/* Self-hosted fonts -- no third-party request chain on first paint.
   Latin subset only: covers ASCII plus common accents (U+0000-00FF). */

@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('assets/fonts/jetbrains-mono-400-latin.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('assets/fonts/jetbrains-mono-500-latin.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('assets/fonts/jetbrains-mono-700-latin.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}


/* Reset and base styles */
* {
    box-sizing: border-box;
}

html {
    color-scheme: light dark;
    scrollbar-gutter: stable;
    scroll-behavior: smooth;
}

/* CSS Custom Properties for theming */
:root {
    --font-mono: 'JetBrains Mono', ui-monospace, 'Courier New', monospace;

    /* Light theme colors (inspired by astro-theme-cactus) */
    --color-global-bg: oklch(98.48% 0 0);
    --color-global-text: oklch(26.99% 0.0096 235.05);
    --color-link: oklch(55.44% 0.0431 185.69);
    --color-accent: #af67ff;
    --color-accent-2: oklch(18.15% 0 0);
    --color-quote: #af67ff;
    --color-border: #e5e7eb;
    --color-card-bg: rgba(255, 255, 255, 0.8);
    --color-shadow: rgba(0, 0, 0, 0.1);
}

/* Dark theme colors */
[data-theme="dark"] {
    --color-global-bg: oklch(23.64% 0.0045 248);
    --color-global-text: oklch(83.54% 0 264);
    --color-link: oklch(70.44% 0.1133 349);
    --color-accent: #5ff26b;
    --color-accent-2: oklch(94.66% 0 0);
    --color-quote: oklch(94.8% 0.106 136.49);
    --color-border: #374151;
    --color-card-bg: rgba(31, 41, 55, 0.8);
    --color-shadow: rgba(0, 0, 0, 0.3);
}

/* Base typography */
body {
    font-family: var(--font-mono);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--color-global-bg);
    color: var(--color-global-text);
    transition: opacity 0.2s ease;
    padding-top: 6rem;
    /* Increased to account for fixed header */
}

/* Responsive body padding */
@media (max-width: 640px) {
    body {
        padding-top: 5rem;
        /* Reduced padding on mobile */
    }
}

/* Utility classes matching astro-theme-cactus */
.bg-global-bg {
    background-color: var(--color-global-bg);
}

.text-global-text {
    color: var(--color-global-text);
}

.text-accent {
    color: var(--color-accent);
}

.text-accent-2 {
    color: var(--color-accent-2);
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-1 {
    flex: 1;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.min-h-screen {
    min-height: 100vh;
}

.max-w-3xl {
    max-width: 57.6rem;
}

.px-4 {
    padding-left: 1rem;
    padding-right: 1rem;
}

.px-8 {
    padding-left: 2rem;
    padding-right: 2rem;
}

.pt-16 {
    padding-top: 4rem;
}

.py-4 {
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.py-8 {
    padding-top: 2rem;
    padding-bottom: 2rem;
}

.mb-8 {
    margin-bottom: 1.5rem;
}

.mb-16 {
    margin-bottom: 4rem;
}

.mb-28 {
    margin-bottom: 7rem;
}

.me-3 {
    margin-inline-end: 0.75rem;
}

.me-4 {
    margin-inline-end: 1rem;
}

.ms-auto {
    margin-inline-start: auto;
}

.mt-auto {
    margin-top: auto;
}

.h-4 {
    height: 1rem;
}

.w-4 {
    width: 1rem;
}

.h-7 {
    height: 1.75rem;
}

.w-7 {
    width: 1.75rem;
}

.h-10 {
    height: 2.5rem;
}

.w-6 {
    width: 1.5rem;
}

.text-sm {
    font-size: 0.875rem;
}

.text-xl {
    font-size: 1.25rem;
}

.text-2xl {
    font-size: 1.5rem;
}

.font-normal {
    font-weight: 400;
}

.font-bold {
    font-weight: 700;
}

.font-mono {
    font-family: var(--font-mono);
}

.antialiased {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.scroll-smooth {
    scroll-behavior: smooth;
}

.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

.hidden {
    display: none;
}

.rounded-md {
    border-radius: 0.375rem;
}

.shadow {
    box-shadow: 0 1px 3px 0 var(--color-shadow), 0 1px 2px -1px var(--color-shadow);
}

.backdrop-blur-sm {
    backdrop-filter: blur(4px);
}

.underline {
    text-decoration: underline;
}

.underline-offset-2 {
    text-underline-offset: 2px;
}

.grayscale {
    filter: grayscale(100%);
}

.opacity-75 {
    opacity: 0.75;
}

.text-center {
    text-align: center;
}

.text-xs {
    font-size: 0.75rem;
}

/* Responsive utilities */
@media (min-width: 640px) {
    .sm\:px-8 {
        padding-left: 2rem;
        padding-right: 2rem;
    }

    .sm\:flex {
        display: flex;
    }

    .sm\:flex-row {
        flex-direction: row;
    }

    .sm\:flex-col {
        flex-direction: column;
    }

    .sm\:items-center {
        align-items: center;
    }

    .sm\:invisible {
        visibility: hidden;
    }

    .sm\:hidden {
        display: none;
    }

    .sm\:static {
        position: static;
    }

    .sm\:relative {
        position: relative;
    }

    .sm\:absolute {
        position: absolute;
    }

    .sm\:z-auto {
        z-index: auto;
    }

    .sm\:mt-1 {
        margin-top: 0.25rem;
    }

    .sm\:me-0 {
        margin-inline-end: 0;
    }

    .sm\:py-0 {
        padding-top: 0;
        padding-bottom: 0;
    }

    .sm\:h-20 {
        height: 5rem;
    }

    .sm\:w-12 {
        width: 3rem;
    }

    .sm\:text-2xl {
        font-size: 1.5rem;
    }

    .sm\:ps-18 {
        padding-inline-start: 4.5rem;
    }

    .sm\:-ms-4 {
        margin-inline-start: -1rem;
    }

    .sm\:divide-accent> :not([hidden])~ :not([hidden]) {
        border-inline-start-width: 1px;
        border-color: var(--color-accent);
    }

    .sm\:rounded-none {
        border-radius: 0;
    }

    .sm\:bg-transparent {
        background-color: transparent;
    }

    .sm\:shadow-none {
        box-shadow: none;
    }

    .sm\:backdrop-blur-none {
        backdrop-filter: none;
    }
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.focus\:not-sr-only:focus {
    position: static;
    width: auto;
    height: auto;
    padding: 0;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Custom component styles */
.title {
    color: var(--color-accent-2);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.cactus-link {
    color: var(--color-link);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: opacity 0.2s ease;
}

.cactus-link:hover {
    text-decoration-thickness: 2px;
}

/* Hover color for individual 'b'/'B' letters */
.hover-b {
    transition: color 0.15s ease;
}

.hover-b:hover {
    color: #ffd400;
    /* yellow */
}

/* Flying bee emoji created on clicking a 'b' */
.flying-bee {
    position: fixed;
    z-index: 9999;
    pointer-events: none;
    font-size: 1.2em;
    line-height: 1;
    will-change: transform, opacity;
    animation: bee-fly 3s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

@keyframes bee-fly {
    0% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 1;
    }

    20% {
        transform: translate(calc(var(--dx) * 0.2), calc(var(--dy) * 0.2)) rotate(90deg);
    }

    40% {
        transform: translate(calc(var(--dx) * 0.4 + 6px), calc(var(--dy) * 0.4 - 4px)) rotate(180deg);
    }

    60% {
        transform: translate(calc(var(--dx) * 0.6 - 4px), calc(var(--dy) * 0.6 + 6px)) rotate(270deg);
    }

    80% {
        transform: translate(calc(var(--dx) * 0.8 + 3px), calc(var(--dy) * 0.8 - 3px)) rotate(360deg);
    }

    100% {
        transform: translate(var(--dx), var(--dy)) rotate(450deg);
        opacity: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .flying-bee {
        animation: bee-fade 250ms ease-out forwards;
    }

    @keyframes bee-fade {
        to {
            opacity: 0;
        }
    }
}

/* Header styles */
#main-header {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    max-width: 57.6rem;
    /* Same as max-w-3xl */
    width: 100%;
    background-color: color-mix(in srgb, var(--color-global-bg) 95%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid color-mix(in srgb, var(--color-border) 50%, transparent);
    z-index: 100;
    padding: 1rem 1rem 0.5rem 1rem;
    /* Match main content px-4 */
}



/* Header grid layout */
.header-grid {
    display: grid;
    grid-template-columns: auto 1fr minmax(0, auto);
    grid-template-rows: auto auto;
    grid-template-areas:
        "logo title controls"
        "logo nav controls";
    align-items: center;
    column-gap: 1rem;
}

.header-logo {
    grid-area: logo;
    align-self: center;
}

.header-title {
    grid-area: title;
    align-self: center;
}

.header-nav {
    grid-area: nav;
    align-self: center;
}

.header-controls {
    grid-area: controls;
    justify-self: end;
    max-width: 100%;
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Nav links now centered with title - no additional margin needed */

@media (min-width: 640px) {
    #main-header {
        padding: 1rem 2rem 0.5rem 2rem;
        /* Match main content sm:px-8 */
    }
}

.group:hover .grayscale {
    filter: none;
}

/* Make logo clickable with cursor pointer and subtle hover effect */
#main-header a[href="#"] {
    cursor: pointer;
    transition: opacity 0.2s ease;
}

#main-header a[href="#"]:hover svg {
    transform: scale(1.05);
    transition: opacity 0.2s ease;
}

#main-header a[href="#"]:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
    border-radius: 4px;
}

/* Navigation styles - Desktop */
.mobile-nav-menu {
    /* Desktop styles */
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0;
    position: static;
    background: transparent;
    margin-top: 0.25rem;
    margin-left: -1rem;
}

.mobile-nav-menu>a {
    padding: 0 1rem;
    border-left: 1px solid var(--color-accent);
    color: var(--color-accent);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.mobile-nav-menu>a:first-child {
    border-left: none;
}

.mobile-nav-menu>a:hover {
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* Mobile navigation - completely override everything */
@media (max-width: 640px) {
    .mobile-nav-menu {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        width: 100vw !important;
        height: 100vh !important;
        background-color: color-mix(in srgb, var(--color-global-bg) 98%, transparent) !important;
        backdrop-filter: blur(20px) !important;
        -webkit-backdrop-filter: blur(20px) !important;
        z-index: 150 !important;
        display: none !important;
        flex-direction: column !important;
        justify-content: center !important;
        align-items: center !important;
        gap: 2rem !important;
        padding: 2rem !important;
        border: none !important;
        border-radius: 0 !important;
        box-shadow: none !important;
        margin: 0 !important;
        transform: none !important;
        inset: 0 !important;
    }

    .mobile-nav-menu>a {
        font-size: 1.5rem !important;
        padding: 1rem 2rem !important;
        border-radius: 0.5rem !important;
        transition: opacity 0.2s ease !important;
        text-align: center !important;
        min-width: 200px !important;
        background-color: color-mix(in srgb, var(--color-accent) 10%, transparent) !important;
        border: 1px solid var(--color-accent) !important;
        color: var(--color-accent) !important;
        text-decoration: none !important;
        display: block !important;
        margin: 0 !important;
    }

    .mobile-nav-menu>a:hover {
        background-color: var(--color-accent) !important;
        color: var(--color-global-bg) !important;
        transform: translateY(-2px) !important;
        box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent) 30%, transparent) !important;
        text-decoration: none !important;
    }
}

/* Show mobile menu when menu-open class is present */
.group.menu-open .mobile-nav-menu {
    display: flex !important;
    z-index: 150 !important;
}

/* Mobile menu button improvements */
#toggle-navigation-menu {
    z-index: 200;
    /* Highest z-index to stay above menu */
    position: relative;
    background-color: color-mix(in srgb, var(--color-accent-2) 10%, transparent);
    border-radius: 0.375rem;
    border: 1px solid color-mix(in srgb, var(--color-accent-2) 20%, transparent);
    transition: opacity 0.2s ease;
}

#toggle-navigation-menu:hover {
    background-color: color-mix(in srgb, var(--color-accent-2) 20%, transparent);
    transform: scale(1.05);
}

/* Hamburger icon sizing and toggling */
#toggle-navigation-menu svg {
    width: 24px;
    height: 24px;
    transition: opacity 0.2s ease;
}

#toggle-navigation-menu[aria-expanded="false"] svg:first-of-type {
    display: block;
    opacity: 1;
}

#toggle-navigation-menu[aria-expanded="false"] svg:last-of-type {
    display: none;
    opacity: 0;
}

#toggle-navigation-menu[aria-expanded="true"] svg:first-of-type {
    display: none;
    opacity: 0;
}

#toggle-navigation-menu[aria-expanded="true"] svg:last-of-type {
    display: block;
    opacity: 1;
}

/* Theme toggle styles */
#theme-toggle {
    background-color: color-mix(in srgb, var(--color-accent-2) 20%, transparent);
    border: 1px solid color-mix(in srgb, var(--color-accent-2) 30%, transparent);
    transition: opacity 0.2s ease;
    z-index: 50;
    position: relative;
}

#theme-toggle:hover {
    background-color: color-mix(in srgb, var(--color-accent-2) 30%, transparent);
    transform: scale(1.05);
}

/* Theme icon visibility */
[data-theme="dark"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: none;
}

[data-theme="light"] .moon-icon {
    display: block;
}

:root .sun-icon {
    display: none;
}

:root .moon-icon {
    display: block;
}

/* Prose styles (typography) */
.prose {
    color: var(--color-global-text);
    max-width: none;
    /* Allow prose to use full container width */
}

.prose> :first-child {
    margin-top: 0;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4,
.prose h5,
.prose h6 {
    color: var(--color-accent-2);
    font-weight: 600;
    line-height: 1.25;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.prose h1 {
    font-size: 1.9rem;
}

.prose h2 {
    font-size: 1.5rem;
}

.prose h3 {
    font-size: 1.5rem;
}

.prose h4 {
    font-size: 1.25rem;
}

.prose p {
    margin-bottom: 1rem;
}

/* Bibliographic data sits tighter than body prose. */
.prose .paper-meta {
    font-size: 0.85rem;
    line-height: 1.55;
}

.prose ul,
.prose ol {
    margin-bottom: 1.25rem;
    padding-left: 1.625rem;
}

.prose li {
    margin-bottom: 0.5rem;
}

.prose a {
    color: var(--color-link);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.prose a:hover {
    text-decoration-thickness: 2px;
}

/* About section layout */
.about-header {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: nowrap;
    margin-top: 0.25rem;
    margin-bottom: 1rem;
}

.about-avatar {
    width: 120px;
    height: 120px;
    border-radius: 9999px;
    object-fit: cover;
    flex-shrink: 0;
    border: 2px solid var(--color-border);
    box-shadow: 0 2px 10px color-mix(in srgb, var(--color-shadow) 50%, transparent);
    background-color: var(--color-border);
}

.about-header-content {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

/* Reduce default heading top margin inside about header to better center with avatar */
.about-header .title {
    margin-top: 0;
    margin-bottom: 0.5rem;
}

@media (max-width: 640px) {
    .about-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .about-avatar {
        width: 88px;
        height: 88px;
        margin-top: 1.5rem;
        /* Add padding above the avatar on mobile */
    }

    .about-header-content {
        align-items: center;
    }
}

.prose strong {
    color: var(--color-accent-2);
    font-weight: 600;
}

.prose code {
    font-family: var(--font-mono);
    background-color: color-mix(in srgb, var(--color-accent-2) 10%, transparent);
    border: 1px dotted #666;
    border-radius: 2px;
    padding: 0.125rem 0.25rem;
    font-size: 0.875rem;
}

.prose blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: 1rem;
    margin-left: 0;
    font-style: italic;
    color: var(--color-quote);
}

/* Project grid */
.project-grid {
    display: grid;
    gap: 2rem;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .project-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

.project-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    padding: 1.5rem;
    backdrop-filter: blur(8px);
    transition: opacity 0.2s ease;
}

.project-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--color-shadow);
}

.project-card h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--color-accent-2);
}

.project-card p {
    margin-bottom: 1.5rem;
    color: var(--color-global-text);
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-links a {
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-accent);
    border-radius: 0.25rem;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.project-links a:hover {
    background-color: var(--color-accent);
    color: var(--color-global-bg);
}

/* Contact links */
.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.contact-links a {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.contact-links a:hover {
    background-color: var(--color-accent);
    color: var(--color-global-bg);
    transform: translateY(-1px);
}

/* Smooth transitions */
* {
    transition: opacity 0.2s ease;
}

/* Focus styles for accessibility: only show on keyboard navigation */
a:focus,
button:focus {
    outline: none;
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Scroll margin for anchor links */
:target {
    scroll-margin-top: 8rem;
    /* Increased to account for fixed header */
}

@media (max-width: 640px) {
    :target {
        scroll-margin-top: 5rem;
        /* Reduced for mobile */
    }
}

/* Responsive typography */
@media (max-width: 640px) {
    .title {
        font-size: 1.25rem;
    }

    .prose h1 {
        font-size: 1.875rem;
    }

    .prose h2 {
        font-size: 1.5rem;
    }

    .prose h3 {
        font-size: 1.25rem;
    }

    .contact-links {
        flex-direction: column;
    }

    .project-links {
        flex-direction: column;
    }

    /* Mobile header adjustments */
    #main-header {
        /* Keep fixed position on mobile - removed position: relative override */
        z-index: 100;
        /* Ensure proper z-index on mobile */
    }

    /* Prevent body scroll when menu is open */
    body.menu-open {
        overflow: hidden;
        height: 100vh;
    }

    /* Logo and title spacing on mobile */
    #main-header .text-xl {
        font-size: 1.125rem;
    }

    /* Mobile menu animation */
    .mobile-nav-menu {
        animation: fadeInScale 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .group.menu-open .mobile-nav-menu {
        animation: fadeInScale 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
}

/* Menu animation keyframes */
@keyframes fadeInScale {
    0% {
        opacity: 0;
        transform: scale(0.95);
    }

    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Touch-friendly improvements */
@media (max-width: 640px) {

    /* Collapse grid to a simple row on mobile; keep existing overlay menu */
    .header-grid {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 0.75rem;
        flex-wrap: nowrap;
    }

    .header-title {
        display: flex;
        align-items: center;
        flex: 1;
        min-width: 0;
    }

    .header-nav {
        display: none;
    }

    /* Adjust controls spacing on mobile */
    .header-controls {
        gap: 0.5rem;
        white-space: nowrap;
    }

    /* Add spacing after logo on mobile */
    .header-logo {
        margin-right: 0.5rem;
    }

    /* Enlarge hamburger icon visuals on mobile */
    #toggle-navigation-menu svg {
        width: 24px;
        height: 24px;
    }

    /* Larger touch targets */
    #theme-toggle,
    #toggle-navigation-menu {
        min-width: 44px;
        min-height: 44px;
        padding: 0.5rem;
    }

    /* Better touch feedback */
    #toggle-navigation-menu:active,
    #theme-toggle:active {
        transform: scale(0.95);
    }

    /* Improved header spacing on mobile */
    #main-header {
        /* Keep fixed positioning - only adjust padding */
        padding-bottom: 1rem;
        /* Remove margin-bottom since fixed headers don't need margin */
    }

    /* Reduce first section top padding to avoid excessive gap under fixed header */
    #about {
        padding-top: 1rem !important;
    }

    /* Better logo visibility and size */
    #main-header svg {
        filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
        height: 4rem !important;
        /* Increase from 3.5rem to 4rem */
        width: 2.4rem !important;
        /* Increase from 2.1rem to 2.4rem, maintaining aspect ratio */
    }
}

/* Prevent text selection on interactive elements */
#toggle-navigation-menu,
#theme-toggle {
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* Smooth transitions for better UX */
.mobile-nav-menu a {
    transition: opacity 0.2s ease;
}

/* Active navigation link styling */
@media (max-width: 640px) {
    .mobile-nav-menu a.active {
        background-color: var(--color-accent) !important;
        color: var(--color-global-bg) !important;
        border-color: var(--color-accent) !important;
        transform: translateY(-2px) !important;
        box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent) 30%, transparent) !important;
    }
}

@media (min-width: 640px) {
    .mobile-nav-menu a.active {
        background-color: transparent !important;
        color: var(--color-accent) !important;
        text-decoration: underline !important;
        text-underline-offset: 4px !important;
        /* Keep vertical dividers visible even when active */
        border-left: 1px solid var(--color-accent) !important;
    }

    .mobile-nav-menu a.active:first-child {
        border-left: none !important;
    }
}

/* Animation for theme transitions */
html {
    transition: opacity 0.2s ease;
}

/* Loading spinner */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--color-accent);
    font-style: italic;
}

.loading-spinner::after {
    content: '';
    width: 20px;
    height: 20px;
    margin-left: 10px;
    border: 2px solid var(--color-accent);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Error message styling */
.error-message {
    padding: 1rem;
    background-color: color-mix(in srgb, #ef4444 10%, transparent);
    border: 1px solid #ef4444;
    border-radius: 0.5rem;
    color: #ef4444;
    text-align: center;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-global-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-2);
}

/* Publication card styles */
.publication-card {
    display: flex;
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(8px);
    transition: opacity 0.2s ease;
    gap: 1.5rem;
}

.publication-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--color-shadow);
}

.publication-image {
    flex-shrink: 0;
    width: 120px;
    height: 90px;
    border-radius: 0.5rem;
    overflow: hidden;
    background-color: var(--color-border);
}

.publication-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.publication-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.publication-title {
    margin: 0 !important;
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.4;
}

/* Override prose heading margins for publication titles */
.prose .publication-title {
    margin-top: 0 !important;
    margin-bottom: 0.5rem;
}

.publication-link {
    color: var(--color-accent-2);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.publication-link:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

.publication-venue {
    font-size: 0.875rem;
    color: var(--color-accent);
    font-weight: 500;
    background-color: color-mix(in srgb, var(--color-accent) 10%, transparent);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    display: inline-block;
    width: fit-content;
}

.publication-authors {
    font-size: 0.875rem;
    color: var(--color-global-text);
    opacity: 0.8;
}

.publication-year {
    font-size: 0.875rem;
    color: var(--color-global-text);
    opacity: 0.6;
    font-style: italic;
}

.publication-description {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--color-global-text);
    opacity: 0.9;
}

.publication-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.tag {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    border: 1px solid;
    transition: opacity 0.2s ease;
}

.tag-safety {
    background-color: color-mix(in srgb, #ef4444 15%, transparent);
    border-color: #ef4444;
    color: #ef4444;
}

.tag-interpretability {
    background-color: color-mix(in srgb, #af67ff 15%, transparent);
    border-color: #af67ff;
    color: #af67ff;
}

.tag-arxiv {
    background-color: color-mix(in srgb, #10b981 15%, transparent);
    border-color: #10b981;
    color: #10b981;
}

.tag-workshop {
    background-color: color-mix(in srgb, #f59e0b 15%, transparent);
    border-color: #f59e0b;
    color: #f59e0b;
}

.tag-conference {
    background-color: color-mix(in srgb, #3b82f6 15%, transparent);
    border-color: #3b82f6;
    color: #3b82f6;
}

.tag-bibtex {
    background-color: color-mix(in srgb, #6b7280 15%, transparent);
    border-color: #6b7280;
    color: #6b7280;
}

.tag:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px var(--color-shadow);
}

.publication-citations {
    font-size: 0.75rem;
    color: var(--color-global-text);
    opacity: 0.6;
    font-style: italic;
    margin-top: 0.5rem;
}

/* Responsive publication cards */
@media (max-width: 768px) {
    .publication-card {
        flex-direction: column;
        gap: 1rem;
    }

    .publication-image {
        width: 100%;
        height: 120px;
    }

    .publication-tags {
        justify-content: center;
    }
}

/* Party Hat Explosion Animation Styles */
.party-hat {
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    width: 40px;
    height: 40px;
    opacity: 1;
    transform-origin: center;
}

.party-hat svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.3));
}

@keyframes partyHatExplosion {
    0% {
        opacity: 1;
        transform: scale(0.5) rotate(0deg);
    }

    20% {
        opacity: 1;
        transform: scale(1.2) rotate(72deg);
    }

    100% {
        opacity: 0;
        transform: scale(0.8) rotate(360deg);
    }
}

.party-hat.exploding {
    animation: partyHatExplosion 2s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

/* Logo pulse animation for party mode */
.logo-party-pulse {
    animation: partyPulse 0.6s ease-out;
}

@keyframes partyPulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }

    100% {
        transform: scale(1);
    }
}

/* Confetti-like sparkles */
.party-sparkle {
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    opacity: 1;
}

@keyframes sparkleExplosion {
    0% {
        opacity: 1;
        transform: scale(0) rotate(0deg);
    }

    20% {
        opacity: 1;
        transform: scale(1.5) rotate(180deg);
    }

    100% {
        opacity: 0;
        transform: scale(0.5) rotate(720deg);
    }
}

.party-sparkle.exploding {
    animation: sparkleExplosion 1.5s ease-out forwards;
}

/* Smaller party hats on mobile */
@media (max-width: 768px) {
    .party-hat {
        width: 30px;
        height: 30px;
    }
}

/* ============================= */
/* Resume Timeline Component     */
/* ============================= */
.timeline {
    position: relative;
    margin: 2.5rem 0 1rem 0;
    /* space reserved for the timeline gutter (line + dot area) */
    --gutter: 2.75rem;
    padding-left: var(--gutter);
    /* alignment vars */
    --dot-size: 0.85rem;
    --line-x: 1.25rem;
    --line-w: 2px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: var(--line-x);
    top: 0.25rem;
    bottom: 0.25rem;
    width: var(--line-w);
    background: color-mix(in srgb, var(--color-accent-2) 20%, transparent);
}

.timeline-item {
    position: relative;
    padding: 0 0 1.75rem 0;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    /* place dot so its center matches the line center; adjust for gutter since dot is inside content box */
    left: calc((var(--line-x) - var(--gutter)) + ((var(--line-w) - var(--dot-size)) / 2));
    top: 0.25rem;
    width: var(--dot-size);
    height: var(--dot-size);
    border-radius: 9999px;
    background: var(--color-accent);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-accent) 20%, transparent);
}

.timeline-header {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.timeline-org {
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-accent-2);
}

.timeline-role {
    color: var(--color-global-text);
    font-size: 1rem;
    opacity: 0.9;
}

.timeline-dates {
    margin-left: auto;
    font-size: 0.8125rem;
    letter-spacing: 0.02em;
    color: color-mix(in srgb, var(--color-accent-2) 65%, transparent);
}

.timeline-meta {
    margin-top: 0.25rem;
    font-size: 0.9rem;
    color: color-mix(in srgb, var(--color-accent-2) 75%, transparent);
}

.timeline-desc {
    margin-top: 0.5rem;
}

@media (max-width: 640px) {
    .timeline {
        --gutter: 2rem;
        padding-left: var(--gutter);
        --line-x: 0.9rem;
    }

    .timeline-dates {
        width: 100%;
        margin-left: 0;
        opacity: 0.8;
    }
}
/* Abstract / BibTeX disclosures. Closed, they sit side by side on a single
   line; opening one promotes it to a full-width block below the chip row. */
.cite-block,
.abstract-block {
    margin-top: 0.4rem;
}

.cite-block:not([open]),
.abstract-block:not([open]) {
    display: inline-block;
    margin-right: 0.4rem;
}

.cite-block[open],
.abstract-block[open] {
    display: block;
}

.cite-block summary,
.abstract-block summary {
    display: inline-block;
    cursor: pointer;
    font-size: 0.8rem;
    letter-spacing: 0.02em;
    color: var(--color-link);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 0.1rem 0.45rem;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.cite-block summary:hover,
.abstract-block summary:hover {
    background-color: color-mix(in srgb, var(--color-accent-2) 8%, transparent);
    border-color: var(--color-link);
}

.cite-block summary::marker,
.cite-block summary::-webkit-details-marker,
.abstract-block summary::marker,
.abstract-block summary::-webkit-details-marker {
    content: "";
    display: none;
}

.cite-block[open] summary,
.abstract-block[open] summary {
    margin-bottom: 0.4rem;
}

.cite-block pre {
    background-color: color-mix(in srgb, var(--color-accent-2) 6%, transparent);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 0.6rem 0.8rem;
    overflow-x: auto;
    font-size: 0.72rem;
    line-height: 1.45;
}

.cite-block pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: inherit;
    white-space: pre;
}

.cite-copy {
    display: block;
    margin-top: 0.4rem;
    font-size: 0.75rem;
    cursor: pointer;
    color: var(--color-link);
    background: none;
    border: none;
    padding: 0;
    font-family: inherit;
}

.cite-copy:hover {
    text-decoration: underline;
}

/* Multi-paragraph abstracts: one panel, paragraphs inside it. */
.abstract-block .panel {
    padding: 0.7rem 0.9rem;
    border-left: 2px solid var(--color-accent);
    background-color: color-mix(in srgb, var(--color-accent-2) 4%, transparent);
    font-size: 0.85rem;
    line-height: 1.6;
}

.abstract-block .panel p {
    margin: 0 0 0.65rem;
    padding: 0;
    border: none;
    background: none;
    font-size: inherit;
    line-height: inherit;
}

.abstract-block .panel p:last-child {
    margin-bottom: 0;
}

/* Single-paragraph abstracts (the papers). */
.abstract-block > p {
    margin: 0;
    padding: 0.7rem 0.9rem;
    border-left: 2px solid var(--color-accent);
    background-color: color-mix(in srgb, var(--color-accent-2) 4%, transparent);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* Permalink affordance on section headings */
.heading-anchor {
    margin-left: 0.5rem;
    font-size: 0.7em;
    font-weight: 400;
    color: var(--color-link);
    text-decoration: none;
    opacity: 0;
    transition: opacity 0.15s ease;
}

h1:hover > .heading-anchor,
h2:hover > .heading-anchor,
.heading-anchor:focus-visible {
    opacity: 0.75;
}

.heading-anchor:hover {
    opacity: 1;
    text-decoration: underline;
}

/* Scroll reveal. The hidden state is applied only once JS arms the observer,
   so with JS off (or if the observer never fires) content stays visible. */
.js-reveal .reveal-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
    will-change: opacity, transform;
}

.js-reveal .reveal-item.is-visible {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .js-reveal .reveal-item {
        opacity: 1;
        transform: none;
        transition: none;
    }
}