body{
  background:#F5F7FA;
  font-family: 'Segoe UI', sans-serif;
  margin:0;
  padding-bottom:70px;
}

.header{
  background:linear-gradient(135deg,#1E88E5,#1565C0);
  color:#fff;
  padding:20px;
  border-bottom-left-radius:20px;
  border-bottom-right-radius:20px;
}

.card{
  background:#fff;
  border-radius:16px;
  box-shadow:0 4px 10px rgba(0,0,0,.08);
  padding:15px;
  margin-bottom:15px;
}

.btn-primary{
  background:#1E88E5;
  border:none;
  border-radius:12px;
  padding:12px;
  font-weight:600;
}

.btn-outline{
  border:2px solid #1E88E5;
  color:#1E88E5;
  border-radius:12px;
  padding:12px;
  background:#fff;
}

.stat{
  text-align:center;
  font-weight:600;
}

.bottom-nav{
  position:fixed;
  bottom:0;
  width:100%;
  background:#fff;
  display:flex;
  border-top:1px solid #ddd;
}

.bottom-nav a{
  flex:1;
  text-align:center;
  padding:8px;
  font-size:12px;
  color:#555;
  text-decoration:none;
}

.bottom-nav a.active{
  color:#1E88E5;
}