/* Theme tham khao https://hmu.edu.vn/ — xanh chu dao, hong nhan dien */
:root {
    --hmu-xanh: #007ad9;
    --hmu-xanh-hover: #116fbf;
    --hmu-xanh-dam: #005b9f;
    --hmu-hong: #ba3b59;
    --hmu-hong-nhat: #e4018d;
    --hmu-nen: #f4f4f4;
    --hmu-nen-card: #ffffff;
    --hmu-chu: #333333;
    --hmu-chu-phu: #848484;
    --hmu-vien: #eaeaea;
    --hmu-thanh-cong: #03a84f;
    --hmu-footer: #003d6b;

    --bs-primary: var(--hmu-xanh);
    --bs-primary-rgb: 0, 122, 217;
    --bs-link-color: var(--hmu-xanh);
    --bs-link-hover-color: var(--hmu-xanh-dam);
    --bs-success: var(--hmu-xanh);
    --bs-success-rgb: 0, 122, 217;
    --bs-info: #2489ce;
    --bs-info-rgb: 36, 137, 206;
    --bs-body-color: var(--hmu-chu);
    --bs-body-bg: var(--hmu-nen);
    --bs-border-color: var(--hmu-vien);
    --bs-secondary-color: var(--hmu-chu-phu);
    --mau-chinh: var(--hmu-xanh);
    --mau-phu: var(--hmu-xanh-dam);
}

body {
    background-color: var(--hmu-nen);
    color: var(--hmu-chu);
    font-family: "Open Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
}

/* Thanh accent hong — giong nhan dien HMU */
.hmu-accent-bar {
    height: 4px;
    background: linear-gradient(90deg, var(--hmu-hong) 0%, var(--hmu-hong-nhat) 50%, var(--hmu-xanh) 100%);
}

/* Navbar */
.navbar-hmu {
    background: linear-gradient(135deg, var(--hmu-xanh) 0%, var(--hmu-xanh-dam) 100%);
    box-shadow: 0 2px 12px rgba(0, 61, 107, 0.18);
}

.navbar-hmu .navbar-brand .ten-don-vi {
    font-size: .95rem;
    font-weight: 700;
    line-height: 1.2;
}

.navbar-hmu .navbar-brand .ten-phu {
    font-size: .75rem;
    opacity: .92;
}

.navbar-logo-img {
    height: 42px;
    width: auto;
    max-width: 120px;
    object-fit: contain;
    border-radius: .35rem;
    background: rgba(255, 255, 255, 0.15);
    padding: 2px 4px;
}

.navbar-hmu .nav-link {
    border-radius: .35rem;
    transition: background-color .15s, color .15s;
}

.navbar-hmu .nav-link:hover,
.navbar-hmu .nav-link:focus {
    background-color: rgba(255, 255, 255, 0.12);
}

.navbar-hmu .dropdown-menu {
    border: none;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-top: 3px solid var(--hmu-hong);
}

.navbar-hmu .dropdown-item:hover {
    background-color: #e8f4fc;
    color: var(--hmu-xanh-dam);
}

.navbar-hmu .dropdown-menu .dropdown-item i {
    width: 1.25rem;
    margin-right: .35rem;
    opacity: .85;
}

.navbar-hmu .dropdown-menu .dropdown-header {
    font-weight: 600;
    color: var(--hmu-xanh-dam);
}

/* Sub-header */
.hmu-subheader {
    background: var(--hmu-nen-card);
    border-bottom: 1px solid var(--hmu-vien);
    color: var(--hmu-chu-phu);
}

.hmu-subheader strong {
    color: var(--hmu-xanh-dam);
}

/* Card */
.card {
    border: 1px solid var(--hmu-vien);
    border-radius: .5rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform .15s, box-shadow .15s;
    background: var(--hmu-nen-card);
}

/* Card khoa hoc — trang chu */
.card-khoa-hoc {
    border: none;
    border-radius: .75rem;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 61, 107, 0.08);
}

.card-khoa-hoc:hover {
    transform: translateY(-5px);
    box-shadow: 0 14px 32px rgba(0, 122, 217, 0.18);
}

.card-khoa-hoc-header {
    position: relative;
    height: 108px;
    padding: 1rem 1.15rem;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    overflow: hidden;
}

.card-khoa-hoc-header::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0.14;
    background-image: radial-gradient(circle at 85% 15%, #fff 0%, transparent 45%),
        radial-gradient(circle at 10% 90%, rgba(255, 255, 255, 0.35) 0%, transparent 40%);
}

.card-khoa-hoc-header::after {
    content: "";
    position: absolute;
    right: -24px;
    top: -24px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
}

.card-khoa-hoc-header--xanh {
    background: linear-gradient(135deg, var(--hmu-xanh) 0%, var(--hmu-xanh-dam) 100%);
}

.card-khoa-hoc-header--hong {
    background: linear-gradient(135deg, var(--hmu-hong) 0%, #8e2d45 55%, var(--hmu-xanh-dam) 100%);
}

.card-khoa-hoc-header--xanh-nhat {
    background: linear-gradient(135deg, #2489ce 0%, var(--hmu-xanh) 50%, #4da3e8 100%);
}

.card-khoa-hoc-icon {
    position: relative;
    z-index: 1;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.22);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.card-khoa-hoc-badge {
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.95);
    color: var(--hmu-xanh-dam);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .02em;
    padding: .35rem .65rem;
    border-radius: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.card-khoa-hoc .card-body {
    padding: 1.15rem 1.15rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}

.card-khoa-hoc-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--hmu-chu);
    line-height: 1.35;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-khoa-hoc-mota {
    font-size: .82rem;
    color: var(--hmu-chu-phu);
    line-height: 1.55;
    margin: 0 0 .35rem;
    min-height: 2.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-khoa-hoc-meta {
    display: flex;
    align-items: center;
    gap: .35rem;
    font-size: .75rem;
    color: var(--hmu-chu-phu);
    padding-bottom: .15rem;
}

.card-khoa-hoc-meta i {
    color: var(--hmu-xanh);
}

.btn-khoa-hoc {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .25rem;
    padding: .55rem 1rem;
    border-radius: .5rem;
    font-weight: 600;
    font-size: .88rem;
    color: #fff;
    background: linear-gradient(135deg, var(--hmu-xanh), var(--hmu-xanh-dam));
    border: none;
    text-decoration: none;
    transition: transform .15s, box-shadow .15s, filter .15s;
    box-shadow: 0 4px 12px rgba(0, 122, 217, 0.25);
}

.btn-khoa-hoc:hover {
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0, 122, 217, 0.35);
    filter: brightness(1.05);
}

.btn-khoa-hoc i {
    font-size: 1.15rem;
    transition: transform .15s;
}

.btn-khoa-hoc:hover i {
    transform: translateX(3px);
}

/* Hero tieu de trang */
.page-hero,
.trang-chu-hero {
    background: linear-gradient(135deg, #fff 0%, #e8f4fc 100%);
    border: 1px solid rgba(0, 122, 217, 0.12);
    border-radius: .75rem;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.5rem;
}

.page-hero h1,
.trang-chu-hero h1,
.page-title {
    color: var(--hmu-xanh-dam);
    font-weight: 700;
}

.page-hero h1 i,
.trang-chu-hero h1 i,
.page-title i {
    color: var(--hmu-hong);
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: .75rem;
    margin-bottom: 1.25rem;
}

.hmu-section-title,
.chi-tiet-khoa-section-title {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--hmu-xanh-dam);
    margin-bottom: 1rem;
    padding-bottom: .5rem;
    border-bottom: 2px solid #e8f4fc;
}

.hmu-section-title i,
.chi-tiet-khoa-section-title i {
    color: var(--hmu-hong);
}

.card-header-hmu {
    background: linear-gradient(135deg, var(--hmu-xanh), var(--hmu-xanh-dam));
    color: #fff;
    border-bottom: none;
}

/* Nut & link theo mau HMU */
.btn-primary,
.btn-success {
    background-color: var(--hmu-xanh);
    border-color: var(--hmu-xanh);
}

.btn-primary:hover,
.btn-success:hover,
.btn-primary:focus,
.btn-success:focus {
    background-color: var(--hmu-xanh-hover);
    border-color: var(--hmu-xanh-hover);
}

.btn-primary:active,
.btn-success:active {
    background-color: var(--hmu-xanh-dam);
    border-color: var(--hmu-xanh-dam);
}

.btn-outline-primary,
.btn-outline-success {
    color: var(--hmu-xanh);
    border-color: var(--hmu-xanh);
}

.btn-outline-primary:hover,
.btn-outline-success:hover {
    background-color: var(--hmu-xanh);
    border-color: var(--hmu-xanh);
    color: #fff;
}

.text-primary,
.text-success {
    color: var(--hmu-xanh) !important;
}

.badge-hmu,
.badge.bg-success {
    background-color: var(--hmu-xanh) !important;
}

.list-group-item.active {
    background-color: var(--hmu-xanh);
    border-color: var(--hmu-xanh);
}

.list-group-item-action:hover {
    background-color: #e8f4fc;
    color: var(--hmu-xanh-dam);
}

/* Alert thanh cong giu xanh la y te */
.alert-success {
    --bs-alert-color: #0a5c2e;
    --bs-alert-bg: #e8f8ef;
    --bs-alert-border-color: #9ed9b8;
    color: #0a5c2e;
    background-color: #e8f8ef;
    border-color: #9ed9b8;
}

.alert-info {
    --bs-alert-bg: #e8f4fc;
    --bs-alert-border-color: #b3d9f5;
    color: var(--hmu-xanh-dam);
}

.tb-chua-doc {
    border-left: 4px solid var(--hmu-hong);
    background: #fff;
}

/* Footer */
.footer-hmu {
    background: linear-gradient(180deg, var(--hmu-footer) 0%, #002a4a 100%);
    color: #c5d9eb;
}

.footer-hmu a {
    color: #7ec8ff;
}

.footer-hmu a:hover {
    color: #fff;
}

.footer-hmu .hmu-slogan {
    color: var(--hmu-hong);
    font-style: italic;
    font-size: .85rem;
}

/* Form */
.form-control {
    --bs-secondary-color: #b0bcc8;
    border-color: #c8c8c8;
}

.form-control:focus {
    border-color: var(--hmu-xanh);
    box-shadow: 0 0 0 .2rem rgba(0, 122, 217, 0.2);
}

.form-control:not(:placeholder-shown) {
    color: var(--hmu-chu);
}

/* Trang dang nhap */
.hmu-login-card {
    border-top: 4px solid var(--hmu-hong);
}

.hmu-login-card .card-body h2 i {
    color: var(--hmu-xanh);
}

/* Thanh toan / panel dac biet */
.border-success {
    border-color: rgba(0, 122, 217, 0.35) !important;
}

.border-success.border-opacity-25 {
    border-color: rgba(0, 122, 217, 0.25) !important;
}

/* Admin sidebar — mau nen dat truc tiep len tung item (Bootstrap mac dinh nen trang) */
.admin-sidebar .admin-menu-vung .list-group-item {
    border-color: rgba(0, 0, 0, .08);
}

.admin-sidebar .admin-menu-vung-tong-quan .list-group-item {
    background-color: #ffffff !important;
}

.admin-sidebar .admin-menu-vung-tong-quan .list-group-item-action:hover,
.admin-sidebar .admin-menu-vung-tong-quan .list-group-item-action:focus {
    background-color: #f0f6fc !important;
}

.admin-sidebar .admin-menu-vung-nguoi-dung .list-group-item {
    background-color: #dbeaf8 !important;
}

.admin-sidebar .admin-menu-vung-nguoi-dung .admin-menu-divider {
    background-color: #b8d4ef !important;
    border-top-color: #9fc0e3 !important;
    color: #1e4a6e !important;
}

.admin-sidebar .admin-menu-vung-nguoi-dung .list-group-item-action:hover,
.admin-sidebar .admin-menu-vung-nguoi-dung .list-group-item-action:focus {
    background-color: #c8dff5 !important;
}

.admin-sidebar .admin-menu-vung-noi-dung .list-group-item {
    background-color: #e0efd8 !important;
}

.admin-sidebar .admin-menu-vung-noi-dung .admin-menu-divider {
    background-color: #bdd8b0 !important;
    border-top-color: #a5c898 !important;
    color: #2d4a24 !important;
}

.admin-sidebar .admin-menu-vung-noi-dung .list-group-item-action:hover,
.admin-sidebar .admin-menu-vung-noi-dung .list-group-item-action:focus {
    background-color: #cde4c4 !important;
}

.admin-sidebar .admin-menu-vung-he-thong .list-group-item {
    background-color: #e6dff5 !important;
}

.admin-sidebar .admin-menu-vung-he-thong .admin-menu-divider {
    background-color: #cfc0e8 !important;
    border-top-color: #b8a5db !important;
    color: #3d2d5c !important;
}

.admin-sidebar .admin-menu-vung-he-thong .list-group-item-action:hover,
.admin-sidebar .admin-menu-vung-he-thong .list-group-item-action:focus {
    background-color: #d8cff0 !important;
}

.admin-sidebar .admin-menu-vung-thanh-toan .list-group-item {
    background-color: #fdebd0 !important;
}

.admin-sidebar .admin-menu-vung-thanh-toan .admin-menu-divider {
    background-color: #f5d49a !important;
    border-top-color: #e8bf72 !important;
    color: #5c4208 !important;
}

.admin-sidebar .admin-menu-vung-thanh-toan .list-group-item-action:hover,
.admin-sidebar .admin-menu-vung-thanh-toan .list-group-item-action:focus {
    background-color: #f9dfab !important;
}

.admin-sidebar .admin-menu-vung-bao-cao .list-group-item {
    background-color: #d5efea !important;
}

.admin-sidebar .admin-menu-vung-bao-cao .admin-menu-divider {
    background-color: #a8dbd2 !important;
    border-top-color: #8bc9be !important;
    color: #1f4a42 !important;
}

.admin-sidebar .admin-menu-vung-bao-cao .list-group-item-action:hover,
.admin-sidebar .admin-menu-vung-bao-cao .list-group-item-action:focus {
    background-color: #c0e5de !important;
}

/* Muc dang chon: nen xanh HMU + chu trang (ghi de mau nen tung vung) */
.admin-sidebar .admin-menu-vung .list-group-item.active,
.admin-sidebar .admin-menu-vung .list-group-item.active:hover,
.admin-sidebar .admin-menu-vung .list-group-item.active:focus {
    background-color: var(--hmu-xanh) !important;
    border-color: var(--hmu-xanh) !important;
    color: #fff !important;
}

.admin-sidebar .admin-menu-divider {
    padding: .5rem 1rem .35rem;
    font-size: .7rem;
    font-weight: 800;
    letter-spacing: .05em;
    text-transform: uppercase;
    border-top: 2px solid rgba(0, 0, 0, .08);
    border-bottom: none;
    pointer-events: none;
    user-select: none;
}

.admin-sidebar .list-group-item-action i.bi {
    width: 1.2rem;
    text-align: center;
    opacity: .88;
}

.admin-sidebar .list-group-item.active i.bi {
    color: #fff !important;
    opacity: 1;
}

.admin-sidebar .list-group-item-action.fw-semibold,
.admin-sidebar .list-group-item.active {
    border-left: 3px solid var(--hmu-hong);
}

/* Pagination & table nhe */
.table thead th {
    background: #e8f4fc;
    color: var(--hmu-xanh-dam);
    border-bottom-color: var(--hmu-vien);
}

.page-link {
    color: var(--hmu-xanh);
}

.page-link:hover {
    color: var(--hmu-xanh-dam);
    background-color: #e8f4fc;
}

.page-item.active .page-link {
    background-color: var(--hmu-xanh);
    border-color: var(--hmu-xanh);
}

/* Chi tiet khoa hoc */
.breadcrumb-hmu {
    background: #fff;
    border: 1px solid var(--hmu-vien);
    border-radius: .5rem;
    padding: .65rem 1rem;
    margin-bottom: 1.25rem;
}

.breadcrumb-hmu .breadcrumb {
    margin: 0;
}

.breadcrumb-hmu .breadcrumb-item a {
    color: var(--hmu-xanh);
    text-decoration: none;
    font-weight: 600;
}

.breadcrumb-hmu .breadcrumb-item.active {
    color: var(--hmu-chu-phu);
}

.chi-tiet-khoa-hero {
    position: relative;
    border-radius: .85rem;
    overflow: hidden;
    margin-bottom: 1.75rem;
    color: #fff;
    box-shadow: 0 10px 28px rgba(0, 61, 107, 0.18);
}

.chi-tiet-khoa-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 90% 10%, rgba(255, 255, 255, 0.2) 0%, transparent 42%),
        radial-gradient(circle at 5% 95%, rgba(255, 255, 255, 0.12) 0%, transparent 38%);
    pointer-events: none;
}

.chi-tiet-khoa-hero--xanh {
    background: linear-gradient(135deg, var(--hmu-xanh) 0%, var(--hmu-xanh-dam) 100%);
}

.chi-tiet-khoa-hero--hong {
    background: linear-gradient(135deg, var(--hmu-hong) 0%, #8e2d45 50%, var(--hmu-xanh-dam) 100%);
}

.chi-tiet-khoa-hero--xanh-nhat {
    background: linear-gradient(135deg, #2489ce 0%, var(--hmu-xanh) 55%, #4da3e8 100%);
}

.chi-tiet-khoa-hero-inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 1.25rem;
    padding: 1.5rem 1.65rem;
}

.chi-tiet-khoa-hero-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.85rem;
    flex-shrink: 0;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.chi-tiet-khoa-hero-text {
    flex: 1 1 280px;
    min-width: 0;
}

.chi-tiet-khoa-hero-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0 0 .45rem;
    line-height: 1.35;
}

.chi-tiet-khoa-hero-mota {
    margin: 0 0 .85rem;
    opacity: .92;
    font-size: .9rem;
    line-height: 1.55;
    max-width: 52rem;
}

.chi-tiet-khoa-stats {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

.chi-tiet-khoa-stat {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 2rem;
    padding: .3rem .75rem;
    font-size: .78rem;
    font-weight: 600;
}

.chi-tiet-khoa-actions {
    flex: 0 0 auto;
    min-width: 180px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: .75rem;
    padding: 1rem 1.1rem;
    text-align: center;
}

.chi-tiet-khoa-actions .btn-ghi-danh {
    background: #fff;
    color: var(--hmu-xanh-dam);
    border: none;
    font-weight: 700;
    border-radius: .5rem;
    padding: .5rem 1rem;
    width: 100%;
    transition: transform .15s, box-shadow .15s;
}

.chi-tiet-khoa-actions .btn-ghi-danh:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    color: var(--hmu-xanh-dam);
}

.chi-tiet-khoa-tiendo-label {
    font-size: .72rem;
    opacity: .9;
    margin-bottom: .35rem;
}

.chi-tiet-khoa-tiendo-value {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1;
}

.chi-tiet-khoa-tiendo-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 3px;
    margin-top: .5rem;
    overflow: hidden;
}

.chi-tiet-khoa-tiendo-bar-fill {
    height: 100%;
    background: #fff;
    border-radius: 3px;
    transition: width .3s;
}

.chi-tiet-khoa-alert-tt {
    background: linear-gradient(135deg, #fff8e8 0%, #fff3d6 100%);
    border: 1px solid #f0d9a8;
    border-left: 4px solid #e77810;
    border-radius: .65rem;
    padding: 1rem 1.15rem;
    margin-bottom: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .75rem;
}

.chi-tiet-khoa-alert-tt i {
    color: #e77810;
    font-size: 1.25rem;
}

.chi-tiet-khoa-section {
    margin-bottom: 1.75rem;
}

.chi-tiet-khoa-section-title {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--hmu-xanh-dam);
    margin-bottom: 1rem;
    padding-bottom: .5rem;
    border-bottom: 2px solid #e8f4fc;
}

.chi-tiet-khoa-section-title i {
    color: var(--hmu-hong);
}

.bai-hoc-list {
    display: flex;
    flex-direction: column;
    gap: .65rem;
}

.bai-hoc-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #fff;
    border: 1px solid var(--hmu-vien);
    border-radius: .65rem;
    padding: .85rem 1rem;
    text-decoration: none;
    color: inherit;
    transition: transform .15s, box-shadow .15s, border-color .15s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.bai-hoc-item:hover {
    transform: translateX(4px);
    border-color: rgba(0, 122, 217, 0.35);
    box-shadow: 0 6px 18px rgba(0, 122, 217, 0.12);
    color: inherit;
}

.bai-hoc-item--xong {
    border-left: 4px solid var(--hmu-thanh-cong);
    background: linear-gradient(90deg, #f0faf4 0%, #fff 28%);
}

.bai-hoc-item--dang {
    border-left: 4px solid #e77810;
}

.bai-hoc-stt {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--hmu-xanh), var(--hmu-xanh-dam));
    color: #fff;
    font-weight: 800;
    font-size: .95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.bai-hoc-item--xong .bai-hoc-stt {
    background: linear-gradient(135deg, var(--hmu-thanh-cong), #028a42);
}

.bai-hoc-noi-dung {
    flex: 1;
    min-width: 0;
}

.bai-hoc-tieu-de {
    font-weight: 700;
    font-size: .95rem;
    color: var(--hmu-chu);
    margin-bottom: .35rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bai-hoc-progress {
    height: 5px;
    background: #eef2f6;
    border-radius: 3px;
    overflow: hidden;
}

.bai-hoc-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--hmu-xanh), #4da3e8);
    border-radius: 3px;
}

.bai-hoc-item--xong .bai-hoc-progress-bar {
    background: linear-gradient(90deg, var(--hmu-thanh-cong), #2ecc71);
}

.bai-hoc-trang-thai {
    flex-shrink: 0;
    text-align: right;
    min-width: 88px;
}

.bai-hoc-badge {
    display: inline-block;
    font-size: .7rem;
    font-weight: 700;
    padding: .28rem .55rem;
    border-radius: 2rem;
}

.bai-hoc-badge--xong {
    background: #e8f8ef;
    color: #0a5c2e;
}

.bai-hoc-badge--chua {
    background: #f0f2f5;
    color: #666;
}

.bai-hoc-badge--dang {
    background: #fff3d6;
    color: #9a5b00;
}

.kiem-tra-list {
    display: grid;
    gap: .65rem;
}

.kiem-tra-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    background: #fff;
    border: 1px solid var(--hmu-vien);
    border-left: 4px solid var(--hmu-hong);
    border-radius: .65rem;
    padding: .9rem 1.1rem;
    text-decoration: none;
    color: inherit;
    transition: transform .15s, box-shadow .15s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.kiem-tra-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(186, 59, 89, 0.12);
    color: inherit;
}

.kiem-tra-item strong {
    color: var(--hmu-xanh-dam);
}

.kiem-tra-item .kiem-tra-meta {
    font-size: .75rem;
    color: var(--hmu-chu-phu);
    white-space: nowrap;
}

/* ============================================================
   He thong giao dien dong nhat — toan web-vb
   ============================================================ */

/* Breadcrumb mac dinh */
.hmu-site nav[aria-label="breadcrumb"]:not(.breadcrumb-hmu) {
    background: #fff;
    border: 1px solid var(--hmu-vien);
    border-radius: .5rem;
    padding: .6rem 1rem;
    margin-bottom: 1.25rem;
}

.hmu-site nav[aria-label="breadcrumb"] .breadcrumb {
    margin-bottom: 0;
}

.hmu-site nav[aria-label="breadcrumb"] .breadcrumb-item a {
    color: var(--hmu-xanh);
    text-decoration: none;
}

.hmu-site nav[aria-label="breadcrumb"] .breadcrumb-item a:hover {
    color: var(--hmu-hong);
}

/* Alert dong nhat */
.hmu-site .alert {
    border-radius: .65rem;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.hmu-site .alert-danger {
    background: #fde8ec;
    color: #8b1a2e;
}

.hmu-site .alert-success {
    background: #e8f8ef;
    color: #0a5c2e;
}

.hmu-site .alert-info {
    background: #e8f4fc;
    color: var(--hmu-xanh-dam);
}

.hmu-site .alert-warning {
    background: #fff8e6;
    color: #7a5a00;
}

/* Card mac dinh trong noi dung */
.hmu-site main.container > .card,
.hmu-site main.container .card:not(.card-khoa-hoc):not(.hmu-login-card) {
    border: 1px solid var(--hmu-vien);
    border-radius: .75rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

.hmu-site main.container .card-header:not(.card-header-hmu) {
    background: linear-gradient(135deg, #f8fbfe 0%, #eef6fc 100%);
    border-bottom: 1px solid var(--hmu-vien);
    font-weight: 600;
    color: var(--hmu-xanh-dam);
}

/* Bang du lieu hoc vien */
.hmu-site .table-responsive {
    border-radius: .75rem;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--hmu-vien);
}

.hmu-site .table {
    margin-bottom: 0;
}

.hmu-site .table thead th,
.hmu-site .table thead.table-light th {
    background: linear-gradient(135deg, var(--hmu-xanh), var(--hmu-xanh-dam));
    color: #fff;
    font-weight: 600;
    font-size: .8rem;
    border: none;
    padding: .75rem 1rem;
}

.hmu-site .table tbody td {
    padding: .7rem 1rem;
    vertical-align: middle;
    border-color: #eef2f6;
}

.hmu-site .table-hover tbody tr:hover {
    background: #f0f7fd;
}

/* Panel huong dan / thong tin */
.hmu-info-panel {
    background: linear-gradient(135deg, #fff 0%, #e8f8ef 100%);
    border: 1px solid rgba(0, 122, 217, 0.15);
    border-left: 4px solid var(--hmu-xanh);
    border-radius: .75rem;
    padding: 1.1rem 1.25rem;
    margin-bottom: 1.25rem;
    box-shadow: 0 2px 10px rgba(0, 122, 217, 0.06);
}

.hmu-info-panel h2,
.hmu-info-panel .h6 {
    color: var(--hmu-xanh-dam);
    font-weight: 700;
}

.hmu-info-panel code {
    background: rgba(0, 122, 217, 0.08);
    color: var(--hmu-xanh-dam);
    padding: .1rem .35rem;
    border-radius: .25rem;
    font-size: .8em;
}

/* Goi hoc phi */
.goi-hoc-phi-card {
    border: 1px solid var(--hmu-vien);
    border-radius: .75rem;
    overflow: hidden;
    margin-bottom: 1rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    transition: transform .15s, box-shadow .15s;
}

.goi-hoc-phi-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 122, 217, 0.1);
}

.goi-hoc-phi-card .goi-hoc-phi-header {
    background: linear-gradient(135deg, var(--hmu-xanh) 0%, var(--hmu-xanh-dam) 100%);
    color: #fff;
    padding: .85rem 1.15rem;
}

.goi-hoc-phi-card .goi-hoc-phi-gia {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--hmu-xanh);
}

.goi-hoc-phi-card .goi-hoc-phi-body {
    padding: 1.1rem 1.15rem;
    background: #fff;
}

.goi-hoc-phi-card .da-thanh-toan-box {
    background: linear-gradient(135deg, #e8f8ef 0%, #d4f0e0 100%);
    border: 1px solid rgba(10, 92, 46, 0.15);
    border-radius: .65rem;
    padding: .9rem 1rem;
}

/* Chung chi & huy hieu */
.chung-chi-card,
.huy-hieu-card {
    border: 1px solid var(--hmu-vien);
    border-radius: .75rem;
    overflow: hidden;
    height: 100%;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    transition: transform .15s, box-shadow .15s;
    background: #fff;
}

.chung-chi-card:hover,
.huy-hieu-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(0, 122, 217, 0.12);
}

.chung-chi-card .chung-chi-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e8f8ef, #c8ecd8);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.chung-chi-card .chung-chi-icon i {
    font-size: 1.5rem;
    color: var(--hmu-thanh-cong);
}

.huy-hieu-card .huy-hieu-img {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: .5rem;
    background: #e8f4fc;
    flex-shrink: 0;
}

/* Thong bao */
.thong-bao-item {
    border: 1px solid var(--hmu-vien);
    border-radius: .75rem;
    margin-bottom: .85rem;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    transition: box-shadow .15s;
}

.thong-bao-item:hover {
    box-shadow: 0 6px 18px rgba(0, 122, 217, 0.08);
}

.thong-bao-item.tb-chua-doc {
    border-left: 4px solid var(--hmu-hong);
    background: linear-gradient(90deg, #fff5f7 0%, #fff 30%);
}

.thong-bao-item.tb-chua-doc .card-title {
    font-weight: 700;
    color: var(--hmu-xanh-dam);
}

/* Chi tiet bai hoc */
.chi-tiet-bai-hero {
    background: linear-gradient(135deg, var(--hmu-xanh) 0%, var(--hmu-xanh-dam) 70%, #005a9e 100%);
    border-radius: .75rem;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.25rem;
    color: #fff;
    box-shadow: 0 6px 20px rgba(0, 122, 217, 0.25);
}

.chi-tiet-bai-hero h1 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: .35rem;
}

.chi-tiet-bai-hero .chi-tiet-bai-mota {
    opacity: .9;
    font-size: .9rem;
    margin-bottom: 0;
}

.noi-dung-block {
    border: 1px solid var(--hmu-vien);
    border-left: 4px solid var(--hmu-xanh);
    border-radius: .65rem;
    margin-bottom: .85rem;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.noi-dung-block .noi-dung-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .7rem 1rem;
    background: linear-gradient(135deg, #f8fbfe 0%, #eef6fc 100%);
    border-bottom: 1px solid var(--hmu-vien);
}

.noi-dung-block .noi-dung-block-header strong {
    color: var(--hmu-xanh-dam);
}

.noi-dung-block .noi-dung-block-body {
    padding: 1rem;
}

/* Lam bai kiem tra */
.cau-hoi-card {
    border: 1px solid var(--hmu-vien);
    border-radius: .75rem;
    margin-bottom: .85rem;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

.cau-hoi-card .cau-hoi-header {
    background: linear-gradient(135deg, #f8fbfe 0%, #eef6fc 100%);
    padding: .65rem 1rem;
    border-bottom: 1px solid var(--hmu-vien);
    font-weight: 600;
    color: var(--hmu-xanh-dam);
}

.cau-hoi-card .cau-hoi-body {
    padding: 1rem;
}

.cau-hoi-card .form-check,
.cau-hoi-card label {
    padding: .35rem 0;
}

.ket-qua-tt-card {
    border: 1px solid var(--hmu-vien);
    border-radius: .75rem;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    background: #fff;
}

.ket-qua-tt-card .ket-qua-tt-body {
    padding: 2.5rem 2rem;
    text-align: center;
}

.ket-qua-tt-card .ket-qua-icon {
    font-size: 3.5rem;
    line-height: 1;
}

.ket-qua-tt-card .ket-qua-icon--thanh-cong {
    color: var(--hmu-thanh-cong);
}

/* Ket qua bai thi */
.ket-qua-bai-thi {
    background: linear-gradient(135deg, #e8f8ef 0%, #d4f0e0 100%);
    border: 1px solid rgba(10, 92, 46, 0.2);
    border-radius: .75rem;
    padding: 1.5rem;
    text-align: center;
    margin-bottom: 1.25rem;
}

/* ============================================================
   Admin — dong nhat qua .hmu-admin-content
   ============================================================ */
.hmu-admin-content > h1.h4,
.hmu-admin-content > .page-header .h4,
.hmu-admin-content > .d-flex > h1.h4 {
    color: var(--hmu-xanh-dam);
    font-weight: 700;
    padding-bottom: .5rem;
    border-bottom: 2px solid #e8f4fc;
}

.hmu-admin-content > h1.h4 i,
.hmu-admin-content .page-header h1 i {
    color: var(--hmu-hong);
}

.hmu-admin-content .card.text-center.p-3,
.admin-stat-card {
    border: 1px solid var(--hmu-vien);
    border-radius: .75rem;
    padding: 1.25rem 1rem !important;
    text-align: center;
    background: #fff;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    transition: transform .15s, box-shadow .15s;
    height: 100%;
}

.hmu-admin-content .card.text-center.p-3:hover,
.admin-stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 122, 217, 0.12);
}

.hmu-admin-content .card.text-center.p-3 .fs-2,
.admin-stat-card .admin-stat-value {
    font-size: 2rem !important;
    font-weight: 700;
    line-height: 1.2;
}

.hmu-admin-content .card.text-center.p-3 .fs-2.text-success,
.admin-stat-card--xanh .admin-stat-value { color: var(--hmu-xanh) !important; }
.hmu-admin-content .card.text-center.p-3 .fs-2.text-primary,
.admin-stat-card--hong .admin-stat-value { color: var(--hmu-hong) !important; }
.hmu-admin-content .card.text-center.p-3 .fs-2.text-warning,
.admin-stat-card--vang .admin-stat-value { color: #e6a817 !important; }
.hmu-admin-content .card.text-center.p-3 .fs-2.text-danger,
.admin-stat-card--do .admin-stat-value { color: #c0392b !important; }
.hmu-admin-content .card.text-center.p-3 .fs-2.text-info,
.admin-stat-card--nhat .admin-stat-value { color: #17a2b8 !important; }
.hmu-admin-content .card.text-center.p-3 .fs-2.text-secondary,
.admin-stat-card--xam .admin-stat-value { color: #6c757d !important; }

.admin-stat-card .admin-stat-label,
.hmu-admin-content .card.text-center.p-3 .small {
    font-size: .78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .03em;
    color: var(--hmu-chu-phu);
    margin-top: .25rem;
}

.hmu-admin-content .table-responsive {
    border-radius: .75rem;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--hmu-vien);
    margin-bottom: 1rem;
}

.hmu-admin-content .table thead th,
.hmu-admin-content .table thead.table-light th {
    background: linear-gradient(135deg, var(--hmu-xanh), var(--hmu-xanh-dam));
    color: #fff;
    font-weight: 600;
    font-size: .78rem;
    border: none;
    padding: .7rem 1rem;
}

.hmu-admin-content .table tbody td {
    padding: .65rem 1rem;
    vertical-align: middle;
    border-color: #eef2f6;
    font-size: .88rem;
}

.hmu-admin-content .table-hover tbody tr:hover {
    background: #f0f7fd;
}

.hmu-admin-content > .card,
.hmu-admin-content .card:not(.text-center) {
    border: 1px solid var(--hmu-vien);
    border-radius: .75rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

.hmu-admin-content .card-header {
    background: linear-gradient(135deg, var(--hmu-xanh), var(--hmu-xanh-dam));
    color: #fff;
    font-weight: 600;
    border-bottom: none;
    padding: .75rem 1.15rem;
}

.hmu-admin-content .card-header:not(.card-header-hmu) {
    background: linear-gradient(135deg, var(--hmu-xanh), var(--hmu-xanh-dam));
}

.hmu-admin-content .alert {
    border-radius: .65rem;
    border: none;
}

/* Modal admin (position-fixed overlay) */
.hmu-admin-content .position-fixed.top-0.start-0.w-100.h-100 {
    background: rgba(0, 40, 80, 0.45) !important;
    backdrop-filter: blur(2px);
    z-index: 1050;
}

.hmu-admin-content .position-fixed .card {
    border-radius: .85rem;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
    border: none;
}

.hmu-admin-content .position-fixed .card-header {
    background: linear-gradient(135deg, var(--hmu-xanh), var(--hmu-xanh-dam));
    color: #fff;
}

/* Nut trong admin */
.hmu-admin-content .btn-success {
    background: var(--hmu-xanh);
    border-color: var(--hmu-xanh);
}

.hmu-admin-content .btn-success:hover {
    background: var(--hmu-xanh-dam);
    border-color: var(--hmu-xanh-dam);
}

/* Form & code */
.hmu-site code,
.hmu-admin-content code {
    background: rgba(0, 122, 217, 0.08);
    color: var(--hmu-xanh-dam);
    padding: .1rem .35rem;
    border-radius: .25rem;
    font-size: .82em;
}

.hmu-site .form-control:focus,
.hmu-site .form-select:focus,
.hmu-admin-content .form-control:focus,
.hmu-admin-content .form-select:focus {
    border-color: var(--hmu-xanh);
    box-shadow: 0 0 0 .2rem rgba(0, 122, 217, 0.15);
}

/* Dang nhap */
.hmu-login-card .card-body h2 i {
    color: var(--hmu-hong);
}

.hmu-login-card .btn-primary {
    padding: .6rem;
    font-weight: 600;
}