/* =============================================================
   Dr. Laissy — Clean Academic Portfolio
   Design system: warm off-white surfaces, deep navy text,
   muted terracotta accent. Instrument Serif display + Work Sans body.
   ============================================================= */

/* ---------- Design Tokens ---------- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.75rem, 1rem + 5.5vw, 6rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --content-narrow: 640px;
  --content-default: 1040px;
  --content-wide: 1240px;

  --font-display: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --font-body: 'Work Sans', 'Helvetica Neue', system-ui, sans-serif;

  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* LIGHT (default) */
:root,
[data-theme='light'] {
  --color-bg: #f6f3ec;
  --color-surface: #fbf9f4;
  --color-surface-2: #ffffff;
  --color-surface-offset: #ede8dd;
  --color-surface-offset-2: #e3ddce;
  --color-divider: #d9d2c0;
  --color-border: #c9c2af;

  --color-text: #1a2233;
  --color-text-muted: #5b6478;
  --color-text-faint: #97a0b3;
  --color-text-inverse: #f6f3ec;

  --color-primary: #7a2e1e;         /* muted terracotta */
  --color-primary-hover: #5c2216;
  --color-primary-active: #421810;
  --color-primary-highlight: #ecd8cf;

  --color-ink: #1a2233;             /* deep academic navy */
  --color-ink-2: #2a3350;

  --shadow-sm: 0 1px 2px rgba(26, 34, 51, 0.06);
  --shadow-md: 0 6px 20px rgba(26, 34, 51, 0.08);
  --shadow-lg: 0 20px 40px rgba(26, 34, 51, 0.12);
}

/* DARK */
[data-theme='dark'] {
  --color-bg: #14171f;
  --color-surface: #191d27;
  --color-surface-2: #1f232f;
  --color-surface-offset: #212632;
  --color-surface-offset-2: #262c39;
  --color-divider: #2b3140;
  --color-border: #3a4152;

  --color-text: #e8e6df;
  --color-text-muted: #9aa2b4;
  --color-text-faint: #616a7d;
  --color-text-inverse: #14171f;

  --color-primary: #d99277;
  --color-primary-hover: #e6a58a;
  --color-primary-active: #f0b79f;
  --color-primary-highlight: #3a2822;

  --color-ink: #e8e6df;
  --color-ink-2: #c9cddc;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.55);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #14171f;
    --color-surface: #191d27;
    --color-surface-2: #1f232f;
    --color-surface-offset: #212632;
    --color-surface-offset-2: #262c39;
    --color-divider: #2b3140;
    --color-border: #3a4152;
    --color-text: #e8e6df;
    --color-text-muted: #9aa2b4;
    --color-text-faint: #616a7d;
    --color-text-inverse: #14171f;
    --color-primary: #d99277;
    --color-primary-hover: #e6a58a;
    --color-primary-active: #f0b79f;
    --color-primary-highlight: #3a2822;
    --color-ink: #e8e6df;
    --color-ink-2: #c9cddc;
  }
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 300ms ease, color 300ms ease;
}

img, picture, svg { display: block; max-width: 100%; height: auto; }

h1, h2, h3, h4 { text-wrap: balance; line-height: 1.12; color: var(--color-ink); }
p, li { text-wrap: pretty; max-width: 68ch; }

::selection { background: var(--color-primary-highlight); color: var(--color-text); }

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

button { cursor: pointer; background: none; border: none; color: inherit; font: inherit; }
a { color: inherit; text-decoration: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0;
}
.sr-only:focus { position: fixed; top: 1rem; left: 1rem; width: auto; height: auto; clip: auto; padding: .5rem 1rem; background: var(--color-primary); color: #fff; border-radius: var(--radius-sm); z-index: 100; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-12));
}

.section {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  position: relative;
}
.section-alt { background: var(--color-surface); }
.section + .section { border-top: 1px solid var(--color-divider); }

.two-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
}
@media (min-width: 900px) {
  .two-col { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
}

.section-head { max-width: 780px; margin-bottom: clamp(var(--space-10), 6vw, var(--space-16)); }

.section-kicker {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-4);
}
.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-xl);
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin-bottom: var(--space-4);
}
.section-lede {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 62ch;
}
.inline-link { color: var(--color-primary); border-bottom: 1px solid transparent; padding-bottom: 1px; }
.inline-link:hover { border-bottom-color: currentColor; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}
.site-header.is-scrolled { border-bottom-color: var(--color-divider); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-4);
}

.brand { display: inline-flex; align-items: center; gap: var(--space-3); color: var(--color-ink); }
.brand-mark { color: var(--color-primary); }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-family: var(--font-display); font-size: 1.35rem; letter-spacing: -0.01em; }
.brand-sub { font-size: 0.72rem; color: var(--color-text-muted); letter-spacing: 0.06em; text-transform: uppercase; }

.primary-nav {
  display: none;
  gap: clamp(var(--space-4), 2vw, var(--space-8));
  font-size: var(--text-sm);
}
.primary-nav a {
  color: var(--color-text-muted);
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-interactive);
}
.primary-nav a::after {
  content: '';
  position: absolute; left: 0; bottom: -2px;
  height: 1px; width: 0;
  background: var(--color-primary);
  transition: width var(--transition-interactive);
}
.primary-nav a:hover { color: var(--color-ink); }
.primary-nav a:hover::after { width: 100%; }
@media (min-width: 960px) { .primary-nav { display: inline-flex; } }

.header-actions { display: inline-flex; align-items: center; gap: var(--space-3); }
.theme-toggle {
  width: 40px; height: 40px;
  display: inline-grid; place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-ink);
  transition: background var(--transition-interactive), border-color var(--transition-interactive);
}
.theme-toggle:hover { background: var(--color-surface-offset); border-color: var(--color-ink-2); }

.menu-toggle {
  display: inline-flex; flex-direction: column; gap: 4px;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
}
.menu-toggle span { width: 16px; height: 1.5px; background: var(--color-ink); display: block; }
@media (min-width: 960px) { .menu-toggle { display: none; } }

/* Mobile menu */
.mobile-menu-open .primary-nav {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 72px; left: 0; right: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-6) clamp(var(--space-5), 5vw, var(--space-12));
  gap: var(--space-4);
  font-size: var(--text-base);
  z-index: 40;
  box-shadow: var(--shadow-md);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--radius-full);
  transition: background var(--transition-interactive), color var(--transition-interactive), border-color var(--transition-interactive), transform var(--transition-interactive);
}
.btn-primary {
  background: var(--color-primary);
  color: #fbf9f4;
  border: 1px solid var(--color-primary);
}
.btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover { border-color: var(--color-ink-2); background: var(--color-surface-offset); }
.btn-large { padding: var(--space-4) var(--space-8); font-size: var(--text-base); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  padding-block: clamp(var(--space-20), 14vw, var(--space-32));
}
.hero-media { position: absolute; inset: 0; z-index: -2; }
.hero-media img {
  width: 100%; height: 100%; object-fit: cover; object-position: center;
  filter: saturate(0.7) contrast(1.02) brightness(0.72);
}
[data-theme='dark'] .hero-media img { filter: saturate(0.6) contrast(1.02) brightness(0.4); }

.hero-scrim {
  position: absolute; inset: 0; z-index: -1;
  background:
    /* deep vignette for legibility on the left side where text sits */
    linear-gradient(100deg,
      rgba(10, 14, 24, 0.86) 0%,
      rgba(10, 14, 24, 0.72) 40%,
      rgba(10, 14, 24, 0.35) 70%,
      rgba(10, 14, 24, 0.15) 100%),
    /* subtle top-to-bottom shading */
    linear-gradient(180deg,
      rgba(10, 14, 24, 0.25) 0%,
      rgba(10, 14, 24, 0.0) 30%,
      rgba(10, 14, 24, 0.45) 100%);
}

.hero-inner {
  max-width: 820px;
  position: relative;
  color: #f5f1e8;
}
.hero .eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #f2b89a;
  font-weight: 500;
  margin-bottom: var(--space-6);
  text-shadow: 0 1px 2px rgba(0,0,0,0.4);
}
h1.display {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-hero);
  line-height: 1.02;
  letter-spacing: -0.015em;
  color: #f7f4ec;
  margin-bottom: var(--space-5);
  text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}
h1.display em { font-style: italic; color: #f2b89a; }

.hero-sub {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: #e6dfd0;
  margin-bottom: var(--space-8);
  font-style: normal;
  letter-spacing: 0.005em;
  text-shadow: 0 1px 8px rgba(0,0,0,0.4);
}
.hero-sub em { color: #f2b89a; font-style: italic; }

.hero .lede {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: #d9d3c4;
  max-width: 60ch;
  margin-bottom: var(--space-10);
  line-height: 1.65;
  text-shadow: 0 1px 8px rgba(0,0,0,0.3);
}
.hero .btn-primary {
  background: #f2b89a;
  color: #1a1410;
  border-color: #f2b89a;
}
.hero .btn-primary:hover { background: #f4c4ac; border-color: #f4c4ac; color: #1a1410; }
.hero .btn-ghost {
  color: #f5f1e8;
  border-color: rgba(245, 241, 232, 0.4);
  background: rgba(245, 241, 232, 0.05);
  backdrop-filter: blur(4px);
}
.hero .btn-ghost:hover {
  border-color: rgba(245, 241, 232, 0.8);
  background: rgba(245, 241, 232, 0.12);
}

.lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 62ch;
  margin-bottom: var(--space-10);
  line-height: 1.55;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* ---------- About ---------- */
.prose > p + p { margin-top: var(--space-4); }
.prose strong { color: var(--color-ink); font-weight: 600; }

.fact-list {
  margin-top: var(--space-10);
  border-top: 1px solid var(--color-divider);
  list-style: none;
}
.fact-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}
.fact-k {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.fact-v { color: var(--color-ink); font-size: var(--text-sm); }
@media (min-width: 640px) {
  .fact-list li { grid-template-columns: 200px 1fr; gap: var(--space-6); align-items: baseline; }
}

/* ---------- Research grid ---------- */
.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}
.research-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  position: relative;
  transition: border-color var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive);
}
.research-card:hover { border-color: var(--color-primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.card-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}
.research-card h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.35rem;
  line-height: 1.2;
  margin-bottom: var(--space-3);
  color: var(--color-ink);
}
.research-card p { color: var(--color-text-muted); font-size: var(--text-sm); margin-bottom: var(--space-5); }

.tag-list {
  list-style: none;
  display: flex; flex-wrap: wrap; gap: var(--space-2);
}
.tag-list li {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-divider);
}

/* ---------- Publications ---------- */
.pub-list {
  list-style: none;
  border-top: 1px solid var(--color-divider);
}
.pub {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: var(--space-4) var(--space-6);
  align-items: baseline;
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
  transition: background var(--transition-interactive);
}
.pub:hover { background: color-mix(in oklab, var(--color-surface) 60%, transparent); }
.pub-year {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-primary);
}
.pub-body h3 {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-base);
  color: var(--color-ink);
  line-height: 1.35;
  margin-bottom: var(--space-2);
}
.pub-link { color: inherit; border-bottom: 1px solid var(--color-divider); transition: color var(--transition-interactive), border-color var(--transition-interactive); }
.pub-link:hover { color: var(--color-primary); border-bottom-color: currentColor; }
.pub-meta { color: var(--color-text-muted); font-size: var(--text-sm); margin: 0; }
.pub-tag {
  grid-column: 2;
  justify-self: start;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}
@media (min-width: 720px) {
  .pub { grid-template-columns: 80px 1fr auto; }
  .pub-tag { grid-column: auto; justify-self: end; margin-top: 0; }
}
.foot-note {
  margin-top: var(--space-8);
  color: var(--color-text-faint);
  font-size: var(--text-sm);
  font-style: italic;
}

/* ---------- Teaching / courses ---------- */
.course-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.course-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding: var(--space-6);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-interactive), transform var(--transition-interactive);
}
.course-list li:hover { border-color: var(--color-primary); transform: translateX(4px); }
.course-code {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}
.course-body h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.25rem;
  color: var(--color-ink);
  margin-bottom: var(--space-1);
}
.course-body p { color: var(--color-text-muted); font-size: var(--text-sm); }
@media (min-width: 640px) {
  .course-list li { grid-template-columns: 120px 1fr; gap: var(--space-6); align-items: baseline; }
}

/* ---------- Projects grid ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-8);
}
.project-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive);
}
.project-card:hover { border-color: var(--color-primary); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.project-media {
  aspect-ratio: 16 / 9;
  background: var(--color-surface-offset);
  position: relative;
  overflow: hidden;
}
.project-media::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0) 40%, rgba(0,0,0,0.05) 100%);
}
.project-media-1 {
  background:
    repeating-linear-gradient(45deg, transparent 0 12px, color-mix(in oklab, var(--color-primary) 10%, transparent) 12px 13px),
    linear-gradient(135deg, #d9c9a0, #b8a37a);
}
.project-media-2 {
  background:
    radial-gradient(circle at 30% 40%, color-mix(in oklab, var(--color-primary) 22%, transparent) 0%, transparent 45%),
    linear-gradient(135deg, #4a5468, #2b3448);
}
.project-media-3 {
  background:
    repeating-linear-gradient(0deg, transparent 0 20px, rgba(255,255,255,0.06) 20px 21px),
    repeating-linear-gradient(90deg, transparent 0 20px, rgba(255,255,255,0.06) 20px 21px),
    linear-gradient(135deg, #1e3a55, #0f2032);
}
.project-media-4 {
  background:
    linear-gradient(135deg, #c9a683, #8a6a4a);
}
.project-body { padding: var(--space-8); display: flex; flex-direction: column; gap: var(--space-3); }
.project-kind {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 500;
}
.project-card h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.5rem;
  color: var(--color-ink);
  line-height: 1.2;
}
.project-body > p { color: var(--color-text-muted); font-size: var(--text-sm); }

.cv-callout {
  margin-top: clamp(var(--space-12), 6vw, var(--space-20));
  padding: clamp(var(--space-8), 5vw, var(--space-16));
  background: var(--color-ink);
  color: var(--color-text-inverse);
  border-radius: var(--radius-xl);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: center;
}
.cv-callout .section-kicker { color: var(--color-primary); }
.cv-callout h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-xl);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-2);
}
.cv-callout .section-lede { color: color-mix(in oklab, var(--color-text-inverse) 75%, transparent); }
@media (min-width: 800px) {
  .cv-callout { grid-template-columns: 1fr auto; }
}

/* ---------- Contact ---------- */
.contact-list {
  list-style: none;
  border-top: 1px solid var(--color-divider);
  margin-bottom: var(--space-10);
}
.contact-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--color-divider);
}
.contact-k {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.contact-v { color: var(--color-ink); font-size: var(--text-base); }
a.contact-v:hover { color: var(--color-primary); }
@media (min-width: 640px) {
  .contact-list li { grid-template-columns: 180px 1fr; gap: var(--space-6); align-items: baseline; }
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-16);
  background: var(--color-surface);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: start;
}
.footer-brand p { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-2); }
.footer-nav { display: flex; flex-wrap: wrap; gap: var(--space-5); font-size: var(--text-sm); }
.footer-nav a { color: var(--color-text-muted); }
.footer-nav a:hover { color: var(--color-primary); }
.footer-legal { color: var(--color-text-faint); font-size: var(--text-xs); }
@media (min-width: 800px) {
  .footer-inner { grid-template-columns: 2fr 2fr 1fr; align-items: center; }
  .footer-legal { text-align: right; }
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 700ms cubic-bezier(0.16, 1, 0.3, 1), transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- About with portrait ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-16));
  align-items: start;
}
@media (min-width: 900px) {
  .about-grid { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); }
}

.about-portrait {
  position: sticky;
  top: 110px;
}
.about-portrait figure {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.about-portrait img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center 15%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-divider);
  box-shadow: var(--shadow-md);
  background: var(--color-surface-2);
}
.about-portrait figcaption {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.55;
  letter-spacing: 0.02em;
  padding-inline: var(--space-2);
}
.about-portrait figcaption strong { color: var(--color-ink); font-weight: 600; }
@media (max-width: 900px) {
  .about-portrait { position: static; max-width: 380px; }
}

.about-body .section-title { max-width: 22ch; }
.cv-inline { margin-top: var(--space-10); }

/* ---------- Timeline ---------- */
.timeline {
  list-style: none;
  position: relative;
  padding-left: 0;
  max-width: 900px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--color-divider);
}
@media (min-width: 720px) {
  .timeline::before { left: 140px; }
}

.tl-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding: var(--space-6) 0 var(--space-6) var(--space-10);
  position: relative;
}
.tl-item::before {
  content: '';
  position: absolute;
  left: 6px;
  top: calc(var(--space-6) + 8px);
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
}
@media (min-width: 720px) {
  .tl-item {
    grid-template-columns: 140px 1fr;
    gap: var(--space-10);
    padding-left: 0;
    align-items: baseline;
  }
  .tl-item::before { left: 134px; }
}

.tl-year {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--color-primary);
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.tl-year span {
  display: inline;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  letter-spacing: 0;
}
.tl-body h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.35rem;
  line-height: 1.2;
  margin-bottom: var(--space-1);
  color: var(--color-ink);
}
.tl-body p { color: var(--color-text-muted); font-size: var(--text-sm); }

/* ---------- Service grid ---------- */
.service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}
@media (min-width: 720px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .service-grid { grid-template-columns: repeat(3, 1fr); }
}
.service-col {
  padding: var(--space-8);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
}
.service-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.35rem;
  color: var(--color-ink);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}
.service-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.service-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  padding-left: var(--space-5);
  position: relative;
}
.service-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.55em;
  width: 6px; height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.7;
}

.section-contact .col-right { display: flex; flex-direction: column; }
.contact-cta { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* ---------- Teaching ---------- */
.teaching-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(var(--space-10), 5vw, var(--space-16));
  align-items: start;
}
@media (min-width: 1000px) {
  .teaching-grid { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
}

.subsection-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.4rem;
  color: var(--color-ink);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}
.teaching-note {
  color: var(--color-text-faint);
  font-size: var(--text-sm);
  font-style: italic;
  margin-bottom: var(--space-8);
  max-width: 60ch;
}

/* Course list — replace old two-col with clean stacked cards */
.course-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}
.course-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding: var(--space-6);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-interactive), transform var(--transition-interactive);
}
.course-list li:hover { border-color: var(--color-primary); transform: translateX(3px); }
@media (min-width: 640px) {
  .course-list li { grid-template-columns: 96px 1fr; gap: var(--space-6); align-items: baseline; }
}
.course-code {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  line-height: 1.2;
}
.course-body h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.2rem;
  color: var(--color-ink);
  margin-bottom: var(--space-1);
  line-height: 1.25;
}
.course-body p { color: var(--color-text-muted); font-size: var(--text-sm); line-height: 1.55; }

/* Aside cards */
.teaching-aside {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  position: sticky;
  top: 110px;
}
@media (max-width: 1000px) {
  .teaching-aside { position: static; }
}
.teaching-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.philo-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.philo-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  padding-left: var(--space-5);
  position: relative;
}
.philo-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.55em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.7;
}
.philo-list strong { color: var(--color-ink); font-weight: 600; }

.tool-chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.tool-chips li {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-full);
}

.course-years {
  display: inline-block;
  margin-top: var(--space-2);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 500;
}
.course-body p .course-years { display: block; margin-top: var(--space-2); }

/* =========================================================
   FEATURED AWARD (Julidan)
   ========================================================= */
.award-feature {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--space-10);
  align-items: center;
  margin: 0 0 var(--space-16);
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  box-shadow: 0 1px 0 rgba(0,0,0,0.02);
}
.award-feature-media {
  overflow: hidden;
  border-radius: 2px;
  background: var(--color-surface-alt);
}
.award-feature-media img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
}
.award-feature-body { margin: 0; }
.award-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 600;
  margin: 0 0 var(--space-3);
}
.award-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 2.6vw, 2.4rem);
  line-height: 1.15;
  color: var(--color-text);
  margin: 0 0 var(--space-4);
  letter-spacing: -0.01em;
}
.award-lede {
  color: var(--color-text-soft);
  line-height: 1.65;
  margin: 0 0 var(--space-4);
}
.award-lede em {
  font-style: italic;
  color: var(--color-text);
}
.award-meta {
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  color: var(--color-text-faint);
  margin: 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

@media (max-width: 800px) {
  .award-feature {
    grid-template-columns: 1fr;
    gap: var(--space-6);
    padding: var(--space-5);
  }
}

/* =========================================================
   MEMBERSHIPS
   ========================================================= */
.memberships {
  margin: var(--space-16) 0 0;
  padding-top: var(--space-10);
  border-top: 1px solid var(--color-border);
}
.memberships-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--color-text);
  margin: 0 0 var(--space-5);
  letter-spacing: -0.01em;
}
.memberships-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-3) var(--space-6);
}
.memberships-list li {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  color: var(--color-text-soft);
  font-size: 0.94rem;
  border-bottom: 1px dashed var(--color-border);
}
.m-year {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-primary);
  font-size: 1rem;
  letter-spacing: 0.02em;
}

/* =========================================================
   PROFESSIONAL DEVELOPMENT BLOCK
   ========================================================= */
.pd-block {
  margin: var(--space-16) 0 0;
  padding-top: var(--space-10);
  border-top: 1px solid var(--color-border);
}
.pd-header {
  max-width: 640px;
  margin: 0 0 var(--space-8);
}
.pd-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--color-text);
  margin: 0 0 var(--space-3);
  letter-spacing: -0.01em;
}
.pd-lede {
  color: var(--color-text-soft);
  line-height: 1.65;
  margin: 0;
  font-size: 0.98rem;
}
.pd-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}
.pd-card {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 3px;
}
.pd-eyebrow {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 600;
  margin: 0 0 var(--space-3);
}
.pd-card-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1.3;
  color: var(--color-text);
  margin: 0 0 var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.pd-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.pd-list li {
  padding: var(--space-2) 0;
  color: var(--color-text-soft);
  font-size: 0.94rem;
  line-height: 1.5;
  border-bottom: 1px dashed var(--color-border);
}
.pd-list li:last-child { border-bottom: none; }
.pd-list-compact li { font-size: 0.88rem; }