/* EduLexIA Premium (Africa images) */
:root{
  --bg:#0c1220; --surface:#0f1629; --card:rgba(255,255,255,.06); --border:rgba(255,255,255,.12);
  --ink:#e8eef6; --muted:#9fb0c8; --accent:#20c6b7; --accent-2:#6fb3ff;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}
:root.light{
  --bg:#ffffff; --surface:#f6f9fc; --card:#ffffff; --border:#e5edf7;
  --ink:#0e1b2b; --muted:#5a6a7a; --accent:#0aa7a1; --accent-2:#0a66ff;
  --shadow: 0 10px 30px rgba(10,20,40,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial; background:var(--bg); color:var(--ink); line-height:1.65}
.container{width:min(1180px,92vw);margin:0 auto}
.header{position:sticky;top:0;z-index:20;backdrop-filter:blur(10px);background:color-mix(in srgb, var(--bg) 70%, transparent);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.8rem 0}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none}
.logo{font-weight:900}
.logo .mark{color:var(--accent)} .logo .name{color:var(--ink);font-size:1.25rem}
.tag{color:var(--muted);font-weight:600}
.nav{display:flex;align-items:center;gap:1rem}
.nav a{color:var(--ink);text-decoration:none;font-weight:600;opacity:.9}
.nav a:hover{opacity:1}
.theme-toggle{border:1px solid var(--border);background:var(--card);color:var(--ink);padding:.55rem .75rem;border-radius:.7rem;cursor:pointer}

.hero{position:relative}
.hero img{width:100%;height:60vh;object-fit:cover}
.hero .veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.25),rgba(0,0,0,.55))}
.hero .copy{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:1rem}
.hero h1{font-size:clamp(1.8rem,4.2vw,3.2rem);margin:0 0 .5rem}
.hero p{max-width:72ch;margin:.2rem auto 1rem;color:#dfe8f3}
.buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.1rem;border-radius:.9rem;font-weight:800;text-decoration:none;border:1px solid var(--border);box-shadow:var(--shadow);background:var(--accent);color:#fff}
.btn.outline{background:transparent;border-color:var(--accent);color:var(--accent)}

.section{padding:3rem 0}
.section h2{margin:0 0 .6rem;font-size:clamp(1.4rem,2.8vw,2rem)}
.section .intro{color:var(--muted);margin:0 0 1.2rem}
.figure{position:relative;border-radius:1rem;overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);margin-bottom:1.2rem}
.figure img{width:100%;height:260px;object-fit:cover}
.legend{position:absolute;left:.8rem;bottom:.8rem;background:rgba(0,0,0,.55);padding:.3rem .6rem;border-radius:.5rem;color:#fff;font-weight:800}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.card{background:var(--card);border:1px solid var(--border);border-radius:1.1rem;padding:1.1rem;box-shadow:var(--shadow)}
.card h3{margin:.1rem 0 .5rem}
.pills{display:flex;gap:.5rem;flex-wrap:wrap}
.pill{border:1px solid var(--border);padding:.35rem .6rem;border-radius:999px;font-weight:700;opacity:.9}

.form{display:grid;gap:.9rem;max-width:640px}
.form label{font-weight:700}
.form input,.form textarea,.form select{width:100%;padding:.9rem;border-radius:.8rem;border:1px solid var(--border);background:color-mix(in srgb, var(--card) 85%, transparent);color:var(--ink);font:inherit}

.footer{border-top:1px solid var(--border);padding:1.2rem 0;background:color-mix(in srgb, var(--bg) 80%, var(--surface))}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap}
.cta-fab{position:fixed;right:1rem;bottom:1rem;z-index:30}
.cta-fab a{display:inline-flex;align-items:center;gap:.4rem;background:var(--accent-2);color:#fff;padding:.9rem 1rem;border-radius:999px;text-decoration:none;box-shadow:var(--shadow)}

@media (max-width:960px){.grid{grid-template-columns:1fr 1fr}.hero img{height:52vh}}
@media (max-width:560px){.grid{grid-template-columns:1fr}.nav{display:none}.hero img{height:44vh}}