body{
font-family:'Segoe UI', Arial, sans-serif;
margin:0;
background:linear-gradient(135deg,#eef2ff,#e0f2fe);
color:#1f2937;
}

#hamburger{
font-size:26px;
position:fixed;
top:15px;
left:15px;
cursor:pointer;
background:white;
padding:10px 14px;
border-radius:12px;
z-index:1001;
box-shadow:0 6px 15px rgba(0,0,0,0.2);
transition:0.2s;
}

#hamburger:hover{
transform:scale(1.1);
}

#menu{
position:fixed;
left:0;
top:0;
width:240px;
height:100%;
background:#111827;
color:white;
padding:25px;
padding-top:80px;

transform:translateX(-100%);

transition:0.3s;
box-shadow:4px 0 20px rgba(0,0,0,0.4);
z-index:1000;
}

#menu.active{
transform:translateX(0);
}

#menu h3{
margin-top:0;
margin-bottom:20px;
font-size:22px;
}

#menu button{
width:100%;
padding:12px;
margin:10px 0;
background:#1f2937;
color:white;
border:none;
border-radius:10px;
cursor:pointer;
font-size:15px;
font-weight:500;
transition: all 0.2s ease;
}

#menu button:hover{
background:linear-gradient(135deg,#2563eb,#1d4ed8);
color:white;
transform:translateX(5px);
}

#content{
margin-left:60px;
padding:40px;
}

h2{
font-size:28px;
margin-bottom:20px;
}

input{
padding:10px 14px;
border-radius:10px;
border:1px solid #d1d5db;
font-size:15px;
margin-right:8px;
outline:none;
transition:0.2s;
}

input:focus{
border-color:#3b82f6;
box-shadow:0 0 6px rgba(59,130,246,0.4);
}

#content button{
background:linear-gradient(135deg,#2563eb,#1d4ed8);
color:white;
padding:12px 26px;
font-size:16px;
border:none;
border-radius:12px;
cursor:pointer;
box-shadow:0 6px 16px rgba(0,0,0,0.25);
transition:0.25s;
}

#content button:hover{
background:linear-gradient(135deg,#1d4ed8,#1e40af);
transform:translateY(-2px);
}

#plot{
margin-top:30px;
background:white;
padding:20px;
border-radius:16px;
box-shadow:0 10px 30px rgba(0,0,0,0.2);
overflow:hidden;
width:100%;
}

#coords{
color:#2563eb !important;
background:none !important;
box-shadow:none !important;
padding:0 !important;
border-radius:0 !important;
}

body.dark{
background:#000 !important;
color:white;
}

body.dark #plot{
background:#000 !important;
}

body.dark #plot svg{
background:#000 !important;
}

body.dark #plot .grid line{
stroke:#333 !important;
}

body.dark #plot text{
fill:#ccc !important;
}

body.dark #plot path{
stroke:#fff !important;
stroke-width:2.5 !important;
}