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/* Theme controls share the language switcher's compact layout. */
:root{--page:#fff;--header:rgba(255,255,255,.97);color-scheme:light}
body{background:var(--page)}
.masthead{background:var(--header)}
.nav-controls{display:flex;align-items:center;gap:8px;flex-shrink:0}
.theme-toggle{display:grid;place-items:center;width:31px;height:30px;padding:5px;border:1px solid #dfe5e9;border-radius:4px;color:#52616e;background:none}
.theme-toggle svg{width:17px;height:17px}
.theme-toggle:hover,.language:hover{background:var(--soft)}
.theme-sun{display:none}
:root[data-theme=dark]{color-scheme:dark;--page:#12161c;--header:rgba(18,22,28,.97);--ink:#e0e6ed;--muted:#a6b2bf;--blue:#91bfe2;--line:#2c3541;--soft:#1c2530}
[data-theme=dark] .theme-moon{display:none}
[data-theme=dark] .theme-sun{display:block}
[data-theme=dark] h2,[data-theme=dark] h3{color:#e1eaf3}
[data-theme=dark] nav a,[data-theme=dark] .language,[data-theme=dark] .theme-toggle,[data-theme=dark] .profile-links a,[data-theme=dark] .education-copy p,[data-theme=dark] .discipline{color:#bac6d2}
[data-theme=dark] nav a.active,[data-theme=dark] nav a:hover{color:var(--blue)}
[data-theme=dark] .language,[data-theme=dark] .theme-toggle{border-color:#3b4755}
[data-theme=dark] .handle,[data-theme=dark] .profile-summary,[data-theme=dark] .research-row p,[data-theme=dark] .eyebrow,[data-theme=dark] .sidebar-note,[data-theme=dark] .location,[data-theme=dark] footer,[data-theme=dark] footer a{color:var(--muted)}
[data-theme=dark] .section-index,[data-theme=dark] .row-number{color:#8e9fae}
[data-theme=dark] .research-icon,[data-theme=dark] .university-mark{background:var(--soft);border-color:var(--line);color:#9bbbd3}
[data-theme=dark] .research-row{border-color:var(--line)}
[data-theme=dark] blockquote p{color:#c1d3e1}
[data-theme=dark] blockquote{border-color:#698ea9}
[data-theme=dark] .sidebar-rule{background:#3b4b5c}
[data-theme=dark] .avatar,[data-theme=dark] .skip-link{background:var(--page)}
@media(max-width:650px){.nav-controls{margin-left:auto}.nav-controls .language{margin-left:0}}

/* Graphite surfaces, restrained highlights, and a translucent navigation bar. */
:root[data-theme=dark]{--page:#101114;--header:rgba(16,17,20,.82);--ink:#e8e9ec;--muted:#a4a7ae;--blue:#9dc3e6;--line:#2a2c32;--soft:#1b1d22}
[data-theme=dark] body{background:radial-gradient(ellipse at 15% 0,rgba(107,125,151,.065),transparent 55%),var(--page)}
.masthead{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}
.nav-controls{padding:3px;border-radius:8px}
.theme-toggle,.language{height:30px}
[data-theme=dark] .nav-controls{background:rgba(255,255,255,.025);box-shadow:inset 0 1px 0 rgba(255,255,255,.035)}
[data-theme=dark] .language,[data-theme=dark] .theme-toggle{border-color:#36383e;background:rgba(255,255,255,.025)}
[data-theme=dark] .theme-toggle:hover,[data-theme=dark] .language:hover{background:#2a2d34}
[data-theme=dark] h2,[data-theme=dark] h3{color:#f0f1f3}
[data-theme=dark] blockquote{background:linear-gradient(125deg,#20232a,#191b20);border-left-color:#6c859c;border-radius:0 9px 9px 0;box-shadow:inset 0 1px 0 rgba(255,255,255,.045)}
[data-theme=dark] .research-icon,[data-theme=dark] .university-mark{background:linear-gradient(145deg,#23262d,#1b1d22);border-color:#30333b;box-shadow:inset 0 1px 0 rgba(255,255,255,.04)}
[data-theme=dark] .avatar{border-color:#363940;box-shadow:0 8px 28px rgba(0,0,0,.18)}