:root {
  --ink: #15243a;
  --ink-soft: #31425a;
  --muted: #69778b;
  --line: #dce3ec;
  --surface: #ffffff;
  --background: #f3f6fa;
  --soft: #edf2f7;
  --success: #11704d;
  --success-bg: #e2f5ec;
  --warning: #9b6600;
  --warning-bg: #fff2cf;
  --danger: #9b2f2f;
  --danger-bg: #fde8e8;
  --info: #265fa4;
  --info-bg: #e8f1fb;
  --shadow: 0 12px 30px rgba(21, 36, 58, .08);
  --radius: 12px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--background);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

button, input, select, textarea { font: inherit; }

button { cursor: pointer; }

button:disabled { cursor: not-allowed; opacity: .56; }

.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: 72px;
  padding: 12px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
}

.brand strong, .brand span { display: block; }
.brand span { color: var(--muted); font-size: 12px; }

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  color: white;
  background: var(--ink);
  font-weight: 800;
  letter-spacing: .04em;
}

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

.role-switch {
  display: grid;
  gap: 3px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.role-switch select {
  min-width: 160px;
}

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 64px;
}

.test-mode-banner {
  margin-bottom: 22px;
  padding: 12px 16px;
  color: #6b4c0c;
  background: #fff7df;
  border: 1px solid #d9a441;
  border-radius: 8px;
  font-size: 14px;
}

.hero {
  padding: 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 36px;
  align-items: center;
  color: white;
  background: linear-gradient(135deg, #15243a 0%, #243b5c 100%);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.hero h1 {
  margin: 3px 0 10px;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.02;
}

.hero p { max-width: 720px; margin: 0; color: #dbe5f2; }

.hero .eyebrow { color: #a8c5e6; }

.hero-progress {
  padding: 18px;
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.20);
  border-radius: 12px;
}

.hero-progress span,
.hero-progress strong,
.hero-progress small { display: block; }

.hero-progress strong {
  margin: 5px 0 8px;
  font-size: 32px;
}

.hero-progress small { margin-top: 8px; color: #dbe5f2; }

.progress-track {
  height: 9px;
  overflow: hidden;
  background: #dfe6ef;
  border-radius: 999px;
}

.progress-track > span {
  width: 0;
  height: 100%;
  display: block;
  background: #2c8a67;
  border-radius: inherit;
  transition: width .25s ease;
}

.hero .progress-track { background: rgba(255,255,255,.17); }
.hero .progress-track > span { background: #8ed8bc; }

.portal-nav {
  position: sticky;
  top: 72px;
  z-index: 40;
  margin: 22px 0;
  padding: 7px;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  background: rgba(255,255,255,.96);
  border: 1px solid var(--line);
  border-radius: 11px;
  backdrop-filter: blur(12px);
}

.nav-tab {
  flex: 0 0 auto;
  padding: 9px 13px;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  border-radius: 8px;
  font-weight: 700;
}

.nav-tab.active {
  color: white;
  background: var(--ink);
}

.portal-view { display: block; }
.hidden { display: none !important; }

.page-heading,
.section-heading,
.workspace-header,
.bottom-actions {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.page-heading { margin-bottom: 22px; }

.page-heading h1,
.section-heading h2,
.workspace-header h2,
.panel h2 {
  margin: 2px 0 8px;
}

.page-heading p,
.section-heading p { margin: 0; }

.eyebrow {
  margin: 0;
  color: #607089;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.muted { color: var(--muted); }

.stat-grid {
  margin-bottom: 22px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.stat-card {
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.stat-card span,
.stat-card strong,
.stat-card small { display: block; }

.stat-card span { color: var(--muted); font-size: 12px; }
.stat-card strong { margin: 3px 0; font-size: 26px; }
.stat-card small { color: var(--muted); }

.panel,
.workspace,
.quiz-workspace,
.assessment-card,
.module-card,
.document-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel { padding: 22px; margin-bottom: 18px; }
.panel.compact { padding: 20px; }

.content-grid {
  display: grid;
  gap: 18px;
}

.content-grid.two-thirds { grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr); }
.content-grid.half { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.button {
  min-height: 38px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 750;
}

.button.primary { color: white; background: var(--ink); }
.button.secondary { color: var(--ink); background: var(--soft); border-color: var(--line); }
.button.ghost { color: var(--ink); background: transparent; border-color: var(--line); }
.button.small { min-height: 32px; padding: 5px 10px; font-size: 12px; }
.full-width { width: 100%; }

.icon-button {
  width: 36px;
  height: 36px;
  padding: 0;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: white;
  border: 1px solid var(--line);
  border-radius: 9px;
  font-size: 22px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
}

.badge.success { color: var(--success); background: var(--success-bg); }
.badge.warning { color: var(--warning); background: var(--warning-bg); }
.badge.danger { color: var(--danger); background: var(--danger-bg); }
.badge.info { color: var(--info); background: var(--info-bg); }
.badge.neutral { color: var(--ink-soft); background: var(--soft); }

.module-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.module-card {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.module-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.module-number {
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--ink);
  border-radius: 10px;
  font-weight: 800;
}

.module-card h2 { margin: 0; font-size: 20px; }
.module-card p { margin: 0; color: var(--muted); }

.module-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.module-card .button { margin-top: auto; align-self: flex-start; }

.document-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.document-mini {
  padding: 14px;
  background: var(--soft);
  border-radius: 9px;
}

.document-mini strong,
.document-mini span { display: block; }
.document-mini span { margin-top: 5px; color: var(--muted); font-size: 12px; }

.task-list,
.progress-list,
.admin-list,
.lesson-list {
  display: grid;
  gap: 10px;
}

.task-item,
.progress-item,
.admin-list-item,
.lesson-item {
  padding: 13px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: var(--soft);
  border-radius: 9px;
}

.lesson-item {
  align-items: flex-start;
  background: white;
  border: 1px solid var(--line);
}

.lesson-item h3 { margin: 0 0 4px; }
.lesson-item p { margin: 0; color: var(--muted); }

.filter-field,
.search-field {
  display: grid;
  gap: 5px;
  min-width: 220px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

input, select, textarea {
  width: 100%;
  padding: 10px 11px;
  color: var(--ink);
  background: white;
  border: 1px solid #cfd8e4;
  border-radius: 8px;
}

textarea { resize: vertical; }

.filter-row {
  margin-bottom: 15px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chip {
  padding: 7px 11px;
  color: var(--ink-soft);
  background: white;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-weight: 700;
}

.filter-chip.active { color: white; background: var(--ink); }

.document-list { display: grid; gap: 12px; }

.document-card {
  padding: 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
}

.document-card h2 { margin: 0 0 4px; font-size: 18px; }
.document-card p { margin: 0; color: var(--muted); }

.document-meta {
  margin-top: 9px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.document-actions { display: flex; gap: 8px; }

.assessment-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.assessment-card {
  padding: 20px;
}

.assessment-card h2 { margin: 10px 0 8px; }
.assessment-card p { color: var(--muted); }
.assessment-card ul { padding-left: 20px; color: var(--ink-soft); }

.assessment-card.locked { background: #f9fafc; }

.quiz-workspace,
.workspace {
  margin-top: 20px;
  padding: 22px;
}

.quiz-progress { margin: 16px 0 22px; }

.quiz-options {
  display: grid;
  gap: 10px;
}

.quiz-option {
  padding: 13px 14px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: white;
  border: 1px solid var(--line);
  border-radius: 9px;
}

.quiz-option:hover { border-color: #9eb1c8; }

.quiz-feedback {
  margin-top: 16px;
  padding: 14px;
  border-radius: 9px;
}

.quiz-feedback.correct { color: var(--success); background: var(--success-bg); }
.quiz-feedback.incorrect { color: var(--danger); background: var(--danger-bg); }

.bottom-actions {
  margin-top: 18px;
  align-items: center;
}

.timeline {
  position: relative;
  display: grid;
  gap: 15px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 19px;
  width: 2px;
  background: var(--line);
}

.timeline-item {
  position: relative;
  padding: 18px 18px 18px 58px;
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.timeline-dot {
  position: absolute;
  left: 11px;
  top: 22px;
  width: 18px;
  height: 18px;
  background: var(--ink);
  border: 4px solid var(--background);
  border-radius: 50%;
}

.timeline-item h2 { margin: 0 0 5px; }
.timeline-item p { margin: 0; color: var(--muted); }

.progress-item .progress-track { width: 140px; }

.empty-state {
  padding: 26px;
  color: var(--muted);
  text-align: center;
  background: var(--soft);
  border-radius: 10px;
}

.admin-action-grid {
  margin-bottom: 18px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.admin-action {
  min-height: 112px;
  padding: 16px;
  display: grid;
  align-content: center;
  gap: 5px;
  text-align: left;
  color: var(--ink);
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.admin-action:hover:not(:disabled) { border-color: #91a7c0; box-shadow: var(--shadow); }
.admin-action strong, .admin-action span { display: block; }
.admin-action span { color: var(--muted); font-size: 12px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
}

.form-grid label {
  display: grid;
  gap: 5px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 750;
}

.form-grid .full { grid-column: 1 / -1; }

.dialog {
  width: min(720px, calc(100% - 28px));
  padding: 0;
  border: 0;
  border-radius: 14px;
  box-shadow: 0 28px 80px rgba(21,36,58,.28);
}

.dialog::backdrop { background: rgba(8,17,30,.54); }

.dialog form { padding: 22px; }

.dialog-header,
.dialog-actions {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.dialog-header { margin-bottom: 18px; }
.dialog-header h2 { margin: 2px 0 0; }
.dialog-actions { margin-top: 20px; justify-content: flex-end; }

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 100;
  max-width: 360px;
  padding: 12px 15px;
  color: white;
  background: var(--ink);
  border-radius: 9px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: .2s ease;
}

.toast.show { opacity: 1; transform: translateY(0); }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .content-grid.two-thirds,
  .content-grid.half,
  .assessment-grid,
  .admin-action-grid { grid-template-columns: 1fr; }
  .module-grid { grid-template-columns: 1fr; }
  .document-strip { grid-template-columns: 1fr; }
  .document-card { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .app-header {
    padding: 10px 14px;
    align-items: flex-start;
  }
  .header-actions { align-items: stretch; flex-direction: column; }
  .role-switch select { min-width: 142px; }
  .app-shell { width: min(100% - 20px, 1180px); padding-top: 18px; }
  .hero { padding: 22px; }
  .portal-nav { top: 66px; }
  .page-heading,
  .section-heading,
  .workspace-header,
  .bottom-actions { flex-direction: column; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .filter-field,
  .search-field { width: 100%; min-width: 0; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .full { grid-column: auto; }
}

@media print {
  .app-header,
  .test-mode-banner,
  .portal-nav,
  .button,
  .filter-row { display: none !important; }
  body { background: white; }
  .app-shell { width: 100%; padding: 0; }
  .panel, .module-card, .document-card { box-shadow: none; }
}