@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif&family=Inter:wght@400;500&display=swap');

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

:root {
  --bg: hsl(0 0% 98%);
  --fg: hsl(240 10% 4%);
  --card: hsl(0 0% 100%);
  --muted: hsl(240 5% 46%);
  --accent: hsl(220 90% 50%);
  --border: rgba(0,0,0,0.1);
  --secondary: hsl(0 0% 94%);
  --popover: hsl(0 0% 100%);
  --font-serif: 'Open Sans', open-sans;
  --font-sans: 'Inter', sans-serif;
}

.dark {
  --bg: hsl(240 10% 4%);
  --fg: hsl(0 0% 93%);
  --card: hsl(240 10% 7%);
  --muted: hsl(240 5% 65%);
  --accent: hsl(217 90% 65%);
  --border: rgba(255,255,255,0.1);
  --secondary: hsl(240 5% 15%);
  --popover: hsl(240 10% 7%);
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-serif); font-weight: 400; text-wrap: balance; }

a { color: inherit; text-decoration: none; }

/* NAV */
nav {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  backdrop-filter: blur(8px);
}
.nav-inner {
  max-width: 800px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.5rem;
}
.nav-links { display: flex; flex-wrap: wrap; gap: 1.5rem; list-style: none; justify-content: center; }
.nav-links a {
  font-size: 0.95rem; font-weight: 500;
  opacity: 0.6; transition: opacity 0.2s, color 0.2s; cursor: pointer;
}
.nav-links a:hover, .nav-links a.active { opacity: 1; color: var(--accent); }

.controls { display: flex; gap: 0.5rem; align-items: center; }
.ctrl-btn {
  background: none; border: 1px solid var(--border); border-radius: 9999px;
  padding: 0.5rem; cursor: pointer; color: var(--fg); display: flex; align-items: center; justify-content: center;
  transition: background 0.2s;
}
.ctrl-btn:hover { background: var(--secondary); }

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu {
  display: none; position: absolute; right: 0; top: 100%; padding-top: 0.5rem; z-index: 100;
}
.dropdown:hover .dropdown-menu { display: block; }
.dropdown-panel {
  background: var(--popover); border: 1px solid var(--border);
  border-radius: 0.375rem; padding: 0.25rem; box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  min-width: 10px;
}
.dropdown-item {
  display: flex; align-items: center; gap: 0.5rem; width: 100%;
  padding: 0.375rem 0.75rem; border: none; background: none;
  font-size: 0.875rem; cursor: pointer; border-radius: 0.25rem;
  color: var(--fg); transition: background 0.2s; text-align: left;
}
.dropdown-item:hover { background: var(--secondary); }
.dropdown-item.active { color: var(--accent); font-weight: 500; }

/* FLAG SVGs */
.flag { height: 16px; width: 24px; border-radius: 2px; overflow: hidden; flex-shrink: 0; }

/* MAIN */
main {
  max-width: 800px; margin: 0 auto; padding: 4rem 1.5rem;
}

section { animation: fadeIn 0.4s ease forwards; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ACCUEIL */
.accueil-grid {
  display: flex; flex-direction: row; align-items: center; gap: 2rem;
}
.accueil-grid .text { flex: 1; }
.accueil-grid h1 { font-size: 3.5rem; line-height: 1; margin-bottom: 1.5rem; }
.accueil-grid .subtitle { font-size: 1.125rem; color: var(--muted); }
.accueil-grid .photo {
  width: 192px; height: 192px; border-radius: 0.5rem;
  border: 1px solid var(--border); object-fit: cover; flex-shrink: 0;
}

.contact-card {
  margin-top: 2.5rem; padding: 1.5rem; border-radius: 0.5rem;
  border: 1px solid var(--border); background: var(--card);
}
.contact-card h2 { font-size: 1.5rem; margin-bottom: 1rem; }
.contact-row { display: flex; align-items: center; gap: 0.75rem; color: var(--muted); margin-bottom: 0.75rem; }
.contact-row svg { width: 16px; height: 16px; color: var(--accent); flex-shrink: 0; }

/* SECTIONS */
.section-title {
  font-size: 1.875rem; border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem; margin-bottom: 1.5rem;
}
.year-group { margin-bottom: 2rem; }
.year-group h3 { font-size: 1.25rem; margin-bottom: 1rem; }

.pub-item { display: flex; align-items: flex-start; gap: 0.75rem; margin-bottom: 1rem; }
.pub-item .title { flex: 1; font-weight: 500; transition: color 0.2s; }
.pub-item .title:hover { color: var(--accent); text-decoration: underline; }
.pub-icons { display: flex; gap: 0.5rem; flex-shrink: 0; padding-top: 2px; }
.pub-icons a { opacity: 0.8; transition: opacity 0.2s; }
.pub-icons a:hover { opacity: 1; }

.label-small { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
.item-title { font-weight: 500; margin-top: 0.25rem; }
.item-desc { font-size: 0.875rem; color: var(--muted); margin-top: 0.25rem; }
.item-block { margin-bottom: 1rem; }

.doc-link { display: inline-block; margin-top: 0.25rem; font-size: 0.875rem; color: var(--accent); }
.doc-link:hover { text-decoration: underline; }

@media (max-width: 640px) {
  .accueil-grid { flex-direction: column-reverse; align-items: flex-start; }
  .accueil-grid h1 { font-size: 2.5rem; }
  .accueil-grid .photo { width: 160px; height: 160px; }
  .nav-links { gap: 1rem; }
}