }
body[data-page="dashboard"] .similar-group-head h3 { font-size: 16px; }
body[data-page="dashboard"] .similar-category { padding: 1px 6px; font-size: 12px; }
body[data-page="dashboard"] .similar-cluster-note { margin: 2px 0; font-size: 11px; }
body[data-page="dashboard"] .similar-group ul { gap: 5px; margin: 4px 0 0; }
body[data-page="dashboard"] .similar-group li { padding: 4px 6px; gap: 0; }
body[data-page="dashboard"] .dashboard-question-group { font-size: 12px; }
body[data-page="dashboard"] #view-dashboard:fullscreen { overflow: auto; height: 100%; background: #f7f5f0; }
@media (min-width: 1700px) {
  body[data-page="dashboard"] .dashboard-groups,
  body[data-page="dashboard"] .dashboard-bars { columns: 4; }
}
@media (max-width: 1100px) {
  body[data-page="dashboard"] .dashboard-groups,
  body[data-page="dashboard"] .dashboard-bars { columns: 2; }
  body[data-page="dashboard"] .similar-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  body[data-page="dashboard"] .kpi-card > small { display: none; }
}
@media (max-width: 700px) {
  body[data-page="dashboard"] .dashboard-heading { flex-wrap: wrap; }
  body[data-page="dashboard"] .dashboard-heading h1 { font-size: 18px; }
  body[data-page="dashboard"] .projection-tools { margin-left: auto; }
  body[data-page="dashboard"] .lesson-shell { width: calc(100% - 16px); }
  body[data-page="dashboard"] .dashboard-kpis { gap: 4px 14px; }
  body[data-page="dashboard"] #view-dashboard { --question-size: 26px; }
  body[data-page="dashboard"] .dashboard-groups,
  body[data-page="dashboard"] .dashboard-bars { columns: 1; }
  body[data-page="dashboard"] .similar-groups { grid-template-columns: minmax(0, 1fr); }
  body[data-page="dashboard"] .dashboard-panel-head { flex-wrap: wrap; }
  body[data-page="dashboard"] .similar-expand-note { display: none; }
}

/* Keep group labels quiet; the question is the visual headline. */
body[data-page="dashboard"] .dashboard-steps [aria-current="step"] { color: #943f30; font-weight: 750; }
body[data-page="dashboard"] .dashboard-panel h2 { font-size: 13px; font-weight: 600; color: #65675e; }
body[data-page="dashboard"] .group-report-detail .question-meta { display: none; }
body[data-page="dashboard"] .group-report-detail .question-meta:has(.similar-question-tag) { display: flex; }
body[data-page="dashboard"] .group-report-detail .question-meta strong { display: none; }
body[data-page="dashboard"] .category-question .question-meta { margin-bottom: 4px; }
body[data-page="dashboard"] .category-question .question-meta strong { padding: 1px 6px; border-radius: 4px; font-size: 12px; font-weight: 600; }
body[data-page="dashboard"] .category-question[data-category="content"] .question-meta strong { background: #f3e9dc; color: #865522; }
body[data-page="dashboard"] .category-question[data-category="writing"] .question-meta strong { background: #eee6e1; color: #914f3f; }
body[data-page="dashboard"] .category-question[data-category="lesson"] .question-meta strong { background: #e4eee7; color: #3d6c4f; }
body[data-page="dashboard"] .category-question[data-category="other"] .question-meta strong { background: #e7ecf2; color: #4b6280; }
body[data-page="dashboard"] .similar-group { background: #fffefa; border-color: #e0dcd3; }
body[data-page="dashboard"] .similar-category { color: #7f5740; background: #f0e9df; }
body[data-page="dashboard"] .similar-group li { background: #f7f5f0; border-radius: 6px; }
body[data-page="dashboard"] .live-status { background: transparent; border-color: transparent; color: #566e54; }
body[data-page="dashboard"] .live-status span { color: #566e54; font-weight: 500; }
body[data-page="dashboard"] .live-status.is-error,
body[data-page="dashboard"] .live-status.is-error span { color: #a53f32; }
body[data-page="dashboard"] .kpi-card > strong { font-weight: 650; }
body[data-page="dashboard"] .projection-tools .button,
body[data-page="dashboard"] #dashboard-confirm { font-weight: 600; }