/* Official Mona Sans webfonts; source revision and OFL license are documented in docs/publishing.md. */
@font-face {
    font-family: 'Mona Sans';
    src: url('../assets/fonts/mona-sans.woff2') format('woff2');
    font-style: normal;
    font-weight: 200 900;
    font-display: swap;
}

@font-face {
    font-family: 'Mona Sans Mono';
    src: url('../assets/fonts/mona-sans-mono.woff2') format('woff2');
    font-style: normal;
    font-weight: 200 900;
    font-display: swap;
}

.workshop-layout { display: grid; grid-template-columns: 280px minmax(0, 1fr); min-height: calc(100dvh - var(--workshop-header-height)); }
.workshop-layout aside { min-width: 0; padding: 1.5rem 1rem 2rem; border-right: 1px solid var(--border-color); }
.workshop-mobile-nav { display: none; }
.workshop-nav { position: sticky; top: calc(var(--workshop-header-height) + 1.5rem); display: flex; flex-direction: column; max-height: calc(100dvh - var(--workshop-header-height) - 3rem); font-size: .875rem; line-height: 1.5; }
.workshop-nav-title { flex-shrink: 0; margin: 0 0 1rem .5rem; font-size: 1rem; font-weight: 600; line-height: 1.5; }
.workshop-nav ol { min-height: 0; overflow-y: auto; overscroll-behavior: contain; list-style: none; padding: 0 0 0 .5rem; margin: 0; }
.workshop-nav li { margin: .125rem 0; }
.workshop-nav li a { display: block; padding: .375rem .75rem; border-radius: 6px; color: var(--text-body); }
.workshop-nav li a:hover { color: var(--text-primary); background: var(--border-color); }
.workshop-nav a[aria-current="page"] { color: var(--selection-color); background: var(--selection-bg); font-weight: 500; }
.workshop-nav a[aria-current="page"]::before { content: ""; position: absolute; top: .5rem; bottom: .5rem; left: -.4375rem; width: 3px; border-radius: 2px; background: var(--action-color); }
.workshop-nav li.workshop-nav-resources { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border-color); }
.workshop-nav .workshop-repo { display: inline-flex; flex-shrink: 0; align-items: center; justify-content: center; gap: .5rem; width: 100%; min-height: 44px; margin-top: 1.25rem; padding: .5rem .75rem; border: 1px solid var(--border-strong); border-radius: 6px; background: var(--bg-light); color: var(--ink); font-size: .875rem; font-weight: 600; line-height: 1.4; transition: background-color .15s ease, border-color .15s ease; }
.workshop-nav .workshop-repo:hover { background: var(--border-color); border-color: var(--border-strong); color: var(--ink); }
.workshop-nav .workshop-repo:active { background: var(--border-strong); }
.workshop-nav .workshop-repo svg { flex-shrink: 0; }
.workshop-nav .workshop-repo:focus-visible, .workshop-site-header .navbar-brand:focus-visible { outline: 2px solid var(--primary-color); outline-offset: 4px; }
.navbar.workshop-site-header { min-height: var(--workshop-header-height); padding: 0; background-color: var(--bg-white); border-bottom: 1px solid var(--action-color); box-shadow: none; }
.workshop-site-header .container { min-height: var(--workshop-header-height); padding: .5rem 1.5rem; }
.workshop-site-header .navbar-brand { margin: 0; padding: 0; font-family: var(--font-display); font-size: 1rem; font-weight: 600; line-height: 1.4; white-space: normal; }
.workshop-site-header .navbar-brand:hover { transform: none; }
.workshop-content { min-width: 0; width: 100%; max-width: 960px; padding: 2rem 3rem 4rem; }
.workshop-heading { padding-bottom: 1.5rem; border-bottom: 1px solid var(--border-color); margin-bottom: 1.5rem; }
.workshop-heading h1 { margin-top: 0; margin-bottom: .75rem; }
.workshop-heading > p { margin-bottom: 0; font-size: 1rem; line-height: 1.6; color: var(--text-secondary); }
.workshop-content h2 { margin-top: 2rem; }
.workshop-content h3 { margin-top: 2rem; font-size: 1.25rem; }
.workshop-content li { margin: .4rem 0; }
.workshop-content p:has(> .btn) { display: flex; flex-wrap: wrap; gap: .5rem; }
.workshop-content :is(h2,h3,h4) { scroll-margin-top: calc(var(--workshop-header-height) + 1.5rem); }
.workshop-content blockquote { margin: 1.5rem 0; padding: 1rem 1.25rem; background: var(--bg-light); border: 1px solid var(--border-color); border-radius: 6px; }
.workshop-content blockquote p:last-child { margin-bottom: 0; }
.workshop-content pre { padding: 1.15rem 1.3rem; background: var(--bg-light); border: 1px solid var(--border-color); border-radius: 6px; overflow-x: auto; font-size: .875rem; line-height: 1.65; }
.workshop-content code { font-family: var(--font-mono); overflow-wrap: anywhere; color: var(--ink); font-size: .88em; }
.workshop-content :not(pre) > code { padding: .15em .35em; background: var(--bg-light); border-radius: 4px; }
.workshop-content pre code { overflow-wrap: normal; font-size: inherit; }
.code-copy-block { position: relative; }
.workshop-content .code-copy-block pre { padding-right: 3.75rem; overflow: visible; }
.workshop-content .code-copy-block pre code { display: block; overflow-x: auto; }
.code-copy-button { position: absolute; top: .375rem; right: .375rem; display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; padding: 0; border: 1px solid transparent; border-radius: 6px; background: transparent; color: var(--text-secondary); cursor: pointer; }
.code-copy-button:hover { background: var(--bg-white); border-color: var(--border-strong); color: var(--primary-color); }
.code-copy-button:active { background: var(--primary-tint); }
.code-copy-button:focus-visible { outline: 2px solid var(--primary-color); outline-offset: 2px; }
.code-copy-button:disabled { cursor: wait; opacity: .65; }
.code-copy-button .code-copied-icon, .code-copy-button[data-state="copied"] .code-copy-icon { display: none; }
.code-copy-button[data-state="copied"] { color: var(--action-color); }
.code-copy-button[data-state="copied"] .code-copied-icon { display: block; }
.code-copy-status { display: block; margin: -.25rem 0 1rem; font-size: .85rem; color: var(--text-secondary); }
.workshop-content table { display: block; max-width: 100%; overflow-x: auto; border-collapse: collapse; margin: 1.5rem 0 2rem; font-size: .875rem; }
.workshop-content th, .workshop-content td { padding: .75rem 1rem; border-bottom: 1px solid var(--border-color); vertical-align: top; min-width: 7rem; }
.workshop-content th { color: var(--ink); background: var(--bg-light); font-weight: 650; }
.workshop-content figure { margin: 2rem 0; }
.workshop-content figure img { width: 100%; height: auto; border: 1px solid var(--border-color); border-radius: 6px; }
.workshop-content figure img[src$=".svg"] { border: 0; border-radius: 0; }
.workshop-content figure.workshop-intro-illustration { max-width: 22rem; margin: 1.5rem 0; }
.workshop-content figcaption { margin-top: .5rem; color: var(--text-secondary); font-size: .875rem; max-width: 70ch; }
.workshop-content details { margin: 1.5rem 0; border: 1px solid var(--border-color); border-radius: 6px; padding: 1rem 1.25rem; }
.workshop-content summary { font-weight: 650; cursor: pointer; }
.workshop-content summary:hover { color: var(--primary-color); }
.workshop-content details[open] summary { margin-bottom: 1rem; }
.workshop-note { border: 1px solid var(--border-strong); padding: 1.2rem 1.4rem; border-radius: 8px; margin: 1.75rem 0; }
.workshop-note p:last-child { margin-bottom: 0; }
.workshop-routes { padding: 0; list-style: none; }
.workshop-routes li { display: flex; align-items: baseline; gap: 1.5rem; padding: 1.15rem 0; border-bottom: 1px solid var(--border-color); }
.workshop-routes a { min-width: 7rem; font-weight: 700; font-size: 1.1rem; }
.workshop-routes span { color: var(--text-secondary); }
.workshop-next { display: flex; justify-content: flex-end; border-top: 1px solid var(--border-color); margin-top: 3rem; padding-top: 1.5rem; font-weight: 650; }
@media (max-width: 991px) {
    .workshop-layout { grid-template-columns: 248px minmax(0, 1fr); }
    .workshop-content { padding-inline: 2rem; }
}
@media (max-width: 767px) {
    .workshop-layout { display: block; }
    .workshop-layout aside { padding: 1rem 1.25rem 0; border: 0; }
    .workshop-desktop-nav { display: none; }
    .workshop-mobile-nav { display: block; }
    .workshop-mobile-nav > summary { cursor: pointer; font-weight: 600; padding: .75rem 1rem; background: var(--bg-light); border: 1px solid var(--border-color); border-radius: 6px; }
    .workshop-mobile-nav[open] > summary { margin-bottom: .75rem; }
    .workshop-nav { position: static; max-height: 60dvh; }
    .workshop-nav-title { display: none; }
    .workshop-nav li a { padding: .75rem .65rem; }
    .workshop-content { padding: 1.5rem 1.25rem 3rem; }
    .workshop-heading h1 { font-size: 2rem; }
    .workshop-site-header .container { padding-inline: 1.25rem; }
    .workshop-routes li { flex-direction: column; gap: .35rem; }
    .workshop-content .code-copy-block pre { padding-left: 1rem; }
}
@media print {
    .workshop-layout { display: block; }
    .workshop-layout aside, .workshop-next { display: none; }
    .code-copy-button { display: none; }
    .workshop-content pre { white-space: pre-wrap; }
    .workshop-content .code-copy-block pre { padding-right: 1.3rem; }
    .workshop-content .code-copy-block pre code { overflow: visible; }
}

/* ==========================================================================
   Shared styles - Bootstrap 5 compatible
   ========================================================================== */

/* Modern CSS Variables */
:root {
    /* GitHub brand foundations, with link and navigation roles from GitHub Docs. */
    --workshop-header-height: 64px;
    --ink: #101411;
    --primary-color: #0055d5;
    --primary-dark: #0040a7;
    --primary-tint: #f2f5f3;
    --accent-bright: #0fbf3e;
    --action-color: #08872b;
    --action-hover: #0a241b;
    --selection-color: var(--ink);
    --selection-bg: var(--bg-light);
    --text-primary: #101411;
    --text-body: #101411;
    --text-secondary: #59635b;
    --mono-meta: #59635b;
    --bg-light: #f2f5f3;
    --bg-white: #ffffff;
    --bg-ink: #101411;
    --border-color: #e4ebe6;
    --border-strong: #b6bfb8;
    --shadow-sm: 0 1px 2px 0 rgba(16, 20, 17, 0.06);
    --shadow-md: 0 6px 16px -6px rgba(16, 20, 17, 0.12);
    --shadow-lg: 0 18px 40px -12px rgba(16, 20, 17, 0.18);
    --shadow-xl: 0 24px 48px -12px rgba(16, 20, 17, 0.22);
    --transition: color .15s ease, background-color .15s ease, border-color .15s ease;
    --font-display: 'Mona Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: var(--font-display);
    --font-mono: 'Mona Sans Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

/* Base Typography */
body {
    font-family: var(--font-body);
    background-color: var(--bg-white);
    color: var(--text-body);
    line-height: 1.6;
    font-size: 16px;
    font-optical-sizing: auto;
    font-variant-ligatures: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding-top: var(--workshop-header-height);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    text-wrap: balance;
    color: var(--ink);
    overflow-wrap: break-word;
}

h1 {
    font-size: 2.5rem;
    font-weight: 460;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

p {
    margin-bottom: 1.25rem;
    color: var(--text-body);
    max-width: 72ch;
    text-wrap: pretty;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    position: relative;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

.workshop-content a:not(.btn),
footer a {
    text-decoration: underline;
    text-underline-offset: .18em;
    text-decoration-thickness: 1px;
}

.workshop-content a:not(.btn):hover {
    text-decoration-thickness: 2px;
}

/* External link icon for content links that open in new tab */
.workshop-content a[target="_blank"]:not(.btn):not(:has(img))::after {
    content: "";
    display: inline-block;
    width: 12px;
    height: 12px;
    margin-left: 4px;
    vertical-align: middle;
    background-color: currentColor;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'%3E%3C/path%3E%3Cpolyline points='15 3 21 3 21 9'%3E%3C/polyline%3E%3Cline x1='10' y1='14' x2='21' y2='3'%3E%3C/line%3E%3C/svg%3E") center / contain no-repeat;
}

a:focus-visible,
summary:focus-visible,
.btn-ink:focus-visible,
.btn-ghost:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
}

/* Skip-to-content link (visible on keyboard focus) */
.skip-link {
    position: fixed;
    top: 0;
    left: 1rem;
    z-index: 1080;
    transform: translateY(-130%);
    padding: 0.65rem 1.1rem;
    background-color: var(--ink);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 0 0 10px 10px;
    box-shadow: var(--shadow-md);
    transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}

.skip-link:focus {
    transform: translateY(0);
    color: #fff;
    outline: 2px solid var(--accent-bright);
    outline-offset: 2px;
}

/* Programmatic focus target after skip link — no focus box on the whole region */
main:focus {
    outline: none;
}

/* Bootstrap 5 Navbar Styles */
.navbar {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    box-shadow: none;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary) !important;
    transition: var(--transition);
}

.navbar-brand:hover {
    color: var(--primary-color) !important;
    transform: scale(1.02);
}

.navbar-nav .nav-link {
    color: var(--text-primary) !important;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem !important;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
    color: var(--primary-color) !important;
}

/* Current/active page - use underline indicator */
.navbar-nav .nav-link.active {
    color: var(--text-primary) !important;
    font-weight: 600;
    border-bottom: 2px solid var(--primary-color);
}

/* Dropdown menus */
.dropdown-menu {
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    border-radius: 8px;
}

.dropdown-item {
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    transition: var(--transition);
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

/* Active items in dropdown menus */
.dropdown-item.active {
    background-color: var(--primary-tint) !important;
    color: var(--primary-dark) !important;
    font-weight: 600;
}

/* External link icon for dropdown links that open in new tab */
.dropdown-menu a[target="_blank"]::after {
    content: "";
    display: inline-block;
    width: 12px;
    height: 12px;
    margin-left: 5px;
    vertical-align: middle;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'%3E%3C/path%3E%3Cpolyline points='15 3 21 3 21 9'%3E%3C/polyline%3E%3Cline x1='10' y1='14' x2='21' y2='3'%3E%3C/line%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

/* Nested submenu in dropdown ("Past projects") */
.dropdown-submenu {
    position: relative;
}

.dropdown-submenu > .dropdown-menu {
    top: 0;
    left: 100%;
    margin-top: -0.5rem;
    margin-left: 0.125rem;
}

.dropdown-submenu > .dropdown-toggle::after {
    float: right;
    margin-top: 0.55em;
    margin-left: 0.5em;
    border-top: 0.3em solid transparent;
    border-right: 0;
    border-bottom: 0.3em solid transparent;
    border-left: 0.3em solid;
}

@media (min-width: 992px) {
    .dropdown-submenu:hover > .dropdown-menu,
    .dropdown-submenu > .dropdown-menu.show {
        display: block;
    }
}

/* Mobile navbar toggler */
.navbar-toggler {
    border: none;
    padding: 0.5rem;
}

.navbar-toggler:focus {
    box-shadow: none;
}

.navbar-toggler:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ===== Home hero (Engineering Notebook) ===== */
/* Home page fills the viewport between navbar and footer, vertically centered */
main.container:has(.home-hero) {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
}

.home-hero {
    width: 100%;
}

.home-hero .row {
    align-items: center;
    row-gap: 2rem;
}

.hero-name {
    font-size: clamp(2.75rem, 1.9rem + 4vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.02;
    margin: 0 0 1.25rem;
    color: var(--ink);
}

.hero-meta {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.005em;
    color: var(--mono-meta);
    margin-bottom: 1.75rem;
    max-width: none;
    line-height: 1.9;
}

.hero-meta span:not(:last-child)::after {
    content: "·";
    margin: 0 0.55rem;
    color: var(--primary-color);
    font-weight: 700;
}

.hero-intro {
    margin-bottom: 1.75rem;
}

.hero-intro p {
    max-width: 54ch;
    margin-bottom: 1rem;
}

.hero-intro p:last-child {
    margin-bottom: 0;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.btn-ink,
.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.875rem;
    min-height: 44px;
    padding: 0.65rem 1rem;
    border-radius: 6px;
    transition: var(--transition);
    cursor: pointer;
}

.btn-ink {
    background: var(--action-color);
    color: #fff;
    border: 1px solid var(--action-color);
}

.btn-ink:hover {
    background: var(--action-hover);
    border-color: var(--action-hover);
    color: #fff;
}

.btn-ghost {
    background: transparent;
    color: var(--ink);
    border: 1px solid var(--border-strong);
}

.btn-ghost:hover {
    background: var(--bg-light);
    border-color: var(--border-strong);
    color: var(--ink);
}

.profile-image {
    border-radius: 18px;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    display: block;
    margin-left: auto;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: min(66vh, 560px);
}

.profile-image:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* Unified monochrome social row */
.social-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.6rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--ink);
    font-weight: 600;
    font-size: 0.9rem;
    background: var(--bg-white);
    transition: var(--transition);
}

.social-link svg {
    width: 18px;
    height: 18px;
    flex: none;
}

.social-link:hover {
    border-color: var(--ink);
    color: var(--ink);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Content Sections */
.content-section {
    margin-bottom: 3rem;
}

ul {
    line-height: 1.8;
}

ul li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

/* Section intro lead (Attic, Projects) */
.attic-intro,
.projects-intro {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 60ch;
    margin-bottom: 2.5rem;
}

/* Biography opening lead */
.bio-lead {
    font-size: 1.2rem;
    line-height: 1.6;
    color: var(--ink);
    max-width: 62ch;
    margin-bottom: 1.75rem;
}

/* Collapsible talks (native <details>/<summary>) */
.talk {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.talk:hover {
    box-shadow: var(--shadow-md);
}

.talk[open] {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.talk > summary {
    display: block;
    list-style: none;
    cursor: pointer;
    position: relative;
    padding: 1.5rem 3.5rem 1.5rem 1.75rem;
    border-radius: 12px;
}

.talk > summary::-webkit-details-marker {
    display: none;
}

.talk > summary:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.talk > summary h3 {
    margin: 0 0 0.5rem;
    transition: color 0.3s ease;
}

.talk > summary:hover h3 {
    color: var(--primary-color);
}

.talk > summary p:last-child {
    margin-bottom: 0;
}

.talk-slides,
.talk-links {
    margin-top: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.talk-slides a,
.talk-links a {
    margin-left: 0.85rem;
}

.talk-slides:has(+ .talk-slides) {
    margin-bottom: 0;
}

.talk-slides + .talk-slides {
    margin-top: 0.35rem;
}

/* Chevron indicator */
.talk > summary::after {
    content: "";
    position: absolute;
    top: 1.9rem;
    right: 1.85rem;
    width: 13px;
    height: 13px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
    transform: rotate(45deg);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.talk:hover > summary::after,
.talk[open] > summary::after {
    border-color: var(--primary-color);
}

.talk[open] > summary::after {
    transform: rotate(-135deg);
}

.talk[open] > summary {
    border-bottom: 1px solid var(--border-color);
    border-radius: 12px 12px 0 0;
}

.talk-body {
    padding: 0.5rem 1.75rem 1.75rem;
}

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

/* Editorial conferences and workshop index */
.conferences-page {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    grid-template-areas:
        "heading heading"
        "talks portrait"
        "workshops workshops"
        "videos videos"
        "contact contact";
    column-gap: 3rem;
    padding-top: 2.75rem;
}

.conferences-header {
    grid-area: heading;
    padding-bottom: 2rem;
}

.conferences-header > div {
    min-width: 0;
}

.conferences-header h1 {
    margin-top: 0;
}

.conferences-header p {
    margin-bottom: 0.75rem;
}

.conferences-portrait {
    grid-area: portrait;
    align-self: start;
    margin-top: 1.75rem;
    width: 100%;
    height: auto;
    border-radius: 12px;
}

.conferences-page > #conferences {
    grid-area: talks;
}

.conferences-page > #workshops {
    grid-area: workshops;
}

.conferences-page > #videos {
    grid-area: videos;
}

.conferences-jump-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding-top: 0.75rem;
    font-size: 0.9375rem;
    font-weight: 600;
}

.conferences-jump-nav a,
.conference-slides a,
.conference-resource-actions a,
.conference-video > a {
    display: inline-flex;
    align-items: center;
    min-height: 2.75rem;
}

.conferences-section {
    padding: 1.75rem 0 0.5rem;
    scroll-margin-top: 100px;
}

.conferences-section > h2 {
    margin: 0 0 0.75rem;
    font-size: 2rem;
}

.conferences-intro {
    font-size: 1rem;
    color: var(--text-secondary);
}

.conference-talk {
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border-color);
}

.conferences-page .talk {
    margin: 0;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
}

.conferences-page .talk > summary {
    min-height: 2.75rem;
    padding: 0 2.125rem 0.5rem 0;
    border: 0;
    border-radius: 0;
}

.conferences-page .talk > summary h3 {
    margin: 0;
    max-width: 55ch;
    font-size: 1.3125rem;
}

.conferences-page .talk > summary::after {
    top: 0.5rem;
    right: 0.25rem;
}

.conferences-page .talk[open] > summary h3 {
    color: var(--primary-color);
}

.conferences-page .talk-body {
    padding: 0 0 0.75rem;
    font-size: 1rem;
}

.conference-talk-description {
    max-width: 74ch;
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

.conference-talk:has(.talk[open]) > .conference-talk-description {
    display: none;
}

.conference-slides .talk-slides {
    margin: 0;
    font-size: 0.875rem;
}

.conference-slides a {
    margin-left: 0.5rem;
    padding: 0 0.25rem;
}

.conference-workshop {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 11rem;
    gap: 2.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.conference-workshop h3 {
    margin: 0 0 0.5rem;
    font-size: 1.4375rem;
}

.conference-workshop p {
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.conference-workshop-meta {
    font: 0.75rem/1.8 var(--font-mono);
    color: var(--mono-meta);
}

.conference-resource-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.125rem;
    font-size: 0.875rem;
}

.conference-primary-link {
    gap: 0.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    white-space: nowrap;
}

.conference-video {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 10px;
}

.conference-video p {
    margin: 0;
    font-size: 0.9375rem;
}

.conference-video .conference-video-title {
    margin-bottom: 0.25rem;
    font-family: var(--font-display);
    font-size: 1.3125rem;
    font-weight: 700;
    color: var(--ink);
}

.conferences-archive,
.conferences-contact {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.conferences-contact {
    grid-area: contact;
    margin-top: 2.25rem;
}

@media (max-width: 767px) {
    .conferences-page {
        grid-template-columns: minmax(0, 1fr);
        grid-template-areas:
            "heading"
            "talks"
            "workshops"
            "videos"
            "contact";
        column-gap: 0;
        padding-top: 1.5rem;
    }

    .conferences-portrait {
        display: none;
    }

    .conferences-jump-nav {
        gap: 1.25rem;
    }

    .conferences-section > h2 {
        font-size: 1.75rem;
    }

    .conference-workshop {
        grid-template-columns: minmax(0, 1fr);
        gap: 0.25rem;
    }

    .conference-resource-actions {
        flex-direction: row;
        align-items: center;
        gap: 1.5rem;
    }

    .conference-video {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .talk,
    .talk > summary h3,
    .talk > summary::after,
    .skip-link {
        transition: none;
    }

    .home-hero .hero-name,
    .home-hero .hero-meta,
    .home-hero .hero-intro,
    .home-hero .hero-actions,
    .home-hero .social-row,
    .home-hero .profile-image,
    .content-section {
        animation: none;
        opacity: 1;
        transform: none;
    }

    .profile-image:hover,
    .social-link:hover,
    .btn-ink:hover,
    .btn-ghost:hover,
    .photo-gallery figure:hover img {
        transform: none;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Footer */
footer {
    margin-top: auto;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-light);
    width: 100%;
}

footer p {
    max-width: none;
    margin: 0 1.25rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

footer a {
    text-decoration: underline;
    font-weight: 600;
}

footer a:focus,
footer a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Horizontal Rules */
hr {
    border: 0;
    border-top: 1px solid var(--border-color);
    margin: 3rem 0;
}

/* Responsive Design - Mobile and Tablet */
@media (max-width: 991.98px) {
    main.container:has(.home-hero) {
        display: block;
    }

    .home-hero {
        padding: 1rem 0 0.5rem;
        text-align: center;
    }

    .home-hero .hero-actions,
    .home-hero .social-row {
        justify-content: center;
    }

    .home-hero .hero-intro p {
        margin-left: auto;
        margin-right: auto;
    }

    .home-hero .profile-image {
        margin: 0 auto 1.5rem;
        max-width: 240px;
        max-height: none;
    }

    /* Mobile navbar styling */
    .navbar-collapse {
        background-color: var(--bg-white);
        padding: 1rem 0;
        border-top: 1px solid var(--border-color);
        margin-top: 0.5rem;
    }

    .navbar-nav .nav-link {
        padding: 0.75rem 1rem !important;
        border-bottom: 1px solid var(--border-color);
    }

    .navbar-nav .nav-link.active {
        border-bottom: 1px solid var(--border-color);
        background-color: var(--primary-tint);
        color: var(--primary-color) !important;
        font-weight: 600;
    }

    .dropdown-menu {
        border: none;
        box-shadow: none;
        padding-left: 1rem;
        background-color: var(--bg-light);
    }

    .dropdown-item {
        padding: 0.75rem 1rem;
    }

    /* Submenu expands inline on mobile instead of flying out */
    .dropdown-submenu > .dropdown-menu {
        position: static;
        top: auto;
        left: auto;
        margin-left: 1rem;
        border: none;
        box-shadow: none;
    }
}

/* Fade-in animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.home-hero .hero-name,
.home-hero .hero-meta,
.home-hero .hero-intro,
.home-hero .hero-actions,
.home-hero .social-row {
    animation: fadeInUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.home-hero .hero-name { animation-delay: 0.05s; }
.home-hero .hero-meta { animation-delay: 0.21s; }
.home-hero .hero-intro { animation-delay: 0.29s; }
.home-hero .hero-actions { animation-delay: 0.37s; }
.home-hero .social-row { animation-delay: 0.45s; }

.home-hero .profile-image {
    animation: fadeIn 0.9s ease-out 0.1s both;
}

.content-section {
    animation: fadeInUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.1s both;
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Photo gallery */
.photo-gallery {
    columns: 3 240px;
    column-gap: 1.25rem;
    margin-top: 2rem;
}

.photo-gallery figure {
    margin: 0 0 1.25rem;
    break-inside: avoid;
}

.photo-gallery img {
    width: 100%;
    height: auto;
    border-radius: 14px;
    box-shadow: var(--shadow-md);
    display: block;
    transition: var(--transition);
}

.photo-gallery figure:hover img {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.photo-gallery figcaption {
    margin-top: 0.55rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    letter-spacing: 0.005em;
}

/* 404 / error page */
.error-page {
    text-align: center;
    padding: 4rem 0 5rem;
}

.error-page h1 {
    font-size: clamp(3rem, 2rem + 5vw, 4.5rem);
    margin-bottom: 0.25rem;
}

.error-page .error-subtitle {
    margin-top: 0;
    color: var(--text-secondary);
    font-weight: 400;
}

.error-page p {
    max-width: 56ch;
    margin-inline: auto;
}

.error-page ul {
    display: inline-block;
    margin: 1rem auto 0;
    text-align: left;
}

.error-page .error-actions {
    margin-top: 2.5rem;
}

/* Container adjustments */
.container {
    width: 100%;
    max-width: 1440px;
    padding-left: 0;
    padding-right: 0;
    margin-inline: auto;
    flex: 1 0 auto;
}