:root {
    --curriculum-primary: #2563eb;
    --curriculum-dark: #0f172a;
    --curriculum-muted: #64748b;
    --curriculum-border: #e2e8f0;
    --curriculum-soft: #eff6ff;
    --curriculum-success: #16a34a;
    --curriculum-warning: #d97706
}

.curriculum-page,
.lesson-page {
    background: #f8fafc;
    min-height: 100vh;
    color: var(--curriculum-dark)
}

.curriculum-shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto
}

.curriculum-hero {
    padding: 72px 0;
    background: radial-gradient(circle at 80% 20%, #dbeafe 0, transparent 38%), linear-gradient(135deg, #eff6ff, #fff)
}

.curriculum-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(260px, .7fr);
    gap: 48px;
    align-items: center
}

.curriculum-kicker,
.curriculum-section-head span {
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .12em;
    color: var(--curriculum-primary)
}

.curriculum-hero h1,
.subject-header h1,
.admin-curriculum-head h1 {
    font-size: clamp(2rem, 5vw, 3.8rem);
    line-height: 1.08;
    margin: 12px 0 18px
}

.curriculum-hero p,
.subject-header p,
.admin-curriculum-head p {
    color: var(--curriculum-muted);
    font-size: 1.06rem;
    line-height: 1.75;
    max-width: 720px
}

.curriculum-search {
    display: flex;
    gap: 10px;
    margin-top: 28px;
    max-width: 650px
}

.curriculum-search input,
.sidebar-card input,
.admin-filter-row input,
.admin-filter-row select,
.lesson-editor-form input,
.lesson-editor-form select,
.lesson-editor-form textarea {
    width: 100%;
    border: 1px solid var(--curriculum-border);
    border-radius: 12px;
    padding: 13px 14px;
    font: inherit;
    background: #fff
}

.curriculum-search button,
.admin-primary-btn,
.lesson-comment-form button {
    border: 0;
    border-radius: 12px;
    padding: 13px 20px;
    background: var(--curriculum-primary);
    color: #fff;
    font-weight: 700;
    cursor: pointer
}

.curriculum-hero-card {
    background: #fff;
    border: 1px solid #dbeafe;
    border-radius: 24px;
    padding: 30px;
    box-shadow: 0 18px 50px rgba(37, 99, 235, .12)
}

.curriculum-hero-card strong {
    display: block;
    font-size: 3rem;
    color: var(--curriculum-primary)
}

.curriculum-hero-card span {
    font-weight: 700
}

.hero-card-divider {
    height: 1px;
    background: var(--curriculum-border);
    margin: 22px 0
}

.curriculum-hero-card small {
    color: var(--curriculum-muted);
    line-height: 1.7
}

.curriculum-section {
    padding: 64px 0
}

.curriculum-section-head {
    display: flex;
    justify-content: space-between;
    gap: 28px;
    align-items: end;
    margin-bottom: 28px
}

.curriculum-section-head h2 {
    font-size: 2rem;
    margin: 8px 0 0
}

.curriculum-section-head p {
    color: var(--curriculum-muted)
}

.curriculum-subject-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px
}

.curriculum-subject-card {
    display: block;
    background: #fff;
    border: 1px solid var(--curriculum-border);
    border-radius: 20px;
    padding: 24px;
    color: inherit;
    text-decoration: none;
    transition: .2s transform, .2s box-shadow, .2s border
}

.curriculum-subject-card:hover {
    transform: translateY(-4px);
    border-color: #bfdbfe;
    box-shadow: 0 18px 40px rgba(15, 23, 42, .08)
}

.subject-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center
}

.subject-card-icon {
    display: grid;
    place-items: center;
    width: 54px;
    height: 54px;
    border-radius: 16px;
    background: var(--curriculum-soft);
    font-size: 1.7rem
}

.subject-card-count {
    font-size: .8rem;
    color: var(--curriculum-muted)
}

.curriculum-subject-card h3 {
    font-size: 1.25rem;
    margin: 18px 0 8px
}

.curriculum-subject-card p {
    color: var(--curriculum-muted);
    min-height: 44px
}

.subject-grade-list {
    display: flex;
    gap: 8px;
    margin-top: 18px
}

.subject-grade-list span {
    background: #f1f5f9;
    border-radius: 999px;
    padding: 6px 10px;
    font-size: .78rem;
    font-weight: 700
}

.curriculum-benefits {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    padding-top: 0
}

.curriculum-benefits article {
    display: flex;
    gap: 15px;
    background: #fff;
    border: 1px solid var(--curriculum-border);
    border-radius: 18px;
    padding: 22px
}

.curriculum-benefits article>span {
    font-size: 1.7rem
}

.curriculum-benefits h3 {
    margin: 0 0 8px
}

.curriculum-benefits p {
    margin: 0;
    color: var(--curriculum-muted);
    line-height: 1.6
}

.subject-header {
    padding: 34px 0 26px
}

.curriculum-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    align-items: center;
    padding: 24px 0;
    color: var(--curriculum-muted);
    font-size: .9rem
}

.curriculum-breadcrumb a {
    color: var(--curriculum-primary);
    text-decoration: none
}

.subject-title-row {
    display: flex;
    gap: 20px;
    align-items: center
}

.subject-icon-large {
    display: grid;
    place-items: center;
    width: 78px;
    height: 78px;
    border-radius: 22px;
    background: var(--curriculum-soft);
    font-size: 2.3rem
}

.subject-header h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin: 6px 0
}

.grade-tabs {
    display: flex;
    gap: 10px;
    margin-top: 28px
}

.grade-tabs button {
    border: 1px solid var(--curriculum-border);
    background: #fff;
    border-radius: 12px;
    padding: 11px 22px;
    font-weight: 700;
    cursor: pointer
}

.grade-tabs button.is-active {
    background: var(--curriculum-primary);
    color: #fff;
    border-color: var(--curriculum-primary)
}

.curriculum-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 290px;
    gap: 28px;
    padding-bottom: 70px
}

.course-overview {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
    color: #fff;
    border-radius: 22px;
    padding: 25px;
    margin-bottom: 20px
}

.course-overview h2 {
    margin: 6px 0 0
}

.course-progress {
    min-width: 250px
}

.course-progress>div:first-child {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px
}

.progress-track {
    height: 9px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .28);
    overflow: hidden
}

.progress-track span {
    display: block;
    height: 100%;
    width: 0;
    background: #fff;
    border-radius: inherit;
    transition: width .3s
}

.chapter-card {
    background: #fff;
    border: 1px solid var(--curriculum-border);
    border-radius: 18px;
    overflow: hidden;
    margin-bottom: 16px
}

.chapter-toggle {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    border: 0;
    background: #fff;
    padding: 20px;
    cursor: pointer
}

.chapter-toggle h3 {
    margin: 4px 0 0
}

.chapter-toggle small {
    color: var(--curriculum-muted)
}

.chapter-lessons {
    border-top: 1px solid var(--curriculum-border)
}

.lesson-row {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) auto;
    gap: 14px;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid #f1f5f9;
    color: inherit;
    text-decoration: none
}

.lesson-row:last-child {
    border-bottom: 0
}

.lesson-row:hover {
    background: #f8fafc
}

.lesson-order {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: #f1f5f9;
    font-weight: 800
}

.lesson-row h4 {
    margin: 0 0 5px
}

.lesson-row p {
    margin: 0;
    color: var(--curriculum-muted);
    font-size: .88rem
}

.lesson-state {
    font-size: .78rem;
    font-weight: 700;
    padding: 6px 9px;
    border-radius: 999px;
    background: #fff7ed;
    color: var(--curriculum-warning)
}

.lesson-state.published {
    background: #ecfdf5;
    color: var(--curriculum-success)
}

.lesson-state.completed {
    background: #dcfce7;
    color: #15803d
}

.curriculum-sidebar {
    display: flex;
    flex-direction: column;
    gap: 16px
}

.sidebar-card {
    background: #fff;
    border: 1px solid var(--curriculum-border);
    border-radius: 16px;
    padding: 18px
}

.sidebar-card h3 {
    margin: 0 0 14px
}

.sidebar-card p {
    color: var(--curriculum-muted);
    font-size: .9rem
}

.status-dot {
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    margin-right: 7px
}

.status-dot.published {
    background: var(--curriculum-success)
}

.status-dot.draft {
    background: var(--curriculum-warning)
}

.status-dot.completed {
    background: #2563eb
}

.curriculum-empty {
    padding: 30px;
    text-align: center;
    color: var(--curriculum-muted);
    background: #fff;
    border: 1px dashed var(--curriculum-border);
    border-radius: 16px
}

.lesson-hero {
    padding: 46px 0;
    background: linear-gradient(135deg, #eff6ff, #fff);
    border-block: 1px solid #dbeafe
}

.lesson-hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin: 10px 0
}

.lesson-number {
    font-weight: 800;
    color: var(--curriculum-primary);
    letter-spacing: .12em
}

.lesson-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px
}

.lesson-meta span {
    background: #fff;
    border: 1px solid var(--curriculum-border);
    border-radius: 999px;
    padding: 8px 12px;
    font-size: .85rem
}

.lesson-layout {
    display: grid;
    grid-template-columns: 210px minmax(0, 1fr) 230px;
    gap: 24px;
    padding: 42px 0
}

.lesson-toc,
.lesson-actions {
    position: relative
}

.lesson-toc .sidebar-card,
.lesson-actions .sidebar-card {
    position: sticky;
    top: 92px
}

.lesson-toc nav {
    display: flex;
    flex-direction: column;
    gap: 6px
}

.lesson-toc a {
    padding: 8px 10px;
    border-radius: 8px;
    color: var(--curriculum-muted);
    text-decoration: none;
    font-size: .9rem
}

.lesson-toc a:hover {
    background: #eff6ff;
    color: var(--curriculum-primary)
}

.lesson-content {
    background: #fff;
    border: 1px solid var(--curriculum-border);
    border-radius: 20px;
    padding: clamp(22px, 4vw, 44px);
    line-height: 1.8;
    min-height: 500px
}

.lesson-section {
    scroll-margin-top: 90px;
    padding-bottom: 32px;
    margin-bottom: 32px;
    border-bottom: 1px solid var(--curriculum-border)
}

.lesson-section:last-child {
    border-bottom: 0;
    margin-bottom: 0
}

.lesson-section h2 {
    font-size: 1.65rem;
    margin-top: 0
}

.lesson-section img {
    max-width: 100%;
    height: auto;
    border-radius: 12px
}

.lesson-section table {
    width: 100%;
    border-collapse: collapse
}

.lesson-section td,
.lesson-section th {
    border: 1px solid var(--curriculum-border);
    padding: 10px
}

.lesson-section pre {
    white-space: pre-wrap;
    background: #0f172a;
    color: #e2e8f0;
    padding: 16px;
    border-radius: 12px;
    overflow: auto
}

.lesson-placeholder {
    color: var(--curriculum-muted);
    font-style: italic
}

.complete-lesson-btn {
    width: 100%;
    border: 0;
    border-radius: 12px;
    padding: 13px;
    background: var(--curriculum-primary);
    color: #fff;
    font-weight: 700;
    cursor: pointer
}

.complete-lesson-btn.is-complete {
    background: var(--curriculum-success)
}

.lesson-actions small {
    display: block;
    color: var(--curriculum-muted);
    line-height: 1.5;
    margin-top: 10px
}

.lesson-nav-link {
    display: block;
    padding: 10px 0;
    color: var(--curriculum-primary);
    text-decoration: none
}

.lesson-nav-link.is-disabled {
    pointer-events: none;
    color: #94a3b8
}

.related-section,
.lesson-discussion {
    padding: 28px 0 60px
}

.related-document-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px
}

.related-document-card {
    background: #fff;
    border: 1px solid var(--curriculum-border);
    border-radius: 16px;
    padding: 18px;
    color: inherit;
    text-decoration: none
}

.related-document-card h3 {
    font-size: 1rem
}

.related-document-card p {
    color: var(--curriculum-muted);
    font-size: .86rem
}

.lesson-comment-form {
    display: grid;
    gap: 12px;
    background: #fff;
    border: 1px solid var(--curriculum-border);
    border-radius: 16px;
    padding: 18px
}

.lesson-comment-form textarea {
    resize: vertical;
    border: 1px solid var(--curriculum-border);
    border-radius: 12px;
    padding: 13px;
    font: inherit
}

.lesson-comment-form button {
    justify-self: end
}

.lesson-comments {
    display: grid;
    gap: 12px;
    margin-top: 18px
}

.lesson-comment {
    display: flex;
    gap: 12px;
    background: #fff;
    border: 1px solid var(--curriculum-border);
    border-radius: 14px;
    padding: 16px
}

.lesson-comment img {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover
}

.lesson-comment h4 {
    margin: 0 0 5px
}

.lesson-comment p {
    margin: 0;
    line-height: 1.6
}

.lesson-comment time {
    color: var(--curriculum-muted);
    font-size: .78rem
}

.admin-curriculum-page {
    padding-bottom: 60px
}

.admin-curriculum-head {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    align-items: center;
    padding: 20px 0 30px
}

.admin-curriculum-head h1 {
    font-size: 2.5rem
}

.admin-filter-row {
    display: grid;
    grid-template-columns: 220px 180px minmax(0, 1fr);
    gap: 12px;
    margin-bottom: 18px
}

.admin-lesson-list {
    display: grid;
    gap: 12px
}

.admin-lesson-item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 18px;
    background: #fff;
    border: 1px solid var(--curriculum-border);
    border-radius: 16px;
    padding: 18px
}

.admin-lesson-item h3 {
    margin: 5px 0
}

.admin-lesson-item p {
    margin: 0;
    color: var(--curriculum-muted)
}

.admin-item-actions {
    display: flex;
    gap: 8px;
    align-items: center
}

.admin-item-actions button {
    border: 1px solid var(--curriculum-border);
    background: #fff;
    border-radius: 9px;
    padding: 9px 11px;
    cursor: pointer
}

.admin-item-actions .danger {
    color: #dc2626
}

.curriculum-modal[hidden] {
    display: none
}

.curriculum-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: grid;
    place-items: center;
    padding: 20px
}

.curriculum-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, .65)
}

.curriculum-modal-card {
    position: relative;
    width: min(900px, 100%);
    max-height: 92vh;
    overflow: auto;
    background: #fff;
    border-radius: 22px;
    padding: 24px
}

.modal-head {
    display: flex;
    justify-content: space-between;
    align-items: start
}

.modal-head h2 {
    margin: 6px 0
}

.modal-head>button {
    border: 0;
    background: transparent;
    font-size: 2rem;
    cursor: pointer
}

.lesson-editor-form {
    display: grid;
    gap: 15px
}

.lesson-editor-form label {
    display: grid;
    gap: 7px;
    font-weight: 700
}

.lesson-editor-form small {
    font-weight: 400;
    color: var(--curriculum-muted)
}

.editor-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px
}

.editor-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px
}

.editor-actions button {
    border: 1px solid var(--curriculum-border);
    border-radius: 10px;
    padding: 11px 18px;
    cursor: pointer
}

.is-hidden {
    display: none !important
}

@media(max-width:980px) {

    .curriculum-hero-grid,
    .curriculum-layout,
    .lesson-layout {
        grid-template-columns: 1fr
    }

    .curriculum-subject-grid {
        grid-template-columns: repeat(2, 1fr)
    }

    .lesson-toc,
    .lesson-actions {
        order: 0
    }

    .lesson-toc .sidebar-card,
    .lesson-actions .sidebar-card {
        position: static
    }

    .lesson-toc {
        display: none
    }

    .related-document-grid {
        grid-template-columns: repeat(2, 1fr)
    }
}

@media(max-width:680px) {
    .curriculum-shell {
        width: min(100% - 20px, 1180px)
    }

    .curriculum-hero {
        padding: 45px 0
    }

    .curriculum-subject-grid,
    .curriculum-benefits,
    .related-document-grid {
        grid-template-columns: 1fr
    }

    .curriculum-section-head,
    .course-overview,
    .admin-curriculum-head {
        align-items: stretch;
        flex-direction: column
    }

    .course-progress {
        min-width: 0
    }

    .grade-tabs {
        overflow: auto
    }

    .subject-title-row {
        align-items: flex-start
    }

    .subject-icon-large {
        width: 60px;
        height: 60px
    }

    .lesson-row {
        grid-template-columns: 38px 1fr
    }

    .lesson-state {
        grid-column: 2;
        justify-self: start
    }

    .admin-filter-row,
    .editor-grid {
        grid-template-columns: 1fr
    }

    .admin-lesson-item {
        grid-template-columns: 1fr
    }

    .admin-item-actions {
        justify-content: flex-start
    }

    .curriculum-search {
        flex-direction: column
    }
}

/* Curriculum Admin Editor V2 */
.curriculum-editor-modal {
    padding: 14px
}

.curriculum-editor-card {
    width: min(1180px, 100%);
    max-height: 96vh;
    padding: 0;
    overflow: auto;
    background: #f8fafc
}

.curriculum-editor-head {
    position: sticky;
    top: 0;
    z-index: 20;
    padding: 22px 26px;
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid var(--curriculum-border);
    backdrop-filter: blur(12px)
}

.curriculum-editor-head p {
    margin: 4px 0 0;
    color: var(--curriculum-muted);
    font-size: .88rem
}

.curriculum-v2-form {
    padding: 22px 26px 100px;
    gap: 20px
}

.editor-panel {
    background: #fff;
    border: 1px solid var(--curriculum-border);
    border-radius: 18px;
    padding: 22px;
    box-shadow: 0 8px 25px rgba(15, 23, 42, .035)
}

.editor-section-title {
    margin-bottom: 20px
}

.editor-section-title>div {
    display: flex;
    gap: 12px;
    align-items: flex-start
}

.editor-section-title>div>span {
    display: grid;
    place-items: center;
    flex: 0 0 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--curriculum-primary);
    color: #fff;
    font-weight: 800
}

.editor-section-title h3 {
    margin: 1px 0 4px;
    font-size: 1.08rem
}

.editor-section-title p {
    margin: 0;
    color: var(--curriculum-muted);
    font-size: .88rem
}

.editor-title-field input {
    font-size: 1.35rem;
    font-weight: 750;
    padding: 16px
}

.editor-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr))
}

.editor-grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr))
}

.editor-span-2 {
    grid-column: span 2
}

.rich-editor-toolbar {
    position: sticky;
    top: 92px;
    z-index: 15;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 10px;
    background: #f8fafc;
    border: 1px solid var(--curriculum-border);
    border-radius: 13px 13px 0 0
}

.rich-editor-toolbar button,
.rich-editor-toolbar select {
    min-height: 36px;
    border: 1px solid var(--curriculum-border);
    border-radius: 8px;
    background: #fff;
    padding: 7px 10px;
    font: inherit;
    font-size: .84rem;
    cursor: pointer
}

.rich-editor-toolbar button:hover {
    background: #eff6ff;
    border-color: #bfdbfe
}

.rich-editor-toolbar select {
    width: auto
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--curriculum-border);
    margin: 0 2px
}

.editor-content-tabs {
    display: flex;
    gap: 6px;
    padding: 10px 10px 0;
    background: #fff;
    border-inline: 1px solid var(--curriculum-border);
    overflow: auto
}

.editor-content-tabs button {
    white-space: nowrap;
    border: 0;
    border-radius: 9px 9px 0 0;
    padding: 11px 15px;
    background: #f1f5f9;
    color: #475569;
    font-weight: 700;
    cursor: pointer
}

.editor-content-tabs button.is-active {
    background: var(--curriculum-primary);
    color: #fff
}

.rich-editor-wrap {
    border: 1px solid var(--curriculum-border);
    border-radius: 0 0 13px 13px;
    background: #fff
}

.rich-editor {
    min-height: 390px;
    padding: 26px;
    outline: none;
    line-height: 1.75;
    font-size: 1rem
}

.rich-editor:empty:before {
    content: attr(data-placeholder);
    color: #94a3b8;
    pointer-events: none
}

.rich-editor h2 {
    font-size: 1.65rem;
    margin: 1.1em 0 .5em
}

.rich-editor h3 {
    font-size: 1.3rem;
    margin: 1em 0 .45em
}

.rich-editor blockquote {
    margin: 18px 0;
    padding: 12px 18px;
    border-left: 4px solid var(--curriculum-primary);
    background: #eff6ff;
    color: #334155
}

.rich-editor pre {
    white-space: pre-wrap;
    padding: 15px;
    border-radius: 10px;
    background: #0f172a;
    color: #e2e8f0
}

.rich-editor img {
    max-width: 100%;
    height: auto;
    border-radius: 12px
}

.rich-editor figure {
    margin: 22px 0;
    text-align: center
}

.rich-editor figcaption {
    margin-top: 7px;
    color: var(--curriculum-muted);
    font-size: .85rem
}

.rich-editor table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0
}

.rich-editor th,
.rich-editor td {
    border: 1px solid var(--curriculum-border);
    padding: 10px;
    min-width: 80px
}

.rich-editor th {
    background: #f8fafc
}

.lesson-formula {
    margin: 16px 0;
    padding: 14px;
    text-align: center;
    border: 1px solid #bfdbfe;
    border-radius: 10px;
    background: #eff6ff;
    font-family: "Cambria Math", serif;
    font-size: 1.15rem
}

.editor-sticky-actions {
    position: sticky;
    bottom: 0;
    z-index: 18;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    margin: 0 -26px -100px;
    padding: 14px 26px;
    background: rgba(255, 255, 255, .97);
    border-top: 1px solid var(--curriculum-border);
    box-shadow: 0 -8px 25px rgba(15, 23, 42, .06);
    backdrop-filter: blur(12px)
}

.editor-sticky-left {
    display: flex;
    gap: 10px;
    align-items: center
}

.editor-secondary-btn {
    border: 1px solid #bfdbfe !important;
    background: #eff6ff !important;
    color: #1d4ed8 !important;
    font-weight: 700
}

.editor-text-btn {
    border: 0 !important;
    background: transparent !important;
    color: var(--curriculum-muted);
    padding-inline: 8px !important
}

.curriculum-preview-card {
    width: min(900px, 100%);
    max-height: 92vh
}

.curriculum-admin-preview {
    margin-top: 18px
}

.curriculum-preview-cover {
    display: block;
    width: 100%;
    max-height: 360px;
    object-fit: cover;
    border-radius: 15px;
    margin-bottom: 22px
}

.curriculum-preview-summary {
    font-size: 1.08rem;
    color: #475569;
    padding: 16px 18px;
    background: #f8fafc;
    border-radius: 12px
}

.curriculum-admin-preview .lesson-formula {
    font-family: "Cambria Math", serif
}

.curriculum-v2-form small {
    justify-self: end
}

.curriculum-v2-form textarea {
    resize: vertical
}

@media(max-width:900px) {

    .editor-grid-3,
    .editor-grid-4 {
        grid-template-columns: 1fr 1fr
    }

    .editor-span-2 {
        grid-column: span 1
    }

    .rich-editor-toolbar {
        top: 88px
    }

    .editor-sticky-actions {
        align-items: stretch;
        flex-direction: column
    }

    .editor-sticky-left,
    .editor-actions {
        width: 100%;
        justify-content: flex-end
    }
}

@media(max-width:620px) {
    .curriculum-editor-modal {
        padding: 0
    }

    .curriculum-editor-card {
        max-height: 100vh;
        border-radius: 0
    }

    .curriculum-editor-head,
    .curriculum-v2-form {
        padding-left: 14px;
        padding-right: 14px
    }

    .editor-panel {
        padding: 15px
    }

    .editor-grid-3,
    .editor-grid-4 {
        grid-template-columns: 1fr
    }

    .editor-sticky-actions {
        margin-left: -14px;
        margin-right: -14px;
        padding-left: 14px;
        padding-right: 14px
    }

    .editor-sticky-left,
    .editor-actions {
        flex-wrap: wrap
    }

    .editor-sticky-left button,
    .editor-actions button {
        flex: 1
    }

    .rich-editor {
        min-height: 330px;
        padding: 18px
    }

    .rich-editor-toolbar {
        position: static
    }

    .toolbar-divider {
        display: none
    }
}
/* Curriculum search results */
.curriculum-search-results{margin-top:22px}
.curriculum-search-results[hidden]{display:none}
.curriculum-search-results-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
.curriculum-search-results-head h2{margin:4px 0 0;font-size:clamp(1.25rem,2vw,1.65rem)}
.curriculum-search-results-head p{margin:0;color:var(--text-muted,#64748b)}
.curriculum-lesson-results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.curriculum-lesson-result{display:flex;align-items:center;gap:14px;padding:16px;border:1px solid rgba(148,163,184,.25);border-radius:16px;background:#fff;text-decoration:none;color:inherit;transition:.2s ease}
.curriculum-lesson-result:hover{transform:translateY(-2px);border-color:rgba(37,99,235,.45);box-shadow:0 12px 30px rgba(15,23,42,.08)}
.curriculum-lesson-result-icon{display:grid;place-items:center;flex:0 0 44px;width:44px;height:44px;border-radius:13px;background:#eff6ff;font-size:1.25rem}
.curriculum-lesson-result div{min-width:0;flex:1}
.curriculum-lesson-result small{display:block;color:#2563eb;font-weight:700;margin-bottom:4px}
.curriculum-lesson-result h3{margin:0 0 4px;font-size:1rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.curriculum-lesson-result p{margin:0;color:#64748b;font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.curriculum-lesson-result-arrow{font-size:1.2rem;color:#94a3b8}
@media(max-width:720px){.curriculum-lesson-results{grid-template-columns:1fr}.curriculum-search-results-head{align-items:flex-start;flex-direction:column}.curriculum-lesson-result{padding:14px}}