/* ===== Reset & base ===== */
* { box-sizing: border-box; }
html { font-size: 16px; }
:root {
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #4f46e5;
  --primary-600: #4338ca;
  --ring: rgba(79,70,229,0.3);
  --card: #f8fafc;
  --border: #e5e7eb;
}
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

/* ===== Layout ===== */
.container { width: min(1200px, 92vw); margin: 0 auto; }
.header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,255,255,0.9);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: .8rem 0; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .75rem; text-decoration: none; color: inherit; }
.brand img { height: 40px; width: auto; }
.brand .title { font-weight: 700; letter-spacing: .2px; }
.nav { display: flex; align-items: center; gap: .25rem; }
.nav a {
  display: inline-block; padding: .6rem .85rem; text-decoration: none; color: #0f172a; border-radius: .6rem;
}
.nav a:hover, .nav a.active { background: var(--card); }
.cta {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--primary); color: white; border: 0; border-radius: .8rem;
  padding: .65rem .95rem; text-decoration: none; font-weight: 600;
}
.cta:hover { background: var(--primary-600); }
.burger { display: none; background: transparent; border: 0; padding: .5rem; border-radius: .6rem; }
.burger:focus { outline: 2px solid var(--ring); }
.burger span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; }

.hero { margin: 1rem 0 2rem; border-radius: 1rem; overflow: hidden; border: 1px solid var(--border); }
.hero img { display: block; width: 100%; height: auto; }

.grid {
  display: grid; grid-template-columns: 1fr 320px; gap: 2rem;
}
main article, .card {
  background: var(--bg); border: 1px solid var(--border); border-radius: 1rem; padding: 1.25rem;
  box-shadow: 0 1px 0 rgba(0,0,0,0.02);
}
aside .widget { background: var(--card); border: 1px solid var(--border); border-radius: 1rem; padding: 1rem; margin-bottom: 1rem; }

/* ===== Footer ===== */
footer {
  margin-top: 3rem; padding: 2rem 0; border-top: 1px solid var(--border); background: #fbfdff;
}
.footer-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.footer-col h4 { margin: 0 0 .6rem; }
.footer-col p, .footer-col li { margin: .2rem 0; color: var(--muted); }
.footer-bottom { margin-top: 1rem; font-size: .9rem; color: #64748b; }

/* ===== Utilities ===== */
.badge { display: inline-block; padding: .2rem .5rem; border-radius: .5rem; background: #eef2ff; color: #3730a3; font-weight: 600; font-size: .8rem; }
.button { display: inline-block; padding: .6rem .9rem; border-radius: .6rem; background: var(--card); border:1px solid var(--border); text-decoration: none; color: var(--text); }
.button:hover { border-color: #cbd5e1; }
.kbd { background: #0f172a; color: #fff; padding: .15rem .35rem; border-radius: .35rem; font-size: .8rem; }

/* ===== Lists & typography ===== */
h1, h2, h3 { line-height: 1.25; margin-top: 0; }
h1 { font-size: clamp(1.8rem, 2.6vw, 2.4rem); }
h2 { font-size: clamp(1.3rem, 2vw, 1.6rem); margin-top: .6rem; }
h3 { font-size: 1.1rem; }

ul.clean { list-style: none; padding: 0; margin: 0; }
ul.clean li { margin: .35rem 0; }

/* ===== Cards for audiences ===== */
.audiences {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
}
.audiences .card h3 { margin: .2rem 0 .4rem; }
.audiences .card p { color: var(--muted); font-size: .95rem; }
.audiences .card a { margin-top: .5rem; display: inline-block; }

/* ===== Blog list ===== */
.posts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.post { display: grid; gap: .5rem; }
.post .meta { color: #64748b; font-size: .9rem; }

/* ===== Tables ===== */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { border-bottom: 1px solid var(--border); padding: .5rem .25rem; text-align: left; }
.table th { color: #334155; font-weight: 700; }

/* ===== Forms ===== */
input, textarea {
  width: 100%; padding: .7rem .8rem; border-radius: .6rem;
  border: 1px solid var(--border); background: #fff; color: var(--text);
}
input:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
label { display: block; font-weight: 600; margin-top: .75rem; margin-bottom: .25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.form-actions { margin-top: 1rem; display: flex; gap: .6rem; }
.success { color: #16a34a; }
.error { color: #dc2626; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .grid { grid-template-columns: 1fr; }
  .audiences { grid-template-columns: repeat(2, 1fr); }
  .posts { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav { display: none; }
  .nav.open { display: grid; gap: .25rem; grid-template-columns: 1fr; margin-top: .5rem; }
  .burger { display: inline-block; }
  .audiences { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}