:root {
  --navy: #0b3260;
  --blue: #1d4ed8;
  --gold: #d4af37;
  --text: #0f172a;
  --muted: #64748b;
  --line: #dbe3ee;
  --surface: #ffffff;
  --background: #f4f7fb;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: Arial, Helvetica, sans-serif;
}
.teacher-app { min-height: 100vh; }
.teacher-topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 64px;
  padding: 12px 28px;
  color: #fff;
  background: var(--navy);
}
.teacher-brand { font-weight: 800; }
.teacher-brand small { display: block; margin-top: 2px; font-weight: 500; opacity: .85; }
.teacher-user { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.teacher-content { max-width: 1050px; margin: 0 auto; padding: 34px 22px 60px; }
.page-heading { margin-bottom: 24px; }
.page-heading h1 { margin: 0 0 8px; font-size: 2rem; }
.page-heading p { margin: 0; color: var(--muted); line-height: 1.5; }
.panel {
  margin-bottom: 20px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
}
.card-list { display: grid; gap: 14px; }
.item-card {
  padding: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
}
.item-card h3 { margin: 0 0 6px; }
.item-card p { margin: 4px 0; }
.muted { color: var(--muted); }
.empty { color: var(--muted); padding: 12px 0; }
.link-button {
  color: inherit;
  background: transparent;
  border: 0;
  text-decoration: underline;
  cursor: pointer;
}
.portal-context-switcher {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
}
.teacher-topbar .portal-context-switcher { margin-left: auto; }
.teacher-user.context-enabled { margin-left: 0; }
.portal-context-switcher select {
  min-height: 34px;
  padding: 5px 8px;
  border: 1px solid rgba(255,255,255,.5);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
}
.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: min(560px, 100%);
  padding: 32px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 18px 45px rgba(15,23,42,.09);
}
.login-card h1 { margin-top: 0; }
.login-card p { color: #475569; line-height: 1.6; }
.primary-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  color: #fff;
  background: var(--navy);
  border: 0;
  border-radius: 9px;
  font-weight: 700;
  cursor: pointer;
}
.message {
  margin: 14px 0;
  padding: 12px 14px;
  border-radius: 8px;
}
.message.error { color: #991b1b; background: #fee2e2; }
@media (max-width: 720px) {
  .teacher-topbar { flex-wrap: wrap; padding: 12px 16px; }
  .teacher-user { width: 100%; margin-left: 0; justify-content: space-between; }
  .teacher-user.context-enabled {
    width: auto;
    justify-content: flex-end;
  }
  .teacher-content { padding: 24px 14px 48px; }
}

.hidden { display: none !important; }
.teacher-page-nav {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
}
.teacher-page-nav a {
  padding: 8px 12px;
  color: var(--navy);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
}
.teacher-page-nav a[aria-current="page"] {
  color: #fff;
  background: var(--navy);
  border-color: var(--navy);
}
.teacher-tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}
.tool-card {
  display: grid;
  gap: 8px;
  padding: 20px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  text-decoration: none;
}
.tool-card strong { color: var(--navy); font-size: 1.08rem; }
.tool-card span { color: var(--muted); line-height: 1.45; }
.disabled-card { opacity: .72; }
.panel-heading-row,
.resource-heading,
.library-card-heading,
.resource-footer,
.form-actions,
.button-row,
.search-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.panel-heading-row,
.resource-heading,
.library-card-heading {
  justify-content: space-between;
}
.panel-heading-row h2,
.resource-heading h3 {
  margin: 0 0 6px;
}
.compact { margin: 4px 0; }
.search-row { align-items: end; margin-top: 18px; }
.grow-field { flex: 1; }
.search-row label,
.field {
  display: grid;
  gap: 6px;
  font-weight: 700;
}
.search-row input,
.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 42px;
  padding: 9px 11px;
  color: var(--text);
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font: inherit;
  font-weight: 400;
}
.field textarea {
  min-height: 90px;
  resize: vertical;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.span-2 { grid-column: 1 / -1; }
.secondary-button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  color: var(--navy);
  background: #fff;
  border: 1px solid #9fb0c5;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
}
.primary-button:disabled,
.secondary-button:disabled {
  cursor: wait;
  opacity: .6;
}
.dark-link { color: var(--navy); }
.resource-heading { margin: 24px 0 12px; }
.resource-list { display: grid; gap: 14px; }
.resource-card {
  padding: 16px;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 10px;
}
.resource-footer { justify-content: space-between; }
.inline-check {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
}
.inline-check input { width: auto; }
.danger-link {
  padding: 0;
  color: #b91c1c;
  background: transparent;
  border: 0;
  text-decoration: underline;
  cursor: pointer;
}
.form-actions { justify-content: flex-end; margin-top: 18px; }
.assignment-library-card { display: grid; gap: 8px; }
.architecture-note { border-left: 4px solid var(--gold); }
.message.success { color: #166534; background: #dcfce7; }
@media (max-width: 720px) {
  .teacher-tool-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }
  .span-2 { grid-column: auto; }
  .panel-heading-row,
  .resource-heading,
  .library-card-heading,
  .search-row {
    align-items: stretch;
    flex-direction: column;
  }
  .button-row { flex-wrap: wrap; }
}

/* Sprint 6.6E1 Assignment Editor UX */
.teacher-content { max-width: 1120px; }
.assignment-editor { padding: 24px; }
.editor-heading-row { align-items: flex-start; margin-bottom: 18px; }
.editor-context-line {
  margin: 3px 0 5px;
  color: var(--navy);
  font-weight: 700;
}
.editor-section {
  margin-top: 18px;
  padding: 20px;
  background: #fbfdff;
  border: 1px solid var(--line);
  border-radius: 12px;
}
.editor-section-heading { margin-bottom: 16px; }
.editor-section-heading h3 { margin: 0 0 5px; }
.editor-section-heading p { margin: 0; }
.resources-section { background: #f8fafc; }
.resource-heading { margin: 0 0 16px; align-items: flex-start; }
.resource-heading p { max-width: 720px; margin: 0 0 8px; }
.tertiary-button {
  padding: 3px 0;
  color: var(--navy);
  background: transparent;
  border: 0;
  font: inherit;
  font-weight: 700;
  text-decoration: underline;
  cursor: pointer;
}
.source-feedback,
.source-inline-status {
  margin-top: 8px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: .9rem;
  line-height: 1.4;
}
.source-feedback.success,
.source-inline-status.success {
  color: #166534;
  background: #dcfce7;
  border: 1px solid #bbf7d0;
}
.source-feedback.info,
.source-inline-status.info {
  color: #075985;
  background: #e0f2fe;
  border: 1px solid #bae6fd;
}
.source-feedback.error,
.source-inline-status.error {
  color: #991b1b;
  background: #fee2e2;
  border: 1px solid #fecaca;
}
.resource-list { gap: 16px; }
.resource-card {
  padding: 0;
  overflow: hidden;
  background: #fff;
  border-color: #cbd5e1;
  box-shadow: 0 1px 2px rgba(15,23,42,.03);
}
.resource-card-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
  background: #f8fafc;
  border-bottom: 1px solid var(--line);
}
.resource-number {
  margin: 0;
  color: var(--navy);
  font-size: 1rem;
}
.resource-card-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.resource-card-body { padding: 16px; }
.resource-advanced {
  padding-top: 2px;
  border-top: 1px solid var(--line);
}
.resource-advanced summary {
  width: fit-content;
  padding: 10px 0 2px;
  color: var(--navy);
  font-weight: 700;
  cursor: pointer;
}
.resource-advanced-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding-top: 12px;
}
.resource-capability-note {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: .88rem;
  font-weight: 400;
}
.editor-actions {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.editor-actions .secondary-button { min-width: 92px; }
.editor-actions .primary-button { min-width: 160px; }
@media (max-width: 720px) {
  .assignment-editor { padding: 18px; }
  .editor-section { padding: 16px; }
  .resource-card-heading,
  .resource-card-actions {
    align-items: flex-start;
    flex-direction: column;
  }
  .resource-card-actions { gap: 8px; }
  .resource-advanced-grid { grid-template-columns: 1fr; }
  .editor-actions { align-items: stretch; }
  .editor-actions button { width: 100%; }
}

/* Sprint 6.6E2 assignment workflow/history */
.assignment-page-nav,.assignment-filters,.assignment-admin-filters{display:flex;gap:12px;align-items:end;flex-wrap:wrap;margin-bottom:18px}.assignment-page-nav{align-items:center}.assignment-page-nav a{font-weight:700;text-decoration:none}.assignment-page-nav a[aria-current="page"]{text-decoration:underline}.assignment-list{display:grid;gap:14px}.assignment-card{display:flex;justify-content:space-between;gap:18px;align-items:center;border:1px solid var(--line,#d7dee8);border-radius:12px;padding:16px}.assignment-card h3{margin:0 0 7px}.assignment-card p{margin:4px 0}.assignment-detail-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px}.assignment-check-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px}.assignment-check{display:flex;gap:8px;align-items:center;padding:9px;border:1px solid var(--line,#d7dee8);border-radius:8px}.assignment-check input{width:auto}.assignment-workflow-grid{margin-bottom:14px}.assignment-admin-filters label,.assignment-filters label{min-width:150px}.hidden{display:none!important}.status.SUBMITTED_FOR_REVIEW{background:#fef3c7;color:#92400e}.status.COMPLETED{background:#dcfce7;color:#166534}.status.NOT_COMPLETED{background:#e2e8f0;color:#475569}@media(max-width:700px){.assignment-card,.assignment-detail-grid{display:block}.assignment-card button{margin-top:12px;width:100%}}

/* Sprint 6.6E2 consolidated hotfix */
.local-message{margin:12px 0}.inline-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.status-badge{display:inline-flex;align-items:center;white-space:nowrap;padding:4px 9px;border-radius:999px;font-size:.82rem;font-weight:800}.status-badge.NOT_COMPLETED{background:#e2e8f0;color:#475569}.status-badge.SUBMITTED_FOR_REVIEW{background:#fef3c7;color:#92400e}.status-badge.COMPLETED{background:#dcfce7;color:#166534}.clickable-table tbody tr[data-row]{cursor:pointer}.clickable-table tbody tr[data-row]:hover{background:#f8fafc}.clickable-table tbody tr[data-row]:focus-visible{outline:3px solid #93c5fd;outline-offset:-3px}.current-badge{display:inline-block;padding:2px 7px;border-radius:999px;background:#dcfce7;color:#166534;font-size:.75rem;font-weight:800}.audit-list{display:grid;gap:10px;list-style:none;padding:0}.audit-list li{display:grid;gap:2px;padding:10px 12px;border:1px solid var(--line);border-radius:9px}.audit-list span,.audit-list small{color:var(--muted)}.portal-dialog{width:min(620px,calc(100vw - 32px));border:0;border-radius:14px;padding:24px;box-shadow:0 24px 80px rgba(15,23,42,.25)}.portal-dialog.wide-dialog{width:min(1000px,calc(100vw - 32px))}.portal-dialog::backdrop{background:rgba(15,23,42,.5)}.dialog-close{float:right;background:transparent!important;color:#475569!important;border:0!important;font-size:1.6rem;box-shadow:none!important}.portal-dialog form{display:grid;gap:14px}.valid{color:#166534}.invalid{color:#991b1b}.resource-url-error{display:block;color:#991b1b;margin-top:5px}.quick-grade-button{white-space:nowrap}button:disabled,.primary-button:disabled,.secondary-button:disabled{opacity:.55!important;cursor:not-allowed!important;background:#e2e8f0!important;color:#64748b!important;border-color:#cbd5e1!important;box-shadow:none!important;transform:none!important}button:disabled:hover,.primary-button:disabled:hover,.secondary-button:disabled:hover{background:#e2e8f0!important;color:#64748b!important;box-shadow:none!important;transform:none!important}

/* Sprint 6.6E2 Teacher history presentation-only width/readability hotfix */
.assignment-workflow-page .teacher-content {
  max-width: 1500px;
}
.assignment-workflow-page .table-wrap {
  overflow-x: auto;
}
.assignment-workflow-page .clickable-table {
  width: 100%;
  min-width: 1120px;
  border-collapse: collapse;
}
.assignment-workflow-page .clickable-table th,
.assignment-workflow-page .clickable-table td {
  padding: 12px 10px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.4;
}
.assignment-workflow-page .clickable-table th {
  color: var(--muted);
  font-size: 12px;
}
.assignment-workflow-page .clickable-table th:nth-child(1) { min-width: 220px; }
.assignment-workflow-page .clickable-table th:nth-child(2) { min-width: 180px; }
.assignment-workflow-page .clickable-table th:nth-child(3) { min-width: 200px; }
.assignment-workflow-page .clickable-table th:nth-child(4) { min-width: 120px; }
.assignment-workflow-page .clickable-table th:nth-child(5) { min-width: 105px; }
.assignment-workflow-page .clickable-table th:nth-child(6) { min-width: 105px; }
.assignment-workflow-page .clickable-table th:nth-child(7) { min-width: 145px; }
.assignment-workflow-page .clickable-table td:nth-child(4),
.assignment-workflow-page .clickable-table td:nth-child(5),
.assignment-workflow-page .clickable-table td:nth-child(6),
.assignment-workflow-page .clickable-table td:nth-child(7) {
  white-space: nowrap;
}
@media (max-width: 720px) {
  .assignment-workflow-page .teacher-content {
    padding-left: 14px;
    padding-right: 14px;
  }
}