:root{
  --bg:#f3f6fb;
  --card:#ffffff;
  --primary:#2563eb;
  --secondary:#16a34a;
  --text:#1f2937;
  --muted:#6b7280;
}

*{box-sizing:border-box}

body{
  margin:0;
  font-family:Poppins,sans-serif;
  background:linear-gradient(180deg,#eef3ff,var(--bg));
  color:var(--text);
}

/* ===== Navbar ===== */
.navbar{
  background:#fff;
  box-shadow:0 6px 20px rgba(0,0,0,.06);
}
.nav-inner{
  max-width:1100px;
  margin:auto;
  padding:18px 20px;
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.logo{font-weight:700;font-size:20px}

/* ===== Hero ===== */
.hero{
  text-align:center;
  padding:50px 20px 30px;
}
.hero h1{font-size:38px;margin-bottom:8px}
.hero p{color:var(--muted)}

/* ===== Search & Filter ===== */
.tools{
  max-width:1100px;
  margin:0 auto 40px;
  padding:0 20px;
}
.search-box{
  width:100%;
  padding:14px 18px;
  border-radius:12px;
  border:1px solid #e5e7eb;
  font-size:15px;
  margin-bottom:18px;
}
.filters{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.filter-btn{
  padding:8px 16px;
  border-radius:999px;
  border:1px solid #e5e7eb;
  background:#fff;
  cursor:pointer;
  font-size:13px;
}
.filter-btn.active,
.filter-btn:hover{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
}

/* ===== Posts ===== */
.container{
  max-width:1100px;
  margin:auto;
  padding:0 20px 60px;
}
.posts{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:30px;
}
.card{
  background:var(--card);
  border-radius:18px;
  overflow:hidden;
  box-shadow:0 15px 35px rgba(0,0,0,.08);
  transition:.3s;
}
.card:hover{transform:translateY(-8px)}
.thumb{
  height:150px;
  background:linear-gradient(135deg,#93c5fd,#2563eb);
}
.card-content{padding:22px}
.badge{
  display:inline-block;
  background:#eef4ff;
  color:var(--primary);
  padding:5px 12px;
  font-size:12px;
  border-radius:999px;
  margin-bottom:10px;
}
.card h2{margin:0 0 8px;font-size:20px}
.meta{font-size:13px;color:var(--muted)}
.card p{font-size:14px;line-height:1.6}
.read-more{
  display:inline-block;
  margin-top:14px;
  font-weight:600;
  color:var(--primary);
  text-decoration:none;
}

/* ===== Comments ===== */
.comments{
  background:#f9fafb;
  padding:70px 20px;
}
.comment-box{
  max-width:800px;
  margin:auto;
  background:#fff;
  padding:35px;
  border-radius:18px;
  box-shadow:0 15px 40px rgba(0,0,0,.08);
}
.comment-box h2{
  margin-bottom:20px;
}
#commentForm{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-bottom:30px;
}
#commentForm input,
#commentForm textarea{
  padding:12px 14px;
  border-radius:10px;
  border:1px solid #e5e7eb;
  font-family:inherit;
}
#commentForm textarea{min-height:100px}
#commentForm button{
  align-self:flex-start;
  padding:10px 22px;
  border:none;
  border-radius:10px;
  background:var(--primary);
  color:#fff;
  font-weight:600;
  cursor:pointer;
}
.comment{
  background:#f3f6fb;
  padding:15px 18px;
  border-radius:12px;
  margin-bottom:15px;
}
.comment strong{
  display:block;
  margin-bottom:6px;
}
.comment small{
  font-size:12px;
  color:var(--muted);
}

/* ===== Footer ===== */
footer{
  text-align:center;
  padding:25px;
  background:#fff;
  color:var(--muted);
  font-size:13px;
}