/* ============================================================
   STYLE — palette "sciences de la mer".
   Les couleurs principales sont définies une fois en haut :
   change-les ici pour changer tout le site d'un coup.
   ============================================================ */

:root {
  --deep: #0b3d5c;
  --deep-2: #0e5378;
  --sea: #1478a3;
  --teal: #2ec4b6;
  --teal-dark: #1a9d90;
  --foam: #f2f9fb;
  --foam-2: #e4f3f7;
  --pastel-blue: #9ed7e0;
  --ink: #12293a;
  --ink-soft: #45606f;
  --white: #ffffff;
  --border: #d7e9ee;

  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Fraunces", Georgia, serif;

  --radius: 14px;
  --shadow: 0 10px 30px -12px rgba(11, 61, 92, 0.25);
  --container: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

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

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--deep);
  color: #fff;
  padding: 10px 16px;
  z-index: 999;
}
.skip-link:focus { left: 12px; top: 12px; }

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--deep);
  line-height: 1.15;
  margin: 0 0 12px;
}

h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }

.eyebrow {
  display: block;
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--teal-dark);
  margin-bottom: 6px;
}

.section-lead {
  max-width: 65ch;
  color: var(--ink-soft);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.sub-heading {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  color: var(--deep);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 36px 0 16px;
}

/* ---------- Navigation ---------- */
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}

.nav-brand {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--deep);
  text-decoration: none;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}
.nav-links a:hover { color: var(--sea); }

.nav-cta {
  background: var(--deep);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 100px;
}
.nav-cta:hover { background: var(--sea); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 24px;
  background: var(--deep);
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: linear-gradient(160deg, var(--deep) 0%, var(--deep-2) 45%, var(--sea) 100%);
  color: #fff;
  padding: 72px 0 120px;
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-photo {
  width: 148px;
  height: 148px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid rgba(255,255,255,0.85);
  box-shadow: var(--shadow);
  margin-bottom: 22px;
}

.hero-badge {
  display: inline-block;
  background: rgba(46, 196, 182, 0.18);
  border: 1px solid rgba(46, 196, 182, 0.55);
  color: #bdf2ec;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 18px;
}

.hero-inner h1 {
  color: #fff;
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  margin-bottom: 8px;
}

.hero-role {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: #cfe9f2;
  margin: 0 0 6px;
}

.hero-tagline {
  color: #a9cbdb;
  max-width: 46ch;
  margin: 0 auto 30px;
  font-size: 0.98rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 100px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform .15s ease, background .2s ease, box-shadow .2s ease;
  border: 1px solid transparent;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--teal);
  color: var(--deep);
}
.btn-primary:hover { background: #47d6c9; }

.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.55);
}
.btn-ghost:hover { background: rgba(255,255,255,0.12); }

.btn-lg { padding: 15px 34px; font-size: 1.02rem; }

.btn-ghost-light {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}
.btn-ghost-light:hover { background: rgba(255,255,255,0.2); }

.wave-divider {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  width: 100%;
  height: 90px;
}
.wave-divider path { fill: var(--white); }
.wave-divider-top { position: absolute; top: -1px; bottom: auto; }
.wave-divider-top path { fill: var(--white); }

.hero-waves { position: absolute; inset: 0; z-index: 1; overflow: hidden; }
.bubble {
  position: absolute;
  bottom: -60px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  animation: rise 14s infinite ease-in;
}
.b1 { width: 60px; height: 60px; left: 10%; animation-delay: 0s; }
.b2 { width: 30px; height: 30px; left: 25%; animation-delay: 3s; }
.b3 { width: 90px; height: 90px; left: 55%; animation-delay: 6s; }
.b4 { width: 40px; height: 40px; left: 75%; animation-delay: 2s; }
.b5 { width: 22px; height: 22px; left: 88%; animation-delay: 8s; }

@keyframes rise {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  100% { transform: translateY(-480px); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .bubble { animation: none; display: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Sections generic ---------- */
.section { padding: 64px 0; }
.section-tint { background: var(--foam); }

.intro-section { padding: 64px 0 20px; }
.intro-text {
  position: relative;
  max-width: 66ch;
  margin: 0 0 0 44px;
  padding-left: 20px;
  border-left: 3px solid var(--pastel-blue);
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  line-height: 1.55;
  color: var(--deep);
}
.intro-text::before {
  content: "\201C";
  position: absolute;
  top: -0.5em;
  left: -0.62em;
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 600;
  font-size: 3.4rem;
  color: var(--pastel-blue);
  line-height: 1;
  pointer-events: none;
}
.lang-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin: 22px 0 0 44px;
}
.lang-pill {
  font-size: 0.85rem;
  color: var(--deep);
  background: var(--foam-2);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 100px;
}
.lang-verify {
  color: var(--teal-dark);
  text-decoration: underline;
  text-decoration-color: var(--border);
}
.lang-verify:hover { text-decoration-color: currentColor; }

/* ---------- Stat card ---------- */
.stat-card {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 26px;
  margin-bottom: 8px;
  box-shadow: var(--shadow);
}
.stat-value {
  font-family: var(--font-display);
  font-size: 2.1rem;
  color: var(--teal-dark);
  font-weight: 600;
}
.stat-label { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- Certifications ---------- */
.cert-group { margin-bottom: 26px; }
.cert-group-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.cert-group-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
  border-radius: 6px;
}
.cert-group-title {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--sea);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}
.cert-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.cert-card .cert-name { font-weight: 600; color: var(--deep); display: block; }
.cert-card .cert-status {
  display: inline-block;
  margin-top: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #b06a1e;
  background: #fdf1e2;
  border: 1px solid #f2ddb8;
  padding: 2px 9px;
  border-radius: 100px;
}

/* ---------- Gallery ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--border);
}
.gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform .3s ease;
}
.gallery-item:hover img { transform: scale(1.06); }

.gallery-empty {
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  color: var(--ink-soft);
  background: var(--white);
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  padding-left: 28px;
  border-left: 2px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.timeline-item { position: relative; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--teal);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--teal);
}
.timeline-period {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--teal-dark);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.timeline-item h3 { font-size: 1.15rem; margin-bottom: 2px; }
.timeline-place {
  color: var(--sea);
  font-style: italic;
  font-weight: 500;
  font-size: 0.92rem;
  margin-bottom: 8px;
}
.timeline-item ul { margin: 0; padding-left: 20px; color: var(--ink-soft); font-size: 0.95rem; }

/* Plusieurs entrées groupées sous une même date (voir "items" dans data.js) */
.timeline-subitem + .timeline-subitem {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
}
.timeline-item li { margin-bottom: 4px; }

/* Mise en forme disponible dans les textes de data.js :
   **gras**, *italique*, [texte](https://...) */
.section-lead strong, .intro-text strong, .timeline-item strong,
.work-card p strong, .skill-block li strong, .contact-lead strong {
  color: var(--deep);
  font-weight: 700;
}
.section-lead a, .intro-text a, .timeline-item a,
.work-card p a, .skill-block li a, .contact-lead a {
  color: var(--teal-dark);
  text-decoration: underline;
  text-decoration-color: var(--border);
  text-underline-offset: 2px;
}
.section-lead a:hover, .intro-text a:hover, .timeline-item a:hover,
.work-card p a:hover, .skill-block li a:hover, .contact-lead a:hover {
  text-decoration-color: currentColor;
}

/* ---------- Card grid (travaux) ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.work-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.work-card .period { font-size: 0.8rem; color: var(--teal-dark); font-weight: 700; }
.work-card h3 { font-size: 1.1rem; margin: 6px 0 8px; }
.work-card p { color: var(--ink-soft); font-size: 0.95rem; margin: 0 0 14px; }
.tag-row { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  background: var(--foam-2);
  color: var(--deep);
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid var(--border);
}

.work-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.work-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--teal-dark);
  text-decoration: none;
  padding: 5px 12px;
  border-radius: 100px;
  border: 1px solid var(--teal);
  transition: background .15s ease, color .15s ease;
}
.work-link::after { content: "→"; }
.work-link:hover { background: var(--teal); color: var(--deep); }

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.skill-block h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--sea);
  margin-bottom: 10px;
}
.skill-block ul { margin: 0; padding-left: 18px; color: var(--ink-soft); font-size: 0.93rem; }
.skill-block li { margin-bottom: 5px; }

/* ---------- Contact ---------- */
.contact-section {
  position: relative;
  background: linear-gradient(160deg, var(--sea) 0%, var(--deep) 100%);
  color: #fff;
  padding: 110px 0 80px;
  text-align: center;
}
.contact-title { color: #fff; }
.contact-lead { color: #cfe9f2; max-width: 55ch; margin: 0 auto 30px; }
.contact-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.footer { padding: 28px 0; background: var(--deep); color: #a9cbdb; }
.footer-inner { text-align: center; font-size: 0.85rem; }

/* ---------- Carrousel / zoom photo ---------- */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(6, 24, 36, 0.94);
  z-index: 999;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 24px;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: min(88vw, 900px); max-height: 72vh; border-radius: 8px; }

.lightbox-close {
  position: absolute;
  top: 20px; right: 26px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.35);
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .15s ease;
}
.lightbox-nav:hover { background: rgba(255,255,255,0.2); }
.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

.lightbox-info {
  max-width: min(88vw, 900px);
  text-align: center;
  margin-top: 16px;
}
.lightbox-caption { color: #fff; font-size: 1rem; font-weight: 600; margin: 0 0 4px; }
.lightbox-lieu { color: #9fc9db; font-style: italic; font-size: 0.9rem; margin: 0; }
.lightbox-counter { display: block; color: #6f95a8; font-size: 0.78rem; margin-top: 10px; }

@media (max-width: 640px) {
  .lightbox-nav { width: 40px; height: 40px; font-size: 1.5rem; }
  .lightbox-prev { left: 6px; }
  .lightbox-next { right: 6px; }
}

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 18px;
    border-bottom: 1px solid var(--border);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 12px 0; }
  .nav-links a.nav-cta {
    display: inline-block;
    padding: 8px 18px;
    margin-top: 6px;
  }

  .section { padding: 48px 0; }
  .hero { padding: 48px 0 100px; }
  .contact-section { padding: 96px 0 56px; }

  .intro-text, .lang-row { margin-left: 22px; }
  .intro-text::before { font-size: 2.6rem; left: -0.5em; }
}