:root {
  text-rendering: optimizeLegibility;
  --page: var(--md-surface);
  --surface: var(--md-surface-lowest);
  --surface-muted: var(--md-surface-container-low);
  --ink: var(--md-on-surface);
  --muted: var(--md-on-surface-variant);
  --line: var(--md-outline-variant);
  --line-strong: var(--md-outline);
  --accent: var(--md-primary);
  --accent-hover: var(--md-primary-hover);
  --accent-soft: var(--md-primary-container);
  --warning: #745000;
  --warning-soft: #fff5de;
  --danger: var(--bright-error);
  --danger-soft: #fff1ed;
  --success: #146147;
  --success-soft: #e7f5ee;
  --focus: var(--bright-focus);
  --radius: 16px;
  --control-radius: 8px;
  --content: 1160px;
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  background: #fff;
  scrollbar-gutter: stable;
  scrollbar-color: #a0a8b7 var(--page);
  scrollbar-width: thin;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

::selection { color: var(--md-on-primary-container); background: var(--md-primary-container); }
button, input, select, textarea { font: inherit; }
button, a, input, select, textarea { -webkit-tap-highlight-color: transparent; }
a { color: var(--accent); text-underline-offset: 3px; }
:where(.page) a:hover { color: var(--accent-hover); }
button { color: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.boot-state { color: var(--muted); }
.site-footer-inner { width: min(var(--content), 100%); margin-inline: auto; padding-inline: 28px; }

.page { width: min(var(--content), 100%); margin: 0 auto; padding: 36px 28px 72px; }
.page-narrow { max-width: 720px; }
.page-student { max-width: 960px; }
.page-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 26px; }
:where(.page) :is(h1, h2, h3, p) { margin-top: 0; }
:where(.page) h1 { margin-bottom: 8px; font-size: 32px; line-height: 1.2; letter-spacing: -.035em; }
:where(.page) h2 { margin-bottom: 12px; font-size: 20px; line-height: 1.3; letter-spacing: -.02em; }
:where(.page) h3 { margin-bottom: 8px; font-size: 16px; line-height: 1.35; }
.page-subtitle { max-width: 68ch; margin: 0; color: var(--muted); }
.heading-actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 9px; }
.section-title { margin-bottom: 16px; }
.section-copy { margin: -6px 0 16px; color: var(--muted); font-size: 14px; }

.panel { background: var(--surface); border-radius: var(--radius); box-shadow: var(--md-elevation-1); }
.panel-pad { padding: 24px; }
.panel + .panel { margin-top: 18px; }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.panel-heading h2, .panel-heading h3 { margin-bottom: 4px; }
.panel-heading p { margin: 0; color: var(--muted); font-size: 14px; }
.surface-muted { background: var(--surface-muted); }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px; }
.stack { display: grid; gap: 14px; }
.row { display: flex; align-items: center; gap: 10px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.nowrap { white-space: nowrap; }
.mono { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }
.divider { height: 1px; margin: 20px 0; background: var(--line); }

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: var(--control-radius);
  background: var(--accent);
  color: var(--md-on-primary);
  text-align: center;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.25;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}
.button:not(.button-quiet, :disabled) { box-shadow: var(--md-elevation-1); }
.button:not(.button-quiet, :disabled):is(:hover, :focus-visible):not(:active) { box-shadow: var(--md-elevation-2); }
.button:hover { background: var(--accent-hover); color: var(--md-on-primary); }
.button:disabled { background: var(--md-surface-container); border-color: var(--line); color: var(--muted); cursor: not-allowed; }
.button-secondary { background: var(--surface); border-color: var(--line-strong); color: var(--ink); }
.button-secondary:hover { background: var(--surface-muted); border-color: var(--line-strong); color: var(--ink); }
.button-quiet { background: transparent; border-color: transparent; color: var(--accent); }
.button-quiet:hover { background: var(--accent-soft); color: var(--accent-hover); }
.button-danger { background: #a44639; color: #fff; }
.button-danger:hover { background: #853a30; color: #fff; }
.button-small { min-height: 40px; padding-inline: 12px; font-size: 13px; }
.button-block { width: 100%; }
.button-link { border: 0; background: transparent; color: var(--accent); padding: 4px; min-height: 40px; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; font-weight: 650; }
.button-link:hover { color: var(--accent-hover); }

.field { display: grid; gap: 6px; }
.field label, .field-label { color: var(--ink); font-size: 14px; font-weight: 650; }
.field-hint { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.45; }
.input, .select, .textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--control-radius);
  background: var(--surface);
  color: var(--ink);
  font-size: 16px;
}
.input::placeholder, .textarea::placeholder { color: var(--muted); opacity: 1; }
.textarea { min-height: 112px; resize: vertical; }
.input-code { letter-spacing: .12em; text-transform: uppercase; font-variant-numeric: tabular-nums; }
.input-pin { letter-spacing: .14em; font-variant-numeric: tabular-nums; }
.input-small { min-height: 42px; max-width: 118px; }
.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.field-grid-three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.field-grid .span-full { grid-column: 1 / -1; }
.fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.fieldset legend { margin-bottom: 8px; font-size: 14px; font-weight: 650; }
.choice-row { display: flex; flex-wrap: wrap; gap: 9px; }
.choice-chip { position: relative; }
.choice-chip input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.choice-chip span { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; padding: 0 14px; border: 1px solid var(--line-strong); border-radius: var(--control-radius); background: var(--surface); color: var(--ink); font-size: 14px; font-weight: 650; cursor: pointer; }
.choice-chip input:checked + span { border-color: var(--accent); background: var(--accent-soft); color: var(--md-on-primary-container); }
.choice-chip input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 2px; }

.notice { padding: 14px 16px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface-muted); color: var(--ink); font-size: 14px; }
.notice p:last-child { margin-bottom: 0; }
.notice-warning { border-color: #806236; background: var(--warning-soft); color: var(--warning); }
.notice-error { border-color: #74443c; background: var(--danger-soft); color: var(--danger); }
.notice-success { border-color: #3c6549; background: var(--success-soft); color: var(--success); }
.inline-message { min-height: 24px; margin: 2px 0 0; color: var(--muted); font-size: 14px; }
.inline-message.error { color: var(--danger); }
.inline-message.success { color: var(--success); }
.status-pill { min-height: 28px; display: inline-flex; align-items: center; gap: 7px; padding: 3px 10px; border-radius: 999px; background: var(--surface-muted); color: var(--muted); font-size: 12px; font-weight: 700; white-space: nowrap; }
.status-pill::before { width: 7px; height: 7px; flex: 0 0 auto; border-radius: 50%; background: currentColor; content: ""; }
.status-success { background: var(--success-soft); color: var(--success); }
.status-warning { background: var(--warning-soft); color: var(--warning); }
.status-danger { background: var(--danger-soft); color: var(--danger); }
.status-neutral { background: var(--surface-muted); color: var(--muted); }
.status-live { background: var(--accent-soft); color: var(--accent); }
.status-large { min-height: 34px; padding-inline: 12px; font-size: 13px; }

.join-layout { display: grid; grid-template-columns: minmax(0, 602px) minmax(0, 328px); gap: 28px; align-items: start; }
.join-layout-pin { grid-template-columns: minmax(0, 655px); }
.join-form .field label, .teacher-login .field label { font-size: 16px; font-weight: 700; }
.join-form .field-hint { font-size: 15px; }
.join-form .join-error { color: var(--danger); }
.join-form .stack { gap: 12px; }
.join-form .input-code { letter-spacing: .025em; }
.join-form .input-code::placeholder { text-transform: none; }
.join-form .code-preview { padding: 0; margin-bottom: 12px; background: transparent; }
.join-form .tracking-notice { box-shadow: none; }
.join-fullscreen { min-height: 44px; cursor: pointer; }
.join-class-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  min-height: 60px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--md-elevation-1);
  background: var(--surface);
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}
.join-class-link:hover { color: var(--accent); }
.join-class-link > .bright-icon:first-child { color: var(--accent); }
.join-back { margin-top: 14px; min-height: 48px; border-radius: 10px; }
.teacher-login, .bright-teacher-context { width: min(100%, 540px); }
.teacher-login .stack { margin-top: 16px; gap: 10px; }
.teacher-login.teacher-login-denied { border-color: #d08e87; background: var(--danger-soft); }
.bright-teacher-context { padding-bottom: 34px; }
.bright-teacher-context .bright-heading { font-weight: 700; }
.bright-teacher-context .teacher-context-links { padding: 8px; }
.teacher-context-links a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  min-height: 66px;
  padding: 8px 10px;
  border-radius: 9px;
  color: var(--ink);
  text-decoration: none;
}
.teacher-context-links a + a { border-top: 1px solid var(--line); }
.teacher-context-links a[aria-current], .teacher-context-links a:hover { background: var(--md-state-hover); }
.teacher-context-links a > .bright-icon:first-child { color: var(--accent); }
.teacher-context-links strong, .teacher-context-links small { display: block; }
.teacher-context-links strong { font-size: 18px; }
.teacher-context-links small { color: var(--muted); }
.bright-teacher-context > .button { margin-top: 14px; min-height: 48px; border-radius: 10px; }
.course-roster-layout { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: start; }
.course-roster-layout h2 { margin-bottom: 12px; }
.course-roster-layout form button { justify-self: start; }
.course-student { border-top: 1px solid var(--line); overflow-wrap: anywhere; }
.course-student summary { min-height: 48px; padding: 13px 0; cursor: pointer; }
.course-student summary span { margin-inline-start: 9px; font-size: .875rem; }
.course-student-actions { display: flex; flex-wrap: wrap; gap: 6px 10px; margin-block: 8px 14px; }
.course-pins, .course-completions { list-style: none; padding: 0; margin: 0; }
.course-pins li { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; padding: 7px 0; border-top: 1px solid var(--line); }
.course-pins strong { flex: 1 1 12ch; overflow-wrap: anywhere; }
.course-completions li { padding: 5px 0; }
.course-completions span { display: inline-block; min-width: 7ch; margin-inline-end: 8px; font-size: .875rem; }
.code-preview { margin-bottom: 16px; padding: 11px 13px; border-radius: 8px; background: var(--accent-soft); color: var(--accent); font-size: 14px; font-weight: 700; }
.tracking-notice { font-size: .875rem; }
.tracking-notice p { margin: .75rem 0 0; }

.empty-state { padding: 36px 24px; border: 1px dashed var(--line-strong); border-radius: 12px; text-align: center; }
.empty-state h2 { margin-bottom: 7px; }
.empty-state p { max-width: 52ch; margin: 0 auto 18px; color: var(--muted); }
.metric-strip { display: flex; flex-wrap: wrap; gap: 12px 24px; margin: 0 0 22px; color: var(--muted); font-size: 14px; }
.metric-strip strong { color: var(--ink); font-variant-numeric: tabular-nums; }
.table-wrap { width: 100%; overflow: hidden; border: 1px solid var(--line); border-radius: 11px; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th { padding: 11px 12px; background: var(--surface-muted); color: var(--muted); text-align: left; font-size: 12px; font-weight: 700; letter-spacing: .01em; }
.data-table td { padding: 13px 12px; border-top: 1px solid var(--line); vertical-align: middle; }
.data-table tr:first-child td { border-top: 0; }
.data-table tbody tr:hover { background: var(--md-surface-container); }
.table-primary { color: var(--ink); font-weight: 700; }
.table-secondary { margin-top: 2px; color: var(--muted); font-size: 12px; }
.table-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.student-row { align-items: flex-start; }
.student-name { font-weight: 700; }
.progress-track { width: 112px; height: 7px; overflow: hidden; border-radius: 20px; background: var(--md-surface-container-high); }
.progress-fill { height: 100%; border-radius: inherit; background: var(--accent); }
.grade-field { display: flex; align-items: center; gap: 7px; }
.grade-field .input { width: 76px; min-height: 40px; padding: 7px 9px; }
.results-wrap { overflow: visible; }
.results-table { table-layout: fixed; overflow-wrap: anywhere; }
.results-table th:first-child { width: 22%; border-start-start-radius: 10px; }
.results-table th:nth-child(2) { width: 17%; }
.results-table th:nth-child(3) { width: 29%; }
.results-table th:nth-child(4) { width: 13%; }
.results-table th:last-child { border-start-end-radius: 10px; }
.results-table td { vertical-align: top; }
.results-table .status-pill { white-space: normal; }
.results-table .progress-track { width: min(112px, 100%); }
.results-table .progress-fill { display: block; }
.results-table .grade-field { flex-wrap: wrap; }
.results-table .grade-field .input { width: 64px; max-width: 100%; }
.results-table .button { min-width: 0; max-width: 100%; white-space: normal; overflow-wrap: anywhere; }
.result-pin { display: grid; justify-items: start; gap: 5px; }
.signal-counts { display: flex; flex-wrap: wrap; gap: 3px 12px; padding: 0; margin: 2px 0; color: var(--muted); list-style: none; font-size: 13px; }
.signal-counts .signal-observed { color: var(--warning); }
.results-help { margin-top: 0; }
.pin-code { font-size: 14px; font-weight: 700; line-height: 1.2; letter-spacing: .08em; font-variant-numeric: tabular-nums; }
.events-list { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.event-row { display: grid; grid-template-columns: minmax(150px, .7fr) minmax(0, 1.3fr) auto; align-items: start; gap: 14px; padding: 12px 0; border-top: 1px solid var(--line); font-size: 13px; }
.event-row:first-child { border-top: 0; }
.event-name { font-weight: 700; }
.event-copy { color: var(--muted); }
.event-time { color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.test-meta { display: flex; flex-wrap: wrap; gap: 10px 22px; color: var(--muted); font-size: 14px; }
.test-meta strong { color: var(--ink); }
.share-box { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 8px; }
.share-url { min-height: 44px; overflow: hidden; display: flex; align-items: center; padding: 8px 12px; border: 1px solid var(--line); border-radius: var(--control-radius); background: var(--surface-muted); color: var(--ink); font-size: 14px; text-overflow: ellipsis; white-space: nowrap; }
.pin-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.pin-item { min-height: 42px; display: inline-flex; align-items: center; gap: 10px; padding: 4px 8px 4px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.pin-item-name { max-width: 20ch; overflow: hidden; color: var(--muted); font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }

.editor-grid { display: grid; grid-template-columns: minmax(0, 1.16fr) minmax(300px, .84fr); align-items: start; gap: 18px; }
.editor-main { display: grid; gap: 18px; }
.editor-side { display: grid; gap: 18px; }
.task-list { display: grid; gap: 10px; counter-reset: task; }
.task-item { display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; align-items: start; gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); counter-increment: task; }
.task-number { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 8px; background: var(--surface-muted); color: var(--muted); font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; }
.task-main { min-width: 0; }
.task-title { margin: 0 0 5px; font-size: 14px; font-weight: 700; }
.task-detail { margin: 0; color: var(--muted); font-size: 13px; }
.task-controls { display: flex; align-items: center; gap: 8px; }
.task-controls .input { width: 76px; min-height: 40px; padding: 7px 9px; }
.task-type { display: inline-flex; min-height: 23px; align-items: center; margin-bottom: 5px; padding: 2px 7px; border-radius: 5px; background: var(--surface-muted); color: var(--muted); font-size: 11px; font-weight: 700; }
.bank-list { display: grid; gap: 0; max-height: 540px; overflow: auto; border-top: 1px solid var(--line); scrollbar-color: var(--line-strong) var(--surface); scrollbar-width: thin; }
.bank-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.bank-item:last-child { border-bottom: 0; }
.bank-item p { margin: 0; }
.bank-item-title { margin-bottom: 3px !important; font-size: 14px; font-weight: 700; }
.bank-item-copy { color: var(--muted); font-size: 12px; }
.template-list { display: grid; gap: 8px; }
.template-add { width: 100%; min-height: 44px; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 11px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); text-align: left; cursor: pointer; }
.template-add:hover { border-color: var(--accent); background: var(--accent-soft); }
.template-add strong { font-size: 13px; }
.template-add span { color: var(--muted); font-size: 12px; }
.editor-footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-top: 22px; }
.editor-footer-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.math-display { margin: 8px 0 0; overflow-x: auto; overflow-y: hidden; padding: 6px 2px; color: var(--ink); }
.math-display .katex-display { margin: 0; text-align: left; }
.math-inline { display: inline-block; max-width: 100%; overflow-x: auto; vertical-align: middle; }
.math-fallback { font-family: Kalam, Roboto, sans-serif; font-size: 14px; white-space: pre-wrap; }

.student-topline { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 18px; }
.student-title-block h1 { margin-bottom: 4px; font-size: 25px; }
.student-title-block p { margin: 0; color: var(--muted); font-size: 14px; }
.timer { min-width: 112px; text-align: right; }
.timer-label { color: var(--muted); font-size: 12px; font-weight: 650; }
.timer-value { display: block; font-size: 24px; line-height: 1.2; font-weight: 750; font-variant-numeric: tabular-nums; letter-spacing: .015em; }
.timer.warning .timer-value { color: var(--warning); }
.timer.urgent .timer-value { color: var(--danger); }
.save-status { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
.save-status::before { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); content: ""; }
.save-status.saved { color: var(--success); }
.save-status.saved::before { background: var(--success); }
.save-status.saving::before { background: var(--warning); }
.save-status.offline { color: var(--warning); }
.save-status.offline::before { background: var(--warning); }
.save-status.error { color: var(--danger); }
.save-status.error::before { background: var(--danger); }
.student-progress { margin-bottom: 20px; }
.progress-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 8px; color: var(--muted); font-size: 13px; }
.progress-bar { height: 8px; overflow: hidden; border-radius: 99px; background: var(--md-surface-container-high); }
.progress-bar > span { height: 100%; display: block; border-radius: inherit; background: var(--accent); }
.student-content { display: grid; grid-template-columns: minmax(0, 1fr) 212px; align-items: start; gap: 18px; }
.question-panel { min-height: 340px; padding: 24px; }
.question-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.question-number { color: var(--muted); font-size: 14px; font-weight: 700; font-variant-numeric: tabular-nums; }
.question-points { color: var(--muted); font-size: 13px; }
.question-prompt { max-width: 68ch; margin: 0 0 16px; font-size: 18px; line-height: 1.55; }
.answer-area { max-width: 540px; margin-top: 24px; }
.answer-input { min-height: 52px; font-size: 18px; }
.answer-choice-list { display: grid; gap: 9px; margin: 18px 0 0; padding: 0; border: 0; }
.answer-choice { position: relative; display: flex; align-items: flex-start; gap: 12px; min-height: 52px; padding: 12px 14px; border: 1px solid var(--line-strong); border-radius: 9px; background: var(--surface); cursor: pointer; }
.answer-choice:hover { border-color: var(--accent); }
.answer-choice:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.answer-choice input { width: 20px; height: 20px; flex: 0 0 auto; margin: 2px 0 0; accent-color: var(--accent); }
.answer-choice:focus-within { outline: 3px solid var(--focus); outline-offset: 2px; }
.question-list { display: grid; gap: 8px; padding: 16px; }
.question-list h2 { margin: 0 0 2px; font-size: 14px; }
.question-jump-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 7px; }
.question-jump { min-width: 40px; min-height: 40px; border: 1px solid var(--line-strong); border-radius: 8px; background: var(--surface); color: var(--ink); font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; cursor: pointer; }
.question-jump[aria-current="step"] { border-color: var(--accent); background: var(--accent); color: var(--md-on-primary); }
.question-jump.is-answered:not([aria-current="step"]) { border-color: #496b50; background: var(--success-soft); color: var(--success); }
.question-nav { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 18px; }
.question-nav .button { min-width: 120px; }
.student-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 18px; }
.student-footer-copy { color: var(--muted); font-size: 13px; }
.offline-banner { margin: 0 0 16px; }
.finish-panel { max-width: 680px; margin: 58px auto 0; padding: 30px; }
.finish-panel h1 { font-size: 28px; }
.finished-mark { display: inline-flex; margin-bottom: 16px; padding: 7px 11px; border-radius: 999px; background: var(--success-soft); color: var(--success); font-size: 13px; font-weight: 700; }
.event-note { margin-top: 16px; }

.footer-note { margin-top: 22px; color: var(--muted); font-size: 13px; }
.toast { position: fixed; z-index: 10; right: 20px; bottom: max(20px, env(safe-area-inset-bottom)); max-width: min(420px, calc(100vw - 40px)); padding: 12px 16px; border: 1px solid var(--line-strong); border-radius: 10px; background: var(--surface); color: var(--ink); font-size: 14px; opacity: 0; transform: translateY(8px); pointer-events: none; transition: opacity 160ms ease, transform 160ms ease; }
.toast.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 820px) {
  .page { padding-top: 28px; }
  .editor-grid { grid-template-columns: minmax(0, 1fr); }
  .editor-side { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
}

@media (max-width: 760px) {
  .join-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .bright-teacher-context { padding-bottom: 39px; }
}

@media (max-width: 680px) {
  .site-footer-inner { padding-inline: 16px; }
  .page-heading { display: grid; gap: 14px; margin-bottom: 20px; }
  :where(.page) h1 { font-size: 28px; }
  .heading-actions { justify-content: flex-start; }
  .panel-pad { padding: 18px; }
  .split, .field-grid, .field-grid-three { grid-template-columns: minmax(0, 1fr); }
  .field-grid .span-full { grid-column: auto; }
  .editor-side { grid-template-columns: minmax(0, 1fr); }
  .editor-footer { align-items: stretch; }
  .editor-footer-actions { width: 100%; }
  .editor-footer-actions .button { flex: 1 1 160px; }
  .task-item { grid-template-columns: 30px minmax(0, 1fr); gap: 10px; padding: 12px; }
  .task-controls { grid-column: 2; justify-content: flex-end; }
  .task-controls .input { max-width: 100px; }
  .student-topline { align-items: flex-start; }
  .student-title-block h1 { font-size: 22px; }
  .timer { min-width: 94px; }
  .timer-value { font-size: 22px; }
  .student-content { grid-template-columns: minmax(0, 1fr); }
  .question-panel { min-height: 0; padding: 18px; }
  .question-list { order: 2; padding: 14px; }
  .question-list h2 { margin-bottom: 4px; }
  .question-jump-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .question-nav { position: sticky; z-index: 3; bottom: 0; margin: 16px -18px -18px; padding: 10px 16px max(10px, env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: var(--md-surface-lowest); }
  .question-nav .button { min-width: 0; flex: 1; }
  .student-footer { align-items: stretch; flex-direction: column; }
  .student-footer .button { width: 100%; }
  .event-row { grid-template-columns: minmax(0, 1fr) auto; gap: 4px 12px; }
  .event-copy { grid-column: 1 / -1; grid-row: 2; }
  .event-time { grid-column: 2; grid-row: 1; }
  .share-box { grid-template-columns: minmax(0, 1fr); }
  .share-box .button { width: 100%; }
  .table-wrap { overflow: visible; border: 0; border-radius: 0; }
  .data-table, .data-table tbody { display: block; width: 100%; }
  .data-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
  .data-table tbody { display: grid; gap: 10px; }
  .data-table tr { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
  .data-table td { min-width: 0; display: grid; gap: 3px; align-content: start; padding: 11px 12px; border-top: 1px solid var(--line); font-size: 13px; }
  .data-table td:first-child { grid-column: 1 / -1; border-top: 0; }
  .data-table td::before { color: var(--muted); content: attr(data-label); font-size: 11px; font-weight: 700; }
  .data-table td[data-label="Дії"] { grid-column: 1 / -1; }
  .results-table .result-signals { grid-column: 1 / -1; }
  .data-table .table-actions { justify-content: flex-start; }
  .progress-track { width: 100%; max-width: 180px; }
  .grade-field { flex-wrap: wrap; }
  .pin-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); }
  .pin-item { min-width: 0; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0 8px; }
  .pin-item-name { grid-column: 1 / -1; max-width: none; }
  .finish-panel { margin-top: 32px; padding: 22px; }
  .metric-strip { gap: 10px 18px; }
}

@media (max-width: 380px) {
  .button { padding-inline: 12px; }
  .page-heading .button { min-height: 42px; }
  .question-jump-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .timer { min-width: 82px; }
  .timer-value { font-size: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}