@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --school-bg: #FFFFFF;
    --school-bg-muted: #F7F8FA;
    --school-text: #1A1A1A;
    --school-text-secondary: #5A5F66;
    --school-border: rgba(0, 0, 0, 0.08);
    --school-accent: #FF6B00;
    --school-accent-hover: #FF7A29;
    --school-danger: #E63327;
    --school-success: #22A06B;
    --school-warning: #F5A623;
    --school-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    --school-shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.1);
    --school-radius: 18px;
    --school-radius-sm: 12px;
    --school-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --school-transition: 0.2s ease;
}

/* Dark theme (optional toggle) */
.school-body.is-dark {
    --school-bg: #1A1A1A;
    --school-bg-muted: #242424;
    --school-text: #F5F5F5;
    --school-text-secondary: #A0A5AB;
    --school-border: rgba(255, 255, 255, 0.1);
    --school-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --school-shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.school-body {
    background: var(--school-bg-muted);
    color: var(--school-text);
    min-height: 100vh;
    font-family: var(--school-font);
    -webkit-font-smoothing: antialiased;
}

.school-main { min-height: calc(100vh - 56px); }

/* ── Subnav ── */
.school-subnav {
    background: var(--school-bg);
    border-bottom: 1px solid var(--school-border);
    padding: 0.75rem 0;
}

.school-subnav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.school-subnav__list {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    list-style: none;
    margin: 0;
    padding: 0.25rem;
    background: var(--school-bg-muted);
    border-radius: 999px;
    overflow-x: auto;
}

.school-subnav__item {
    flex-shrink: 0;
}

.school-subnav__link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--school-text-secondary);
    text-decoration: none;
    padding: 0.55rem 1rem;
    border-radius: 999px;
    white-space: nowrap;
    font-size: 0.875rem;
    font-weight: 600;
    transition: color var(--school-transition), background var(--school-transition), box-shadow var(--school-transition);
}

.school-subnav__link i {
    font-size: 1rem;
    opacity: 0.8;
}

.school-subnav__link:hover {
    color: var(--school-text);
    background: rgba(255, 255, 255, 0.7);
}

.school-subnav__link.is-active {
    background: #fff;
    color: var(--school-accent);
    box-shadow: 0 2px 12px rgba(255, 107, 0, 0.12);
}

.school-subnav__link.is-active i {
    opacity: 1;
}

.school-subnav__auth {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--school-border);
    color: var(--school-text);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
    transition: border-color var(--school-transition), color var(--school-transition);
}

.school-subnav__auth:hover {
    border-color: var(--school-accent);
    color: var(--school-accent);
}

.school-subnav__spacer { flex: 1; }

/* ── Typography ── */
.school-page-title {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 700;
    color: var(--school-text);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.school-page-subtitle {
    font-size: 1.0625rem;
    color: var(--school-text-secondary);
    line-height: 1.6;
    max-width: 640px;
}

.school-section-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--school-text);
    margin-bottom: 0.375rem;
}

.school-section-desc {
    font-size: 0.9375rem;
    color: var(--school-text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.5;
}

.school-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--school-accent);
    background: rgba(255, 107, 0, 0.08);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
}

.text-muted { color: var(--school-text-secondary) !important; }

/* ── Catalog filters ── */
.school-catalog-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    padding: 1rem 1.25rem;
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
}

.school-catalog-filters__search {
    flex: 1 1 200px;
    position: relative;
}

.school-catalog-filters__search input {
    width: 100%;
    padding: 0.625rem 1rem 0.625rem 2.5rem;
    border: 1px solid var(--school-border);
    border-radius: var(--school-radius-sm);
    font-size: 0.9375rem;
    background: var(--school-bg-muted);
    color: var(--school-text);
    transition: border-color var(--school-transition);
}

.school-catalog-filters__search input:focus {
    outline: none;
    border-color: var(--school-accent);
    background: var(--school-bg);
}

.school-catalog-filters__search i {
    position: absolute;
    left: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--school-text-secondary);
}

.school-catalog-filters select {
    padding: 0.625rem 2rem 0.625rem 0.875rem;
    border: 1px solid var(--school-border);
    border-radius: var(--school-radius-sm);
    font-size: 0.875rem;
    background: var(--school-bg-muted);
    color: var(--school-text);
    cursor: pointer;
}

/* ── Learning track ── */
.school-learning-track {
    display: flex;
    align-items: center;
    gap: 0;
    margin-bottom: 2rem;
    padding: 1.25rem 1.5rem;
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
    overflow-x: auto;
}

.school-learning-track__step {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    min-width: 100px;
    position: relative;
    text-decoration: none;
    color: var(--school-text-secondary);
    transition: color var(--school-transition);
}

.school-learning-track__step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 18px;
    left: calc(50% + 20px);
    width: calc(100% - 40px);
    height: 2px;
    background: var(--school-border);
}

.school-learning-track__step.is-completed:not(:last-child)::after,
.school-learning-track__step.is-current:not(:last-child)::after {
    background: var(--school-accent);
}

.school-learning-track__dot {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--school-bg-muted);
    border: 2px solid var(--school-border);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    z-index: 1;
    transition: all var(--school-transition);
}

.school-learning-track__step.is-completed .school-learning-track__dot {
    background: var(--school-accent);
    border-color: var(--school-accent);
    color: #fff;
}

.school-learning-track__step.is-current .school-learning-track__dot {
    border-color: var(--school-accent);
    color: var(--school-accent);
    box-shadow: 0 0 0 4px rgba(255, 107, 0, 0.15);
}

.school-learning-track__step.is-active-filter .school-learning-track__dot {
    border-color: var(--school-accent);
    color: var(--school-accent);
}

.school-learning-track__label {
    font-size: 0.8125rem;
    font-weight: 500;
    text-align: center;
}

/* ── Level section ── */
.school-level-section {
    margin-bottom: 2.5rem;
}

.school-courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

@media (max-width: 991px) {
    .school-courses-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 575px) {
    .school-courses-grid { grid-template-columns: 1fr; }
}

/* ── Course card ── */
.school-course-card {
    display: flex;
    flex-direction: column;
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
    overflow: hidden;
    transition: transform var(--school-transition), box-shadow var(--school-transition);
    height: 100%;
}

.school-course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--school-shadow-hover);
}

.school-course-card--locked {
    opacity: 0.65;
}

.school-course-card--locked:hover {
    transform: none;
    box-shadow: var(--school-shadow);
}

.school-course-card__cover {
    position: relative;
    height: 160px;
    background: linear-gradient(135deg, #FF6B00 0%, #FF9A56 50%, #FFB347 100%);
    overflow: hidden;
}

.school-course-card__cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.school-course-card__cover--1 { background: linear-gradient(135deg, #FF6B00, #FF9A56); }
.school-course-card__cover--2 { background: linear-gradient(135deg, #E63327, #FF6B6B); }
.school-course-card__cover--3 { background: linear-gradient(135deg, #6B5CE7, #A78BFA); }
.school-course-card__cover--4 { background: linear-gradient(135deg, #22A06B, #6EE7B7); }

.school-course-card__status {
    position: absolute;
    top: 12px;
    left: 12px;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.3rem 0.65rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--school-text);
    backdrop-filter: blur(4px);
}

.school-course-card__status--in_progress { color: var(--school-accent); }
.school-course-card__status--completed { color: var(--school-success); }
.school-course-card__status--exam_available { color: var(--school-warning); }
.school-course-card__status--coming_soon { color: var(--school-danger); }
.school-course-card__status--new { color: #6B5CE7; }

.school-course-card__body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 1.25rem 1.5rem 1.5rem;
}

.school-course-card__title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--school-text);
    margin-bottom: 0.5rem;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.school-course-card__desc {
    font-size: 0.875rem;
    color: var(--school-text-secondary);
    line-height: 1.5;
    margin-bottom: 0.875rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.school-course-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.8125rem;
    color: var(--school-text-secondary);
    margin-bottom: 0.75rem;
}

.school-course-card__meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.school-course-card__rating {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8125rem;
    margin-bottom: 0.75rem;
}

.school-course-card__stars {
    color: #F5A623;
    letter-spacing: -1px;
}

.school-course-card__progress {
    margin-bottom: 1rem;
}

.school-course-card__progress-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--school-text-secondary);
    margin-bottom: 0.35rem;
}

.school-course-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
}

.school-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.625rem 1.25rem;
    border-radius: var(--school-radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background var(--school-transition), transform var(--school-transition);
}

.school-btn--primary {
    background: var(--school-accent);
    color: #fff;
}

.school-btn--primary:hover {
    background: var(--school-accent-hover);
    color: #fff;
    transform: translateY(-1px);
}

.school-btn--ghost {
    background: transparent;
    color: var(--school-text-secondary);
    border: 1px solid var(--school-border);
}

.school-btn--ghost:hover {
    border-color: var(--school-accent);
    color: var(--school-accent);
}

.school-btn--sm { padding: 0.45rem 0.875rem; font-size: 0.8125rem; }

/* ── Progress bar ── */
.school-progress-bar {
    height: 6px;
    background: var(--school-bg-muted);
    border-radius: 999px;
    overflow: hidden;
}

.school-progress-bar__fill {
    height: 100%;
    background: linear-gradient(90deg, var(--school-accent), var(--school-accent-hover));
    border-radius: 999px;
    transition: width 0.4s ease;
}

/* ── Stat cards ── */
.school-stat-card,
.school-level-card,
.school-review,
.school-progress-card,
.school-current-course {
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
    padding: 1.5rem;
}

.school-stat-card__label {
    display: block;
    font-size: 0.8125rem;
    color: var(--school-text-secondary);
    margin-bottom: 0.25rem;
}

.school-stat-card strong {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--school-text);
}

.school-stat-card small {
    display: block;
    margin-top: 0.25rem;
    color: var(--school-text-secondary);
    font-size: 0.8125rem;
}

/* ── Lesson ── */
.school-lesson__layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 1.5rem;
    align-items: start;
}

@media (max-width: 991px) {
    .school-lesson__layout { grid-template-columns: 1fr; }
}

.school-lesson-sidebar {
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
    padding: 1.25rem;
    position: sticky;
    top: 80px;
}

.school-lesson-sidebar__title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--school-text);
}

.school-lesson-sidebar__item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--school-radius-sm);
    font-size: 0.875rem;
    color: var(--school-text-secondary);
    text-decoration: none;
    transition: background var(--school-transition);
}

.school-lesson-sidebar__item:hover {
    background: var(--school-bg-muted);
    color: var(--school-text);
}

.school-lesson-sidebar__item.is-active {
    background: rgba(255, 107, 0, 0.08);
    color: var(--school-accent);
    font-weight: 500;
}

.school-lesson-sidebar__item.is-done i { color: var(--school-success); }

.school-lesson__content {
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
    padding: 2rem;
    line-height: 1.75;
    font-size: 1rem;
    color: var(--school-text);
}

.school-lesson__content h2,
.school-lesson__content h3 {
    color: var(--school-text);
    margin-top: 1.5rem;
}

.school-lesson__content img {
    max-width: 100%;
    border-radius: var(--school-radius-sm);
    margin: 1rem 0;
}

.school-breadcrumb {
    font-size: 0.875rem;
    color: var(--school-text-secondary);
}

.school-breadcrumb a {
    color: var(--school-accent);
    text-decoration: none;
}

.school-part-progress {
    margin-bottom: 0.75rem;
}

.school-part-progress__label {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--school-text);
    margin-bottom: 0.4rem;
}

.school-part-progress__label span {
    font-weight: 500;
    color: var(--school-text-secondary);
}

.school-part-progress__bar {
    height: 6px;
    border-radius: 999px;
    background: rgba(17, 24, 39, 0.08);
    overflow: hidden;
}

.school-part-progress__fill {
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, #FF6B00, #FF8A3D);
    transition: width 0.25s ease;
}

.school-part-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.school-part-tabs__item {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    max-width: 100%;
    padding: 0.45rem 0.8rem;
    border-radius: 999px;
    border: 1px solid var(--school-border);
    color: var(--school-text-secondary);
    text-decoration: none;
    font-size: 0.8125rem;
    transition: all var(--school-transition);
    background: #fff;
}

.school-part-tabs__item:hover {
    border-color: rgba(255, 107, 0, 0.45);
    color: var(--school-accent);
    text-decoration: none;
}

.school-part-tabs__item.is-active {
    border-color: var(--school-accent);
    color: var(--school-accent);
    background: rgba(255, 107, 0, 0.06);
}

.school-part-tabs__num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.35rem;
    height: 1.35rem;
    border-radius: 999px;
    background: rgba(17, 24, 39, 0.06);
    font-weight: 700;
    font-size: 0.75rem;
}

.school-part-tabs__item.is-active .school-part-tabs__num {
    background: var(--school-accent);
    color: #fff;
}

.school-part-tabs__title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 180px;
}

.school-part-pager {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    padding-top: 1rem;
    border-top: 1px solid var(--school-border);
}

/* Guest gate banner */
.school-guest-gate {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, rgba(255, 107, 0, 0.08), rgba(255, 122, 41, 0.04));
    border: 1px solid rgba(255, 107, 0, 0.2);
    border-radius: var(--school-radius);
}

.school-guest-gate__icon {
    font-size: 1.5rem;
    color: var(--school-accent);
    flex-shrink: 0;
}

.school-guest-gate__text {
    flex: 1;
    font-size: 0.9375rem;
    color: var(--school-text);
    line-height: 1.5;
}

.school-guest-gate__text strong { display: block; margin-bottom: 0.15rem; }

/* ── Quiz ── */
.school-quiz__question {
    margin-bottom: 1.25rem;
    padding: 1.25rem;
    background: var(--school-bg);
    border: 1px solid var(--school-border);
    border-radius: var(--school-radius-sm);
    transition: border-color var(--school-transition), box-shadow var(--school-transition);
}

.school-quiz__question.is-correct {
    border-color: rgba(34, 160, 107, 0.4);
    box-shadow: 0 0 0 3px rgba(34, 160, 107, 0.08);
}

.school-quiz__question.is-wrong {
    border-color: rgba(230, 51, 39, 0.35);
    box-shadow: 0 0 0 3px rgba(230, 51, 39, 0.06);
}

.school-quiz__legend {
    font-size: 1rem;
    font-weight: 600;
    color: var(--school-text);
    margin-bottom: 0.875rem;
    display: flex;
    gap: 0.625rem;
    align-items: flex-start;
}

.school-quiz__number {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--school-bg-muted);
    border-radius: 8px;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--school-accent);
}

.school-quiz__answers {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.school-quiz__answer {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    margin: 0;
    padding: 0.75rem 0.875rem;
    border-radius: 10px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background var(--school-transition), border-color var(--school-transition);
}

.school-quiz__answer:hover {
    background: var(--school-bg-muted);
}

.school-quiz__answer input {
    margin-top: 0.2rem;
    flex-shrink: 0;
    accent-color: var(--school-accent);
}

.school-quiz__answer-text {
    line-height: 1.5;
    color: var(--school-text);
}

.school-quiz__answer.is-correct-answer {
    background: rgba(34, 160, 107, 0.1);
    border-color: rgba(34, 160, 107, 0.35);
}

.school-quiz__answer.is-wrong-answer {
    background: rgba(230, 51, 39, 0.08);
    border-color: rgba(230, 51, 39, 0.35);
}

.school-quiz__feedback {
    margin-top: 0.875rem;
    padding: 0.875rem 1rem;
    border-radius: 10px;
    font-size: 0.9375rem;
    line-height: 1.5;
}

.school-quiz__feedback--ok {
    background: rgba(34, 160, 107, 0.1);
    color: var(--school-success);
    font-weight: 600;
}

.school-quiz__feedback--fail {
    background: rgba(230, 51, 39, 0.06);
    color: var(--school-text);
}

.school-quiz__feedback-title {
    font-weight: 600;
    color: var(--school-danger);
    margin-bottom: 0.5rem;
}

.school-quiz__feedback-wrong {
    margin-bottom: 0.35rem;
    color: var(--school-text-secondary);
}

.school-quiz__feedback-correct {
    margin-bottom: 0.5rem;
    color: var(--school-text);
}

.school-quiz__feedback-explain {
    padding-top: 0.5rem;
    border-top: 1px solid var(--school-border);
    color: var(--school-text-secondary);
    font-size: 0.875rem;
}

.school-quiz__feedback-explain span {
    font-weight: 600;
    color: var(--school-text);
}

.school-quiz__summary {
    margin-top: 2rem;
    padding: 2rem;
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
    text-align: center;
}

.school-quiz__summary--pass {
    border-top: 4px solid var(--school-success);
}

.school-quiz__summary--fail {
    border-top: 4px solid var(--school-warning);
}

.school-quiz__summary--error {
    border-top: 4px solid var(--school-danger);
    color: var(--school-danger);
}

.school-quiz__summary-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.school-quiz__summary--pass .school-quiz__summary-icon {
    color: var(--school-success);
}

.school-quiz__summary--fail .school-quiz__summary-icon {
    color: var(--school-warning);
}

.school-quiz__summary h2 {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.school-quiz__summary p {
    color: var(--school-text-secondary);
    margin-bottom: 0.5rem;
}

.school-quiz__summary-hint {
    font-size: 0.875rem;
}

.school-quiz__summary-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1.25rem;
}

.school-quiz__actions {
    margin-top: 1.5rem;
}

/* ── Achievements ── */
.school-achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
}

.school-achievement-card {
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
    padding: 1.25rem;
    text-align: center;
    transition: transform var(--school-transition);
}

.school-achievement-card:hover { transform: translateY(-2px); }

.school-achievement-card.is-secret {
    opacity: 0.7;
    filter: grayscale(0.5);
}

.school-achievement-card__icon {
    font-size: 2.25rem;
    color: var(--school-accent);
    display: block;
    margin-bottom: 0.75rem;
}

.school-achievement-card.is-secret .school-achievement-card__icon {
    color: var(--school-text-secondary);
}

.school-achievement-card h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.school-achievement-card p {
    font-size: 0.8125rem;
    color: var(--school-text-secondary);
    margin-bottom: 0.5rem;
}

.school-achievement-card small {
    font-size: 0.75rem;
    color: var(--school-text-secondary);
}

/* ── Leaderboard ── */
.school-leaderboard-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.school-period-tabs {
    display: flex;
    gap: 0.25rem;
    background: var(--school-bg);
    padding: 0.25rem;
    border-radius: 999px;
    box-shadow: var(--school-shadow);
}

.school-period-tabs a {
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--school-text-secondary);
    text-decoration: none;
    transition: all var(--school-transition);
}

.school-period-tabs a.is-active {
    background: var(--school-accent);
    color: #fff;
}

.school-leaderboard-card {
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
    overflow: hidden;
}

.school-leaderboard-row {
    display: grid;
    grid-template-columns: 48px 1fr 80px 80px 80px;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--school-border);
    transition: background var(--school-transition);
}

.school-leaderboard-row:last-child { border-bottom: none; }

.school-leaderboard-row.is-me {
    background: rgba(255, 107, 0, 0.06);
}

.school-leaderboard-row__rank {
    font-weight: 700;
    font-size: 1rem;
    color: var(--school-text-secondary);
    text-align: center;
}

.school-leaderboard-row__rank--top {
    color: var(--school-accent);
    font-size: 1.125rem;
}

.school-leaderboard-row__user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.school-leaderboard-row__avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--school-bg-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--school-accent);
    overflow: hidden;
}

.school-leaderboard-row__avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.school-leaderboard-row__name {
    font-weight: 500;
    color: var(--school-text);
}

.school-leaderboard-row__level {
    font-size: 0.75rem;
    color: var(--school-text-secondary);
}

.school-leaderboard-row__stat {
    text-align: center;
    font-weight: 600;
    color: var(--school-text);
}

.school-leaderboard-row__stat-label {
    display: none;
}

.school-my-rank-banner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
    border-left: 4px solid var(--school-accent);
}

@media (max-width: 767px) {
    .school-leaderboard-row {
        grid-template-columns: 36px 1fr auto;
        gap: 0.5rem;
    }
    .school-leaderboard-row__stat--hide-mobile { display: none; }
}

/* ── Profile card (leaderboard sidebar) ── */
.school-profile-card {
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
    padding: 1.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.school-profile-card__level {
    font-size: 0.8125rem;
    color: var(--school-accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.school-profile-card__xp {
    font-size: 2rem;
    font-weight: 700;
    margin: 0.5rem 0;
}

/* ── Toast notifications ── */
.school-toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    pointer-events: none;
}

.school-toast {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--school-bg);
    border-radius: var(--school-radius-sm);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    max-width: 360px;
    pointer-events: auto;
    animation: school-toast-in 0.4s ease;
}

@keyframes school-toast-in {
    from { opacity: 0; transform: translateY(16px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.school-toast.is-hiding {
    animation: school-toast-out 0.3s ease forwards;
}

@keyframes school-toast-out {
    to { opacity: 0; transform: translateY(8px); }
}

.school-toast__icon {
    font-size: 1.75rem;
    color: var(--school-accent);
    flex-shrink: 0;
}

.school-toast__title {
    font-weight: 600;
    font-size: 0.9375rem;
    margin-bottom: 0.15rem;
}

.school-toast__desc {
    font-size: 0.8125rem;
    color: var(--school-text-secondary);
}

/* ── Exam ── */
.school-exam__timer { font-weight: 700; color: var(--school-accent); }
.school-exam-result__icon { font-size: 3rem; color: var(--school-danger); }
.school-exam-result__icon.is-pass { color: var(--school-success); }
.school-exam-result__score { font-size: 2rem; font-weight: 700; }
.school-certificate {
    margin: 1rem auto;
    max-width: 420px;
    padding: 1.5rem;
    border: 2px dashed var(--school-accent);
    border-radius: var(--school-radius);
    background: var(--school-bg);
}

/* ── Landing ── */
.school-landing__hero { max-width: 720px; margin: 0 auto; }
.school-landing__cta { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; margin-top: 1.5rem; }
.school-level-card__count {
    display: inline-block;
    margin-top: 0.75rem;
    font-size: 0.8125rem;
    color: var(--school-accent);
    font-weight: 600;
}

/* ── Course page ── */
.school-course-hero {
    background: var(--school-bg);
    border-radius: var(--school-radius);
    box-shadow: var(--school-shadow);
    overflow: hidden;
    margin-bottom: 2rem;
}

.school-course-hero__cover {
    height: 240px;
    background: linear-gradient(135deg, #FF6B00, #FF9A56);
}

.school-course-hero__cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.school-course-hero__body { padding: 2rem; }

.school-course-hero__outcomes {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
}

.school-course-hero__outcomes li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.35rem 0;
    font-size: 0.9375rem;
    color: var(--school-text-secondary);
}

.school-course-hero__outcomes li i {
    color: var(--school-success);
    margin-top: 0.15rem;
}

/* ── Empty state ── */
.school-empty {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--school-text-secondary);
}

.school-empty i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    opacity: 0.4;
}

/* ── Animations ── */
.school-fade-in {
    animation: school-fade-in 0.4s ease;
}

@keyframes school-fade-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.school-catalog-page { padding: 2rem 0 3rem; }