.typiitest {
  --typiitest-bg: #ffffff;
  --typiitest-surface: #f8fafc;
  --typiitest-text: #111827;
  --typiitest-muted: #4b5563;
  --typiitest-border: #d1d5db;
  --typiitest-primary: #2563eb;
  --typiitest-primary-dark: #1d4ed8;
  --typiitest-success-bg: #dcfce7;
  --typiitest-success-text: #166534;
  --typiitest-error-bg: #fee2e2;
  --typiitest-error-text: #991b1b;
  --typiitest-current: #facc15;

  box-sizing: border-box;
  width: 100%;
  max-width: 960px;
  margin: 1.5rem auto;
  padding: clamp(1rem, 3vw, 1.5rem);
  color: var(--typiitest-text);
  background: var(--typiitest-bg);
  border: 1px solid var(--typiitest-border);
  border-radius: 18px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
}

.typiitest,
.typiitest * {
  box-sizing: border-box;
}

.typiitest__header {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.typiitest__title {
  margin: 0 0 0.35rem;
  font-size: clamp(1.45rem, 4vw, 2rem);
  line-height: 1.15;
}

.typiitest__intro,
.typiitest__help,
.typiitest__status,
.typiitest__passage-label {
  color: var(--typiitest-muted);
  font-size: 0.98rem;
  line-height: 1.5;
}

.typiitest__intro,
.typiitest__help,
.typiitest__status,
.typiitest__passage-label {
  margin: 0;
}

.typiitest__mode {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.75rem;
  color: #1e3a8a;
  background: #dbeafe;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
}

.typiitest__stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}

.typiitest__stat {
  min-width: 0;
  padding: 0.85rem 0.7rem;
  text-align: center;
  background: var(--typiitest-surface);
  border: 1px solid var(--typiitest-border);
  border-radius: 14px;
}

.typiitest__stat-value,
.typiitest__stat-label {
  display: block;
}

.typiitest__stat-value {
  font-size: clamp(1.2rem, 5vw, 1.7rem);
  line-height: 1.1;
  font-weight: 800;
}

.typiitest__stat-label {
  margin-top: 0.2rem;
  color: var(--typiitest-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.typiitest__passage-wrap {
  margin-top: 1rem;
}

.typiitest__passage-label {
  margin-bottom: 0.45rem;
  font-weight: 700;
}

.typiitest__passage {
  max-height: 17rem;
  overflow: auto;
  padding: 1rem;
  background: #f9fafb;
  border: 1px solid var(--typiitest-border);
  border-radius: 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: clamp(1rem, 2.5vw, 1.12rem);
  line-height: 1.85;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.typiitest__passage .is-correct {
  color: var(--typiitest-success-text);
  background: var(--typiitest-success-bg);
}

.typiitest__passage .is-incorrect {
  color: var(--typiitest-error-text);
  background: var(--typiitest-error-bg);
  text-decoration: underline;
  text-decoration-thickness: 0.12em;
}

.typiitest__passage .is-current {
  color: #422006;
  background: var(--typiitest-current);
  outline: 2px solid #ca8a04;
  outline-offset: 1px;
}

.typiitest__input-label {
  display: block;
  margin: 1rem 0 0.45rem;
  color: var(--typiitest-text);
  font-weight: 800;
}

.typiitest__input {
  display: block;
  width: 100%;
  min-height: 11rem;
  padding: 1rem;
  color: var(--typiitest-text);
  background: #ffffff;
  border: 2px solid var(--typiitest-border);
  border-radius: 14px;
  font: inherit;
  line-height: 1.55;
  resize: vertical;
}

.typiitest__input:focus,
.typiitest__button:focus-visible {
  border-color: var(--typiitest-primary);
  outline: 3px solid rgba(37, 99, 235, 0.25);
  outline-offset: 2px;
}

.typiitest__input:disabled {
  color: #6b7280;
  background: #f3f4f6;
  cursor: not-allowed;
}

.typiitest__help {
  margin-top: 0.45rem;
}

.typiitest__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.typiitest__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.65rem 1.1rem;
  color: #ffffff;
  background: var(--typiitest-primary);
  border: 0;
  border-radius: 999px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.typiitest__button:hover {
  background: var(--typiitest-primary-dark);
}

.typiitest__status {
  margin-top: 0.8rem;
  font-weight: 700;
}

@media (max-width: 720px) {
  .typiitest__header {
    display: block;
  }

  .typiitest__mode {
    margin-top: 0.8rem;
  }

  .typiitest__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .typiitest__stat:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 420px) {
  .typiitest {
    border-radius: 12px;
  }

  .typiitest__stats {
    gap: 0.55rem;
  }

  .typiitest__stat {
    padding: 0.7rem 0.45rem;
  }

  .typiitest__passage,
  .typiitest__input {
    padding: 0.8rem;
  }
}

@media (prefers-color-scheme: dark) {
  .typiitest {
    --typiitest-bg: #0f172a;
    --typiitest-surface: #111827;
    --typiitest-text: #f9fafb;
    --typiitest-muted: #cbd5e1;
    --typiitest-border: #334155;
    --typiitest-success-bg: #052e16;
    --typiitest-success-text: #bbf7d0;
    --typiitest-error-bg: #450a0a;
    --typiitest-error-text: #fecaca;
  }

  .typiitest__mode {
    color: #dbeafe;
    background: #1e3a8a;
  }

  .typiitest__passage,
  .typiitest__input {
    background: #020617;
  }

  .typiitest__input:disabled {
    color: #cbd5e1;
    background: #1f2937;
  }
}

@media (prefers-reduced-motion: reduce) {
  .typiitest,
  .typiitest * {
    scroll-behavior: auto !important;
  }
}

/* TypiiTest Teacher Edition classroom management */
.typiitest-account {
  --typiitest-bg: #ffffff;
  --typiitest-surface: #f8fafc;
  --typiitest-text: #111827;
  --typiitest-muted: #4b5563;
  --typiitest-border: #d1d5db;
  --typiitest-primary: #2563eb;
  --typiitest-primary-dark: #1d4ed8;
  box-sizing: border-box;
  width: 100%;
  max-width: 1080px;
  margin: 1.5rem auto;
  padding: clamp(1rem, 3vw, 1.5rem);
  color: var(--typiitest-text);
}
.typiitest-account *, .typiitest-account *::before, .typiitest-account *::after { box-sizing: border-box; }
.typiitest-panel, .typiitest-class-card {
  margin: 1rem 0;
  padding: clamp(1rem, 2.5vw, 1.25rem);
  background: var(--typiitest-bg);
  border: 1px solid var(--typiitest-border);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}
.typiitest-form { display: grid; gap: 0.85rem; }
.typiitest-form label { display: grid; gap: 0.35rem; font-weight: 700; }
.typiitest-form input, .typiitest-form textarea, .typiitest-form select {
  width: 100%;
  min-height: 2.6rem;
  padding: 0.65rem 0.75rem;
  color: var(--typiitest-text);
  background: #fff;
  border: 1px solid var(--typiitest-border);
  border-radius: 12px;
  font: inherit;
}
.typiitest-form textarea { min-height: 5rem; resize: vertical; }
.typiitest-form--inline { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: end; margin-top: 0.9rem; }
.typiitest-form--inline button { justify-self: start; }
.typiitest-form--compact { display: inline-grid; grid-auto-flow: column; gap: 0.45rem; align-items: center; margin: 0.15rem 0; }
.typiitest-form--compact select { min-width: 11rem; }
.typiitest__button--secondary { background: #475569; }
.typiitest__button--secondary:hover { background: #334155; }
.typiitest-notice { margin: 0 0 1rem; padding: 0.8rem 1rem; border-radius: 12px; font-weight: 700; }
.typiitest-notice--success { color: #166534; background: #dcfce7; }
.typiitest-notice--error { color: #991b1b; background: #fee2e2; }
.typiitest-muted { color: var(--typiitest-muted); }
.typiitest-stat-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; }
.typiitest-stat { padding: 1rem; text-align: center; background: var(--typiitest-surface); border: 1px solid var(--typiitest-border); border-radius: 14px; }
.typiitest-stat strong { display: block; font-size: clamp(1.6rem, 5vw, 2.3rem); line-height: 1; }
.typiitest-stat span { display: block; margin-top: 0.35rem; color: var(--typiitest-muted); font-size: 0.85rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.04em; }
.typiitest-class-card__header { display: flex; gap: 1rem; justify-content: space-between; align-items: flex-start; }
.typiitest-class-card h4 { margin: 0; }
.typiitest-join-code code { display: inline-block; padding: 0.25rem 0.45rem; background: #eff6ff; border: 1px solid #bfdbfe; border-radius: 8px; font-weight: 800; letter-spacing: 0.08em; }
.typiitest-class-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.75rem; }
.typiitest-roster { margin-top: 1rem; }
.typiitest-roster-table-wrap { width: 100%; overflow-x: auto; }
.typiitest-roster-table { width: 100%; min-width: 720px; border-collapse: collapse; }
.typiitest-roster-table th, .typiitest-roster-table td { padding: 0.65rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--typiitest-border); }
.typiitest-roster-table th { background: var(--typiitest-surface); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; }
.typiitest-student-class-list { display: grid; gap: 0.5rem; padding-left: 1.25rem; }
@media (max-width: 720px) {
  .typiitest-account { padding: 0.75rem; }
  .typiitest-stat-grid, .typiitest-form--inline { grid-template-columns: 1fr; }
  .typiitest-class-card__header { display: block; }
  .typiitest-form--compact { display: grid; grid-auto-flow: row; width: 100%; }
  .typiitest-form--compact .typiitest__button, .typiitest-form--compact select { width: 100%; }
  .typiitest-roster-table { min-width: 620px; }
}
@media (prefers-color-scheme: dark) {
  .typiitest-account { --typiitest-bg: #0f172a; --typiitest-surface: #111827; --typiitest-text: #f9fafb; --typiitest-muted: #cbd5e1; --typiitest-border: #334155; }
  .typiitest-form input, .typiitest-form textarea, .typiitest-form select { background: #020617; }
  .typiitest-join-code code { color: #dbeafe; background: #1e3a8a; border-color: #3b82f6; }
}

/* Teacher Edition Phase 3: Student Progress & Results */
.typiitest-progress,
.typiitest-class-progress {
  margin-top: 1.25rem;
}

.typiitest-progress-filter {
  align-items: end;
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(4, minmax(130px, 1fr)) auto;
  margin: 1rem 0;
}

.typiitest-form--inline label {
  display: grid;
  gap: 0.35rem;
}

.typiitest-form--inline input,
.typiitest-form--inline select {
  width: 100%;
}

.typiitest-stat-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  margin: 1rem 0;
}

.typiitest-stat {
  background: #f8fbff;
  border: 1px solid #dbeafe;
  border-radius: 14px;
  padding: 0.9rem;
}

.typiitest-stat strong {
  color: #0f172a;
  display: block;
  font-size: 1.35rem;
  line-height: 1.1;
}

.typiitest-stat span {
  color: #475569;
  display: block;
  font-size: 0.86rem;
  margin-top: 0.25rem;
}

.typiitest-results-table th,
.typiitest-results-table td {
  white-space: nowrap;
}

.typiitest-class-progress {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 16px;
  padding: 1rem;
}

.typiitest-class-progress h5 {
  margin-top: 0;
}

@media (max-width: 760px) {
  .typiitest-progress-filter {
    grid-template-columns: 1fr;
  }

  .typiitest-stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .typiitest-results-table {
    min-width: 720px;
  }
}

@media (max-width: 480px) {
  .typiitest-stat-grid {
    grid-template-columns: 1fr;
  }
}

/* Phase 4: Teacher Analytics & Reporting */
.typiitest-dashboard--reports .typiitest-panel,
.typiitest-analytics-overview,
.typiitest-student-performance,
.typiitest-class-performance,
.typiitest-report-filters {
	margin-block: 1.25rem;
}
.typiitest-stat-grid--analytics {
	grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}
.typiitest-insight-list {
	background: #f8fafc;
	border: 1px solid #e2e8f0;
	border-radius: 12px;
	padding: 1rem;
	margin-top: 1rem;
}
.typiitest-insight-list p {
	margin: .35rem 0;
}
.typiitest-export-actions {
	display: flex;
	flex-wrap: wrap;
	gap: .75rem;
	align-items: center;
	margin: 1rem 0;
}
.typiitest-report-card-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 1rem;
}
.typiitest-report-card {
	border: 1px solid #dbe4f0;
	border-radius: 14px;
	background: #fff;
	padding: 1rem;
	box-shadow: 0 6px 18px rgba(15, 23, 42, .06);
}
.typiitest-report-card h4 {
	margin-top: 0;
}
.typiitest-report-table th,
.typiitest-report-table td {
	white-space: nowrap;
}
.typiitest-report-filter select,
.typiitest-report-filter input[type="date"] {
	min-width: 150px;
}
@media (max-width: 760px) {
	.typiitest-report-card-grid {
		grid-template-columns: 1fr;
	}
	.typiitest-export-actions .typiitest__button {
		width: 100%;
		text-align: center;
	}
	.typiitest-report-filter label {
		width: 100%;
	}
	.typiitest-report-filter select,
	.typiitest-report-filter input[type="date"] {
		width: 100%;
	}
}

/* Product hardening: accessible focus and report usability */
.typiitest-account a:focus-visible,
.typiitest-account button:focus-visible,
.typiitest-account input:focus-visible,
.typiitest-account select:focus-visible,
.typiitest-account textarea:focus-visible {
	outline: 3px solid #2563eb;
	outline-offset: 3px;
}
.typiitest-report-filters .typiitest-muted {
	margin-top: -.25rem;
}
.typiitest-report-table caption,
.typiitest-roster-table caption {
	text-align: left;
	font-weight: 700;
	padding: .5rem 0;
}

/* Product hardening: accessible focus and report usability */
.typiitest-account a:focus-visible,
.typiitest-account button:focus-visible,
.typiitest-account input:focus-visible,
.typiitest-account select:focus-visible,
.typiitest-account textarea:focus-visible {
	outline: 3px solid #2563eb;
	outline-offset: 3px;
}
.typiitest-report-filters .typiitest-muted {
	margin-top: -.25rem;
}
.typiitest-report-table caption,
.typiitest-roster-table caption {
	text-align: left;
	font-weight: 700;
	padding: .5rem 0;
}