/* ===================================================
   Liuyin Yang — Researcher Profile
   "Signal readout" design system

   Voices:
     display  Space Grotesk   headings, name, titles
     body     Inter           prose, descriptions
     mono     JetBrains Mono   data — years, IDs, counts, labels

   Signature: an ambient multi-channel EEG trace in the hero,
   drawn once on load (see script.js), plus a monospace
   "instrument-readout" treatment for every number on the page.
   =================================================== */

:root {
  /* === FONT FAMILIES === */
  --font-display: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;

  /* === TYPE SIZE === */
  --fs-display:    clamp(3rem, 7vw, 4.6rem);
  --fs-section:    clamp(2.1rem, 4.3vw, 3rem);
  --fs-stat:       clamp(2.1rem, 4vw, 2.6rem);
  --fs-h2:         1.5rem;
  --fs-h3:         1.25rem;
  --fs-h3-lg:      1.4rem;
  --fs-nav-brand:  1.125rem;
  --fs-lead:       clamp(1.05rem, 2vw, 1.28rem);
  --fs-body:       1.0625rem;
  --fs-body-sm:    0.9375rem;
  --fs-meta:       0.875rem;
  --fs-label:      0.78rem;
  --fs-tiny:       0.72rem;

  /* === FONT WEIGHT === */
  --fw-regular:    400;
  --fw-medium:     500;
  --fw-semibold:   600;
  --fw-bold:       700;

  /* === LIGHT COLOR === */
  --c-bg:          #fafafc;
  --c-bg-2:        #f2f2f7;
  --c-surface:     #ffffff;
  --c-surface-2:   #f2f2f7;
  --c-text:        #16171d;
  --c-text-2:      #44464f;
  --c-muted:       #666873;
  --c-border:      #e4e4ec;
  --c-border-2:    #eeeef3;
  --c-accent:      #4b3ff0;
  --c-accent-strong:#3a2fd8;
  --c-on-accent:   #ffffff;
  --c-accent-line: rgba(75, 63, 240, 0.22);
  --signal-1:      #4b3ff0;
  --signal-2:      #08b6d4;
  --signal-opacity: 0.30;
  --glow:          none;

  /* === LETTER SPACING === */
  --ls-tight:      -0.03em;
  --ls-snug:       -0.02em;
  --ls-base:       -0.01em;
  --ls-wide:       0.12em;

  /* === LINE HEIGHT === */
  --lh-display:    1.02;
  --lh-snug:       1.1;
  --lh-tight:      1.28;
  --lh-normal:     1.5;
  --lh-relaxed:    1.6;

  /* === EFFECTS === */
  --shadow-sm:     0 1px 3px rgba(20, 22, 40, 0.05);
  --shadow-md:     0 2px 8px rgba(20, 22, 40, 0.06), 0 14px 40px rgba(20, 22, 40, 0.07);
  --shadow-pop:    0 1px 3px rgba(20, 22, 40, 0.12);
  --blur-nav:      saturate(180%) blur(20px);
  --transition:    0.2s ease;

  /* === RADII === */
  --radius-s:      8px;
  --radius-l:      18px;
  --radius-pill:   980px;

  /* === LAYOUT === */
  --maxw:          980px;
  --pad-x:         1.5rem;
  --section-pad:   7rem;
  --nav-h:         58px;
}

/* === DARK COLOR === */
:root[data-theme="dark"] {
  --c-bg:          #0a0b10;
  --c-bg-2:        #0f1017;
  --c-surface:     #15161f;
  --c-surface-2:   #12131b;
  --c-text:        #f1f2f6;
  --c-text-2:      #c3c5d2;
  --c-muted:       #8a8c9b;
  --c-border:      #272936;
  --c-border-2:    #1e202b;
  --c-accent:      #8f88ff;
  --c-accent-strong:#a9a3ff;
  --c-on-accent:   #0a0b10;
  --c-accent-line: rgba(143, 136, 255, 0.30);
  --signal-1:      #8f88ff;
  --signal-2:      #2fd8ef;
  --signal-opacity: 0.42;
  --glow:          0 0 22px rgba(47, 216, 239, 0.28);
  --shadow-sm:     0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md:     0 2px 10px rgba(0, 0, 0, 0.45), 0 16px 44px rgba(0, 0, 0, 0.5);
  --shadow-pop:    0 1px 3px rgba(0, 0, 0, 0.5);
  --blur-nav:      saturate(160%) blur(20px);
}

/* No-JS fallback: honor the OS preference when no theme is set */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --c-bg:          #0a0b10;
    --c-bg-2:        #0f1017;
    --c-surface:     #15161f;
    --c-surface-2:   #12131b;
    --c-text:        #f1f2f6;
    --c-text-2:      #c3c5d2;
    --c-muted:       #8a8c9b;
    --c-border:      #272936;
    --c-border-2:    #1e202b;
    --c-accent:      #8f88ff;
    --c-accent-strong:#a9a3ff;
    --c-on-accent:   #0a0b10;
    --c-accent-line: rgba(143, 136, 255, 0.30);
    --signal-1:      #8f88ff;
    --signal-2:      #2fd8ef;
    --signal-opacity: 0.42;
    --glow:          0 0 22px rgba(47, 216, 239, 0.28);
    --shadow-sm:     0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md:     0 2px 10px rgba(0, 0, 0, 0.45), 0 16px 44px rgba(0, 0, 0, 0.5);
    --shadow-pop:    0 1px 3px rgba(0, 0, 0, 0.5);
    --blur-nav:      saturate(160%) blur(20px);
  }
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  letter-spacing: var(--ls-base);
  font-feature-settings: "kern", "liga";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--transition), color var(--transition);
}
a { color: var(--c-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
ol, ul { list-style: none; }
button { font: inherit; cursor: pointer; color: inherit; }
.mono { font-family: var(--font-mono); font-size: 0.92em; letter-spacing: 0; }

/* Keyboard focus */
:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: 4px;
}
/* <main> is focused by the skip link (tabindex=-1); no ring around the page */
main:focus { outline: none; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 200;
  background: var(--c-accent);
  color: var(--c-on-accent);
  padding: 0.6rem 1rem;
  border-radius: 0 0 var(--radius-s) 0;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
}
.skip-link:focus { left: 0; text-decoration: none; }

/* ===================================================
   NAV
   =================================================== */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--c-bg) 82%, transparent);
  backdrop-filter: var(--blur-nav);
  -webkit-backdrop-filter: var(--blur-nav);
  border-bottom: 1px solid var(--c-border-2);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 1rem;
}
.nav-name {
  font-family: var(--font-display);
  font-size: var(--fs-nav-brand);
  font-weight: var(--fw-bold);
  color: var(--c-text);
  letter-spacing: var(--ls-snug);
  margin-right: auto;
  transition: opacity var(--transition);
}
.nav-name:hover { text-decoration: none; opacity: 0.65; }
.nav-links {
  display: flex;
  gap: 1.6rem;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  color: var(--c-text-2);
  letter-spacing: 0;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--c-accent); text-decoration: none; }
.nav-links a.active { color: var(--c-accent); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-pill);
  background: var(--c-surface);
  color: var(--c-text-2);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--c-accent); border-color: var(--c-accent-line); }
.icon-sun { display: none; }
.icon-moon { display: block; }
:root[data-theme="dark"] .icon-sun { display: block; }
:root[data-theme="dark"] .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .icon-sun { display: block; }
  :root:not([data-theme]) .icon-moon { display: none; }
}

/* ===================================================
   HERO
   =================================================== */
.hero {
  position: relative;
  padding: 5rem 0 5.5rem;
  text-align: center;
  overflow: hidden;
  border-bottom: 1px solid var(--c-border-2);
}
.hero-signal {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: var(--signal-opacity);
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 22%, #000 60%, transparent 100%);
          mask-image: linear-gradient(180deg, transparent 0%, #000 22%, #000 60%, transparent 100%);
}
.hero-signal svg { width: 100%; height: 100%; display: block; }
.hero-signal path {
  fill: none;
  stroke-width: 1.4;
  vector-effect: non-scaling-stroke;
  filter: var(--glow);
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
.photo {
  width: 116px;
  height: 116px;
  border-radius: 50%;
  margin: 0 auto 1.7rem;
  overflow: hidden;
  background: var(--c-surface-2);
  box-shadow: var(--shadow-md);
  outline: 3px solid var(--c-surface);
  outline-offset: 0;
}
.photo img { width: 100%; height: 100%; object-fit: cover; }
.photo-fallback {
  display: none;
  width: 100%; height: 100%;
  align-items: center; justify-content: center;
  background: linear-gradient(140deg, #4b3ff0 0%, #067a96 100%);
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: var(--fw-bold);
  color: #fff;
  letter-spacing: var(--ls-snug);
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  color: var(--c-muted);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  margin-bottom: 1.1rem;
}
.hero-name {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: var(--fw-bold);
  color: var(--c-text);
  letter-spacing: var(--ls-tight);
  line-height: var(--lh-display);
  margin-bottom: 1.3rem;
  text-wrap: balance;
}
.hero-tagline {
  font-family: var(--font-body);
  font-size: var(--fs-lead);
  font-weight: var(--fw-regular);
  color: var(--c-text-2);
  letter-spacing: var(--ls-base);
  line-height: 1.5;
  max-width: 40rem;
  margin: 0 auto 1.8rem;
  text-wrap: pretty;
}
.hero-tagline strong { color: var(--c-text); font-weight: var(--fw-semibold); }
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.2rem;
}
.hero-tags li {
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  font-weight: var(--fw-medium);
  color: var(--c-text-2);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  padding: 0.34rem 0.8rem;
  border-radius: var(--radius-pill);
  letter-spacing: 0;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.8rem;
}
.btn-primary {
  display: inline-block;
  background: var(--c-accent);
  color: var(--c-on-accent);
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-base);
  padding: 0.72rem 1.5rem;
  border-radius: var(--radius-pill);
  transition: background var(--transition), transform var(--transition);
}
.btn-primary:hover {
  background: var(--c-accent-strong);
  text-decoration: none;
  color: var(--c-on-accent);
  transform: translateY(-1px);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  color: var(--c-text-2);
  padding: 0.72rem 0.6rem;
  transition: color var(--transition);
}
.btn-ghost:hover { color: var(--c-accent); text-decoration: none; }

/* ===================================================
   SECTION
   =================================================== */
.section {
  padding: var(--section-pad) 0;
  border-top: 1px solid var(--c-border-2);
}
.section--alt { background: var(--c-bg-2); }
.section-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
.section-kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  color: var(--c-accent);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  margin-bottom: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.section-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: currentColor;
  display: inline-block;
  opacity: 0.7;
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--fs-section);
  font-weight: var(--fw-bold);
  color: var(--c-text);
  letter-spacing: var(--ls-snug);
  line-height: var(--lh-snug);
  margin-bottom: 3rem;
}

/* ===================================================
   CV / TIMELINE
   =================================================== */
.cv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem 3rem;
}
.cv-block--full {
  grid-column: 1 / -1;
  margin-top: 1rem;
}
.cv-block-title {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  color: var(--c-muted);
  margin-bottom: 1.5rem;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}
.timeline-item {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 1.1rem;
}
.tl-year {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  color: var(--c-muted);
  letter-spacing: 0;
  padding-top: 3px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.tl-body { min-width: 0; }
.tl-role {
  font-family: var(--font-display);
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  color: var(--c-text);
  letter-spacing: var(--ls-base);
  margin-bottom: 3px;
}
.tl-inst {
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-regular);
  color: var(--c-text-2);
  margin-bottom: 5px;
}
.tl-note {
  font-size: var(--fs-meta);
  color: var(--c-muted);
  line-height: var(--lh-normal);
}

.skills {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 1rem 1.5rem;
  align-items: baseline;
}
.skill-cat {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
}
.skill-list {
  font-size: var(--fs-body-sm);
  color: var(--c-text-2);
  line-height: 1.8;
}
.skill-list span:not(:last-child)::after {
  content: " · ";
  color: var(--c-border);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2.8rem;
  background: transparent;
  border: 1px solid var(--c-border);
  color: var(--c-text);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  padding: 0.65rem 1.3rem;
  border-radius: var(--radius-pill);
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.btn-secondary:hover {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: var(--c-on-accent);
  text-decoration: none;
}

/* ===================================================
   STATS
   =================================================== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding: 1.8rem;
  background: var(--c-surface);
  border: 1px solid var(--c-border-2);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-sm);
  margin-bottom: 0.9rem;
}
.stat {
  text-align: center;
  padding: 0 0.5rem;
  border-right: 1px solid var(--c-border-2);
}
.stat:last-child { border-right: none; }
.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-stat);
  font-weight: var(--fw-semibold);
  color: var(--c-text);
  letter-spacing: var(--ls-snug);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 0.5rem;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-regular);
  color: var(--c-muted);
  letter-spacing: 0;
}
.stats-foot {
  text-align: right;
  margin: 0 0.25rem 2.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  color: var(--c-muted);
}
.stats-foot a {
  color: var(--c-muted);
  border-bottom: 1px solid var(--c-border);
  padding-bottom: 1px;
  transition: color var(--transition), border-color var(--transition);
}
.stats-foot a:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
  text-decoration: none;
}

/* ===================================================
   FILTERS (segmented control)
   =================================================== */
.filters {
  display: inline-flex;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-2);
  border-radius: var(--radius-pill);
  padding: 4px;
  margin-bottom: 2.2rem;
  gap: 2px;
  flex-wrap: wrap;
}
.filter-btn {
  background: transparent;
  border: none;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  color: var(--c-text-2);
  letter-spacing: 0;
  padding: 0.46rem 1rem;
  border-radius: var(--radius-pill);
  transition: background var(--transition), box-shadow var(--transition), color var(--transition);
}
.filter-btn:hover { color: var(--c-text); }
.filter-btn.active {
  background: var(--c-surface);
  color: var(--c-accent);
  box-shadow: var(--shadow-pop);
}

/* ===================================================
   ITEMS (publications)
   =================================================== */
.items {
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--c-border-2);
}
.item {
  padding: 1.7rem 0;
  border-top: 1px solid var(--c-border-2);
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 1.5rem;
  align-items: start;
}
.item-year {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  color: var(--c-muted);
  padding-top: 4px;
  font-variant-numeric: tabular-nums;
}
.item-body { min-width: 0; }
.item-flag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  font-weight: var(--fw-semibold);
  color: var(--c-accent);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.item-title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: var(--fw-semibold);
  color: var(--c-text);
  letter-spacing: var(--ls-base);
  line-height: var(--lh-tight);
  margin-bottom: 0.5rem;
}
.item-authors {
  font-size: var(--fs-meta);
  color: var(--c-text-2);
  line-height: var(--lh-normal);
  margin-bottom: 0.3rem;
}
.item-authors strong { color: var(--c-accent); font-weight: var(--fw-semibold); }
.item-desc {
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-regular);
  color: var(--c-text-2);
  line-height: var(--lh-relaxed);
  margin: 0.6rem 0;
  max-width: 62ch;
}
.item-desc strong { font-weight: var(--fw-semibold); color: var(--c-text); }
.item-venue {
  font-size: var(--fs-meta);
  color: var(--c-muted);
  line-height: var(--lh-normal);
  margin-bottom: 0.65rem;
}
.item-foot {
  display: flex;
  gap: 1.1rem;
  align-items: center;
  flex-wrap: wrap;
}
.item-cites {
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  color: var(--c-muted);
  font-variant-numeric: tabular-nums;
}
.item-link {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  color: var(--c-accent);
  transition: opacity var(--transition);
}
.item-link:hover { opacity: 0.7; }
.item-meta-right {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: flex-end;
  padding-top: 4px;
}
.item-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  font-weight: var(--fw-medium);
  color: var(--c-text-2);
  background: var(--c-surface);
  border: 1px solid var(--c-border-2);
  padding: 0.28rem 0.7rem 0.28rem 0.6rem;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  letter-spacing: 0;
}
.item-tag::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--hue, var(--c-muted));
  flex-shrink: 0;
}
.item-tag[data-kind="journal"]    { --hue: #12b76a; }
.item-tag[data-kind="conference"] { --hue: #3b82f6; }
.item-tag[data-kind="workshop"]   { --hue: #f59e0b; }
.item-tag[data-kind="preprint"]   { --hue: #a855f7; }
.item-tag[data-kind="dataset"]    { --hue: #06b6d4; }

/* Featured (latest) publication */
.item--featured {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-accent);
  border-radius: var(--radius-l);
  padding: 1.9rem 1.8rem;
  margin-bottom: 0.4rem;
  box-shadow: var(--shadow-sm);
}
.item--featured .item-title { font-size: var(--fs-h3-lg); }

.item.hidden { display: none; }

/* Border model that survives filtering: only the first visible item
   after a visible featured card is borderless; the list is closed by
   the .items bottom border regardless of which items are hidden. */
.item--featured:not(.hidden) ~ .item:not(.hidden) { border-top: none; }
.item:not(.item--featured):not(.hidden) ~ .item:not(.hidden) { border-top: 1px solid var(--c-border-2); }

.items-empty {
  padding: 2.5rem 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--fs-body-sm);
  color: var(--c-muted);
}

/* ===================================================
   AWARDS
   =================================================== */
.awards {
  display: flex;
  flex-direction: column;
}
.award {
  padding: 1.5rem 0;
  border-top: 1px solid var(--c-border-2);
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 1.5rem;
}
.award:last-child { border-bottom: 1px solid var(--c-border-2); }
.award-year {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  color: var(--c-muted);
  padding-top: 4px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.award-name {
  font-family: var(--font-display);
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  color: var(--c-text);
  letter-spacing: var(--ls-base);
  margin-bottom: 4px;
}
.award-source {
  font-size: var(--fs-meta);
  color: var(--c-muted);
  line-height: var(--lh-normal);
}

/* ===================================================
   CONNECT
   =================================================== */
.connect {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}
.connect-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  color: var(--c-muted);
  margin-bottom: 1rem;
}
.connect-email {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: var(--fw-semibold);
  color: var(--c-accent);
  letter-spacing: var(--ls-base);
  margin-bottom: 1rem;
  word-break: break-word;
}
.connect-email:hover { text-decoration: underline; }
.connect-address {
  font-size: var(--fs-body-sm);
  color: var(--c-muted);
  line-height: 1.6;
}
.social-list {
  display: flex;
  flex-direction: column;
}
.social-list li { border-top: 1px solid var(--c-border-2); }
.social-list li:last-child { border-bottom: 1px solid var(--c-border-2); }
.social-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.95rem 0;
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-medium);
  color: var(--c-text);
  transition: color var(--transition), padding var(--transition);
}
.social-list a:hover {
  color: var(--c-accent);
  text-decoration: none;
  padding-left: 0.35rem;
}

/* ===================================================
   FOOTER
   =================================================== */
.footer {
  border-top: 1px solid var(--c-border-2);
  padding: 2.2rem var(--pad-x);
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  color: var(--c-muted);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.7rem;
}
.footer-sep { color: var(--c-border); }

/* ===================================================
   SCROLL REVEAL (progressive enhancement)
   =================================================== */
html.reveal-ready .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
html.reveal-ready .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ===================================================
   RESPONSIVE
   =================================================== */
@media (max-width: 760px) {
  :root {
    --section-pad: 4.5rem;
    --pad-x: 1.25rem;
    --nav-h: 54px;
  }

  .nav-links {
    gap: 1rem;
    min-width: 0;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent);
            mask-image: linear-gradient(90deg, #000 88%, transparent);
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-name { font-size: var(--fs-body); }

  .hero { padding: 3.5rem 0 4rem; }
  .photo { width: 100px; height: 100px; margin-bottom: 1.4rem; }

  .section-title { margin-bottom: 2.5rem; }

  .cv-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .cv-block--full { margin-top: 0; }
  .skills { grid-template-columns: 1fr; gap: 0.35rem 1rem; }
  .skill-cat { margin-top: 0.9rem; }
  .skill-cat:first-of-type { margin-top: 0; }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    padding: 1.4rem;
    gap: 1.3rem 0.5rem;
  }
  .stat:nth-child(2) { border-right: none; }
  .stat { padding: 0; }

  .item {
    grid-template-columns: 1fr;
    gap: 0.55rem;
    padding: 1.5rem 0;
  }
  .item-meta-right {
    flex-direction: row;
    align-items: center;
    padding-top: 0;
    order: -1;
  }
  .item--featured { padding: 1.6rem 1.3rem; }

  .award { grid-template-columns: 72px 1fr; gap: 1rem; padding: 1.3rem 0; }

  .connect { grid-template-columns: 1fr; gap: 2.5rem; }
  .connect-email { font-size: var(--fs-h3); }

  .filters { width: 100%; overflow-x: auto; flex-wrap: nowrap; }
}

@media (max-width: 420px) {
  .nav-links { gap: 0.7rem; }
  .nav-links a { font-size: var(--fs-tiny); }
}

/* ===================================================
   REDUCED MOTION
   =================================================== */
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  html.reveal-ready .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .btn-primary:hover { transform: none; }
}