@import url('open-iconic/font/css/open-iconic-bootstrap.min.css');
body, h1, h2, h3, h4, h5, h6, .nav-link {
    font-family: Roboto, sans-serif !important;
}

/* Logo trang đăng nhập / quên mật khẩu — giữ trong khung, không tràn card */
.auth-logo-wrap {
    display: block;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 0.5rem;
    box-sizing: border-box;
    overflow: hidden;
    text-decoration: none;
}

.auth-logo-wrap .auth-logo-img {
    display: block;
    max-width: 100%;
    max-height: 88px;
    width: auto;
    height: auto;
    margin: 0 auto;
    object-fit: contain;
}
.navbar-menu {
    z-index: 1005 !important;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Velzon template scrolls #scrollbar via SimpleBar (app.js); enable native scroll for Blazor */
.navbar-menu #scrollbar {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.navbar-menu #scrollbar::-webkit-scrollbar {
    display: none;
}

/* Mũi tên collapse (::after position:absolute) phải neo theo từng dòng menu khi scroll */
.navbar-menu #scrollbar .navbar-nav .nav-link[data-bs-toggle="collapse"] {
    position: relative;
}
.ck-content .image > figcaption {
    min-height: 5px !important;
}
.mud-input {
    font-size: .8125rem;
}
.mud-icon-size-medium {
    font-size: 1.25rem;
}
.box-loading {
    width: 100%;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.schedule-table tbody td {
    transition: background-color 0.2s ease;
}

.schedule-table tbody td:hover {
    background-color: #e9ecef;
    cursor: pointer;
}

/* Đồng bộ chiều cao vùng logo sidebar với topbar (Velzon mặc định ~70px) */
#page-topbar .navbar-header,
.navbar-menu .navbar-brand-box {
    min-height: 70px;
    height: 70px;
    align-items: center;
}

.navbar-menu .navbar-brand-box {
    width: 100%;
    padding: 0 1rem;
}

.navbar-menu .navbar-brand-box .logo {
    flex: 1;
    display: flex;
    justify-content: center;
    min-width: 0;
}

.navbar-menu .navbar-brand-box .logo img {
    max-height: 50px;
    width: 100%;
    object-fit: contain;
}

/* Logo topbar — chỉ mobile */
.topbar-logo-center {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    pointer-events: none;
}

.topbar-logo-center .logo {
    pointer-events: auto;
}

.topbar-logo-center img {
    max-height: 44px;
    width: auto;
    object-fit: contain;
}
/* Pure Blazor CSS for Mobile Sidebar Toggle */
@media (max-width: 767.98px) {
    /* Ẩn menu đi theo mặc định trên mobile */
    .app-menu:not(.sm-menu-open) {
        transform: translate3d(-100%, 0, 0) !important;
        visibility: hidden !important;
    }

    .vertical-overlay:not(.sm-menu-open) {
        display: none !important;
    }

    /* Hiện menu khi click icon bar */
    .app-menu.sm-menu-open {
        transform: translate3d(0, 0, 0) !important;
        visibility: visible !important;
        left: 0 !important;
    }

    .vertical-overlay.sm-menu-open {
        display: block !important;
        opacity: 1 !important;
        z-index: 1004 !important;
    }
}

/* ==========================================================================
   Learning Material Tab Redesign (Chapter Tree & Playlist)
   ========================================================================== */
.chapter-tree-card {
    border: 1px solid rgba(0, 0, 0, 0.08) !important;
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03) !important;
}

.chapter-tree-list {
    display: flex;
    flex-direction: column;
}

.tree-item {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border-left: 3px solid transparent;
    user-select: none;
}

.tree-item:hover {
    background-color: rgba(64, 93, 230, 0.04);
}

.tree-item.active {
    background-color: rgba(64, 93, 230, 0.08);
    border-left-color: #405ded;
}

.tree-item-group {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.tree-children {
    background-color: rgba(0, 0, 0, 0.015);
    padding-bottom: 6px;
    border-left: 1px dashed rgba(0, 0, 0, 0.08);
    margin-left: 28px;
}

.child-item {
    border-left: 3px solid transparent;
}

.child-item.active {
    background-color: rgba(64, 93, 230, 0.08);
    border-left-color: #405ded;
}

/* Tree Alignment Containers */
.tree-toggle-container {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 6px;
    flex-shrink: 0;
}

.tree-icon {
    width: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 8px;
    flex-shrink: 0;
}

.tree-name-wrapper {
    display: flex;
    align-items: center;
    min-width: 0;
    flex-grow: 1;
}

.grandchild-tree-children {
    margin-left: 20px;
    border-left: 1px dotted rgba(0, 0, 0, 0.08);
}

.setting-btn {
    opacity: 0.3;
    transition: all 0.2s ease;
    width: 28px;
    height: 28px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tree-item:hover .setting-btn,
.setting-btn:focus,
.setting-btn[aria-expanded="true"] {
    opacity: 1;
    background-color: rgba(0, 0, 0, 0.05);
}

/* Toggle button styling */
.toggle-btn {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
}

.toggle-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
}

/* Playlist / Preview Styles */
.preview-area {
    background-color: #0c101b;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.preview-area iframe {
    background-color: #ffffff;
}

.material-playlist {
    padding: 12px;
    scrollbar-width: thin;
    max-height: 280px;
    overflow-y: auto;
}

.material-playlist::-webkit-scrollbar {
    width: 6px;
}

.material-playlist::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.02);
}

.material-playlist::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 4px;
}

.material-playlist::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

.playlist-item {
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    margin-bottom: 8px;
    background-color: #ffffff;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
    border-left: 3px solid transparent;
}

.playlist-item:hover {
    background-color: #f8f9fa;
    border-color: rgba(64, 93, 230, 0.15);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(64, 93, 230, 0.04);
}

.playlist-item.active {
    background-color: rgba(64, 93, 230, 0.05);
    border-color: rgba(64, 93, 230, 0.3);
    box-shadow: 0 4px 10px rgba(64, 93, 230, 0.06);
    border-left-color: #405ded;
}

.playlist-item:hover .playlist-delete-btn {
    opacity: 1 !important;
}

.playlist-delete-btn {
    transition: all 0.2s ease;
}