/* =========================================================================
   Thomas Wies — homepage theme
   NYU Violet palette, system font stack, no external dependencies.
   ========================================================================= */

:root {
  --nyu-violet: #57068c;
  --nyu-violet-dark: #33064f;
  --nyu-violet-tint: #f4edfa;

  --ink: #1b1b1f;
  --ink-soft: #52525b;
  --ink-faint: #86858f;

  --paper: #ffffff;
  --paper-alt: #f8f7fb;
  --border: #e6e3ec;
  --border-strong: #d4cfe0;

  --pdf: #57068c;
  --pdf-bg: #f1e6f9;
  --award: #a3670a;
  --award-bg: #f7ecd8;
  --talk: #0e7a72;
  --talk-bg: #ddf1ee;
  --slides: #b2540c;
  --slides-bg: #f8e6d4;
  --doi: #3a5aa8;
  --doi-bg: #e6ecf7;

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 18px;

  --shadow-sm: 0 1px 2px rgba(27, 27, 31, 0.06);
  --shadow-md: 0 6px 24px rgba(51, 6, 79, 0.08);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    Helvetica, Arial, sans-serif;

  --header-h: 64px;
  --max-w: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

a {
  color: var(--nyu-violet);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  top: -40px;
  left: 8px;
  background: var(--nyu-violet);
  color: #fff;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 8px;
}

/* ---------- top affiliation strip ---------- */
.affil-strip {
  background: var(--nyu-violet-dark);
  color: #d9c2ef;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.affil-strip .inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 6px 20px;
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.affil-strip a {
  color: #f1e6fb;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.affil-strip a:hover {
  color: #fff;
}

.affil-strip .sep {
  opacity: 0.5;
}

.nyu-logo-link {
  display: flex;
  align-items: center;
  opacity: 0.92;
}

.nyu-logo-link:hover {
  opacity: 1;
}

.nyu-logo {
  display: block;
  height: 16px;
  width: auto;
}

/* ---------- primary nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-nav {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.site-brand:hover {
  text-decoration: none;
  color: var(--nyu-violet);
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: block;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  background: var(--nyu-violet-tint);
  color: var(--nyu-violet);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border-strong);
  background: var(--paper);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-toggle .icon {
  width: 20px;
  height: 20px;
  color: var(--ink);
}

/* ---------- layout shell ---------- */
.page {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
}

.layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) 210px;
  gap: 40px;
  align-items: start;
  padding-top: 32px;
}

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: 230px minmax(0, 1fr);
  }
  .toc {
    display: none;
  }
}

@media (max-width: 760px) {
  .layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* ---------- aside / profile ---------- */
.profile {
  position: static;
}

.profile-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 3px solid var(--paper);
  outline: 1px solid var(--border);
}

.profile-name {
  margin: 16px 0 2px;
  font-size: 1.3rem;
  font-weight: 700;
}

.profile-title {
  margin: 0 0 14px;
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.4;
}

.profile-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}

.profile-badges .pill {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--nyu-violet);
  background: var(--nyu-violet-tint);
  border-radius: 999px;
  padding: 4px 10px;
}

.aside-block {
  margin-top: 26px;
}

.aside-block h3 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-faint);
  margin: 0 0 10px;
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.contact-list a {
  color: var(--ink-soft);
}

.contact-list a:hover {
  color: var(--nyu-violet);
}

.contact-list .icon {
  width: 16px;
  height: 16px;
  flex: none;
  margin-top: 2px;
  color: var(--nyu-violet);
}

.people-group {
  margin-bottom: 14px;
}

.people-group h4 {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 6px;
}

.people-group h4 .icon {
  width: 14px;
  height: 14px;
  color: var(--nyu-violet);
}

.people-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.people-group li {
  font-size: 0.85rem;
}

.people-group.alumni li {
  color: var(--ink-soft);
}

/* ---------- main content ---------- */
main {
  min-width: 0;
}

section {
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.lede {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 62ch;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}

section + section .section-heading,
h2.section-heading:not(:first-child) {
  margin-top: 8px;
}

.section-heading h2 {
  font-size: 1.5rem;
  margin: 0;
  letter-spacing: -0.01em;
}

.section-heading .icon {
  width: 22px;
  height: 22px;
  color: var(--nyu-violet);
}

section {
  margin-top: 48px;
}

h3.sub-heading {
  font-size: 1.05rem;
  margin: 30px 0 12px;
  color: var(--ink);
}

h3.sub-heading:first-of-type {
  margin-top: 22px;
}

/* ---------- publication / entry cards ---------- */
.entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.entry-list.numbered {
  list-style: decimal;
  padding-left: 1.6em;
}

.entry-list.numbered li {
  padding-left: 6px;
}

.entry-list.numbered li::marker {
  color: var(--ink-faint);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}

.entry {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 10px 14px;
  border-radius: var(--radius);
  border: 1px solid transparent;
}

.entry:hover {
  background: var(--paper-alt);
  border-color: var(--border);
}

.entry-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.entry-title > a {
  color: var(--ink);
}

.entry-title > a:hover {
  color: var(--nyu-violet);
}

.entry-badges {
  display: inline-flex;
  gap: 6px;
  margin-left: 8px;
  vertical-align: middle;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  padding: 2px 8px;
  border-radius: 999px;
  line-height: 1.7;
  white-space: nowrap;
}

.badge .icon {
  width: 11px;
  height: 11px;
}

.badge-pdf {
  color: var(--pdf);
  background: var(--pdf-bg);
}

.badge-doi {
  color: var(--doi);
  background: var(--doi-bg);
}

.badge-award {
  color: var(--award);
  background: var(--award-bg);
}

.badge-talk {
  color: var(--talk);
  background: var(--talk-bg);
}

.badge-slides {
  color: var(--slides);
  background: var(--slides-bg);
}

.badge a {
  color: inherit;
}

.entry-authors {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.entry-venue {
  font-size: 0.88rem;
  color: var(--ink-faint);
  font-style: italic;
}

.entry-venue em {
  font-style: italic;
}

/* selected-pubs footer link */
.more-link {
  margin-top: 16px;
  font-size: 0.92rem;
}

/* ---------- talks list ---------- */
.plain-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.plain-list li {
  font-size: 0.92rem;
  color: var(--ink-soft);
  padding-left: 16px;
  position: relative;
}

.plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border-strong);
}

/* ---------- current research projects ---------- */
.project-list {
  display: grid;
  gap: 14px;
}

.project {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.project h4 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.project p {
  margin: 0 0 6px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

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

.project-notes {
  margin: 6px 0 0;
  padding-left: 1.2em;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.project-papers {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
}

.project-papers h5 {
  margin: 0 0 8px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}

.project-papers .entry-list {
  gap: 10px;
}

.project-papers .entry {
  padding: 0;
}

.project-papers .entry:hover {
  background: none;
  border-color: transparent;
}

.project-papers .entry-title {
  font-size: 0.92rem;
}

/* ---------- teaching ---------- */
.course-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.course {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.course h4 {
  margin: 0 0 8px;
  font-size: 0.98rem;
}

.term-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.term-links a {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  background: var(--paper-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 12px;
}

.term-links a:hover {
  color: var(--nyu-violet);
  border-color: var(--nyu-violet);
  background: var(--nyu-violet-tint);
  text-decoration: none;
}

/* ---------- activities ---------- */
.activity-list {
  list-style: none;
  margin: 0 0 10px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.activity-list li {
  font-size: 0.92rem;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.activity-list li:last-child {
  border-bottom: none;
}

/* ---------- table of contents ---------- */
.toc {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  max-height: calc(100vh - var(--header-h) - 40px);
  overflow-y: auto;
  font-size: 0.84rem;
}

.toc h3 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-faint);
  margin: 0 0 10px;
}

.toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc > ul > li {
  margin-bottom: 4px;
}

.toc a {
  display: block;
  color: var(--ink-faint);
  padding: 4px 0 4px 12px;
  border-left: 2px solid transparent;
  font-weight: 600;
}

.toc ul ul a {
  font-weight: 500;
  padding-left: 22px;
  font-size: 0.8rem;
}

.toc a:hover {
  color: var(--nyu-violet);
  text-decoration: none;
}

.toc a.active {
  color: var(--nyu-violet);
  border-left-color: var(--nyu-violet);
}

/* ---------- footer ---------- */
.site-footer {
  margin-top: 70px;
  border-top: 1px solid var(--border);
  background: var(--paper-alt);
}

.site-footer .inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 24px 20px 40px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--ink-faint);
}

.site-footer a {
  color: var(--ink-soft);
}

/* ---------- mobile nav ---------- */
@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 8px;
    box-shadow: var(--shadow-md);
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 14px;
  }
}

/* ---------- dark mode ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #f1eef7;
    --ink-soft: #c7c2d4;
    --ink-faint: #948fa3;
    --paper: #171522;
    --paper-alt: #1e1b2c;
    --paper-translucent: rgba(23, 21, 34, 0.9);
    --border: #322c45;
    --border-strong: #453c60;
    --nyu-violet: #c295e8;
    --nyu-violet-tint: #2a2140;
    --pdf: #c295e8;
    --pdf-bg: #2a2140;
    --doi: #93b0f0;
    --doi-bg: #1f2740;
    --award: #e0ac52;
    --award-bg: #332711;
    --talk: #5fd4c7;
    --talk-bg: #163330;
    --slides: #f0a15f;
    --slides-bg: #362413;
    --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.4);
  }
}

:root[data-theme="dark"] {
  --ink: #f1eef7;
  --ink-soft: #c7c2d4;
  --ink-faint: #948fa3;
  --paper: #171522;
  --paper-alt: #1e1b2c;
  --paper-translucent: rgba(23, 21, 34, 0.9);
  --border: #322c45;
  --border-strong: #453c60;
  --nyu-violet: #c295e8;
  --nyu-violet-tint: #2a2140;
  --pdf: #c295e8;
  --pdf-bg: #2a2140;
  --doi: #93b0f0;
  --doi-bg: #1f2740;
  --award: #e0ac52;
  --award-bg: #332711;
  --talk: #5fd4c7;
  --talk-bg: #163330;
  --slides: #f0a15f;
  --slides-bg: #362413;
  --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.4);
}

.site-header {
  background: var(--paper-translucent, rgba(255, 255, 255, 0.92));
}

/* ---------- print ---------- */
@media print {
  .site-header,
  .toc,
  .affil-strip,
  .nav-toggle,
  .site-footer {
    display: none;
  }
  .layout {
    display: block;
  }
}