@import "./styles.css";

@font-face {
    font-family: "LXGW 975 Yuan SC";
    src: local("LXGW 975 Yuan SC"), url("../assets/fonts/LXGW975YuanSC-400W.woff2") format("woff2");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: "LXGW 975 Yuan SC";
    src: url("../assets/fonts/LXGW975YuanSC-700W.woff2") format("woff2");
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}


:root {
    font-size: 90%;
    --h-title-color: #453662;
    --bs-body-color: #656d76;
    --bs-body-font-family: "LXGW 975 Yuan SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --heading-font: "Avenir Next", Avenir, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --serif-font: Palatino, "Palatino Linotype", "Book Antiqua", serif;
    --bs-body-font-weight: 300;
    --body-weight: 300;
    --bs-link-color: #3d6da6;
    --bs-link-hover-color: #42658a;
    --top-section-overlay: 0.52;
    --skeleton-base: #e6e8e8;
    --skeleton-highlight: #f6f8fa;
}

/* Alternate previews use installed fonts; the default body font is bundled under OFL. */
:root[data-body="helvetica"] {
    --bs-body-font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
:root[data-body="system"] {
    --bs-body-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
:root[data-heading="helvetica"] {
    --heading-font: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
:root[data-heading="palatino"] {
    --heading-font: var(--serif-font);
}
h1, h2, h3, h4, h5, h6 {
    font-family: var(--serif-font);
}
.top-section h2.font-alt {
    font-family: var(--heading-font) !important;
}
#sections small {
    color: #656d76;
}

/* Colors sampled from local GitHub Light Default + user overrides; see PALETTE.md. */
#sections strong { font-weight: 600; color: #453662; }
#home-md > p:first-child strong, #publications-md .author-self { color: #8d74bb; }
#sections header h2 { font-weight: 650; }
#sections header h2 i { color: #ae96d8; margin-right: 1.1rem; }
#home-md, #publications-md, #awards-md, #misc-md { padding-left: 3.4rem; }
.profile-links { display: flex; flex-wrap: wrap; gap: 1.2rem 3rem; margin: .65rem 0 3.5rem; }
.profile-links a { display: inline-flex; align-items: center; gap: .9rem; text-decoration: none; font-weight: 400; }
.profile-links a:hover { color: #42658a; }
.profile-links svg, .subsection-title svg { width: 1.5rem; height: 1.5rem; flex: none; color: #8d74bb; }
#sections .subsection-title { position: relative; font-family: var(--heading-font); font-weight: 600; color: #453662; margin: 3.5rem 0 1.8rem; }
.subsection-title svg { position: absolute; left: -3.4rem; top: .2rem; }
.timeline-entry { position: relative; padding-left: 8rem; min-height: 4rem; margin: 0 0 2.2rem; }
.timeline-entry:has(.institution-logos > :nth-child(2)) { min-height: 7.5rem; }
.institution-mark { display: block; width: 5rem; height: 3.2rem; margin: auto; overflow: hidden; }
.institution-logos .institution-mark img { width: 100%; height: auto; }
.institution-logos { position: absolute; left: 0; top: .2rem; width: 5rem; display: grid; gap: .7rem; }
.institution-logos img { display: block; width: 100%; height: 3.2rem; object-fit: contain; }
.timeline-entry::before { content: ""; position: absolute; left: 6rem; top: .2rem; bottom: .2rem; width: 4px; border-radius: 4px; background: #ae96d8; }
.timeline-entry:nth-child(even)::before { background: #588dc8; opacity: .55; }
.research .timeline-entry::before { background: #4f808c; opacity: .55; }
.timeline-entry > strong { display: block; }
.timeline-entry p { margin: .15rem 0 0; }
#publications-md li::marker, #awards-md li::marker { color: #ae96d8; }
#publications-md li { margin-bottom: 1.5rem; }
#publications-md h4 { font-family: var(--heading-font); font-weight: 600; }
@media (max-width: 575px) {
    #home-md, #publications-md, #awards-md, #misc-md { padding-left: 0; }
    #sections .subsection-title { display: flex; align-items: center; gap: .9rem; }
    .subsection-title svg { position: static; }
    .timeline-entry { padding-left: 5.4rem; }
    .timeline-entry::before { left: 4.3rem; }
    .institution-logos { width: 3.3rem; }
    .institution-logos img { height: 2.8rem; }
    .institution-mark { width: 3.3rem; height: 2.1rem; }
    .profile-links { gap: 1.2rem; }
}
::selection {
    background: #e6f1f6;
    color: #1f2328;
}

body {
    background: #1f2328;
    isolation: isolate;
}

.site-background {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.site-background::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(31, 35, 40, var(--top-section-overlay));
}

.page-skeleton {
    position: fixed;
    top: 25rem;
    right: max(24px, calc((100vw - 1150px) / 2));
    bottom: 0;
    left: max(24px, calc((100vw - 1150px) / 2));
    border-radius: 24px 24px 0 0;
    z-index: 8000;
    overflow: auto;
    background: #ffffff;
    opacity: 1;
    visibility: visible;
    pointer-events: none;
    padding-top: 2.4rem;
    transition: opacity 280ms ease, visibility 280ms ease;
}

.site-ready .page-skeleton {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.skeleton-block {
    position: relative;
    overflow: hidden;
    max-width: 100%;
    border-radius: 4px;
    background: var(--skeleton-base);
}

.skeleton-block::after {
    content: "";
    position: absolute;
    inset: 0;
    transform: translateX(-100%);
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.58), transparent);
    animation: skeleton-shimmer 1450ms ease-in-out infinite;
}

.skeleton-section {
    padding: 4rem 0;
}

.skeleton-section-light {
    background: linear-gradient(45deg, #ffffff, #ffffff);
}

.skeleton-section-gray {
    background: linear-gradient(45deg, #ebecf0, #f3f4f6);
}

.skeleton-section-title {
    width: 42%;
    height: 2rem;
    margin-bottom: 2rem;
}

.skeleton-line {
    height: 1.1rem;
    margin-bottom: 1rem;
}

.skeleton-line-long {
    width: 100%;
}

.skeleton-line:not(.skeleton-line-long):not(.skeleton-line-short) {
    width: 88%;
}

.skeleton-line-short {
    width: 68%;
}

@keyframes skeleton-shimmer {
    100% {
        transform: translateX(100%);
    }
}

.bg-bottom {
    background: transparent;
}

.bg-bottom .text-white-50,
.bg-bottom a {
    color: rgba(255, 255, 255, 0.85) !important;
}

.top-section {
    position: relative;
    padding: 10rem 0;
    height: 25rem;
    overflow: hidden;
    background: transparent;
}

.site-loading .top-section {
    background:
        linear-gradient(90deg, rgba(255, 255, 255, 0.12), rgba(230, 232, 232, 0.16)),
        linear-gradient(135deg, #eaeef2, #f7f8f9);
}

.top-section h2 {
    font-weight: 400;
    font-size: clamp(2.4rem, 4.05vw, 3.6rem);
    text-shadow: 0 2px 18px rgba(0, 0, 0, 0.25);
}

.top-section .top-section-content {
    position: relative;
    z-index: 2;
}

.top-section-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background-position: center;
    background-size: cover;
    opacity: 0;
    transform: scale(1.03);
    transition: opacity 1200ms ease, transform 7000ms ease;
}

.top-section-bg-active {
    opacity: 1;
    transform: scale(1);
}

.top-section:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: transparent;
}

.site-loading .top-section:before {
    background:
        linear-gradient(90deg, rgba(255, 255, 255, 0.24), rgba(220, 227, 233, 0.2)),
        linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(220, 227, 233, 0.16));
}

.site-loading .top-section::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    transform: translateX(-100%);
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: skeleton-shimmer 1450ms ease-in-out infinite;
}

section header h2 {
    font-family: var(--heading-font);
    color: var(--h-title-color);
    font-size: 2.3rem;
    line-height: 4rem;
}

section .main-body {
    font-size: 1.3rem;
    font-weight: var(--body-weight);
    line-height: 2.4rem;
    text-align: left;
}

/* Content column: 80% of the viewport on large screens (10% whitespace
   each side), capped at 1200px for readability on very wide screens.
   Bootstrap's own caps are 960/1140/1320px at lg/xl/xxl. */
@media (min-width: 992px) {
    .container {
        max-width: min(1150px, 80vw);
    }
}


.bg-gradient-primary-to-secondary-light {
    background: transparent !important;
}

.bg-gradient-primary-to-secondary-gray {
    background: transparent !important;
}

#sections {
    width: calc(100% - 48px);
    max-width: 1150px;
    margin: 0 auto;
    background: #ffffff;
    border: 1px solid #d0d7de;
    border-radius: 24px;
    box-shadow: 0 24px 80px rgba(31, 35, 40, 0.28);
}

#sections > section {
    padding: 3rem 0;
    scroll-margin-top: 24px;
}

#sections > section + section {
    border-top: 1px solid #d0d7de;
}

#sections .container {
    max-width: 100%;
}


.on-top {
    position: relative;
    z-index: 10000;
}

.top-bg {
    background-position: center;
    background-size: cover;
    width: 100%;
    height: 100%;
}

.top-bg::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
}


#avatar {
    position: relative;
    height: 0;
    top: -170px;
    max-width: 55em;
    margin: 0 1.5rem 0 0;
    float: right;
    z-index: 9000;
}

#avatar img {
    width: min(180px, max(130px, calc(100vw / 6)));
    height: auto;
    border: 5px solid rgba(255, 255, 255, 0.96);
    border-radius: 14px;
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.2);
}

@media screen and (max-width: 991px) {
    #avatar {
        margin: 0;
    }
}

/* Keep longer biographies and paper titles readable on phones. */
@media (max-width: 575px) {
    .top-section {
        padding-top: 8rem;
    }

    #avatar {
        top: -150px;
    }

    #sections {
        width: calc(100% - 24px);
        border-radius: 18px;
    }

    #sections > section {
        padding: 2.5rem 0;
    }

    .page-skeleton {
        left: 12px;
        right: 12px;
    }

    .container.px-5 {
        padding-right: 1.5rem !important;
        padding-left: 1.5rem !important;
    }

    section .main-body {
        font-size: 1.05rem;
        line-height: 1.85rem;
        text-align: left;
        overflow-wrap: break-word;
    }

    section header h2 {
        font-size: 1.85rem;
        line-height: 2.8rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .top-section-bg {
        transition: none;
        transform: none;
    }

    .page-skeleton {
        transition: none;
    }

    .skeleton-block::after {
        animation: none;
    }
}

/* Display the original-color institute emblems from their full source images. */
.iiis-mark { display: block; width: 3.55rem; height: 3.2rem; margin: auto; overflow: hidden; }
.institution-logos .iiis-mark img { width: auto; max-width: none; height: 100%; transform: translateX(-.65rem); }
.nlp-mark { display: block; width: 3.2rem; margin: auto; border-radius: .3rem; overflow: hidden; }
.institution-logos .nlp-mark img { width: 100%; height: auto; }
#sections h3, #sections h4, #sections h5, #sections h6 { color: var(--h-title-color); }
#home-md a { text-decoration: none; }
#home-md a:hover { color: #42658a; }
.publication-links { display: inline; margin-left: .4rem; }
.publication-links a { display: inline-flex; align-items: center; vertical-align: baseline; margin: .1rem .3rem .1rem 0; white-space: nowrap; padding: .12rem .7rem; border: 1px solid #d0d7de; border-radius: 6px; background: #f7f8f9; color: #3d6da6; font-size: .86em; font-weight: 400; line-height: 1.7; text-decoration: none; }
.publication-links a:hover { background: #e6f1f6; border-color: #3d6da6; }
.publication-links .news-link { color: #796393; }
.publication-links .news-link:hover { border-color: #796393; }
.publication-links .citation-highlight { color: #a44d53; background: #f2dad84d; border-color: #e0a0a166; font-weight: 600; }
.publication-links .citation-highlight:hover { background: #f2dad8; border-color: #a44d53; }
.award-highlight { color: #a44d53; font-weight: 600; }
#sections a:focus-visible { outline: 2px solid #3d6da6; outline-offset: 3px; border-radius: 4px; }
@media (max-width: 575px) {
    .iiis-mark { width: 2.7rem; height: 2.4rem; }
    .institution-logos .iiis-mark img { transform: translateX(-.45rem); }
}

/* Small full-screen introduction while the first background and text are prepared. */
#site-loader { position: fixed; inset: 0; z-index: 20000; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1rem; background: #f7f8f9; color: #453662; font: 500 1.15rem var(--heading-font); transition: opacity .35s ease, visibility .35s; }
#site-loader small { color: #656d76; font-size: .75rem; letter-spacing: .12em; }
.loader-ring { width: 2rem; height: 2rem; border: 2px solid #e6e8e8; border-top-color: #8d74bb; border-radius: 50%; animation: loader-spin 1s linear infinite; }
.site-loading { overflow: hidden; }
.site-loading #page-skeleton { display: none; }
.site-ready #site-loader { opacity: 0; visibility: hidden; pointer-events: none; }
@keyframes loader-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .loader-ring { animation: none; } #site-loader { transition: none; } }