/* =========================================
   Learning: courses, tracks, lessons, materials,
   quizzes, practice and related responsive rules
   ========================================= */

/* =========
   Course cards
   ========= */

.course-card-top {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 14px;
}

.onboarding-page .course-card--route-current {
    border-color: var(--border-accent);
    box-shadow: 0 14px 32px rgba(217, 41, 47, 0.1);
}

body[data-theme="dark"] .onboarding-page .course-card--route-current {
    box-shadow: 0 14px 32px rgba(255, 87, 87, 0.08);
}

.course-title {
    margin: 0 0 6px 0;
    font-size: 22px;
    line-height: 1.25;
}

.course-title a:hover {
    color: var(--brand-red);
}

.course-kicker {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-soft);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.course-kicker__label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--brand-red-soft);
    color: var(--brand-red);
}

.course-track {
    font-size: 13px;
}

.course-description {
    color: var(--text-muted);
    line-height: 1.55;
    font-size: 15px;
    min-height: 0;
    margin-bottom: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    font-size: 14px;
    line-height: 1.45;
    margin-bottom: 0;
}

.course-meta span,
.course-meta a,
.list-meta span,
.materials-list-item__source,
.mini-material-chip,
.mini-material-link {
    min-width: 0;
    overflow-wrap: anywhere;
}

.course-meta--hero {
    gap: 10px;
    align-items: stretch;
    margin-top: 14px;
}

.course-meta-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 36px;
    max-width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-soft);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.04);
}

.course-meta-chip--wide {
    max-width: min(100%, 560px);
}

.course-meta-chip__label {
    flex: 0 0 auto;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.course-meta-chip__value {
    min-width: 0;
    color: var(--text-main);
    font-size: 13px;
    font-weight: 800;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.course-meta-chip a.course-meta-chip__value {
    color: var(--brand-red);
    text-decoration: none;
}

.course-meta-chip a.course-meta-chip__value:hover {
    text-decoration: underline;
}

body[data-theme="dark"] .course-meta-chip {
    background: rgba(20, 30, 46, 0.84);
    border-color: rgba(148, 163, 184, 0.18);
    box-shadow: none;
}

body[data-theme="dark"] .course-meta-chip__value {
    color: var(--text-main);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-surface-soft);
    border-radius: 999px;
    overflow: hidden;
    margin: 6px 0 16px;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--brand-red) 0%, #ff5c60 100%);
    border-radius: 999px;
}

.progress-bar--hero {
    margin-top: 16px;
}

.progress-bar--track {
    margin-top: 14px;
}

.course-actions--hero,
.course-actions--certificate {
    margin-top: 18px;
}

.course-actions,
.course-actions-row {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.course-actions form,
.course-actions-row form {
    margin: 0;
}

.status-badge {
    max-width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    min-width: max-content;
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    line-height: 1.25;
    text-align: center;
    white-space: nowrap;
    overflow-wrap: normal;
}

.course-card-top > div {
    min-width: 0;
}

.course-card-top .status-badge {
    max-width: none;
    min-height: 40px;
    padding-inline: 12px;
    white-space: nowrap;
    overflow-wrap: normal;
    word-break: normal;
    hyphens: none;
}

.course-meta .status-badge {
    min-width: max-content;
    white-space: nowrap;
    overflow-wrap: normal;
    word-break: normal;
}

.status-not_started,
.status-not_submitted,
.status-not_assessed {
    background: var(--neutral-bg);
    color: var(--neutral-text);
}

.status-in_progress,
.status-under_review {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.status-completed,
.status-approved,
.status-independent,
.status-certificate,
.status-passed {
    background: var(--success-bg);
    color: var(--success-text);
}

.status-submitted,
.status-learning {
    background: var(--info-bg);
    color: var(--info-text);
}

.status-needs_revision,
.status-exhausted {
    background: rgba(217, 41, 47, 0.10);
    color: var(--brand-red-dark);
}

.status-mentor_level {
    background: rgba(109, 40, 217, 0.12);
    color: #7c3aed;
}

.status-available {
    background: var(--success-bg);
    color: var(--success-text);
}

.status-in-development {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.status-coming-soon {
    background: var(--info-bg);
    color: var(--info-text);
}

.status-required {
    background: rgba(217, 41, 47, 0.12);
    color: var(--brand-red-dark);
}

.status-onboarding {
    background: rgba(14, 165, 233, 0.12);
    color: #0369a1;
}

.status-recommended {
    background: var(--info-bg);
    color: var(--info-text);
}

.status-optional {
    background: var(--neutral-bg);
    color: var(--neutral-text);
}

.status-overdue {
    background: rgba(217, 41, 47, 0.14);
    color: var(--brand-red-dark);
}

.status-due_soon {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.status-planned {
    background: var(--neutral-bg);
    color: var(--neutral-text);
}

.course-description--note {
    margin-top: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--bg-surface-soft);
}

.course-new-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 10px;
    padding: 4px 8px;
    border-radius: 999px;
    background: linear-gradient(135deg, #ff4d4f 0%, #e1272d 100%);
    color: #fff;
    font-size: 11px;
    font-weight: 800;
    vertical-align: middle;
    box-shadow: 0 6px 14px rgba(225, 39, 45, 0.18);
}

/* =========
   Onboarding
   ========= */

.onboarding-panel-pretty {
    margin-top: 24px;
    padding: 24px;
    border-radius: 24px;
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-surface-soft) 100%);
}

.onboarding-header {
    align-items: flex-start;
    margin-bottom: 18px;
}

.onboarding-subtitle {
    margin-top: 6px;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.65;
}

.onboarding-grid-pretty {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.onboarding-card {
    padding: 18px;
    border-radius: 18px;
    background: var(--bg-elevated);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.onboarding-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.onboarding-card__top {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.onboarding-card__num,
.lesson-number,
.lesson-accordion__num,
.course-outline-item__num {
    width: 38px;
    height: 38px;
    min-width: 38px;
    border-radius: 999px;
    background: linear-gradient(135deg, #e1272d 0%, #ff4d4f 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 800;
    box-shadow: 0 8px 16px rgba(225, 39, 45, 0.18);
}

.onboarding-card h4 {
    margin: 0;
    font-size: 18px;
}

.onboarding-card p {
    margin: 0;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.75;
}

.onboarding-tip {
    margin-top: 18px;
    padding: 16px 18px;
    border-radius: 18px;
    background: linear-gradient(90deg, rgba(217, 41, 47, 0.07) 0%, rgba(217, 41, 47, 0.03) 100%);
    border: 1px solid rgba(217, 41, 47, 0.10);
}

.onboarding-tip__title {
    margin-bottom: 6px;
    color: var(--brand-red);
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.onboarding-tip__text {
    color: var(--text-main);
    font-size: 14px;
    line-height: 1.75;
}

.onboarding-page {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.onboarding-hero {
    padding: 28px;
    background:
        radial-gradient(circle at top right, rgba(217, 41, 47, 0.08), transparent 30%),
        linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-surface-soft) 100%);
}

.onboarding-hero .onboarding-badge {
    align-self: flex-start;
    margin-bottom: 14px;
}

.onboarding-hero h2 {
    margin-bottom: 10px;
}

.onboarding-hero p {
    max-width: 920px;
    line-height: 1.75;
}

.onboarding-stats-grid {
    gap: 12px;
}

.onboarding-stat-card {
    padding: 18px 20px;
}

.onboarding-stat-card .stat-title {
    margin-bottom: 8px;
}

.onboarding-stat-card .stat-value {
    font-size: 28px;
}

.onboarding-track-panel {
    padding-top: 22px;
}

.onboarding-empty-state {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    min-height: 0;
    max-width: 760px;
    padding: 28px;
}

.onboarding-empty-state h3,
.onboarding-empty-state p {
    margin: 0;
}

.onboarding-empty-state p {
    color: var(--text-muted);
    line-height: 1.75;
}

/* =========
   Course workspace
   ========= */

.course-workspace {
    display: grid;
    grid-template-columns: 330px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
    margin-top: 20px;
}

.course-reader-column {
    display: grid;
    gap: 20px;
}

.course-outline-header {
    align-items: flex-start;
}

.course-outline-subtitle {
    margin-top: 6px;
    display: flex;
    gap: 8px;
    align-items: center;
    color: var(--text-muted);
    font-size: 13px;
}

.course-outline-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.course-outline-item {
    display: flex;
    gap: 14px;
    padding: 16px;
    border-radius: 18px;
    background: var(--bg-surface);
    color: inherit;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.course-outline-item:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-soft);
    border-color: rgba(225, 39, 45, 0.22);
}

.course-outline-item.is-active {
    border-color: rgba(225, 39, 45, 0.28);
    box-shadow: 0 10px 28px rgba(225, 39, 45, 0.08);
    background: linear-gradient(180deg, var(--bg-surface) 0%, rgba(217, 41, 47, 0.04) 100%);
}

.course-outline-item.is-completed {
    border-color: rgba(16, 185, 129, 0.22);
}

.course-outline-item__body {
    min-width: 0;
    flex: 1;
}

.course-outline-item__title-row {
    display: flex;
    gap: 12px;
    justify-content: space-between;
    align-items: flex-start;
}

.course-outline-item__title {
    color: var(--text-main);
    font-size: 18px;
    line-height: 1.3;
    font-weight: 800;
}

.course-outline-item__state {
    color: var(--brand-red);
    font-size: 12px;
    font-weight: 800;
    white-space: nowrap;
}

.course-outline-item.is-completed .course-outline-item__state {
    color: #16a34a;
}

.course-outline-item__preview {
    margin-top: 8px;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-outline-item__meta {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    color: var(--text-muted);
    font-size: 12px;
}

.course-outline-item__meta span {
    padding: 4px 8px;
    border-radius: 999px;
    background: var(--bg-surface-soft);
}

/* =========
   Course facts / context
   ========= */

.course-context-panel,
.course-reader-panel {
    overflow: hidden;
    border-radius: 24px;
}

.course-context-grid {
    margin-top: 16px;
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 16px;
}

.course-context-card {
    border-radius: 18px;
    padding: 18px;
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-surface-soft) 100%);
}

.course-context-card__label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.course-outcomes-list {
    margin: 0;
    padding-left: 18px;
    color: var(--text-main);
}

.course-outcomes-list li {
    margin-bottom: 10px;
    line-height: 1.65;
}

.summary-box-format,
.stat-value-format {
    min-width: 0;
}

.stat-value-format {
    font-size: 18px;
    line-height: 1.25;
    white-space: normal;
    word-break: break-word;
    overflow-wrap: anywhere;
}

/* =========
   Course reader
   ========= */

.course-reader-panel {
    padding: 28px;
}

.course-reader-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 18px;
}

.course-reader-kicker {
    color: var(--brand-red);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.course-reader-title {
    margin: 0;
    color: var(--text-main);
    font-size: clamp(2rem, 2.5vw, 2.75rem);
    line-height: 1.12;
    max-width: 18ch;
}

.course-reader-badges {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.course-reader-badge {
    display: inline-flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--bg-surface-soft);
    color: var(--text-main);
    font-size: 12px;
    font-weight: 700;
}

.course-reader-intro {
    max-width: 78ch;
    margin-bottom: 22px;
    padding: 16px 18px;
    border-radius: 18px;
    background: rgba(225, 39, 45, 0.04);
    border: 1px solid rgba(225, 39, 45, 0.10);
}

.course-reader-intro__label {
    color: var(--brand-red);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 6px;
}

.course-reader-intro p {
    margin: 0;
    color: var(--text-main);
    font-size: 15px;
    line-height: 1.75;
}

.course-reader-content,
.lesson-content-rich,
.formatted-content {
    max-width: 78ch;
    color: var(--text-main);
    font-size: 17px;
    line-height: 1.9;
    font-weight: 450;
}

.course-reader-content h1,
.course-reader-content h2,
.course-reader-content h3,
.course-reader-content h4,
.lesson-content-rich h1,
.lesson-content-rich h2,
.lesson-content-rich h3,
.lesson-content-rich h4,
.formatted-content h1,
.formatted-content h2,
.formatted-content h3,
.formatted-content h4 {
    margin-top: 30px;
    margin-bottom: 12px;
    color: var(--text-main);
    letter-spacing: 0;
}

.course-reader-content h2,
.lesson-content-rich h2,
.formatted-content h2 {
    font-size: 1.6rem;
}

.course-reader-content h3,
.lesson-content-rich h3,
.formatted-content h3 {
    font-size: 1.25rem;
}

.course-reader-content p,
.lesson-content-rich p,
.formatted-content p {
    margin: 0 0 16px 0;
    color: var(--text-main);
}

.course-reader-content ul,
.course-reader-content ol,
.lesson-content-rich ul,
.lesson-content-rich ol,
.formatted-content ul,
.formatted-content ol {
    margin: 0 0 18px 1.2rem;
}

.course-reader-content li,
.lesson-content-rich li,
.formatted-content li {
    margin-bottom: 8px;
}

.course-reader-content strong,
.lesson-content-rich strong,
.formatted-content strong {
    color: var(--text-main);
    font-weight: 700;
}

.course-reader-content blockquote,
.lesson-content-rich blockquote,
.formatted-content blockquote {
    margin: 18px 0;
    padding: 14px 16px;
    border-left: 4px solid var(--brand-red);
    background: var(--bg-surface-soft);
    border-radius: 12px;
    color: var(--text-muted);
}

.course-reader-content pre,
.lesson-content-rich pre,
.formatted-content pre {
    overflow-x: auto;
    padding: 16px 18px;
    border-radius: 16px;
    background: #08142f;
    color: #f6f8ff;
    font-size: 14px;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.course-reader-content code,
.lesson-content-rich code,
.formatted-content code {
    font-size: 0.9em;
}

.course-reader-content table,
.lesson-content-rich table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    font-size: 15px;
}

.course-reader-content th,
.course-reader-content td,
.lesson-content-rich th,
.lesson-content-rich td {
    border: 1px solid var(--border-soft);
    padding: 10px 12px;
    text-align: left;
}

.course-reader-content img,
.lesson-content-rich img,
.lesson-rich-content img,
.formatted-content img,
.course-reader-content video,
.lesson-content-rich video,
.lesson-rich-content video,
.formatted-content video {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 22px auto;
    border-radius: 18px;
    border: 1px solid var(--border-soft);
    background: var(--bg-surface);
    box-shadow: var(--shadow-soft);
}

.course-reader-content video,
.lesson-content-rich video,
.lesson-rich-content video,
.formatted-content video {
    width: 100%;
    max-height: 72vh;
    background: #081328;
    object-fit: contain;
}

.course-reader-content img:not([src]),
.lesson-content-rich img:not([src]),
.lesson-rich-content img:not([src]),
.formatted-content img:not([src]),
.course-reader-content img[src=""],
.lesson-content-rich img[src=""],
.lesson-rich-content img[src=""],
.formatted-content img[src=""] {
    display: none !important;
}

.course-reader-content img.lesson-media--compact,
.lesson-content-rich img.lesson-media--compact,
.lesson-rich-content img.lesson-media--compact,
.formatted-content img.lesson-media--compact {
    max-width: min(680px, 100%);
}

.course-next-block {
    margin-top: 28px;
    padding-top: 22px;
    border-top: 1px solid var(--border-soft);
}

.course-next-block__title {
    font-size: 16px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 12px;
}

.course-next-links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.mini-link-card {
    padding: 14px 16px;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.mini-link-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-soft);
    border-color: rgba(217, 41, 47, 0.18);
}

.mini-link-card__label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.mini-link-card__title {
    color: var(--text-main);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.45;
}

.course-reader-actions {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-soft);
    flex-wrap: wrap;
}

.course-reader-actions__left,
.course-reader-actions__right {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* =========
   Old accordion lesson pages
   ========= */

.lesson-accordion-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.lesson-accordion {
    border: 1px solid var(--border-soft);
    border-radius: 18px;
    background: var(--bg-surface);
    overflow: hidden;
    transition: box-shadow 0.15s ease, border-color 0.15s ease;
}

.lesson-accordion[open] {
    border-color: rgba(217, 41, 47, 0.18);
    box-shadow: var(--shadow-soft);
}

.lesson-accordion__summary {
    list-style: none;
    cursor: pointer;
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-surface-soft) 100%);
}

.lesson-accordion__summary::-webkit-details-marker {
    display: none;
}

.lesson-accordion__left {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.lesson-accordion__meta {
    min-width: 0;
}

.lesson-accordion__title {
    font-size: 16px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 4px;
}

.lesson-accordion__hint {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}

.lesson-accordion__toggle {
    font-size: 13px;
    font-weight: 700;
    color: var(--brand-red);
    white-space: nowrap;
}

.lesson-accordion__content {
    padding: 0 20px 20px 20px;
    border-top: 1px solid var(--border-soft);
    background: var(--bg-surface);
}


.lesson-completion-actions {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    margin: 18px 0 0;
}

.lesson-completion-actions form {
    margin: 0;
}

/* =========
   Quiz / practice
   ========= */

.quiz-form,
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.question-card,
.answer-item,
.result-box {
    padding: 24px;
    border-radius: 20px;
    min-width: 0;
}

.question-text {
    color: var(--text-main);
    line-height: 1.65;
    margin-bottom: 16px;
}

.question-text.formatted-content,
.quiz-result-text {
    max-width: 82ch;
    font-size: 16px;
    line-height: 1.7;
    overflow-wrap: anywhere;
}

.quiz-result-text p:last-child {
    margin-bottom: 0;
}

.quiz-result-text code,
.question-text code {
    display: inline-flex;
    align-items: center;
    max-width: 100%;
    padding: 2px 6px;
    border-radius: 7px;
    background: var(--bg-surface-soft);
    border: 1px solid var(--border-soft);
    color: var(--text-main);
    font-size: 0.92em;
    white-space: normal;
    overflow-wrap: anywhere;
}

.answer-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-soft);
    box-shadow: none;
}

.answer-item--trap {
    border-left: 4px solid var(--warning-text);
}

.quiz-answer-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.quiz-answer-heading h4 {
    margin: 0;
}

.quiz-topic-chip {
    display: inline-flex;
    align-items: center;
    max-width: 100%;
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--info-bg) !important;
    color: var(--info-text) !important;
    font-size: 12px;
    font-weight: 700;
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.quiz-explanation {
    margin-top: 16px;
    padding: 14px 16px;
    border-radius: 14px;
    background: var(--bg-surface-soft);
    border: 1px solid var(--border-soft);
}

.quiz-explanation--trap {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.quiz-diagnostic-panel .panel-header p {
    margin: 5px 0 0;
    color: var(--text-muted);
}

.quiz-diagnostic-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border-soft);
    border-radius: 16px;
}

.quiz-diagnostic-table {
    width: 100%;
    min-width: 680px;
    border-collapse: collapse;
}

.quiz-diagnostic-table th,
.quiz-diagnostic-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-soft);
    color: var(--text-main);
    text-align: left;
    vertical-align: middle;
}

.quiz-diagnostic-table th {
    background: var(--bg-surface-soft);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.quiz-diagnostic-table tbody tr:last-child td {
    border-bottom: 0;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px 18px;
    cursor: pointer;
    border: 1px solid var(--border-soft);
    border-radius: 16px;
    background: var(--bg-surface-soft);
    transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.option-item:hover {
    border-color: rgba(217, 41, 47, 0.22);
    background: var(--bg-elevated);
}

.option-item input[type="radio"],
.option-item input[type="checkbox"] {
    flex: 0 0 auto;
    margin-top: 4px;
}

.option-item span,
.option-item label,
.option-item .option-text {
    flex: 1;
    color: var(--text-main);
    line-height: 1.65;
}

.attempt-item {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    padding: 18px;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}

.result-success,
.result-danger,
.result-info {
    padding: 16px 18px;
    border-radius: 16px;
    font-weight: 600;
}

.result-success {
    background: var(--success-bg);
    color: var(--success-text);
}

.result-danger {
    background: rgba(217, 41, 47, 0.10);
    color: var(--brand-red-dark);
}

.result-info {
    background: var(--info-bg);
    color: var(--info-text);
}

.status-text-success {
    color: var(--success-text);
    font-weight: 700;
}

.status-text-danger {
    color: var(--brand-red-dark);
    font-weight: 700;
}

.status-text-info {
    color: var(--info-text);
    font-weight: 700;
}

.practice-form textarea,
.markdown-textarea {
    min-height: 220px;
    line-height: 1.65;
}

.editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.editor-btn {
    border: 1px solid var(--border-soft);
    background: var(--bg-surface-soft);
    color: var(--text-main);
    border-radius: 10px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 700;
}

.editor-btn:hover {
    background: var(--brand-red-soft);
    color: var(--brand-red);
}

.editor-help {
    margin-top: 10px;
    color: var(--text-muted);
    font-size: 13px;
}

/* =========
   Responsive
   ========= */

@media (max-width: 1400px) {
    .course-workspace {
        grid-template-columns: 300px minmax(0, 1fr);
    }
}

@media (max-width: 1280px) {
    .course-facts-grid,
    .course-summary-grid,
    .skill-summary-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .course-context-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-grid,
    .dashboard-grid-2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1100px) {
    .cards-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .courses-grid,
    .filters-grid {
        grid-template-columns: 1fr 1fr;
    }

    .welcome-hero {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 980px) {
    .course-workspace {
        grid-template-columns: 1fr;
    }

    .course-reader-title {
        font-size: 2rem;
        max-width: none;
    }

    .course-next-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 860px) {
    .cards-grid,
    .courses-grid,
    .filters-grid,
    .dashboard-grid,
    .dashboard-grid-2,
    .skill-summary-grid,
    .course-summary-grid,
    .course-facts-grid,
    .onboarding-grid-pretty {
        grid-template-columns: 1fr;
    }

    .course-reader-header,
    .attempt-item,
    .team-row,
    .search-form {
        flex-direction: column;
        align-items: stretch;
    }

    .welcome-hero {
        padding: 22px;
    }

    .welcome-title {
        font-size: 28px;
    }

    .welcome-text {
        font-size: 15px;
    }

    .welcome-actions,
    .course-reader-actions__left,
    .course-reader-actions__right {
        width: 100%;
    }

    .course-reader-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .lesson-accordion__summary,
    .course-outline-item__title-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .lesson-accordion__toggle {
        align-self: flex-end;
    }
}

/* =========================
   ЭТАП 2 — ТРЕКИ И КУРСЫ
   ========================= */

.track-page,
.course-detail-page {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.track-hero,
.course-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.8fr);
    gap: 24px;
    align-items: start;
}

.track-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(217, 41, 47, 0.08);
    color: var(--brand-red);
    font-size: 12px;
    font-weight: 800;
    margin-bottom: 12px;
}

.track-hero__main h1,
.track-hero__main h2,
.course-hero__main h1,
.course-hero__main h2 {
    margin: 0 0 10px;
    font-size: 34px;
    line-height: 1.12;
    font-weight: 900;
    color: var(--brand-dark);
}

.track-hero__main p,
.course-hero__main p {
    margin: 0;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.75;
    max-width: 920px;
}

.track-hero-card {
    padding: 20px;
    border: 1px solid var(--border-soft);
    border-radius: 22px;
    background: var(--bg-surface);
}

.track-hero-card__title {
    margin-bottom: 14px;
    font-size: 18px;
    font-weight: 800;
    color: var(--brand-dark);
}

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

.track-stat-box {
    padding: 16px 18px;
    border: 1px solid var(--border-soft);
    border-radius: 16px;
    background: var(--bg-surface);
}

.track-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(320px, 0.85fr);
    gap: 24px;
    align-items: start;
}

.track-summary-stack {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.track-summary-text {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.75;
}

.track-summary-text p {
    margin: 0 0 8px;
}

.roadmap-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.roadmap-card {
    padding: 18px;
    border: 1px solid var(--border-soft);
    border-radius: 18px;
    background: var(--bg-surface);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.roadmap-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 22px rgba(16, 24, 40, 0.05);
}

.roadmap-card__top {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) auto;
    gap: 14px;
    align-items: start;
}

.roadmap-card__step {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: linear-gradient(135deg, #e1272d 0%, #ff5a5f 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 15px;
    box-shadow: 0 8px 18px rgba(225, 39, 45, 0.18);
}

.roadmap-card__title {
    font-size: 18px;
    font-weight: 800;
    line-height: 1.35;
    color: var(--brand-dark);
    margin-bottom: 6px;
}

.roadmap-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 8px;
}

.roadmap-card__text {
    margin: 0;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.7;
}

.roadmap-card__actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 16px;
}

/* =========================================
   Scoped width for course workspaces
   ========================================= */

.course-detail-page,
.track-page,
.course-layout-modern,
.track-layout {
    width: 100%;
}

.course-detail-page,
.track-page {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.course-hero,
.track-hero {
    display: block;
}

.course-layout-modern {
    display: grid;
    grid-template-columns: 340px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

.lesson-sidebar-panel {
    position: sticky;
    top: 24px;
}

.lesson-stage-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.lesson-stage-card {
    display: block;
    padding: 16px;
    border: 1px solid var(--border-soft);
    border-radius: 18px;
    background: var(--bg-surface);
    text-decoration: none;
    color: inherit;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.lesson-stage-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 22px rgba(16, 24, 40, 0.05);
}

.lesson-stage-card.is-active {
    border-color: rgba(217, 41, 47, 0.24);
    box-shadow: 0 10px 22px rgba(225, 39, 45, 0.08);
}

.lesson-stage-card.is-completed {
    border-color: rgba(22, 101, 52, 0.18);
    background: linear-gradient(180deg, rgba(22, 163, 74, 0.045), transparent 72%), var(--bg-surface);
}

.lesson-stage-card.is-completed .lesson-stage-card__num {
    background: linear-gradient(135deg, #16a34a 0%, #22c55e 100%);
    box-shadow: 0 8px 16px rgba(22, 163, 74, 0.14);
}

.lesson-stage-card.is-completed .lesson-stage-card__status {
    color: var(--success-text);
}

.lesson-stage-card__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
}

.lesson-stage-card__num {
    width: 36px;
    height: 36px;
    border-radius: 999px;
    background: linear-gradient(135deg, #e1272d 0%, #ff5a5f 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 900;
    box-shadow: 0 8px 16px rgba(225, 39, 45, 0.16);
}

.lesson-stage-card__status {
    color: var(--brand-red);
    font-size: 12px;
    font-weight: 800;
    white-space: nowrap;
}

.lesson-stage-card__title {
    font-size: 17px;
    font-weight: 800;
    line-height: 1.35;
    color: var(--brand-dark);
    margin-bottom: 8px;
}

.lesson-stage-card__text {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.65;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.lesson-stage-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.lesson-stage-card__meta span {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.05);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
}

.course-main-panel {
    display: flex;
    flex-direction: column;
    gap: 24px;
    min-width: 0;
}

.course-summary-grid-modern {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 10px;
}

.course-about-grid {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 14px;
}

.lesson-viewer-panel {
    padding: 22px 24px;
    scroll-margin-top: 18px;
}

.lesson-viewer-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 14px;
}

.lesson-viewer-kicker {
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--brand-red);
}

.lesson-viewer-header h3 {
    margin: 0;
    font-size: clamp(28px, 2.4vw, 38px);
    line-height: 1.16;
    font-weight: 900;
    color: var(--brand-dark);
}

.lesson-viewer-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.lesson-focus-box {
    padding: 12px 16px;
    border: 1px solid rgba(217, 41, 47, 0.12);
    border-radius: 16px;
    background: linear-gradient(90deg, rgba(217, 41, 47, 0.06) 0%, rgba(217, 41, 47, 0.02) 100%);
    margin-bottom: 12px;
}

.lesson-focus-box__title {
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--brand-red);
}

.lesson-focus-box__text {
    color: var(--brand-dark);
    font-size: 15px;
    line-height: 1.6;
    max-width: 96ch;
}

.lesson-video-block {
    display: grid;
    gap: 12px;
    margin: 12px 0 22px;
}

.lesson-video-block__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.lesson-video-block__header h4 {
    margin: 0;
    color: var(--brand-dark);
    font-size: 18px;
    font-weight: 900;
}

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

.lesson-video-list--single {
    max-width: 920px;
}

.lesson-video-card {
    display: grid;
    grid-template-columns: minmax(220px, 280px) minmax(0, 1fr) auto;
    gap: 16px;
    align-items: center;
    padding: 14px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    background:
        linear-gradient(180deg, rgba(217, 41, 47, 0.045) 0%, rgba(217, 41, 47, 0.015) 100%),
        var(--bg-surface-soft);
}

.lesson-video-card--inline {
    margin: 22px 0;
}

.lesson-rich-content .lesson-video-card {
    max-width: 960px;
}

.lesson-inline-video-missing {
    margin: 18px 0;
    padding: 14px 16px;
    border: 1px solid rgba(245, 158, 11, 0.28);
    border-radius: var(--radius-md);
    background: rgba(245, 158, 11, 0.08);
    color: #a16207;
    font-weight: 800;
}

.lesson-video-card .material-preview--row {
    width: 100%;
    min-width: 0;
    height: auto;
    aspect-ratio: 16 / 9;
    border-radius: 14px;
    background: #0b1018;
}

.lesson-video-card .material-preview--row .material-preview__icon {
    width: 46px;
    height: 46px;
    border-radius: 999px;
    color: #fff;
    background: var(--brand-red);
    box-shadow: 0 14px 30px rgba(217, 41, 47, 0.24);
}

.lesson-video-card__main {
    min-width: 0;
}

.lesson-video-card__main h5 {
    margin: 0;
    color: var(--brand-dark);
    font-size: 18px;
    font-weight: 900;
}

.lesson-video-card__main p {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.lesson-video-card__actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.course-completion-next {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 20px 22px;
    scroll-margin-top: 18px;
    border-color: rgba(34, 197, 94, 0.22);
    background:
        radial-gradient(circle at top right, rgba(34, 197, 94, 0.12), transparent 34%),
        var(--bg-surface);
}

.course-completion-next__eyebrow {
    margin-bottom: 6px;
    color: var(--success-text);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.course-completion-next h3 {
    margin: 0 0 6px;
    color: var(--brand-dark);
    font-size: 20px;
    font-weight: 900;
}

.course-completion-next p {
    margin: 0;
    max-width: 720px;
    color: var(--text-muted);
    line-height: 1.7;
}

body[data-theme="dark"] .course-completion-next {
    border-color: rgba(34, 197, 94, 0.28);
}

.course-certificate-ready {
    border-left: 4px solid var(--success-text);
}

.course-certificate-ready__actions {
    flex: 0 0 auto;
    justify-content: flex-end;
}

.lesson-rich-content {
    color: var(--brand-dark);
    font-size: 16px;
    line-height: 1.85;
    overflow-x: auto;
}

.lesson-rich-content a {
    color: #2563eb;
    font-weight: 800;
    text-decoration: underline;
    text-decoration-color: rgba(37, 99, 235, 0.34);
    text-decoration-thickness: 0.08em;
    text-underline-offset: 3px;
}

.lesson-rich-content a:hover,
.lesson-rich-content a:focus {
    color: #1d4ed8;
    text-decoration-color: currentColor;
}

.lesson-rich-content h1,
.lesson-rich-content h2,
.lesson-rich-content h3,
.lesson-rich-content h4 {
    margin-top: 28px;
    margin-bottom: 12px;
    color: var(--brand-dark);
    line-height: 1.25;
    font-weight: 850;
}

.lesson-rich-content h1 { font-size: 32px; }
.lesson-rich-content h2 { font-size: 28px; }
.lesson-rich-content h3 { font-size: 22px; }
.lesson-rich-content h4 { font-size: 18px; }

.lesson-rich-content p {
    margin: 0 0 14px;
}

.lesson-rich-content figure {
    margin: 24px 0;
}

.lesson-rich-content figure img,
.lesson-rich-content li img {
    margin-bottom: 10px;
}

.lesson-rich-content li > p:first-child {
    margin-top: 0;
}

.lesson-rich-content li > p:last-child {
    margin-bottom: 0;
}

.lesson-rich-content figcaption {
    margin-top: -10px;
    color: var(--text-muted);
    font-size: 13px;
    text-align: center;
}

.lesson-rich-content .lesson-media--screenshot {
    width: auto;
}

.lesson-rich-content ul,
.lesson-rich-content ol {
    margin: 0 0 16px 20px;
    padding: 0;
}

.lesson-rich-content li {
    margin-bottom: 8px;
}

.lesson-rich-content blockquote {
    margin: 18px 0;
    padding: 14px 18px;
    border-left: 4px solid var(--brand-red);
    border-radius: 14px;
    background: rgba(15, 23, 42, 0.04);
    color: var(--text-muted);
}

.lesson-rich-content pre {
    margin: 18px 0;
    padding: 18px 20px;
    border-radius: 18px;
    overflow-x: auto;
    background: #081328;
    color: #f8fafc;
    font-size: 14px;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
}

.lesson-rich-content code {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.lesson-rich-content p code,
.lesson-rich-content li code {
    padding: 2px 7px;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.06);
    color: var(--brand-dark);
    font-size: 0.94em;
}


.lesson-rich-content table {
    width: 100%;
    min-width: 720px;
    margin: 22px 0;
    border: 1px solid var(--border-soft);
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 16px;
    overflow: hidden;
    background: var(--bg-surface);
    box-shadow: var(--shadow-soft);
    font-size: 15px;
    line-height: 1.7;
}

.lesson-rich-content th,
.lesson-rich-content td {
    padding: 14px 16px;
    border-right: 1px solid var(--border-soft);
    border-bottom: 1px solid var(--border-soft);
    vertical-align: top;
    text-align: left;
}

.lesson-rich-content th {
    background: var(--bg-surface-soft);
    color: var(--text-main);
    font-weight: 900;
}

.lesson-rich-content td {
    color: var(--text-main);
}

.lesson-rich-content td:first-child {
    min-width: 180px;
    font-weight: 800;
}

.lesson-rich-content th:last-child,
.lesson-rich-content td:last-child {
    border-right: 0;
}

.lesson-rich-content tr:last-child td {
    border-bottom: 0;
}

.lesson-rich-content table code,
.lesson-rich-content table mark {
    white-space: nowrap;
}

.lesson-help {
    position: relative;
    display: inline-block;
    vertical-align: super;
    margin-left: 3px;
    outline: none;
    line-height: 0;
    white-space: nowrap;
}

.lesson-help__mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: rgba(225, 39, 45, 0.12);
    color: var(--brand-red);
    border: 1px solid rgba(225, 39, 45, 0.24);
    font-size: 10px;
    line-height: 1;
    font-weight: 900;
    cursor: help;
    transform: translateY(-1px);
    transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.lesson-help:hover .lesson-help__mark,
.lesson-help:focus .lesson-help__mark,
.lesson-help:focus-within .lesson-help__mark {
    background: var(--brand-red);
    border-color: var(--brand-red);
    color: #ffffff;
    transform: translateY(-2px);
}

.lesson-help__tooltip {
    position: absolute;
    left: calc(100% + 10px);
    top: 50%;
    z-index: 60;
    width: max-content;
    min-width: 180px;
    max-width: min(340px, calc(100vw - 72px));
    padding: 10px 12px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 12px;
    background: #ffffff;
    color: #0f172a;
    box-shadow: 0 16px 38px rgba(15, 23, 42, 0.18);
    font-size: 12px;
    line-height: 1.45;
    font-weight: 650;
    text-align: left;
    white-space: normal;
    overflow-wrap: anywhere;
    opacity: 0;
    visibility: hidden;
    transform: translate(0, -50%) scale(0.98);
    transform-origin: left center;
    transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s ease;
    pointer-events: none;
}

.lesson-help__tooltip::after {
    content: "";
    position: absolute;
    right: 100%;
    top: 50%;
    width: 10px;
    height: 10px;
    background: inherit;
    border-left: 1px solid rgba(15, 23, 42, 0.12);
    border-bottom: 1px solid rgba(15, 23, 42, 0.12);
    transform: translate(5px, -50%) rotate(45deg);
}

.lesson-help:hover .lesson-help__tooltip,
.lesson-help:focus .lesson-help__tooltip,
.lesson-help:focus-within .lesson-help__tooltip {
    opacity: 1;
    visibility: visible;
    transform: translate(0, -50%) scale(1);
}

.lesson-rich-content hr {
    margin: 22px 0;
    border: none;
    border-top: 1px solid var(--border-soft);
}

.lesson-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 20px;
    padding-top: 14px;
    border-top: 1px solid var(--border-soft);
}

.track-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(320px, 0.85fr);
    gap: 24px;
    align-items: start;
}

.track-summary-stack {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.roadmap-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.roadmap-card {
    padding: 18px;
    border: 1px solid var(--border-soft);
    border-radius: 18px;
    background: var(--bg-surface);
}

.roadmap-card__top {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) auto;
    gap: 14px;
    align-items: start;
}

.roadmap-card__step {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: linear-gradient(135deg, #e1272d 0%, #ff5a5f 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 15px;
}

.roadmap-card__title {
    font-size: 18px;
    font-weight: 800;
    line-height: 1.35;
    color: var(--brand-dark);
    margin-bottom: 6px;
}

.roadmap-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 8px;
}

.roadmap-card__text {
    margin: 0;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.7;
}

.roadmap-card__actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 16px;
}

body[data-theme="dark"] .lesson-stage-card,
body[data-theme="dark"] .roadmap-card,
body[data-theme="dark"] .lesson-stage-card__meta span,
body[data-theme="dark"] .lesson-focus-box,
body[data-theme="dark"] .lesson-video-card {
    background: var(--bg-elevated);
}

body[data-theme="dark"] .lesson-rich-content,
body[data-theme="dark"] .lesson-focus-box__text,
body[data-theme="dark"] .lesson-stage-card__title,
body[data-theme="dark"] .roadmap-card__title,
body[data-theme="dark"] .lesson-viewer-header h3,
body[data-theme="dark"] .lesson-video-block__header h4,
body[data-theme="dark"] .lesson-video-card__main h5 {
    color: #f8fafc;
}

body[data-theme="dark"] .lesson-rich-content p code,
body[data-theme="dark"] .lesson-rich-content li code {
    background: rgba(255, 255, 255, 0.08);
    color: #f8fafc;
}

body[data-theme="dark"] .lesson-rich-content a {
    color: #93c5fd;
    text-decoration-color: rgba(147, 197, 253, 0.42);
}

body[data-theme="dark"] .lesson-rich-content a:hover,
body[data-theme="dark"] .lesson-rich-content a:focus {
    color: #bfdbfe;
    text-decoration-color: currentColor;
}

body[data-theme="dark"] .lesson-rich-content table {
    background: var(--bg-surface-soft);
    border-color: rgba(148, 163, 184, 0.20);
}

body[data-theme="dark"] .lesson-rich-content th {
    background: rgba(15, 23, 42, 0.62);
}

body[data-theme="dark"] .lesson-rich-content th,
body[data-theme="dark"] .lesson-rich-content td {
    border-color: rgba(148, 163, 184, 0.20);
}


body[data-theme="dark"] .lesson-help__mark {
    background: rgba(255, 90, 95, 0.14);
    color: #ff6b70;
    border-color: rgba(255, 90, 95, 0.24);
}

body[data-theme="dark"] .lesson-help__tooltip {
    background: #172235;
    color: #f8fafc;
    border-color: rgba(148, 163, 184, 0.26);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.34);
}

body[data-theme="dark"] .lesson-help__tooltip::after {
    border-color: rgba(148, 163, 184, 0.26);
}

body[data-theme="dark"] .lesson-rich-content blockquote {
    background: rgba(255, 255, 255, 0.05);
}

@media (max-width: 760px) {
    .lesson-help__tooltip {
        left: 50%;
        top: calc(100% + 10px);
        min-width: 180px;
        max-width: min(280px, calc(100vw - 40px));
        transform: translate(-50%, 4px) scale(0.98);
        transform-origin: top center;
    }

    .lesson-help__tooltip::after {
        right: auto;
        left: 50%;
        top: auto;
        bottom: 100%;
        border-left: 1px solid rgba(15, 23, 42, 0.12);
        border-top: 1px solid rgba(15, 23, 42, 0.12);
        border-right: 0;
        border-bottom: 0;
        transform: translate(-50%, 5px) rotate(45deg);
    }

    .lesson-help:hover .lesson-help__tooltip,
    .lesson-help:focus .lesson-help__tooltip,
    .lesson-help:focus-within .lesson-help__tooltip {
        transform: translate(-50%, 0) scale(1);
    }
}

@media (max-width: 1280px) {
    .course-layout-modern,
    .track-layout {
        grid-template-columns: 1fr;
    }

    .lesson-sidebar-panel {
        position: static;
    }
}

@media (max-width: 860px) {
    .course-summary-grid-modern,
    .course-about-grid {
        grid-template-columns: 1fr;
    }

    .lesson-viewer-header,
    .lesson-nav {
        flex-direction: column;
        align-items: flex-start;
    }

    .roadmap-card__top {
        grid-template-columns: 1fr;
    }

    .lesson-viewer-header h3 {
        font-size: 30px;
    }

    .lesson-video-card {
        grid-template-columns: 1fr;
        align-items: stretch;
    }

    .lesson-video-card__actions {
        justify-content: flex-start;
    }

    .lesson-video-card__actions .btn {
        width: 100%;
        justify-content: center;
    }
}

.status-new {
    background: rgba(217, 41, 47, 0.12);
    color: var(--brand-red);
}

/* =========
   Materials
   ========= */

.materials-page,
.materials-sections {
    display: grid;
    gap: 20px;
    align-items: start;
}

.materials-hero {
    background:
        radial-gradient(circle at top right, rgba(217, 41, 47, 0.12), transparent 28%),
        linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-surface-soft) 100%);
}

.materials-hero__content {
    max-width: 840px;
}

.materials-summary-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.materials-summary-pill {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-main);
    font-size: 13px;
    font-weight: 700;
    border: 1px solid var(--border-soft);
}

.materials-summary-pill--soft {
    background: var(--brand-red-soft);
    color: var(--brand-red);
}

.materials-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);
    gap: 24px;
    align-items: start;
}

.materials-overview {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.materials-overview__card {
    padding: 18px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.04);
}

.materials-overview__value {
    display: block;
    margin-top: 8px;
    color: var(--text-main);
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
}

.materials-hero__types {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.materials-type-pill {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-main);
    font-size: 13px;
    font-weight: 700;
    border: 1px solid var(--border-soft);
}

.materials-filter-panel {
    padding-bottom: 16px;
}

.materials-filter-grid {
    align-items: end;
}

.materials-filter-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 2px;
}

.materials-disclosure {
    padding: 0;
    overflow: hidden;
}

.materials-disclosure summary {
    list-style: none;
    cursor: pointer;
}

.materials-disclosure summary::-webkit-details-marker {
    display: none;
}

.materials-disclosure__summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 18px 22px;
}

.materials-disclosure__lead {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    min-width: 0;
}

.materials-disclosure__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    border-radius: 999px;
    background: var(--bg-surface-soft);
    color: var(--text-main);
    border: 1px solid var(--border-soft);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
    transition:
        transform 0.18s ease,
        background 0.18s ease,
        border-color 0.18s ease;
}

.materials-disclosure[open] .materials-disclosure__toggle {
    transform: rotate(180deg);
    background: var(--brand-red-soft);
    border-color: rgba(217, 41, 47, 0.22);
    color: var(--brand-red);
}

.materials-disclosure__main {
    min-width: 0;
}

.materials-disclosure__main h3 {
    margin: 0;
}

.materials-disclosure__eyebrow {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 700;
}

.materials-disclosure__meta {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 10px;
}

.materials-disclosure__course-link {
    min-height: 34px;
}

.materials-disclosure__body {
    padding: 12px 22px 22px;
    border-top: 1px solid var(--border-soft);
    animation: materialsReveal 0.22s ease;
}

.materials-course-panel {
    overflow: hidden;
}

.materials-course-panel__top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 22px;
}

.materials-course-panel__intro h3 {
    margin-bottom: 10px;
}

.materials-course-panel__eyebrow {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 10px;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 700;
}

.materials-course-panel__stats {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.materials-course-stat {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 6px 11px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-soft);
    font-size: 13px;
    font-weight: 700;
    border: 1px solid var(--border-soft);
}

.materials-disclosure__sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 330px), 1fr));
    gap: 16px;
    align-items: start;
}

.materials-compact-section {
    display: grid;
    gap: 12px;
    align-self: start;
    padding: 16px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.01) 100%),
        var(--bg-surface-soft);
}

.materials-compact-section + .materials-compact-section {
    margin-top: 0;
}

.materials-compact-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.materials-compact-section__header h4 {
    margin: 0;
    color: var(--text-main);
}

.materials-compact-section__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    min-height: 34px;
    padding: 0 10px;
    border-radius: 999px;
    background: var(--bg-surface-soft);
    color: var(--text-main);
    font-weight: 800;
    border: 1px solid var(--border-soft);
}

.materials-list {
    display: grid;
    gap: 10px;
}

.materials-list--course {
    gap: 10px;
}

.materials-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-soft);
}

.materials-list-item--course {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.01) 100%),
        var(--bg-surface-soft);
    border-radius: var(--radius-lg);
    padding: 12px 14px;
}

.materials-list--single {
    max-width: 820px;
}

.materials-list-item--single {
    flex-direction: row;
    align-items: center;
    gap: 12px;
}

.materials-list-item--single .materials-list-item__actions {
    justify-content: flex-start;
}

.materials-block__caption {
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 700;
}

.materials-list-item__main {
    flex: 1 1 auto;
    min-width: 0;
}

.materials-list-item__top {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 6px;
}

.materials-list-item__top h4 {
    margin: 0;
}

.material-title-preview {
    border: 0;
    padding: 0;
    background: transparent;
    color: inherit;
    font: inherit;
    font-weight: inherit;
    text-align: left;
    cursor: pointer;
}

.material-title-preview:hover {
    color: var(--brand-red);
}

.materials-list-item__main p {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.materials-list-item__source {
    margin-bottom: 6px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 800;
}

.materials-list-item__actions {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.material-preview {
    border: 0;
    padding: 0;
    background: var(--bg-surface-soft);
    cursor: zoom-in;
    color: inherit;
    position: relative;
}

.material-preview--video {
    cursor: pointer;
}

.material-preview--card {
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-soft);
    display: grid;
    place-items: center;
}

.material-preview--custom-cover {
    background: var(--bg-surface);
}

.material-preview--image-card {
    width: 96px;
    min-width: 96px;
    height: 68px;
}

.material-preview--row {
    width: 44px;
    min-width: 44px;
    height: 32px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-soft);
    display: grid;
    place-items: center;
}

.material-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.18s ease;
}

.material-preview:hover img,
.material-preview:hover .material-preview__icon {
    transform: scale(1.04);
}

.material-preview__icon {
    width: 34px;
    height: 34px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: rgba(217, 41, 47, 0.12);
    color: var(--brand-red);
    font-weight: 900;
    transition: transform 0.18s ease;
}

.material-preview__icon::before {
    content: "↗";
}

.material-preview--row .material-preview__icon {
    width: 24px;
    height: 24px;
    border-radius: 8px;
    font-size: 12px;
}

.material-preview--link .material-preview__icon::before,
.material-lightbox__icon--link::before {
    content: "URL";
    font-size: 11px;
}

.material-preview--file .material-preview__icon::before,
.material-lightbox__icon--file::before {
    content: "DOC";
    font-size: 11px;
}

.material-preview--video .material-preview__icon::before,
.material-lightbox__icon--video::before {
    content: "▶";
}

.material-preview--note .material-preview__icon::before,
.material-lightbox__icon--note::before {
    content: "TXT";
    font-size: 11px;
}

.materials-course-layout {
    display: grid;
    gap: 18px;
}

.materials-context-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.materials-surface-card {
    padding: 18px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.01) 100%),
        var(--bg-surface-soft);
}

.materials-surface-card--wide {
    padding: 20px;
}

.materials-surface-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}

.materials-surface-card__label {
    margin-bottom: 6px;
    color: var(--text-soft);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.materials-surface-card__header h4 {
    margin: 0;
    color: var(--text-main);
    font-size: 1.05rem;
}

.materials-surface-card__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    min-height: 36px;
    padding: 0 12px;
    border-radius: 999px;
    background: var(--bg-main);
    color: var(--text-main);
    font-weight: 800;
    border: 1px solid var(--border-soft);
}

.materials-group {
    display: grid;
    gap: 16px;
    margin-top: 18px;
}

.materials-group__title {
    margin: 0;
    color: var(--text-main);
    font-size: 1rem;
    font-weight: 800;
}

.materials-group-list {
    display: grid;
    gap: 14px;
}

.materials-subgroup {
    padding: 18px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    background: var(--bg-surface-soft);
}

.materials-subgroup__header,
.materials-block__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.materials-subgroup__header h4,
.materials-block__header h4,
.material-card h4,
.material-card h5,
.mini-materials__title {
    margin: 0;
}

.materials-subgroup__meta {
    margin: 6px 0 0;
    color: var(--text-muted);
    font-size: 13px;
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}

.materials-block {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid var(--border-soft);
}

.materials-block__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    min-height: 32px;
    padding: 0 10px;
    border-radius: 999px;
    background: var(--brand-red-soft);
    color: var(--brand-red);
    font-weight: 800;
}

.material-card {
    display: grid;
    gap: 12px;
    padding: 18px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    background: var(--bg-surface-soft);
}

.material-card__meta {
    display: flex;
    align-items: center;
    gap: 8px;
}

.material-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: auto;
}

.mini-materials {
    display: grid;
    gap: 10px;
    margin-top: 14px;
}

.mini-materials__title {
    color: var(--text-main);
    font-size: 14px;
    font-weight: 800;
}

.mini-materials__list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.mini-materials__list--compact {
    display: grid;
    gap: 10px;
}

.mini-material-row {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    padding: 9px 10px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-soft);
}

.course-detail-page .panel-header {
    margin-bottom: 12px;
}

.course-detail-page .summary-box {
    padding: 14px 16px;
}

.course-detail-page .panel {
    padding: 20px;
}

.course-detail-page .course-hero {
    padding: 20px;
}

body[data-theme="dark"] .course-detail-page .panel,
body[data-theme="dark"] .course-detail-page .course-hero {
    padding: 20px;
}

.mini-material-link {
    min-width: 0;
    color: var(--text-main);
    font-weight: 700;
    text-decoration: none;
    overflow-wrap: anywhere;
}

.mini-material-link--button {
    border: 0;
    padding: 0;
    background: transparent;
    text-align: left;
    cursor: zoom-in;
}

.mini-material-link:hover {
    color: var(--brand-red);
}

.mini-material-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 34px;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--brand-red-soft);
    color: var(--brand-red);
    font-size: 13px;
    font-weight: 700;
    border: 1px solid transparent;
    transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.mini-material-chip--button {
    cursor: zoom-in;
}

.mini-material-chip--file,
.mini-material-chip--link,
.mini-material-chip--video,
.mini-material-chip--note {
    background: var(--bg-surface-soft);
    color: var(--text-main);
    border-color: var(--border-soft);
}

.mini-material-chip:hover {
    background: rgba(217, 41, 47, 0.14);
    border-color: var(--border-accent);
}

.materials-type-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 30px;
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--brand-red-soft);
    color: var(--brand-red);
    font-size: 12px;
    font-weight: 800;
    border: 1px solid rgba(217, 41, 47, 0.14);
    white-space: nowrap;
}

.materials-type-chip::before {
    font-size: 13px;
    line-height: 1;
}

.materials-type-chip--file::before {
    content: "↗";
}

.materials-type-chip--link::before {
    content: "URL";
    font-size: 10px;
}

.materials-type-chip--video::before {
    content: "▶";
}

.materials-type-chip--image::before {
    content: "◫";
}

.materials-type-chip--note::before {
    content: "•";
}

.has-material-lightbox {
    overflow: hidden;
}

.material-lightbox {
    position: fixed !important;
    inset: 0 !important;
    z-index: 5000 !important;
    display: none !important;
    align-items: center;
    justify-content: center;
    padding: 28px;
    color: var(--text-main);
}

.material-lightbox.is-open {
    display: flex !important;
}

.material-lightbox__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(11, 16, 24, 0.74);
    backdrop-filter: blur(4px);
}

.material-lightbox__dialog {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 12px;
    width: min(1120px, 94vw);
    max-height: 90vh;
    padding: 14px;
    border-radius: 18px;
    background: var(--bg-surface);
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-card);
    overflow-y: auto;
    overscroll-behavior: contain;
}

.material-lightbox--compact .material-lightbox__dialog {
    width: min(640px, 94vw);
    padding: 20px;
}

.material-lightbox__media {
    display: grid;
    place-items: center;
    min-height: 220px;
    max-height: min(520px, 58vh);
    border-radius: 12px;
    overflow: hidden;
    background:
        linear-gradient(135deg, rgba(217, 41, 47, 0.08), rgba(31, 44, 68, 0.05)),
        var(--bg-main);
}

.material-lightbox--compact .material-lightbox__media {
    min-height: 132px;
}

.material-lightbox__image {
    display: block;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: min(520px, 58vh);
    object-fit: contain;
}

.material-lightbox__image--cover {
    max-width: 100%;
    max-height: min(420px, 52vh);
    object-fit: contain;
}

.material-lightbox__video {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    min-height: 280px;
    max-height: min(520px, 58vh);
    border: 0;
    border-radius: 12px;
    background: #000;
    object-fit: contain;
}

.material-lightbox__content {
    display: grid;
    gap: 10px;
}

.material-lightbox__meta {
    color: var(--brand-red);
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
}

.material-lightbox__title {
    color: var(--text-main);
    font-size: 22px;
    font-weight: 800;
    line-height: 1.35;
}

.material-lightbox__description {
    color: var(--text-soft);
    line-height: 1.55;
}

.material-lightbox__action {
    justify-self: start;
    margin-top: 4px;
}

.material-lightbox__icon {
    width: 86px;
    height: 86px;
    border-radius: 22px;
    display: grid;
    place-items: center;
    background: var(--brand-red-soft);
    color: var(--brand-red);
    font-size: 22px;
    font-weight: 900;
    border: 1px solid rgba(217, 41, 47, 0.16);
}

.material-lightbox__media-label {
    margin-top: 12px;
    color: var(--text-main);
    font-weight: 900;
}

.material-lightbox__close {
    position: absolute;
    z-index: 5;
    display: grid;
    place-items: center;
    pointer-events: auto;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-soft);
    border-radius: 999px;
    background: var(--bg-surface);
    color: var(--text-main);
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
}

@keyframes materialsReveal {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.materials-empty-panel {
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.materials-empty-state {
    max-width: 620px;
    text-align: center;
}

.materials-empty-state__badge {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--brand-red-soft);
    color: var(--brand-red);
    font-size: 13px;
    font-weight: 800;
}

.materials-empty-state h3 {
    margin-top: 18px;
    margin-bottom: 10px;
}

.materials-empty-state__actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 18px;
}

@media (max-width: 860px) {
    .material-lightbox {
        padding: 14px;
    }

    .material-lightbox__dialog {
        width: min(100%, 94vw);
        max-height: 92vh;
        padding: 12px;
    }

    .material-lightbox__video {
        min-height: 190px;
    }

    .materials-filter-actions,
    .materials-empty-state__actions {
        flex-wrap: wrap;
        justify-content: flex-start;
    }

    .materials-disclosure__summary {
        flex-direction: column;
        align-items: flex-start;
    }

    .materials-disclosure__lead,
    .materials-disclosure__meta,
    .materials-disclosure__course-link {
        justify-content: flex-start;
    }

    .materials-disclosure__sections,
    .materials-list-item {
        grid-template-columns: 1fr;
        flex-direction: column;
        align-items: flex-start;
    }

    .materials-subgroup__header,
    .materials-block__header,
    .materials-surface-card__header,
    .materials-compact-section__header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* =========
   Quiz take page
   ========= */

.quiz-page {
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-width: 0;
}

.quiz-page > *,
.quiz-layout,
.quiz-layout > *,
.quiz-page .hero-card {
    min-width: 0;
}

.quiz-page .hero-card h2,
.quiz-description {
    overflow-wrap: anywhere;
}

.quiz-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 20px;
    align-items: start;
}

.quiz-main-panel {
    padding: 22px;
    min-width: 0;
}

.quiz-sidebar {
    position: sticky;
    top: 24px;
    padding: 20px;
    max-height: calc(100vh - 48px);
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
}

.quiz-top-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

.quiz-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    max-width: 100%;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--border-soft);
    background: var(--bg-surface-soft);
    color: var(--text-main);
    font-size: 13px;
    font-weight: 700;
    white-space: normal;
    overflow-wrap: anywhere;
}

.quiz-description {
    margin-top: 10px;
}

.quiz-description p:last-child {
    margin-bottom: 0;
}

.quiz-question-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.quiz-question-card {
    border: 1px solid var(--border-soft);
    border-radius: 20px;
    background: var(--bg-surface);
    padding: 20px;
    box-shadow: var(--shadow-soft);
    min-width: 0;
    scroll-margin-top: 24px;
}

body[data-theme="dark"] .quiz-question-card {
    background: var(--bg-surface);
    box-shadow: none;
}

.quiz-question-card__head {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 16px;
}

.quiz-question-card__content {
    flex: 1;
    min-width: 0;
}

.quiz-question-card__num {
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: 14px;
    background: linear-gradient(135deg, #e1272d 0%, #ff4d4f 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 15px;
    box-shadow: 0 10px 20px rgba(225, 39, 45, 0.18);
}

.quiz-question-card__title {
    margin: 0 0 8px 0;
    font-size: 19px;
    line-height: 1.45;
    color: var(--text-main);
    overflow-wrap: anywhere;
}

.quiz-question-card__title p {
    margin: 0 0 8px;
}

.quiz-question-card__title p:last-child {
    margin-bottom: 0;
}

.quiz-question-card__title code {
    display: inline-flex;
    max-width: 100%;
    white-space: normal;
    overflow-wrap: anywhere;
}

.quiz-question-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.quiz-question-card__meta span {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--brand-red-soft);
    color: var(--brand-red);
    font-size: 12px;
    font-weight: 700;
}

.quiz-answer-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.quiz-answer-option {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    border: 1px solid var(--border-soft);
    border-radius: 16px;
    background: var(--bg-surface-soft);
    cursor: pointer;
    transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.quiz-answer-option:hover {
    border-color: rgba(225, 39, 45, 0.28);
    transform: translateY(-1px);
    box-shadow: var(--shadow-soft);
}

.quiz-answer-option.is-selected {
    border-color: rgba(225, 39, 45, 0.35);
    background: rgba(217, 41, 47, 0.06);
}

body[data-theme="dark"] .quiz-answer-option {
    background: var(--bg-surface-soft);
}

body[data-theme="dark"] .quiz-answer-option.is-selected {
    background: rgba(255, 90, 95, 0.08);
    border-color: rgba(255, 90, 95, 0.35);
}

.quiz-answer-option input[type="radio"],
.quiz-answer-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    min-width: 18px;
    margin: 2px 0 0 0;
    accent-color: #e1272d;
    cursor: pointer;
}

.quiz-answer-option__text {
    min-width: 0;
    line-height: 1.6;
    color: var(--text-main);
    font-size: 15px;
    overflow-wrap: anywhere;
}

.quiz-answer-option__text code,
.quiz-result-option-text code {
    display: inline;
    max-width: 100%;
    padding: 2px 6px;
    border: 1px solid var(--border-soft);
    border-radius: 7px;
    background: var(--bg-elevated);
    color: var(--text-main);
    font-size: 0.92em;
    white-space: normal;
    overflow-wrap: anywhere;
}

.quiz-result-option-text {
    overflow-wrap: anywhere;
}

.quiz-sidebar__section + .quiz-sidebar__section {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--border-soft);
}

.quiz-sidebar__title {
    margin: 0 0 12px 0;
    font-size: 15px;
    font-weight: 800;
    color: var(--text-main);
}

.quiz-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.quiz-stat-box {
    padding: 14px;
    border-radius: 16px;
    border: 1px solid var(--border-soft);
    background: var(--bg-surface-soft);
}

.quiz-stat-box__label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.quiz-stat-box__value {
    font-size: 18px;
    font-weight: 800;
    color: var(--text-main);
}

.quiz-stat-box__value--compact {
    font-size: 14px;
    line-height: 1.35;
}

.quiz-nav-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
    max-height: min(42vh, 440px);
    padding-right: 4px;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
}

.quiz-nav-link {
    height: 40px;
    border-radius: 12px;
    border: 1px solid var(--border-soft);
    background: var(--bg-surface-soft);
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-weight: 800;
    transition: 0.18s ease;
}

.quiz-nav-link:hover {
    border-color: rgba(225, 39, 45, 0.35);
    color: var(--brand-red);
}

.quiz-nav-link.is-answered {
    background: rgba(217, 41, 47, 0.09);
    color: var(--brand-red);
    border-color: rgba(217, 41, 47, 0.20);
}

.quiz-note {
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(217, 41, 47, 0.06);
    border: 1px solid rgba(217, 41, 47, 0.12);
    color: var(--text-main);
    line-height: 1.65;
    font-size: 14px;
}

.quiz-autosave-status {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    padding: 12px 14px;
    border: 1px solid var(--border-soft);
    border-radius: 14px;
    background: var(--bg-surface-soft);
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 700;
    line-height: 1.45;
}

.quiz-autosave-status__dot {
    width: 8px;
    height: 8px;
    min-width: 8px;
    margin-top: 5px;
    border-radius: 50%;
    background: var(--text-muted);
}

.quiz-autosave-status[data-state="saved"],
.quiz-autosave-status[data-state="restored"] {
    color: var(--success-text);
    background: var(--success-bg);
}

.quiz-autosave-status[data-state="saved"] .quiz-autosave-status__dot,
.quiz-autosave-status[data-state="restored"] .quiz-autosave-status__dot {
    background: var(--success-text);
}

.quiz-autosave-status[data-state="saving"] {
    color: var(--info-text);
    background: var(--info-bg);
}

.quiz-autosave-status[data-state="saving"] .quiz-autosave-status__dot {
    background: var(--info-text);
}

.quiz-autosave-status[data-state="unavailable"] {
    color: var(--brand-red-dark);
    background: var(--brand-red-soft);
}

.quiz-autosave-status[data-state="unavailable"] .quiz-autosave-status__dot {
    background: var(--brand-red);
}

.quiz-submit-box {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.quiz-submit-box .btn {
    width: 100%;
    justify-content: center;
}

.quiz-footer-hint {
    font-size: 13px;
    color: var(--text-muted);
    text-align: center;
    line-height: 1.6;
}

@media (max-width: 1200px) {
    .quiz-layout {
        grid-template-columns: 1fr;
    }

    .quiz-sidebar {
        position: static;
        max-height: none;
        overflow: visible;
        scrollbar-gutter: auto;
    }
}

@media (max-width: 720px) {
    .course-completion-next {
        align-items: flex-start;
        flex-direction: column;
    }

    .course-certificate-ready__actions,
    .course-certificate-ready__actions .btn {
        width: 100%;
    }

    .quiz-question-card {
        padding: 16px;
    }

    .quiz-question-card__head {
        gap: 10px;
    }

    .quiz-question-card__num {
        width: 34px;
        height: 34px;
        min-width: 34px;
        border-radius: 12px;
    }

    .quiz-question-card__title {
        font-size: 17px;
    }

    .quiz-nav-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        max-height: 280px;
    }

    .quiz-stats {
        grid-template-columns: 1fr 1fr;
    }

    .result-grid {
        grid-template-columns: 1fr;
    }
}

/* =========
   Quiz catalog, detail and result
   ========= */

.quiz-catalog-page,
.quiz-detail-page,
.quiz-result-page {
    display: grid;
    gap: 20px;
    min-width: 0;
}

.quiz-page-kicker {
    display: inline-flex;
    margin-bottom: 7px;
    color: var(--brand-red);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.045em;
    line-height: 1.3;
    text-transform: uppercase;
}

.quiz-page-breadcrumbs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    min-width: 0;
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.45;
}

.quiz-page-breadcrumbs a {
    color: var(--brand-red);
    font-weight: 750;
    text-decoration: none;
}

.quiz-page-breadcrumbs a:hover {
    text-decoration: underline;
}

.quiz-page-breadcrumbs span[aria-current="page"] {
    min-width: 0;
    overflow-wrap: anywhere;
}

.quiz-catalog-hero,
.quiz-detail-hero,
.quiz-result-hero {
    min-width: 0;
    overflow: hidden;
}

.quiz-catalog-hero {
    padding-block: 24px;
    background:
        linear-gradient(115deg, var(--bg-surface) 0%, var(--bg-surface) 72%, var(--brand-red-soft) 100%);
}

.quiz-catalog-hero h2,
.quiz-detail-hero h2,
.quiz-result-hero h2 {
    margin: 0;
    overflow-wrap: anywhere;
}

.quiz-catalog-hero p,
.quiz-detail-description,
.quiz-result-hero__header p {
    max-width: 78ch;
    margin: 8px 0 0;
    color: var(--text-muted);
    line-height: 1.65;
}

.quiz-catalog-filters {
    margin-bottom: 0;
}

.quiz-catalog-filters__grid {
    grid-template-columns: minmax(220px, 1.35fr) repeat(2, minmax(180px, 1fr));
}

.quiz-catalog-filters__actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 10px;
}

.quiz-catalog-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    align-items: stretch;
}

.quiz-catalog-card {
    display: flex;
    flex-direction: column;
    gap: 18px;
    min-width: 0;
    padding: 22px;
    border: 1px solid var(--border-soft);
    border-radius: 22px;
    background: var(--bg-surface);
    box-shadow: var(--shadow-soft);
}

body[data-theme="dark"] .quiz-catalog-card {
    box-shadow: none;
}

.quiz-catalog-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    min-width: 0;
}

.quiz-catalog-card__heading {
    min-width: 0;
}

.quiz-catalog-card__scope {
    display: inline-flex;
    margin-bottom: 8px;
    color: var(--brand-red);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.quiz-catalog-card__title {
    margin: 0;
    color: var(--text-main);
    font-size: 20px;
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.quiz-catalog-card__title a {
    color: inherit;
    text-decoration: none;
}

.quiz-catalog-card__title a:hover {
    color: var(--brand-red);
}

.quiz-catalog-card__course {
    margin: 7px 0 0;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 650;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.quiz-catalog-card__description {
    display: -webkit-box;
    min-height: 4.8em;
    margin: 0;
    overflow: hidden;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
    overflow-wrap: anywhere;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
}

.quiz-catalog-card__meta,
.quiz-detail-meta,
.quiz-answer-summary,
.quiz-result-summary-grid {
    margin: 0;
}

.quiz-catalog-card__meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.quiz-catalog-card__meta > div,
.quiz-detail-meta > div,
.quiz-answer-summary > div {
    min-width: 0;
    padding: 12px 14px;
    border: 1px solid var(--border-soft);
    border-radius: 14px;
    background: var(--bg-surface-soft);
}

.quiz-catalog-card__meta dt,
.quiz-detail-meta dt,
.quiz-answer-summary dt,
.quiz-result-stat dt {
    margin: 0 0 5px;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 750;
    line-height: 1.35;
    text-transform: uppercase;
}

.quiz-catalog-card__meta dd,
.quiz-detail-meta dd,
.quiz-answer-summary dd,
.quiz-result-stat dd {
    min-width: 0;
    margin: 0;
    color: var(--text-main);
    font-weight: 800;
    line-height: 1.45;
    overflow-wrap: anywhere;
}

.quiz-catalog-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--border-soft);
}

.quiz-catalog-card__hint {
    max-width: 34ch;
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1.5;
}

.quiz-catalog-empty {
    margin-top: 0;
}

.quiz-catalog-empty .btn {
    margin-top: 8px;
}

.quiz-detail-hero__header,
.quiz-result-hero__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    min-width: 0;
}

.quiz-detail-hero__heading,
.quiz-result-hero__header > div {
    min-width: 0;
}

.quiz-detail-description.formatted-content p:last-child {
    margin-bottom: 0;
}

.quiz-detail-meta {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    margin-top: 20px;
}

.quiz-detail-meta__wide {
    grid-column: span 2;
}

.quiz-detail-notice {
    margin-top: 18px;
    font-size: 14px;
    line-height: 1.55;
}

.quiz-detail-actionbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-top: 18px;
    padding: 16px 18px;
    border: 1px solid var(--border-soft);
    border-radius: 16px;
    background: var(--bg-surface-soft);
}

.quiz-detail-actionbar form {
    flex: 0 0 auto;
    margin: 0;
}

.quiz-detail-actionbar__copy {
    display: grid;
    gap: 4px;
    min-width: 0;
}

.quiz-detail-actionbar__copy strong {
    color: var(--text-main);
    font-size: 15px;
}

.quiz-detail-actionbar__copy span {
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.5;
}

.quiz-history-panel__header,
.quiz-review-panel__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}

.quiz-history-panel__header h3,
.quiz-review-panel__header h3,
.quiz-section-header h3 {
    margin: 0;
}

.quiz-history-panel__header p,
.quiz-review-panel__header p {
    margin: 6px 0 0;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.55;
}

.quiz-history-count {
    display: inline-flex;
    flex: 0 0 auto;
    padding: 7px 10px;
    border-radius: 999px;
    background: var(--info-bg);
    color: var(--info-text);
    font-size: 12px;
    font-weight: 800;
}

.quiz-attempt-list {
    display: grid;
    gap: 10px;
}

.quiz-attempt-row {
    display: grid;
    grid-template-columns: minmax(210px, 1fr) minmax(180px, 0.65fr) auto;
    align-items: center;
    gap: 16px;
    min-width: 0;
    padding: 15px 16px;
    border: 1px solid var(--border-soft);
    border-radius: 16px;
    background: var(--bg-surface-soft);
}

.quiz-attempt-row--active {
    border-color: var(--border-accent);
    background: var(--info-bg);
}

.quiz-attempt-row__identity {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.quiz-attempt-row__number,
.quiz-review-card__number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: var(--brand-red-soft);
    color: var(--brand-red);
    font-size: 13px;
    font-weight: 850;
}

.quiz-attempt-row__identity > div,
.quiz-attempt-row__result {
    display: grid;
    gap: 3px;
    min-width: 0;
}

.quiz-attempt-row__identity strong,
.quiz-attempt-row__result strong {
    overflow-wrap: anywhere;
}

.quiz-attempt-row__identity span:not(.quiz-attempt-row__number),
.quiz-attempt-row__result > span {
    color: var(--text-muted);
    font-size: 12px;
}

.quiz-history-pagination {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
}

.quiz-history-pagination > :last-child {
    justify-self: end;
}

.quiz-history-pagination > span:not([aria-hidden]) {
    color: var(--text-muted);
    font-size: 13px;
    text-align: center;
}

.quiz-history-empty {
    padding: 26px;
    border: 1px dashed var(--border-soft);
    border-radius: 16px;
    background: var(--bg-surface-soft);
    text-align: center;
}

.quiz-history-empty strong {
    color: var(--text-main);
}

.quiz-history-empty p {
    margin: 6px 0 0;
    color: var(--text-muted);
}

.quiz-result-hero__header p {
    font-size: 13px;
}

.quiz-result-summary-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 20px;
}

.quiz-result-stat {
    padding: 17px 18px;
    border: 1px solid var(--border-soft);
    background: var(--bg-surface-soft);
    box-shadow: none;
}

.quiz-result-stat dd {
    font-size: clamp(20px, 2vw, 28px);
}

.quiz-result-banner {
    margin-top: 18px;
    line-height: 1.55;
}

.quiz-result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

.quiz-section-header {
    min-width: 0;
}

.quiz-review-list {
    gap: 16px;
}

.quiz-review-card {
    padding: 20px;
    overflow: hidden;
}

.quiz-review-card__header {
    align-items: flex-start;
    margin-bottom: 16px;
}

.quiz-review-card__identity,
.quiz-review-card__badges {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.quiz-review-card__identity h4 {
    margin: 0;
}

.quiz-review-card__badges {
    justify-content: flex-end;
    flex-wrap: wrap;
}

.quiz-review-card__question {
    max-width: none;
    margin: 0;
    padding: 15px 16px;
    border: 1px solid var(--border-soft);
    border-radius: 14px;
    background: var(--bg-surface-soft);
}

.quiz-answer-summary {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 12px;
}

.quiz-answer-summary__wide {
    grid-column: 1 / -1;
}

.quiz-answer-summary dd {
    font-size: 14px;
}

.quiz-explanation__title {
    display: block;
    margin-bottom: 8px;
    color: inherit;
    font-size: 14px;
}

.quiz-explanation .formatted-content {
    max-width: none;
}

@media (max-width: 1200px) {
    .quiz-catalog-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .quiz-catalog-filters__grid,
    .quiz-detail-meta,
    .quiz-result-summary-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .quiz-attempt-row {
        grid-template-columns: minmax(190px, 1fr) minmax(160px, 0.65fr) auto;
    }
}

@media (max-width: 768px) {
    .quiz-catalog-page,
    .quiz-detail-page,
    .quiz-result-page {
        gap: 16px;
    }

    .quiz-catalog-card,
    .quiz-review-card {
        padding: 18px;
    }

    .quiz-catalog-card__description {
        min-height: 0;
    }

    .quiz-detail-hero__header,
    .quiz-result-hero__header,
    .quiz-history-panel__header,
    .quiz-review-panel__header,
    .quiz-section-header,
    .quiz-detail-actionbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .quiz-detail-actionbar .btn,
    .quiz-detail-actionbar form {
        width: 100%;
    }

    .quiz-detail-actionbar .btn {
        justify-content: center;
    }

    .quiz-attempt-row {
        grid-template-columns: minmax(0, 1fr) auto;
    }

    .quiz-attempt-row__result {
        grid-column: 1;
        padding-left: 48px;
    }

    .quiz-attempt-row > .btn {
        grid-column: 2;
        grid-row: 1 / span 2;
    }

    .quiz-review-card__header {
        gap: 12px;
        flex-direction: column;
    }

    .quiz-review-card__badges {
        justify-content: flex-start;
    }
}

@media (max-width: 480px) {
    .quiz-page-breadcrumbs span[aria-current="page"] {
        flex-basis: 100%;
    }

    .quiz-catalog-filters__grid,
    .quiz-detail-meta,
    .quiz-result-summary-grid,
    .quiz-answer-summary {
        grid-template-columns: 1fr;
    }

    .quiz-detail-meta__wide,
    .quiz-answer-summary__wide {
        grid-column: auto;
    }

    .quiz-catalog-card__header,
    .quiz-catalog-card__footer {
        align-items: flex-start;
        flex-direction: column;
    }

    .quiz-catalog-card__footer .btn,
    .quiz-catalog-filters__actions .btn,
    .quiz-result-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .quiz-catalog-filters__actions,
    .quiz-result-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .quiz-attempt-row {
        grid-template-columns: 1fr;
    }

    .quiz-attempt-row__result {
        grid-column: auto;
        padding-left: 48px;
    }

    .quiz-attempt-row > .btn {
        grid-column: auto;
        grid-row: auto;
        width: 100%;
        justify-content: center;
    }

    .quiz-history-pagination {
        grid-template-columns: 1fr 1fr;
    }

    .quiz-history-pagination > span:not([aria-hidden]) {
        grid-column: 1 / -1;
        grid-row: 1;
    }

    .quiz-history-pagination > :last-child {
        justify-self: stretch;
    }

    .quiz-history-pagination .btn {
        justify-content: center;
    }

    .quiz-result-hero__header .status-badge {
        align-self: flex-start;
    }
}

@media (max-width: 420px) {
    .quiz-catalog-card__meta {
        grid-template-columns: 1fr;
    }

    .quiz-catalog-card,
    .quiz-review-card {
        border-radius: 18px;
        padding: 16px;
    }

    .quiz-catalog-card__title {
        font-size: 18px;
    }
}