.vytka-content {
    --vytka-main: #274080;
    --vytka-soft: #ecf2f8;
    --vytka-border: #d8e2ef;
}

.vytka-summary {
    display: flex;
    gap: 12px;
    margin: 1.2rem 0 1.8rem;
    flex-wrap: wrap;
}

.vytka-summary-item {
    min-width: 140px;
    padding: 12px 16px;
    border: 1px solid var(--vytka-border);
    border-radius: 12px;
    background: #fff;
    display: flex;
    flex-direction: column;
}

.vytka-summary-value {
    color: var(--vytka-main);
    font-size: 1.4rem;
    line-height: 1;
    font-weight: 700;
}

.vytka-summary-label {
    margin-top: 6px;
    color: #5f6674;
    font-size: 0.9rem;
}

.vytka-sections {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.vytka-section {
    border: 1px solid var(--vytka-border);
    border-radius: 14px;
    background: #fff;
    overflow: hidden;
}

.vytka-section-title {
    cursor: pointer;
    list-style: none;
    padding: 16px 18px;
    color: var(--vytka-main);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: #fff;
}

.vytka-section-title::-webkit-details-marker {
    display: none;
}

.vytka-section-title::after {
    content: '\f078';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    font-size: 0.75rem;
    color: #67738a;
    transition: transform 0.2s ease;
}

.vytka-section[open] .vytka-section-title {
    background: var(--vytka-soft);
}

.vytka-section[open] .vytka-section-title::after {
    transform: rotate(-180deg);
}

.vytka-section-count {
    color: #67738a;
    font-size: 0.88rem;
    font-weight: 500;
    margin-left: auto;
    margin-right: 10px;
}

.vytka-lessons {
    padding: 10px 14px 14px;
    background: var(--vytka-soft);
    display: grid;
    gap: 12px;
}

.vytka-lesson {
    background: #fff;
    border: 1px solid var(--vytka-border);
    border-radius: 12px;
    overflow: hidden;
}

.vytka-lesson-summary {
    list-style: none;
    cursor: pointer;
    padding: 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

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

.vytka-lesson-summary::after {
    content: '\f078';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    font-size: 0.75rem;
    color: #67738a;
    transition: transform 0.2s ease;
    margin-left: auto;
    flex: 0 0 auto;
}

.vytka-lesson[open] .vytka-lesson-summary {
    border-bottom: 1px solid var(--vytka-border);
    background: #fbfdff;
}

.vytka-lesson[open] .vytka-lesson-summary::after {
    transform: rotate(-180deg);
}

.vytka-lesson-header {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px;
    align-items: start;
    flex: 1;
}

.vytka-lesson-body {
    padding: 12px 14px 14px;
}

.vytka-lesson-meta {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--vytka-border);
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 0.78rem;
    color: #667386;
    white-space: nowrap;
}

.vytka-lesson-number {
    min-width: 48px;
    text-align: center;
    background: var(--vytka-soft);
    color: var(--vytka-main);
    font-weight: 700;
    border-radius: 8px;
    padding: 6px 8px;
    line-height: 1.2;
}

.vytka-lesson-title-item {
    margin: 0;
    color: #1f2b48;
    font-size: 1rem;
    line-height: 1.35;
    font-weight: 600;
}

.vytka-lesson-authors,
.vytka-materials-block {
    margin-top: 12px;
}

.vytka-lesson-label {
    color: #67738a;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 6px;
}

.vytka-lesson-authors-text {
    line-height: 1.45;
}

.vytka-materials-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 8px;
}

.vytka-material-item {
    border: 1px solid #e1e8f2;
    border-radius: 10px;
    background: #fff;
    padding: 10px 12px;
}

.vytka-material-main {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.vytka-material-content {
    min-width: 0;
    flex: 1;
}

.vytka-material-top {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    flex-wrap: wrap;
}

.vytka-material-icon {
    color: var(--vytka-main);
    margin-top: 3px;
    width: 16px;
    text-align: center;
    flex: 0 0 16px;
}

.vytka-material-link {
    color: var(--vytka-main);
    font-weight: 500;
    line-height: 1.35;
}

.vytka-material-link:hover {
    text-decoration: underline;
}

.vytka-material-type {
    font-size: 0.72rem;
    font-weight: 600;
    color: #5b6981;
    border: 1px solid #d8e2ef;
    background: #f7f9fc;
    border-radius: 999px;
    padding: 2px 8px;
    line-height: 1.2;
}

.vytka-material-meta {
    color: #67738a;
    font-size: 0.86em;
    margin-top: 4px;
}

@media (max-width: 768px) {
    .vytka-summary-item {
        min-width: 120px;
    }

    .vytka-section-title {
        flex-wrap: wrap;
        padding: 14px;
    }

    .vytka-section-count {
        margin-left: 0;
        margin-right: 0;
    }

    .vytka-lessons {
        padding: 8px;
    }

    .vytka-lesson {
        border-radius: 10px;
    }

    .vytka-lesson-summary {
        padding: 12px;
        align-items: flex-start;
        flex-wrap: wrap;
    }

    .vytka-lesson-body {
        padding: 10px 12px 12px;
    }

    .vytka-material-item {
        padding: 9px 10px;
    }
}