/* Public landing */
.landing { gap: clamp(24px, 5vw, 66px); padding-bottom: 30px; }
.landing-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(32px, 5vw, 80px);
}
.landing-copy { display: grid; justify-items: start; gap: clamp(20px, 3.2vw, 38px); }
.landing-copy h1 {
    font: 400 clamp(3rem, 6.5vw, 6.8rem)/.91 var(--serif);
    letter-spacing: -.075em;
}
.landing-copy h1 span { color: var(--rust); }
.landing-copy > p { font-size: clamp(1.15rem, 2.1vw, 1.5rem); }
.signin-note { margin-top: 10px; }
.landing-figure { border: 1px solid var(--ink); background: var(--ink); }
.landing-figure img { display: block; width: 100%; height: auto; }
.landing-figure figcaption {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 6px 16px;
    padding: 12px 16px;
    border-top: 1px solid var(--ink);
    background: var(--yellow);
    font-weight: 650;
}
.landing-figure figcaption span:last-child { font: .8rem/1.9 var(--mono); }
.landing-footer {
    border-top: 1px solid var(--strong-line);
    padding-top: 16px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px 16px;
}

/* Workspace */
.dashboard-banner, .course-banner {
    padding: clamp(24px, 4vw, 52px);
    background: var(--yellow);
    border: 1px solid var(--ink);
    border-radius: var(--radius);
}
.dashboard-banner {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: center;
    gap: 24px;
}
.dashboard-banner .page-header { gap: 26px; }
.dashboard-figure { width: 100%; height: auto; max-height: 240px; justify-self: end; }
.workspace-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 24px; }
.workspace-links a {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
    padding: 18px 8px;
    border-bottom: 1px solid var(--line);
    font-weight: 650;
    text-decoration: none;
}
.workspace-links a:hover { background: var(--surface); }
.workspace-links .icon:first-child { color: var(--rust); }
.dashboard-review {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 20px;
    border: 1px solid var(--line);
    background: var(--surface);
}
.dashboard-review p { margin-top: 5px; }

:is(.badge-owned, .badge-grade, .badge-subject, .badge-interactive, .badge-status) {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    width: fit-content;
    padding: 4px 8px;
    border: 1px solid transparent;
    border-radius: 4px;
    background: var(--wash);
    color: var(--ink);
    font-size: .82rem;
    font-weight: 650;
    line-height: 1.25;
    overflow-wrap: anywhere;
}
.badge-grade { background: var(--yellow); border-color: #a78319; }
.badge-subject { background: var(--mint); border-color: #b3c3b0; }
.badge-interactive { background: #e1e8ee; border-color: #b8c4ce; }
.badge-status { background: var(--rose); border-color: #d4a699; color: var(--rust-dark); }

.directory-list, .outline-list, .clean-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.directory-entry, .outline-list li { border-bottom: 1px solid var(--line); }
.directory-link {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) minmax(95px, .52fr) max-content auto;
    align-items: center;
    gap: clamp(10px, 2vw, 22px);
    min-width: 0;
    padding: 17px 8px;
    text-decoration: none;
}
.directory-link:hover, .outline-link:hover { background: var(--surface); }
.course-tile {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border: 1px solid var(--line);
    border-radius: 5px;
    background: var(--wash);
    color: var(--ink);
}
.directory-entry:nth-child(3n + 1) .course-tile { background: var(--yellow); }
.directory-entry:nth-child(3n + 2) .course-tile { background: var(--mint); }
.directory-name, .directory-tags { display: flex; flex-wrap: wrap; gap: 4px 6px; min-width: 0; }
.directory-name { flex-direction: column; }
.directory-name strong { font-size: 1.14rem; }
.directory-description, .outline-description {
    display: -webkit-box;
    overflow: hidden;
    overflow-wrap: anywhere;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    color: var(--ink);
}
.directory-counts, .outline-number { font: .82rem/1.5 var(--mono); }
.directory-counts { display: grid; }
.directory-arrow, .outline-link > .icon { color: var(--rust); }
.directory-controls, .outline-controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
    padding: 0 8px 12px;
}
.course-heading, .course-contents { display: grid; gap: 18px; }
.course-banner { gap: 18px; }
.course-banner .flex-row:empty { display: none; }
.course-banner .badge-grade { background: var(--surface); }
.course-description { font-size: 1.12rem; max-width: 66ch; white-space: pre-wrap; }
.course-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(225px, .42fr);
    align-items: start;
    gap: clamp(24px, 4vw, 52px);
}
.course-contents { gap: 34px; }
.course-sidebar { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.course-sidebar .section-title { font-size: 1.65rem; }
.detail-list > div { padding: 11px 0; border-bottom: 1px solid var(--line); }
.detail-list dt { font-weight: 700; }
.detail-list dd { margin-top: 3px; }
.management-actions, .share-box {
    display: grid;
    gap: 8px;
    margin-top: 18px;
}
.management-actions .btn-secondary, .management-actions .btn-danger { width: 100%; }
.share-box label { font-weight: 700; }
.outline-list li { display: flex; flex-wrap: wrap; align-items: center; }
.outline-link {
    flex: 1 1 245px;
    display: grid;
    grid-template-columns: 29px minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 8px 10px;
    padding: 14px 7px;
    text-decoration: none;
    min-width: 0;
}
.outline-link > .icon { grid-column: -2; justify-self: end; }
.outline-link strong { font-size: 1.07rem; }
.outline-number { align-self: center; color: var(--rust); }
.outline-edit { display: grid; place-items: center; width: 44px; min-height: 44px; color: var(--rust); }
.outline-edit:hover { background: var(--rose); }
.outline-controls { padding-block: 8px; }
.reading-paper { padding: clamp(20px, 4vw, 48px); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.reading-paper .rich-text { max-width: 72ch; font-size: 1.1rem; }
.lesson-pagination { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.lesson-pagination .btn-primary { margin-left: auto; }

/* Accounts, leaderboard, and community */
.about-hero { max-width: 790px; }
.about-hero p { font: clamp(1.3rem, 2.5vw, 2rem)/1.3 var(--serif); }
.about-grid, .profile-layout, .leaderboard-grid, .forum-layout, .admin-access-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: clamp(20px, 3vw, 38px);
}
.contact-list { display: grid; justify-items: start; gap: 12px; padding-top: 16px; }
.profile-identity {
    display: grid;
    justify-items: start;
    gap: 10px;
    background: var(--yellow);
    border: 1px solid var(--ink);
    border-radius: var(--radius);
    padding: clamp(20px, 3vw, 34px);
}
.profile-avatar { width: 70px; height: 70px; background: var(--ink); color: var(--surface); font-size: 1.65rem; }
.profile-identity .badge-grade { background: var(--surface); }
.leaderboard-table { width: 100%; border-collapse: collapse; table-layout: fixed; }
.leaderboard-table th, .leaderboard-table td { padding: 12px 8px; border-bottom: 1px solid var(--line); text-align: left; overflow-wrap: anywhere; }
.leaderboard-table th { font-size: .9rem; }
.leaderboard-table th:first-child { width: 60px; }
.leaderboard-table th:last-child { width: 112px; }
.leaderboard-table :is(th, td):last-child { text-align: right; }
.leaderboard-table .current-user { background: var(--mint); }
.rank-token, .your-rank {
    background: var(--wash);
    padding: 4px 8px;
    font: 650 .9rem/1.4 var(--mono);
}
.rank-first { background: var(--yellow); }
.your-rank { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; padding: 12px; margin-top: 14px; }
.forum-layout { grid-template-columns: minmax(0, 1.35fr) minmax(240px, 1fr); }
.forum-container { display: grid; gap: 16px; padding-top: 16px; }
.forum-post, .approval-card {
    display: grid;
    gap: 16px;
    padding: clamp(16px, 2.5vw, 24px);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
}
.post-header, .comment-form { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.post-content h3 { font: 400 1.65rem/1.15 var(--serif); margin-bottom: 6px; }
.post-content p { white-space: pre-wrap; }
.post-meta { font: .82rem/1.4 var(--mono); }
.comment-list:empty { display: none; }
.comment { border-top: 1px solid var(--line); padding-block: 6px; overflow-wrap: anywhere; }
.comment-form { justify-content: flex-end; }
.comment-form textarea { flex: 1 1 180px; }
.forum-composer { scroll-margin-top: 80px; }

/* Authoring, quiz, and moderation */
.card {
    position: relative;
    display: grid;
    gap: 8px;
    min-width: 0;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--ink);
}
.card-title { font-weight: 700; overflow-wrap: anywhere; }
.card-warning { background: var(--rose); border-color: #d4a699; color: var(--rust-dark); }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(230px, 100%), 1fr)); gap: 12px; }
.editor-toolbar {
    position: sticky;
    top: 0;
    z-index: 3;
    padding-block: 12px;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
}
.editor-toolbar .form-actions { margin-left: auto; }
.editor-toolbar output { margin-right: auto; }
.editor-toolbar output:empty { display: none; }
.editor-meta { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
.editor-meta .wide-field { grid-column: 1 / -1; }
.lesson-kind-menu { position: relative; }
.lesson-kind-menu summary, .admin-role-picker summary { list-style: none; }
.lesson-kind-menu summary::-webkit-details-marker, .admin-role-picker summary::-webkit-details-marker { display: none; }
.lesson-kind-options {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    z-index: 2;
    width: min(240px, 70vw);
    padding: 6px;
    border: 1px solid var(--strong-line);
    border-radius: 5px;
    background: var(--surface);
}
.lesson-kind-options button {
    display: block;
    width: 100%;
    border: 0;
    padding: 10px;
    background: transparent;
    text-align: left;
}
.lesson-kind-options button:hover { background: var(--wash); }
.lesson-admin-card { align-content: start; }
.lesson-admin-card:has(.lesson-delete-toggle:checked) { background: var(--rose); }
.lesson-delete-label { display: inline-flex; align-items: center; gap: 5px; color: var(--rust-dark); cursor: pointer; }
.quiz-description-box { border-left: 4px solid var(--rust); padding: 12px 16px; background: var(--wash); }
#questions-container { display: grid; gap: 18px; }
#questions-container:empty { display: none; }
.question-block, .quiz-question-block, .answer-review {
    min-width: 0;
    display: grid;
    gap: 14px;
    padding: clamp(16px, 3vw, 24px);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    margin: 0;
}
.question-block > .btn-delete { justify-self: end; }
.quiz-question-title, .answer-title { font: 400 1.45rem/1.2 var(--serif); }
.quiz-question-title { padding-inline: 6px; }
.quiz-option-label, .option-row { display: flex; align-items: center; gap: 10px; }
.quiz-option-label { min-height: 44px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 5px; cursor: pointer; }
.quiz-option-label:has(input:checked) { background: var(--mint); border-color: #56775d; }
.options-list { display: grid; gap: 12px; }
.option-item { border-left: 2px solid var(--line); padding-left: 10px; }
.option-explanation-details { margin-top: 5px; }
.option-explanation-body { margin-top: 6px; }
.quiz-score-box {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px 24px;
    padding: clamp(18px, 4vw, 36px);
    border: 1px solid var(--ink);
    border-radius: var(--radius);
    background: var(--yellow);
}
.quiz-score-title { font: 400 clamp(2.3rem, 5vw, 4.5rem)/1 var(--serif); letter-spacing: -.06em; }
.quiz-score-percentage { font: 650 1.2rem/1.3 var(--mono); }
.answer-review { border-left: 4px solid var(--strong-line); margin-top: 12px; }
.answer-correct { border-left-color: #3a6847; }
.answer-incorrect { border-left-color: var(--rust); }
.answer-title { display: flex; gap: 10px; justify-content: space-between; }
.answer-correct .answer-icon { color: #315a40; }
.answer-incorrect .answer-icon { color: var(--rust); }
.perfect-score-banner { display: flex; align-items: center; gap: 12px; padding: 14px; background: var(--mint); }
.perfect-score-icon { font-size: 1.5rem; }
.margin-bottom-1 { margin-block: 14px; }

.admin-access-form { display: flex; flex-wrap: wrap; align-items: end; gap: 8px; }
.admin-access-form .label { flex: 1 1 185px; }
.admin-directory { display: grid; gap: 14px; }
.admin-directory input[type="search"] { max-width: 400px; }
.email-item { padding: 13px 0; border-bottom: 1px solid var(--line); }
.email-item .card-title { margin-right: auto; }
.admin-role-picker { margin: 0; }
.admin-role-picker form { display: grid; gap: 10px; margin-top: 8px; padding: 12px; background: var(--wash); }
.admin-role-option { display: flex; align-items: center; gap: 7px; overflow-wrap: anywhere; }
.approval-list { display: grid; gap: 14px; margin-top: 16px; }
.approval-card h3 { font: 400 1.7rem/1.1 var(--serif); }
.approval-card .detail-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(170px, 100%), 1fr)); gap: 10px; }
.approval-card .form-actions { justify-content: flex-end; }
.lesson-preview { padding: 10px 14px; background: var(--wash); }
.lesson-preview .rich-text { margin-top: 6px; }

.lesson-diagram {
    --text-color: #fffdf6;
    --muted-text-color: #bdc8cb;
    --secondary-color: #35424a;
    --secondary-background-color: #202d36;
    --accent-color-light: #f6d65d;
    color: var(--text-color);
    border: 1px solid var(--ink);
    border-radius: var(--radius);
    background-color: var(--ink);
    background-image: linear-gradient(#fffdf61c 1px, transparent 1px), linear-gradient(90deg, #fffdf61c 1px, transparent 1px);
    background-size: 20px 20px;
}
.lesson-diagram .input { color: var(--text-color); }
.lesson-diagram .input::placeholder { color: var(--muted-text-color); }
.lesson-diagram :focus-visible { outline-color: var(--yellow); }

@media (max-width: 1130px) {
    .course-layout { grid-template-columns: 1fr; }
    .course-sidebar { max-width: 620px; }
}
@media (max-width: 1050px) {
    .leaderboard-grid, .admin-access-grid { grid-template-columns: 1fr; }
}
@media (max-width: 920px) {
    .landing-hero, .forum-layout { grid-template-columns: 1fr; }
    .landing-figure { width: min(100%, 550px); }
    .landing-copy h1 { font-size: clamp(3.1rem, 9vw, 6.4rem); }
}
@media (max-width: 800px) {
    .editor-toolbar { top: 66px; }
}
@media (max-width: 620px) {
    .directory-link { grid-template-columns: 40px minmax(0, 1fr) auto; gap: 7px 11px; }
    .course-tile { width: 40px; height: 40px; }
    .directory-tags, .directory-counts { grid-column: 2; }
    .directory-counts { display: flex; flex-wrap: wrap; gap: 0 10px; }
    .directory-arrow { grid-column: 3; grid-row: 1; }
    .directory-controls { justify-content: flex-start; padding-left: 59px; }
    .dashboard-banner, .workspace-links, .about-grid, .profile-layout, .editor-meta { grid-template-columns: 1fr; }
    .dashboard-figure { max-height: 124px; width: auto; justify-self: start; }
    .outline-link { grid-template-columns: 24px minmax(0, 1fr) auto; }
    .outline-link > .icon { grid-column: 3; grid-row: 1; }
    .outline-link > :is(.badge-owned, .badge-interactive, .badge-grade) { grid-column: 2; }
    .outline-controls { justify-content: flex-start; padding-top: 0; padding-left: 41px; }
}

.email-item { display: grid; gap: 8px; }
.admin-role-actions { display: flex; flex-wrap: wrap; align-items: start; gap: 8px; }
.admin-role-picker[open] { flex: 0 1 290px; max-width: 100%; }
.answer-icon { font: 650 .85rem/1.5 system-ui, sans-serif; }