/* ==========================================================================
   Fabien Postel-Vinay — Design System
   Palette: Scholarly navy + citation gold (Academic Journal / Scholarly Publishing)
   Type: Crimson Pro (headings) + Atkinson Hyperlegible (body/UI)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:ital,wght@0,400;0,700;1,400&family=Crimson+Pro:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  /* Color tokens */
  --color-primary: #1E3A5F;
  --color-primary-hover: #16304F;
  --color-on-primary: #FFFFFF;
  --color-secondary: #334155;
  --color-accent: #B45309;
  --color-accent-hover: #92400E;
  --color-on-accent: #FFFFFF;

  --color-background: #F8FAFC;
  --color-foreground: #0F172A;
  --color-card: #FFFFFF;
  --color-card-foreground: #0F172A;
  --color-muted: #E9EEF5;
  --color-muted-foreground: #52606D;
  --color-border: #CBD5E1;
  --color-destructive: #DC2626;
  --color-ring: #1E3A5F;

  /* Songs page — a warmer, distinct accent for the "off the clock" section */
  --color-songs-accent: #9A3412;
  --color-songs-accent-hover: #7C2D12;
  --color-songs-muted: #FDF3EC;

  /* Typography */
  --font-heading: 'Crimson Pro', Georgia, 'Times New Roman', serif;
  --font-body: 'Atkinson Hyperlegible', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --text-xs: 0.8125rem;
  --text-sm: 0.9375rem;
  --text-base: 1.0625rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.5rem;
  --text-4xl: 3.25rem;

  /* Spacing scale (8px rhythm) */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 8rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 18px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 48px rgba(15, 23, 42, 0.12);

  --container-max: 1180px;
  --content-max: 780px;

  --transition-fast: 150ms ease;
  --transition-base: 220ms ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #6C93C0;
    --color-primary-hover: #86A9D0;
    --color-on-primary: #0B1626;
    --color-secondary: #A9B8CC;
    --color-accent: #E3A458;
    --color-accent-hover: #EDBB7E;
    --color-on-accent: #1A1204;

    --color-background: #0B1220;
    --color-foreground: #E7ECF3;
    --color-card: #121B2E;
    --color-card-foreground: #E7ECF3;
    --color-muted: #182338;
    --color-muted-foreground: #93A2B8;
    --color-border: #253453;
    --color-ring: #6C93C0;

    --color-songs-accent: #E08A5C;
    --color-songs-accent-hover: #EDA57F;
    --color-songs-muted: #241811;
  }
}

:root[data-theme="dark"] {
  --color-primary: #6C93C0;
  --color-primary-hover: #86A9D0;
  --color-on-primary: #0B1626;
  --color-secondary: #A9B8CC;
  --color-accent: #E3A458;
  --color-accent-hover: #EDBB7E;
  --color-on-accent: #1A1204;

  --color-background: #0B1220;
  --color-foreground: #E7ECF3;
  --color-card: #121B2E;
  --color-card-foreground: #E7ECF3;
  --color-muted: #182338;
  --color-muted-foreground: #93A2B8;
  --color-border: #253453;
  --color-ring: #6C93C0;

  --color-songs-accent: #E08A5C;
  --color-songs-accent-hover: #EDA57F;
  --color-songs-muted: #241811;
}

:root[data-theme="light"] {
  --color-primary: #1E3A5F;
  --color-primary-hover: #16304F;
  --color-on-primary: #FFFFFF;
  --color-secondary: #334155;
  --color-accent: #B45309;
  --color-accent-hover: #92400E;
  --color-on-accent: #FFFFFF;

  --color-background: #F8FAFC;
  --color-foreground: #0F172A;
  --color-card: #FFFFFF;
  --color-card-foreground: #0F172A;
  --color-muted: #E9EEF5;
  --color-muted-foreground: #52606D;
  --color-border: #CBD5E1;
  --color-ring: #1E3A5F;

  --color-songs-accent: #9A3412;
  --color-songs-accent-hover: #7C2D12;
  --color-songs-muted: #FDF3EC;
}

/* ==========================================================================
   Reset
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--color-background);
  color: var(--color-foreground);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 var(--space-2);
  color: var(--color-foreground);
}

h1 { font-size: var(--text-4xl); font-weight: 700; }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p { margin: 0 0 var(--space-2); }

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

ul, ol { padding-left: 1.25em; }

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

:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

/* ==========================================================================
   Layout helpers
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.prose {
  max-width: var(--content-max);
}

.section {
  padding-block: var(--space-6);
}

.section--tight { padding-block: var(--space-5); }

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  margin-bottom: var(--space-1);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 0.75rem 1.25rem;
  z-index: 200;
  border-radius: 0 0 var(--radius-md) 0;
}
.skip-link:focus {
  left: 0;
}

/* ==========================================================================
   Header / Nav
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-background) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-block: var(--space-2);
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--color-foreground);
  text-decoration: none;
  white-space: nowrap;
}
.logo:hover { color: var(--color-foreground); }
.logo__dot { color: var(--color-accent); }

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__links a {
  color: var(--color-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.4rem 0.2rem;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.nav__links a:hover,
.nav__links a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.nav__links a.nav__songs-link {
  color: var(--color-songs-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  margin-left: var(--space-2);
  padding-left: var(--space-2);
  border-left: 1px solid var(--color-border);
}
.nav__links a.nav__songs-link:hover,
.nav__links a.nav__songs-link[aria-current="page"] {
  color: var(--color-songs-accent-hover);
  border-bottom-color: var(--color-songs-accent);
}

.nav__cta {
  margin-left: var(--space-1);
}

.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.6rem;
  cursor: pointer;
  color: var(--color-foreground);
}

.nav__toggle svg { display: block; width: 22px; height: 22px; }

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  appearance: none;
  -webkit-appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  gap: 0.5em;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-sm);
  line-height: 1;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--color-foreground);
  border-color: var(--color-border);
}
.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--songs {
  background: var(--color-songs-accent);
  color: #FFF7ED;
}
.btn--songs:hover {
  background: var(--color-songs-accent-hover);
  color: #FFF7ED;
  transform: translateY(-1px);
}

.btn--sm { padding: 0.5rem 1rem; font-size: var(--text-xs); min-height: 2.125rem; }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding-block: var(--space-7) var(--space-6);
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 130%;
  background: radial-gradient(60% 60% at 70% 20%, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-6);
  align-items: center;
}

.hero__eyebrow {
  color: var(--color-accent);
  font-weight: 700;
  font-size: var(--text-lg);
  font-family: var(--font-heading);
  font-style: italic;
  margin-bottom: 0.25rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, var(--text-4xl));
  margin-bottom: var(--space-2);
}

.hero__roles {
  font-size: var(--text-lg);
  color: var(--color-secondary);
  margin-bottom: var(--space-3);
  font-weight: 600;
}

.hero__bio {
  font-size: var(--text-base);
  color: var(--color-secondary);
  max-width: 52ch;
  margin-bottom: var(--space-4);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.hero__contacts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 0.5rem 1rem;
  font-size: var(--text-xs);
  color: var(--color-secondary);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
}
.contact-chip:hover { color: var(--color-primary); border-color: var(--color-primary); }
.contact-chip svg { width: 16px; height: 16px; flex-shrink: 0; }

.hero__portrait-wrap {
  position: relative;
  justify-self: center;
}

.hero__portrait {
  width: min(440px, 85vw);
  aspect-ratio: 1317 / 1158;
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
}

.hero__portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__portrait-initials {
  font-family: var(--font-heading);
  font-size: 5rem;
  font-weight: 700;
  color: rgba(255,255,255,0.92);
  letter-spacing: 0.02em;
}

.hero__portrait-note {
  position: absolute;
  bottom: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 0.4rem 0.9rem;
  font-size: var(--text-xs);
  color: var(--color-muted-foreground);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}

.hero__float-card {
  position: absolute;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.9rem;
  box-shadow: var(--shadow-md);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  gap: 0.5em;
}
.hero__float-card svg { width: 18px; height: 18px; color: var(--color-accent); flex-shrink: 0; }
.hero__float-card--1 { top: 6%; left: -6%; }
.hero__float-card--2 { bottom: 10%; right: -8%; }

/* ==========================================================================
   Role cards (Home)
   ========================================================================== */

.role-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.role-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-decoration: none;
  color: inherit;
  display: block;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  box-shadow: var(--shadow-sm);
}
.role-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}
.role-card:hover h3 { color: var(--color-primary); }

.role-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-muted);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-2);
}
.role-card__icon svg { width: 22px; height: 22px; }

.role-card--songs .role-card__icon {
  background: var(--color-songs-muted);
  color: var(--color-songs-accent);
}
.role-card--songs:hover { border-color: var(--color-songs-accent); border-style: dashed; }
.role-card--songs:hover h3 { color: var(--color-songs-accent); }

.role-card p {
  color: var(--color-muted-foreground);
  font-size: var(--text-sm);
  margin-bottom: var(--space-1);
}

.role-card__link {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
}

/* ==========================================================================
   Cards / lists
   ========================================================================== */

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

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

.pub-year {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-accent);
  margin: var(--space-4) 0 var(--space-2);
}
.pub-year:first-child { margin-top: 0; }

.pub-item {
  padding: var(--space-2) 0;
  border-bottom: 1px dotted var(--color-border);
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: var(--space-2);
}
.pub-item:last-child { border-bottom: none; }

.pub-item__num {
  color: var(--color-muted-foreground);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  padding-top: 0.15em;
}

.pub-item__authors {
  font-weight: 600;
  color: var(--color-foreground);
}

.pub-item__title {
  font-style: italic;
}

.pub-item__venue {
  color: var(--color-muted-foreground);
  font-size: var(--text-sm);
}

.bib-actions {
  display: block;
  margin-top: var(--space-1);
}
.bib-copy.is-copied {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}
.bib-copy.is-copy-failed {
  background: var(--color-destructive);
  color: #FFFFFF;
  border-color: var(--color-destructive);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  list-style: none;
  padding: 0;
  margin: var(--space-2) 0 0;
}

.tag {
  background: var(--color-muted);
  color: var(--color-secondary);
  border-radius: var(--radius-pill);
  padding: 0.3rem 0.8rem;
  font-size: var(--text-xs);
  font-weight: 600;
}

/* ==========================================================================
   Papers (working papers)
   ========================================================================== */

.paper-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.paper-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.paper-card__meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
  align-items: baseline;
  margin-bottom: var(--space-1);
}

.paper-card__num {
  font-family: var(--font-heading);
  color: var(--color-accent);
  font-weight: 700;
  font-size: var(--text-sm);
}

.paper-card__status {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-muted-foreground);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.paper-card__authors {
  color: var(--color-muted-foreground);
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
}

.paper-card__desc {
  color: var(--color-secondary);
  margin-top: var(--space-2);
  margin-bottom: var(--space-2);
}

.abstract-toggle {
  margin: 0;
}

/* ==========================================================================
   Course cards (Teaching)
   ========================================================================== */

.course-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-sm);
}

.course-card__level {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-muted);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-1);
}

.numbered-list {
  list-style: none;
  padding: 0;
  margin: var(--space-2) 0;
  counter-reset: item;
}
.numbered-list li {
  counter-increment: item;
  position: relative;
  padding-left: 2.2em;
  margin-bottom: 0.6em;
}
.numbered-list li::before {
  content: counter(item);
  position: absolute;
  left: 0;
  top: 0;
  width: 1.6em;
  height: 1.6em;
  border-radius: 50%;
  background: var(--color-muted);
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--text-xs);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   Vita (positions)
   ========================================================================== */

.position-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.position-list li {
  display: flex;
  gap: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}
.position-list li:last-child { border-bottom: none; }

.position-list li::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  margin-top: 0.5em;
  flex-shrink: 0;
}

/* ==========================================================================
   Songs page
   ========================================================================== */

.songs-hero {
  background: var(--color-songs-muted);
  border-bottom: 1px dashed var(--color-border);
}

.songs-hero .eyebrow { color: var(--color-songs-accent); }

.genre-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.genre-card {
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.genre-card h3 {
  color: var(--color-songs-accent);
  display: flex;
  align-items: center;
  gap: 0.5em;
}

.genre-card__count {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-muted-foreground);
  background: var(--color-muted);
  border-radius: var(--radius-pill);
  padding: 0.15rem 0.6rem;
  margin-left: auto;
}

.track-list {
  list-style: none;
  padding: 0;
  margin: var(--space-2) 0 0;
  color: var(--color-secondary);
  font-size: var(--text-sm);
}
.track-list li {
  padding: 0.3rem 0;
  border-bottom: 1px dotted var(--color-border);
}
.track-list li:last-child { border-bottom: none; }
.track-list li em { color: var(--color-muted-foreground); font-style: italic; }

.link-pending {
  color: var(--color-muted-foreground);
  font-style: italic;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  /* Fixed dark navy regardless of light/dark theme: the text below is hardcoded
     light, so the background must not flip light in dark mode. */
  background: #1E293B;
  color: #E7ECF3;
  padding-block: var(--space-6) var(--space-4);
  margin-top: var(--space-7);
}

.site-footer a { color: #CBD8EC; }
.site-footer a:hover { color: #FFFFFF; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.footer-grid h4 {
  color: #FFFFFF;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-2);
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5em;
  font-size: var(--text-sm);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: var(--space-3);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: #AEBBD1;
}

/* ==========================================================================
   Page header (interior pages)
   ========================================================================== */

.page-header {
  padding-block: var(--space-6) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.page-header p {
  color: var(--color-secondary);
  max-width: var(--content-max);
}

/* Research page: no horizontal separators anywhere on the page */
body.page-research .page-header { border-bottom: none; }
body.page-research .pub-item { border-bottom: none; }

/* Working Papers, Vita, Teaching: no separator under the page title */
body.page-working-papers .page-header,
body.page-vita .page-header,
body.page-teaching .page-header {
  border-bottom: none;
}

/* Home page: separators under section heads, no framed box around pub list */
body.page-home .section-header {
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

/* Home page: more compact "Find me on" cards */
body.page-home .role-card {
  padding: var(--space-3);
}
body.page-home .role-card__icon {
  width: 36px;
  height: 36px;
  margin-bottom: var(--space-1);
}
body.page-home .role-card__icon svg {
  width: 18px;
  height: 18px;
}
body.page-home .role-card h3 {
  margin-bottom: 0.25rem;
}
body.page-home .role-card p {
  margin-bottom: 0.5rem;
}

/* Vita page: tighter vertical rhythm, no framed boxes */
body.page-vita .page-header { padding-block: var(--space-4) var(--space-3); }
body.page-vita .section { padding-block: var(--space-3); }
body.page-vita h2 {
  margin-bottom: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}
body.page-vita .position-list { gap: 0.35rem; }
body.page-vita .position-list li { padding-bottom: 0.35rem; border-bottom: none; }
body.page-vita .role-grid { gap: var(--space-3); }

/* Research page: tighter vertical rhythm — the exhaustive list is long */
body.page-research .page-header { padding-block: var(--space-4) var(--space-3); }
body.page-research .section { padding-block: var(--space-4); }
body.page-research .section-header { margin-bottom: var(--space-3); }
body.page-research .pub-year { margin: var(--space-3) 0 var(--space-1); }
body.page-research .pub-item { padding: var(--space-1) 0; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__portrait-wrap { order: -1; margin-bottom: var(--space-3); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__toggle { display: inline-flex; }
  .nav.is-open .nav__links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-2) var(--space-3) var(--space-3);
    gap: var(--space-2);
  }
  .nav.is-open .nav__links a.nav__songs-link {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
  }
  .role-grid { grid-template-columns: 1fr; }
  .genre-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-3); }
  .pub-item { grid-template-columns: 1fr; }
  .pub-item__num { display: none; }
}

@media (max-width: 480px) {
  .hero__float-card { display: none; }
  h1 { font-size: var(--text-3xl); }
}