*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:Arial,sans-serif;
}

body{
  display:flex;
  background:#0f1115;
  color:white;
}

.sidebar{
  width:250px;
  min-height:100vh;
  background:#161a22;
  padding:30px 20px;
  border-right:1px solid #242a36;
}

.logo{
  font-size:28px;
  font-weight:bold;
  margin-bottom:40px;
  color:#ff8c00;
}

.sidebar nav{
  display:flex;
  flex-direction:column;
  gap:18px;
}

.sidebar a{
  color:#b8c0d4;
  text-decoration:none;
  transition:.2s;
}

.sidebar a:hover{
  color:white;
}

.main{
  flex:1;
  padding:40px;
}

.hero{
  margin-bottom:40px;
}

.hero h1{
  font-size:48px;
  line-height:1.1;
  max-width:800px;
  margin-bottom:20px;
}

.hero p{
  color:#a4adbf;
  max-width:650px;
  line-height:1.6;
  margin-bottom:30px;
}

.buttons{
  display:flex;
  gap:15px;
}

button{
  border:none;
  padding:14px 24px;
  border-radius:12px;
  cursor:pointer;
  font-size:15px;
}

.primary{
  background:#ff8c00;
  color:white;
}

.secondary{
  background:#1b2130;
  color:white;
}

.stats{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:20px;
  margin-bottom:40px;
}

.card{
  background:#171c25;
  padding:24px;
  border-radius:18px;
  border:1px solid #242a36;
}

.card span{
  color:#98a3b8;
}

.card h2{
  margin:14px 0;
  font-size:32px;
}

.dashboard{
  display:grid;
  grid-template-columns:2fr 1fr;
  gap:20px;
}

.panel{
  background:#171c25;
  padding:24px;
  border-radius:18px;
  border:1px solid #242a36;
}

.panel h3{
  margin-bottom:20px;
}

table{
  width:100%;
  border-collapse:collapse;
}

th,td{
  text-align:left;
  padding:14px 0;
  border-bottom:1px solid #242a36;
}

.online{
  color:#33d17a;
}

.offline{
  color:#ff6666;
}

ul{
  display:flex;
  flex-direction:column;
  gap:14px;
  color:#c8d0e0;
}

@media(max-width:900px){

  body{
    flex-direction:column;
  }

  .sidebar{
    width:100%;
    min-height:auto;
  }

  .dashboard{
    grid-template-columns:1fr;
  }

  .hero h1{
    font-size:34px;
  }
}