/* USTC Blue Theme Color Overrides */
:root,
[data-bs-theme="light"] {
    --bs-primary: #003a8c;
    --bs-secondary: #5b8dd9;
    --bs-primary-rgb: 0, 58, 140;
    --bs-secondary-rgb: 91, 141, 217;
    --bs-link-color: #003a8c;
    --bs-link-color-rgb: 0, 58, 140;
    --bs-link-hover-color: #002d6d;
    --bs-link-hover-color-rgb: 0, 45, 109;
    --bs-primary-text-emphasis: #001736;
    --bs-primary-bg-subtle: #ccd9ed;
    --bs-primary-border-subtle: #99b3db;
}

[data-bs-theme="dark"] {
    --bs-primary-text-emphasis: #6699cc;
    --bs-primary-bg-subtle: #000e1c;
    --bs-primary-border-subtle: #002354;
}

/* Override button colors */
.btn-primary {
    --bs-btn-bg: #003a8c;
    --bs-btn-border-color: #003a8c;
    --bs-btn-hover-bg: #002d6d;
    --bs-btn-hover-border-color: #002866;
    --bs-btn-active-bg: #002866;
    --bs-btn-active-border-color: #00245c;
    --bs-btn-disabled-bg: #003a8c;
    --bs-btn-disabled-border-color: #003a8c;
}

/* Override navbar background */
.navbar.bg-primary {
    background-color: #003a8c !important;
}

/* Override form focus colors */
.form-control:focus,
.form-select:focus,
.form-check-input:focus {
    border-color: #003a8c;
    box-shadow: 0 0 0 0.25rem rgba(0, 58, 140, 0.25);
}

.form-check-input:checked {
    background-color: #003a8c;
    border-color: #003a8c;
}

/* Override badge colors */
.badge.bg-primary {
    background-color: #003a8c !important;
}

.badge.bg-info {
    background-color: #005bac !important;
}

/* Override nav-pills active state */
.nav-pills {
    --bs-nav-pills-link-active-bg: #003a8c;
}

.nav-pills .nav-link.active,
.nav-pills .show > .nav-link {
    background-color: #003a8c !important;
}

/* Override nav-tabs */
.nav-tabs {
    --bs-nav-tabs-link-hover-border-color: #003a8c;
}

/* Override dropdown colors */
.dropdown-menu {
    --bs-dropdown-link-hover-bg: #003a8c;
    --bs-dropdown-link-active-bg: #003a8c;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: #003a8c;
    color: #fff;
}

.dropdown-item.active,
.dropdown-item:active {
    background-color: #003a8c;
}

/* Override pagination */
.pagination {
    --bs-pagination-active-bg: #003a8c;
    --bs-pagination-active-border-color: #003a8c;
}

.page-link:hover {
    color: #003a8c;
}

.page-item.active .page-link {
    background-color: #003a8c;
    border-color: #003a8c;
}

/* Override progress bar */
.progress {
    --bs-progress-bar-bg: #003a8c;
}

/* Override accordion */
.accordion {
    --bs-accordion-btn-focus-border-color: #003a8c;
}

.accordion-button:not(.collapsed) {
    color: #003a8c;
    background-color: #ccd9ed;
}

/* Override outline buttons */
.btn-outline-primary {
    --bs-btn-color: #003a8c;
    --bs-btn-border-color: #003a8c;
    --bs-btn-hover-bg: #003a8c;
    --bs-btn-hover-border-color: #003a8c;
    --bs-btn-active-bg: #003a8c;
    --bs-btn-active-border-color: #003a8c;
    --bs-btn-disabled-color: #003a8c;
    --bs-btn-disabled-border-color: #003a8c;
}

/* Override list-group */
.list-group-item.active {
    background-color: #003a8c;
    border-color: #003a8c;
}

/* Override links */
a {
    color: #003a8c;
}

a:hover {
    color: #002d6d;
}

/* Language Switcher Styles */
.navbar-nav .nav-item.dropdown #langDropdown {
    padding: 0.5rem 0.75rem;
}

.navbar-nav .nav-item.dropdown #langDropdown .bi-globe {
    font-size: 1.1rem;
    margin-right: 0.25rem;
}

.dropdown-menu[aria-labelledby="langDropdown"] {
    min-width: 120px;
}

.dropdown-menu[aria-labelledby="langDropdown"] .dropdown-item {
    padding: 0.5rem 1rem;
}

.dropdown-menu[aria-labelledby="langDropdown"] .dropdown-item:hover {
    background-color: #003a8c;
    color: #fff;
}

.dropdown-menu[aria-labelledby="langDropdown"] .dropdown-item.active {
    background-color: #003a8c;
}

/* Language flag icons - using text fallback */
.lang-icon {
    display: inline-block;
    width: 20px;
    height: 14px;
    margin-right: 8px;
    vertical-align: middle;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.lang-icon-en {
    background-color: #012169;
    position: relative;
}

.lang-icon-zh {
    background-color: #de2910;
    position: relative;
}

/* Publication page styles */

.pub-category-title {
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pub-category-title h4 {
    margin: 0;
    font-weight: 600;
}

.pub-year-header {
    background: linear-gradient(135deg, #5b8dd9 0%, #7aa3e0 100%) !important;
    color: #fff !important;
    border: none !important;
    padding: 0.4rem 1rem !important;
    margin-top: 0.8rem;
}

.pub-year-text {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.sec_publish .list-group {
    margin-bottom: 0;
}

.sec_publish .list-group-item.btn-secondary {
    background-color: #f8f9fa;
    border-left: 3px solid #5b8dd9;
    margin-bottom: 2px;
}

.sec_publish .list-group-item.btn-secondary:hover {
    background-color: #e9ecef;
}

body {
    padding-top: 120px;
}
iframe {
    overflow: hidden;
    border: none;
}
.navbar .bi {
    margin-right: 0.25rem;
    font-size: 1rem;
}
#home .navbar,
#help .navbar {
    background: linear-gradient(145deg, #003a8c 0%, #005bac 80%);
}
#home .navbar-brand .nav-link,
#help .navbar-brand .nav-link {
    display: inline-block;
    margin-right: -30px;
}
#home {
    padding-top: 0;
}
#home .btn {
    padding: 0.5rem 0.9rem;
}
.bs-docs-section {
    margin-top: 4em;
}
.bs-docs-section .page-header h1 {
    padding: 2rem 0;
    font-size: 3rem;
}
.dropdown-menu.show[aria-labelledby="themes"] {
    display: flex;
    flex-wrap: wrap;
    width: 420px;
}
.dropdown-menu.show[aria-labelledby="themes"] .dropdown-item {
    width: 33.333333%;
}
.dropdown-menu.show[aria-labelledby="themes"] .dropdown-item:first-child {
    width: 100%;
}
.bs-component {
    position: relative;
}
.bs-component + .bs-component {
    margin-top: 1rem;
}
.bs-component .card {
    margin-bottom: 1rem;
}
.bs-component .modal {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    z-index: 1;
    display: block;
}
.bs-component .modal-dialog {
    width: 90%;
}
.bs-component .popover {
    position: relative;
    display: inline-block;
    width: 220px;
    margin: 20px;
}
.source-button {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 100;
    display: none;
    font-weight: 700;
}
.source-button i {
    pointer-events: none;
}
.source-button:hover {
    cursor: pointer;
}
.bs-component:hover .source-button {
    display: block;
}
#source-modal pre {
    max-height: calc(100vh - 11rem);
}
.progress {
    margin-bottom: 10px;
}
#footer {
    margin: 5em 0;
}
#footer li {
    float: left;
    margin-right: 1.5em;
    margin-bottom: 1.5em;
}
#footer p {
    margin-bottom: 0;
    clear: left;
}
.splash {
    position: relative;
    padding: 12em 0 6em;
    color: #fff;
    text-align: center;
    background-color: #003a8c;
    background-image:
        url("../img/splash.svg"),
        linear-gradient(145deg, #003a8c 0%, #005bac 80%);
    background-repeat: no-repeat;
    background-size: cover;
}
.splash .logo {
    width: 160px;
}
.splash h1 {
    font-size: 3em;
    color: #fff;
}
.splash #social {
    margin: 2em 0 3em;
}
.splash .alert {
    margin: 2em 0;
    border: none;
}
.splash .sponsor a {
    color: #fff;
}
.section-tout {
    padding: 6em 0 1em;
    text-align: center;
    background-color: #eaf1f1;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}
.section-tout .icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    font-size: 2rem;
    line-height: 1;
    color: rgba(255, 255, 255, 0.9);
    background: linear-gradient(145deg, #003a8c 0%, #005bac 80%);
    border-radius: 50%;
}
.section-tout p {
    margin-bottom: 5em;
}
.section-preview {
    padding: 4em 0;
}
.section-preview .preview {
    margin-bottom: 4em;
    background-color: #eaf1f1;
}
.section-preview .preview .image {
    position: relative;
}
.section-preview .preview .image img {
    width: 100%;
    height: auto;
}
.section-preview .preview .options {
    padding: 2em;
    text-align: center;
    border-top: 1px solid rgba(0, 0, 0, 0.125);
}
.section-preview .preview .options p {
    margin-bottom: 2em;
}
.section-preview .dropdown-menu {
    text-align: left;
}
.section-preview .lead {
    margin-bottom: 2em;
}
.sponsor a {
    text-decoration: none;
}
.sponsor #carbonads {
    max-width: 240px;
    margin: 0 auto;
}
.sponsor .carbon-text {
    display: block;
    margin-top: 1em;
    font-size: 12px;
}
.sponsor .carbon-poweredby {
    float: right;
    margin-top: 1em;
    font-size: 10px;
}
[data-bs-theme="dark"] .section-tout {
    background-color: #111;
}
[data-bs-theme="dark"] .section-preview .preview {
    background-color: #2b3036;
}
@media (max-width: 767px) {
    .splash {
        padding-top: 8em;
    }
    .splash .logo {
        width: 100px;
    }
    .splash h1 {
        font-size: 2em;
    }
    #banner {
        margin-bottom: 2em;
        text-align: center;
    }
}
@media (min-width: 992px) {
    .navbar-transparent {
        background: none !important;
    }
}
.bs-component > .btn,
.bs-component > .btn-toolbar > .btn-group,
.bs-component > .btn-group,
#home .section-preview .card .btn-group {
    margin-bottom: 0.25rem;
}

/* my settings */

/*  the second nav bar, below the first nav bar */
nav.navbar2 {
    position: fixed;
    top: 70px;
    width: 100%;
    z-index: 10;
}

.fixed-top-2 {
    margin-top: 56px;
}

body {
    padding-top: 105px;
}

.dropdown .dropdown-menu {
    border-radius: 0;
}

/* Medium devices (tablets, 768px and up)
The navbar toggle appears at this breakpoint */
@media (min-width: 768px) {
    .dropdown:hover .dropdown-menu {
        display: block;
        margin-top: 0;
        border-radius: 0;
    }
}

/* for publish page */
.sec_publish {
    padding-top: 40px;
}

.anchor_pub {
    position: absolute;
    transform: translateY(-50vh);
}

a {
    text-decoration: none;
} /*remove the underline of a link*/

.news-img {
    /* transform: scale(0.85, 0.85); */
    filter: drop-shadow(3px 3px 5px black);
}

/*  for code box setting */
pre[class*="language-"],
code[class*="language-"] {
    white-space: break-spaces;
}