:root {
  --bg: #07090d;
  --bg-soft: #0c1017;
  --bg-card: #111722;
  --border: #1e2937;
  --text: #e6edf3;
  --text-dim: #8b98a9;
  --accent: #38bdf8;
  --accent-2: #818cf8;
  --green: #34d399;
  --blue: #60a5fa;
  --red: #f87171;
  --amber: #fbbf24;
  --radius: 14px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --mono: 'Cascadia Code', 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(56,189,248,0.08), transparent),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(129,140,248,0.06), transparent);
  background-attachment: fixed;
}

a { color: var(--accent); text-decoration: none; }

/* ===== NAVIGATION ===== */
.main-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(7,9,13,0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
}
.logo {
  font-size: 1.25rem; font-weight: 800; color: var(--text);
  letter-spacing: -0.02em;
}
.logo-shark { color: var(--accent); margin-right: 4px; }
.logo-dof { color: var(--accent-2); }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  color: var(--text-dim); padding: 8px 14px; border-radius: 8px;
  font-size: 0.92rem; transition: all .2s;
}
.nav-links a:hover { color: var(--text); background: var(--bg-card); }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.4rem; cursor: pointer; }

/* ===== HERO ===== */
.hero {
  position: relative;
  padding: 110px 24px 90px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(56,189,248,0.10), transparent 40%),
    radial-gradient(circle at 80% 40%, rgba(129,140,248,0.12), transparent 45%);
  pointer-events: none;
}
.hero-content { position: relative; max-width: 820px; margin: 0 auto; }
.hero-eyebrow {
  color: var(--accent); text-transform: uppercase; letter-spacing: 0.18em;
  font-size: 0.78rem; font-weight: 600;
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800; line-height: 1.06;
  margin: 18px 0;
  letter-spacing: -0.03em;
}
.grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  color: var(--text-dim); font-size: 1.1rem; max-width: 620px;
  margin: 0 auto 32px; line-height: 1.6;
}
.hero-sub strong { color: var(--text); }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 10px;
  font-weight: 600; font-size: 0.95rem;
  transition: all .2s; cursor: pointer; border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04121d;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(56,189,248,0.25); }
.btn-ghost {
  background: transparent; color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--bg-card); }
.btn-video {
  background: rgba(248,113,113,0.12); color: #fca5a5;
  border-color: rgba(248,113,113,0.3);
}
.btn-video:hover { background: rgba(248,113,113,0.2); transform: translateY(-2px); }

/* ===== STATS ===== */
.stats-bar {
  display: grid; grid-template-columns: repeat(4, 1fr);
  max-width: 900px; margin: 0 auto 60px; padding: 0 24px;
  gap: 16px;
}
.stat {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
  text-align: center;
}
.stat strong {
  display: block; font-size: 1.8rem; font-weight: 800;
  color: var(--accent);
}
.stat span { color: var(--text-dim); font-size: 0.85rem; }

/* ===== SECTIONS ===== */
.sec { max-width: 1200px; margin: 0 auto 70px; padding: 0 24px; }
.sec-head { margin-bottom: 28px; }
.sec-head h2 { font-size: 1.6rem; margin-bottom: 6px; }
.sec-head p { color: var(--text-dim); }

.niv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.niv-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px;
  transition: all .25s; position: relative; overflow: hidden;
}
.niv-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.niv-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.niv-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
.niv-card p { color: var(--text-dim); font-size: 0.9rem; line-height: 1.5; margin-bottom: 14px; }
.niv-count { color: var(--accent); font-size: 0.85rem; font-weight: 600; }
.niv-decouverte::before { background: var(--green); }
.niv-decouverte .niv-count { color: var(--green); }
.niv-progresser::before { background: var(--blue); }
.niv-progresser .niv-count { color: var(--blue); }
.niv-maitriser::before { background: var(--red); }
.niv-maitriser .niv-count { color: var(--red); }

/* ===== GRIDS ===== */
.spot-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.spot-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: all .25s;
}
.spot-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.spot-img { height: 150px; background-size: cover; background-position: center; }
.spot-body { padding: 14px; }
.spot-name { display: block; font-weight: 600; font-size: 0.95rem; }
.spot-maker { display: block; color: var(--text-dim); font-size: 0.8rem; margin-top: 3px; }

.ac-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.ac-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: all .25s;
}
.ac-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.ac-img { height: 140px; background-size: cover; background-position: center; }
.ac-body { padding: 14px; }
.ac-badge {
  display: inline-block; font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  padding: 3px 9px; border-radius: 20px; margin-bottom: 8px;
}
.badge-decouverte { background: rgba(52,211,153,0.15); color: var(--green); }
.badge-progresser { background: rgba(96,165,250,0.15); color: var(--blue); }
.badge-maitriser { background: rgba(248,113,113,0.15); color: var(--red); }
.ac-name { display: block; font-weight: 600; font-size: 0.95rem; }
.ac-maker { display: block; color: var(--text-dim); font-size: 0.78rem; margin: 3px 0 10px; }
.ac-links { }
.ac-link { font-size: 0.85rem; font-weight: 600; color: var(--accent); }
.ac-link:hover { text-decoration: underline; }

.biblio-group { margin-bottom: 50px; }
.grp-head {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 12px; margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.grp-head h3 { font-size: 1.3rem; }
.grp-count { color: var(--text-dim); font-size: 0.85rem; }

/* ===== PAGE HEADER ===== */
.page-head {
  padding: 60px 0 30px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(56,189,248,0.04), transparent);
  margin-bottom: 40px;
}
.page-head h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 10px 0 8px; }
.page-head p { color: var(--text-dim); }
.crumbs { font-size: 0.82rem; color: var(--text-dim); }
.crumbs a { color: var(--text-dim); }
.crumbs a:hover { color: var(--accent); }
.crumbs .sep { margin: 0 6px; opacity: 0.5; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 900px; margin: 0 auto; padding: 0 24px; }

/* ===== SEARCH & FILTERS ===== */
.search-bar { margin: 22px 0 0; }
.search-bar input {
  width: 100%; max-width: 480px;
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text); border-radius: 10px;
  padding: 13px 18px; font-size: 1rem;
  transition: border-color .2s;
}
.search-bar input:focus { outline: none; border-color: var(--accent); }
.filter-bar { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }
.chip {
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-dim); border-radius: 20px;
  padding: 8px 16px; font-size: 0.85rem; cursor: pointer;
  transition: all .2s;
}
.chip:hover { color: var(--text); border-color: var(--accent); }
.chip[data-active] { background: var(--accent); color: #04121d; border-color: var(--accent); font-weight: 600; }

/* ===== PARCOURS ===== */
.path-intro {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 26px; margin-bottom: 40px;
  color: var(--text-dim); line-height: 1.6;
}
.path-step {
  display: grid; grid-template-columns: 70px 1fr; gap: 22px;
  padding: 30px 0; position: relative;
}
.path-step:not(:last-child)::after {
  content: ''; position: absolute; left: 35px; top: 90px; bottom: -10px;
  width: 2px; background: linear-gradient(180deg, var(--border), transparent);
}
.path-num {
  width: 70px; height: 70px; border-radius: 50%;
  background: var(--bg-card); border: 2px solid var(--accent);
  color: var(--accent); font-size: 1.6rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.path-content h2 { font-size: 1.4rem; margin-bottom: 10px; }
.path-content p { color: var(--text-dim); line-height: 1.6; margin-bottom: 18px; }
.path-links {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.path-links a {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 12px;
  font-size: 0.83rem; color: var(--text);
  transition: all .2s;
}
.path-links a:hover { border-color: var(--accent); color: var(--accent); }
.li-maker { color: var(--text-dim); font-size: 0.75rem; }
.li-more { color: var(--accent) !important; border-color: var(--accent) !important; font-weight: 600; }

/* ===== CONSTRUCTEURS ===== */
.maker-block { margin-bottom: 34px; }
.maker-letter {
  font-size: 1.5rem; color: var(--accent); margin-bottom: 10px;
  border-bottom: 1px solid var(--border); padding-bottom: 8px;
}
.maker-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 11px 16px; border-radius: 8px;
  color: var(--text); transition: background .15s;
}
.maker-row:hover { background: var(--bg-card); }
.mk { font-weight: 500; }
.mkc {
  background: var(--bg-card); border-radius: 20px;
  padding: 2px 10px; font-size: 0.75rem; color: var(--accent);
}

/* ===== OUTILS ===== */
.tool-list { display: flex; flex-direction: column; gap: 10px; }
.tool-row {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-card); border: 1px solid var(--border);
  padding: 16px 20px; border-radius: 10px;
  transition: all .2s;
}
.tool-row:hover { border-color: var(--accent); transform: translateX(4px); }
.tt { font-weight: 600; color: var(--text); min-width: 150px; }
.td { color: var(--text-dim); flex: 1; font-size: 0.88rem; }
.tgo { color: var(--accent); }

/* ===== FICHE AVION ===== */
.detail {
  display: grid; grid-template-columns: 380px 1fr; gap: 34px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 30px; margin-bottom: 30px;
}
.detail-img {
  height: 260px; border-radius: 10px;
  background-size: cover; background-position: center;
  border: 1px solid var(--border);
}
.detail-body h1 { font-size: 2rem; margin: 10px 0 4px; }
.detail-maker { color: var(--text-dim); font-size: 1.05rem; margin-bottom: 14px; }
.detail-sim { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 8px; }
.detail-cat {
  display: inline-block; background: rgba(56,189,248,0.1);
  color: var(--accent); border-radius: 20px;
  padding: 4px 14px; font-size: 0.82rem; margin-bottom: 20px;
}
.detail-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ===== PLACEHOLDER / CTA ===== */
.placeholder {
  background: var(--bg-card); border: 1px dashed var(--border);
  border-radius: var(--radius); padding: 60px; text-align: center;
}
.placeholder h3 { margin-bottom: 10px; }
.placeholder p { color: var(--text-dim); }
.sec-cta { margin-top: 40px; }
.cta-box {
  background: linear-gradient(135deg, rgba(56,189,248,0.08), rgba(129,140,248,0.08));
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 50px;
  text-align: center;
}
.cta-box h2 { font-size: 1.6rem; margin-bottom: 12px; }
.cta-box p { color: var(--text-dim); margin-bottom: 26px; }
.cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ===== FOOTER ===== */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 70px; background: var(--bg-soft);
}
.foot-inner {
  max-width: 1200px; margin: 0 auto; padding: 40px 24px;
  display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap;
}
.foot-brand strong { font-size: 1.05rem; }
.foot-brand p { color: var(--text-dim); font-size: 0.85rem; max-width: 380px; line-height: 1.5; margin-top: 8px; }
.foot-links { display: flex; gap: 18px; }
.foot-links a { color: var(--text-dim); }
.foot-links a:hover { color: var(--accent); }
.foot-bottom {
  border-top: 1px solid var(--border);
  padding: 16px 24px; text-align: center;
  color: var(--text-dim); font-size: 0.8rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .niv-grid { grid-template-columns: 1fr; }
  .spot-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .detail { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    flex-direction: column; padding: 10px;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .hero { padding: 70px 20px 50px; }
  .spot-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: 1fr; }
}