body{
  margin:0;
  padding:0;
  font-family:Arial,sans-serif;
  background:linear-gradient(180deg,#0b1220,#0f172a);
  color:#e5e7eb;
  line-height:1.8;
}

/* ================= NAV BAR ================= */
nav{
  background:rgba(17,24,39,0.9);
  backdrop-filter: blur(10px);
  padding:12px;
  position:sticky;
  top:0;
  display:flex;
  gap:12px;
  overflow-x:auto;
  white-space:nowrap;
  border-bottom:1px solid #1f2937;
  z-index:1000;
}

nav a{
  color:#cbd5e1;
  text-decoration:none;
  font-weight:bold;
  padding:8px 12px;
  border-radius:8px;
  flex-shrink:0;
  transition:0.2s;
}

nav a:hover{
  background:#1f2937;
  color:#22c55e;
}

nav a.active{
  color:#000;
  background:#22c55e;
  border-radius:8px;
}

/* ================= MENU BUTTON ================= */
.menu-btn{
  position:fixed;
  top:70px;
  left:15px;
  width:50px;
  height:50px;
  background:#22c55e;
  color:white;
  border:none;
  font-size:20px;
  border-radius:10px;
  z-index:2001;
  cursor:pointer;
  box-shadow:0 6px 15px rgba(0,0,0,0.3);
}

/* ================= OVERLAY ================= */
.overlay{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:rgba(0,0,0,0.5);
  display:none;
  z-index:2000;
}

.overlay.show{
  display:block;
}

/* ================= SIDEBAR ================= */
.sidebar{
  position:fixed;
  top:0;
  left:-260px;
  width:260px;
  height:100%;
  background:#0f172a;
  padding-top:70px;
  transition:0.3s ease;
  z-index:2002;
  box-shadow:2px 0 20px rgba(0,0,0,0.4);
}

.sidebar.show{
  left:0;
}

.sidebar a{
  display:block;
  padding:14px 20px;
  color:#e5e7eb;
  text-decoration:none;
  border-bottom:1px solid #1f2937;
  font-weight:bold;
}

.sidebar a:hover{
  background:#1f2937;
  color:#22c55e;
}

/* ================= HEADINGS ================= */
h1{
  text-align:center;
  color:#facc15;
  margin-top:90px;
  font-size:28px;
}

h2{
  color:#22c55e;
  margin-top:40px;
  padding-left:15px;
  border-left:4px solid #22c55e;
  max-width:900px;
  margin-left:auto;
  margin-right:auto;
}

/* ================= PARAGRAPHS ================= */
p{
  max-width:850px;
  margin:12px auto;
  padding:14px 18px;
  background:#111827;
  border-radius:10px;
  box-shadow:0 4px 12px rgba(0,0,0,0.25);
  color:#cbd5e1;
}

/* ================= LISTS ================= */
ul{
  max-width:850px;
  margin:10px auto;
  padding:0;
}

li{
  list-style:none;
  background:#111827;
  margin:10px 0;
  padding:12px 15px;
  border-radius:10px;
  border-left:4px solid #22c55e;
  color:#e5e7eb;
  box-shadow:0 3px 10px rgba(0,0,0,0.2);
}

/* ================= RESPONSIVE ================= */
@media (max-width:768px){
  h1{
    font-size:22px;
    margin-top:80px;
  }

  h2{
    font-size:18px;
  }

  p, li{
    font-size:14px;
  }

  nav{
    padding:10px;
  }
}