@layer app {
  .dashboard-playful .app-main .course-overview { padding-top: 8px; }
  .course-overview .back-link { color: var(--ink); font-size: .8rem; }
  .course-overview .course-hero { margin-block: 24px 30px; }
  .course-overview-emoji { width: 64px; height: 64px; font-size: 48px; flex-shrink: 0; }
  button.course-overview-emoji { border: 0; padding: 0; border-radius: 12px; background: transparent; cursor: pointer; }
  .course-emoji-picker { position: fixed; inset: auto; max-width: calc(100vw - 32px); margin: 0; padding: 20px; border: 1px solid var(--line); border-radius: 20px; background: var(--white); color: var(--ink); box-shadow: 0 12px 40px #0002; }
  .course-emoji-options { display: grid; grid-template-columns: repeat(5, 44px); gap: 4px; }
  .course-emoji-options button { width: 44px; height: 44px; border: 0; border-radius: 10px; background: transparent; font-size: 28px; cursor: pointer; }
  button.course-overview-emoji:hover, .course-emoji-options button:hover, .course-emoji-options button[aria-pressed="true"] { background: #d6fc76; }
  button.course-overview-emoji:focus-visible, .course-emoji-options button:focus-visible { outline: 3px solid #668619; outline-offset: 2px; }
  .course-overview .course-hero-text { flex: 1; }
  .course-overview .course-hero-text h1 { overflow-wrap: anywhere; }
  .course-overview .course-hero-text p { max-width: 65ch; margin-top: 8px; font-size: .85rem; }
  .course-overview .course-hero-actions { width: auto; margin: 0; flex-shrink: 0; }
  .course-overview .course-hero-actions a { color: var(--ink); }
  .course-overview-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); align-items: stretch; gap: 24px; }
  .course-lessons-panel, .course-progress-panel, .course-info-panel { min-width: 0; padding: 28px; border-radius: 36px; background: white; }
  .course-overview .course-section-heading { gap: 16px; flex-wrap: wrap; }
  .course-overview .course-section-heading h2, .course-overview .course-materials-heading-link { font-size: 24px; letter-spacing: -.045em; }
  .course-overview .course-section-heading > div { flex-wrap: wrap; }
  .course-overview .course-section-heading span { font-size: .75rem; font-weight: 500; }
  .course-overview .course-section-heading .course-panel-symbol { font-size: 30px; color: var(--ink); }
  .course-next-lesson { margin-top: 24px; padding: 28px; border-radius: 26px; background: #f1f5e9; }
  .course-next-lesson .eyebrow { font-size: .7rem; text-transform: none; letter-spacing: 0; color: #505943; }
  .course-next-lesson h3 { margin-top: 14px; font-size: clamp(24px, 2.5vw, 32px); line-height: 1.15; letter-spacing: -.045em; overflow-wrap: anywhere; }
  .course-next-lesson > p:not(.eyebrow) { margin-top: 12px; font-size: .82rem; line-height: 1.65; max-width: 45ch; }
  .course-next-lesson .button { margin-top: 22px; gap: 28px; font-size: .82rem; }
  .course-list-label { margin-block: 24px 6px; font-size: .72rem; }
  .course-lesson-row { display: flex; align-items: center; gap: 14px; padding-block: 16px; border-bottom: 1px solid var(--line); }
  .course-lesson-number { display: grid; place-items: center; flex-shrink: 0; width: 38px; height: 38px; border-radius: 50%; background: #f5f5f2; font-size: .75rem; font-variant-numeric: tabular-nums; }
  .course-lesson-row > div { flex: 1; min-width: 0; }
  .course-lesson-row h3 { font-size: .88rem; line-height: 1.4; letter-spacing: -.02em; overflow-wrap: anywhere; }
  .course-lesson-row p { margin-top: 4px; font-size: .7rem; }
  .course-lesson-open { display: grid; place-items: center; width: 38px; height: 38px; border: 0; border-radius: 50%; background: #f5f5f2; color: var(--ink); font-size: 20px; cursor: pointer; transition: background 180ms ease; }
  .course-lesson-open:hover { background: #d6fc76; }
  .course-lesson-open:focus-visible { outline: 3px solid #668619; outline-offset: 3px; }
  .course-overview-link { display: inline-block; margin-top: 20px; color: var(--ink); font-size: .78rem; font-weight: 700; }
  .course-overview-link:hover { text-decoration: underline; }
  .course-overview-side { display: grid; align-content: start; gap: 24px; min-width: 0; }
  .course-progress-panel { background: #d6fc76; border-radius: 36px 42px 38px 34px; }
  .course-progress-panel > p { margin-top: 10px; color: #414b30; font-size: .8rem; }
  .course-progress-bar { margin-top: 22px; font-size: .73rem; }
  .course-progress-bar progress { display: block; width: 100%; height: 7px; margin-top: 10px; border: 0; border-radius: 10px; overflow: hidden; background: #b5d463; accent-color: #151515; }
  .course-progress-bar progress::-webkit-progress-bar { background: #b5d463; }
  .course-progress-bar progress::-webkit-progress-value { background: #151515; border-radius: 10px; }
  .course-progress-bar progress::-moz-progress-bar { background: #151515; }
  .course-progress-stats { margin-top: 22px; display: grid; gap: 18px; }
  .course-progress-stats dt { font-size: .73rem; color: #414b30; }
  .course-progress-stats dd { margin: 4px 0 0; font-size: 1.5rem; font-weight: 700; letter-spacing: -.03em; }
  .course-progress-panel .button { margin-top: 24px; width: 100%; font-size: .8rem; }
  .course-info-panel { background: #eaf4ff; }
  .course-info-panel .course-overview-link { margin-top: 0; }
  .course-info-panel dl { margin-block: 24px; display: grid; gap: 10px; }
  .course-info-panel dl > div { padding: 14px 16px; border: 1px solid rgb(255 255 255 / 75%); border-radius: 18px; background: rgb(255 255 255 / 58%); }
  .course-info-panel dt { color: var(--muted); font-size: .72rem; margin-bottom: 5px; }
  .course-info-panel dt span { display: inline-block; width: 1.4em; }
  .course-info-panel dd { margin: 0; font-size: .85rem; line-height: 1.5; overflow-wrap: anywhere; }
  .course-info-panel dd small { display: block; margin-top: 4px; font-size: .7rem; color: var(--muted); }
  .course-info-panel > .course-overview-link { display: inline-flex; align-items: center; gap: 8px; padding: 11px 14px; border-radius: 999px; background: #d6fc76; transition: transform 160ms ease; }
  .course-info-panel > .course-overview-link:hover { transform: translateY(-1px); text-decoration: none; }
  .dashboard-playful .app-main .course-overview .course-materials { margin-top: 0; padding: 28px; border-radius: 36px; }
  .course-overview .course-material-preview { grid-auto-columns: 112px; gap: 16px; margin-top: 24px; }
  .course-overview .course-material-preview:has(.course-materials-empty) { display: block; }
  .course-materials-empty { max-width: 60ch; padding-block: 12px; font-size: .85rem; }
  .course-overview .materials-file-picker:focus-within { outline: 3px solid #668619; outline-offset: 3px; }
  @media (max-width: 1100px) {
    .course-overview-grid { grid-template-columns: minmax(0, 1fr); }
  }
  @media (max-width: 600px) {
    .course-overview .course-hero { gap: 14px; margin-block: 20px 24px; }
    .course-overview-emoji { width: 48px; height: 48px; font-size: 36px; }
    .course-overview .course-hero-text { flex-basis: calc(100% - 62px); }
    .course-overview .course-hero-actions { margin-left: 62px; }
    .course-overview-grid, .course-overview-side { grid-template-columns: minmax(0, 1fr); gap: 18px; }
    .course-lessons-panel, .course-progress-panel, .course-info-panel, .dashboard-playful .app-main .course-overview .course-materials { padding: 22px; border-radius: 28px; }
    .course-next-lesson { padding: 22px; }
    .course-overview .course-materials .actions { gap: 8px; }
  }
  @media (prefers-reduced-motion: reduce) { .course-lesson-open, .course-info-panel > .course-overview-link { transition: none; } }
}