:root {
  --color-bg: #f6f8fa;
  --color-surface: #ffffff;
  --color-border: #e5e7eb;
  --color-heading: #302574;
  --color-text: #12263f;
  --color-text-muted: #616161;
  --color-accent: #0fb0f8;
  --color-accent-dark: #0d93cc;
  --color-accent-tint: #e6f7fe;
  --color-tab-active: #16d8a7;
  --color-warn-bg: #fffde7;
  --color-warn-text: #fdd835;
  --color-ok-bg: #ddf3e3;
  --color-ok-text: #1e9e58;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-btn: 16px;

  --content-max-width: 1440px;

  --font-heading: "Montserrat", sans-serif;
  --font-body: "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-nav: "Nunito Sans", sans-serif;

  /* the onlinequizv2 student-facing module renders in Poppins, unlike the rest of the app */
  --font-quiz: "Poppins", sans-serif;
  --color-quiz-track: #edf2f9;
  --color-quiz-fill: #53caff;
  --color-quiz-header: #fec53c;
}

[hidden] {
  display: none !important;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
}

button {
  font-family: inherit;
}

/* ---------- top bar ---------- */
.topbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.topbar-inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  padding: 14px 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.logo-mark {
  display: flex;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  color: #1f2430;
}

.topnav {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
}

.topnav-link {
  font-family: var(--font-nav);
  font-size: 14.5px;
  font-weight: 700;
  color: var(--color-text-muted);
  text-decoration: none;
  cursor: pointer;
  padding: 4px 0;
}

.topnav-link.active {
  color: var(--color-accent);
  font-weight: 600;
  border-bottom: 2px solid var(--color-accent);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.icon-chip {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #e8f5e0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

/* ---------- sub tabs ---------- */
.subtabs {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.subtabs-inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  display: flex;
  gap: 28px;
  padding: 0 32px;
}

.subtab {
  border: none;
  background: transparent;
  padding: 14px 2px;
  font-size: 14.5px;
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.subtab.active {
  color: var(--color-accent);
  font-weight: 700;
  border-bottom: 4px solid var(--color-tab-active);
}

/* ---------- page content ---------- */
.page-content {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 28px 32px 60px;
}

.page {
  display: none;
}

.page.active {
  display: block;
}

.page-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.page-title {
  font-family: var(--font-heading);
  font-size: 34px;
  font-weight: 700;
  color: var(--color-heading);
  margin: 0;
}

.page-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-input {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 240px;
}

.search-input input {
  border: none;
  outline: none;
  font-size: 13.5px;
  width: 100%;
  color: var(--color-text);
  background: transparent;
}

.search-input input::placeholder {
  color: #9ca3af;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-btn);
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.btn-outline {
  background: var(--color-surface);
  border: 1.5px solid var(--color-accent);
  color: var(--color-accent);
}

.btn-outline:hover {
  background: var(--color-accent-tint);
}

.btn-solid {
  background: var(--color-accent);
  border: none;
  color: #fff;
}

.btn-solid:hover {
  background: var(--color-accent-dark);
}

.btn-solid:disabled {
  background: #cbd5e1;
  cursor: not-allowed;
}

.kebab-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kebab-btn:hover {
  background: var(--color-accent-tint);
}

/* ---------- generate dropdown ---------- */
.dropdown-wrap {
  position: relative;
}

.dropdown-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: 190px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 28px rgba(17, 24, 39, 0.12);
  padding: 6px;
  z-index: 30;
}

.dropdown-menu.open {
  display: block;
}

.dropdown-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  color: var(--color-text);
  cursor: pointer;
}

.dropdown-item:hover {
  background: var(--color-accent-tint);
  color: var(--color-accent-dark);
}

/* ---------- filter row ---------- */
.filter-row {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-text-muted);
  cursor: pointer;
}

.filter-chip:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

/* ---------- worksheet table ---------- */
.worksheet-table {
  background: transparent;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.table-row {
  display: grid;
  grid-template-columns: 2.2fr 1.4fr 1fr 1.3fr 1.8fr;
  align-items: center;
  padding: 16px 20px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.table-row--head {
  background: transparent;
  border: none;
  padding: 4px 20px;
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 15px;
  color: var(--color-text);
}

.col-worksheet {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: var(--color-heading);
  font-size: 14px;
  cursor: pointer;
}

.col-worksheet:hover .worksheet-name {
  text-decoration: underline;
}

.worksheet-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #fdeecb;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.col-category {
  font-size: 13.5px;
  color: var(--color-text-muted);
}

.status-pill {
  display: inline-block;
  padding: 12px 10px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
}

.status-pill--warn {
  background: var(--color-warn-bg);
  color: var(--color-warn-text);
}

.status-pill--ok {
  background: var(--color-ok-bg);
  color: var(--color-ok-text);
}

.col-created {
  font-size: 13px;
  color: var(--color-text-muted);
}

.col-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-end;
}

.action-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--color-accent);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.action-icon:hover {
  background: var(--color-accent-dark);
}

.kebab-btn--row {
  margin-left: 2px;
}

/* ---------- modal ---------- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(17, 24, 39, 0.5);
  align-items: center;
  justify-content: center;
  z-index: 220;
  padding: 20px;
}

.modal-overlay.open {
  display: flex;
}

.modal-card {
  width: 100%;
  max-width: 560px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-card--wide {
  max-width: 800px;
}

.modal-card--center {
  max-width: 460px;
  text-align: center;
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px 18px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.modal-head--center {
  justify-content: center;
  position: relative;
}

.modal-head--center .modal-close {
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
}

.modal-head h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-heading);
}

.modal-subtitle {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--color-text-muted);
}

.modal-close {
  border: none;
  background: transparent;
  cursor: pointer;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.modal-close:hover {
  background: #f3f4f6;
}

.modal-body {
  padding: 22px 28px 6px;
  overflow-y: auto;
  flex: 1;
}

.modal-body--center {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.file-picker-row {
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.btn-file {
  border-radius: 0;
  border: none;
  border-right: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-heading);
  padding: 12px 18px;
}

.btn-file:hover {
  background: #f9fafb;
}

.file-picker-count {
  flex: 1;
  padding: 12px 16px;
  font-size: 13.5px;
  color: #9ca3af;
  background: #fafafa;
}

.hint-text-left {
  margin: 8px 2px 16px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.file-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.file-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 16px;
  background: #f7f7f8;
  border-radius: var(--radius-sm);
}

.file-name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-heading);
}

.file-size {
  font-size: 12.5px;
  color: var(--color-text-muted);
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 2px 20px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 18px;
}

.toggle-label {
  font-size: 14px;
  color: var(--color-text);
}

.toggle-switch {
  position: relative;
  width: 42px;
  height: 24px;
  border-radius: 20px;
  border: none;
  background: #d1d5db;
  cursor: pointer;
  flex-shrink: 0;
}

.toggle-switch.active {
  background: var(--color-accent);
}

.toggle-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  transition: left 0.15s;
}

.toggle-switch.active .toggle-knob {
  left: 21px;
}

.modal-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px 26px;
  flex-shrink: 0;
}

.modal-foot--center {
  justify-content: center;
  gap: 12px;
}

.how-it-works-wrap {
  position: relative;
}

.how-it-works-popover {
  display: none;
  position: absolute;
  bottom: calc(100% + 10px);
  left: 0;
  width: 260px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 28px rgba(17, 24, 39, 0.14);
  padding: 14px 16px;
  z-index: 20;
}

.how-it-works-popover.open {
  display: block;
}

.popover-title {
  margin: 0 0 8px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--color-heading);
}

.how-it-works-popover ul {
  margin: 0;
  padding-left: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.how-it-works-popover li {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.link-text {
  font-size: 13.5px;
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
}

.link-text:hover {
  text-decoration: underline;
}

.modal-foot-actions {
  display: flex;
  gap: 12px;
}

/* ---------- loading spinner ---------- */
.loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
}

.spinner {
  width: 56px;
  height: 56px;
  border: 5px solid var(--color-accent-tint);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---------- check student matches table ---------- */
.match-table {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.match-row {
  display: grid;
  grid-template-columns: 1.4fr 1.2fr 1fr 1fr 1fr;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
}

.match-row--head {
  font-family: var(--font-heading);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--color-heading);
  padding: 8px 14px;
}

.match-row--body {
  background: #fafafa;
  border-radius: var(--radius-sm);
}

.match-file {
  font-size: 13px;
  color: var(--color-text);
}

.match-student {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--color-heading);
}

.match-muted {
  color: var(--color-text-muted);
  font-weight: 400;
}

.match-status {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 700;
  width: fit-content;
}

.match-status--good {
  background: var(--color-ok-bg);
  color: var(--color-ok-text);
}

.match-status--review {
  background: var(--color-warn-bg);
  color: #b8860f;
}

.match-action-btn {
  padding: 7px 16px;
  border-radius: var(--radius-btn);
  font-family: var(--font-heading);
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  width: fit-content;
}

.match-action-btn--preview {
  background: var(--color-surface);
  border: 1.5px solid var(--color-accent);
  color: var(--color-accent);
}

.match-action-btn--preview:hover {
  background: var(--color-accent-tint);
}

.match-action-btn--resolve {
  background: #f5a623;
  border: none;
  color: #fff;
}

.match-action-btn--resolve:hover {
  background: #d98f16;
}

/* ---------- review submission match (scan preview) ---------- */
.scan-stage {
  background: #e5e7eb;
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 20px;
}

.scan-page {
  background: var(--color-surface);
  padding: 24px 28px;
  border-radius: 4px;
}

.scan-page-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 14px;
  border-bottom: 1.5px solid #111827;
  margin-bottom: 22px;
}

.scan-worksheet-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-heading);
  letter-spacing: 0.02em;
}

.scan-student-meta {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.6;
  text-align: right;
}

.scan-question {
  display: flex;
  gap: 10px;
  margin-bottom: 22px;
}

.scan-qnum {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text);
  flex-shrink: 0;
}

.scan-qbody {
  flex: 1;
}

.scan-qbody p {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--color-text);
}

.scan-line {
  height: 1px;
  background: #d1d5db;
  margin-bottom: 18px;
}

.matched-student-label {
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.matched-student-row {
  display: flex;
  gap: 8px;
  font-size: 13.5px;
  color: var(--color-text);
  margin-bottom: 6px;
}

.matched-student-row strong {
  color: var(--color-heading);
}

/* ---------- resolve student modal ---------- */
.resolve-desc {
  margin: 18px 28px 0;
  font-size: 13.5px;
  color: var(--color-text);
  line-height: 1.6;
}

.select-label {
  display: block;
  text-align: left;
  width: 100%;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 8px;
}

.select-input {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  color: var(--color-text);
  background: var(--color-surface);
}

.resolve-hint {
  margin: 8px 2px 0;
  font-size: 11.5px;
  color: var(--color-text-muted);
  text-align: left;
}

/* ---------- processing submission ---------- */
.processing-spinner-wrap {
  display: flex;
  justify-content: center;
  padding: 20px 0 28px;
}

.processing-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.processing-step {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: #fafafa;
  border-radius: var(--radius-sm);
}

.processing-step-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
}

.processing-step-icon--complete {
  background: #00d964;
}

.processing-step-icon--active {
  background: var(--color-accent);
}

.processing-step-icon--waiting {
  background: #c3cad3;
}

.processing-step-label {
  flex: 1;
  font-size: 14px;
  color: var(--color-text);
}

.processing-step-status {
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 700;
}

.processing-step-status--complete {
  background: var(--color-ok-bg);
  color: var(--color-ok-text);
}

.processing-step-status--active {
  background: var(--color-warn-bg);
  color: #b8860f;
}

.processing-step-status--waiting {
  background: #eef0f2;
  color: #7c8591;
}

.processing-banner {
  padding: 16px 28px;
  background: var(--color-accent-tint);
  color: var(--color-accent-dark);
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  flex-shrink: 0;
}

/* ---------- minimized processing toast ---------- */
.processing-toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 320px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 40px rgba(17, 24, 39, 0.25);
  overflow: hidden;
  z-index: 150;
}

.processing-toast-head {
  padding: 12px 18px;
  background: var(--color-heading);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
}

.processing-toast-body {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  font-size: 13px;
  color: var(--color-text);
}

.toast-spinner {
  width: 16px;
  height: 16px;
  border: 3px solid var(--color-accent-tint);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

.processing-toast-view {
  margin-left: auto;
  padding: 6px 16px;
  font-size: 12.5px;
}

/* ---------- review result table (6 columns incl. score) ---------- */
.match-row--result {
  grid-template-columns: 1.2fr 1fr 0.9fr 0.7fr 1fr 1fr;
}

/* ---------- worksheet reviewer (full page) ---------- */
.worksheet-review-screen {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
}

.wr-header {
  position: relative;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 32px;
  background-image: repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.07) 0 2px, transparent 2px 16px), linear-gradient(135deg, #ffc247, #ff9f1c 65%, #ff8f00);
}

.wr-header-title {
  color: #fff;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
}

/* onlinequizv2 renders a flat yellow header with the Smartjen tile pattern, not the teacher-side orange gradient */
#screen-quiz .wr-header,
#screen-quiz-result .wr-header {
  background-image: url("https://elb-onlinequiz.smartjen.com/images/bg-smartjen.png");
  background-color: var(--color-quiz-header);
  background-repeat: repeat;
}

#screen-quiz .wr-header-title,
#screen-quiz-result .wr-header-title {
  font-family: var(--font-quiz);
  color: #fff;
}

#screen-quiz .wr-dots,
#screen-quiz-result .wr-dots {
  background: var(--color-surface);
  box-shadow: 0 12px 24px rgba(18, 38, 63, 0.03);
  padding: 24px 12px;
  align-self: stretch;
}

#screen-quiz .wr-dot-connector,
#screen-quiz-result .wr-dot-connector {
  min-height: 24px;
}

.qr-exit-link {
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  color: #fff;
  font-family: var(--font-quiz);
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
}

.qr-exit-link:hover {
  text-decoration: underline;
}

/* onlinequizv2 marks correct/incorrect with brighter saturated colors than the teacher reviewer */
#qr-dots .wr-dot--correct {
  background: #00e676;
}

#qr-dots .wr-dot--incorrect {
  background: #ff1744;
}

.wr-exit-btn {
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  background: rgba(255, 255, 255, 0.2);
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  border-radius: 20px;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.wr-exit-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.wr-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 32px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.wr-status-bar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.wr-student-switcher {
  display: flex;
  align-items: center;
  gap: 10px;
}

.wr-switch-btn {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-heading);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.wr-switch-btn:hover:not(:disabled) {
  background: var(--color-accent-tint);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.wr-switch-btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.wr-switch-label {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--color-heading);
  min-width: 150px;
}

.wr-status-pill {
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 12.5px;
  font-weight: 700;
  border: 1.5px solid;
}

.wr-status-pill--pending {
  background: var(--color-warn-bg);
  color: #b8860f;
  border-color: #f0c56b;
}

.wr-status-pill--marked {
  background: var(--color-ok-bg);
  color: var(--color-ok-text);
  border-color: var(--color-ok-text);
}

.wr-score-pill {
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}

.wr-approve-btn {
  padding: 9px 20px;
  border-radius: var(--radius-btn);
  border: none;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 13.5px;
  font-weight: 700;
  cursor: pointer;
}

.wr-approve-btn:hover {
  background: var(--color-accent-dark);
}

.wr-approve-btn--done {
  background: var(--color-ok-text);
  cursor: default;
}

.wr-approve-btn--done:hover {
  background: var(--color-ok-text);
}

.wr-body {
  flex: 1;
  display: flex;
  min-height: 0;
  gap: 20px;
  padding: 24px 32px;
  overflow-y: auto;
}

.wr-dots {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  padding-top: 4px;
}

.wr-dot {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  flex-shrink: 0;
  transition: box-shadow 0.15s, transform 0.15s;
}

.wr-dot--correct {
  background: var(--color-ok-text);
}

.wr-dot--incorrect {
  background: #e24b4a;
}

.wr-dot--neutral {
  background: var(--color-heading);
}

/* quiz-taking dot nav: matches onlinequizv2 step circles */
.qz-dot {
  width: 37px;
  height: 37px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-family: var(--font-quiz);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}

.qz-dot--answered {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.qz-dot.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
  font-weight: 700;
}

.wr-dot.active {
  transform: scale(1.08);
  box-shadow: 0 0 0 3px var(--color-bg), 0 0 0 5px var(--color-heading);
}

.wr-dot-connector {
  width: 2px;
  min-height: 18px;
  flex: 1;
  background: var(--color-border);
}

.wr-scan-wrap {
  flex: 1;
  min-width: 0;
  background: #e5e7eb;
  border-radius: var(--radius-md);
  padding: 24px;
}

.wr-scan-page {
  background: var(--color-surface);
  padding: 24px 28px;
  border-radius: 4px;
  max-width: 640px;
  margin: 0 auto;
}

.wr-question {
  margin-bottom: 26px;
}

.wr-question-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.wr-answer-box {
  position: relative;
  display: inline-block;
  min-width: 55%;
  padding: 12px 18px;
  border: 2px solid;
  border-radius: 10px;
  cursor: pointer;
}

.wr-answer-box--correct {
  border-color: var(--color-ok-text);
  background: var(--color-ok-bg);
}

.wr-answer-box--incorrect {
  border-color: #e24b4a;
  background: #fdeceb;
}

.wr-answer-box.active {
  box-shadow: 0 0 0 3px rgba(48, 37, 116, 0.15);
}

.wr-handwriting {
  font-family: "Segoe Script", "Bradley Hand", cursive;
  font-size: 18px;
  color: #2c3a6b;
  line-height: 1.5;
  white-space: pre-line;
}

.wr-detail-panel {
  width: 320px;
  flex-shrink: 0;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: 0 1px 3px rgba(17, 24, 39, 0.08);
  padding: 20px;
  height: fit-content;
}

.wr-detail-qtab {
  display: inline-block;
  padding: 6px 16px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: -1px;
}

.wr-detail-label {
  margin: 16px 0 6px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.wr-detail-value {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-heading);
}

.wr-detail-remarks {
  margin: 0;
  font-size: 13px;
  color: var(--color-text);
  line-height: 1.55;
}

.wr-detail-pill {
  display: inline-block;
  margin-top: 12px;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 700;
}

.wr-detail-pill--correct {
  background: var(--color-ok-bg);
  color: var(--color-ok-text);
}

.wr-detail-pill--incorrect {
  background: #fdeceb;
  color: #e24b4a;
}

.wr-marks-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.wr-marks-select {
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-heading);
}

/* ---------- upload result complete (final) ---------- */
.upload-complete-body {
  padding: 34px 30px;
  text-align: center;
}

.success-badge {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #00d964;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
}

.upload-complete-title {
  margin: 0 0 4px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-heading);
}

.upload-complete-subtitle {
  margin: 0 0 20px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.upload-complete-table {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 22px;
  text-align: left;
}

.upload-complete-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.upload-complete-row:last-child {
  border-bottom: none;
}

.upload-complete-row--head {
  background: #fafafa;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-heading);
}

.upload-complete-row span:first-child {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--color-heading);
}

.upload-complete-row span:last-child {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--color-heading);
}

.upload-complete-close {
  padding: 11px 40px;
}

/* ---------- top-right toast notifications ---------- */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 320px;
  padding: 14px 16px;
  background: var(--color-surface);
  border-left: 4px solid var(--color-ok-text);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: 0 16px 40px rgba(17, 24, 39, 0.2);
  opacity: 0;
  transform: translateX(16px);
  transition: opacity 0.2s, transform 0.2s;
}

.toast.visible {
  opacity: 1;
  transform: translateX(0);
}

.toast-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #00d964;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 700;
}

.toast-copy {
  flex: 1;
}

.toast-title {
  margin: 0 0 2px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--color-heading);
}

.toast-message {
  margin: 0;
  font-size: 12.5px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ---------- worksheet details modal ---------- */
.modal-card--wsd {
  max-width: 920px;
}

.wsd-info-row {
  display: flex;
  align-items: center;
  gap: 22px;
  padding-bottom: 18px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.wsd-info-left {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
}

.wsd-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: #fdeecb;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.wsd-category {
  margin: 0 0 2px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--color-tab-active);
}

.wsd-title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-heading);
}

.wsd-info-stat {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.wsd-info-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.wsd-info-value {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-heading);
}

.wsd-filter-row {
  margin-bottom: 18px;
}

.wsd-search {
  width: 220px;
}

.wsd-row {
  display: grid;
  grid-template-columns: 0.4fr 1.4fr 1fr 0.9fr 0.7fr 1fr 1.3fr 1fr;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
}

.wsd-row--head {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-heading);
  padding: 8px 14px;
}

.wsd-row--body {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.wsd-student {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-heading);
}

.wsd-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-ok-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}

.wsd-cell {
  font-size: 13px;
  color: var(--color-text);
}

.status-pill--neutral {
  background: #eef0f2;
  color: #7c8591;
}

.wsd-more-btn {
  padding: 7px 14px;
  border-radius: var(--radius-btn);
  border: 1.5px solid var(--color-accent);
  background: var(--color-surface);
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
  width: fit-content;
}

.wsd-more-btn:hover {
  background: var(--color-accent-tint);
}

.wsd-expand {
  display: grid;
  grid-template-columns: 0.9fr 0.7fr 1fr 1.3fr 1fr;
  gap: 8px;
  padding: 12px 14px;
  margin-left: 220px;
  background: #fafafa;
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  margin-top: -9px;
}

.wsd-expand-head {
  font-size: 11px;
  font-weight: 800;
  color: var(--color-heading);
}

.wsd-expand-value {
  font-size: 13px;
  color: var(--color-text);
}

.wsd-view-attempt {
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
  text-align: left;
}

.wsd-view-attempt:hover {
  text-decoration: underline;
}

.wsd-no-attempt-note {
  font-size: 12.5px;
  color: var(--color-text-muted);
  font-style: italic;
}

.wsd-record-count {
  margin: 14px 2px 4px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--color-heading);
}

/* =========================================================
   FLOW 3 — Student quiz-taking + paper-answer capture + marking
   ========================================================= */

/* ---------- quiz header actions ---------- */
.qz-header-actions {
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
}

.qz-header-btn {
  padding: 9px 18px;
  border-radius: 20px;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.qz-header-btn--outline,
.qz-header-btn--solid {
  font-family: var(--font-quiz);
  background: var(--color-accent);
  border: 1px solid var(--color-accent);
  color: #fff;
}

.qz-header-btn--outline:hover,
.qz-header-btn--solid:hover {
  background: var(--color-accent-dark);
}

/* ---------- progress bar ---------- */
.qz-progress-bar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 32px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.qz-progress-info {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
}

.qz-progress-label {
  font-family: var(--font-quiz);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.24px;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.qz-progress-value {
  font-family: var(--font-quiz);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text);
}

.qz-progress-track {
  flex: 1;
  height: 16px;
  border-radius: 200px;
  background: var(--color-quiz-track);
  overflow: hidden;
}

.qz-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--color-quiz-fill);
  border-radius: 200px;
  transition: width 0.25s ease;
}

.qz-timer {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 20px;
  background: var(--color-accent-tint);
  color: var(--color-accent-dark);
  font-family: var(--font-quiz);
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

/* ---------- dot nav badges (paper-answered indicator) ---------- */
.wr-dot {
  position: relative;
}

.qz-dot-badge {
  position: absolute;
  bottom: -3px;
  right: -3px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #ff8f00;
  border: 2px solid var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8px;
}

/* ---------- quiz card ---------- */
.qz-card-wrap {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.qz-card {
  width: 100%;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 24px rgba(18, 38, 63, 0.03);
  padding: 26px 30px 30px;
}

.qz-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}

.qz-question-title {
  margin: 0;
  font-family: var(--font-quiz);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
}

.qz-question-marks {
  margin: 4px 0 0;
  font-family: var(--font-quiz);
  font-size: 14px;
  font-weight: 400;
  color: #8a8a8a;
}

.qz-nav-arrows {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.qz-nav-arrow {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: none;
  background: var(--color-warn-bg);
  color: #b8860f;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qz-nav-arrow:hover:not(:disabled) {
  background: #fdf0b0;
}

.qz-nav-arrow:disabled {
  opacity: 0.4;
  cursor: default;
}

.qz-question-prompt {
  margin: 0 0 22px;
  font-size: 14.5px;
  color: var(--color-text);
  line-height: 1.6;
}

/* ---------- answer states ---------- */
.qz-type-answer {
  width: 100%;
  min-height: 120px;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 13.5px;
  color: var(--color-text);
  resize: vertical;
  margin-bottom: 14px;
}

.qz-answer-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 4px 0 16px;
}

.qz-answer-divider::before,
.qz-answer-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.qz-answer-divider span {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.qz-paper-summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: #fafafa;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.qz-paper-thumb {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qz-paper-thumb .wr-handwriting {
  font-size: 7px;
  transform: scale(0.9);
}

.qz-paper-summary-body {
  flex: 1;
  min-width: 0;
}

.qz-paper-summary-body .link-text {
  display: block;
  margin-bottom: 6px;
}

.qz-answered-pill {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  background: var(--color-accent-tint);
  color: var(--color-accent-dark);
}

.qz-text-summary-box {
  padding: 14px 16px;
  background: #fafafa;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 14px;
  max-height: 140px;
  overflow-y: auto;
}

.send-feedback-link {
  font-family: var(--font-quiz);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
  text-decoration: none;
}

.send-feedback-link:hover {
  text-decoration: underline;
  color: var(--color-accent-dark);
}

/* ---------- quiz side toolbar ---------- */
.qz-toolbar {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  height: fit-content;
}

.qz-toolbar-btn {
  width: 44px;
  height: 44px;
  border-radius: 0 8px 8px 0;
  border: none;
  background: var(--color-accent-tint);
  color: var(--color-accent);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qz-toolbar-btn:hover {
  background: #cdeeff;
}

.qz-toolbar-btn svg {
  stroke: var(--color-accent);
}

/* ---------- paper-answer capture: photo stage ---------- */
.qz-photo-stage {
  background: #e5e7eb;
  border-radius: var(--radius-md);
  padding: 22px;
  margin-bottom: 16px;
}

.qz-photo-stage--small {
  padding: 14px;
}

.qz-photo-page {
  background: var(--color-surface);
  padding: 22px 24px;
  border-radius: 4px;
}

.qz-handwriting-text {
  min-height: 70px;
}

/* raw camera-capture look: warm paper tone, slight tilt, soft shadow, light vignette */
.qz-photo-page--capture {
  position: relative;
  background: #fdfcf6;
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.22), 0 2px 6px rgba(0, 0, 0, 0.12);
  transform: rotate(-0.6deg);
  overflow: hidden;
}

.qz-photo-page--capture::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 50% 12%, rgba(255, 255, 255, 0.3), rgba(0, 0, 0, 0.03) 65%, rgba(0, 0, 0, 0.14) 100%);
  pointer-events: none;
}

.qz-check-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--color-warn-bg);
  transition: background 0.2s;
}

.qz-check-banner--success {
  background: var(--color-ok-bg);
}

.qz-check-banner-title {
  margin: 0 0 2px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--color-heading);
}

.qz-check-banner-desc {
  margin: 0;
  font-size: 12px;
  color: var(--color-text-muted);
}

.qz-check-banner-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qz-check-banner-icon--success {
  border-radius: 50%;
  background: var(--color-ok-text);
  color: #fff;
}

/* ---------- convert-to-text modal ---------- */
.qz-convert-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.qz-convert-col {
  display: flex;
  flex-direction: column;
}

.qz-convert-label {
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.qz-convert-textarea {
  flex: 1;
  min-height: 160px;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 13.5px;
  color: var(--color-text);
  line-height: 1.6;
  resize: vertical;
}

.qz-convert-hint {
  margin: 8px 2px 0;
  font-size: 11.5px;
  color: var(--color-text-muted);
}

/* ---------- your answer viewer ---------- */
.qz-view-answer-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.qz-view-edit-text {
  padding: 7px 16px;
  font-size: 12.5px;
}

/* ---------- quiz result / marking screen (accordion, matches onlinequizv2) ---------- */
.qr-status-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 32px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.qr-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 16px;
  border-radius: 16px;
  background: var(--color-surface);
  font-family: var(--font-quiz);
  font-size: 12.5px;
  font-weight: 700;
  border: 2px solid;
}

.qr-status-pill--marked {
  color: var(--color-tab-active);
  border-color: var(--color-tab-active);
}

.qr-status-pill--score {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.wr-body--result {
  align-items: flex-start;
}

.qr-list {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.qr-panel {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: 0 1px 3px rgba(17, 24, 39, 0.08);
  overflow: hidden;
}

.qr-tabs {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  padding: 10px 14px 0;
  background: var(--color-bg);
}

.qr-tab {
  border: none;
  background: transparent;
  padding: 12px 18px;
  font-family: var(--font-quiz);
  font-size: 13.5px;
  font-weight: 600;
  color: #95aac9;
  cursor: pointer;
  border-radius: 8px 8px 0 0;
}

.qr-tab-sub {
  display: none;
}

.qr-tab.active {
  background: var(--color-surface);
  color: var(--color-accent);
  font-weight: 700;
}

.qr-review-btn {
  margin-left: auto;
  align-self: flex-end;
  padding: 10px 18px;
  border-radius: 12px 12px 0 0;
  border: none;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-quiz);
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
}

.qr-review-btn:hover {
  background: var(--color-accent-dark);
}

.qr-panel-body {
  padding: 22px 26px 28px;
}

.qr-marks-obtained {
  margin: 16px 0 0;
  font-size: 13.5px;
  color: var(--color-text);
}

.qr-send-feedback {
  display: block;
  text-align: right;
  margin-top: 14px;
}

.qr-stat-line {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 700;
  color: #b8860f;
}

.qr-group-stats {
  display: none;
  padding: 12px 16px;
  margin-bottom: 16px;
  background: var(--color-warn-bg);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-text);
}

.qr-group-stats.open {
  display: block;
}

.qr-tab-content {
  display: none;
}

.qr-tab-content.active {
  display: block;
}

.qr-label {
  margin: 0 0 6px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.qr-question-text {
  margin: 0;
  font-size: 14.5px;
  color: var(--color-text);
  line-height: 1.6;
}

.qr-ai-banner {
  display: flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  padding: 8px 16px;
  margin: 10px 0 16px;
  border-radius: 20px;
  background: var(--color-warn-bg);
  color: #b8860f;
  font-size: 12.5px;
  font-weight: 700;
}

.qr-photo-stage {
  margin-bottom: 0;
}

.qr-highlighted-text mark {
  border-radius: 3px;
  padding: 0 2px;
  cursor: pointer;
}

.qr-mark-blue {
  background: #cdeeff;
}

.qr-mark-green {
  background: #d4f5df;
}

.qr-mark-amber {
  background: #fff2b8;
}

.qr-highlighted-text mark.qr-mark-active {
  box-shadow: 0 0 0 2px var(--color-heading);
}

.qr-feedback-panel {
  margin: 14px 0 0;
  padding: 14px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-heading);
  border-radius: var(--radius-sm);
}

.qr-feedback-label {
  margin: 0 0 6px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.qr-feedback-quote {
  margin: 0 0 6px;
  font-size: 13.5px;
  font-weight: 700;
  font-style: italic;
  color: var(--color-heading);
}

.qr-feedback-remark {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--color-text);
  line-height: 1.55;
}

.qr-feedback-pill {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 700;
}

.qr-feedback-pill--correct {
  background: var(--color-ok-bg);
  color: var(--color-ok-text);
}

.qr-feedback-pill--improve {
  background: var(--color-warn-bg);
  color: #b8860f;
}

.qr-feedback-pill--info {
  background: var(--color-accent-tint);
  color: var(--color-accent-dark);
}

/* =========================================================
   FLOW 4 — Self-upload worksheet (challenge landing + result)
   ========================================================= */

.wr-exit-btn--solid {
  background: var(--color-accent);
  border: none;
}

.wr-exit-btn--solid:hover {
  background: var(--color-accent-dark);
}

#screen-challenge {
  min-height: 100vh;
  background: var(--color-bg);
}

.f4-hero {
  position: relative;
  background-color: var(--color-accent);
  background-image: radial-gradient(circle at 12% 35%, rgba(255, 255, 255, 0.12) 0 3px, transparent 3px 42px),
    radial-gradient(circle at 78% 65%, rgba(255, 255, 255, 0.12) 0 3px, transparent 3px 42px),
    repeating-linear-gradient(60deg, rgba(255, 255, 255, 0.06) 0 2px, transparent 2px 32px);
  padding: 20px 32px 64px;
}

.f4-hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.f4-breadcrumb {
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  font-weight: 700;
}

.f4-breadcrumb span {
  margin: 0 4px;
  color: rgba(255, 255, 255, 0.55);
}

.f4-exit-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 20px;
  background: #f5a623;
  color: #fff;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.f4-exit-btn:hover {
  background: #d98f16;
}

.f4-challenge-pill {
  display: inline-block;
  margin-top: 14px;
  padding: 5px 14px;
  border-radius: 8px;
  background: #f5a623;
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.f4-hero-icon {
  position: absolute;
  left: 50%;
  bottom: -28px;
  transform: translateX(-50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-accent-tint);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(13, 147, 204, 0.35);
}

.f4-card-wrap {
  max-width: 780px;
  margin: 0 auto;
  padding: 40px 32px 60px;
}

.f4-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 24px rgba(18, 38, 63, 0.06);
  padding: 32px 40px 40px;
}

.f4-category {
  margin: 0 0 4px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-tab-active);
}

.f4-title {
  margin: 0 0 24px;
  font-family: var(--font-heading);
  font-size: 34px;
  font-weight: 700;
  color: var(--color-heading);
}

.f4-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 24px;
  margin-bottom: 24px;
}

.f4-meta-label {
  margin: 0 0 4px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.f4-meta-value {
  margin: 0;
  font-size: 15px;
  color: var(--color-text);
}

.f4-instructions {
  background: #f7f7f8;
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin-bottom: 26px;
}

.f4-instructions ol {
  margin: 0;
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.f4-instructions li {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.5;
}

.f4-upload-btn {
  width: 100%;
  justify-content: center;
  padding: 14px 20px;
  font-size: 15px;
}

.f4-download-link {
  display: block;
  text-align: center;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
  text-decoration: none;
}

.f4-download-link:hover {
  text-decoration: underline;
}

.f4-ready-pill {
  display: block;
  width: fit-content;
  margin: 0 auto 14px;
  padding: 7px 16px;
  border-radius: 20px;
  background: var(--color-ok-bg);
  color: var(--color-ok-text);
  font-size: 12.5px;
  font-weight: 700;
}

/* ---------- review upload modal ---------- */
.f4-review-stage {
  background: #e5e7eb;
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  justify-content: center;
}

.f4-review-page {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 3 / 4;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: 4px;
}

.f4-confirm-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding: 13px 16px;
  background: #f7f7f8;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  color: var(--color-text);
  cursor: pointer;
}

.f4-confirm-row input {
  width: 17px;
  height: 17px;
  accent-color: var(--color-accent);
}

/* =========================================================
   FLOW 5 — Tutor "View Worksheet" detail + Export PDF entry
   ========================================================= */

.f5-page {
  min-height: 100vh;
  background: var(--color-bg);
}

.f5-topbar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 22px;
  background: #dce4f0;
}

.f5-goback {
  position: absolute;
  left: 22px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
}

.f5-goback:hover {
  text-decoration: underline;
}

.f5-topbar-title {
  font-weight: 600;
  font-size: 19px;
  color: var(--color-text);
}

.f5-body {
  display: grid;
  grid-template-columns: 140px 1fr;
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 24px 60px;
  gap: 20px;
}

/* ---------- sidebar question list ---------- */
.f5-sidebar-title {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
}

.f5-sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.f5-sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 10px 12px;
  cursor: pointer;
  transition: border-color 0.12s ease;
}

.f5-sidebar-card:hover {
  border-color: var(--color-accent);
}

.f5-sidebar-qnum {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 4px;
}

.f5-sidebar-snippet {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* ---------- head card ---------- */
.f5-main {
  min-width: 0;
}

.f5-head-card {
  position: relative;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.f5-edit-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border-radius: var(--radius-btn);
  border: none;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.f5-edit-btn:hover {
  background: var(--color-accent-dark);
}

.f5-head-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 200px;
}

.f5-ws-icon {
  font-size: 20px;
}

.f5-category {
  margin: 0 0 2px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-tab-active);
}

.f5-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-heading);
}

.f5-head-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.f5-action-btn {
  padding: 9px 16px;
  font-size: 13.5px;
}

.f5-export-wrap {
  position: relative;
}

.f5-export-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 28px rgba(17, 24, 39, 0.14);
  padding: 6px;
  min-width: 160px;
  z-index: 20;
}

.f5-export-menu.open {
  display: block;
}

.f5-export-menu button {
  width: 100%;
  text-align: left;
  padding: 9px 10px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-text);
  cursor: pointer;
}

.f5-export-menu button:hover {
  background: var(--color-accent-tint);
  color: var(--color-accent-dark);
}

.f5-assign-btn {
  width: 100%;
  justify-content: center;
  padding: 11px 16px;
}

/* ---------- info pills ---------- */
.f5-info-row {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.f5-info-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  font-size: 13px;
  color: var(--color-text);
}

/* ---------- question card ---------- */
.f5-q-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 18px 22px 22px;
  margin-bottom: 14px;
}

.f5-q-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  background: #f0f2f5;
  margin: -18px -22px 14px;
  padding: 14px 22px;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.f5-q-heading {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
}

.f5-q-heading span {
  font-weight: 600;
  color: var(--color-text-muted);
  margin-left: 4px;
}

.f5-q-badges {
  display: flex;
  gap: 8px;
}

.f5-badge {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 11.5px;
  color: var(--color-text-muted);
}

.f5-flag-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-btn);
  border: none;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  flex-shrink: 0;
}

.f5-flag-btn:hover {
  background: var(--color-accent-dark);
}

.f5-tag-row {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.f5-tag {
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 12px;
  color: var(--color-text-muted);
}

.f5-q-prompt {
  margin: 0 0 14px;
  font-size: 14.5px;
  color: var(--color-text);
  line-height: 1.6;
}

.f5-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 18px;
}

.f5-option {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text);
}

.f5-option-radio {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid var(--color-border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #fff;
}

.f5-option--correct .f5-option-radio {
  background: var(--color-ok-text);
  border-color: var(--color-ok-text);
}

.f5-solution-btn {
  padding: 9px 20px;
  font-size: 13.5px;
}

.qr-plain-text {
  margin: 16px 0 4px;
  padding: 14px 16px;
  background: #fafafa;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  color: var(--color-text);
  line-height: 1.6;
}

.qr-words-count {
  margin: 0;
  text-align: right;
  font-size: 11.5px;
  color: var(--color-text-muted);
}

/* question header inside the details panel: tab on the left, prev/next chevrons on the right */
.f4-detail-head {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: var(--color-surface);
}

.f4-q-nav {
  display: flex;
  gap: 8px;
}

/* =========================================================
   FLOW 4 result screen - phone layouts
   Portrait : document on top, details in a draggable bottom sheet.
   Landscape: document and details side by side, compact header.
   Scoped to #screen-f4-result so other reviewer screens are untouched.
   ========================================================= */

:root {
  --f4-sheet-peek: 120px; /* keep in sync with f4SheetStops() in app-flow4.js */
  --f4-sheet-half: 46dvh;
  --f4-sheet-full: 86dvh;
}

.f4-sheet-handle {
  display: none;
}

@media (max-width: 640px) and (orientation: portrait) {
  #screen-f4-result {
    bottom: auto;
    height: 100vh;
    height: 100dvh;
  }

  #screen-f4-result .wr-header {
    padding: 12px 16px;
  }

  #screen-f4-result .wr-header-title {
    font-size: 16px;
  }

  #screen-f4-result .wr-exit-btn {
    right: 12px;
    padding: 6px 12px;
    font-size: 12px;
  }

  #screen-f4-result .qr-status-bar {
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 16px;
  }

  #screen-f4-result .qr-status-pill {
    padding: 5px 12px;
    font-size: 12px;
  }

  #screen-f4-result .wr-body {
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: hidden;
  }

  /* question navigation becomes a horizontal strip */
  #screen-f4-result .wr-dots {
    flex-direction: row;
    justify-content: center;
    flex-shrink: 0;
    overflow-x: auto;
    padding: 10px 12px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
  }

  #screen-f4-result .wr-dot {
    width: 32px;
    height: 32px;
    font-size: 12px;
  }

  #screen-f4-result .wr-dot-connector {
    flex: none;
    width: 14px;
    min-height: 0;
    height: 2px;
  }

  /* the document is the only scroller; bottom padding keeps its end clear of the sheet */
  #screen-f4-result .wr-scan-wrap {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    border-radius: 0;
    padding: 12px 12px calc(var(--f4-sheet-peek) + 16px + env(safe-area-inset-bottom));
  }

  #screen-f4-result .wr-scan-page {
    padding: 16px 14px;
  }

  #screen-f4-result .f4-sheet {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 5;
    display: flex;
    flex-direction: column;
    width: auto;
    height: calc(var(--f4-sheet-peek) + env(safe-area-inset-bottom));
    padding: 0;
    border-radius: 20px 20px 0 0;
    box-shadow: 0 -8px 24px rgba(17, 24, 39, 0.14);
    transition: height 0.22s ease;
  }

  #screen-f4-result .f4-sheet[data-sheet="half"] {
    height: var(--f4-sheet-half);
  }

  #screen-f4-result .f4-sheet[data-sheet="full"] {
    height: var(--f4-sheet-full);
  }

  #screen-f4-result .f4-sheet.is-dragging {
    transition: none;
  }

  #screen-f4-result .f4-sheet-handle {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 100%;
    height: 28px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: grab;
    touch-action: none;
  }

  .f4-sheet-grip {
    width: 40px;
    height: 4px;
    border-radius: 2px;
    background: #cbd5e1;
  }

  /* peek shows only the summary (tab, result pill, marks); correct answer and remarks follow below it */
  #screen-f4-result .f4-sheet-body {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    align-items: center;
    gap: 8px 12px;
    overflow: hidden;
    overscroll-behavior: contain;
    padding: 0 16px calc(16px + env(safe-area-inset-bottom));
  }

  #screen-f4-result .f4-sheet[data-sheet="half"] .f4-sheet-body,
  #screen-f4-result .f4-sheet[data-sheet="full"] .f4-sheet-body {
    overflow-y: auto;
  }

  #screen-f4-result .f4-sheet-body > * {
    order: 3;
    flex: 0 0 100%;
    margin: 0;
  }

  #screen-f4-result .f4-sheet-body > .f4-detail-head {
    order: 0;
  }

  #screen-f4-result .f4-detail-head .wr-detail-qtab {
    border-radius: var(--radius-sm);
  }

  #screen-f4-result .f4-sheet-body > .wr-detail-pill {
    order: 1;
    flex: none;
  }

  /* pill and marks share one line when they fit, so peek still shows the whole summary */
  #screen-f4-result .f4-sheet-body > .wr-marks-row {
    order: 2;
    flex: none;
  }

  #screen-f4-result .f4-sheet-body > .wr-detail-label {
    margin-top: 8px;
  }
}

@media (max-height: 500px) and (orientation: landscape) {
  #screen-f4-result .wr-header {
    padding: 6px 16px;
  }

  #screen-f4-result .wr-header-title {
    font-size: 14px;
  }

  #screen-f4-result .wr-exit-btn {
    right: 12px;
    padding: 4px 12px;
    font-size: 12px;
  }

  #screen-f4-result .qr-status-bar {
    gap: 8px;
    padding: 4px 16px;
  }

  #screen-f4-result .qr-status-pill {
    padding: 3px 12px;
    font-size: 11.5px;
  }

  #screen-f4-result .wr-body {
    gap: 10px;
    overflow: hidden;
    padding: 8px calc(12px + env(safe-area-inset-right)) 8px calc(12px + env(safe-area-inset-left));
  }

  #screen-f4-result .wr-dots {
    overflow-y: auto;
    padding-top: 0;
  }

  #screen-f4-result .wr-dot {
    width: 28px;
    height: 28px;
    font-size: 11px;
  }

  #screen-f4-result .wr-dot-connector {
    min-height: 6px;
  }

  #screen-f4-result .wr-scan-wrap {
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 10px;
  }

  #screen-f4-result .wr-scan-page {
    padding: 14px 16px;
  }

  /* details keep their own scroll, so remarks and marks are never pushed off screen */
  #screen-f4-result .wr-detail-panel {
    width: clamp(240px, 38vw, 320px);
    height: 100%;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 12px 14px;
  }

  #screen-f4-result .wr-detail-label {
    margin: 10px 0 4px;
  }
}