:root {
    --bg: #ffffff;
    --fg: #1f2937;
    /* gray-800 */
    --heading: #0b1220;
    --muted: #6b7280;
    /* gray-500 */
    --brand: #4f46e5;
    /* indigo-600 */
    --brand-700: #4338ca;
    --border: rgba(0, 0, 0, 0.08);
    --radius: 10px;
    --font-serif: "Libre Baskerville", Georgia, "Times New Roman", Times, serif;
    --font-sans: "Libre Franklin", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-heading: "Libre Franklin", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "CMU Typewriter Text", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;
}

[data-theme="dark"] {
    --bg: #000000;
    --fg: #ffffff;
    --heading: #ffffff;
    --muted: #cccccc;
    --brand: #60a5fa;
    --brand-700: #3b82f6;
    --border: rgba(255, 255, 255, 0.15);
}

html {
    height: 100%;
    margin: 0;
    padding: 0;
    scroll-behavior: smooth;
    background: var(--bg);
}

body {
    margin: 0;
    font-family: var(--font-serif);
    color: var(--fg);
    background: var(--bg);
    line-height: 1.7;
    font-size: 16px;
    height: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--brand);
    text-decoration: none;
    font-weight: 500;
}

a:hover {
    text-decoration: underline;
}

hr {
    border: 0;
    height: 0;
    border-top: 1px solid var(--border);
}

h1,
h2,
h3,
h4 {
    color: var(--heading);
    line-height: 1.3;
    font-family: var(--font-heading);
    letter-spacing: -0.015em;
    font-weight: 600;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-top: var(--space-6);
    border-left: 3px solid var(--brand);
    padding-left: var(--space-3);
}

h3 {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: -0.005em;
    margin-top: var(--space-5);
}

p {
    color: var(--fg);
    text-align: justify;
    text-justify: inter-word;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
}

.content,
.content p,
.content ul,
.content ol,
.content li,
.publication p,
.publication li {
    font-family: var(--font-serif);
}

code,
pre,
kbd,
samp {
    font-family: var(--font-mono);
    font-size: 0.95em;
}

/* Optional: use CMU Sans Serif like typical Beamer documents */
html.beamer body,
html.beamer h1,
html.beamer h2,
html.beamer h3,
html.beamer h4 {
    font-family: var(--font-sans);
}

#author-name {
    font-size: 26px;
    color: var(--heading);
    display: inline-block;
    font-weight: 700;
    letter-spacing: 0;
    font-family: var(--font-heading);
}

#navlist a {
    font-family: var(--font-sans);
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: none;
}

.navbar {
    padding: var(--space-6) 0;
}

.navbar-ul {
    display: inline-block;
    margin: 0 0 0 20px;
    padding: var(--space-2) 0;
}

.nav-list {
    list-style-type: none;
    margin: 0 10px;
}

.alignable,
.pull-left,
.pull-right {
    display: inline-block;
}

.pull-left {
    float: left;
}

.pull-right {
    float: right;
}

.container {
    max-width: 780px;
    margin: auto;
    padding: 0 var(--space-4);
}

.wrapper {
    min-height: 100%;
}

#ins-logo {
    margin: auto;
    display: block;
    height: 156px;
    text-align: center;
}

@media (max-width: 800px) {
    .container {
        max-width: 600px;
        transition: 0.3s ease all
    }
}

@media (max-width: 650px) {
    .container {
        max-width: 83%
    }

    .navbar-ul {
        margin-top: 5px
    }
}

@media (max-width: 500px) {
    .navbar {
        text-align: center;
        padding: 50px 0px 0px 0px
    }

    #ins-logo {
        height: 108px;
    }

    #author-name {
        width: 100%;
        float: none
    }

    #navlist {
        padding: 10px 0 10px 0;
        margin: 0;
        display: block;
        float: none;
        text-align: center;
        width: 100%
    }

    #navlist li.alignable,
    #navlist li.pull-left,
    #navlist li.pull-right {
        display: inline-block
    }

    #navlist li.pull-left {
        float: none
    }

    #navlist li.nav-list {
        margin: 0
    }
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 20px
}

.social-icons a {
    color: var(--fg);
    font-size: 22px;
    text-decoration: none;
    transition: color 0.2s ease, transform 0.2s ease;
}

.social-icons a:hover {
    color: var(--brand);
    transform: translateY(-1px);
}

/* Fixed sidebar social icons */
.social-icons-sidebar {
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 28px;
    z-index: 100;
}

.social-icons-sidebar a {
    color: var(--fg);
    text-decoration: none;
    transition: color 0.2s ease, transform 0.2s ease;
}

.social-icons-sidebar a:hover {
    color: var(--brand);
    transform: translateX(-3px);
}

/* Hide sidebar on tablets and mobile */
@media (max-width: 1024px) {
    .social-icons-sidebar {
        display: none !important;
    }
}

/* Show horizontal social icons below content on mobile */
.social-icons-mobile {
    display: none;
    justify-content: center;
    gap: 24px;
    margin: var(--space-6) 0;
    padding: var(--space-4) 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.social-icons-mobile a {
    color: var(--fg);
    font-size: 1.8rem;
    text-decoration: none;
    transition: color 0.2s ease, transform 0.2s ease;
}

.social-icons-mobile a:hover {
    color: var(--brand);
    transform: translateY(-2px);
}

@media (max-width: 1024px) {
    .social-icons-mobile {
        display: flex !important;
    }
}

.fab.fa-twitter {
    font-family: sans-serif
}

.fab.fa-twitter::before {
    content: "𝕏";
    font-size: 1.2em
}

.content a:hover {
    text-decoration: underline
}

.content ol {
    counter-reset: list
}

.content ol>li {
    list-style-position: none;
    position: relative;
    list-style: none;
    margin-top: 5px;
    margin-bottom: 5px
}

.content ul>li {
    margin: 5px 0 5px 0
}

.content ul {
    padding: 0 20px 0 20px
}

.news-list {
    max-height: 280px;
    overflow-y: auto;
    margin: var(--space-3) 0 var(--space-4);
    padding-right: var(--space-2);
    scroll-behavior: smooth;
    scrollbar-gutter: stable both-edges;
}

.news-list li {
    margin-bottom: var(--space-2);
}

.news-list::-webkit-scrollbar {
    width: 6px;
}

.news-list::-webkit-scrollbar-track {
    background: color-mix(in srgb, var(--border) 50%, transparent);
    border-radius: 999px;
}

.news-list::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--brand) 50%, transparent);
    border-radius: 999px;
}

[data-theme="dark"] .news-list::-webkit-scrollbar-track {
    background: color-mix(in srgb, var(--border) 65%, transparent);
}

[data-theme="dark"] .news-list::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--brand) 70%, transparent);
}

.content ol {
    padding: 0 30px 0 30px
}

.content ol>li:before {
    content: "[" counter(list, decimal) "] ";
    counter-increment: list;
    position: absolute;
    left: -30px
}

.content blockquote {
    border-left: 5px solid var(--muted);
    margin: 20px 0 20px 0;
    padding: 2px 8px 2px 8px;
    font-style: italic;
    color: var(--fg);
}

.content .profile-picture {
    height: 180px;
    width: 180px;
    position: relative;
    margin: 4px 0 8px 16px;
    float: right;
    border-radius: 50%;
    object-fit: cover;
    object-position: var(--profile-object-position, 50% 0%);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

p .content .profile-picture {
    padding: 0;
    margin: 0
}

@media (max-width: 800px) {
    .content .profile-picture {
        float: none;
        display: block;
        margin: 12px auto;
    }
}

@media (max-width: 600px) {
    .news-list {
        max-height: 220px;
        padding-right: var(--space-1);
    }
}

.content img {
    text-align: center;
    width: 100%
}

table {
    margin: 15px 0;
    border-collapse: collapse;
    width: 100%;
    padding: 0
}

table tr {
    border-top: 1px solid var(--border);
    background-color: var(--bg);
    margin: 0;
    padding: 0
}

table tr:nth-child(2n) {
    background-color: color-mix(in srgb, var(--border) 30%, transparent);
}

table tr th {
    font-weight: bold;
    border: 1px solid var(--border);
    text-align: left;
    margin: 0;
    padding: 6px 13px;
    color: var(--heading);
}

table tr td {
    border: 1px solid var(--border);
    text-align: left;
    margin: 0;
    padding: 6px 13px;
    color: var(--fg);
}

table tr th :first-child,
table tr td :first-child {
    margin: 0
}

table tr th :last-child,
table tr td :last-child {
    margin: 0
}

.publications {
    max-width: 800px;
    margin: 0 auto;
    padding: 0;
    list-style-type: none
}

.publication {
    margin-bottom: 20px;
    padding: var(--space-4);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
    transform: translateY(0);
    transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.publication h4 {
    margin-top: 0;
    margin-bottom: 5px;
    font-size: 1.05rem;
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.4;
}

.publication p {
    margin: 2px;
    font-size: 0.95em;
    color: var(--muted);
}

.publication a {
    text-decoration: none;
    color: var(--brand)
}

.publication h4 a {
    color: var(--heading);
    font-family: var(--font-heading);
    font-weight: 600;
}

.publication a:hover {
    text-decoration: underline
}

.publication:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.pub-meta {
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 4px 0 6px;
}

.pub-meta i {
    color: var(--brand);
}

/* Author contribution/mentorship markers */
.mark {
    font-size: 0.85em;
    vertical-align: super;
    line-height: 0;
    color: var(--brand);
    margin-left: 2px;
}

/* Emphasize underlined author (your name) in publications */
.publication p u {
    font-weight: 700;
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
}

/* Publications legend */
.pub-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 6px 0 16px;
}

.pub-legend .legend-break {
    flex-basis: 100%;
    height: 0;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: color-mix(in srgb, var(--brand) 8%, transparent);
    color: var(--fg);
    font-size: 0.82rem;
    line-height: 1;
}

/* Interactive chips for filtering */
.chip.clickable {
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.chip.clickable:hover {
    background: color-mix(in srgb, var(--brand) 14%, transparent);
    transform: translateY(-1px);
}

.chip.active {
    background: color-mix(in srgb, var(--brand) 18%, transparent);
    color: var(--fg);
    border-color: var(--brand);
}

/* Dark theme keeps strong contrast for active chips */
[data-theme="dark"] .chip.active {
    background: var(--brand);
    color: #000000;
    border-color: var(--brand);
}

/* Icon highlight behavior on hover and when active */
.chip i {
    color: var(--brand);
    transition: color 0.2s ease;
}

.chip.clickable:hover i {
    color: var(--brand-700);
}

.chip.active i {
    color: var(--brand-700);
}

[data-theme="dark"] .chip.active i {
    color: #000000;
}

/* Avoid flicker on mouse down */
.chip.clickable:active {
    background: color-mix(in srgb, var(--brand) 18%, transparent);
}

.chip.disabled {
    opacity: 0.6;
    cursor: default;
    pointer-events: none;
}

/* Hidden publications when filtered out */
.publication.hidden {
    display: none !important;
}

.btn {
    display: inline-block;
    margin: 2px 2px 2px 0;
    padding: 2px 8px;
    font-size: 0.78em;
    color: var(--brand);
    text-decoration: none;
    border: 1px solid var(--brand);
    border-radius: 999px;
    background: color-mix(in srgb, var(--brand) 8%, transparent);
    transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.btn:hover {
    background-color: var(--brand);
    color: var(--bg);
    transform: translateY(-1px);
}

.btn-outline-primary {
    color: var(--brand);
    border-color: var(--brand)
}

.btn-outline-primary:hover {
    background-color: var(--brand);
    color: var(--bg);
}

/* Theme toggle */
.theme-toggle {
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--brand) 6%, transparent);
    color: var(--fg);
    border-radius: 999px;
    padding: 6px 10px;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease, color 0.2s ease;
}

.theme-toggle:hover {
    transform: translateY(-1px);
    background: color-mix(in srgb, var(--brand) 10%, transparent);
}

.theme-toggle i {
    font-size: 14px;
}

.footer-note {
    display: block;
    color: var(--muted);
    margin-top: 4px;
}

.credits {
    color: var(--muted);
}

.credits a {
    color: var(--fg);
    margin: 0 6px;
}

.credits a:hover {
    color: var(--brand);
    text-decoration: underline;
}

/* Section reveal animation */
.reveal {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* Blog page */
.blog-hero {
    background: color-mix(in srgb, var(--brand) 6%, var(--bg));
    border-radius: calc(var(--radius) * 1.4);
    padding: var(--space-5);
    margin: var(--space-5) 0 var(--space-4);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.blog-eyebrow {
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: var(--space-2);
    font-family: var(--font-sans);
}

.blog-intro {
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) * 1.2);
    background: color-mix(in srgb, var(--brand) 4%, var(--bg));
    padding: var(--space-5);
    margin-bottom: var(--space-4);
    position: relative;
    overflow: hidden;
}

.blog-intro::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(circle at 20% 20%, color-mix(in srgb, var(--brand) 20%, transparent), transparent 55%);
    opacity: 0.5;
}

.blog-intro-inner {
    position: relative;
    z-index: 1;
}

.blog-intro h2 {
    border-left-color: var(--brand-700);
    margin-top: 0;
}

.intro-kicker {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem;
    color: var(--muted);
    margin-bottom: var(--space-2);
    font-family: var(--font-sans);
}

.blog-controls {
    margin-bottom: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.toggle-all {
    border: 1px solid color-mix(in srgb, var(--brand) 30%, var(--border));
    background: color-mix(in srgb, var(--brand) 16%, var(--bg));
    color: var(--heading);
    border-radius: 999px;
    padding: 10px 18px;
    font-family: var(--font-sans);
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    align-self: flex-start;
}

.toggle-all:hover,
.toggle-all:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    outline: none;
}

.toggle-all:focus-visible {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 30%, transparent);
}

.blog-controls-hint {
    font-size: 0.9rem;
    color: var(--muted);
    max-width: 520px;
}

.blog-sections {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.blog-section {
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) * 1.1);
    padding: var(--space-3) var(--space-4);
    background: var(--bg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.blog-section[open] {
    border-color: var(--brand);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    background: color-mix(in srgb, var(--brand) 6%, var(--bg));
}

.blog-section summary {
    list-style: none;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-3);
    cursor: pointer;
    margin: 0;
}

.blog-section summary::-webkit-details-marker {
    display: none;
}

.summary-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.summary-title {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    color: var(--heading);
}

.summary-meta {
    font-size: 0.9rem;
    color: var(--muted);
}

.summary-chevron {
    width: 14px;
    height: 14px;
    border-right: 2px solid var(--muted);
    border-bottom: 2px solid var(--muted);
    transform: rotate(-45deg);
    transition: transform 0.2s ease, border-color 0.2s ease;
    margin-top: 4px;
}

.blog-section[open] .summary-chevron {
    transform: rotate(45deg);
    border-color: var(--brand);
}

.section-body {
    margin-top: var(--space-3);
    border-top: 1px solid var(--border);
    padding-top: var(--space-3);
}

.section-body p:last-child {
    margin-bottom: 0;
}

.blog-sections blockquote {
    border-left: 4px solid var(--brand);
    padding-left: var(--space-3);
    font-style: italic;
    color: var(--heading);
    background: color-mix(in srgb, var(--brand) 8%, transparent);
    border-radius: var(--radius);
    margin: var(--space-3) 0;
}

.blog-outro,
.blog-closing {
    margin: var(--space-5) 0 var(--space-6);
    padding: var(--space-4);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    background: color-mix(in srgb, var(--brand) 4%, var(--bg));
}

.blog-closing p {
    margin-top: 0;
    color: var(--fg);
    font-size: 0.98rem;
}

@media (max-width: 640px) {

    .blog-hero,
    .blog-intro,
    .blog-section,
    .blog-outro,
    .blog-closing {
        padding: var(--space-4);
    }

    .blog-section summary {
        flex-direction: column;
    }

    .summary-chevron {
        align-self: flex-end;
    }

    .toggle-all {
        width: 100%;
        text-align: center;
    }
}