/* =========================================================
   Blog CIEL — thème clair identique à « Progression prof »
   (gris doux #e9eef4, cartes blanches, traits noirs 2px, cyan #22d3ee)
   Copie fidèle de /plateforme/progression/style.css
   ========================================================= */

:root {
  --bg: #e9eef4;
  --bg-2: #ffffff;
  --card: #ffffff;
  --card-2: #f1f5f9;
  --border: #000000;
  --border-soft: #333333;
  --text: #0f172a;
  --text-dim: #475569;
  --cyan: #22d3ee;
  --green: #16a34a;
  --accent: #04070e;
  --radius: 12px;
  --shadow: 4px 4px 0 rgba(0, 0, 0, 0.15);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Navigation ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: #ffffff;
  border-bottom: 2px solid var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}
.nav-inner {
  max-width: 1100px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-badge {
  background: var(--cyan);
  color: #ffffff; font-weight: 800; font-size: 0.85rem;
  padding: 6px 10px; border-radius: 8px; letter-spacing: 1px;
  border: 2px solid var(--border);
}
.brand-text { font-weight: 700; line-height: 1.15; }
.brand-text small { display: block; font-weight: 400; color: var(--text-dim); font-size: 0.75rem; }
.nav-links { display: flex; align-items: center; gap: 18px; }
.nav-links a { color: var(--text-dim); font-size: 0.95rem; font-weight: 600; }
.nav-links a:hover { color: var(--cyan); text-decoration: none; }
.btn-nav {
  background: var(--cyan);
  color: #ffffff !important; font-weight: 700;
  padding: 8px 14px; border-radius: 8px; font-size: 0.9rem !important;
  border: 2px solid var(--border);
}
.btn-nav:hover { filter: brightness(1.06); }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.6rem; cursor: pointer; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  background: var(--bg);
  padding: 120px 20px 80px;
  overflow: hidden;
}
.hero-bg { display: none; }
.hero-overlay { display: none; }
.hero-content { position: relative; z-index: 2; }
.hero-content { max-width: 780px; margin: 0 auto; text-align: center; }
.hero-eyebrow { color: var(--text-dim); text-transform: uppercase; letter-spacing: 2px; font-size: 0.85rem; margin-bottom: 16px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.1; margin-bottom: 10px; font-weight: 800; }
.accent { color: var(--accent); }
.hero-sub { font-size: clamp(1.05rem, 2.5vw, 1.3rem); color: var(--text-dim); margin-bottom: 22px; }
.hero-desc { font-size: 1.05rem; max-width: 620px; margin: 0 auto 32px; color: var(--text); }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-block; padding: 13px 26px; border-radius: 10px;
  font-weight: 700; font-size: 1rem;
  border: 2px solid var(--border);
  transition: transform 0.15s, filter 0.15s;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); filter: brightness(1.05); }
.btn-primary { background: var(--cyan); color: #ffffff; box-shadow: 2px 2px 0 var(--border); }
.btn-ghost { background: #ffffff; border: 2px solid var(--border); color: var(--text); box-shadow: 2px 2px 0 var(--border); }
.btn-ghost:hover { color: var(--cyan); }

/* ---------- Sections ---------- */
.section { padding: 70px 20px; }
.section-dark { background: #ffffff; border-top: 2px solid var(--border); border-bottom: 2px solid var(--border); }
.container { max-width: 1100px; margin: 0 auto; }
.section-title { font-size: clamp(1.5rem, 3.5vw, 2rem); text-align: center; margin-bottom: 8px; font-weight: 800; color: var(--text); }
.section-sub { text-align: center; color: var(--text-dim); margin-bottom: 40px; }
.section-note { text-align: center; color: var(--text-dim); margin-top: 26px; max-width: 700px; margin-left: auto; margin-right: auto; }

/* ---------- Grilles & cartes ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 18px; text-align: center; }

.card {
  background: var(--card); border: 2px solid var(--border);
  border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow);
  transition: transform 0.2s, border-color 0.2s;
}
.card:hover { transform: translateY(-3px); border-color: var(--cyan); }
.card h3 { margin-bottom: 10px; font-size: 1.15rem; font-weight: 800; color: var(--text); }
.card p { color: var(--text-dim); }
.card-icon { font-size: 2.2rem; margin-bottom: 10px; }
.card-img { width: 100%; height: 150px; object-fit: cover; border-radius: 8px; margin-bottom: 14px; border: 2px solid var(--border); }
.card-list { list-style: none; margin-top: 14px; }
.card-list li { padding: 6px 0 6px 22px; position: relative; color: var(--text-dim); font-size: 0.95rem; }
.card-list li::before { content: "▸"; position: absolute; left: 0; color: var(--cyan); }

.tag { display: inline-block; font-size: 0.75rem; font-weight: 700; padding: 3px 10px; border-radius: 20px; margin-bottom: 10px; letter-spacing: 0.5px; border: 1px solid var(--border-soft); }
.tag-cyber { background: #fee2e2; color: #b91c1c; border-color: #fca5a5; }
.tag-net { background: #e0f2fe; color: #0369a1; border-color: #7dd3fc; }
.tag-elec { background: #dcfce7; color: #15803d; border-color: #86efac; }

/* ---------- Stats ---------- */
.stat { background: var(--card); border: 2px solid var(--border); border-radius: var(--radius); padding: 24px 12px; box-shadow: var(--shadow); }
.stat-num { display: block; font-size: 2rem; font-weight: 800; color: var(--cyan); }
.stat-label { color: var(--text-dim); font-size: 0.9rem; }

/* ---------- Séance type ---------- */
.card-seance { margin-top: 26px; }
.seance-list { list-style: none; margin-top: 12px; }
.seance-list li { display: flex; align-items: center; gap: 14px; padding: 10px 0; color: var(--text); border-bottom: 1px dashed var(--border-soft); }
.seance-list li:last-child { border-bottom: none; }
.seance-list span {
  flex-shrink: 0; width: 30px; height: 30px; border-radius: 50%;
  background: var(--cyan); color: #ffffff;
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center; font-weight: 800;
}

/* ---------- Galerie ---------- */
.galerie-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.galerie-grid figure { margin: 0; background: var(--card); border: 2px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform 0.2s, border-color 0.2s; }
.galerie-grid figure:hover { transform: translateY(-3px); border-color: var(--cyan); }
.galerie-grid img { width: 100%; height: 160px; object-fit: cover; display: block; }
.galerie-grid figcaption { padding: 10px 14px; font-size: 0.9rem; color: var(--text-dim); text-align: center; }

/* ---------- Contact ---------- */
.contact-info h3 { margin-bottom: 12px; font-weight: 800; }
.contact-info p { color: var(--text-dim); margin-bottom: 8px; }
.logos { display: flex; gap: 16px; margin-top: 18px; align-items: center; }
.logos img { height: 52px; width: auto; border-radius: 6px; background: #fff; padding: 4px; border: 1px solid var(--border-soft); }

/* ---------- Footer ---------- */
.footer { background: #ffffff; border-top: 2px solid var(--border); padding: 28px 20px; text-align: center; }
.footer p { color: var(--text-dim); font-size: 0.9rem; }
.footer-small { margin-top: 6px; font-size: 0.8rem !important; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav-links {
    display: none; flex-direction: column; gap: 14px;
    position: absolute; top: 60px; left: 0; right: 0;
    background: #ffffff; padding: 20px; border-bottom: 2px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .section { padding: 54px 18px; }
}

/* =========================================================
   Blog CIEL — compléments au thème clair (aligné sur « Progression prof »)
   ========================================================= */
.zone-badge {
  display: inline-block; background: var(--cyan); color: #04121f;
  padding: 5px 16px; border-radius: 20px; font-weight: 700; font-size: 0.8rem;
  letter-spacing: 1px; border: 2px solid var(--border);
}
.actus-date {
  display: block; font-size: 0.78rem; font-weight: 700; color: #0e7490;
  text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 6px;
}
.liste .card h3 { color: var(--text); }
.blog-visual, .article-visual { border: 2px solid var(--border) !important; background: #f1f5f9 !important; }
.lecon { color: #b45309 !important; border: 2px solid var(--border) !important; }
.encadre { border: 2px solid var(--border) !important; }