:root {
  /* 60-30-10 Rule Palette */
  --bg-body: #fdfcfb;       /* Warm paper white */
  --surface: #ffffff;       /* Pure white */
  --primary: #2d4f3e;       /* Deep Forest Green - Trust/Academic */
  --primary-light: #e8ede9; /* Soft green wash */
  --accent: #c07b66;        /* Muted Terra Cotta - Complementary/Action */
  --accent-hover: #a86552;
  --text-main: #1a201d;     /* Soft Black */
  --text-muted: #5e6662;    /* Grey */
  --border: #e6eae8;

  --shadow-sm: 0 4px 6px -1px rgba(45, 79, 62, 0.05);
  --shadow-card: 0 10px 30px -5px rgba(45, 79, 62, 0.06);

  --radius: 6px;
  --font-heading: 'Lora', Georgia, serif;
  --font-body: 'Proxima Nova', 'Inter', sans-serif;
  --max-width: 1080px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}

img { max-width: 100%; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--primary);
  margin: 0 0 0.5em;
  font-weight: 600;
  line-height: 1.2;
}

h1 { font-size: clamp(2rem, 4.5vw, 2.6rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 3vw, 1.85rem); }
h3 { font-size: 1.25rem; color: var(--text-main); }

p { margin-bottom: 1.25rem; color: var(--text-muted); }
p.lede { font-size: 1.1rem; line-height: 1.55; color: var(--text-main); font-weight: 400; max-width: 65ch; }

/* Layout */
.shell { width: min(var(--max-width), 92%); margin: 0 auto; }
.section { padding: clamp(3rem, 6vw, 4.5rem) 0; scroll-margin-top: 5.5rem; }
.section.muted { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section > .shell > h2 { margin-bottom: 0.5rem; }
.section-intro { max-width: 65ch; }

/* Header & Nav */
.site-header {
  padding: 1.25rem 0;
  background: rgba(253, 252, 251, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

.nav-container.site-nav { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.75rem 1.5rem; }
.brand.nav-name { display: flex; align-items: center; }
.brand img { height: 44px; display: block; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--primary);
  font-size: 1.2rem;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
}

.nav-links { list-style: none; display: flex; gap: 2rem; margin: 0; padding: 0; }
.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}
.nav-links a.active, .nav-links a:hover { color: var(--primary); }
.nav-links a.active::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 100%; height: 1px; background: var(--accent);
}

.pill {
  display: inline-block;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--accent);
  background: rgba(192, 123, 102, 0.1);
  padding: 0.4em 0.8em;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}

/* Buttons */
.btn {
  display: inline-flex; justify-content: center; align-items: center;
  padding: 0.8em 1.6em;
  background: var(--primary);
  color: white;
  font-weight: 600;
  border-radius: var(--radius);
  transition: all 0.2s ease;
  font-size: 1rem;
  border: 1px solid var(--primary);
  cursor: pointer;
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: white; transform: translateY(-1px); }

.btn.secondary {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--border);
}
.btn.secondary:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

/* Cards & Grids */
.grid { display: grid; gap: 2rem; }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); }

.card {
  background: var(--surface);
  padding: 1.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: border-color 0.2s ease;
}
.card:hover { border-color: var(--primary); }

/* Lists */
.list-clean { list-style: none; padding: 0; margin: 0; }
.list-clean li {
  margin-bottom: 0.6rem;
  padding-left: 1rem;
  position: relative;
  color: var(--text-muted);
  border-left: 2px solid var(--border);
}

/* --- Profile / hero (rendered by js/profile.js) -------------------------- */
.profile { display: grid; grid-template-columns: 1.2fr 0.8fr; align-items: center; gap: 3rem; }
.profile-photo {
  width: 100%;
  max-width: 220px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  border: 3px solid var(--surface);
  box-shadow: var(--shadow-sm);
  object-fit: cover;
  object-position: center top;
  justify-self: center;
}
.profile-body { order: -1; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.5rem; }

/* --- About (rendered by js/profile.js) ------------------------------------ */
.about-content { max-width: 700px; margin-left: auto; margin-right: auto; }

/* --- Generic items (education, media, talks, teaching) ------------------- */
.item { border-left: 2px solid var(--border); padding-left: 1.25rem; }
.item-title { margin: 0; font-family: var(--font-heading); font-weight: 600; color: var(--text-main); font-size: 1.05rem; }
.item-meta { margin: 0.2rem 0 0; color: var(--accent); font-weight: 600; font-size: 0.88rem; }
.item-description { margin: 0.4rem 0 0; }
.item-list { display: grid; gap: 1.5rem; }

/* --- Papers (publications + working papers) ------------------------------ */
.paper { border-left: 2px solid var(--border); padding-left: 1.25rem; transition: border-color 0.2s; }
.paper:hover { border-left-color: var(--accent); }
.paper-title { font-weight: 600; margin: 0 0 0.2rem; color: var(--text-main); }
.paper-title a { text-decoration: underline; text-decoration-color: var(--border); }
.paper-authors { margin: 0 0 0.15rem; color: var(--text-muted); font-size: 0.95rem; }
.paper-venue { margin: 0; color: var(--text-muted); font-size: 0.95rem; }
.paper-links { margin: 0.5rem 0 0; display: flex; gap: 1rem; }
.paper-links a { color: var(--primary); text-decoration: underline; font-size: 0.9rem; }
.paper-list { display: grid; gap: 1.25rem; }

/* Forms */
input, textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-body);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s;
}
input:focus, textarea:focus { outline: none; border-color: var(--primary); background: #fff; }
label { display: block; margin-bottom: 0.5rem; font-weight: 600; font-size: 0.9rem; color: var(--primary); }
.field { margin-bottom: 1rem; }
.field:last-of-type { margin-bottom: 1.25rem; }
.btn.btn-block { width: 100%; }

/* CV embed */
.cv-intro { text-align: center; }
.cv-container {
  width: 100%;
  min-height: 70vh;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}
.cv-container iframe { width: 100%; height: 100%; min-height: 70vh; border: none; }

/* Footer */
.site-footer { background: var(--primary); color: rgba(255,255,255,0.8); padding: 2.5rem 0; font-size: 0.9rem; }
.site-footer a { color: #fff; text-decoration: underline; text-decoration-color: rgba(255,255,255,0.3); }
.site-footer a:hover { text-decoration-color: #fff; color: #fff; }
.footer-row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }

/* --- Cookie notice --------------------------------------------------------- */
.cookie-notice {
  position: fixed;
  left: 1rem;
  bottom: 1rem;
  z-index: 200;
  max-width: 340px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  background: var(--text-main);
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius);
  font-size: 0.8rem;
  line-height: 1.4;
  box-shadow: var(--shadow-sm);
}
.cookie-notice[hidden] { display: none; }
.cookie-notice p { margin: 0; color: inherit; }
.cookie-notice button {
  flex-shrink: 0;
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius);
  padding: 0.35em 0.8em;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
}
.cookie-notice button:hover { border-color: #fff; }

/* --- Contact section ------------------------------------------------------ */
.contact-grid { align-items: start; }
.contact-channels { margin-top: 1.5rem; background: var(--primary-light); border: none; }
.contact-channels a { font-weight: 600; color: var(--primary); }

@media (max-width: 768px) {
  .hero-grid, .profile { grid-template-columns: 1fr; }
  .profile-body { order: 0; }
  .profile-photo { max-width: 140px; }
  .grid.two { grid-template-columns: 1fr; }

  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    gap: 1rem;
    padding-top: 0.75rem;
  }
  .nav-container.site-nav.nav-open .nav-links { display: flex; }

  .cookie-notice { left: 1rem; right: 1rem; max-width: none; }
}