body {
    display: block;
}

main {
    width: calc(100% - var(--sidebar-width));
    margin-left: 240px;
    padding: 112px 32px 72px;
}

.course-page-header {
    display: grid;
    gap: 12px;
    max-width: 720px;
    margin-bottom: 40px;
}

.eyebrow {
    color: var(--md-sys-color-primary);
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
}

#modules-content {
    display: grid;
    gap: 28px;
}

#modules-content > h1 {
    margin: 0;
}

.page-eyebrow {
    margin: 0;
    color: var(--md-sys-color-primary);
    font: 700 .76rem var(--font-components);
    letter-spacing: .14em;
    text-transform: uppercase;
}

.modules-progress {
    display: grid;
    gap: 10px;
    max-width: 620px;
    padding: 18px 20px;
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--radius-md);
    color: var(--md-sys-color-on-surface-variant);
    font-size: .85rem;
}

.progress-track {
    display: block;
    height: 8px;
    overflow: hidden;
    background: var(--md-sys-color-surface-container-highest);
    border-radius: var(--radius-full);
}

.progress-value {
    display: block;
    height: 100%;
    background: var(--md-sys-color-primary);
    border-radius: var(--radius-full);
}

.lesson-menu-list {
    display: grid;
    gap: 16px;
}

.lesson-menu-list details {
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--radius-lg);
    background: var(--md-sys-color-surface);
}

.lesson-menu-list summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 68px;
    padding: 0 24px;
    background: var(--md-sys-color-surface-container-low);
    color: var(--md-sys-color-on-surface);
    font-size: 1.05rem;
    font-weight: 750;
    cursor: pointer;
    list-style-position: inside;
}

.module-summary-meta {
    color: var(--md-sys-color-on-surface-variant);
    font: 500 .78rem var(--font-components);
    letter-spacing: .04em;
    text-transform: uppercase;
}

.module-description {
    margin: 0;
    padding: var(--padding-md);
    color: var(--md-sys-color-on-surface-variant);
    font-size: .9rem;
    line-height: 1.4;
}

.lesson-menu-list details[open] .module-description {
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.lesson-menu-list summary::marker {
    color: var(--md-sys-color-primary);
}

.lesson-menu-list details[open] summary {
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.lesson-menu-list details a {
    display: flex;
    align-items: center;
    min-height: 58px;
    padding: 14px 24px 14px 44px;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
    color: var(--md-sys-color-primary);
    font-weight: 650;
    text-decoration: none;
}

.lesson-link-content {
    display: grid;
    gap: 4px;
    min-width: 0;
}

.lesson-link-content > .lesson-description {
    color: var(--md-sys-color-on-surface-variant);
    font-size: .82rem;
    font-weight: 400;
    line-height: 1.35;
}

.lesson-menu-list details a:last-child {
    border-bottom: 0;
}

.lesson-menu-list details a[aria-disabled="true"] {
    color: var(--md-sys-color-on-surface-variant);
    cursor: not-allowed;
    opacity: .58;
}

.lesson-status {
    margin-left: auto;
    padding: 5px 9px;
    border-radius: var(--radius-full);
    background: var(--md-sys-color-surface-container-highest);
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
}

.lesson-status[data-status="available"] {
    color: var(--md-sys-color-primary);
}

.lesson-status[data-status="completed"] {
    color: var(--md-sys-color-tertiary);
}

.lesson-status[data-status="locked"] {
    color: var(--md-sys-color-on-surface-variant);
}

.lesson-status[data-status="completed"]::before {
    content: "✓ ";
}

.course-page-header p,
#course-detail p,
.module-card p,
.page-message {
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.65;
}

.my-courses-list {
    display: grid;
    gap: 20px;
}

.my-course-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 32px;
    padding: 28px;
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--radius-lg);
    background: var(--md-sys-color-surface);
}

.my-course-card--recent {
    border-color: var(--md-sys-color-primary);
}

.my-course-card__content {
    display: grid;
    gap: 12px;
    min-width: 0;
}

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

.my-course-card h2 {
    font-size: clamp(1.4rem, 3vw, 2rem);
}

.my-course-card p {
    max-width: 720px;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.55;
}

.my-course-card__stats {
    color: var(--md-sys-color-on-surface-variant);
    font-size: .82rem;
}

.my-course-card .progress-track {
    width: min(100%, 620px);
}

.my-course-card__aside {
    display: grid;
    align-content: space-between;
    justify-items: end;
    gap: 20px;
    min-width: 150px;
}

.my-course-card__last-visited {
    max-width: 190px;
    color: var(--md-sys-color-on-surface-variant);
    font-size: .78rem;
    text-align: right;
    text-transform: capitalize;
}

.course-list,
.modules-page {
    display: grid;
    gap: 20px;
}

.course-list {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
}

.course-item,
.module-card {
    display: grid;
    gap: 16px;
    padding: 28px;
    background: var(--md-sys-color-surface);
}

.courses-skeleton-card {
    pointer-events: none;
    cursor: default;
}

.course-list .courses-skeleton-card {
    grid-template-columns: minmax(150px, 24%) minmax(0, 1fr);
    align-items: stretch;
    gap: 0;
    padding: 0;
}

.courses-skeleton-thumbnail {
    width: 100%;
    min-height: 160px;
    height: auto;
    aspect-ratio: 16 / 9;
    background:
        linear-gradient(110deg,
            var(--md-sys-color-surface-container-high) 8%,
            var(--md-sys-color-surface-container-highest) 18%,
            var(--md-sys-color-surface-container-high) 33%);
    background-size: 200% 100%;
}

.courses-skeleton-content {
    display: grid;
    align-content: center;
    justify-items: start;
    gap: 11px;
    min-width: 0;
    padding: 8px 20px;
}

.courses-skeleton-meta {
    display: flex;
    gap: 7px;
    width: 100%;
}

.courses-skeleton-tag {
    width: 92px;
    height: 21px;
}

.courses-skeleton-tag--short {
    width: 68px;
}

.courses-skeleton-title {
    width: min(58%, 340px);
    height: 20px;
}

.courses-skeleton-description {
    width: 92%;
    height: 12px;
}

.courses-skeleton-description--short {
    width: 66%;
}

.courses-skeleton-action {
    width: 150px;
    height: 42px;
    margin-top: 3px;
    border-radius: var(--radius-sm);
}

.course-item__thumbnail,
.my-course-card__thumbnail {
    display: grid;
    place-items: center;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    color: var(--md-sys-color-on-primary-container);
    font-size: 2rem;
}

.course-list .course-item {
    grid-template-columns: minmax(150px, 24%) minmax(0, 1fr);
    gap: 0;
    align-items: stretch;
    min-width: 0;
    min-height: 160px;
    overflow: hidden;
    padding: 0;
    border: 1px solid var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-surface);
    transition: border-color .2s ease;
}

.course-list .course-item:hover {
    border-color: var(--md-sys-color-primary);
}

.course-list .course-item__thumbnail {
    position: relative;
    width: 100%;
    min-height: 160px;
    height: 100%;
    aspect-ratio: 16 / 9;
    background:
        radial-gradient(ellipse at 82% 16%, rgb(255 255 255 / 24%), transparent 35%),
        linear-gradient(135deg, var(--md-sys-color-primary-container), var(--md-sys-color-surface-container-high));
}

.course-list .course-item__thumbnail--placeholder::after {
    content: "</>";
    color: var(--md-sys-color-on-primary-container);
    font: 700 2rem var(--font-components);
    letter-spacing: .08em;
    opacity: .75;
}

.course-list .course-item__thumbnail img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.course-item__content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-width: 0;
    padding: 16px 20px;
}

.course-item__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.course-item__meta span {
    padding: 5px 9px;
    border: 1px solid var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-surface-container-low);
    color: var(--md-sys-color-on-surface-variant);
    font: 600 .68rem var(--font-components);
    letter-spacing: .04em;
    text-transform: uppercase;
}

.course-item__title {
    margin: 8px 0 0;
    color: var(--md-sys-color-on-surface);
    font-size: clamp(1.15rem, 2vw, 1.35rem);
    line-height: 1.25;
}

.course-item__description {
    display: -webkit-box;
    overflow: hidden;
    margin: 6px 0 12px;
    color: var(--md-sys-color-on-surface-variant);
    font-size: .92rem;
    line-height: 1.55;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.course-item__action {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: fit-content;
    min-width: 170px;
    min-height: 46px;
    margin-top: auto;
    padding: 0 14px;
    border: 1px solid var(--md-sys-color-outline-variant);
    color: var(--md-sys-color-primary);
    font: 600 .82rem var(--font-components);
    text-decoration: none;
    transition: color .2s ease, background .2s ease, border-color .2s ease;
}

.course-item__action i {
    font-size: 1.05rem;
}

.course-item__action:hover {
    border-color: var(--md-sys-color-primary);
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.course-item__action:focus-visible {
    outline: 2px solid var(--md-sys-color-primary);
    outline-offset: 3px;
}

@media (max-width: 680px) {
    .course-list .course-item,
    .course-list .courses-skeleton-card {
        grid-template-columns: minmax(0, 1fr);
    }

    .course-list .course-item__thumbnail {
        min-height: 0;
        height: auto;
        aspect-ratio: 16 / 9;
    }

    .course-list .courses-skeleton-thumbnail {
        min-height: 0;
        aspect-ratio: 16 / 9;
    }

    .courses-skeleton-content {
        gap: 10px;
        padding: 16px;
    }

    .courses-skeleton-title {
        width: 76%;
    }

    .courses-skeleton-description {
        width: 100%;
    }

    .course-item__content {
        padding: 16px;
    }

    .course-item__action {
        width: 100%;
    }
}

.course-item__thumbnail img,
.my-course-card__thumbnail img {
    display: block;
    width: 100%;
    height: 100%;
    min-height: inherit;
    object-fit: cover;
}

.my-course-card__thumbnail {
    min-height: 110px;
    max-width: 220px;
}

.my-course-card,
.continue-card,
.course-card {
    cursor: pointer;
}

.my-course-card:focus-visible,
.continue-card:focus-visible,
.course-card:focus-visible {
    outline: 2px solid var(--md-sys-color-primary);
    outline-offset: 2px;
}

.course-detail {
    display: grid;
    gap: 28px;
    width: 100%;
    max-width: 1440px;
}

.course-detail__header {
    display: grid;
    gap: 14px;
    padding-bottom: 28px;
}

.course-detail__header p {
    max-width: 720px;
}

.course-detail__summary {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 1px solid var(--md-sys-color-outline-variant);
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.course-detail__summary div {
    display: grid;
    gap: 5px;
    padding: 16px 18px;
    border-right: 1px solid var(--md-sys-color-outline-variant);
}

.course-detail__summary div:last-child {
    border-right: 0;
}

.course-detail__summary span {
    color: var(--md-sys-color-on-surface-variant);
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .08em;
}

.course-detail__summary strong {
    font-size: 1rem;
}

.course-detail__image {
    display: block;
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    border: 1px solid var(--md-sys-color-outline-variant);
}

.course-detail__lists {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    padding: 28px 0;
    border-top: 1px solid var(--md-sys-color-outline-variant);
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.course-detail__lists section {
    min-width: 0;
    padding: 0 28px;
    border-right: 1px solid var(--md-sys-color-outline-variant);
}

.course-detail__lists section:first-child {
    padding-left: 0;
}

.course-detail__lists section:last-child {
    padding-right: 0;
    border-right: 0;
}

.course-detail__lists > p {
    margin: 0;
    padding: 0 0 0 28px;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.5;
}

.course-detail__lists ul {
    display: grid;
    gap: 8px;
    margin: 0;
    padding-left: 18px;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.5;
}

.course-detail h2 {
    font-size: 1.4rem;
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1px;
    border: 1px solid var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-outline-variant);
}

.module-card h3 {
    font-size: 1.15rem;
}

.course-detail > h2 {
    margin: 8px 0 -12px;
    font-size: 1.45rem;
}

.module-card__lessons {
    display: grid;
    gap: 8px;
    margin: 0;
    padding: 14px 0 0 18px;
    border-top: 1px solid var(--md-sys-color-outline-variant);
    color: var(--md-sys-color-on-surface-variant);
    font-size: .88rem;
    line-height: 1.4;
}

.content-skeleton {
    display: grid;
    gap: 16px;
    padding: 28px 0;
}

.content-skeleton span {
    display: block;
    width: 70%;
    height: 18px;
    background: var(--md-sys-color-surface-container-highest);
}

.content-skeleton span:first-child {
    width: 42%;
    height: 48px;
}

.course-item {
    min-height: 0;
}

.module-card h2 {
    font-size: 1.35rem;
}

.course-meta {
    color: var(--md-sys-color-on-surface-variant);
    font-size: .78rem;
    text-transform: uppercase;
}

.course-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    min-height: 40px;
    padding: 0 16px;
    border: 1px solid var(--md-sys-color-primary);
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    font: 600 .82rem var(--font-components);
    text-decoration: none;
    cursor: pointer;
}

.course-detail > .course-action {
    justify-self: start;
}

@media (max-width: 900px) {
    main {
        width: 100%;
        margin-left: 0;
        padding: 88px 20px 56px;
    }

    .course-detail {
        max-width: none;
    }
    .lesson-menu-list summary {
        padding: 0 18px;
    }

    .lesson-menu-list details a {
        padding-left: 34px;
    }

    .course-detail__summary {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .course-detail__lists {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .course-detail__lists section,
    .course-detail__lists section:first-child,
    .course-detail__lists section:last-child {
        padding: 0 0 20px;
        border-right: 0;
        border-bottom: 1px solid var(--md-sys-color-outline-variant);
    }

    .course-detail__lists section:last-child {
        padding-bottom: 0;
        border-bottom: 0;
    }

    .course-detail__lists > p {
        padding: 0;
    }

    .my-course-card {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .my-course-card__aside {
        justify-items: start;
    }

    .my-course-card__last-visited {
        text-align: left;
    }
}

.course-detail__hero {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr);
    gap: clamp(24px, 4vw, 56px);
    align-items: center;
    background: var(--md-sys-color-surface);
}
.course-detail__hero--no-image {
    grid-template-columns: minmax(0, 1fr);
}
.course-detail__hero-content {
    display: grid;
    gap: 24px;
    min-width: 0;
}
.course-detail__header {
    display: grid;
    gap: 14px;
    margin: 0;
}
.course-detail__header .page-title {
    margin: 0;
    color: var(--md-sys-color-on-surface);
    font-family: var(--font-components);
    font-size: clamp(2rem, 4vw, 3.25rem);
    line-height: 1.08;
}
.course-detail__header p {
    max-width: 680px;
    margin: 0;
    color: var(--md-sys-color-on-surface-variant);
    font-size: 1.05rem;
    line-height: 1.65;
}
.course-detail__image:not([hidden]) {
    display: block;
    width: 100%;
    min-height: 250px;
    max-height: 390px;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border: 1px solid var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-surface-container);
}
.course-detail__summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
}
.course-detail__summary div {
    display: grid;
    align-content: center;
    gap: 6px;
    min-height: 68px;
    padding: 12px 14px;
    border: 0;
    background: var(--md-sys-color-surface);
}
.course-detail__summary span {
    color: var(--md-sys-color-on-surface-variant);
    font-size: .68rem;
    letter-spacing: .08em;
    text-transform: uppercase;
}
.course-detail__summary strong {
    color: var(--md-sys-color-on-surface);
    font-size: .94rem;
}
.course-detail__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 0;
}
.course-detail__actions .course-action {
    min-height: 48px;
    padding: 0 22px;
    font-size: .9rem;
}
.course-detail__actions .course-action:focus-visible {
    outline: 2px solid var(--md-sys-color-primary);
    outline-offset: 3px;
}
.course-detail__actions .course-action:disabled {
    cursor: wait;
    opacity: .65;
}
.course-detail__modules { display: grid; gap: 24px; margin-top: 12px; }
.course-detail__modules-heading {
    padding-bottom: 18px;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}
.course-detail__modules-heading h2 {
    font-size: clamp(1.4rem, 3vw, 1.8rem);
}
.course-detail__modules-heading p {
    display: flex;
    gap: 5px;
    align-items: baseline;
}
.course-detail__modules-heading p strong {
    color: var(--md-sys-color-on-surface);
    font-size: 1.05rem;
}
.course-detail__module {
    align-items: start;
    padding: 20px 22px;
}
.course-detail__module-content h3 {
    font-size: 1.05rem;
}
.course-detail__module-count {
    padding: 6px 10px;
    background: var(--md-sys-color-surface-container-low);
}
.course-detail__actions { margin-top: 0; }

.course-detail__information {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}
.course-detail__information-card {
    min-width: 0;
    padding: 22px;
    border: 1px solid var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-surface);
}
.course-detail__information-card h2 {
    margin: 0;
    color: var(--md-sys-color-on-surface);
    font-size: 1.1rem;
}
.course-detail__information-card ul {
    display: grid;
    gap: 10px;
    margin: 16px 0 0;
    padding: 0;
    list-style: none;
}
.course-detail__information-card li {
    position: relative;
    padding-left: 24px;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.5;
}
.course-detail__information-card li::before {
    position: absolute;
    left: 0;
    color: var(--md-sys-color-primary);
    content: "✓";
    font-weight: 700;
}
.course-detail__instructor {
    grid-column: 1 / -1;
}
.course-detail__information-eyebrow {
    margin: 0 0 6px;
    color: var(--md-sys-color-primary);
    font: 700 .7rem var(--font-components);
    letter-spacing: .1em;
    text-transform: uppercase;
}
.course-detail__instructor > p:last-child {
    max-width: 760px;
    margin: 10px 0 0;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.55;
}
.course-detail__module-lessons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
    gap: 8px 20px;
    margin: 12px 0 0;
    padding: 12px 0 0;
    border-top: 1px solid var(--md-sys-color-outline-variant);
    list-style: none;
}
.course-detail__module-lessons li {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    position: relative;
    padding-left: 16px;
    color: var(--md-sys-color-on-surface-variant);
    font-size: .85rem;
    line-height: 1.4;
}
.course-detail__module-lessons li::before {
    position: absolute;
    left: 0;
    content: "•";
    color: var(--md-sys-color-primary);
}
.course-detail__lesson-duration {
    flex: 0 0 auto;
    color: var(--md-sys-color-on-surface-variant);
    font-size: .75rem;
}

@media (max-width: 760px) {
    .course-detail__hero {
        grid-template-columns: minmax(0, 1fr);
        padding: 22px;
    }
    .course-detail__hero-content {
        order: 1;
    }
    .course-detail__image:not([hidden]) {
        order: 2;
        min-height: 180px;
        max-height: 280px;
        aspect-ratio: 16 / 9;
    }
    .course-detail__summary {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .course-detail__information {
        grid-template-columns: minmax(0, 1fr);
    }
    .course-detail__instructor {
        grid-column: auto;
    }
}
.course-module h3 { margin: 0 0 12px 0; font-size: 1.25rem; color: var(--md-sys-color-on-surface); }
.course-module__lessons { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.course-lesson { padding: 12px 16px; border-radius: var(--radius-sm); border: 1px solid var(--md-sys-color-outline-variant); background: var(--md-sys-color-surface-container-lowest); display: flex; align-items: center; }
.course-lesson a { color: var(--md-sys-color-on-surface); text-decoration: none; font-weight: 500; display: block; width: 100%; transition: color 0.2s; }
.course-lesson a:hover { color: var(--md-sys-color-primary); }
.course-lesson--locked span { color: var(--md-sys-color-on-surface-variant); opacity: 0.7; }
.course-lesson--completed { border-color: var(--md-sys-color-primary); background: var(--md-sys-color-surface-container); }
.module-list-header,
.module-detail-header {
    display: grid;
    gap: 10px;
    margin-bottom: 24px;
}
.module-list-header > p:last-child,
.module-detail-header > p:not(.page-eyebrow) {
    margin: 0;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.5;
}
.module-overview-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
    gap: 16px;
}
.module-overview-card {
    position: relative;
    display: grid;
    gap: 10px;
    min-height: 170px;
    padding: 22px;
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--radius-lg);
    background: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    text-decoration: none;
    transition: border-color .18s ease, background .18s ease, transform .18s ease;
}
.module-overview-card:hover {
    transform: translateY(-2px);
    border-color: var(--md-sys-color-primary);
    background: var(--md-sys-color-surface-container-low);
}
.module-overview-card h2,
.module-overview-card p {
    margin: 0;
}
.module-overview-card h2 {
    padding-right: 24px;
    font-size: 1.15rem;
}
.module-overview-card p {
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.45;
}
.module-overview-card__count,
.module-overview-card__progress,
.module-summary-meta {
    color: var(--md-sys-color-primary);
    font: 600 .82rem var(--font-components);
}
.module-overview-card__progress {
    color: var(--md-sys-color-on-surface-variant);
}
.module-overview-card > i {
    position: absolute;
    top: 22px;
    right: 22px;
    color: var(--md-sys-color-primary);
    font-size: 1.2rem;
}
.module-detail-header .page-title {
    margin: 0;
}
.module-access-notice {
    margin: 0 0 16px;
    color: var(--md-sys-color-on-surface-variant);
}
.course-back-link {
    display: inline-flex;
    width: fit-content;
    margin-bottom: 20px;
    color: var(--md-sys-color-primary);
    font: 600 .84rem var(--font-components);
    text-decoration: none;
}
.course-back-link:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}
.course-back-link:focus-visible {
    outline: 2px solid var(--md-sys-color-primary);
    outline-offset: 3px;
}
.course-detail__image:not([hidden]) {
    display: block;
    width: 100%;
    max-height: 360px;
    object-fit: cover;
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--radius-lg);
    background: var(--md-sys-color-surface-container);
}
.course-detail__modules {
    display: grid;
    gap: 18px;
    margin-top: 0;
}
.course-detail__modules-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 16px;
}
.course-detail__modules-heading h2,
.course-detail__modules-heading p {
    margin: 0;
}
.course-detail__modules-heading h2 {
    color: var(--md-sys-color-on-surface);
    font-size: clamp(1.35rem, 3vw, 1.75rem);
}
.course-detail__modules-heading p {
    color: var(--md-sys-color-on-surface-variant);
}
.course-detail__module-list {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}
.course-detail__module {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--radius-md);
    background: var(--md-sys-color-surface);
}
.course-detail__module-number {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border-radius: 50%;
    background: var(--md-sys-color-surface-container);
    color: var(--md-sys-color-primary);
    font: 700 .86rem var(--font-components);
}
.course-detail__module-content h3,
.course-detail__module-content p {
    margin: 0;
}
.course-detail__module-content h3 {
    color: var(--md-sys-color-on-surface);
    font-size: 1rem;
}
.course-detail__module-content p {
    margin-top: 5px;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.5;
}
.course-detail__module-count {
    color: var(--md-sys-color-on-surface-variant);
    font: 600 .82rem var(--font-components);
    white-space: nowrap;
}
.course-detail__modules-empty {
    margin: 0;
    padding: 20px;
    border: 1px dashed var(--md-sys-color-outline-variant);
    border-radius: var(--radius-md);
    color: var(--md-sys-color-on-surface-variant);
}
.course-detail__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-top: 0;
}
@media (max-width: 600px) {
    .course-detail__modules-heading {
        align-items: flex-start;
        flex-direction: column;
    }
    .course-detail__module {
        grid-template-columns: auto minmax(0, 1fr);
        gap: 12px;
        padding: 16px;
    }
    .course-detail__module-count {
        grid-column: 2;
    }
}

.course-module-panel {
    overflow: hidden;
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--radius-md);
    background: var(--md-sys-color-surface);
}
.course-module-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 62px;
    padding: 14px 24px;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-surface-container-low);
}
.course-module-panel__header h2 {
    margin: 0;
    color: var(--md-sys-color-on-surface);
    font-size: 1.1rem;
}
.course-module-panel__count,
.course-module-panel__progress {
    flex: 0 0 auto;
    color: var(--md-sys-color-on-surface-variant);
    font: 600 .82rem var(--font-components);
}
.course-module-panel__description {
    margin: 0;
    padding: 12px 24px 0;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.5;
}
.course-module-panel__progress {
    display: block;
    padding: 12px 24px 0;
    color: var(--md-sys-color-primary);
}
.module-lesson-list {
    margin: 0;
    padding: 0;
    list-style: none;
}
.module-lesson-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 68px;
    padding: 12px 24px;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}
.module-lesson-row:last-child {
    border-bottom: 0;
}
.module-lesson-row__title {
    min-width: 0;
    color: var(--md-sys-color-on-surface);
    line-height: 1.45;
}
.module-lesson-row__action {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-width: 116px;
    min-height: 38px;
    padding: 0 14px;
    border: 1px solid var(--md-sys-color-primary);
    border-radius: var(--radius-sm);
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    font: 600 .82rem var(--font-components);
    text-decoration: none;
    cursor: pointer;
}
.module-lesson-row__action:hover {
    filter: brightness(.94);
}
.module-lesson-row__action--locked,
.module-lesson-row__action--locked:disabled {
    border-color: var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-surface-container);
    color: var(--md-sys-color-on-surface-variant);
    cursor: not-allowed;
    opacity: 1;
}
.module-lesson-row--completed .module-lesson-row__title {
    color: var(--md-sys-color-on-surface-variant);
}
.module-lesson-list__empty {
    padding: 18px 24px;
    color: var(--md-sys-color-on-surface-variant);
}
@media (max-width: 600px) {
    .course-module-panel__header,
    .module-lesson-row {
        padding-right: 16px;
        padding-left: 16px;
    }
    .module-lesson-row {
        align-items: flex-start;
        gap: 12px;
    }
    .module-lesson-row__action {
        min-width: 104px;
    }
}