:root {
  color-scheme: light;
  --bg: #f5f7f4;
  --surface: #ffffff;
  --surface-2: #eef4f0;
  --ink: #17201d;
  --muted: #5b6862;
  --line: #d7dfda;
  --primary: #1f7a5a;
  --primary-dark: #105a41;
  --accent: #b75d38;
  --accent-soft: #f7e8df;
  --blue: #2f6597;
  --danger: #a63b3b;
  --success: #2e7a46;
  --shadow: 0 14px 36px rgba(28, 46, 38, 0.1);
  --radius: 8px;
  font-family: Arial, "Noto Sans Thai", "Noto Sans Lao", "Leelawadee UI", "Lao UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(31, 122, 90, 0.08), transparent 320px),
    var(--bg);
}

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

button,
input,
select,
textarea,
a {
  outline-offset: 3px;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(47, 101, 151, 0.45);
}

button,
select {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

a {
  color: var(--primary-dark);
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0.25rem;
  font-size: clamp(1.6rem, 2.4vw, 2.35rem);
  line-height: 1.12;
}

h2 {
  font-size: 1.45rem;
  line-height: 1.22;
}

h3 {
  font-size: 1.1rem;
}

p {
  color: var(--muted);
  line-height: 1.65;
}

pre {
  margin: 0;
  padding: 1rem;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
  line-height: 1.7;
}

label {
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.92rem;
}

input,
select,
textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.7rem 0.8rem;
  color: var(--ink);
  background: #fff;
}

textarea {
  min-height: 7rem;
  resize: vertical;
}

.noscript {
  max-width: 720px;
  margin: 4rem auto;
  padding: 2rem;
  background: var(--surface);
}

.login-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 440px);
  gap: clamp(1rem, 4vw, 3rem);
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 3rem);
}

.login-visual {
  display: grid;
  gap: 1.4rem;
}

.login-visual h1 {
  font-size: clamp(2.1rem, 6vw, 4.8rem);
  max-width: 9ch;
}

.login-panel,
.surface,
.quiz-card,
.flashcard,
.practice-card,
.dictionary-card,
.grammar-card,
.source-card,
.level-card,
.metric-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.login-panel {
  padding: clamp(1.1rem, 3vw, 2rem);
}

.login-links {
  margin-top: 1rem;
}

.stack {
  display: grid;
  gap: 1rem;
}

.panel-heading {
  margin-bottom: 1.5rem;
}

.eyebrow {
  margin-bottom: 0.35rem;
  color: var(--primary-dark);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.study-asset {
  width: min(100%, 680px);
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.study-asset.small {
  width: min(32vw, 320px);
  min-width: 220px;
}

.role-picker {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  border: 0;
}

.role-picker legend {
  grid-column: 1 / -1;
  margin-bottom: 0.35rem;
  color: var(--muted);
}

.role-picker label {
  position: relative;
}

.role-picker input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.role-picker span {
  display: grid;
  min-height: 46px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  font-weight: 700;
}

.role-picker input:checked + span {
  border-color: var(--primary);
  background: var(--surface-2);
}

.form-error {
  margin: 0;
  color: var(--danger);
  font-weight: 700;
}

.success-message {
  margin: 0;
  color: var(--success);
  font-weight: 700;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 264px minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 1rem;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(12px);
}

.brand {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1rem;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: var(--radius);
  color: #fff;
  background: var(--primary);
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
  overflow-wrap: anywhere;
}

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

.sidebar nav {
  display: grid;
  gap: 0.25rem;
}

.sidebar nav a {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: 0.6rem;
  align-items: center;
  min-height: 38px;
  padding: 0.45rem 0.55rem;
  border-radius: var(--radius);
  color: var(--muted);
  text-decoration: none;
}

.sidebar nav a.active,
.sidebar nav a:hover {
  color: var(--ink);
  background: var(--surface-2);
}

.nav-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--line);
}

.active .nav-dot {
  background: var(--primary);
}

.content-shell {
  min-width: 0;
  padding: 1.1rem clamp(1rem, 3vw, 2rem) 2rem;
}

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

.topbar-actions,
.button-row,
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

.topbar-actions {
  justify-content: flex-end;
}

.compact-select {
  min-width: 160px;
}

.compact-select span {
  font-size: 0.78rem;
}

.review-banner {
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: #5f321f;
  line-height: 1.5;
}

.page-content {
  display: grid;
  gap: 1rem;
  padding-bottom: 4rem;
}

.page-content > *,
.surface,
.responsive-table {
  min-width: 0;
}

.primary-action,
.secondary-action,
.ghost-button,
.success-button,
.danger-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.65rem 0.9rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}

.primary-action {
  color: #fff;
  background: var(--primary);
}

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

.secondary-action,
.ghost-button {
  color: var(--ink);
  border-color: var(--line);
  background: #fff;
}

.secondary-action:hover,
.ghost-button:hover {
  background: var(--surface-2);
}

.success-button {
  color: #fff;
  background: var(--success);
}

.danger-button {
  color: #fff;
  background: var(--danger);
}

.dashboard-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: clamp(1rem, 3vw, 1.5rem);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(31, 122, 90, 0.14), rgba(47, 101, 151, 0.09)),
    var(--surface);
  border: 1px solid var(--line);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.75rem;
}

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

.metric-card {
  display: grid;
  gap: 0.35rem;
  padding: 1rem;
  box-shadow: none;
}

.metric-card span {
  color: var(--muted);
  font-size: 0.86rem;
}

.metric-card strong {
  font-size: 1.6rem;
}

.level-grid,
.dictionary-grid,
.grammar-grid,
.practice-grid,
.source-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1rem;
}

.level-card,
.dictionary-card,
.grammar-card,
.source-card,
.practice-card {
  display: grid;
  gap: 0.85rem;
  align-content: start;
  padding: 1rem;
}

.card-row {
  display: flex;
  gap: 1rem;
  align-items: start;
  justify-content: space-between;
}

.progress-ring {
  --angle: calc(var(--pct) * 3.6deg);
  display: grid;
  width: 58px;
  height: 58px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, #fff 58%, transparent 60%),
    conic-gradient(var(--primary) var(--angle), var(--line) 0);
  color: var(--primary-dark);
  font-size: 0.85rem;
  font-weight: 800;
}

.tag-list,
.topic-grid,
.word-chip-grid,
.support-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag-list span,
.topic-grid span,
.support-grid span,
.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.25;
}

.surface {
  padding: 1rem;
}

.two-column,
.content-grid,
.lesson-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.7fr);
  gap: 1rem;
}

.draft-form,
.settings-form,
.user-form,
.reset-password-form {
  display: grid;
  gap: 0.8rem;
}

.user-form {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: end;
}

.user-form .button-row,
.checkbox-label {
  grid-column: 1 / -1;
}

.checkbox-label {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.checkbox-label input {
  width: 20px;
  min-height: 20px;
}

.one-time-password {
  display: grid;
  gap: 0.65rem;
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent-soft);
}

.one-time-password code {
  display: block;
  overflow-wrap: anywhere;
  border-radius: var(--radius);
  padding: 0.8rem;
  background: #fff;
  color: var(--ink);
  font-size: 1rem;
}

.responsive-table {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
}

.user-table {
  width: 100%;
  min-width: 920px;
  border-collapse: collapse;
}

.user-table th,
.user-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.user-table th {
  color: var(--muted);
  font-size: 0.84rem;
}

.user-actions {
  display: grid;
  gap: 0.45rem;
  min-width: 220px;
}

.reset-password-form {
  margin: 0.45rem 0;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.draft-list {
  display: grid;
  gap: 0.7rem;
}

.draft-list article,
.draft-row,
.score-row,
.lesson-summary,
.coverage-row {
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.coverage-list {
  display: grid;
  gap: 0.65rem;
}

.assistant-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.42fr);
  gap: 1rem;
  align-items: start;
}

.assistant-panel,
.assistant-side,
.assistant-composer,
.assistant-prompts,
.assistant-plan {
  display: grid;
  gap: 1rem;
}

.assistant-chat {
  display: grid;
  gap: 0.8rem;
  min-height: 320px;
  max-height: min(62vh, 620px);
  overflow-y: auto;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
}

.assistant-empty {
  align-self: center;
  max-width: 46rem;
}

.assistant-message {
  display: grid;
  gap: 0.35rem;
  width: min(100%, 44rem);
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.assistant-message.user {
  justify-self: end;
  border-color: rgba(47, 101, 151, 0.24);
  background: #edf5fb;
}

.assistant-message.assistant {
  border-color: rgba(31, 122, 90, 0.22);
  background: #f2f8f4;
}

.assistant-message p {
  margin: 0;
  color: var(--ink);
}

.assistant-composer textarea {
  min-height: 104px;
}

.assistant-side .metric-grid.compact {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.support-copy {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.course-hero {
  --level-accent: var(--primary);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.38fr);
  gap: 1rem;
  align-items: stretch;
  padding: 1.2rem;
  border: 1px solid color-mix(in srgb, var(--level-accent) 24%, var(--line));
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--level-accent) 12%, #fff), #fff 58%),
    var(--surface);
  box-shadow: var(--shadow);
}

.hsk-accent-1 { --level-accent: #1f7a5a; }
.hsk-accent-2 { --level-accent: #2f6597; }
.hsk-accent-3 { --level-accent: #83631a; }
.hsk-accent-4 { --level-accent: #8d4d7f; }
.hsk-accent-5 { --level-accent: #9b4731; }

.course-hero-main,
.course-hero-panel,
.course-plan-card,
.current-lesson-card,
.skill-progress-card,
.review-area-card {
  display: grid;
  gap: 0.85rem;
}

.course-hero-main h2 {
  margin-bottom: 0;
  color: var(--ink);
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.02;
}

.course-hero-main p {
  max-width: 68ch;
  font-size: 1rem;
}

.course-hero-panel {
  align-content: start;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
}

.course-hero-panel .progress-ring {
  width: 78px;
  height: 78px;
  background:
    radial-gradient(circle at center, #fff 58%, transparent 60%),
    conic-gradient(var(--level-accent) var(--angle), var(--line) 0);
}

.course-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0;
}

.course-hero-stats div,
.unit-card-metrics .metric,
.lesson-status-summary .metric {
  min-width: 0;
  padding: 0.65rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.course-hero-stats dt {
  color: var(--muted);
  font-size: 0.8rem;
}

.course-hero-stats dd {
  margin: 0.2rem 0 0;
  color: var(--ink);
  font-size: 1.35rem;
  font-weight: 800;
}

.course-workbench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.56fr);
  gap: 1rem;
}

.today-plan-list {
  display: grid;
  gap: 0.65rem;
}

.today-plan-item {
  display: grid;
  gap: 0.25rem;
  width: 100%;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  text-align: left;
  transition: border-color 140ms ease, transform 140ms ease;
}

.today-plan-item:hover {
  border-color: var(--primary);
  transform: translateY(-1px);
}

.today-plan-item span {
  color: var(--muted);
  font-size: 0.9rem;
}

.current-lesson-card .lesson-summary {
  margin-bottom: 0;
}

.lesson-status-summary,
.unit-card-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

.course-plan {
  display: grid;
  gap: 1rem;
}

.hours-badge {
  display: inline-grid;
  min-height: 44px;
  place-items: center;
  border-radius: var(--radius);
  padding: 0.65rem 0.8rem;
  color: #fff;
  background: var(--primary);
}

.course-unit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 1rem;
}

.course-unit {
  display: grid;
  gap: 0.7rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.unit-card-head {
  display: grid;
  gap: 0.45rem;
}

.unit-card-head h4 {
  margin: 0;
}

.course-unit details {
  border-top: 1px solid var(--line);
  padding-top: 0.65rem;
}

.course-unit summary {
  min-height: 40px;
  color: var(--primary-dark);
  font-weight: 700;
  cursor: pointer;
}

.course-unit ol {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding-left: 1.25rem;
}

.course-unit li {
  color: var(--muted);
  line-height: 1.5;
}

.course-unit li strong,
.course-unit li span,
.course-unit li small {
  display: block;
}

.course-unit li strong {
  color: var(--ink);
}

.coverage-row {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.7rem;
  align-items: center;
}

.level-reader {
  display: grid;
  gap: 1rem;
}

.compact-word-list {
  display: grid;
  gap: 0.45rem;
  max-height: 540px;
  overflow: auto;
}

.compact-word-list button,
.lesson-list button {
  width: 100%;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.7rem;
  background: #fff;
}

.compact-word-list button span,
.lesson-list button span {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
}

.lesson-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.7rem;
  align-items: center;
  margin-bottom: 0.75rem;
}

.lesson-summary.featured {
  border-color: rgba(31, 122, 90, 0.32);
  background: #f6fbf7;
}

.skill-row {
  display: grid;
  grid-template-columns: minmax(90px, 1fr) minmax(120px, 2fr) 3rem;
  gap: 0.65rem;
  align-items: center;
}

.skill-row progress {
  width: 100%;
  min-width: 0;
  height: 12px;
  accent-color: var(--primary);
}

.review-area-card .metric {
  margin-bottom: 0.55rem;
}

@media (prefers-reduced-motion: reduce) {
  .today-plan-item {
    transition: none;
  }

  .today-plan-item:hover {
    transform: none;
  }
}

.lesson-layout {
  grid-template-columns: 280px minmax(0, 1fr);
  align-items: start;
}

.lesson-list {
  position: sticky;
  top: 1rem;
  display: grid;
  gap: 0.45rem;
}

.lesson-list button.active {
  border-color: var(--primary);
  background: var(--surface-2);
}

.lesson-reader {
  display: grid;
  gap: 1rem;
}

.support-copy,
.proper-note {
  color: #41504a;
}

.reading-box,
.info-block,
.example-card {
  display: grid;
  gap: 0.7rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
}

.review-placeholder {
  border-style: dashed;
  background: var(--accent-soft);
}

.review-placeholder strong {
  color: #5f321f;
}

.hanzi-line {
  color: var(--ink);
  font-size: 1.35rem;
  line-height: 1.45;
}

.word-chip {
  display: grid;
  min-width: 120px;
  gap: 0.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.7rem;
  background: #fff;
  text-align: left;
}

.word-chip strong,
.dictionary-card h3 {
  font-size: 2rem;
  line-height: 1.05;
}

.filter-bar {
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) repeat(3, minmax(140px, 1fr));
  gap: 0.8rem;
}

.flashcard-filter-bar {
  grid-template-columns: repeat(2, minmax(180px, 1fr));
}

.quiz-bank-meta {
  display: flex;
  min-width: 0;
  gap: 0.6rem;
  align-items: end;
  justify-content: space-between;
  flex-wrap: wrap;
}

.quiz-progress {
  margin: 0;
  color: var(--muted);
  font-weight: 700;
}

.boss-ai-answer pre {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font: inherit;
}

.difficulty {
  color: var(--accent);
  font-size: 1.2rem;
  letter-spacing: 2px;
}

.review-meta {
  display: grid;
  gap: 0.3rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.dictionary-summary {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.queue-item {
  width: 100%;
  margin-bottom: 0.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.7rem;
  background: #fff;
  text-align: left;
}

.dictionary-card details,
.practice-card details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.7rem;
  background: #fff;
}

.flashcard-stage {
  display: grid;
  justify-items: center;
  gap: 1rem;
}

.flashcard {
  width: min(100%, 720px);
  min-height: 360px;
  display: grid;
  place-items: center;
  gap: 1rem;
  padding: clamp(1rem, 4vw, 2rem);
  text-align: center;
}

.flash-front {
  font-size: clamp(2.2rem, 8vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  overflow-wrap: anywhere;
}

.flash-back {
  display: grid;
  gap: 0.4rem;
}

.centered {
  justify-content: center;
}

.quiz-card {
  display: grid;
  gap: 1rem;
  max-width: 840px;
  padding: clamp(1rem, 3vw, 1.4rem);
}

.choice-grid {
  display: grid;
  gap: 0.6rem;
}

.choice {
  width: 100%;
  min-height: 52px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.75rem;
  background: #fff;
  text-align: left;
}

.choice.selected {
  border-color: var(--blue);
  background: #e9f1f9;
}

.choice.correct {
  border-color: var(--success);
  background: #e8f5ec;
}

.choice.wrong {
  border-color: var(--danger);
  background: #f8e9e9;
}

.feedback {
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.feedback.ok {
  background: #e8f5ec;
}

.feedback.not-ok {
  background: #f8e9e9;
}

.practice-card {
  min-width: 0;
}

.audio-box {
  display: grid;
  gap: 0.8rem;
  padding: 1rem;
  border: 1px dashed var(--blue);
  border-radius: var(--radius);
  background: #edf5fc;
  color: #214b70;
  font-weight: 700;
}

.source-link-list {
  display: grid;
  gap: 0.5rem;
}

.token-bank,
.answer-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  min-height: 52px;
  padding: 0.6rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.token-bank button,
.answer-line span {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.5rem 0.65rem;
  background: var(--surface-2);
}

.progress-row {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr) 52px;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 0.75rem;
}

.bar {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line);
}

.bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--primary);
}

.score-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.6rem;
}

.settings-panel {
  max-width: 720px;
  display: grid;
  gap: 1rem;
}

.public-access-page {
  min-height: 100vh;
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 3rem);
  display: grid;
  align-content: start;
  gap: 1rem;
}

.public-access-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.public-brand {
  margin-bottom: 0;
}

.access-panel {
  display: grid;
  gap: 1rem;
  padding: clamp(1rem, 3vw, 1.5rem);
}

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

.access-card {
  min-width: 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.url-line {
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--ink);
  font-family: Consolas, "Courier New", monospace;
  overflow-wrap: anywhere;
}

.device-checklist {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--muted);
}

.device-checklist li {
  margin-bottom: 0.55rem;
  line-height: 1.55;
}

.source-card a {
  overflow-wrap: anywhere;
}

.mobile-nav {
  display: none;
}

.focus-pulse {
  animation: pulse 0.9s ease-out;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(31, 122, 90, 0.45);
  }
  100% {
    box-shadow: 0 0 0 14px rgba(31, 122, 90, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 1120px) {
  .metric-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (max-width: 860px) {
  .login-page,
  .app-shell,
  .two-column,
  .content-grid,
  .lesson-layout,
  .assistant-layout,
  .dashboard-hero,
  .course-hero,
  .course-workbench,
  .access-grid {
    grid-template-columns: 1fr;
  }

  .login-page {
    align-items: start;
  }

  .sidebar {
    display: none;
  }

  .content-shell {
    padding-bottom: 5.5rem;
  }

  .topbar {
    display: grid;
  }

  .topbar-actions {
    justify-content: start;
  }

  .lesson-list {
    position: static;
  }

  .study-asset.small {
    width: 100%;
    min-width: 0;
  }

  .mobile-nav {
    position: fixed;
    z-index: 20;
    right: 0.75rem;
    bottom: 0.75rem;
    left: 0.75rem;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 0.25rem;
    padding: 0.45rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
  }

  .mobile-nav a {
    display: grid;
    min-height: 42px;
    place-items: center;
    border-radius: var(--radius);
    color: var(--muted);
    text-decoration: none;
    font-size: 0.78rem;
    font-weight: 700;
  }

  .mobile-nav a.active {
    color: #fff;
    background: var(--primary);
  }
}

@media (max-width: 640px) {
  .metric-grid,
  .metric-grid.compact,
  .assistant-side .metric-grid.compact,
  .course-hero-stats,
  .lesson-status-summary,
  .unit-card-metrics,
  .filter-bar {
    grid-template-columns: 1fr;
  }

  .assistant-chat {
    max-height: none;
  }

  .lesson-summary {
    grid-template-columns: 1fr;
  }

  .progress-row {
    grid-template-columns: 1fr;
  }

  .skill-row {
    grid-template-columns: 1fr;
  }

  .dictionary-summary,
  .coverage-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .role-picker {
    grid-template-columns: 1fr;
  }

  .user-form {
    grid-template-columns: 1fr;
  }

  .user-table-shell {
    padding-inline: 0.65rem;
  }

  .user-table {
    min-width: 760px;
  }

  .flashcard {
    min-height: 300px;
  }
}