/* ===== SELF-HOSTED FONTS ===== */

@font-face {
    font-family: 'Space Grotesk';
    font-style: normal;
    font-weight: 300 700;
    font-display: swap;
    src: url('fonts/space-grotesk-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: 300 500;
    font-display: swap;
    src: url('fonts/jetbrains-mono-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 & BASE ===== */

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

:root {
    --bg: #060606;
    --bg-raised: #0c0c0c;
    --border: #1a1a1a;
    --text: #e8e8e8;
    --text-dim: #cccccc;
    --accent: #8ab4b0;
    --bg-hover: #111111;
    --color-report: #b4a08a;
    --color-dataset: #8ab48a;
    --color-software: #b4a0c8;
    --mono: 'JetBrains Mono', monospace;
    --sans: 'Space Grotesk', sans-serif;
}

html {
    font-size: 19px;
    scroll-behavior: smooth;
    /* Safe area for notched devices */
    padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* Prevent body scroll when mobile nav is open */
body.nav-open {
    overflow: hidden;
}

#network-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    animation: canvas-fade 3s ease-out;
}

@keyframes canvas-fade {
    from { opacity: 0; }
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-weight: 300;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--accent);
    color: var(--bg);
}


/* ===== FOCUS & ACCESSIBILITY ===== */

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

.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    padding: 0.6rem 1.2rem;
    background: var(--accent);
    color: var(--bg);
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-decoration: none;
    z-index: 200;
}

.skip-link:focus {
    top: 1rem;
}


/* ===== NAV ===== */

nav, section, .divider, footer {
    position: relative;
    z-index: 1;
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 clamp(2rem, 5vw, 6rem);
    background: rgba(6, 6, 6, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    height: 64px;
}

.logo {
    font-family: var(--sans);
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
    color: var(--text);
    text-decoration: none;
    margin-right: auto;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-donate {
    order: 10;
    display: inline-flex;
    align-items: center;
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
    text-decoration: none;
    padding: 0.5rem 0.9rem;
    min-height: 36px;
    border: 1px solid var(--accent);
    border-radius: 2px;
    transition: background 0.2s ease, color 0.2s ease;
    white-space: nowrap;
}

.nav-donate:hover,
.nav-donate:focus-visible,
.nav-donate--active {
    background: var(--accent);
    color: var(--bg);
}

.nav-links a {
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-dim);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--text);
}

.nav-links a.nav-active {
    color: var(--text);
}


/* ===== LAYOUT ===== */

section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(2rem, 5vw, 6rem);
}

.divider {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(2rem, 5vw, 6rem);
    height: 1px;
}

.divider::after {
    content: '';
    display: block;
    height: 1px;
    background: var(--border);
}


/* ===== HERO ===== */

.hero {
    padding-top: 180px;
    padding-bottom: 120px;
}

.hero-label {
    font-family: var(--mono);
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 2rem;
}

.hero h1 {
    font-weight: 400;
    font-size: clamp(2.4rem, 5vw, 4rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 2rem;
}

.hero-sub {
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    font-weight: 300;
    color: var(--text-dim);
    max-width: 540px;
    line-height: 1.7;
}


/* ===== PROCESS ===== */

.process {
    padding-top: 100px;
    padding-bottom: 100px;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.process-item {
    display: flex;
    align-items: baseline;
    gap: 3rem;
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--border);
}

.process-item:last-child {
    border-bottom: none;
}

.process-num {
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 300;
    color: var(--text-dim);
    min-width: 2rem;
}

.process-content h3 {
    font-weight: 500;
    font-size: 1.3rem;
    letter-spacing: -0.01em;
    margin-bottom: 0.5rem;
}

.process-content p {
    font-weight: 300;
    font-size: 0.95rem;
    color: var(--text-dim);
}


.section-label {
    font-family: var(--mono);
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 3rem;
}

.program-status {
    font-family: var(--mono);
    font-size: 0.65rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.2rem;
}


/* ===== DROPDOWN NAV ===== */

.nav-dropdown {
    position: relative;
}

.nav-dropdown-trigger {
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-dim);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: color 0.3s ease;
}

.nav-dropdown-trigger::after {
    content: '';
    display: inline-block;
    width: 5px;
    height: 5px;
    border-right: 1px solid var(--text-dim);
    border-bottom: 1px solid var(--text-dim);
    transform: rotate(45deg);
    margin-left: 6px;
    margin-bottom: 2px;
    transition: transform 0.2s ease, border-color 0.3s ease;
}

.nav-dropdown:hover .nav-dropdown-trigger,
.nav-dropdown.open .nav-dropdown-trigger,
.nav-dropdown:focus-within .nav-dropdown-trigger,
.nav-dropdown--active .nav-dropdown-trigger {
    color: var(--text);
}

.nav-dropdown:hover .nav-dropdown-trigger::after,
.nav-dropdown.open .nav-dropdown-trigger::after,
.nav-dropdown:focus-within .nav-dropdown-trigger::after {
    border-color: var(--text);
    transform: rotate(-135deg);
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: -1rem;
    background: rgba(6, 6, 6, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    padding: 0.5rem 0;
    padding-top: 12px;
    min-width: 180px;
    flex-direction: column;
    z-index: 101;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.open .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
    display: flex;
}

.nav-dropdown-menu a {
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-dim);
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    transition: color 0.2s ease, background 0.2s ease;
}

.nav-dropdown-menu a:hover {
    color: var(--text);
    background: var(--bg-hover);
}

.nav-dropdown-menu a.nav-active {
    color: var(--text);
}


.paper-link {
    font-family: var(--mono);
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    text-decoration: none;
    transition: color 0.3s ease;
}

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




/* ===== STATS BAR ===== */

.stats-bar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px clamp(2rem, 5vw, 6rem);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
}

.stat-block {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-right: 2rem;
}

.stat-icon {
    width: 28px;
    height: 28px;
    color: var(--accent);
    opacity: 0.7;
    margin-bottom: 0.25rem;
    display: block;
}

.stat-block-value {
    font-family: var(--mono);
    font-size: 2.2rem;
    font-weight: 500;
    color: var(--accent);
    line-height: 1;
}

.stat-block-label {
    font-size: 0.8rem;
    font-weight: 300;
    color: var(--text-dim);
    line-height: 1.5;
}


/* ===== SCIENCE TEASER ===== */

.science-teaser {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px clamp(2rem, 5vw, 6rem);
}

.teaser-grid {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
    margin-top: 0;
}

.teaser-grid::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--border);
}

.teaser-text h2 {
    font-weight: 500;
    font-size: 1.7rem;
    letter-spacing: -0.01em;
    margin-bottom: 1.2rem;
    color: var(--accent);
}

.teaser-text p {
    font-weight: 300;
    font-size: 0.95rem;
    color: var(--text-dim);
    line-height: 1.8;
    margin-bottom: 1rem;
    max-width: 580px;
}

.teaser-text .paper-link {
    margin-top: 0.5rem;
    display: inline-block;
}

/* Facts sidebar */
.teaser-facts {
    position: sticky;
    top: 100px;
    padding: 1.5rem;
    background: var(--bg-raised);
    border: 1px solid var(--border);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.teaser-fact {
    padding: 0.9rem;
    border-bottom: 1px solid var(--border);
}

.teaser-fact:nth-last-child(-n+2) {
    border-bottom: none;
}

.teaser-fact:nth-child(odd) {
    border-right: 1px solid var(--border);
}

.teaser-fact-value {
    display: block;
    font-family: var(--mono);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: -0.01em;
    margin-bottom: 0.25rem;
}

.teaser-fact-label {
    font-family: var(--mono);
    font-size: 0.65rem;
    font-weight: 300;
    color: var(--text-dim);
    letter-spacing: 0.06em;
}


/* ===== MARKET CONTEXT ===== */

.market-context {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px clamp(2rem, 5vw, 6rem);
}

.market-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.market-item {
    background: var(--bg-raised);
    padding: 2.5rem;
    transition: transform 0.25s ease, background 0.25s ease;
}

.market-item:hover {
    transform: translateY(-3px);
    background: var(--bg-hover);
}

.market-item h3 {
    font-weight: 500;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
    margin-bottom: 0.8rem;
    color: var(--accent);
}

.market-item p {
    font-weight: 300;
    font-size: 0.95rem;
    color: var(--text-dim);
    line-height: 1.7;
}

.market-item strong {
    color: var(--text);
    font-weight: 500;
}

.inline-link {
    display: inline-block;
    margin-top: 0.6rem;
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

.inline-link:hover {
    border-bottom-color: var(--accent);
}


/* ===== HOME CTA GRID ===== */

.home-cta {
    padding-top: 100px;
    padding-bottom: 100px;
}

.cta-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    background: none;
}

.cta-card {
    background: var(--bg-raised);
    border: 1px solid var(--border);
    padding: 1.6rem;
    text-decoration: none;
    color: inherit;
    transition: transform 0.25s ease, background 0.25s ease;
    display: flex;
    flex-direction: column;
}

.cta-card:hover {
    transform: translateY(-3px);
    background: var(--bg-hover);
}

.cta-card h3 {
    font-weight: 500;
    font-size: 1rem;
    letter-spacing: -0.01em;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.cta-card p {
    font-weight: 300;
    font-size: 0.8rem;
    color: var(--text-dim);
    line-height: 1.6;
    flex: 1;
}

.cta-arrow {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--accent);
    margin-top: 1.75rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.cta-arrow-glyph {
    display: inline-block;
    font-size: 1.15rem;
    transition: transform 0.3s ease;
}

.cta-card:hover .cta-arrow {
    border-top-color: var(--accent);
}

.cta-card:hover .cta-arrow-glyph {
    transform: translateX(4px);
}



/* ===== SCROLL REVEAL ===== */

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    #network-bg {
        display: none;
    }
}


/* ===== FOOTER ===== */

footer {
    padding: 0 clamp(2rem, 5vw, 6rem);
    border-top: 1px solid var(--border);
    margin-top: 0;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.footer-brand .logo {
    display: block;
    margin-bottom: 0.3rem;
}

.footer-contact a {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--text-dim);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-contact a:hover {
    color: var(--text);
}

.footer-social {
    display: flex;
    gap: 1.5rem;
}

.footer-social a {
    font-family: var(--mono);
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-dim);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    padding: 0.5rem 0;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.footer-bottom span {
    font-family: var(--mono);
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 0.06em;
    color: var(--text-dim);
    margin-right: auto;
}

.footer-bottom a {
    font-family: var(--mono);
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 0.06em;
    color: var(--text-dim);
    text-decoration: none;
    transition: color 0.3s ease;
}

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


/* ===== RESPONSIVE ===== */

/* ===== HAMBURGER MENU ===== */

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 101;
    min-width: 44px;
    min-height: 44px;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--text-dim);
    margin: 5px 0;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4.5px, 4.5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4.5px, -4.5px);
}

/* Overlay behind mobile nav */
.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 98;
}

.nav-overlay.visible {
    display: block;
}


/* ===== TABLET (769–1024px) ===== */

@media (max-width: 1024px) {
    .program-grid,
    .market-grid {
        grid-template-columns: 1fr 1fr;
    }

    .stats-bar {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }

    .teaser-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .teaser-grid::before {
        display: none;
    }

    .teaser-facts {
        position: static;
    }
}


/* ===== MOBILE (≤768px) ===== */

@media (max-width: 768px) {
    html {
        font-size: 17px;
    }

    .nav-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 260px;
        height: 100vh;
        height: 100dvh;
        background: rgba(6, 6, 6, 0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-left: 1px solid var(--border);
        flex-direction: column;
        padding: 100px 2rem 2rem;
        padding-bottom: calc(2rem + env(safe-area-inset-bottom));
        gap: 0;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 99;
        overflow-y: auto;
    }

    .nav-links.open {
        transform: translateX(0);
    }

    .nav-links a {
        font-size: 0.8rem;
        padding: 0.75rem 0;
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    /* Dropdown nav — flatten for mobile */
    .nav-dropdown {
        display: contents;
    }

    .nav-dropdown-trigger {
        display: none;
    }

    .nav-dropdown .nav-dropdown-menu {
        display: contents;
        position: static;
        background: none;
        border: none;
        padding: 0;
        min-width: 0;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .nav-dropdown-menu a {
        font-size: 0.8rem;
        padding: 0.75rem 0;
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    .process-item {
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero {
        padding-top: 120px;
        padding-bottom: 70px;
    }

    .process {
        padding-top: 60px;
        padding-bottom: 60px;
    }

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
        padding-top: 50px;
        padding-bottom: 50px;
    }

    .stat-block {
        padding-right: 0;
    }

    .stat-block-value {
        font-size: 1.8rem;
    }

    .stat-block-label {
        font-size: 0.75rem;
    }

    .market-context {
        padding-top: 60px;
        padding-bottom: 60px;
    }

    .market-grid {
        grid-template-columns: 1fr;
    }

    .home-cta {
        padding-top: 60px;
        padding-bottom: 60px;
    }

    .cta-grid {
        grid-template-columns: 1fr;
    }

    /* Bump small mono labels for readability */
    .section-label {
        font-size: 0.85rem;
    }

    .program-status {
        font-size: 0.7rem;
    }

    .paper-link {
        font-size: 0.75rem;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
    }

    /* Footer mobile */
    .footer-inner {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .footer-social {
        gap: 1.2rem;
    }

    footer {
        padding-bottom: env(safe-area-inset-bottom);
    }

    /* Prevent iOS zoom on form focus (requires ≥16px) */
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px;
    }

    /* Touch-friendly buttons */
    .contact-submit,
    .cta-card,
    .filter-pill {
        min-height: 44px;
    }
}


/* ===== SMALL PHONES (≤375px) ===== */

@media (max-width: 375px) {
    html {
        font-size: 16px;
    }

    section {
        padding-left: 1.2rem;
        padding-right: 1.2rem;
    }

    .divider {
        padding-left: 1.2rem;
        padding-right: 1.2rem;
    }

    nav {
        padding: 0 1.2rem;
    }

    footer {
        padding-left: 1.2rem;
        padding-right: 1.2rem;
    }

    .stats-bar {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding-left: 1.2rem;
        padding-right: 1.2rem;
    }

    .stat-block-value {
        font-size: 1.5rem;
    }
}


/* ===== ZENODO METRICS STRIP (homepage) ===== */

.zenodo-strip {
    max-width: 1200px;
    margin: 0 auto;
    padding: 50px clamp(2rem, 5vw, 6rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.zenodo-strip-label {
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.zenodo-strip-stats {
    display: flex;
    gap: 2rem;
    align-items: baseline;
    flex-wrap: wrap;
}

/* Reused from publications.css so the homepage widget matches the
   publications-page summary visually without cross-page CSS coupling. */
.zenodo-strip .pub-stat {
    display: inline-flex;
    align-items: baseline;
    gap: 0.45rem;
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--text-dim);
}

.zenodo-strip .pub-stat-value {
    color: var(--accent);
    font-weight: 500;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
}

.zenodo-strip .pub-stat-label {
    font-weight: 300;
    font-size: 0.7rem;
    letter-spacing: 0.06em;
}

/* Pulsing skeleton placeholder while Zenodo fetch is in flight */
.zenodo-strip .pub-stat-skeleton {
    display: inline-block;
    width: 38px;
    height: 14px;
    background: var(--border);
    border-radius: 2px;
    align-self: center;
    animation: skeleton-pulse 1.4s ease-in-out infinite;
}

@keyframes skeleton-pulse {
    0%, 100% { opacity: 0.45; }
    50% { opacity: 0.85; }
}

@media (prefers-reduced-motion: reduce) {
    .pub-stat-skeleton {
        animation: none;
        opacity: 0.6;
    }
}

@media (max-width: 768px) {
    .zenodo-strip {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        padding: 40px clamp(1.2rem, 5vw, 2rem);
    }

    .zenodo-strip-stats {
        gap: 1.5rem;
    }
}


/* ===== HOVER LIFT (homepage cards) ===== */

.stat-block {
    transition: transform 0.25s ease;
}

.stat-block:hover {
    transform: translateY(-3px);
}

.teaser-fact {
    transition: transform 0.25s ease, background 0.25s ease;
}

.teaser-fact:hover {
    transform: translateY(-3px);
    background: var(--bg-hover);
}


/* ===== FEATURED PREPRINT CARD (homepage) ===== */

.featured-pub {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px clamp(2rem, 5vw, 6rem);
}

.featured-pub-card {
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-left: 2px solid var(--accent);
    padding: 2.5rem;
    transition: transform 0.25s ease, background 0.25s ease;
    max-width: 820px;
}

.featured-pub-card:hover {
    transform: translateY(-3px);
    background: var(--bg-hover);
}

.featured-pub-badge {
    display: inline-block;
    font-family: var(--mono);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    padding: 0.25rem 0.7rem;
    border: 1px solid var(--accent);
    margin-bottom: 1.2rem;
}

.featured-pub-title {
    font-weight: 500;
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    letter-spacing: -0.01em;
    line-height: 1.35;
    color: var(--text);
    margin-bottom: 0.8rem;
}

.featured-pub-desc {
    font-size: 0.95rem;
    font-weight: 300;
    color: var(--text-dim);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    max-width: 680px;
}

.featured-pub-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem 1.2rem;
    align-items: center;
}

.featured-pub-meta-sep {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--text-dim);
    opacity: 0.5;
}

.paper-link--dim {
    color: var(--text-dim);
}

.paper-link--dim:hover {
    color: var(--accent);
}

@media (max-width: 768px) {
    .featured-pub {
        padding: 50px clamp(1.2rem, 5vw, 2rem);
    }

    .featured-pub-card {
        padding: 1.75rem;
    }
}


/* ===== PRINT ===== */

@media print {
    #network-bg,
    nav,
    .nav-overlay,
    .skip-link {
        display: none !important;
    }

    body {
        background: white;
        color: black;
        font-size: 12pt;
    }

    section, .divider, footer {
        position: static;
    }

    a[href^="http"]::after {
        content: " (" attr(href) ")";
        font-size: 0.75em;
        color: #555;
    }
}