:root{
  --primary:#0A66C2;
  --secondary:#1E88E5;
  --background:#F4F7FB;
  --card:#ffffff;
  --text:#1F2937;
  --success:#2E7D32;
  --danger:#C62828;
  --shadow:0 10px 30px rgba(0,0,0,.08);
  --radius:18px;
}

*{
  box-sizing:border-box;
}

body{
  margin:0;
  font-family:Inter, Arial, sans-serif;
  background:var(--background);
  color:var(--text);
}

.navbar{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  padding:16px 24px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  color:white;
  position:sticky;
  top:0;
  z-index:999;
  box-shadow:var(--shadow);
}

.navbar a{
  color:white;
  text-decoration:none;
  margin:0 12px;
  font-weight:600;
}

.container{
  max-width:1200px;
  margin:30px auto;
  padding:20px;
}

.card{
  background:var(--card);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:var(--shadow);
}

.dashboard-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:20px;
}

.stat-card h2{
  margin:0;
  font-size:2rem;
}

.stat-card p{
  color:#666;
}

.btn{
  display:inline-block;
  padding:12px 18px;
  border-radius:12px;
  border:none;
  text-decoration:none;
  cursor:pointer;
  font-weight:600;
}

.btn-primary{
  background:var(--primary);
  color:white;
}

.btn-danger{
  background:var(--danger);
  color:white;
}

.form-group{
  margin-bottom:18px;
}

input, textarea, select{
  width:100%;
  padding:12px;
  border-radius:12px;
  border:1px solid #d7dce2;
}

.table-wrapper{
  overflow-x:auto;
}

table{
  width:100%;
  border-collapse:collapse;
  background:white;
  border-radius:14px;
  overflow:hidden;
}

table th{
  background:var(--primary);
  color:white;
  text-align:left;
  padding:14px;
}

table td{
  padding:12px 14px;
  border-bottom:1px solid #eee;
}

.hero{
  background:linear-gradient(135deg,#0A66C2,#4db6ff);
  color:white;
  padding:70px 30px;
  border-radius:24px;
  margin-bottom:30px;
}

.hero h1{
  font-size:3rem;
  margin-bottom:10px;
}

.login-wrapper{
  min-height:100vh;
  display:flex;
  justify-content:center;
  align-items:center;
  padding:20px;
}

.login-card{
  width:100%;
  max-width:420px;
  background:white;
  border-radius:24px;
  padding:40px;
  box-shadow:var(--shadow);
}

@media (max-width:768px){

  .navbar{
    flex-direction:column;
    gap:12px;
    text-align:center;
  }

  .hero h1{
    font-size:2rem;
  }

  .container{
    padding:12px;
  }

  .card{
    padding:18px;
  }

  table{
    font-size:14px;
  }
}