/* ==========================================================================
   Thomas Kiely: academic site
   One serif for reading, one sans for interface. A single cobalt accent;
   amber is reserved for "measurement" (the hero figure, Editor's Suggestion).
   ========================================================================== */

:root {
  --bg: #f6f7fa;
  --surface: #ffffff;
  --ink: #1b2130;
  --muted: #586174;
  --rule: #dde1ea;
  --accent: #2a4bd7;
  --accent-ink: #ffffff;
  --measure: #9a5200;
  --measure-bg: #fdf1e0;

  --serif: "Source Serif 4", "Source Serif Pro", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

  --step--1: 0.875rem;
  --step-0: 1.125rem;
  --step-1: 1.4rem;
  --step-2: clamp(1.6rem, 1.3rem + 1vw, 2rem);
  --step-3: clamp(2.6rem, 1.6rem + 4vw, 4.4rem);

  --page: 68rem;
  --measure-w: 42rem;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1220; --surface: #151b2d; --ink: #e7eaf3; --muted: #98a2b8;
    --rule: #26304a; --accent: #8aa2ff; --accent-ink: #0d1220;
    --measure: #f0a64a; --measure-bg: #2a2113;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0d1220; --surface: #151b2d; --ink: #e7eaf3; --muted: #98a2b8;
  --rule: #26304a; --accent: #8aa2ff; --accent-ink: #0d1220;
  --measure: #f0a64a; --measure-bg: #2a2113;
  color-scheme: dark;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: var(--step-0);
  line-height: 1.65;
  font-optical-sizing: auto;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; }
h1, h2, h3 { font-weight: 600; line-height: 1.2; margin: 0; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
a { color: var(--accent); text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; }

.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-ink);
  padding: 0.5rem 1rem; font-family: var(--sans); z-index: 20; }
.skip:focus { left: 0.5rem; top: 0.5rem; }

.container { width: min(100% - 2.5rem, var(--page)); margin-inline: auto; }
.narrow-left { max-width: var(--measure-w); margin-left: max(1.25rem, calc((100% - var(--page)) / 2)); margin-right: auto; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
  font-family: var(--sans);
}
.bar { display: flex; align-items: center; gap: 1.25rem; min-height: 3.5rem; flex-wrap: wrap; padding-block: 0.25rem; }
.brand { font-weight: 600; font-size: 1.05rem; color: var(--ink); text-decoration: none; margin-right: auto; }
.nav-list { display: flex; gap: 1.4rem; flex-wrap: wrap; }
.nav-list a {
  color: var(--muted); text-decoration: none; font-size: 0.95rem; font-weight: 500;
  padding-block: 0.4rem; border-bottom: 2px solid transparent;
}
.nav-list a:hover { color: var(--ink); }
.nav-list a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
.theme-toggle {
  display: grid; place-items: center; width: 2.25rem; height: 2.25rem;
  background: none; border: 1px solid var(--rule); border-radius: 50%; color: var(--muted); cursor: pointer;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--muted); }
.icon-moon { display: none; }
:root[data-theme="dark"] .icon-sun { display: none; }
:root[data-theme="dark"] .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-sun { display: none; }
  :root:not([data-theme="light"]) .icon-moon { display: block; }
}

/* ---------- hero ---------- */
.hero { padding-block: clamp(2.5rem, 6vw, 5rem) clamp(2rem, 4vw, 3.5rem); }
.hero-grid { display: grid; gap: 2.5rem 4rem; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); align-items: center; }
.hero h1 { font-size: var(--step-3); font-weight: 600; line-height: 1.02; letter-spacing: -0.02em; }
.who { display: flex; align-items: center; gap: 1.25rem; margin: 1.6rem 0 1.8rem; font-family: var(--sans); font-size: var(--step--1); color: var(--muted); line-height: 1.45; }
.who p { margin: 0; }
.avatar { width: 7.5rem; height: 7.5rem; aspect-ratio: 1; flex: none; border-radius: 50%; object-fit: cover; border: 1px solid var(--rule); }
.who p { font-size: 0.95rem; }
.lede { font-size: var(--step-1); line-height: 1.5; max-width: 34rem; margin-bottom: 1.6rem; }
.actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.4rem; }
.btn {
  font-family: var(--sans); font-weight: 500; font-size: 0.95rem; text-decoration: none;
  padding: 0.6rem 1.2rem; border-radius: 0.5rem; border: 1px solid var(--rule); color: var(--ink); background: var(--surface);
}
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.inline-links { display: flex; flex-wrap: wrap; gap: 0.4rem 1.2rem; font-family: var(--sans); font-size: var(--step--1); margin: 0; }
.inline-links a { color: var(--muted); }
.inline-links a:hover { color: var(--accent); }

/* hero figure */
.hero-fig { margin: 0; }
.hero-fig .panel {
  display: grid; grid-template-columns: minmax(0, 1fr) 3.2rem; gap: 0.25rem; align-items: stretch;
  background: var(--surface); border: 1px solid var(--rule); border-radius: 0.25rem; padding: 0.5rem 0.4rem 0.5rem 0.6rem;
}
/* width:100% + align-self:start: with the grid's default stretch alignment, browsers other than Chromium
   collapse an aspect-ratio box to zero height. The strip then stretches to this row's height. */
.sphere { position: relative; width: 100%; aspect-ratio: 1 / 1; align-self: start; }
.sphere canvas, .sphere svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.sphere svg { overflow: visible; pointer-events: none; }
.strip { position: relative; }
.strip canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.grat { fill: none; stroke: var(--rule); stroke-width: 1px; vector-effect: non-scaling-stroke; }
.grat.eq { stroke: var(--muted); stroke-opacity: 0.45; }
.outline { fill: none; stroke: var(--muted); stroke-opacity: 0.6; stroke-width: 1px; vector-effect: non-scaling-stroke; }
.pole { fill: var(--muted); }
.axis-label { fill: var(--muted); font-family: var(--serif); font-style: italic; font-size: 11px; }
.trail { fill: none; stroke: var(--measure); stroke-opacity: 0.55; stroke-width: 1.5px; stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.mean-dot { fill: var(--measure); stroke: var(--surface); stroke-width: 0.012px; }
.hero-fig figcaption { font-family: var(--sans); font-size: 0.8rem; line-height: 1.5; color: var(--muted); margin-top: 0.6rem; }
.hero-fig figcaption i, .hero-fig figcaption b { font-family: var(--serif); }
.fig-actions { display: block; margin-top: 0.35rem; }
.fig-actions .linklike { margin-right: 1.1rem; }
/* .sphere, .strip { transition: opacity 0.05s ease; } */
.readout { display: block; margin-top: 0.3rem; font-variant-numeric: tabular-nums; min-height: 1.5em; color: var(--ink); }
.linklike { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; text-underline-offset: 0.2em; cursor: pointer; font-size: inherit; }

/* ---------- sections ---------- */
.block { padding-block: clamp(2.5rem, 5vw, 4rem); border-top: 1px solid var(--rule); }
.block h2 { font-size: var(--step-2); }
.block > .container > h2 { margin-bottom: 1rem; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.section-head a { font-family: var(--sans); font-size: 0.9rem; }
.section-intro { max-width: var(--measure-w); color: var(--muted); margin-bottom: 1.5rem; }

/* research themes: ruled list, not cards */
.themes { border-top: 1px solid var(--rule); }
.theme { display: grid; grid-template-columns: 1fr auto; gap: 0.5rem 2rem; padding-block: 1.25rem; border-bottom: 1px solid var(--rule); align-items: baseline; }
.theme h3 { font-size: 1.3rem; margin-bottom: 0.25rem; }
.theme h3 a { color: var(--ink); text-decoration: none; }
.theme h3 a:hover { color: var(--accent); text-decoration: underline; }
.theme p { margin: 0; color: var(--muted); max-width: var(--measure-w); font-size: 1rem; }
.theme-count { font-family: var(--sans); font-size: var(--step--1); color: var(--muted); white-space: nowrap; }
.theme-count:hover { color: var(--accent); }

/* ---------- publications ---------- */
.pubs { display: grid; gap: 1.6rem; }
.pub-title { font-size: 1.15rem; font-weight: 600; line-height: 1.35; margin-bottom: 0.2rem; }
.pub p { margin: 0; }
.pub-authors { color: var(--muted); font-size: 1rem; }
.pub-authors strong { color: var(--ink); font-weight: 600; }
.pub-venue { font-size: 1rem; margin-top: 0.1rem; }
.pub-links { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.55rem !important; }
.pill {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-family: var(--sans); font-size: 0.8rem; font-weight: 500; text-decoration: none;
  padding: 0.2rem 0.65rem; border: 1px solid var(--rule); border-radius: 999px; color: var(--muted); background: var(--surface);
}
.pill:hover { color: var(--accent); border-color: var(--accent); }
.badge {
  font-family: var(--sans); font-size: 0.75rem; font-weight: 500; color: var(--measure); background: var(--measure-bg);
  padding: 0.1rem 0.5rem; border-radius: 0.3rem; margin-left: 0.4rem; white-space: nowrap;
}

/* teaching entries share the year-column layout of the publications list */
.course p { margin: 0; }
.course-term { font-family: var(--sans); font-size: 0.85rem; color: var(--muted); margin-bottom: 0.15rem !important; }
.course-title { font-size: 1.15rem; font-weight: 600; line-height: 1.35; margin-bottom: 0.2rem; }
.course-meta { color: var(--muted); font-size: 1rem; }
.course-desc { margin-top: 0.35rem !important; font-size: 1rem; max-width: var(--measure-w); }
.links-label { font-family: var(--sans); font-size: 0.8rem; color: var(--muted); align-self: center; margin-right: 0.15rem; }
.page .prose + .pub-group { margin-top: 2rem; }

.page-sub { font-family: var(--sans); color: var(--muted); font-size: 0.95rem; margin-top: 0.5rem; }
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.5rem 0 1rem; font-family: var(--sans); }
.chip { background: var(--surface); border: 1px solid var(--rule); border-radius: 999px; padding: 0.3rem 0.9rem; font-size: 0.875rem; cursor: pointer; color: var(--muted); }
.chip span { margin-left: 0.3rem; opacity: 0.7; }
.chip:hover { border-color: var(--muted); color: var(--ink); }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.pub-group { display: grid; grid-template-columns: 5rem minmax(0, 1fr); gap: 0.75rem 2rem; padding-block: 1.75rem; border-top: 1px solid var(--rule); }
.pub-group[hidden], .pub[hidden] { display: none; }
.pub-year { font-family: var(--sans); font-size: 1rem; font-weight: 500; color: var(--muted); position: sticky; top: 4.75rem; align-self: start; letter-spacing: 0; }
.empty { color: var(--muted); font-family: var(--sans); padding-block: 2rem; }

/* ---------- generic pages ---------- */
.page { padding-block: clamp(2rem, 5vw, 3.5rem) 4rem; }
.page-title { font-size: var(--step-3); margin-bottom: 1.5rem; letter-spacing: -0.02em; }
.prose { max-width: var(--measure-w); }
.page .prose, .page .theme p, .page .course-desc { max-width: none; }
.prose h2 { font-size: var(--step-2); margin: 2.2rem 0 0.8rem; }
.prose h3 { font-size: 1.25rem; margin: 1.8rem 0 0.5rem; }
.prose ul, .prose ol { padding-left: 1.4rem; margin: 0 0 1em; }
.prose ul { list-style: disc; }
.prose li { margin-bottom: 0.3em; }
.prose img { border-radius: 0.25rem; }
.prose blockquote { margin: 1.2em 0; padding-left: 1rem; border-left: 3px solid var(--rule); color: var(--muted); }
.prose table { border-collapse: collapse; width: 100%; font-size: 1rem; }
.prose th, .prose td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--rule); }
.prose code { font-size: 0.9em; background: var(--surface); padding: 0.1em 0.3em; border-radius: 0.25rem; }
.themes { margin-top: 1.5rem; }
.entries { display: grid; gap: 2rem; }
.entry h2 { font-size: 1.3rem; }
.entry .meta { font-family: var(--sans); font-size: var(--step--1); color: var(--muted); margin: 0.2rem 0 0.6rem; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--rule); padding-block: 2rem 3rem; font-family: var(--sans); font-size: var(--step--1); color: var(--muted); margin-top: 2rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.4rem 1.4rem; margin-bottom: 0.8rem; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--accent); }
.fine { margin: 0; }

/* ---------- small screens ---------- */
@media (max-width: 52rem) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-fig { max-width: 28rem; }
  .avatar { width: 6rem; height: 6rem; }
  .pub-group { grid-template-columns: 1fr; }
  .pub-year { position: static; }
  .theme { grid-template-columns: 1fr; }
  .brand { width: 100%; margin-right: 0; }
  .bar { gap: 0.5rem 1rem; padding-block: 0.5rem; }
  .nav-list { gap: 1rem; }
  .theme-toggle { margin-left: auto; }
}

/* ---------- print (handy for the CV page) ---------- */
@media print {
  .site-header, .site-footer, .skip, .chips, .theme-toggle { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  a { color: inherit; text-decoration: none; }
  .pub-year { position: static; }
}