:root {
  color-scheme: light;
  --bg: #f6f7f4;
  --surface: #ffffff;
  --surface-strong: #f0f5f4;
  --ink: #17211f;
  --muted: #61706b;
  --line: #d9e2dd;
  --teal: #16746a;
  --teal-dark: #0f5e56;
  --wine: #9b2743;
  --gold: #c78b2b;
  --blue: #2c5f9e;
  --soft-blue: #e6eef9;
  --soft-wine: #f7e6eb;
  --soft-gold: #f8efd8;
  --shadow: 0 18px 55px rgba(23, 33, 31, 0.12);
  --radius: 8px;
  --progress: 0deg;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(230, 238, 249, 0.65), transparent 320px),
    var(--bg);
  color: var(--ink);
}

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

button {
  cursor: pointer;
}

img {
  display: block;
  max-width: 100%;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr);
  grid-template-rows: 72px minmax(0, 1fr);
}

.topbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--teal);
  color: white;
  font-weight: 800;
  letter-spacing: 0;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.1;
}

.brand small {
  color: var(--muted);
  margin-top: 4px;
  font-size: 0.82rem;
}

.topbar-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar {
  border-right: 1px solid var(--line);
  background: #fbfcfa;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
}

.nav-stack {
  display: grid;
  gap: 8px;
}

.nav-item {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  min-height: 46px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 12px;
  text-align: left;
}

.nav-item:hover,
.nav-item:focus-visible {
  border-color: var(--line);
  color: var(--ink);
  background: var(--surface);
}

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

.nav-icon {
  font-size: 0.72rem;
  color: currentColor;
  opacity: 0.7;
  min-width: 22px;
}

.sidebar-meter {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: var(--surface);
}

.sidebar-meter span {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--teal);
}

.sidebar-meter small,
.muted {
  color: var(--muted);
}

.workspace {
  min-width: 0;
  padding: 28px;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.55fr);
  gap: 18px;
  align-items: stretch;
}

.focus-panel,
.coach-panel,
.placement-panel,
.daily-plan-panel,
.review-queue-panel,
.weak-panel,
.stat-panel,
.planner-panel,
.level-map-section,
.lesson-panel,
.module-rail,
.practice-panel,
.exam-panel,
.exam-side > section,
.notebook-panel {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.today-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(310px, 0.9fr);
  gap: 18px;
  align-items: stretch;
}

.coach-panel {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 420px);
  min-height: 282px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(22, 116, 106, 0.12), rgba(44, 95, 158, 0.08)),
    var(--surface);
}

.coach-copy {
  padding: clamp(24px, 4vw, 42px);
  align-self: center;
}

.coach-scoreboard {
  border-left: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.68);
  display: grid;
  align-content: center;
  gap: 12px;
  padding: 24px;
}

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

.coach-stat strong {
  display: block;
  font-size: 2rem;
  color: var(--teal);
  line-height: 1;
}

.coach-stat span {
  display: block;
  color: var(--muted);
  margin-top: 6px;
  font-size: 0.9rem;
}

.placement-panel,
.daily-plan-panel,
.review-queue-panel,
.weak-panel {
  padding: 18px;
  box-shadow: none;
}

.daily-plan-panel {
  grid-row: span 2;
}

.daily-plan-list {
  display: grid;
  gap: 10px;
}

.daily-step {
  width: 100%;
  min-height: 108px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  color: var(--ink);
  padding: 14px;
  text-align: left;
}

.daily-step:hover,
.daily-step:focus-visible {
  border-color: var(--teal);
}

.daily-step.done {
  background: #e4f3ef;
  border-color: rgba(22, 116, 106, 0.4);
}

.daily-step span {
  grid-row: span 3;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 999px;
  background: var(--soft-blue);
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 850;
}

.daily-step.done span {
  background: var(--teal);
  color: white;
}

.daily-step strong,
.daily-step small,
.daily-step em {
  min-width: 0;
}

.daily-step small {
  color: var(--muted);
  line-height: 1.4;
}

.daily-step em {
  color: var(--wine);
  font-style: normal;
  font-weight: 800;
  font-size: 0.82rem;
}

.focus-panel {
  grid-column: 1 / 2;
  min-height: 328px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 42%);
  overflow: hidden;
}

.focus-copy {
  padding: clamp(24px, 4vw, 42px);
  align-self: center;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--wine);
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.8rem);
  line-height: 0.98;
  max-width: 820px;
}

h2 {
  font-size: 1.05rem;
}

.focus-text {
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.7;
  margin: 18px 0 0;
}

.focus-actions,
.lesson-actions,
.split-actions,
.response-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.focus-actions {
  margin-top: 26px;
}

.primary-button,
.secondary-button,
.danger-button {
  min-height: 42px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  padding: 0 15px;
  font-weight: 750;
}

.primary-button {
  background: var(--teal);
  color: white;
}

.primary-button:hover,
.primary-button:focus-visible {
  background: var(--teal-dark);
}

.secondary-button {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line);
}

.secondary-button:hover,
.secondary-button:focus-visible {
  border-color: var(--teal);
}

.danger-button {
  background: var(--soft-wine);
  color: #7d1f36;
  border-color: #e9bdc9;
}

.full-width {
  width: 100%;
}

.study-visual {
  margin: 0;
  min-height: 100%;
  position: relative;
  background: var(--surface-strong);
}

.study-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.stat-panel {
  grid-column: 2 / 3;
  padding: 24px;
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
  gap: 18px;
}

.progress-ring {
  width: 154px;
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at center, white 0 58%, transparent 59%),
    conic-gradient(var(--teal) var(--progress), var(--line) 0);
}

.progress-ring span {
  font-size: 2rem;
  font-weight: 850;
}

.planner-panel {
  grid-column: 1 / -1;
  padding: 22px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 16px;
}

.section-heading .eyebrow {
  margin-bottom: 6px;
}

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

.field {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.field.compact {
  grid-template-columns: auto minmax(86px, 1fr);
  align-items: center;
  gap: 8px;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  color: var(--ink);
}

input,
select {
  min-height: 42px;
  padding: 0 12px;
}

textarea {
  padding: 12px;
  resize: vertical;
  line-height: 1.55;
}

input:focus,
select:focus,
textarea:focus,
button:focus-visible {
  outline: 3px solid rgba(22, 116, 106, 0.22);
  outline-offset: 2px;
}

.plan-output {
  margin-top: 16px;
  padding: 14px 16px;
  border-left: 4px solid var(--gold);
  background: var(--soft-gold);
  border-radius: var(--radius);
  line-height: 1.55;
}

.level-map-section {
  margin-top: 18px;
  padding: 22px;
  box-shadow: none;
}

.level-map {
  display: grid;
  gap: 14px;
}

.level-track {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  gap: 14px;
  align-items: stretch;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.level-badge {
  border-radius: var(--radius);
  padding: 14px;
  color: white;
  min-height: 100%;
}

.level-badge strong,
.level-badge span {
  display: block;
}

.level-badge strong {
  font-size: 1.45rem;
}

.level-badge span {
  margin-top: 4px;
  font-size: 0.78rem;
  opacity: 0.86;
  line-height: 1.35;
}

.module-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.module-tile,
.module-button {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  color: var(--ink);
  text-align: left;
  padding: 13px;
}

.module-tile {
  min-height: 104px;
}

.module-tile:hover,
.module-tile:focus-visible,
.module-button:hover,
.module-button:focus-visible {
  border-color: var(--teal);
}

.module-tile.active,
.module-button.active {
  border-color: var(--teal);
  background: var(--surface-strong);
}

.module-tile.done {
  border-color: rgba(22, 116, 106, 0.35);
}

.module-tile strong,
.module-button strong {
  display: block;
  margin-bottom: 8px;
}

.module-tile small,
.module-button small {
  color: var(--muted);
  line-height: 1.45;
}

.lesson-layout {
  display: grid;
  grid-template-columns: minmax(230px, 300px) minmax(0, 1fr);
  gap: 18px;
}

.module-rail {
  padding: 18px;
  box-shadow: none;
  align-self: start;
  position: sticky;
  top: 100px;
}

.module-list {
  display: grid;
  gap: 8px;
}

.module-button {
  min-height: 74px;
}

.lesson-panel {
  padding: 24px;
  box-shadow: none;
}

.lesson-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.lesson-content-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.content-block {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  background: #fbfcfa;
}

.content-block.wide {
  grid-column: 1 / -1;
}

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

.vocab-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.vocab-item {
  display: grid;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: white;
}

.vocab-item strong {
  color: var(--teal-dark);
}

.vocab-item span {
  color: var(--muted);
  line-height: 1.4;
}

.vocab-item button {
  justify-self: start;
  min-height: 34px;
  padding: 0 10px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--soft-blue);
  color: var(--blue);
  font-weight: 750;
}

.activity-list {
  margin: 12px 0 0;
  padding-left: 22px;
  color: var(--muted);
  line-height: 1.7;
}

.phrase-line {
  font-size: 1.25rem;
  color: var(--ink);
}

.page-heading {
  align-items: flex-start;
  display: block;
}

.page-heading h1 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
}

.drill-grid,
.notebook-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.practice-panel,
.notebook-panel {
  padding: 18px;
  box-shadow: none;
}

.panel-heading,
.prompt-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.question-text {
  font-size: 1.2rem;
  line-height: 1.55;
}

.option-grid {
  display: grid;
  gap: 8px;
}

.option-button {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-height: 46px;
  padding: 10px 12px;
  background: white;
  color: var(--ink);
  text-align: left;
}

.option-button.correct {
  border-color: rgba(22, 116, 106, 0.55);
  background: #e4f3ef;
}

.option-button.incorrect {
  border-color: rgba(155, 39, 67, 0.55);
  background: var(--soft-wine);
}

.feedback {
  min-height: 28px;
  color: var(--muted);
  line-height: 1.55;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--soft-blue);
  color: var(--blue);
  font-weight: 800;
  font-size: 0.76rem;
}

.flashcard {
  width: 100%;
  min-height: 190px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(22, 116, 106, 0.09), transparent 52%),
    white;
  color: var(--ink);
  display: grid;
  place-items: center;
  gap: 12px;
  padding: 24px;
  text-align: center;
  margin-bottom: 12px;
}

.flashcard span {
  font-size: clamp(1.5rem, 4vw, 2.3rem);
  font-weight: 850;
}

.flashcard small {
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.4;
}

.large-input {
  margin: 8px 0 12px;
}

.builder-answer {
  min-height: 54px;
  border: 1px dashed var(--teal);
  border-radius: var(--radius);
  padding: 9px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
  background: var(--surface-strong);
}

.word-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.word-token {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 10px;
  background: white;
  color: var(--ink);
}

.word-token:disabled {
  opacity: 0.35;
}

.exam-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
  gap: 18px;
}

.exam-panel,
.exam-side > section {
  padding: 20px;
  box-shadow: none;
}

.exam-side {
  display: grid;
  gap: 18px;
  align-content: start;
}

.task-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.task-tab {
  min-height: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: white;
  color: var(--ink);
  padding: 0 14px;
  font-weight: 750;
}

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

.prompt-box {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: #fbfcfa;
}

.prompt-box h2 {
  font-size: 1.35rem;
  margin-bottom: 10px;
}

.prompt-box p {
  color: var(--muted);
  line-height: 1.7;
}

.connector-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 0;
  margin: 16px 0 0;
  list-style: none;
}

.connector-list li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: white;
  color: var(--teal-dark);
  font-weight: 750;
  font-size: 0.84rem;
}

.response-area {
  display: grid;
  gap: 8px;
  margin-top: 16px;
  color: var(--muted);
  font-weight: 750;
}

.response-footer {
  justify-content: space-between;
  margin-top: 10px;
  color: var(--muted);
}

.timer-display {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 850;
  margin: 12px 0;
  color: var(--wine);
}

.rubric-list {
  display: grid;
  gap: 14px;
}

.rubric-item {
  display: grid;
  gap: 8px;
}

.rubric-item label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-weight: 750;
}

.saved-list,
.notes-list,
.attempt-list {
  display: grid;
  gap: 10px;
}

.saved-empty {
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 14px;
  line-height: 1.5;
}

.saved-item,
.note-item,
.attempt-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: #fbfcfa;
  line-height: 1.45;
}

.saved-item strong,
.attempt-item strong {
  display: block;
  color: var(--ink);
}

.saved-item span,
.note-item,
.attempt-item span {
  color: var(--muted);
}

.notebook-panel textarea {
  margin: 8px 0 10px;
}

@media (max-width: 1060px) {
  .app-shell {
    grid-template-columns: 84px minmax(0, 1fr);
  }

  .sidebar {
    padding: 14px 10px;
  }

  .nav-item {
    justify-content: center;
    padding: 0;
  }

  .nav-item .nav-icon {
    display: none;
  }

  .nav-item {
    font-size: 0.76rem;
  }

  .sidebar-meter {
    display: none;
  }

  .dashboard-grid,
  .today-grid,
  .focus-panel,
  .coach-panel,
  .lesson-layout,
  .exam-layout {
    grid-template-columns: 1fr;
  }

  .coach-scoreboard {
    border-left: 0;
    border-top: 1px solid var(--line);
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .stat-panel {
    grid-column: 1 / -1;
  }

  .module-rail {
    position: static;
  }
}

@media (max-width: 760px) {
  .app-shell {
    display: block;
  }

  .topbar {
    position: static;
    align-items: flex-start;
    padding: 14px;
    flex-direction: column;
  }

  .topbar-controls {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 9;
    overflow-x: auto;
    background: rgba(255, 255, 255, 0.92);
  }

  .nav-stack {
    display: flex;
    min-width: max-content;
  }

  .nav-item {
    min-width: 92px;
    padding: 0 10px;
  }

  .workspace {
    padding: 16px;
  }

  .focus-panel {
    min-height: 0;
  }

  .coach-panel {
    min-height: 0;
  }

  .coach-scoreboard {
    grid-template-columns: 1fr;
  }

  .study-visual {
    min-height: 210px;
  }

  .planner-controls,
  .module-row,
  .lesson-content-grid,
  .vocab-grid,
  .drill-grid,
  .notebook-grid,
  .today-grid {
    grid-template-columns: 1fr;
  }

  .level-track {
    grid-template-columns: 1fr;
  }

  .lesson-header {
    display: grid;
  }
}