/* ========== Base Reset ========== */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
html, body { margin: 0; padding: 0; }
img { max-width: 100%; height: auto; display: block; }

/* ========== Theme Tokens ========== */
:root{
  --bg: #ffffff;
  --fg: #101418;
  --muted: #5b6670;
  --link: #0f6cbd;  /* MS blue-inspired */
  --link-hover:#0b5aa0;
  --border:#e6e8ea;
  --surface:#f7f9fb;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(16,20,24,0.08);
}

/* ========== Global ========== */
body{
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji", "Segoe UI Symbol";
  line-height: 1.6;
  font-size: 16px;
}
a{ color: var(--link); text-decoration: none; }
a:hover{ color: var(--link-hover); text-decoration: underline; }
.container{
  width: min(1100px, 92vw);
  margin: 0 auto;
  padding: 0 0 2rem 0;
}
header.site-header{
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(6px);
}
nav.topnav{
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 0;
}
nav .brand{ font-weight: 700; letter-spacing: .2px; font-size: 1.05rem; }
nav .menu{ display: flex; gap: 1rem; }
nav .menu a{ padding: .5rem .75rem; border-radius: 10px; }
nav .menu a.active, nav .menu a:hover{ background: var(--surface); text-decoration: none; }

/* ========== Hero ========== */
.hero{
  padding: 3rem 0 2rem 0;
}
.hero h1{ 
  font-size: clamp(1.8rem, 2.4vw + 1.4rem, 3rem); 
  line-height: 1.2; margin: 0 0 .75rem 0; 
}
.hero p.lead{ font-size: 1.1rem; color: var(--muted); margin: 0 0 1rem 0; }
.hero-cta{ display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1rem; }
.btn{
  display: inline-flex; align-items: center; justify-content: center;
  padding: .75rem 1.1rem; border-radius: 12px; border: 1px solid var(--border);
  background: var(--bg); color: var(--fg); font-weight: 600;
}
.btn.primary{ background: var(--link); color: #fff; border-color: var(--link); }
.btn.primary:hover{ background: var(--link-hover); }
.badges{ display: flex; gap: 1rem; align-items: center; margin-top: 1rem; flex-wrap: wrap;}
.badge{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .35rem .75rem;
  font-size: .9rem;
  color: #21313f;
}

/* ========== Grids & Cards ========== */
.grid{
  display: grid; gap: 1.5rem;
  grid-template-columns: repeat(auto-fill,minmax(280px,1fr));
}
.card{
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.1rem;
}
.card h3{ margin: .25rem 0 .5rem 0; font-size: 1.05rem; }
.card p{ margin: 0 0 .5rem 0; color: var(--muted); }
.card a.more{ font-weight: 600; }

/* ========== Sections ========== */
section{ padding: 2rem 0; }
section h2{ font-size: 1.55rem; margin: 0 0 1rem 0; }
.kicker{ color: var(--muted); text-transform: uppercase; letter-spacing: .12em; font-size: .8rem; }

/* ========== Blog ========== */
.post-header h1{ margin-bottom: .25rem; }
.post-meta{ color: var(--muted); font-size: .9rem; margin-bottom: 1rem; }
.featured-image{ border-radius: 12px; border: 1px solid var(--border); }
.post-content{ margin-top: 1.5rem; }
.related-posts{ margin-top: 2rem; border-top: 1px solid var(--border); padding-top: 1rem; }
.tag{ display:inline-flex; background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: .25rem .6rem; margin-right: .35rem; font-size: .85rem; color:#21313f; }

/* ========== Footer ========== */
.site-footer{ border-top: 1px solid var(--border); padding-top: 1.5rem; }
.cta-footer{
  background: var(--link);
  color: #fff;
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}
.cta-footer a.btn{ background:#fff; color: var(--link); border-color: transparent; }
.footer-meta{ color: var(--muted); font-size: .9rem; margin-top: 1rem; }