/* style.css - Optimized, accessible, modern design */
:root{
  --bg:#f5f7fb;
  --card:#ffffff;
  --ink:#111827;
  --muted:#4b5563; /* darker for better WCAG contrast */
  --accent:#174ea6;
  --shadow:0 8px 24px rgba(2,6,23,0.08);
}

*{box-sizing:border-box;margin:0;padding:0}
html{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;}
body{line-height:1.6;}

/* Header */
.header{background:var(--accent);color:#fff;padding:40px 20px;text-align:center;}
.header h1{margin:0;font-size:clamp(22px,3.6vw,34px);font-weight:700;letter-spacing:0.2px;}
.header p{margin:8px 0 0;color:rgba(255,255,255,0.92);font-size:1rem;}

/* Navigation */
.nav{display:flex;justify-content:center;gap:12px;padding:12px;background:transparent;}
.nav-link{color:var(--accent);text-decoration:none;font-weight:600;}
.nav-link[aria-current="page"]{text-decoration:underline;}

/* Layout */
.container{max-width:980px;margin:28px auto;padding:0 18px;}
.card{background:var(--card);border-radius:12px;box-shadow:var(--shadow);padding:22px;margin-bottom:18px;}
.card-grid{display:grid;gap:18px;}
@media(min-width:900px){.card-grid{grid-template-columns:1fr 1fr;}}

/* Typography */
h2{font-size:20px;text-align:center;margin-top:6px;margin-bottom:14px;}
.section-title{display:block;text-align:center;font-weight:700;margin-bottom:12px;}
p.lead{text-align:center;color:var(--muted);margin:6px 0 18px;}
.mark{font-weight:700;}
.center{text-align:center;}

/* Lists */
ul{margin-left:1.2rem;line-height:1.6;}

/* Buttons */
.btn{display:inline-block;background:var(--accent);color:#fff;padding:12px 18px;border-radius:10px;text-decoration:none;font-weight:700;text-align:center;transition:all .2s ease;}
.btn:hover{opacity:.95;transform:translateY(-2px);}

/* Actions */
.actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:14px;text-align:center;}

/* Share buttons */
.share{display:flex;gap:8px;justify-content:center;margin-top:12px;flex-wrap:wrap;}
.share a{padding:10px 12px;border-radius:8px;color:#fff;text-decoration:none;font-weight:600;}
.share .fb{background:#3b5998;}
.share .x{background:#0f1724;}
.share .li{background:#0077b5;}

/* Utility */
.muted{color:var(--muted);font-size:.9rem;}