/* ==========================================================================
   Pasta Lab
   Programming languages, AI, Security, Trust, and Assurance
   ========================================================================== */

/* --- Fonts ---------------------------------------------------------------- */

@font-face {
  font-family: 'Space Grotesk';
  src: url('../assets/fonts/space-grotesk-latin.woff2') format('woff2');
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
  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+2074, U+20AC, U+2122, U+2191,
    U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('../assets/fonts/jetbrains-mono-latin.woff2') format('woff2');
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
  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+2074, U+20AC, U+2122, U+2191,
    U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* --- Tokens --------------------------------------------------------------- */

:root {
  /* surfaces and ink */
  --canvas: #f4f4f2;
  --surface: #ffffff;
  --surface-2: #ecece9;
  --surface-inset: #e6e6e2;
  --ink: #17171a;
  --ink-2: #4a4a50;
  --ink-3: #5f5f67;
  --line: #e0e0dc;
  --line-strong: #cfcfc9;

  /* one accent, tonal per theme */
  --accent: #b84a1e;
  --accent-hover: #a8431b;
  --accent-on: #ffffff;
  /* For small text sitting on an accent-wash background, where the plain
     accent drops below 4.5:1. */
  --accent-strong: #9a3c17;
  --accent-wash: rgba(184, 74, 30, 0.09);
  --accent-line: rgba(184, 74, 30, 0.28);

  /* brand illustration colours, decoration only */
  --semolina: #fdcf6b;
  --semolina-deep: #dca440;
  --basil: #8cb581;
  --sauce: #f38b5d;

  /* shape: the brand is voxels, so every corner is square */
  --r-sm: 0;
  --r-md: 0;
  --r-lg: 0;
  --r-pill: 0;

  /* depth, tinted with ink rather than black */
  --shadow-sm: 0 1px 2px rgba(23, 23, 26, 0.05);
  --shadow-md: 0 2px 4px rgba(23, 23, 26, 0.04), 0 8px 20px rgba(23, 23, 26, 0.06);
  --shadow-lg: 0 4px 8px rgba(23, 23, 26, 0.05), 0 18px 44px rgba(23, 23, 26, 0.1);

  /* type */
  --font-sans: 'Space Grotesk', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* layout */
  --shell: 1200px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --nav-h: 68px;

  /* motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 260ms;

  color-scheme: light;
}

:root[data-theme='dark'] {
  --canvas: #131315;
  --surface: #1b1b1e;
  --surface-2: #232327;
  --surface-inset: #101012;
  --ink: #edede9;
  --ink-2: #b4b4ba;
  --ink-3: #9a9aa2;
  --line: #2c2c31;
  --line-strong: #3a3a41;

  --accent: #f38b5d;
  --accent-hover: #ffa77c;
  --accent-on: #131315;
  --accent-strong: #f79a70;
  --accent-wash: rgba(243, 139, 93, 0.12);
  --accent-line: rgba(243, 139, 93, 0.32);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.3), 0 8px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.3), 0 18px 44px rgba(0, 0, 0, 0.5);

  color-scheme: dark;
}

/* --- Base ----------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 1.5rem);
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink-2);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  font-synthesis-weight: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.12;
  text-wrap: balance;
}

p { margin: 0 0 1rem; max-width: 68ch; }
p:last-child { margin-bottom: 0; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }

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

ul, ol { margin: 0; padding: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

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

main:focus { outline: none; }

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.skip-link {
  position: absolute;
  left: 0.5rem;
  top: -4rem;
  z-index: 200;
  padding: 0.7rem 1.1rem;
  color: var(--accent-on);
  background: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: top 160ms var(--ease);
}

.skip-link:focus { top: 0.5rem; color: var(--accent-on); }

/* --- Navigation ----------------------------------------------------------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: color-mix(in srgb, var(--canvas) 86%, transparent);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.nav[data-stuck='true'] {
  border-bottom-color: var(--line);
  background: color-mix(in srgb, var(--canvas) 94%, transparent);
}

.nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.02em;
  flex: none;
}

.brand__mark { width: 38px; height: auto; }
.brand__name { font-size: 1.0625rem; }

.brand:hover { color: var(--ink); }
.brand:hover .brand__mark { transform: rotate(-6deg) scale(1.06); }
.brand__mark { transition: transform var(--dur) var(--ease); }

.nav__menu { margin-left: auto; }

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(0.35rem, 1.4vw, 1rem);
  list-style: none;
}

.nav__links a {
  display: block;
  padding: 0.4rem 0.55rem;
  color: var(--ink-2);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--r-sm);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.nav__links a:hover { color: var(--ink); background: var(--surface-2); }
.nav__links a[aria-current='page'] { color: var(--accent); }

.nav__tools { display: flex; align-items: center; gap: 0.35rem; flex: none; }

.icon-btn {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  padding: 0;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.icon-btn:hover { color: var(--ink); background: var(--surface-2); border-color: var(--line); }
.icon-btn svg { width: 19px; height: 19px; fill: currentColor; }

.theme-toggle .theme-toggle__moon { display: none; }
:root[data-theme='dark'] .theme-toggle .theme-toggle__moon { display: block; }
:root[data-theme='dark'] .theme-toggle .theme-toggle__sun { display: none; }

.nav__burger { display: none; }

@media (max-width: 860px) {
  .nav__burger { display: grid; }
  .nav__menu { margin-left: auto; }
  .nav__links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem var(--gutter) 1rem;
    background: var(--canvas);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 180ms var(--ease), transform 180ms var(--ease),
      visibility 180ms;
  }
  .nav__links[data-open='true'] { opacity: 1; transform: none; visibility: visible; }
  .nav__links a { padding: 0.75rem 0.5rem; font-size: 1rem; }
}

/* --- Sections and headings ------------------------------------------------ */

.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }
.section--edge { border-top: 1px solid var(--line); }

.section__head { margin-bottom: clamp(1.75rem, 4vw, 2.75rem); }

.section__head--split {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.section__head h2 { font-size: clamp(1.65rem, 3.2vw, 2.35rem); }
.section__head p { margin-top: 0.85rem; max-width: none; line-height: 1.7; color: var(--ink-2); }

.eyebrow {
  display: block;
  margin-bottom: 0.7rem;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-head { padding-block: clamp(2.5rem, 6vw, 4.25rem) clamp(1.5rem, 3vw, 2.25rem); }
.page-head h1 { font-size: clamp(2.1rem, 5vw, 3.35rem); }
/* Intro copy spans its container so the text edges line up with the cards and
   section blocks below, rather than stopping at the default reading measure. */
.page-head p { margin-top: 1rem; max-width: none; font-size: 1.0625rem; line-height: 1.7; color: var(--ink-2); }

/* --- Buttons -------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease),
    border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: none; }

.btn--primary { background: var(--accent); color: var(--accent-on); }
.btn--primary:hover { background: var(--accent-hover); color: var(--accent-on); }

.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn--ghost:hover { background: var(--surface); border-color: var(--ink-3); color: var(--ink); }

.btn svg { width: 16px; height: 16px; fill: currentColor; flex: none; }

/* --- Hero ----------------------------------------------------------------- */

.hero {
  padding-top: clamp(2rem, 5vw, 4rem);
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
}

.hero__title {
  font-size: clamp(2.9rem, 8.5vw, 5.4rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.hero__lede {
  margin-top: 1.4rem;
  max-width: 46ch;
  font-size: clamp(1.02rem, 1.5vw, 1.15rem);
  color: var(--ink-2);
}

.hero__lede b { color: var(--ink); font-weight: 600; }

.hero__actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.9rem; }

.hero__art {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 240px;
}

.hero__loop {
  width: min(100%, 420px);
  aspect-ratio: 1 / 1;
  background-image: url('../assets/brand/hero-loop-sheet.webp');
  background-repeat: no-repeat;
  background-size: 400% 100%;
  background-position: 0% 0%;
  filter: drop-shadow(0 22px 34px rgba(23, 23, 26, 0.14));
}

:root[data-theme='dark'] .hero__loop { filter: drop-shadow(0 22px 34px rgba(0, 0, 0, 0.55)); }

@media (prefers-reduced-motion: no-preference) {
  .hero__loop { animation: pasta-loop 1.4s steps(1) infinite; }
}

@keyframes pasta-loop {
  0%   { background-position: 0% 0%; }
  25%  { background-position: 33.3333% 0%; }
  50%  { background-position: 66.6666% 0%; }
  75%  { background-position: 100% 0%; }
  100% { background-position: 0% 0%; }
}

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__art { order: -1; }
  .hero__loop { width: min(72vw, 300px); }
}

/* --- The PASTA list ------------------------------------------------------- */

.pasta {
  margin-top: clamp(1.35rem, 3vw, 1.9rem);
  list-style: none;
  display: grid;
  border-top: 1px solid var(--line);
  max-width: 30rem;
}

.pasta__row {
  display: grid;
  grid-template-columns: 1.3rem 1rem 1fr;
  align-items: center;
  gap: 0.72rem;
  padding: 0.46rem 0;
  border-bottom: 1px solid var(--line);
}

.pasta__icon {
  width: 1.3rem;
  height: 1.3rem;
  object-fit: contain;
  transition: transform var(--dur) var(--ease);
}

.pasta__row:hover .pasta__icon { transform: scale(1.12); }

.pasta__letter {
  font-family: var(--font-mono);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1;
  color: var(--accent);
}

.pasta__word {
  font-size: 0.98rem;
  color: var(--ink-2);
  letter-spacing: -0.01em;
}

/* --- Statement ------------------------------------------------------------ */

/* Closes the hero rather than sitting in its own section. */
.statement {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  max-width: min(100%, 52ch);
  font-size: clamp(1.3rem, 2.6vw, 1.95rem);
  font-weight: 500;
  line-height: 1.34;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-wrap: pretty;
}

/* --- Featured project band ------------------------------------------------ */

.feature {
  padding: clamp(1.5rem, 3.5vw, 2.75rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

.feature h3 { font-size: clamp(1.45rem, 2.6vw, 1.95rem); }
.feature p { margin-top: 0.85rem; max-width: none; color: var(--ink-2); line-height: 1.7; }

/* --- Tags and meta chips -------------------------------------------------- */

.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; list-style: none; }

.tag {
  padding: 0.24rem 0.62rem;
  color: var(--ink-3);
  background: var(--surface-2);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
}

.chip-row { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 1.15rem; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.32rem 0.75rem;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.chip:hover { color: var(--accent); border-color: var(--accent-line); background: var(--accent-wash); }

/* --- Filter buttons ------------------------------------------------------- */

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 2rem;
}

.filter {
  padding: 0.42rem 0.95rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.filter:hover { color: var(--ink); border-color: var(--line-strong); }

.filter[aria-pressed='true'] {
  color: var(--accent-on);
  background: var(--accent);
  border-color: var(--accent);
}

.filter__count {
  margin-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  opacity: 0.65;
}

/* --- Publications --------------------------------------------------------- */

.result-count {
  margin: -1rem 0 0;
  color: var(--ink-3);
  font-size: 0.9rem;
}

.pub-year {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2.5rem 0 1.1rem;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.pub-year::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--line);
}

.pub-list { list-style: none; display: grid; gap: 0.5rem; }

.pub {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 1.15rem;
  padding: 1.05rem 1.15rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.pub:hover { border-color: var(--line-strong); box-shadow: var(--shadow-sm); }

.pub__venue {
  align-self: start;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.755rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  overflow-wrap: break-word;
}

.pub__title {
  margin: 0;
  font-size: 1.03rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.012em;
}

.pub__title a { color: var(--ink); text-decoration: none; }
.pub__title a:hover { color: var(--accent); }

.pub__authors {
  margin: 0.4rem 0 0;
  max-width: none;
  font-size: 0.9rem;
  color: var(--ink-3);
  line-height: 1.55;
}

.pub__authors .is-pi { color: var(--ink); font-weight: 600; }

.pub__domains { display: flex; flex-wrap: wrap; gap: 0.3rem; margin-top: 0.6rem; }

.domain {
  padding: 0.12rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-2);
  border: 1px solid var(--line-strong);
}

/* All four read the same. One accent runs the page, and the label text already
   says which domain it is. */

.pub__award {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.55rem;
  padding: 0.2rem 0.6rem;
  color: var(--ink);
  background: color-mix(in srgb, var(--semolina) 34%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--semolina-deep) 40%, transparent);
  border-radius: var(--r-pill);
  font-size: 0.775rem;
  font-weight: 600;
}

.pub__links { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.7rem; }

.pub__link {
  padding: 0.18rem 0.55rem;
  color: var(--ink-2);
  background: var(--surface-2);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 0.735rem;
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.pub__link:hover { color: var(--accent-on); background: var(--accent); }

@media (max-width: 700px) {
  .pub { grid-template-columns: 1fr; gap: 0.5rem; }
  .pub__venue { order: -1; }
}

/* --- News ----------------------------------------------------------------- */

.news-list { list-style: none; display: grid; gap: 0; }

.news-item {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 1.15rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.news-item:first-child { border-top: 1px solid var(--line); }

.news-item__date {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  padding-top: 0.15rem;
}

.news-item__body { color: var(--ink-2); }
.news-item__body strong { color: var(--ink); font-weight: 600; }

.news-item--pinned .news-item__date { color: var(--accent); font-weight: 600; }

@media (max-width: 640px) {
  .news-item { grid-template-columns: 1fr; gap: 0.3rem; }
}

/* --- People --------------------------------------------------------------- */

.style-switch {
  display: inline-flex;
  gap: 0.2rem;
  padding: 0.25rem;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
}

.style-switch button {
  padding: 0.38rem 0.9rem;
  font-family: inherit;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--ink-3);
  background: transparent;
  border: 0;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.style-switch button:hover { color: var(--ink); }

.style-switch button[aria-pressed='true'] {
  color: var(--ink);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.faculty {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(1rem, 2.4vw, 1.75rem);
}

.pi {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.pi:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

/* The three portrait styles have different framing (a bust versus a full
   figure), so the photo is given a definite box and contained inside it.
   Percentages on a grid item would resolve to auto here and overflow. */
.pi__frame {
  position: relative;
  height: 280px;
  background:
    radial-gradient(120% 78% at 50% 100%, var(--accent-wash), transparent 70%),
    var(--surface-inset);
  overflow: hidden;
}

.pi__photo {
  position: absolute;
  top: 1.1rem;
  left: 1.1rem;
  width: calc(100% - 2.2rem);
  height: calc(100% - 1.1rem);
  object-fit: contain;
  object-position: center bottom;
  transition: opacity 220ms var(--ease), transform 320ms var(--ease);
}

.pi__photo.is-swapping { opacity: 0; transform: translateY(6px) scale(0.98); }

.pi__body { padding: 1.15rem 1.25rem 1.35rem; }
.pi__name { font-size: 1.18rem; }
.pi__role { margin: 0.3rem 0 0; font-size: 0.875rem; color: var(--ink-3); }

.pi__affil {
  margin: 0.55rem 0 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
}

.pi__interests {
  margin: 0.75rem 0 0;
  font-size: 0.885rem;
  color: var(--ink-2);
  line-height: 1.55;
}

.pi__links { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 1rem; }

.student-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.5rem;
  list-style: none;
}

.student {
  padding: 0.85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color var(--dur) var(--ease);
}

.student:hover { border-color: var(--accent-line); }
.student__name { display: block; color: var(--ink); font-weight: 600; font-size: 0.97rem; }
.student__name a { color: inherit; text-decoration: none; border-bottom: 1px solid var(--accent-line); }
.student:hover .student__name a { color: var(--accent); border-bottom-color: var(--accent); }
.student__affil { display: block; margin-top: 0.15rem; color: var(--ink-3); font-size: 0.82rem; }
.student__note { color: var(--ink-3); font-size: 0.78rem; font-style: italic; }

/* --- Projects ------------------------------------------------------------- */

.projects { display: grid; gap: clamp(1.25rem, 3vw, 2rem); }

.project {
  padding: clamp(1.35rem, 3vw, 2.25rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

.project__title { font-size: clamp(1.4rem, 2.4vw, 1.8rem); }
.project__tagline { margin-top: 0.55rem; max-width: none; font-size: 1.05rem; color: var(--ink); font-weight: 500; }
.project__body { margin-top: 1rem; }
/* These sit inside a full-width card, so the text tracks the card rather
   than stopping at the default reading measure. */
.project__body p { max-width: none; font-size: 0.975rem; line-height: 1.7; }

.project__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.status {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.62rem;
  color: var(--accent-strong);
  background: var(--accent-wash);
  border: 1px solid var(--accent-line);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project__people {
  margin-top: 1.1rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  font-size: 0.875rem;
  color: var(--ink-3);
  max-width: none;
}

.project__people b { color: var(--ink-2); font-weight: 600; }

/* --- Collaborators -------------------------------------------------------- */

.partner-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: clamp(0.75rem, 1.6vw, 1rem);
}

.partner {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  padding: clamp(1.15rem, 2.2vw, 1.5rem);
  background: var(--surface);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.partner:hover {
  border-color: var(--accent-line);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.partner__logo {
  display: block;
  width: 100%;
  height: 46px;
  margin-bottom: 0.9rem;
  background-color: var(--ink-2);
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: left center;
  mask-position: left center;
  transition: background-color var(--dur) var(--ease);
}

.partner:hover .partner__logo { background-color: var(--accent); }

.partner__mark {
  height: 46px;
  display: flex;
  align-items: center;
  margin-bottom: 0.9rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.6;
}

.partner__name { color: var(--ink); font-weight: 600; font-size: 1rem; }
.partner__where { color: var(--ink-3); font-size: 0.85rem; }

/* Every logo sits in the same 46px band and is scaled by optical weight, so a
   tall glyph and a wide wordmark read as the same size and the names align. */
.logo--perplexity {
  -webkit-mask-image: url('../assets/logos/perplexity.svg');
  mask-image: url('../assets/logos/perplexity.svg');
  -webkit-mask-size: auto 30px; mask-size: auto 30px;
}
.logo--vals {
  -webkit-mask-image: url('../assets/logos/vals.svg');
  mask-image: url('../assets/logos/vals.svg');
  -webkit-mask-size: auto 24px; mask-size: auto 24px;
}
.logo--ethereum {
  -webkit-mask-image: url('../assets/logos/ethereum.svg');
  mask-image: url('../assets/logos/ethereum.svg');
  -webkit-mask-size: auto 34px; mask-size: auto 34px;
}
.logo--amazon {
  -webkit-mask-image: url('../assets/logos/amazon.svg');
  mask-image: url('../assets/logos/amazon.svg');
  -webkit-mask-size: auto 22px; mask-size: auto 22px;
}

/* --- Join page ------------------------------------------------------------ */

.openings {
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.opening {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.5rem;
  padding: clamp(1.25rem, 2.6vw, 1.75rem) 0;
  border-bottom: 1px solid var(--line);
}

.opening__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1rem;
}

.opening__role { font-size: clamp(1.1rem, 2vw, 1.35rem); }

.opening__where {
  padding: 0.18rem 0.6rem;
  color: var(--accent-strong);
  background: var(--accent-wash);
  border: 1px solid var(--accent-line);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.opening__about { margin: 0; max-width: none; color: var(--ink-2); font-size: 0.965rem; line-height: 1.7; }

.contact-note {
  margin-top: clamp(2rem, 4vw, 3rem);
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
}

.contact-note p { max-width: none; line-height: 1.7; }

/* --- Footer --------------------------------------------------------------- */

.footer {
  margin-top: clamp(3rem, 7vw, 5rem);
  padding-block: clamp(2.25rem, 4vw, 3.25rem);
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 4vw, 3rem);
}

.footer__slogan {
  margin-top: 0.85rem;
  max-width: 34ch;
  font-size: 0.925rem;
  color: var(--ink-3);
}

.footer h2 {
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.footer ul { list-style: none; display: grid; gap: 0.45rem; }
.footer ul a { color: var(--ink-2); font-size: 0.92rem; text-decoration: none; }
.footer ul a:hover { color: var(--accent); }

.footer__base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.35rem;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--ink-3);
}

@media (max-width: 700px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__grid > :first-child { grid-column: 1 / -1; }
}

/* --- States --------------------------------------------------------------- */

.state {
  padding: 2.5rem 1.5rem;
  text-align: center;
  color: var(--ink-3);
  background: var(--surface);
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-lg);
}

.state p { margin-inline: auto; }
.state--error { border-color: var(--accent-line); color: var(--ink-2); }

/* --- Reveal on scroll ----------------------------------------------------- */

/* Scoped to .js, set synchronously in the document head, so the page is fully
   readable when scripting is off instead of stuck at zero opacity. */
@media (prefers-reduced-motion: no-preference) {
  .js [data-reveal] {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 620ms var(--ease), transform 620ms var(--ease);
    transition-delay: calc(var(--i, 0) * 70ms);
  }
  .js [data-reveal].is-visible { opacity: 1; transform: none; }

  .js .hero [data-reveal] { transition-duration: 760ms; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* --- Print ---------------------------------------------------------------- */

@media print {
  .nav, .footer, .filters, .hero__art { display: none; }
  body { background: #fff; color: #000; }
}