/* Modern & Bold Design - Scholar Homepage */

:root {
    --primary-color: #003366; /* Deep Navy Blue */
    --secondary-color: #1a73e8; /* Bold Blue */
    --accent-color: #ff5722; /* Vibrant Orange for Buttons/Highlights */
    --text-color: #333333; /* Dark Grey for Text */
    --light-bg: #f5f7fa; /* Light Grey Background */
    --white: #ffffff;
    --border-color: #e0e0e0;
    --font-heading: 'Roboto', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    --shadow-soft: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-medium: 0 6px 12px rgba(0,0,0,0.15);
    --pub-border: #e2e6ec;
    --pub-meta-bg: #f0f3f8;
    --pub-award-edge: #b8941e;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-color);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

h2 {
    font-size: 2rem;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 10px;
    margin-top: 2rem;
    margin-bottom: 1.5rem;
    display: inline-block;
}

/* Header & Navigation */
header {
    background-color: var(--white);
    box-shadow: var(--shadow-soft);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.new-badge {
  background-color: var(--accent-color);
  color: white;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: bold;
  vertical-align: super;
  margin-left: 4px;

}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links li a {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.1rem;
    padding-bottom: 5px;
    border-bottom: 2px solid transparent;
}

.nav-links li a:hover,
.nav-links li a.active {
    border-bottom-color: var(--accent-color);
}

/* Homepage profile / portrait — aligned with site cards & container */
.hero.hero--profile {
    background: linear-gradient(180deg, var(--light-bg) 0%, var(--white) 45%);
    border-bottom: 1px solid var(--pub-border);
    padding: 2.35rem 0 2.6rem;
}

.hero.hero--profile .hero__container {
    padding-top: 0;
    padding-bottom: 0;
}

.hero__layout {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.65rem;
    text-align: center;
}

@media (min-width: 900px) {
    .hero__layout {
        display: grid;
        grid-template-columns: auto 1fr;
        align-items: stretch;
        text-align: left;
        gap: 2.35rem;
    }
}

.hero__figure {
    margin: 0;
    flex-shrink: 0;
}

@media (min-width: 900px) {
    .hero__figure {
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

.hero__frame {
    padding: 5px;
    background: var(--white);
    border-radius: 11px;
    border: 1px solid var(--pub-border);
    box-shadow: 0 2px 12px rgba(0, 51, 102, 0.07), 0 1px 3px rgba(0, 0, 0, 0.04);
}

.hero__photo {
    display: block;
    width: min(252px, 85vw);
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 8px;
}

@media (min-width: 900px) {
    .hero__photo {
        width: 278px;
    }
}

.hero__body {
    flex: 1;
    min-width: 0;
    max-width: 40rem;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 1.25rem;
}

@media (min-width: 900px) {
    .hero__body {
        max-width: none;
        padding-top: 0.25rem;
        align-self: stretch;
        height: 100%;
        min-height: 0;
        justify-content: space-between;
        gap: 1.5rem;
    }
}

.hero__top {
    flex-shrink: 0;
}

.hero__bottom {
    flex-shrink: 0;
}

.hero__body h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4.5vw, 2.85rem);
    font-weight: 700;
    color: var(--primary-color);
    margin: 0 0 0.45rem;
    line-height: 1.12;
    letter-spacing: -0.02em;
}

.hero__role-line {
    font-family: var(--font-heading);
    font-size: 1.22rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin: 0 0 0.65rem;
    line-height: 1.35;
}

.hero__meta-block {
    display: grid;
    grid-template-columns: minmax(4.75rem, 6.5rem) 1fr;
    column-gap: 0.9rem;
    row-gap: 0.35rem;
    align-items: baseline;
    width: 100%;
    text-align: left;
}

.hero__profile-links {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-start;
    gap: 0.45rem 0.55rem;
    margin: 0.5rem 0 0;
    font-size: 0.92rem;
    line-height: 1.45;
}

.hero__profile-link {
    display: inline-block;
    font-family: var(--font-body);
    font-size: inherit;
    font-weight: 600;
    color: var(--secondary-color);
    text-decoration: none;
    padding: 0.35rem 0.8rem;
    background: var(--white);
    border: 1px solid var(--pub-border);
    border-radius: 6px;
    box-shadow: 0 1px 2px rgba(0, 51, 102, 0.05);
    transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.hero__profile-link:hover {
    color: var(--primary-color);
    border-color: rgba(26, 115, 232, 0.45);
    box-shadow: 0 2px 6px rgba(0, 51, 102, 0.08);
}

.hero__affiliation {
    font-size: 1.1rem;
    line-height: 1.55;
    color: #3d4754;
    margin: 0;
}

.hero__affiliation-link {
    color: var(--secondary-color);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.hero__affiliation-link:hover {
    color: var(--accent-color);
    border-bottom-color: rgba(255, 87, 34, 0.4);
}

.hero__meta-block .hero__value {
    font-size: 0.98rem;
    line-height: 1.48;
}

.hero__label {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero__value {
    color: #3d4754;
}

.hero__value a {
    font-weight: 600;
}

@media (max-width: 520px) {
    .hero__meta-block {
        grid-template-columns: 1fr;
        row-gap: 0.12rem;
    }
}

.btn {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--secondary-color);
    color: var(--white);
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.9rem;
}

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

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
}

.btn-outline:hover {
    background-color: var(--secondary-color);
    color: var(--white);
}

/* Main Content Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 2rem;
}

/* Sections */
.section {
    margin-bottom: 4rem;
}

/* News Section */
.news-list {
    list-style: none;
}

.news-item {
    padding: 1rem;
    border-left: 4px solid var(--secondary-color);
    background-color: var(--white);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-soft);
    border-radius: 0 4px 4px 0;
    transition: transform 0.2s;
}

.news-item:hover {
    transform: translateX(5px);
}

.news-date {
    font-weight: 700;
    color: var(--accent-color);
    margin-right: 10px;
    display: block;
    margin-bottom: 5px;
}

/* Publication List */
.publication-list {
    list-style: none;
}

/* Optional acceptance / award spans */
.pub-meta:not(:has(.pub-accept-rate:not(:empty))):not(:has(.pub-award:not(:empty))) {
    display: none;
}

.pub-accept-rate:empty,
.pub-award:empty {
    display: none;
}

.pub-badge {
    display: inline-block;
    background-color: var(--accent-color);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-right: 8px;
    margin-bottom: 4px;
}

.award-badge,
.pub-award:not(:empty) {
    display: inline-block;
    background-color: #e8c547;
    color: #2b2205;
    padding: 1px 7px;
    border-radius: 3px;
    font-size: 0.7rem;
    font-weight: 700;
    line-height: 1.35;
}

/* --- Publications page: three-band card (meta strip / body / venue+links) --- */
.publication-item:has(.pub-main) {
    padding: 0;
    margin-bottom: 0.7rem;
    border-radius: 6px;
    border: 1px solid var(--pub-border);
    box-shadow: 0 1px 2px rgba(0, 51, 102, 0.05);
    overflow: hidden;
    background-color: var(--white);
    position: relative;
}

.publication-item:has(.pub-main):hover {
    box-shadow: 0 2px 10px rgba(0, 51, 102, 0.07);
}

.publication-item:has(.pub-main) .pub-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem 0.6rem;
    padding: 0.32rem 0.7rem;
    margin: 0;
    line-height: 1.3;
    background: var(--pub-meta-bg);
    border-bottom: 1px solid var(--pub-border);
}

.publication-item:has(.pub-main) .pub-head .pub-badge {
    margin: 0;
    flex-shrink: 0;
    padding: 1px 7px;
    font-size: 0.72rem;
    letter-spacing: 0.02em;
    border-radius: 3px;
}

.publication-item:has(.pub-main) .pub-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 0.45rem;
    align-items: center;
    margin: 0;
}

.publication-item:has(.pub-main) .pub-accept-rate:not(:empty) {
    font-size: 0.72rem;
    color: #5a6470;
    line-height: 1.3;
}

.publication-item:has(.pub-main) .pub-award:not(:empty) {
    font-size: 0.68rem;
    padding: 1px 6px;
}

.publication-item:has(.pub-main) .pub-main {
    padding: 0.45rem 0.7rem 0.3rem;
}

.publication-item:has(.pub-main) .pub-title {
    font-size: 1.02rem;
    font-weight: 700;
    line-height: 1.32;
    margin: 0 0 0.22rem 0;
    display: block;
    color: var(--primary-color);
}

.publication-item:has(.pub-main) .pub-authors {
    font-size: 0.86rem;
    line-height: 1.42;
    color: #4a5568;
    font-style: normal;
    margin: 0;
    display: block;
}

.publication-item:has(.pub-main) .pub-foot {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.3rem 1rem;
    padding: 0.35rem 0.7rem 0.5rem;
    border-top: 1px solid #eef1f5;
}

.publication-item:has(.pub-main) .pub-venue {
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin: 0;
    flex: 1 1 10rem;
    min-width: 0;
    line-height: 1.35;
    display: block;
}

.publication-item:has(.pub-main) .pub-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem 0.55rem;
    margin: 0;
    flex-shrink: 0;
}

.publication-item:has(.pub-main) .pub-links a {
    margin: 0;
    font-size: 0.76rem;
    font-weight: 600;
    white-space: nowrap;
}

.publication-item:has(.pub-main):has(.pub-award:not(:empty)) {
    border-left: 3px solid var(--pub-award-edge);
}

.publication-item:has(.pub-main):has(.pub-award:not(:empty)) .pub-head {
    background: linear-gradient(90deg, rgba(184, 148, 30, 0.1) 0%, var(--pub-meta-bg) 45%);
}

/* --- Home & other pages: simple stacked card (no .pub-main) --- */
.publication-item:not(:has(.pub-main)) {
    background-color: var(--white);
    padding: 1rem 1.2rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    box-shadow: var(--shadow-soft);
    position: relative;
}

.publication-item:not(:has(.pub-main)) .pub-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
    display: block;
    color: var(--primary-color);
}

.publication-item:not(:has(.pub-main)) .pub-authors {
    font-style: italic;
    color: #555;
    margin-bottom: 8px;
    display: block;
}

.publication-item:not(:has(.pub-main)) .pub-links a {
    margin-right: 10px;
    font-size: 0.9rem;
    font-weight: 600;
}

.publication-item:not(:has(.pub-main)):has(.pub-award:not(:empty)),
.publication-item:not(:has(.pub-main)):has(.award-badge) {
    border-left: 3px solid var(--pub-award-edge);
    background: linear-gradient(to right, rgba(184, 148, 30, 0.06), transparent 10rem);
}

/* Publications page — year jump navigation */
@media (prefers-reduced-motion: no-preference) {
    html:has(body.page-publications) {
        scroll-behavior: smooth;
    }
}

.pub-year-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem 0.5rem;
    margin: 0 0 1.1rem 0;
    padding: 0 0 0.65rem 0;
    border-bottom: 1px solid var(--pub-border);
}

.pub-year-nav a {
    font-family: var(--font-heading);
    font-size: 0.82rem;
    font-weight: 600;
    padding: 0.28rem 0.7rem;
    border-radius: 4px;
    background-color: var(--white);
    border: 1px solid var(--pub-border);
    color: var(--primary-color);
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.pub-year-nav a:hover {
    background-color: var(--pub-meta-bg);
    border-color: var(--secondary-color);
    color: var(--secondary-color);
}

.publication-list > li.publication-item[id] {
    scroll-margin-top: 5.5rem;
}

@media (max-width: 768px) {
    .pub-year-nav {
        flex-wrap: nowrap;
        overflow-x: auto;
        overflow-y: hidden;
        gap: 0.35rem;
        padding-bottom: 0.5rem;
        margin-bottom: 0.85rem;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
    }

    .pub-year-nav a {
        flex-shrink: 0;
    }
}

/* --- Cross-page consistency (home, teaching, group, featured markers) --- */
.name-chinese {
    font-size: 0.9em;
    color: #555;
    font-weight: 400;
}

.text-link-inherit {
    color: inherit;
}

.text-link-inherit:hover {
    color: var(--secondary-color);
}

.callout {
    padding: 1.15rem 1.35rem;
    margin-bottom: 2rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow-soft);
}

.callout--neutral {
    background: linear-gradient(to right, #eef2f7 0%, var(--white) 72%);
    border-left-color: var(--primary-color);
}

.callout__title {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 0.65rem;
    font-size: 1.2rem;
}

.callout--accent {
    background: linear-gradient(to right, #fff6ec 0%, var(--white) 68%);
    border-left: 4px solid var(--accent-color);
    padding: 1.25rem 1.35rem;
}

.callout__lead {
    font-size: 1.05rem;
    color: var(--text-color);
    margin-bottom: 0.75rem;
}

.callout__footer {
    margin: 0;
    font-size: 0.95rem;
}

.callout__footer a {
    font-weight: 600;
}

/* Homepage — highlighted prospective-students banner */
.callout--prospective {
    position: relative;
    margin-bottom: 2.5rem;
    padding: 1.4rem 1.5rem 1.35rem;
    border: 1px solid rgba(255, 87, 34, 0.22);
    border-left: 5px solid var(--accent-color);
    border-radius: 10px;
    background: linear-gradient(145deg, #fff9f6 0%, #f3f7fd 42%, var(--white) 100%);
    box-shadow:
        0 4px 24px rgba(0, 51, 102, 0.09),
        0 0 0 1px rgba(26, 115, 232, 0.06);
    overflow: hidden;
}

.callout--prospective::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--secondary-color));
    border-radius: 10px 10px 0 0;
}

.callout__title--prospective {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0 0 0.85rem 0;
    letter-spacing: -0.02em;
}

.callout--prospective .callout__text {
    margin: 0;
    font-size: 1.03rem;
    line-height: 1.72;
    color: #3d4754;
    max-width: none;
    text-align: justify;
    text-justify: inter-word;
    hyphens: auto;
    -webkit-hyphens: auto;
}

.callout--prospective .callout__text strong {
    color: var(--primary-color);
}

.callout--prospective .callout__text a {
    font-weight: 600;
}

/* Homepage — About Me typography (full container width like other sections) */
.about--home .about__content {
    width: 100%;
    max-width: none;
    color: #3d4754;
}

.about--home .about__content p {
    margin: 0 0 1.05rem 0;
    font-size: 1.03rem;
    line-height: 1.72;
    text-align: justify;
    text-justify: inter-word;
    hyphens: auto;
    -webkit-hyphens: auto;
}

.about--home .about__content p:last-child {
    margin-bottom: 0;
}

.about--home .about__lead {
    font-size: 1.14rem;
    line-height: 1.68;
    color: var(--text-color);
    margin-bottom: 1.15rem;
}

.about--home .about__subhead {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 1.85rem 0 0.9rem 0;
    padding-bottom: 0.4rem;
    border-bottom: 2px solid var(--accent-color);
    display: block;
    width: 100%;
    max-width: 100%;
    text-align: left;
}

@media (max-width: 600px) {
    .about--home .about__content p {
        text-align: left;
        hyphens: manual;
        -webkit-hyphens: manual;
    }
}

.section-more-link {
    display: inline-block;
    margin-top: 0.75rem;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--secondary-color);
}

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

.section-more-btn {
    margin-top: 0.85rem;
}

.noscript-hint {
    font-size: 0.9rem;
    color: #555;
    margin-top: 0.5rem;
}

.news-item--muted {
    border-left-color: #98a3b3;
}

.news-date--muted {
    color: #5c6b7a;
}

.section--tight {
    margin-bottom: 2.5rem;
}

footer .footer-affiliation {
    margin-top: 0.35rem;
    font-size: 0.9rem;
    opacity: 0.92;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

footer a {
    color: #a0cfff;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* Hide for now, can implement hamburger menu later */
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: var(--shadow-medium);
        padding: 1rem;
        text-align: center;
    }
    
    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: block;
        cursor: pointer;
        font-size: 1.5rem;
    }

    /* Just ensure nav items are distinct on mobile */
    .nav-links li {
        margin: 10px 0;
    }
}

@media (min-width: 769px) {
    .hamburger {
        display: none;
    }
}