/* Тёмная тема по референсу */
:root {
    --bg: #1a1a1e;
    --bg-card: #25252b;
    --text: #e8e8e8;
    --text-muted: #9ca3af;
    --accent: #22c55e;
    --accent-hover: #16a34a;
    --border: #374151;
    --danger: #ef4444;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

/* Шапка */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.header-link {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
    text-decoration: none;
}

.header-link:hover {
    color: var(--accent);
}

.header-link--active {
    color: var(--accent);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Профиль — выпадающее меню */
.profile-dropdown {
    position: relative;
}

.profile-trigger {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.5rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
    font-size: 0.9rem;
}

.profile-trigger:hover {
    background: rgba(255,255,255,0.05);
}

.profile-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--border);
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-placeholder {
    font-size: 1rem;
}

.profile-chevron {
    font-size: 0.6rem;
    opacity: 0.8;
}

.profile-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    min-width: 160px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem 0;
    z-index: 100;
}

.profile-menu[hidden] {
    display: none;
}

.profile-menu a {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
}

.profile-menu a:hover {
    background: rgba(255,255,255,0.06);
}

/* Основная область */
.main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* Три блока метрик */
.metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    position: relative;
    min-height: 100px;
}

.metric-card .label {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.metric-card .value {
    font-size: 2rem;
    font-weight: 700;
}

.metric-card .icon {
    position: absolute;
    right: 1rem;
    bottom: 1rem;
    font-size: 1.5rem;
}

.metric-card.rating .icon { color: var(--accent); }
.metric-card.first-blood .icon { color: var(--danger); }
.metric-card.completed .icon { color: #3b82f6; }

/* Таблица ТОП-100 */
.top-section h1 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.top-table-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.top-table {
    width: 100%;
    border-collapse: collapse;
}

.top-table th,
.top-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.top-table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.85rem;
}

.top-table tr:last-child td {
    border-bottom: none;
}

.top-table tbody tr:hover {
    background: rgba(255,255,255,0.03);
}

.top-table .num { width: 4rem; }
.top-table .user-cell { display: flex; align-items: center; gap: 0.5rem; }
.top-table .user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--border);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}
.top-table .user-avatar img { width: 100%; height: 100%; object-fit: cover; }

/* Пагинация */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.pagination a,
.pagination span {
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
}

.pagination a:hover {
    background: var(--bg-card);
}

.pagination .current {
    background: var(--accent);
    color: #fff;
}

/* Страница выбора трека */
.track-select-page {
    padding: 2rem 0;
}

.track-select-page h1 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.tracks-carousel-wrap {
    overflow: hidden;
    margin: 0 -1.5rem;
    padding: 0 1.5rem;
}

.tracks-grid {
    display: flex;
    flex-wrap: nowrap;
    gap: 1.5rem;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.75rem;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.tracks-grid::-webkit-scrollbar {
    height: 6px;
}

.tracks-grid::-webkit-scrollbar-track {
    background: transparent;
}

.tracks-grid::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.track-card {
    flex: 0 0 auto;
    width: 320px;
    min-width: 320px;
    max-width: 320px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    scroll-snap-align: start;
    position: relative;
}

.track-card--in-dev {
    opacity: 0.6;
    pointer-events: none;
}

.track-card-in-dev-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    z-index: 2;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(0, 0, 0, 0.75);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.track-card-image {
    height: 140px;
    background: var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.track-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.track-card-body {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.track-card-top {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.track-card-desc {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.4;
}

.track-card-footer {
    margin-top: auto;
    flex-shrink: 0;
    padding-top: 1rem;
}

.track-difficulty {
    display: inline-block;
    width: fit-content;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
    align-self: flex-start;
}

.track-difficulty.easy { background: rgba(34, 197, 94, 0.2); color: var(--accent); }
.track-difficulty.medium { background: rgba(249, 115, 22, 0.2); color: #f97316; }
.track-difficulty.hard { background: rgba(239, 68, 68, 0.2); color: var(--danger); }

.track-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.track-card-desc {
    margin-bottom: 0;
}

.track-progress {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.track-progress-bar {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.track-progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
}

.track-actions {
    display: flex;
    gap: 0.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    border: none;
    transition: background 0.2s;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    background: var(--border);
    color: var(--text);
}

.btn-secondary:hover {
    background: #4b5563;
}

/* --- Страница курса (уроки) --- */
.course-page {
    display: flex;
    flex-direction: column;
    height: 100vh;
    min-height: 100vh;
    overflow: hidden;
}

.course-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    flex-shrink: 0;
}

.course-header-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.course-back {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    white-space: nowrap;
}

.course-back:hover {
    color: var(--accent);
}

.course-header-center {
    text-align: center;
    flex: 1;
}

.course-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 0.15rem 0;
}

.course-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.course-header-right {
    min-width: 80px;
}

.course-body {
    position: relative;
    flex: 1;
    min-height: 0;
    display: flex;
    overflow: hidden;
}

.course-layout {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.course-sidebar {
    width: 280px;
    flex-shrink: 0;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
}

.course-progress-block {
    margin-bottom: 1rem;
    flex-shrink: 0;
}

.course-lessons {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
}

.course-progress-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.course-progress-text {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.course-progress-bar {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}

.course-progress-bar .course-progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.2s;
}

.course-lessons-section {
    margin-bottom: 1rem;
}

.course-lessons-section-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 0.5rem;
}

.course-lessons-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.course-lessons-list li {
    margin: 0;
}

.course-lesson-link {
    display: flex;
    align-items: flex-start;
    gap: 0.35rem;
    padding: 0.4rem 0;
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
    line-height: 1.3;
    border-radius: 4px;
}

.course-lesson-link:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent);
}

.course-lesson-link--active {
    color: var(--accent);
}

.course-lesson-link--blocked {
    opacity: 0.45;
    color: var(--text-muted);
    cursor: default;
    pointer-events: none;
}

.course-lesson-link--blocked:hover {
    background: transparent;
    color: var(--text-muted);
}

.course-lesson-num {
    flex-shrink: 0;
}

.course-main {
    flex: 1;
    min-height: 0;
    overflow: auto;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
}

.course-content {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: visible;
    width: 100%;
    max-width: 768px;
    margin-left: auto;
    margin-right: auto;
}

/* Карусель слайдов справа: плавающий overlay, вертикальный список превью */
.course-slides--overlay {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 140px;
    background: rgba(37, 37, 42, 0.55);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(12px);
    border-left: 1px solid rgba(255, 255, 255, 0.06);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    min-height: 0;
    z-index: 10;
    opacity: 0.18;
    transition: opacity 0.25s ease;
}

.course-slides--overlay:hover {
    opacity: 1;
}

.course-slides--overlay .course-slides-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 0.75rem;
    flex-shrink: 0;
}

.course-slides--overlay .course-slides-track {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.course-slides--overlay .course-slides-track::-webkit-scrollbar {
    width: 6px;
}

.course-slides--overlay .course-slides-track::-webkit-scrollbar-track {
    background: transparent;
}

.course-slides--overlay .course-slides-track::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.course-slides--overlay .course-slides-card {
    flex: 0 0 auto;
    text-decoration: none;
    color: var(--text);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(0, 0, 0, 0.4);
    overflow: hidden;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.course-slides--overlay .course-slides-card:hover {
    border-color: rgba(34, 197, 94, 0.5);
    box-shadow: 0 0 0 1px rgba(34, 197, 94, 0.3);
    background: rgba(0, 0, 0, 0.22);
}

.course-slides--overlay .course-slides-preview {
    position: relative;
    width: 100%;
    height: 65px;
    background: rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.course-slides--overlay .course-slides-thumb {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.course-slides--overlay .course-slides-label {
    display: block;
    font-size: 0.85rem;
    text-align: center;
}

/* Модальное окно просмотра PDF презентации */
.course-pdf-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.course-pdf-modal[hidden] {
    display: none;
}

.course-pdf-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    cursor: pointer;
}

.course-pdf-modal__box {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 900px;
    aspect-ratio: 16 / 9;
    max-height: 90vh;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.course-pdf-modal__view {
    position: absolute;
    inset: 0;
    z-index: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #525659;
}

.course-pdf-modal__img {
    max-width: 100%;
    max-height: 100%;
    display: block;
    object-fit: contain;
}

.course-pdf-modal__loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.course-pdf-modal__loading[hidden] {
    display: none;
}

.course-pdf-modal__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 48px;
    height: 48px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.course-pdf-modal__nav:hover {
    background: rgba(0, 0, 0, 0.75);
}

.course-pdf-modal__nav[aria-disabled="true"] {
    opacity: 0.5;
}

.course-pdf-modal__nav[aria-disabled="true"]:hover {
    background: rgba(0, 0, 0, 0.5);
}

.course-pdf-modal__nav .material-icons {
    font-size: 32px;
}

.course-pdf-modal__nav--prev {
    left: 12px;
}

.course-pdf-modal__nav--next {
    right: 12px;
}

.course-content-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
    flex-shrink: 0;
}

/* Высота блока задаётся по контенту iframe через JS (postMessage), без своего скролла */
.course-content-player {
    width: 100%;
    margin-top: 0.25rem;
    min-height: 200px;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.course-content-player:has(.course-content-placeholder) {
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.course-content-iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
    vertical-align: top;
}

.course-content-placeholder {
    color: var(--text-muted);
    margin: 0;
}

.course-content-item {
    margin-bottom: 1.25rem;
}

.course-content-item:last-child {
    margin-bottom: 0;
}

.course-content-markdown {
    margin-top: 0.25rem;
    line-height: 1.6;
}

.course-content-markdown img,
.course-content-markdown svg,
.course-content-markdown figure {
    max-width: 100%;
}

.course-content-markdown img,
.course-content-markdown svg {
    height: auto;
    display: block;
}

.course-content-markdown :first-child {
    margin-top: 0;
}

.course-content-markdown a {
    color: #f97316;
}

.course-content-markdown a:hover {
    color: #ea580c;
}

.course-content-markdown h1,
.course-content-markdown h2,
.course-content-markdown h3 {
    margin: 1.25em 0 0.5em 0;
    font-weight: 600;
}

.course-content-markdown p {
    margin: 0.75em 0;
}

.course-content-markdown ul,
.course-content-markdown ol {
    margin: 0.75em 0;
    padding-left: 1.5em;
}

.course-content-markdown code {
    padding: 0.15em 0.4em;
    background: var(--bg-card);
    border-radius: 4px;
    font-size: 0.9em;
}

.course-content-markdown pre {
    margin: 1em 0;
    padding: 1rem;
    overflow-x: auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.course-content-markdown pre code {
    padding: 0;
    background: none;
}

.course-content-placeholder-wrap {
    padding: 2rem;
    text-align: center;
}

/* Заметки из Markdown: > [!success] Заголовок  или  > [!info] Заголовок */
.note {
    margin: 1.25rem 0;
    padding: 1rem 1.25rem;
    border-radius: 14px;
    border: 1px solid transparent;
}

.note--success {
    background: rgba(34, 197, 94, 0.12);
    border-color: rgba(34, 197, 94, 0.35);
}

.note--info {
    background: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.35);
}

.note__header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.note__icon.material-icons {
    font-size: 1.25rem;
    width: 1.25rem;
    height: 1.25rem;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    /* Опускаем глиф: в Material Icons он визуально завышен относительно центра */
    transform: translateY(2px);
}

.note__title {
    font-weight: 600;
}

.note--success .note__icon {
    color: #22c55e;
}

.note--success .note__body a {
    color: #22c55e;
}

.note--info .note__icon {
    color: #3b82f6;
}

.note--info .note__body a {
    color: #3b82f6;
}

.note__body {
    margin-left: 1.75rem;
}

.note__body p:first-child {
    margin-top: 0;
}

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

/* Иконка «внешняя ссылка» (стрелка вверх-вправо) у ссылок в контенте урока */
.course-content-markdown a[href^="http"],
.course-content-markdown a[href^="https"],
.note__body a[href^="http"],
.note__body a[href^="https"] {
    display: inline-flex;
    align-items: center;
    gap: 0.2em;
}

.course-content-markdown a[href^="http"]::after,
.course-content-markdown a[href^="https"]::after,
.note__body a[href^="http"]::after,
.note__body a[href^="https"]::after {
    content: "\e89e";
    font-family: "Material Icons";
    font-size: 0.9em;
    font-weight: 400;
}

/* Блок ввода флага — разблокирует следующий урок */
.course-flag-block {
    margin-top: 1rem;
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.course-flag-block__title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 0.75rem 0;
}

.course-flag-block__form {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.course-flag-block__input {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    font-size: 0.95rem;
    min-width: 200px;
}

.course-flag-block__submit {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.9rem;
}

.course-flag-block__submit:hover {
    opacity: 0.9;
}

.course-flag-block__message {
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

.course-flag-block__message--success {
    color: var(--success, #22c55e);
}

.course-flag-block__message--error {
    color: var(--error, #ef4444);
}

.course-flag-block__message--info {
    color: var(--text-muted);
}

/* Страница регистрации */
.auth-page {
    max-width: 420px;
    margin: 2rem auto;
}

.auth-page__title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 0 1.25rem 0;
}

.auth-form__form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.auth-form__field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.auth-form__field label {
    font-size: 0.9rem;
    font-weight: 500;
}

.auth-form__help {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.auth-form__errors {
    list-style: none;
    margin: 0 0 0.5rem 0;
    padding: 0;
}

.auth-form__submit {
    align-self: flex-start;
    margin-top: 0.25rem;
}

.auth-page__footer {
    margin-top: 1.25rem;
    font-size: 0.95rem;
}

.auth-page__footer a {
    color: var(--accent);
}

.course-plan-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 0.75rem 0;
}

.course-content-plan {
    margin-top: 1rem;
}