:root {
    --pearl-primary: #1b5f8f;
    --pearl-primary-dark: #124564;
    --pearl-accent: #d99b2b;
    --pearl-ink: #172033;
    --pearl-muted: #5d6678;
    --pearl-surface: #f6f8fb;
    --pearl-border: #dfe5ee;
    --pearl-shadow: 0 10px 28px rgba(23, 32, 51, .07);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    color: var(--pearl-ink);
    background: #fff;
    font-size: 16px;
    line-height: 1.55;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
}

main {
    min-height: 62vh;
}

.container {
    --bs-gutter-x: 1.25rem;
}

a {
    color: var(--pearl-primary);
    text-decoration: none;
}

a:hover {
    color: var(--pearl-primary-dark);
}

.navbar-brand {
    color: var(--pearl-primary-dark);
    letter-spacing: 0;
    white-space: nowrap;
}

.navbar {
    --bs-navbar-padding-y: .65rem;
}

.navbar-nav {
    flex-wrap: wrap;
}

.nav-link {
    font-size: .94rem;
}

.nav-link.active {
    color: var(--pearl-primary) !important;
    font-weight: 600;
}

.btn-primary {
    --bs-btn-bg: var(--pearl-primary);
    --bs-btn-border-color: var(--pearl-primary);
    --bs-btn-hover-bg: var(--pearl-primary-dark);
    --bs-btn-hover-border-color: var(--pearl-primary-dark);
}

.btn-outline-primary {
    --bs-btn-color: var(--pearl-primary);
    --bs-btn-border-color: var(--pearl-primary);
    --bs-btn-hover-bg: var(--pearl-primary);
    --bs-btn-hover-border-color: var(--pearl-primary);
}

.hero-section,
.course-hero {
    background: linear-gradient(180deg, #eef6fb 0%, #fff 100%);
}

.hero-section .container,
.course-hero .container {
    padding-top: clamp(2rem, 4vw, 3.5rem) !important;
    padding-bottom: clamp(2rem, 4vw, 3.5rem) !important;
}

.section-muted {
    background: var(--pearl-surface);
}

.eyebrow {
    color: var(--pearl-accent);
    font-size: .82rem;
    font-weight: 700;
    text-transform: uppercase;
}

.status-panel,
.feature-tile,
.empty-state,
.course-card,
.quote-card,
.post-card,
.form-panel,
.contact-card,
.enroll-panel,
.catalog-sidebar,
.policy-block,
.verification-result {
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: #fff;
}

.status-panel {
    padding: 1.5rem;
    box-shadow: 0 12px 35px rgba(23, 32, 51, .08);
}

.status-panel li {
    padding: .55rem 0;
    border-bottom: 1px solid var(--pearl-border);
}

.status-panel li:last-child {
    border-bottom: 0;
}

.feature-tile {
    min-height: 100%;
    padding: 1.25rem;
}

.feature-tile p,
.site-footer,
.empty-state {
    color: var(--pearl-muted);
}

.page-heading {
    background: var(--pearl-surface);
}

.empty-state {
    padding: 1.5rem;
}

.hero-image,
.content-image,
.article-image {
    display: block;
    width: 100%;
    border-radius: 8px;
    object-fit: cover;
    background: var(--pearl-surface);
}

.hero-image {
    aspect-ratio: 4 / 3;
    max-height: 360px;
    box-shadow: var(--pearl-shadow);
}

.course-hero-image-frame {
    width: 100%;
    overflow: hidden;
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--pearl-shadow);
}

.course-hero-image-frame img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
    background: #fff;
}

.content-image {
    aspect-ratio: 5 / 4;
    max-height: 340px;
}

.article-image {
    aspect-ratio: 16 / 8;
    max-height: 360px;
    margin-bottom: 1.5rem;
}

.search-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: .75rem;
    max-width: 620px;
}

.search-panel-wide {
    max-width: 760px;
}

.section-heading {
    margin-bottom: 1.5rem;
}

.section-heading h2 {
    margin-bottom: 0;
}

.course-choice-heading,
.course-choice-title {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: end;
}

.course-choice-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
}

.course-choice-block {
    display: grid;
    gap: 1rem;
    margin-top: 1.5rem;
}

.course-choice-block + .course-choice-block {
    border-top: 1px solid var(--pearl-border);
    padding-top: 1.5rem;
}

.course-choice-title h3 {
    margin: .15rem 0 0;
    font-size: clamp(1.25rem, 2vw, 1.6rem);
}

.course-choice-title span {
    color: var(--pearl-accent);
    font-size: .78rem;
    font-weight: 800;
    text-transform: uppercase;
}

.course-choice-title a {
    flex: 0 0 auto;
    font-weight: 700;
}

.category-tile {
    display: grid;
    gap: .5rem;
    height: 100%;
    padding: 1.25rem;
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: #fff;
    color: var(--pearl-ink);
}

.category-tile span {
    font-weight: 700;
}

.category-tile small {
    color: var(--pearl-muted);
}

.course-card {
    height: 100%;
    overflow: hidden;
    box-shadow: var(--pearl-shadow);
}

.post-card img,
.gallery-item img {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 10;
    max-height: 220px;
    object-fit: cover;
}

.course-card img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
    background: #fff;
}

.course-card-body {
    display: grid;
    gap: .75rem;
    padding: 1.15rem;
}

.course-card-body h2,
.course-card-body p {
    margin: 0;
}

.course-card h2 a,
.post-card h2 a {
    color: var(--pearl-ink);
}

.course-card p,
.post-card p,
.quote-card p {
    color: var(--pearl-muted);
}

.course-meta,
.course-card-footer,
.course-facts {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    align-items: center;
}

.course-meta span,
.course-facts span {
    display: inline-flex;
    min-height: 28px;
    align-items: center;
    padding: .25rem .6rem;
    border-radius: 999px;
    background: #edf5f9;
    color: var(--pearl-primary-dark);
    font-size: .84rem;
    font-weight: 600;
}

.course-card-footer {
    justify-content: space-between;
    border-top: 1px solid var(--pearl-border);
    padding-top: .9rem;
}

.course-card-footer span,
.post-card time {
    color: var(--pearl-muted);
    font-size: .9rem;
}

.catalog-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
}

.catalog-sidebar {
    padding: 1.25rem;
    position: sticky;
    top: 1rem;
}

.category-nav {
    display: grid;
    gap: .5rem;
}

.category-nav a {
    padding: .55rem .7rem;
    border-radius: 6px;
    background: var(--pearl-surface);
}

.outcome-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .8rem;
}

.outcome-item,
.curriculum-item,
.curriculum-section {
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    padding: 1rem;
    background: #fff;
}

.curriculum-list {
    display: grid;
    gap: .75rem;
}

.curriculum-item,
.curriculum-section-title {
    display: flex;
    gap: .85rem;
    align-items: flex-start;
}

.curriculum-number {
    flex: 0 0 auto;
    display: inline-grid;
    width: 34px;
    height: 34px;
    place-items: center;
    border-radius: 50%;
    background: var(--pearl-primary);
    color: #fff;
    font-weight: 700;
}

.curriculum-section-title p {
    margin: .2rem 0 0;
    color: var(--pearl-muted);
}

.curriculum-lessons {
    display: grid;
    gap: .55rem;
    margin: .85rem 0 0 3.05rem;
    padding: 0;
    list-style: none;
}

.curriculum-lessons li {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: .65rem .75rem;
    border-radius: 6px;
    background: var(--pearl-surface);
}

.curriculum-lessons em {
    color: var(--pearl-muted);
    font-size: .88rem;
    font-style: normal;
    white-space: nowrap;
}

.enroll-panel,
.contact-card,
.form-panel,
.quote-card,
.policy-block,
.verification-result {
    padding: 1.25rem;
}

.auth-section {
    background: linear-gradient(180deg, #eef6fb 0%, #fff 70%);
}

.auth-shell {
    display: grid;
    grid-template-columns: minmax(0, .85fr) minmax(320px, 1fr);
    gap: 2rem;
    align-items: start;
}

.form-footer {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1rem;
    font-size: .94rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.dashboard-tile,
.profile-panel {
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: #fff;
    padding: 1.25rem;
}

.dashboard-tile {
    display: grid;
    gap: .5rem;
    color: var(--pearl-ink);
}

.dashboard-tile span,
.profile-panel dd {
    color: var(--pearl-muted);
}

.profile-panel dl {
    display: grid;
    gap: 0;
    margin: 0;
}

.profile-panel dl > div {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 1rem;
    padding: .85rem 0;
    border-bottom: 1px solid var(--pearl-border);
}

.profile-panel dl > div:last-child {
    border-bottom: 0;
}

.profile-panel dt,
.profile-panel dd {
    margin: 0;
}

.price {
    display: block;
    margin-bottom: .5rem;
    color: var(--pearl-primary-dark);
    font-size: 2rem;
    font-weight: 800;
}

.quote-card {
    display: grid;
    gap: .65rem;
}

.quote-card small {
    color: var(--pearl-muted);
}

.rating {
    color: var(--pearl-accent);
    font-weight: 700;
}

.post-card {
    display: grid;
    overflow: hidden;
}

.post-card > div {
    padding: 1.25rem;
}

.article-container {
    max-width: 860px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
}

.gallery-item {
    margin: 0;
    overflow: hidden;
    border-radius: 8px;
    border: 1px solid var(--pearl-border);
    background: #fff;
}

.gallery-item figcaption {
    padding: .85rem 1rem;
    font-weight: 700;
}

.footer-links {
    display: grid;
    gap: .45rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-bottom a {
    color: var(--pearl-primary-dark);
    font-weight: 600;
}

.admin-nav,
.student-nav {
    background: #fff;
}

.admin-nav .container,
.student-nav .container {
    display: flex;
    gap: .35rem;
    overflow-x: auto;
    padding-top: .65rem;
    padding-bottom: .65rem;
}

.admin-nav a,
.student-nav a {
    flex: 0 0 auto;
    padding: .45rem .7rem;
    border-radius: 6px;
    color: var(--pearl-ink);
    font-weight: 600;
}

.admin-nav a:hover,
.student-nav a:hover {
    background: var(--pearl-surface);
}

.admin-page {
    background: #fff;
}

.admin-heading {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.admin-heading h1 {
    margin: 0;
    font-size: clamp(1.6rem, 2vw, 2.2rem);
}

.admin-panel,
.admin-stat {
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: #fff;
}

.admin-panel {
    padding: 1.15rem;
    box-shadow: var(--pearl-shadow);
}

.course-thumbnail-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 150px;
    overflow: hidden;
    border: 1px dashed var(--pearl-border);
    border-radius: 8px;
    background: #f8fafc;
    color: var(--pearl-muted);
    font-size: .92rem;
}

.course-thumbnail-preview img {
    width: 100%;
    height: auto;
    object-fit: contain;
    background: #fff;
    display: block;
}

.admin-split {
    display: grid;
    grid-template-columns: minmax(280px, .82fr) minmax(0, 1.18fr);
    gap: 1.25rem;
    align-items: start;
}

.admin-table {
    margin-bottom: 0;
    min-width: 760px;
}

.admin-table th {
    color: var(--pearl-muted);
    font-size: .82rem;
    text-transform: uppercase;
}

.admin-table td {
    vertical-align: middle;
}

.admin-table span {
    color: var(--pearl-muted);
    font-size: .9rem;
}

.admin-stat-grid,
.admin-action-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.admin-stat {
    display: grid;
    gap: .25rem;
    padding: 1rem;
}

.admin-stat span {
    color: var(--pearl-muted);
    font-weight: 600;
}

.admin-stat strong {
    color: var(--pearl-primary-dark);
    font-size: 2rem;
}

.compact-select {
    width: auto;
    min-width: 160px;
}

.curriculum-admin-section {
    border-top: 1px solid var(--pearl-border);
    padding: 1rem 0;
}

.curriculum-admin-section:first-of-type {
    border-top: 0;
}

.curriculum-section-heading {
    display: flex;
    justify-content: space-between;
    gap: .75rem;
    align-items: center;
}

.curriculum-admin-lesson {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: .75rem;
    align-items: center;
    padding: .65rem .75rem;
    border-radius: 6px;
    background: var(--pearl-surface);
    margin-top: .5rem;
}

.editable-lesson-row form:first-child {
    display: grid;
    grid-template-columns: 90px minmax(180px, 1fr) 90px 130px auto;
    gap: .55rem;
    align-items: center;
}

.curriculum-admin-lesson span,
.curriculum-admin-lesson em {
    color: var(--pearl-muted);
    font-size: .9rem;
    font-style: normal;
}

.lesson-asset-fields {
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: var(--pearl-surface);
    padding: 1rem;
}

.lesson-asset-fields h3 {
    margin-bottom: .75rem;
}

.code-textarea {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .92rem;
    line-height: 1.55;
}

.lesson-asset-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    padding: .85rem 0;
    border-top: 1px solid var(--pearl-border);
}

.lesson-asset-row:first-of-type {
    border-top: 0;
}

.lesson-asset-row div {
    display: flex;
    flex-wrap: wrap;
    gap: .55rem;
    align-items: center;
}

.lesson-asset-row span {
    color: var(--pearl-muted);
    font-size: .88rem;
}

.student-summary-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.student-summary,
.learning-card,
.workspace-sidebar,
.workspace-section,
.lesson-player,
.lesson-side-panel {
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: #fff;
}

.student-summary {
    display: grid;
    gap: .25rem;
    padding: 1rem;
}

.student-summary span,
.learning-card p,
.lesson-header p,
.lesson-side-panel p,
.certificate-ready-row span {
    color: var(--pearl-muted);
}

.student-summary strong {
    color: var(--pearl-primary-dark);
    font-size: 2rem;
}

.student-section-heading {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
}

.student-section-heading h2 {
    margin: 0;
    font-size: 1.35rem;
}

.learning-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.learning-card {
    display: grid;
    gap: 1rem;
    min-height: 100%;
    padding: 1.15rem;
}

.learning-card h3 {
    font-size: 1.08rem;
    margin: .6rem 0 .45rem;
}

.learning-tag {
    display: inline-flex;
    padding: .2rem .55rem;
    border-radius: 999px;
    background: #edf5f9;
    color: var(--pearl-primary-dark);
    font-size: .8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.learning-progress,
.workspace-progress {
    height: .55rem;
    background: #e8edf3;
}

.learning-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
}

.workspace-layout,
.lesson-layout {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 1.25rem;
    align-items: start;
}

.lesson-layout {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 270px);
}

.workspace-sidebar,
.lesson-side-panel {
    padding: 1.15rem;
    position: sticky;
    top: 1rem;
}

.lesson-side-panel {
    align-self: start;
}

.workspace-content {
    display: grid;
    gap: 1rem;
}

.workspace-section {
    padding: 1rem;
}

.lesson-row {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr) 80px;
    gap: .75rem;
    align-items: center;
    padding: .75rem;
    border-radius: 6px;
    background: var(--pearl-surface);
    color: var(--pearl-ink);
    margin-top: .6rem;
}

.lesson-row span,
.lesson-row em {
    color: var(--pearl-muted);
    font-size: .9rem;
    font-style: normal;
}

.lesson-shell {
    background: var(--pearl-surface);
    min-height: 70vh;
}

.lesson-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: start;
    margin-bottom: 1.25rem;
}

.lesson-header h1 {
    margin: 0 0 .5rem;
    font-size: clamp(1.7rem, 2.4vw, 2.4rem);
}

.lesson-player {
    padding: 1.5rem;
}

.lesson-body {
    font-size: 1.05rem;
    line-height: 1.75;
    max-width: 78ch;
}

.lesson-body-wide {
    max-width: none;
}

.lesson-body h2,
.lesson-body h3 {
    color: var(--pearl-ink);
    margin-top: 1.4rem;
}

.lesson-body pre {
    max-width: 100%;
    overflow-x: auto;
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: #15202b;
    color: #f7fbfc;
    padding: 1rem;
    line-height: 1.55;
}

.lesson-body code {
    font-size: .92rem;
    white-space: pre;
}

.enhanced-lesson {
    display: grid;
    gap: 1.25rem;
}

.enhanced-lesson > p,
.enhanced-lesson > ul,
.enhanced-lesson > ol {
    max-width: 82ch;
}

.lesson-focus-list,
.lesson-apply-list,
.lesson-common-list {
    display: grid;
    gap: .4rem;
    padding-left: 1.25rem;
}

.lesson-apply-list {
    max-width: 82ch;
}

.lesson-code-example {
    display: grid;
    gap: 1rem;
    border: 1px solid #c8d7e5;
    border-radius: 8px;
    background: #f7fafc;
    box-shadow: 0 12px 26px rgba(19, 41, 61, .06);
    padding: 1.1rem;
}

.lesson-example-head {
    display: flex;
    flex-wrap: wrap;
    gap: .65rem;
    align-items: center;
    border-bottom: 1px solid #d8e4ee;
    padding-bottom: .75rem;
}

.lesson-example-head span,
.lesson-panel-label {
    display: inline-flex;
    align-items: center;
    width: max-content;
    border-radius: 999px;
    padding: .2rem .58rem;
    font-size: .75rem;
    font-weight: 800;
    letter-spacing: .02em;
    text-transform: uppercase;
}

.lesson-example-head span {
    background: #e6f1f8;
    color: var(--pearl-primary-dark);
}

.lesson-panel-label {
    margin-bottom: .55rem;
    background: #fff;
    color: #52687c;
    border: 1px solid #d7e2ec;
}

.lesson-code-example h4 {
    margin: 0;
    color: var(--pearl-primary-dark);
    font-size: 1.05rem;
}

.lesson-example-summary {
    max-width: 82ch;
    margin: 0;
    color: var(--pearl-muted);
}

.lesson-code-panel,
.lesson-output-panel {
    border: 1px solid #cddbe7;
    border-radius: 8px;
    background: #fff;
    padding: .85rem;
}

.lesson-code-panel {
    background: #fdfefe;
}

.lesson-code-example pre {
    margin: 0;
    border-color: #24384a;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .04);
}

.lesson-code-notes {
    display: grid;
    gap: .35rem;
    margin: 0;
    padding-left: 1.2rem;
}

.lesson-output-panel {
    margin-top: 0;
    background: #eaf5fb;
    border: 2px solid #6ba3ca;
    box-shadow: 0 16px 34px rgba(27, 95, 143, .16);
}

.lesson-output-label {
    padding: .28rem .75rem;
    background: var(--pearl-primary-dark);
    color: #fff;
    border-color: var(--pearl-primary-dark);
    font-size: .82rem;
    font-weight: 900;
    box-shadow: 0 6px 14px rgba(27, 95, 143, .22);
}

.lesson-output-frame {
    overflow: hidden;
    border: 3px solid #2d79ad;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 0 0 5px rgba(45, 121, 173, .13), 0 12px 24px rgba(23, 32, 51, .12);
}

.lesson-output-frame iframe {
    display: block;
    width: 100%;
    min-height: 230px;
    border: 0;
    background: #fff;
}

.lesson-preview-panel {
    max-width: 100%;
    margin-top: 1.5rem;
    border-top: 1px solid var(--pearl-border);
    padding-top: 1.25rem;
}

.lesson-preview-heading {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: end;
    margin-bottom: 1rem;
}

.lesson-preview-heading h2 {
    margin: 0;
    font-size: 1.25rem;
}

.lesson-preview-heading span {
    color: var(--pearl-muted);
    font-size: .9rem;
    font-weight: 700;
}

.lesson-preview-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 1rem;
    align-items: stretch;
}

.lesson-preview-grid.is-review-only {
    grid-template-columns: minmax(0, 560px);
}

.lesson-preview-frame {
    overflow: hidden;
    min-height: 380px;
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: #fff;
}

.lesson-preview-frame iframe {
    display: block;
    width: 100%;
    min-height: 380px;
    border: 0;
    background: #fff;
}

.lesson-check-panel {
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: var(--pearl-surface);
    padding: 1rem;
}

.lesson-check-panel-wide {
    max-width: 560px;
}

.lesson-check-panel h3 {
    margin: 0 0 .75rem;
    font-size: 1rem;
}

.lesson-check {
    display: grid;
    grid-template-columns: 18px minmax(0, 1fr);
    gap: .55rem;
    align-items: start;
    margin-bottom: .7rem;
    color: var(--pearl-ink);
    font-size: .95rem;
}

.lesson-check input {
    margin-top: .22rem;
    accent-color: var(--pearl-primary);
}

.lesson-check-panel p {
    margin: .75rem 0 0;
    color: var(--pearl-muted);
    font-size: .9rem;
}

.video-placeholder {
    display: grid;
    min-height: 260px;
    place-items: center;
    border-radius: 8px;
    background: #172033;
    color: #fff;
    padding: 1rem;
    margin-bottom: 1rem;
    text-align: center;
}

.lesson-video-panel {
    overflow: hidden;
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: #0f1724;
    margin-bottom: 1.25rem;
    aspect-ratio: 16 / 9;
}

.lesson-video-panel iframe,
.lesson-video-panel video {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
    background: #0f1724;
}

.asset-link {
    display: block;
    padding: .6rem .7rem;
    border-radius: 6px;
    background: var(--pearl-surface);
    margin-top: .5rem;
}

.lesson-nav-stack {
    display: grid;
    gap: .55rem;
}

.ai-output {
    min-height: 420px;
    max-height: 680px;
    overflow: auto;
    white-space: pre-wrap;
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: #13202b;
    color: #f7fbfc;
    padding: 1rem;
}

.launch-check-list {
    display: grid;
    gap: .75rem;
}

.launch-check {
    display: grid;
    grid-template-columns: 90px minmax(0, 220px) minmax(0, 1fr);
    gap: .75rem;
    align-items: center;
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    padding: .85rem;
    background: #fff;
}

.launch-check span {
    display: inline-flex;
    justify-content: center;
    border-radius: 999px;
    padding: .22rem .55rem;
    font-size: .78rem;
    font-weight: 800;
}

.launch-check-pass span {
    background: #e8f6ef;
    color: #0f6a3f;
}

.launch-check-warning span {
    background: #fff4d8;
    color: #875a00;
}

.launch-check-fail span {
    background: #fde8e8;
    color: #9b1c1c;
}

.launch-check p {
    margin: 0;
    color: var(--pearl-muted);
}

.certificate-ready-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: .85rem 0;
    border-top: 1px solid var(--pearl-border);
}

.table-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .45rem;
}

.certificate-print-shell {
    background: var(--pearl-surface);
    min-height: 70vh;
}

.certificate-actions {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
}

.certificate-actions > div {
    display: flex;
    flex-wrap: wrap;
    gap: .55rem;
}

.certificate-sheet {
    position: relative;
    max-width: 960px;
    margin: 0 auto;
    aspect-ratio: 1.414 / 1;
    background: #fff;
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    box-shadow: var(--pearl-shadow);
    padding: clamp(1rem, 3vw, 2rem);
}

.certificate-inner {
    display: grid;
    align-content: center;
    justify-items: center;
    height: 100%;
    border: 2px solid var(--pearl-primary);
    padding: clamp(1rem, 4vw, 3rem);
    text-align: center;
}

.certificate-brand {
    margin: 0 0 .75rem;
    color: var(--pearl-primary-dark);
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    font-weight: 800;
    letter-spacing: .08em;
}

.certificate-inner h1 {
    margin: 0 0 1.25rem;
    font-size: clamp(1.8rem, 4vw, 3rem);
}

.certificate-inner h2 {
    margin: .3rem 0 1rem;
    color: var(--pearl-primary-dark);
    font-size: clamp(1.55rem, 3.4vw, 2.7rem);
}

.certificate-inner h3 {
    max-width: 780px;
    margin: .35rem 0 1.5rem;
    color: var(--pearl-ink);
    font-size: clamp(1.25rem, 2.6vw, 2rem);
}

.certificate-kicker,
.certificate-meta span,
.certificate-footer-row span {
    color: var(--pearl-muted);
}

.certificate-meta {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .8rem;
    width: 100%;
    max-width: 760px;
    margin: .5rem 0 2rem;
}

.certificate-meta div {
    border-top: 1px solid var(--pearl-border);
    padding-top: .7rem;
}

.certificate-meta span,
.certificate-footer-row span {
    display: block;
    font-size: .82rem;
    text-transform: uppercase;
    font-weight: 700;
}

.certificate-footer-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 220px;
    gap: 1.5rem;
    align-items: end;
    width: 100%;
    max-width: 780px;
    text-align: left;
}

.certificate-signature {
    border-top: 1px solid var(--pearl-ink);
    padding-top: .65rem;
    text-align: center;
}

.certificate-status-stamp {
    position: absolute;
    top: 2rem;
    right: 2rem;
    transform: rotate(10deg);
    border: 2px solid #b42318;
    color: #b42318;
    padding: .35rem .85rem;
    font-weight: 900;
    text-transform: uppercase;
}

.checkout-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 1.25rem;
    align-items: start;
}

.checkout-summary {
    border: 1px solid var(--pearl-border);
    border-radius: 8px;
    background: #fff;
    padding: 1.15rem;
    position: sticky;
    top: 1rem;
}

.checkout-summary dl {
    display: grid;
    gap: .65rem;
    margin: 1rem 0;
}

.checkout-summary dl div,
.checkout-item,
.payment-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: start;
}

.checkout-summary dt,
.checkout-summary dd {
    margin: 0;
}

.checkout-summary dd,
.checkout-item span,
.payment-row strong {
    font-weight: 700;
}

.checkout-item,
.payment-row {
    padding: .85rem 0;
    border-top: 1px solid var(--pearl-border);
}

.checkout-item:first-of-type {
    border-top: 0;
}

.checkout-item p {
    color: var(--pearl-muted);
    margin: .25rem 0 0;
}

.local-payment-box {
    display: grid;
    gap: .25rem;
    padding: .85rem;
    border-radius: 8px;
    background: var(--pearl-surface);
    margin-bottom: 1rem;
}

.local-payment-box span {
    color: var(--pearl-muted);
    word-break: break-word;
}

.payment-qr {
    width: min(240px, 100%);
    height: auto;
    justify-self: center;
    border: 1px solid var(--pearl-border);
    border-radius: 10px;
    background: #fff;
    padding: .5rem;
    margin: .5rem 0;
}

.quiz-question {
    padding: 1rem 0;
    border-bottom: 1px solid var(--pearl-border);
}

.quiz-question:first-of-type {
    padding-top: 0;
}

.quiz-question:last-of-type {
    border-bottom: 0;
}

.page-heading .container {
    padding-top: clamp(1.7rem, 3vw, 3rem) !important;
    padding-bottom: clamp(1.7rem, 3vw, 3rem) !important;
}

.display-5,
.display-6 {
    letter-spacing: 0;
    line-height: 1.12;
}

.lead {
    font-size: clamp(1.02rem, 1.4vw, 1.18rem);
}

.btn {
    border-radius: 7px;
    white-space: nowrap;
}

.form-control,
.form-select {
    border-radius: 7px;
}

.table-responsive {
    border-radius: 8px;
}

@media (max-width: 991.98px) {
    .navbar-nav {
        align-items: stretch !important;
        gap: .25rem !important;
        padding-top: .75rem;
    }

    .navbar-nav .btn {
        display: block;
        width: 100%;
        margin-left: 0 !important;
        text-align: center;
    }

    .catalog-layout {
        grid-template-columns: 1fr;
    }

    .catalog-sidebar {
        position: static;
    }

    .auth-shell,
    .dashboard-grid,
    .admin-split,
    .admin-stat-grid,
    .admin-action-grid,
    .student-summary-grid,
    .learning-grid,
    .workspace-layout,
    .lesson-layout,
    .checkout-layout {
        grid-template-columns: 1fr;
    }

    .admin-heading {
        align-items: start;
        flex-direction: column;
    }

    .workspace-sidebar,
    .lesson-side-panel,
    .checkout-summary {
        position: static;
    }
}

@media (max-width: 767.98px) {
    .search-panel,
    .outcome-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .course-choice-heading,
    .course-choice-title {
        align-items: flex-start;
        flex-direction: column;
    }

    .hero-image {
        aspect-ratio: 16 / 11;
        max-height: 260px;
    }

    .content-image,
    .article-image,
    .post-card img,
    .gallery-item img {
        max-height: 240px;
    }

    .course-card img {
        max-height: none;
    }

    .page-heading h1,
    .hero-section h1,
    .course-hero h1 {
        font-size: clamp(1.65rem, 8vw, 2.35rem);
    }

    .search-panel .btn,
    .search-panel .form-control {
        width: 100%;
    }

    .profile-panel dl > div {
        grid-template-columns: 1fr;
        gap: .25rem;
    }

    .curriculum-section-heading,
    .curriculum-admin-lesson,
    .editable-lesson-row form:first-child,
    .lesson-asset-row {
        grid-template-columns: 1fr;
        flex-direction: column;
        align-items: stretch;
    }

    .lesson-row,
    .lesson-header,
    .lesson-preview-heading,
    .launch-check,
    .learning-card-footer,
    .certificate-actions,
    .certificate-ready-row,
    .checkout-summary dl div,
    .checkout-item,
    .payment-row {
        grid-template-columns: 1fr;
        flex-direction: column;
        align-items: stretch;
    }

    .lesson-preview-grid {
        grid-template-columns: 1fr;
    }

    .lesson-code-example {
        padding: .9rem;
    }

    .lesson-example-head {
        align-items: flex-start;
        flex-direction: column;
        gap: .45rem;
    }

    .lesson-code-panel,
    .lesson-output-panel {
        padding: .7rem;
    }

    .lesson-preview-frame,
    .lesson-preview-frame iframe {
        min-height: 320px;
    }

    .certificate-sheet {
        aspect-ratio: auto;
    }

    .certificate-meta,
    .certificate-footer-row {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .admin-panel,
    .form-panel,
    .contact-card,
    .enroll-panel,
    .learning-card,
    .workspace-section,
    .lesson-player,
    .lesson-side-panel,
    .checkout-summary {
        padding: 1rem;
    }
}

@media (max-width: 575.98px) {
    body {
        font-size: 15px;
    }

    .container {
        --bs-gutter-x: 1rem;
    }

    .admin-table {
        min-width: 620px;
    }

    .course-facts span,
    .course-meta span {
        width: 100%;
        justify-content: center;
    }
}

@media print {
    body {
        background: #fff;
    }

    .site-header,
    .site-footer,
    .admin-nav,
    .student-nav,
    .certificate-actions {
        display: none !important;
    }

    main {
        min-height: 0;
    }

    .certificate-print-shell {
        background: #fff;
    }

    .certificate-print-shell .container {
        width: 100%;
        max-width: none;
        padding: 0 !important;
    }

    .certificate-sheet {
        width: 100%;
        max-width: none;
        min-height: 96vh;
        border: 0;
        border-radius: 0;
        box-shadow: none;
        page-break-inside: avoid;
    }
}