body{
    margin:0;
    background:darkgray;
    overflow:hidden;
    display:flex;
    justify-content:center;
    align-items:center;
}

#verticalButtons{
    display:flex;
    flex-direction:column;
}

button{
    border: none;
    border-radius: 5px;
    padding: 5px 5px 7px 5px;
    margin: 2px;
    cursor:pointer;
}
button:hover{
    background:blue;
}

#networkCanvas{
    background:black;
}
#carCanvas{
    background:lightgray;
}

/* Settings Panel */
#settingsPanel{
    position:fixed;
    top:0;
    right:0;
    width:260px;
    height:100vh;
    background:#1a1a2e;
    color:#eee;
    overflow-y:auto;
    transform:translateX(0);
    transition:transform 0.3s ease;
    z-index:100;
    font-family:sans-serif;
    font-size:12px;
    box-sizing:border-box;
    padding:8px;
}

#settingsPanel.collapsed{
    transform:translateX(100%);
}

#settingsHeader{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:4px 0 8px;
    border-bottom:1px solid #333;
    margin-bottom:8px;
}

#settingsHeader span{
    font-size:15px;
    font-weight:bold;
}

#settingsHeader button{
    background:#333;
    color:#eee;
    font-size:16px;
    padding:2px 8px;
    border-radius:3px;
}
#settingsHeader button:hover{
    background:#555;
}

#settingsBody fieldset{
    border:1px solid #333;
    border-radius:4px;
    padding:6px 8px;
    margin:0 0 8px;
}

#settingsBody legend{
    font-size:11px;
    text-transform:uppercase;
    letter-spacing:0.5px;
    color:#8888cc;
    padding:0 4px;
}

#settingsBody label{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:3px 0;
    gap:8px;
}

#settingsBody label.checkbox-row{
    justify-content:flex-start;
}

#settingsBody input[type="number"]{
    width:55px;
    background:#0e0e1a;
    color:#eee;
    border:1px solid #444;
    border-radius:3px;
    padding:2px 4px;
    text-align:center;
}

.range-row{
    display:flex;
    align-items:center;
    gap:6px;
    flex:1;
    max-width:130px;
}

.range-row input[type="range"]{
    flex:1;
    min-width:0;
    accent-color:#6666cc;
}

.range-val{
    min-width:32px;
    text-align:right;
    font-size:11px;
    color:#aaa;
    font-variant-numeric:tabular-nums;
}

#settingsBody input[type="checkbox"]{
    accent-color:#6666cc;
    margin-right:4px;
}

#presets{
    display:flex;
    flex-wrap:wrap;
    gap:4px;
    align-items:center;
    margin-bottom:6px;
}

#presets span{
    font-size:11px;
    color:#888;
    width:100%;
}

.preset-btn{
    flex:1;
    padding:4px 2px;
    font-size:10px;
    background:#2a2a44;
    color:#bbb;
    border:1px solid #444;
    border-radius:3px;
}
.preset-btn:hover{
    background:#3a3a66;
    color:#fff;
}

#applyBtn{
    display:block;
    width:100%;
    padding:8px;
    margin-top:4px;
    background:#4444aa;
    color:#fff;
    font-size:13px;
    font-weight:bold;
    border:none;
    border-radius:4px;
    cursor:pointer;
}
#applyBtn:hover{
    background:#5555cc;
}

/* Tooltips */
#settingsBody label[title]{
    cursor:help;
    position:relative;
}

#settingsBody label[title]:hover::after{
    content:attr(title);
    position:absolute;
    left:0;
    bottom:calc(100% + 4px);
    background:#111;
    color:#ddd;
    padding:6px 10px;
    border-radius:4px;
    font-size:11px;
    line-height:1.4;
    max-width:220px;
    white-space:normal;
    z-index:200;
    pointer-events:none;
    box-shadow:0 2px 8px rgba(0,0,0,0.5);
}

/* Help Overlay */
#helpOverlay{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,0.8);
    z-index:300;
    display:flex;
    justify-content:center;
    align-items:center;
    padding:20px;
}

#helpOverlay.hidden{
    display:none;
}

#helpContent{
    background:#1a1a2e;
    color:#ddd;
    max-width:540px;
    max-height:90vh;
    overflow-y:auto;
    border-radius:8px;
    padding:24px 28px;
    font-family:sans-serif;
    font-size:13px;
    line-height:1.6;
    position:relative;
}

#helpContent h2{
    margin:0 0 12px;
    color:#fff;
    font-size:20px;
}

#helpContent h3{
    margin:16px 0 6px;
    color:#aab;
    font-size:14px;
    text-transform:uppercase;
    letter-spacing:0.5px;
}

#helpContent ol,
#helpContent ul{
    padding-left:20px;
    margin:4px 0 8px;
}

#helpContent li{
    margin-bottom:4px;
}

#helpContent strong{
    color:#fff;
}

#helpContent table{
    width:100%;
    border-collapse:collapse;
    margin-top:6px;
}

#helpContent td{
    padding:4px 8px;
    border-bottom:1px solid #333;
}

#helpContent td:first-child{
    width:32px;
    text-align:center;
    font-size:16px;
}

#helpClose{
    position:absolute;
    top:10px;
    right:12px;
    background:#333;
    color:#eee;
    font-size:18px;
    padding:2px 10px;
    border-radius:4px;
}
#helpClose:hover{
    background:#555;
}