@layer app {
  .dashboard { max-width: 1180px; padding-top: 2.5rem; }
  .dashboard-header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; margin-bottom: 1.5rem; }
  .dashboard-header h1 { margin-top: 0.25rem; color: var(--ink); font-size: 2.25rem; letter-spacing: -0.035em; }
  .dashboard-tools { display: flex; flex: 0 1 23rem; align-items: center; justify-content: flex-end; gap: 0.75rem; }
  .dashboard-account-link { display: grid; flex: 0 0 auto; border-radius: 50%; place-items: center; }
  .dashboard-account-link .user-avatar { width: 2.75rem; height: 2.75rem; }
  .dashboard-attention { display: grid; grid-template-columns: minmax(12rem, 0.35fr) minmax(0, 1fr); gap: 2rem; margin-top: 1rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding-block: 1.25rem; }
  .dashboard-attention-heading h2 { color: var(--ink); font-size: 1rem; }
  .dashboard-attention-heading p { margin-top: 0.25rem; font-size: var(--type-caption); }
  .dashboard-attention-list { display: grid; }
  .dashboard-attention-item { display: flex; align-items: center; justify-content: space-between; gap: 1rem; border-bottom: 1px solid var(--line); padding-block: 0.75rem; }
  .dashboard-attention-item:first-child { padding-top: 0; }
  .dashboard-attention-item:last-child { border-bottom: 0; padding-bottom: 0; }
  .dashboard-attention-item strong, .dashboard-attention-item span { display: block; }
  .dashboard-attention-item strong { color: var(--ink); font-size: 0.88rem; }
  .dashboard-attention-item span { margin-top: 0.2rem; color: var(--muted); font-size: 0.78rem; }
  .dashboard-attention-item .link-button { font-size: var(--type-caption); }
  .dashboard-library-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; margin-top: 1rem; }
  .dashboard-panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
  .dashboard-panel-heading h2 { color: var(--ink); font-size: 1.1rem; letter-spacing: -0.025em; }
  .dashboard-panel-heading h1 { color: var(--ink); font-size: 1.5rem; letter-spacing: -0.025em; }
  .dashboard-panel-heading > div > p { max-width: 58ch; margin-top: 0.35rem; font-size: var(--type-support); }
  .dashboard-panel-heading a { font-size: var(--type-caption); }
  .dashboard-courses { margin-top: 1rem; }
  .home-empty { display: grid; justify-items: center; max-width: 46rem; margin: clamp(3rem, 9vh, 7rem) auto 0; text-align: center; }
  .home-empty-mark { display: grid; width: 4.5rem; height: 4.5rem; place-items: center; border-radius: 50%; background: var(--blue); color: var(--primary-hover); font-size: 2.5rem; font-weight: 700; line-height: 1; }
  .home-empty h2 { margin-top: 1.5rem; color: var(--ink); font-size: clamp(2.8rem, 6vw, 5rem); letter-spacing: -0.045em; }
  .home-empty p { margin-top: 1rem; color: var(--ink); font-size: 1.05rem; }
  .home-empty-action { width: fit-content; margin-top: 1.5rem; border-color: var(--ink); background: var(--ink); color: var(--white); }
  .home-empty-action:hover { border-color: var(--primary-hover); background: var(--primary-hover); color: var(--white); }
  .home-empty ul { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.5rem; margin-top: 2rem; }
  .home-empty li { border-radius: var(--radius-pill); background: var(--sidebar-background); padding: 0.45rem 0.8rem; color: var(--muted); font-size: 0.75rem; font-weight: 700; }
  .course-progress-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; margin-top: 1.25rem; }
  .course-progress-item { position: relative; display: flex; min-width: 0; height: 10rem; flex-direction: column; align-items: flex-start; border-radius: var(--radius); padding: 1rem; color: var(--ink); transition: transform 180ms cubic-bezier(.22, 1, .36, 1); }
  .course-progress-item--blue { background: var(--blue-dark); }
  .course-progress-item--gray { background: var(--sidebar-background); }
  .course-progress-item--lime { background: var(--progress); }
  .course-progress-item--empty { border: 1px dashed var(--line-strong); background: var(--white); }
  .course-progress-add { display: grid; width: 2.5rem; height: 2.5rem; place-items: center; border-radius: 50%; background: var(--blue); color: var(--ink); font-size: 1.5rem; font-weight: 700; line-height: 1; }
  .course-progress-item--empty .course-progress-copy small { max-width: 34ch; color: var(--muted); line-height: 1.4; }
  .course-progress-item:hover { transform: translateY(-2px); }
  .course-emoji { display: grid; place-items: center; width: 2.5rem; height: 2.5rem; flex-shrink: 0; font-size: 2rem; line-height: 1; }
  .course-progress-copy { display: flex; min-width: 0; flex: 1; flex-direction: column; margin-top: 1rem; }
  .course-progress-copy strong { overflow: hidden; color: var(--ink); font-size: 1.1rem; line-height: 1.25; text-wrap: balance; }
  .course-progress-copy small { margin-top: auto; padding-top: 0.75rem; color: var(--ink); font-size: 0.75rem; font-weight: 700; }
  .course-progress-arrow { position: absolute; top: 1rem; right: 1rem; border-radius: var(--radius-pill); background: rgb(255 255 255 / 72%); padding: 0.1rem 0.55rem; color: var(--ink); font-size: 1rem; font-weight: 800; transition: transform 180ms cubic-bezier(.22, 1, .36, 1); }
  .course-progress-item:hover .course-progress-arrow { transform: translateX(2px); }
  .dashboard-panel { scroll-margin-top: 5rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); padding: 1.5rem; }
  .dashboard-library-grid .dashboard-panel { border: 0; background: var(--brand-field); padding: 1.25rem; }
  .dashboard-library-grid .dashboard-panel-heading a { color: var(--ink); }
  .dashboard-library-grid .dashboard-list { margin-top: 0.75rem; }
  .dashboard-library-grid .dashboard-list-item { grid-template-columns: minmax(0, 1fr) auto; min-height: 3.75rem; padding-block: 0.75rem; }
  .dashboard-library-grid .dashboard-item-state, .dashboard-library-grid .dashboard-item-state.complete { background: transparent; padding: 0; color: var(--ink); }
  .dashboard-panel-heading > span { color: var(--muted); font-size: var(--type-caption); font-weight: 700; }
  .dashboard-list { margin-top: 1rem; }
  .dashboard-list-item { display: grid; grid-template-columns: 2.5rem minmax(0, 1fr) auto; gap: 0.75rem; align-items: center; min-height: 4.5rem; border-bottom: 1px solid var(--line); padding-block: 1rem; }
  .dashboard-list-item:first-child { padding-top: 0; }
  .dashboard-list-item:last-child { border-bottom: 0; padding-bottom: 0; }
  .dashboard-list-item:hover .dashboard-item-copy strong { color: var(--primary-hover); }
  .dashboard-item-icon { display: grid; width: 2.5rem; height: 2.5rem; place-items: center; border-radius: var(--radius-sm); background: var(--blue); color: var(--ink); font-weight: 800; }
  .dashboard-item-copy { display: grid; min-width: 0; gap: 0.2rem; }
  .dashboard-item-copy strong { overflow: hidden; color: var(--ink); font-size: var(--type-caption); text-overflow: ellipsis; white-space: nowrap; transition: color 180ms cubic-bezier(.22, 1, .36, 1); }
  .dashboard-item-copy small { color: var(--muted); font-size: var(--type-caption); }
  .dashboard-item-state { border-radius: var(--radius-pill); background: var(--blue); padding: 0.25rem 0.55rem; color: var(--primary-hover); font-size: var(--type-caption); font-weight: 800; white-space: nowrap; }
  .dashboard-item-state.complete { background: var(--progress); color: var(--ink); }
  .library-page { max-width: 960px; padding-top: 2.5rem; }
  .library-header { margin-bottom: 2rem; }
  .library-header-with-action { display: flex; align-items: end; justify-content: space-between; gap: 1.5rem; }
  .library-header h1 { color: var(--ink); font-size: 2.25rem; }
  .library-header p { margin-top: 0.5rem; }
  .library-empty-panel { overflow: hidden; border: 0; background: var(--brand-field); padding: clamp(1.5rem, 5vw, 3.5rem); }
  .library-empty { display: grid; grid-template-columns: minmax(0, 1fr) minmax(10rem, 15rem); gap: clamp(1rem, 5vw, 4rem); align-items: center; min-height: 20rem; }
  .library-empty-copy { max-width: 34rem; }
  .library-empty-copy h2 { max-width: 15ch; color: var(--ink); font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; letter-spacing: -0.04em; line-height: 1; text-wrap: balance; }
  .library-empty-copy p { max-width: 48ch; margin-top: 1rem; color: var(--ink); font-size: 1rem; line-height: 1.55; text-wrap: pretty; }
  .library-empty-action { width: fit-content; margin-top: 1.5rem; border-color: var(--ink); background: var(--ink); color: var(--white); text-decoration: none; }
  .library-empty-action:hover { border-color: var(--primary-hover); background: var(--primary-hover); color: var(--white); }
  .library-empty-art { width: 100%; max-height: 16rem; object-fit: contain; }
  .summary-library-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
  .summary-library-card { display: flex; min-height: 16rem; flex-direction: column; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); padding: 1.35rem; transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease; }
  .summary-library-card:hover { border-color: var(--line-strong); box-shadow: var(--shadow-lift); transform: translateY(-3px); }
  .summary-library-course { margin: -1.35rem -1.35rem .65rem; padding: 1rem 1.35rem; background: var(--brand-field); color: var(--ink); font-size: 0.75rem; font-weight: 800; overflow-wrap: anywhere; }
  .summary-library-copy { display: grid; gap: 0.75rem; margin-top: 0.6rem; }
  .summary-library-copy strong { display: -webkit-box; overflow: hidden; color: var(--ink); font-size: 1.1rem; letter-spacing: -0.025em; line-height: 1.35; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
  .summary-library-copy > span { display: -webkit-box; overflow: hidden; color: var(--muted); font-size: 0.86rem; line-height: 1.55; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
  .summary-library-meta { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: auto; padding-top: 1.25rem; color: var(--muted); font-size: 0.75rem; font-weight: 700; }
  .summary-library-arrow { display: grid; width: 2rem; height: 2rem; flex: 0 0 auto; margin-left: auto; border-radius: 50%; background: var(--blue); color: var(--primary-hover); font-size: 1rem; place-items: center; transition: transform 180ms ease; }
  .summary-library-card:hover .summary-library-arrow { transform: translateX(2px); }

  .course-setup { width: min(680px, calc(100% - 2rem)); padding-top: 2rem; }
  .course-setup-back { display: inline-flex; font-size: var(--type-support); }
  .course-setup-card { margin-top: 2rem; border-radius: var(--radius); background: var(--blue); padding: clamp(1.5rem, 4vw, 2.75rem); }
  .course-setup-card > h1 { margin-bottom: 2rem; color: var(--ink); font-size: 2.25rem; font-weight: 800; letter-spacing: -0.035em; line-height: 1.02; }
  .course-setup-form { display: grid; gap: 2rem; }
  .course-form-heading { display: grid; gap: 0.2rem; }
  .course-form-heading strong { color: var(--ink); font-size: 1.25rem; font-weight: 800; }
  .course-form-heading span { color: var(--muted); font-size: var(--type-support); }
  .course-setup-form .field { gap: 0.6rem; }
  .course-setup-form .field > label { font-size: 1rem; font-weight: 700; }
  .course-emoji-field select { appearance: none; width: min(100%, 15rem); min-height: 3.5rem; border: 1px solid transparent; border-radius: 1rem; background: #edf0f4 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235a6879' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 1rem center; padding: .9rem 3rem .9rem 1.15rem; color: var(--ink); font: inherit; font-weight: 600; cursor: pointer; }
  .course-form-details .field input:is([type="text"], [type="url"]) { appearance: none; min-height: 3.5rem; border: 1px solid transparent; border-radius: 1rem; background: #edf0f4; padding: 1rem 1.15rem; color: var(--ink); font-size: 1rem; font-weight: 600; box-shadow: none; }
  .course-form-details .course-name-field input { font-size: 1.15rem; }
  .course-form-details input::placeholder { color: #697583; font-weight: 500; }
  .course-form-details .field input:is([type="text"], [type="url"]):hover, .course-emoji-field select:hover { background-color: #e5eaf0; }
  .course-form-details .field input:is([type="text"], [type="url"]):focus, .course-emoji-field select:focus-visible { border-color: #126fc4; outline: 0; background-color: white; box-shadow: 0 0 0 3px rgb(18 111 196 / 14%); }
  .material-field > p { margin-top: 0.25rem; font-size: 0.86rem; }
  .coursework-picker { border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); padding: clamp(1.25rem, 4vw, 2rem); }
  .coursework-picker-intro { display: flex; align-items: center; gap: 1rem; }
  .coursework-picker-icon { flex: 0 0 auto; width: 3.5rem; height: 3.5rem; border-radius: var(--radius-sm); background: var(--blue); padding: 0.65rem; color: var(--primary-hover); }
  .coursework-picker-intro strong { display: block; color: var(--ink); font-size: 1.05rem; font-weight: 800; line-height: 1.4; }
  .coursework-picker-intro p { margin-top: 0.25rem; font-size: var(--type-caption); }
  .coursework-picker-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }
  .coursework-picker .coursework-picker-control { position: relative; color: var(--button-text); font-size: var(--type-caption); font-weight: 700; cursor: pointer; }
  .coursework-picker .coursework-picker-control.secondary { color: var(--ink); }
  .coursework-picker-control svg { width: 1.15rem; height: 1.15rem; margin-right: 0.2rem; }
  .coursework-picker-control .material-input { inset: 0; width: 100%; height: 100%; clip: auto; padding: 0; opacity: 0; cursor: pointer; }
  .coursework-picker-control:has(input:focus-visible) { outline: var(--focus-ring); outline-offset: 3px; }
  .coursework-picker .coursework-picker-formats { margin-top: 1rem; font-size: 0.75rem; }
  .coursework-picker .coursework-picker-folder-help { margin-top: 1rem; border-top: 1px solid var(--line); padding-top: 1rem; font-size: 0.75rem; line-height: 1.6; }
  @media (max-width: 560px) {
    .coursework-picker-intro { align-items: flex-start; }
    .coursework-picker-actions { flex-direction: column; }
    .coursework-picker-control { width: 100%; }
  }
  .material-input { position: absolute; width: 1px; height: 1px; clip: rect(0 0 0 0); }
  .selected-files { margin-top: 0.7rem; color: var(--muted); font-size: 0.8rem; }
  .selected-files ul { display: grid; gap: 0.45rem; list-style: none; }
  .selected-file { display: flex; align-items: center; gap: 0.7rem; border: 1px solid var(--line); border-radius: 0.6rem; background: rgba(255, 255, 255, 0.7); padding: 0.55rem 0.7rem; color: var(--ink); }
  .selected-file::before { content: "FILE"; border-radius: var(--radius-pill); background: var(--sidebar-background); padding: 0.22rem 0.38rem; color: var(--muted); font-size: 0.62rem; font-weight: 700; letter-spacing: 0.04em; }
  .selected-file-name { overflow: hidden; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
  .selected-file-meta { margin-left: auto; color: var(--muted); font-size: 0.73rem; white-space: nowrap; }
  .course-setup-actions { display: flex; justify-content: flex-end; border-top: 1px solid var(--line); padding-top: 1.5rem; }
  .course-setup-actions .button { width: auto; min-height: 3rem; padding-inline: 2rem; background: var(--button); border-color: var(--button); font-weight: 800; }

  .back-link { display: inline-flex; align-items: center; gap: 0.4rem; color: var(--muted); font-size: 0.88rem; font-weight: 600; }
  .back-link:hover { color: var(--ink); }
  .course-hero { display: flex; align-items: center; gap: 1.25rem; margin-top: 1.25rem; }
  .course-hero-text h1 { font-size: clamp(2.2rem, 4.5vw, 3.5rem); }
  .course-hero-text p { margin-top: 0.2rem; }
  .section { margin-top: 2rem; }
  .callout { border-radius: var(--radius-sm); background: var(--peach); padding: 1rem 1.25rem; }
  .course-page { width: min(960px, calc(100% - 2rem)); padding-top: 2.5rem; }
  .course-page .back-link { color: var(--primary-hover); font-weight: 800; }
  .course-hero { gap: 1rem; margin-top: 1.75rem; }
  .course-hero-text h1 { color: var(--ink); font-size: 2.5rem; font-weight: 800; letter-spacing: -0.035em; line-height: 1; }
  .course-hero-text { min-width: 0; }
  .course-hero-actions { display: flex; align-items: center; gap: 1rem; margin-left: auto; }
  .course-hero-actions a { font-size: var(--type-caption); }
  .course-section-return { display: inline-flex; align-items: center; gap: 0.4rem; margin-top: 2rem; color: var(--primary-hover); font-size: 0.88rem; font-weight: 800; }
  .course-board { display: grid; gap: 1.5rem; margin-top: 2.5rem; }
  .course-section-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
  .course-section-heading > div { display: flex; align-items: baseline; gap: 0.65rem; }
  .course-section-heading h2 { color: var(--ink); font-size: 1.35rem; letter-spacing: -0.025em; }
  .course-materials-heading-link { position: relative; z-index: 1; color: var(--ink); font-size: 1.35rem; font-weight: 800; letter-spacing: -0.025em; line-height: 1.2; }
  .course-section-heading span { color: var(--muted); font-size: var(--type-caption); font-weight: 700; }
  .dashboard-panel-heading h2.section-heading, .course-section-heading h2.section-heading { color: var(--ink); font-size: 1.35rem; letter-spacing: -0.025em; }
  .course-section-heading a:focus-visible, .course-summary-row:focus-visible, .course-material-row:focus-visible, .course-hero-actions a:focus-visible, .course-section-return:focus-visible { outline: var(--focus-ring); outline-offset: 3px; }
  .course-summaries { border-radius: var(--radius); background: var(--brand-field); padding: clamp(1.25rem, 3vw, 2rem); }
  .course-summaries .course-section-heading h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); }
  .course-summaries .course-section-heading h2 a { display: inline-flex; align-items: center; gap: 0.65rem; color: var(--white); text-decoration: none; }
  .course-summaries .course-section-heading h2 a::after { display: grid; width: 2rem; height: 2rem; place-items: center; border: 2px solid currentColor; border-radius: 50%; content: "→"; font-size: 1rem; text-decoration: none; }
  .course-summaries .course-section-heading > a.course-summary-limit { border-radius: var(--radius-pill); background: var(--ink); padding: 0.7rem 1rem; color: var(--white); font-size: 0.82rem; font-weight: 800; text-decoration: none; }
  .course-summaries .course-section-heading .button { border-color: var(--white); background: var(--white); color: var(--primary-hover); }
  .course-summary-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 1.25rem; }
  .course-summary-item { min-width: 0; }
  .course-summary-row { display: flex; min-height: 10.5rem; height: 100%; flex-direction: column; align-items: stretch; gap: 1rem; border-radius: var(--radius); background: var(--white); padding: 1.1rem; transition: box-shadow 180ms ease; }
  .course-summary-row > a { display: flex; min-width: 0; flex: 1; }
  .course-summary-row > a > span { display: grid; min-width: 0; flex: 1; gap: 0.2rem; }
  .course-summary-row strong { display: -webkit-box; overflow: hidden; color: var(--ink); font-size: 1rem; line-height: 1.35; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
  .course-summary-row small { color: var(--primary-hover); font-size: 0.8rem; font-weight: 700; }
  .course-summary-row p { display: -webkit-box; overflow: hidden; margin-top: 0.6rem; color: var(--muted); font-size: 0.82rem; line-height: 1.45; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
  .course-summary-row .course-summary-meta { margin-top: auto; padding-top: 0.8rem; color: var(--muted); font-size: 0.74rem; font-weight: 700; }
  .course-summary-row:hover { box-shadow: 0 6px 8px rgb(16 26 53 / 14%); }
  .course-summary-row form { align-self: flex-end; line-height: 1; }
  .course-summary-empty { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2rem; align-items: end; margin-top: 1.25rem; border-radius: var(--radius); background: var(--white); padding: 1.5rem; }
  .course-summary-empty h3 { color: var(--ink); font-size: 1.35rem; letter-spacing: -0.03em; line-height: 1.15; text-wrap: balance; }
  .course-summary-empty p { max-width: 46ch; margin-top: 0.35rem; color: var(--ink); font-size: 0.88rem; }
  .course-summary-empty-action { display: flex; align-items: center; gap: 1.25rem; border-radius: var(--radius-pill); background: var(--ink); padding: 0.75rem 1rem; color: var(--white); font-size: var(--type-caption); font-weight: 800; white-space: nowrap; }
  .course-summary-empty-action:hover span { transform: translateX(3px); }
  .course-summary-empty-action span { transition: transform 180ms cubic-bezier(.22, 1, .36, 1); }
  .course-supporting-tools { display: grid; gap: 1.5rem; }
  .course-materials { min-width: 0; scroll-margin-top: 2rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); padding: 1.25rem; }
  .course-material-add { display: grid; width: 2rem; height: 2rem; place-items: center; border-radius: 50%; background: var(--blue); cursor: pointer; text-decoration: none; }
  .course-material-add img { width: 1.1rem; height: 1.1rem; }
  .course-material-preview { display: grid; grid-auto-columns: 6rem; grid-auto-flow: column; gap: 0.75rem; overflow-x: auto; margin-top: 1rem; padding-bottom: 0.25rem; }
  .material-library { grid-template-columns: repeat(auto-fill, minmax(7rem, 1fr)); grid-auto-columns: auto; grid-auto-flow: row; overflow: visible; }
  .material-search { display: flex; align-items: center; gap: 0.75rem; }
  .material-search input { min-width: 0; }
  .material-search .button { flex: 0 0 auto; }
  .material-search > a { color: var(--primary-hover); font-size: var(--type-caption); font-weight: 800; }
  .material-search-results { display: grid; margin-top: 1rem; border-top: 1px solid var(--line); }
  .material-search-results > p { padding-block: 1rem; }
  .material-search-result { display: grid; gap: 0.25rem; border-bottom: 1px solid var(--line); padding-block: 1rem; }
  .material-search-result strong { color: var(--ink); font-size: var(--type-caption); }
  .material-search-result span { color: var(--muted); font-size: var(--type-caption); line-height: 1.5; }
  .material-search-result:hover strong { color: var(--primary-hover); }
  .course-material-card { position: relative; min-width: 0; }
  .course-material-row { display: grid; min-width: 0; align-content: start; gap: 0.25rem; }
  .course-material-row:hover strong { color: var(--primary-hover); }
  .course-material-row strong { overflow: hidden; margin-top: 0.35rem; color: var(--ink); font-size: 0.78rem; line-height: 1.3; text-overflow: ellipsis; white-space: nowrap; }
  .course-material-thumb { display: grid; aspect-ratio: 4 / 3; overflow: hidden; place-items: center; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--blue); }
  .course-material-thumb img { width: 100%; height: 100%; object-fit: cover; }
  .course-material-type { color: var(--primary-hover); font-size: 0.72rem; font-weight: 800; }
  .course-material-delete { position: absolute; top: 0.35rem; right: 0.35rem; display: grid; width: 1.8rem; height: 1.8rem; place-items: center; border: 0; border-radius: 50%; background: rgb(255 255 255 / 90%); cursor: pointer; }
  .course-material-delete:hover { background: var(--peach); }
  .course-material-delete:focus-visible { outline: var(--focus-ring); outline-offset: 2px; }
  .course-material-delete img { width: 0.9rem; height: 0.9rem; }
  .course-material-state { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -75%); }
  .course-material-state .material-loader { width: 1.5rem; height: 1.5rem; border-width: 2px; }
  .summary-new { display: grid; gap: 1.5rem; margin-top: 2rem; }
  .summary-new > h1 { color: var(--ink); font-size: 2rem; letter-spacing: -0.035em; }
  .summary-new > .summary-request { justify-items: end; }
  .summary-new > .course-summary-empty { border: 1px solid var(--line); border-radius: var(--radius); background: var(--blue); padding: 1.5rem; }

  .study-hub { display: grid; gap: 1rem; margin-top: 2rem; }
  .summary-request { display: grid; justify-items: end; gap: 1rem; margin-top: 1rem; }
  .summary-extra-request { display: grid; width: 100%; gap: 0.4rem; }
  .summary-extra-request label { color: var(--ink); font-size: var(--type-caption); font-weight: 800; }
  .summary-extra-request textarea { width: 100%; resize: vertical; }
  .source-picker { width: 100%; margin: 0; border: 0; padding: 0; }
  .source-picker-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
  .source-picker-heading legend { color: var(--ink); font-size: var(--type-caption); font-weight: 800; }
  .source-picker-heading legend span { color: var(--muted); font-weight: 600; }
  .source-picker-heading label { display: flex; align-items: center; gap: 0.4rem; color: var(--primary-hover); font-size: 0.8rem; font-weight: 800; cursor: pointer; }
  .source-picker-heading input, .source-option > input { width: 1rem; height: 1rem; margin: 0; accent-color: var(--primary); }
  .source-options { display: grid; grid-template-columns: repeat(auto-fill, 15rem); gap: 1rem; margin-top: 0.75rem; }
  .source-option { position: relative; display: grid; grid-template-rows: minmax(0, 1fr) auto; width: 15rem; height: 13rem; min-width: 0; gap: 0.65rem; border: 1px solid var(--line); border-radius: var(--radius); padding: 0.75rem; cursor: pointer; }
  .source-option > input { position: absolute; z-index: 1; top: 1rem; right: 1rem; }
  .source-option:has(input:checked) { border-color: var(--primary); background: var(--blue); }
  .source-option:has(input:focus-visible) { outline: var(--focus-ring); outline-offset: 2px; }
  .source-preview { display: grid; aspect-ratio: 4 / 3; overflow: hidden; place-items: center; border-radius: 0.45rem; background: var(--white); color: var(--primary-hover); font-size: 0.75rem; font-weight: 800; }
  .source-preview img { width: 100%; height: 100%; object-fit: contain; }
  .source-option strong { overflow: hidden; color: var(--ink); font-size: var(--type-caption); text-overflow: ellipsis; white-space: nowrap; }
  .summary-request .button { min-height: 3rem; font-weight: 800; }
  .summary-add-coursework { justify-self: start; color: var(--primary-hover); font-size: var(--type-caption); font-weight: 800; }
  .summary-builder--preparing { display: grid; grid-template-columns: minmax(0, 1fr) minmax(12rem, 0.45fr); gap: clamp(1.5rem, 5vw, 4rem); align-items: center; min-height: 17rem; border: 1px solid var(--line); border-radius: 0.75rem; background: var(--white); padding: clamp(1.5rem, 5vw, 3rem); color: var(--ink); }
  .summary-builder--preparing h2 { max-width: 13ch; color: var(--ink); }
  .material-loader { display: block; width: 2rem; height: 2rem; border: 3px solid rgb(31 36 44 / 18%); border-top-color: var(--ink); border-radius: 50%; animation: material-loading 800ms linear infinite; }
  .summary-preparing-art { display: grid; aspect-ratio: 1; place-items: center; }
  .summary-preparing-art img { width: min(100%, 16rem); height: min(100%, 16rem); object-fit: contain; }
  .summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1rem; margin-top: 0.75rem; }
  .summary-card { position: relative; display: grid; min-height: 190px; border: 1px solid var(--line); border-radius: 0.75rem; background: var(--white); padding: 1.2rem; }
  .summary-card-link { color: inherit; text-decoration: none; }
  .summary-card-link:hover h3 { color: var(--primary); }
  .summary-card-label { color: var(--primary-hover); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.05em; text-transform: uppercase; }
  .summary-card h3 { margin-top: 0.55rem; color: var(--ink); font-size: 1.15rem; font-weight: 800; letter-spacing: -0.02em; }
  .summary-card p { margin-top: 0.4rem; color: var(--muted); font-size: 0.86rem; }
  .summary-card-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 0.65rem; margin-top: auto; padding-top: 1.2rem; }
  .summary-card-open { color: var(--primary-hover); font-size: var(--type-caption); font-weight: 800; }
  .summary-progress { margin-top: 1.25rem; }
  .summary-progress-copy { display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); font-size: var(--type-caption); font-weight: 700; }
  .summary-progress-copy span:last-child { color: var(--ink); text-align: right; }
  .summary-progress-track { height: 0.55rem; overflow: hidden; margin-top: 0.55rem; border-radius: 999px; background: var(--blue); }
  .summary-progress-track span { display: block; width: 100%; height: 100%; border-radius: inherit; background: var(--progress); transform: scaleX(0.08); transform-origin: left; transition: transform 1s linear; }
  .summary-progress p { margin-top: 0.55rem; font-size: var(--type-caption); }
  .summary-delete { position: absolute; right: 0.7rem; top: 0.55rem; border: 0; background: transparent; color: #6b6b6b; font-size: 0.72rem; cursor: pointer; }
  .summary-delete:hover { color: var(--danger); }
  .summary-delete:focus-visible { outline: 3px solid rgba(35, 86, 246, 0.28); outline-offset: 2px; }
  .delete-dialog { width: min(30rem, calc(100% - 2rem)); border: 0; border-radius: 0.75rem; background: var(--white); padding: 0; color: var(--ink); box-shadow: 0 8px 24px rgb(16 26 53 / 28%); }
  .delete-dialog::backdrop { background: rgb(16 26 53 / 68%); }
  .delete-dialog-content { padding: clamp(1.25rem, 5vw, 2rem); }
  .delete-dialog h2 { font-size: 1.45rem; font-weight: 800; letter-spacing: -0.025em; }
  .delete-dialog p { margin-top: 0.8rem; color: var(--muted); font-size: 0.95rem; line-height: 1.6; }
  .delete-dialog p strong { color: var(--ink); }
  .delete-dialog-actions { display: flex; justify-content: flex-end; gap: 0.65rem; margin-top: 1.5rem; }
  .delete-dialog .delete-dialog-content h2 { max-width: none; margin: 0; font-size: 1.45rem; }
  .folder-review .folder-review-skipped { margin-top: 1rem; border-top: 1px solid var(--line); padding-top: 1rem; color: var(--muted); font-size: var(--type-caption); }
  .folder-review-skipped summary { color: var(--ink); font-weight: 700; cursor: pointer; }
  .folder-review-skipped summary:focus-visible { outline: var(--focus-ring); outline-offset: 3px; }
  .folder-review-skipped ul { max-height: 10rem; overflow: auto; margin-top: 0.75rem; overflow-wrap: anywhere; }
  .folder-review-skipped li + li { margin-top: 0.4rem; }
  .delete-dialog[open] { animation: delete-dialog-in 180ms cubic-bezier(.22, 1, .36, 1); }

  @keyframes delete-dialog-in {
    from { opacity: 0; transform: translateY(0.5rem) scale(0.98); }
  }
  .study-kicker { margin-bottom: 0.9rem; color: var(--progress); font-size: var(--type-caption); font-weight: 800; }
  .materials-file-picker { cursor: pointer; }
  .materials-file-picker input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .settings-hub { display: grid; gap: 1.5rem; margin-top: 2rem; }
  .settings-hub .course-setup-form { width: 100%; margin-top: 0.5rem; }
  .settings-danger { display: flex; align-items: center; justify-content: space-between; gap: 1rem; width: 100%; border-top: 1px solid var(--line); padding-top: 1.25rem; }
  .course-form-columns { display: grid; gap: 3rem; }
  .course-form-details, .course-form-schedule { display: grid; min-width: 0; gap: 2.5rem; }
  .course-form-details .course-meeting-settings { display: contents; }
  .course-form-details .course-name-field, .course-form-details .course-meeting-field, .course-form-schedule .course-class-time { display: grid; grid-template-columns: minmax(12rem, .55fr) minmax(0, 1fr); align-items: start; column-gap: 3rem; }
  .course-form-details .course-name-field > label, .course-form-details .course-meeting-field > label, .course-form-schedule .course-class-time > label { padding-top: 1rem; }
  .course-form-details .course-meeting-field > :not(label), .course-form-schedule .course-class-time > :not(label) { grid-column: 2; }
  .course-form-details .course-format-field, .course-form-schedule .course-class-days { display: flow-root; }
  .course-form-details .course-format-field > legend, .course-form-schedule .course-class-days > legend { float: left; width: calc((100% - 3rem) * .55 / 1.55); margin: 0 3rem 0 0; padding-top: 1rem; }
  .course-form-details .course-format-options, .course-form-schedule .study-day-options, .course-form-schedule .course-class-days > .field-note { margin-left: calc((100% - 3rem) * .55 / 1.55 + 3rem); }
  .course-form-schedule { border-top: 1px solid var(--line); padding-top: 2.5rem; }
  .course-form-schedule h2 { font-size: 1.4rem; letter-spacing: -.035em; }
  .course-form-schedule .course-class-days { margin-top: 0; }
  .course-form-schedule .study-day-option > span { border-color: transparent; background: #f0f3f6; border-radius: 1rem; }
  .course-form-schedule .study-day-option:hover > span { border-color: #9abddf; }
  .course-form-schedule .study-day-option input:checked + span { border-color: #126fc4; background: #126fc4; color: white; }
  .course-form-schedule .study-day-option input:checked + span .study-day-tick { color: white; }
  .course-format-field { min-width: 0; margin: 0; border: 0; padding: 0; }
  .course-format-field legend { margin-bottom: .75rem; padding: 0; color: var(--ink); font-weight: 700; }
  .course-format-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem; }
  .course-format-option { position: relative; cursor: pointer; }
  .course-format-option > input { position: absolute; width: 1px; height: 1px; opacity: 0; }
  .course-format-option > span { display: flex; align-items: center; gap: .75rem; min-height: 5.5rem; border: 1px solid var(--line); border-radius: 1rem; background: white; padding: 1rem; }
  .course-format-option svg { width: 1.75rem; height: 1.75rem; flex-shrink: 0; }
  .course-format-option strong, .course-format-option small { display: block; }
  .course-format-option small { margin-top: .25rem; color: var(--muted); font-size: .75rem; }
  .course-format-check { display: grid; width: 1.25rem; height: 1.25rem; flex-shrink: 0; margin-left: auto; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; color: transparent; font-size: .75rem; }
  .course-format-option input:checked + span { border-color: #126fc4; background: #eaf4ff; }
  .course-format-option input:checked + span .course-format-check { border-color: #126fc4; background: #126fc4; color: white; }
  .course-format-option input:focus-visible + span { outline: var(--focus-ring); outline-offset: 3px; }
  .course-meeting-settings { display: grid; gap: 1.75rem; }
  .course-meeting-settings:not(:has(input[name="course[remote]"][value="true"]:checked)) .course-meeting-field { display: none; }
  .course-meeting-providers { display: flex; flex-wrap: wrap; gap: .5rem; }
  .course-meeting-providers > span { display: inline-flex; align-items: center; gap: .4rem; border: 1px solid var(--line); border-radius: 2rem; background: white; padding: .35rem .65rem; font-size: .75rem; font-weight: 600; }
  .course-meeting-providers svg { width: 1.1rem; height: 1.1rem; }
  .course-class-time { margin-top: 1.5rem; }
  .course-form-schedule .course-class-time { margin-top: 0; }
  .course-time-control { display: flex; align-items: center; gap: 1.5rem; border: 1px solid transparent; border-radius: 1.25rem; background: #eaf4ff; padding: 1.5rem; }
  .course-time-control:focus-within { border-color: #126fc4; box-shadow: 0 0 0 3px rgb(18 111 196 / 14%); }
  .course-clock { position: relative; width: 6rem; height: 6rem; flex: 0 0 auto; border: 5px solid #126fc4; border-radius: 50%; background: repeating-conic-gradient(from -1deg, #9abddf 0deg 2deg, transparent 2deg 30deg), white; box-shadow: inset 0 0 0 5px white; }
  .course-clock::before { position: absolute; inset: 10px; border-radius: 50%; background: white; content: ""; }
  .course-clock::after { position: absolute; top: calc(50% - 4px); left: calc(50% - 4px); width: 8px; height: 8px; border-radius: 50%; background: #126fc4; content: ""; }
  .course-clock span { position: absolute; bottom: 50%; left: calc(50% - 2px); width: 4px; border-radius: 4px; background: #126fc4; transform-origin: bottom; }
  .course-clock-hour { height: 23px; transform: rotate(var(--hour-angle, 0deg)); }
  .course-clock-minute { height: 33px; transform: rotate(var(--minute-angle, 0deg)); }
  .course-clock.is-unset span { opacity: .2; }
  .course-time-entry { min-width: 0; flex: 1; }
  .course-time-entry > span { color: var(--muted); font-size: .8rem; }
  .course-time-entry input[type="time"] { width: 100%; min-width: 0; margin-top: .35rem; border: 0; border-radius: .6rem; background: transparent; padding: .4rem 0; outline: none; box-shadow: none; color: var(--ink); font-size: clamp(1.5rem, 2.8vw, 2.25rem); font-weight: 700; font-variant-numeric: tabular-nums; }
  .course-time-entry input[type="time"]:focus { border-color: transparent; outline: 0; box-shadow: none; }
  .course-time-entry input::-webkit-datetime-edit-fields-wrapper { padding: 0; }
  .course-time-entry input::-webkit-calendar-picker-indicator { width: 1.1rem; opacity: .5; cursor: pointer; }
  .dashboard-playful .settings-danger .button.danger { border-color: var(--danger); background: var(--danger); color: white; }
  .dashboard-playful .settings-danger .button.danger:hover { border-color: #a61f2c; background: #a61f2c; }
  .settings-danger > div > strong { color: var(--danger); }
  .course-setup-form .course-setup-actions { border-top: 1px solid var(--line); padding-top: 1.5rem; }
  @media (max-width: 1000px) {
    .course-form-details .course-name-field, .course-form-details .course-meeting-field, .course-form-schedule .course-class-time { grid-template-columns: 1fr; }
    .course-form-details .course-name-field > label, .course-form-details .course-meeting-field > label, .course-form-schedule .course-class-time > label { padding-top: 0; }
    .course-form-details .course-meeting-field > :not(label), .course-form-schedule .course-class-time > :not(label) { grid-column: auto; }
    .course-form-details .course-format-field > legend, .course-form-schedule .course-class-days > legend { float: none; width: auto; margin: 0 0 .85rem; padding: 0; }
    .course-form-details .course-format-options, .course-form-schedule .study-day-options, .course-form-schedule .course-class-days > .field-note { margin-left: 0; }
  }
  @media (max-width: 480px) {
    .course-format-option > span { flex-wrap: wrap; gap: .5rem; padding: .75rem; }
    .course-format-option svg { width: 1.4rem; height: 1.4rem; }
    .course-format-option small { font-size: .7rem; }
    .course-time-control { gap: 1rem; padding: 1rem; }
    .course-clock { width: 5rem; height: 5rem; }
    .course-clock-hour { height: 18px; }
    .course-clock-minute { height: 26px; }
  }
  .settings-danger strong, .settings-danger span { display: block; }
  .settings-danger span { margin-top: 0.25rem; color: var(--muted); font-size: 0.82rem; }

  @media (max-width: 1150px) {
    .dashboard-library-grid { grid-template-columns: 1fr; }
  }

  @media (max-width: 900px) {
    .dashboard-account-link { display: none; }
  }

  @media (max-width: 720px) {
    .dashboard-header { align-items: stretch; flex-direction: column; }
    .dashboard-tools { width: 100%; flex-basis: auto; }
    .home-empty { margin-top: 3rem; }
    .dashboard-attention { grid-template-columns: 1fr; gap: 1rem; }
    .dashboard-panel-heading { align-items: flex-start; }
    .summary-builder--preparing { grid-template-columns: 1fr; }
    .summary-preparing-art { max-width: 10rem; justify-self: center; }
    .library-header-with-action { align-items: flex-start; flex-direction: column; }
    .material-search { align-items: stretch; flex-wrap: wrap; }
    .material-search input { flex-basis: 100%; }
    .library-empty { grid-template-columns: 1fr; min-height: 0; }
    .library-empty-art { width: min(11rem, 48vw); justify-self: end; }
    .summary-library-grid { grid-template-columns: 1fr; }
    .summary-library-card { min-height: 13rem; }
    .course-summary-empty { grid-template-columns: 1fr; align-items: start; }
    .course-summary-empty-action { width: 100%; justify-content: space-between; }
    .course-summary-list { grid-template-columns: 1fr; }
    .course-summary-row { min-height: 8rem; }
    .course-progress-list { grid-template-columns: 1fr; }
    .course-setup-actions .button { width: 100%; }
    .course-hero { align-items: flex-start; flex-wrap: wrap; }
    .course-hero-actions { width: 100%; margin-left: 5rem; }
    .course-supporting-tools { grid-template-columns: 1fr; }
    .summary-request .button { width: 100%; }
    .summary-progress-copy { align-items: flex-start; flex-direction: column; gap: 0.2rem; }
    .summary-progress-copy span:last-child { text-align: left; }
    .settings-danger { align-items: stretch; flex-direction: column; }
    .settings-danger .button { width: 100%; }
    .delete-dialog-actions { align-items: stretch; flex-direction: column-reverse; }
    .delete-dialog-actions .button, .delete-dialog-actions form { width: 100%; }
  }

  @media (max-width: 480px) {
    .course-hero-actions { margin-left: 0; }
  }

  @media (prefers-reduced-motion: reduce) {
    .course-progress-item, .course-progress-arrow, .course-summary-row, .course-summary-empty-action span, .summary-library-card, .summary-library-arrow { transition: none; }
    .summary-progress-track span { transition: none; }
    .delete-dialog[open] { animation: none; }
    .material-loader { animation: none; }
  }

}

@keyframes material-loading {
  to { transform: rotate(360deg); }
}