/* ─── Reset & base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  background: #F7F9FC;
  color: #1F2D3D;
  min-height: 100vh;
}
img, svg { display: block; }
a { text-decoration: none; color: inherit; }

/* ─── Tokens ────────────────────────────────────────────────────────────────── */
:root {
  --blue-900: #0B1F3A;
  --blue-700: #1A3A6B;
  --blue-500: #2563EB;
  --blue-400: #3B82F6;
  --blue-100: #DBEAFE;
  --blue-50:  #EFF6FF;
  --accent:   #0EA5E9;
  --accent-dark: #0284C7;
  --gray-900: #111827;
  --gray-700: #374151;
  --gray-500: #6B7280;
  --gray-300: #D1D5DB;
  --gray-100: #F3F4F6;
  --white:    #FFFFFF;
  --success:  #10B981;
  --warning:  #F59E0B;

  --radius-sm: 6px;
  --radius:    12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.05);
  --shadow:    0 4px 16px rgba(0,0,0,.08), 0 1px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.12), 0 4px 12px rgba(0,0,0,.06);
}

/* ─── Navigation ────────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-300);
  padding: 0 2rem;
  height: 56px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-brand {
  display: flex; align-items: center; gap: .6rem;
  font-weight: 700; font-size: .95rem; color: var(--blue-700);
}
.nav-brand span.dot { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: .25rem; }
.nav-links a {
  padding: .35rem .75rem;
  border-radius: var(--radius-sm);
  font-size: .85rem; font-weight: 500; color: var(--gray-700);
  transition: background .15s, color .15s;
}
.nav-links a:hover { background: var(--blue-50); color: var(--blue-500); }
.nav-links a.active { background: var(--blue-100); color: var(--blue-500); }

/* ─── Breadcrumb ────────────────────────────────────────────────────────────── */
.breadcrumb {
  padding: .75rem 2rem;
  font-size: .8rem; color: var(--gray-500);
  display: flex; align-items: center; gap: .4rem;
  border-bottom: 1px solid var(--gray-100);
  background: var(--white);
}
.breadcrumb a { color: var(--blue-400); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { color: var(--gray-300); }

/* ─── Hero (page d'accueil) ─────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 60%, #1E3A5F 100%);
  padding: 5rem 2rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(14,165,233,.15) 0%, transparent 70%);
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(14,165,233,.15); border: 1px solid rgba(14,165,233,.3);
  color: var(--accent); font-size: .8rem; font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase;
  padding: .35rem 1rem; border-radius: 99px; margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800; line-height: 1.15;
  color: var(--white); margin-bottom: 1rem;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.hero-subtitle {
  font-size: 1.1rem; color: rgba(255,255,255,.7);
  max-width: 620px; margin: 0 auto 2.5rem; line-height: 1.6;
}
.hero-tags {
  display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem;
  max-width: 700px; margin: 0 auto;
}
.hero-tag {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15);
  color: rgba(255,255,255,.85); font-size: .78rem; font-weight: 500;
  padding: .3rem .8rem; border-radius: 99px;
}

/* ─── Section générique ─────────────────────────────────────────────────────── */
.section { padding: 3rem 2rem; max-width: 1100px; margin: 0 auto; }
.section-title {
  font-size: 1.35rem; font-weight: 700; color: var(--blue-900);
  margin-bottom: 1.5rem;
  display: flex; align-items: center; gap: .6rem;
}
.section-title::after {
  content: ''; flex: 1; height: 1px; background: var(--gray-300);
}

/* ─── Grille de cartes (accueil) ────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--white); border-radius: var(--radius);
  border: 1px solid var(--gray-300);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform .2s, box-shadow .2s, border-color .2s;
  cursor: pointer;
  display: flex; flex-direction: column; gap: .75rem;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--blue-400);
}
.card-header { display: flex; align-items: center; gap: .9rem; }
.card-logo {
  width: 44px; height: 44px; flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  background: var(--gray-100);
}
.card-logo img { width: 100%; height: 100%; object-fit: contain; }
.card-title { font-weight: 700; font-size: 1rem; color: var(--blue-900); }
.card-domain { font-size: .75rem; color: var(--gray-500); font-weight: 500; }
.card-desc { font-size: .85rem; color: var(--gray-700); line-height: 1.55; }
.card-footer { margin-top: auto; display: flex; align-items: center; justify-content: space-between; }
.badge {
  font-size: .72rem; font-weight: 600; padding: .2rem .65rem;
  border-radius: 99px; text-transform: uppercase; letter-spacing: .04em;
}
.badge-advanced  { background: #D1FAE5; color: #065F46; }
.badge-inter     { background: #DBEAFE; color: #1E40AF; }
.badge-beginner  { background: #FEF3C7; color: #92400E; }
.card-arrow { color: var(--gray-300); font-size: 1.1rem; transition: color .2s; }
.card:hover .card-arrow { color: var(--blue-400); }

/* ─── Page detail layout ────────────────────────────────────────────────────── */
.page-header {
  background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
  padding: 3rem 2rem 2.5rem;
  color: var(--white);
}
.page-header-inner { max-width: 1100px; margin: 0 auto; }
.page-header-top { display: flex; align-items: center; gap: 1.2rem; margin-bottom: .75rem; }
.page-icon {
  width: 56px; height: 56px; border-radius: var(--radius);
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; flex-shrink: 0;
}
.page-icon img { width: 80%; height: 80%; object-fit: contain; }
.page-header h1 { font-size: 1.9rem; font-weight: 800; }
.page-header p  { color: rgba(255,255,255,.72); font-size: .95rem; margin-top: .3rem; max-width: 640px; }
.level-pill {
  display: inline-flex; align-items: center; gap: .35rem;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2);
  color: var(--white); font-size: .78rem; font-weight: 600;
  padding: .28rem .8rem; border-radius: 99px; margin-top: .6rem;
}

/* ─── Contenu page ──────────────────────────────────────────────────────────── */
.content { max-width: 1100px; margin: 0 auto; padding: 2.5rem 2rem; }
.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 768px) { .content-grid { grid-template-columns: 1fr; } }

/* ─── Panels ────────────────────────────────────────────────────────────────── */
.panel {
  background: var(--white); border-radius: var(--radius);
  border: 1px solid var(--gray-300); box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.panel-header {
  padding: .85rem 1.25rem;
  border-bottom: 1px solid var(--gray-100);
  font-weight: 700; font-size: .9rem; color: var(--blue-900);
  display: flex; align-items: center; gap: .5rem;
  background: var(--gray-100);
}
.panel-body { padding: 1.25rem; }

/* ─── Tableau de données ────────────────────────────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.data-table th {
  text-align: left; padding: .6rem .75rem;
  font-weight: 600; font-size: .78rem; color: var(--gray-500);
  text-transform: uppercase; letter-spacing: .05em;
  border-bottom: 2px solid var(--gray-300);
}
.data-table td {
  padding: .65rem .75rem;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700); vertical-align: top;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--blue-50); }
.data-table td strong { color: var(--blue-900); }

/* ─── Skills checklist ──────────────────────────────────────────────────────── */
.skill-list { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.skill-list li {
  display: flex; align-items: flex-start; gap: .6rem;
  font-size: .875rem; color: var(--gray-700); line-height: 1.5;
}
.skill-list li::before {
  content: '✓';
  color: var(--success); font-weight: 700; flex-shrink: 0; margin-top: .05rem;
}

/* ─── Code block ────────────────────────────────────────────────────────────── */
.code-block {
  background: var(--gray-900); border-radius: var(--radius-sm);
  padding: 1rem 1.25rem; overflow-x: auto;
}
.code-block pre { font-family: 'Fira Code','Cascadia Code','Consolas',monospace; font-size: .82rem; color: #E2E8F0; line-height: 1.65; }
.code-label {
  display: flex; align-items: center; justify-content: space-between;
  padding: .5rem 1rem; background: #1E293B;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-size: .75rem; color: var(--gray-500); font-family: monospace;
}
.code-label + .code-block { border-radius: 0 0 var(--radius-sm) var(--radius-sm); }

/* ─── Barre de compétence ───────────────────────────────────────────────────── */
.skill-bar-wrap { display: flex; flex-direction: column; gap: .75rem; }
.skill-bar-item {}
.skill-bar-label {
  display: flex; justify-content: space-between; align-items: center;
  font-size: .84rem; font-weight: 600; color: var(--blue-900); margin-bottom: .3rem;
}
.skill-bar-label span { font-weight: 400; color: var(--gray-500); font-size: .78rem; }
.skill-bar-track { height: 8px; background: var(--gray-100); border-radius: 99px; overflow: hidden; }
.skill-bar-fill { height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--blue-500), var(--accent)); }

/* ─── Tag chips ─────────────────────────────────────────────────────────────── */
.tags { display: flex; flex-wrap: wrap; gap: .4rem; }
.tag {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .3rem .75rem; border-radius: 99px; font-size: .78rem; font-weight: 600;
  background: var(--blue-100); color: var(--blue-700);
  border: 1px solid var(--blue-200, #BFDBFE);
}
.tag img { width: 14px; height: 14px; object-fit: contain; }

/* ─── Related links ─────────────────────────────────────────────────────────── */
.related-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: .75rem;
}
.related-card {
  display: flex; align-items: center; gap: .75rem;
  padding: .75rem 1rem;
  background: var(--white); border: 1px solid var(--gray-300); border-radius: var(--radius-sm);
  font-size: .85rem; font-weight: 600; color: var(--blue-700);
  transition: background .15s, border-color .15s;
}
.related-card:hover { background: var(--blue-50); border-color: var(--blue-400); }
.related-card img { width: 24px; height: 24px; object-fit: contain; flex-shrink: 0; }

/* ─── Notes box ─────────────────────────────────────────────────────────────── */
.notes-box {
  border-left: 3px solid var(--accent); padding: 1rem 1.25rem;
  background: var(--blue-50); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: .875rem; color: var(--gray-700); line-height: 1.6;
}
.notes-box strong { color: var(--blue-700); }

/* ─── Status dot ────────────────────────────────────────────────────────────── */
.status { display: inline-flex; align-items: center; gap: .35rem; font-size: .8rem; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.status-green  .status-dot { background: var(--success); }
.status-yellow .status-dot { background: var(--warning); }
.status-blue   .status-dot { background: var(--accent); }

/* ─── Footer ────────────────────────────────────────────────────────────────── */
.site-footer {
  text-align: center; padding: 2rem;
  font-size: .8rem; color: var(--gray-500);
  border-top: 1px solid var(--gray-300);
  background: var(--white);
  margin-top: 3rem;
}

/* ─── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero { padding: 3rem 1rem 2.5rem; }
  .section, .content { padding: 1.5rem 1rem; }
}