:root{
  --bg:#0b1020;
  --bg-soft:#0f1630;
  --panel:#0f1836cc;
  --text:#e6f0ff;
  --muted:#9fb3d4;
  --accent:#6d2d79;   /* Plum */
  --accent-2:#ff8c40; /* Sunset Orange */
  --primary:#ff8c40;
  --shadow: 0 10px 30px rgba(0,0,0,.5);
}
*{box-sizing:border-box}
html,body{
  margin:0;
  padding:0;
  overflow:hidden;
  width:100%;
  height:100%;
}
body{
  background: radial-gradient(1200px 800px at 70% -10%,#122046 0%,#0b1020 40%,#070b16 100%);
  color:var(--text);
  font: 16px/1.4 ui-sans-serif, system-ui, Segoe UI, Roboto, Helvetica, Arial, Apple Color Emoji, Segoe UI Emoji;
  position:relative;
}
.app-bar{
  position:fixed; 
  top:12px; 
  left:12px; 
  right:12px; 
  /* Add safe area support for notched devices */
  top:max(12px, env(safe-area-inset-top));
  left:max(12px, env(safe-area-inset-left));
  right:max(12px, env(safe-area-inset-right));
  height:56px; 
  padding:8px 12px;
  background:var(--panel); backdrop-filter:blur(20px); border:1px solid #22325f; border-radius:16px;
  display:flex; align-items:center; justify-content:space-between; box-shadow:var(--shadow);
  z-index:10;
}

/* Mobile-first responsive design */
@media (max-width: 480px) {
  .app-bar {
    height:auto;
    min-height:48px;
    flex-wrap:wrap;
    gap:8px;
    padding:8px;
    top:4px;
    left:4px;
    right:4px;
  }
  
  .brand {
    flex:1;
    min-width:120px;
  }
  
  .actions {
    flex-wrap:wrap;
    gap:4px;
  }
  
  .btn {
    padding:0 8px;
    font-size:12px;
    height:32px;
  }
}
.brand{display:flex; align-items:center; gap:10px; font-weight:700}
.logo{display:inline-grid; place-items:center; width:32px; height:32px; border-radius:9px; background:linear-gradient(135deg,var(--accent-2),var(--accent)); color:#fff; box-shadow:0 8px 24px #6d2d7966}
.title{letter-spacing:.4px}
.actions{display:flex; gap:8px}
.btn{height:36px; padding:0 12px; border-radius:10px; border:1px solid #3a2246; background:#1a1424; color:var(--text); cursor:pointer}
.btn:hover{border-color:#533160}
.btn-primary{background:linear-gradient(180deg,#ff9a4d,#ff7a1a); border-color:#ff8c40; color:#1b1220}
.btn-accent{background:linear-gradient(180deg,#7a3489,#5c2568); color:#ffffff; border-color:#6d2d79}
.icon-btn{width:36px; height:36px; border-radius:10px; border:1px solid #3a2246; background:#1a1424; color:var(--text); cursor:pointer}

.layout{position:absolute; top:0; left:0; width:100%; height:100%}
.canvas-wrap{position:absolute; top:0; left:0; width:100%; height:100%; overflow:hidden}

/* Canvas responsive sizing */
@media (max-width: 480px) {
  .canvas-wrap {
    top:60px; /* Account for mobile app bar height */
    height:calc(100% - 60px);
  }
}

@media (max-width: 768px) and (min-width: 481px) {
  .canvas-wrap {
    top:54px; /* Account for tablet app bar height */
    height:calc(100% - 54px);
  }
}
canvas{position:absolute; top:0; left:0; width:100%; height:100%}
/* Allow zooming on mobile but keep layout simple */
@media (max-width: 768px), (pointer: coarse) {
  canvas{touch-action:none}
}
@media (min-width: 769px) and (pointer: fine) {
  canvas{touch-action:none}
}
#overlay{position:absolute; inset:0; width:100%; height:100%; pointer-events:none; touch-action:none}
/* Prevent scroll chaining/pull-to-refresh during interaction */
html, body, .canvas-wrap, canvas{ overscroll-behavior: contain }
.hint{position:absolute; left:50%; top:50%; transform:translate(-50%,-50%); color:var(--muted); background:#0c1434aa; border:1px solid #22325f; padding:8px 12px; border-radius:10px; pointer-events:none}

.panel{
  position:fixed; 
  right:12px; 
  right:max(12px, env(safe-area-inset-right));
  top:84px; 
  top:max(84px, calc(env(safe-area-inset-top) + 72px));
  bottom:12px; 
  bottom:max(12px, env(safe-area-inset-bottom));
  width:min(420px,95vw); 
  background:var(--panel); 
  border:1px solid #233056; 
  border-radius:16px; 
  box-shadow:var(--shadow); 
  transform:translateY(10px) scale(.98); 
  opacity:0; 
  pointer-events:none; 
  transition:.34s ease; 
  display:flex; 
  flex-direction:column; 
  z-index:30;
}
.panel[open], .panel.show{opacity:1; transform:none; pointer-events:auto}
.panel-header{display:flex; align-items:center; justify-content:space-between; padding:14px 16px; border-bottom:1px solid #22325f}
.panel-body{overflow:auto; padding:12px 16px; display:flex; flex-direction:column; gap:16px}
.panel-footer{padding:12px 16px; border-top:1px solid #22325f; display:flex; gap:8px}

.group{display:flex; flex-direction:column; gap:10px}
.group-title{font-size:14px; color:var(--muted); margin:0}

.segmented{display:flex; gap:8px; background:#120b24; padding:6px; border-radius:12px; border:1px solid #3a2246}
.seg{flex:1 1 auto; padding:10px 12px; border-radius:9px; border:1px solid transparent; background:transparent; color:var(--text); cursor:pointer}
.seg[aria-selected="true"]{background:linear-gradient(180deg,#2a1a3a,#1a1026); border-color:#6d2d79}

.chip-grid{display:grid; grid-template-columns:repeat(auto-fill, minmax(72px, 1fr)); gap:8px}
.chip{padding:10px 10px; border-radius:12px; border:1px solid #3a2246; background:#151026; color:var(--text); cursor:pointer; position:relative; overflow:hidden}
.chip .sub{font-size:11px; color:var(--muted)}
.chip.active{border-color:var(--accent-2); box-shadow:0 0 0 2px #ff8c4033 inset}
.chip.pop{animation:pop .32s ease}
@keyframes pop{0%{transform:scale(.8); opacity:.2} 60%{transform:scale(1.06)} 100%{transform:scale(1); opacity:1}}

.controls{display:grid; grid-template-columns:repeat(3,1fr); gap:8px}
label{display:flex; flex-direction:column; gap:6px; font-size:13px; color:var(--muted)}
label.checkbox{flex-direction:row; align-items:center; gap:8px; color:var(--text); font-weight:600}
label.checkbox input{accent-color: var(--accent-2); width:16px; height:16px}
label.checkbox:focus-within{outline:2px solid #ff8c4077; outline-offset:2px; border-radius:8px}
input[type="color"], input[type="range"]{width:100%}

.color-palette-grid{display:grid; grid-template-columns:repeat(6,1fr); gap:6px; margin-top:8px}
.color-swatch{width:32px; height:32px; border-radius:8px; border:2px solid transparent; cursor:pointer; transition:all 0.2s ease}
.color-swatch:hover{transform:scale(1.1); border-color:rgba(255,255,255,0.3)}
.color-swatch.active{border-color:var(--accent-2); box-shadow:0 0 0 2px #ff8c4033}

/* Tablet breakpoint */
@media (max-width: 768px) and (min-width: 481px) {
  .app-bar {
    height:48px;
    padding:6px 10px;
    top:6px;
    left:6px;
    right:6px;
  }
  
  .btn {
    height:36px;
    padding:0 10px;
    font-size:14px;
  }
}

/* Existing large mobile breakpoint - update */
@media (max-width: 900px) and (min-width: 769px) {
  .app-bar{
    top:8px; 
    left:8px; 
    right:8px; 
    /* Mobile safe area support */
    top:max(8px, env(safe-area-inset-top));
    left:max(8px, env(safe-area-inset-left));
    right:max(8px, env(safe-area-inset-right));
    height:52px;
  }
  .panel{
    top:76px; 
    top:max(76px, calc(env(safe-area-inset-top) + 68px));
    right:8px; 
    right:max(8px, env(safe-area-inset-right));
    left:8px; 
    left:max(8px, env(safe-area-inset-left));
    bottom:8px;
    bottom:max(8px, env(safe-area-inset-bottom));
    width:auto;
  }
  .controls{grid-template-columns:1fr}
  
  /* Mobile touch targets - minimum 44px */
  .btn{height:44px; padding:0 16px; font-size:16px}
  .icon-btn{width:44px; height:44px}
  .chip{min-height:52px; padding:12px}
  .seg{padding:14px 16px; font-size:16px}
  .color-swatch{width:44px; height:44px}
  
  /* Larger form controls for mobile */
  input[type="range"]{height:44px}
  select{height:44px; font-size:16px}
  label.checkbox{min-height:44px; padding:8px 0}
  label.checkbox input{width:20px; height:20px}
  
  /* Mobile-friendly spacing */
  .group{gap:16px}
  .chip-grid{gap:12px}
  .color-palette-grid{gap:8px}
  .panel-body{padding:16px 20px}
  
  /* Prevent zoom on input focus */
  input, select, textarea{font-size:16px}
}