:root{
  --bg:#140712;
  --panel:#161021;
  --border:rgb(78,42,110);
  --accent:rgb(162,95,224);
  --accent2:rgb(185,136,231);
  --accent3:rgb(224,95,162);
  --gold:#ffd700;
  --text:#f1ebff;
  --muted:#8d7aa8;
  --glow:0 0 20px rgba(162,95,224,.45);
  --glow2:0 0 20px rgba(185,136,231,.45);
  --cell:20px;
}

/* Light Mode — same purple theme */
body.light-mode {
  --bg:#f0eaf8;
  --panel:#ffffff;
  --border:rgb(180,140,220);
  --accent:rgb(130,60,200);
  --accent2:rgb(155,100,210);
  --accent3:rgb(200,60,140);
  --gold:#b8860b;
  --text:#1a0a2e;
  --muted:#6b4f8a;
  --glow:0 0 20px rgba(130,60,200,.25);
  --glow2:0 0 20px rgba(155,100,210,.25);
}

body.light-mode::before{
  background-image:
    linear-gradient(rgba(130,60,200,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130,60,200,0.05) 1px, transparent 1px);
}

*{ margin:0; padding:0; box-sizing:border-box; }

html, body{
  overflow-x:hidden;
  max-width:100%;
  touch-action:manipulation;
}

body{
  background:var(--bg);
  color:var(--text);
  font-family:'Poppins',sans-serif;
  min-height:100vh;
  transition:background .3s, color .3s;
  display:flex;
  flex-direction:column;
  align-items:center;
  overflow-y:auto;
}

body::before{
  content:'';
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(162,95,224,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(162,95,224,0.03) 1px, transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
  z-index:0;
}

#app{
  position:relative;
  z-index:1;
  width:100%;
  max-width:1300px;
  padding:16px 20px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:16px;
}

/* Header */
header{
  text-align:center;
  padding:8px 0 4px;
  position:relative;
  width:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
}

/* Theme Toggle Button */
.theme-toggle{
  position:absolute;
  right:0;
  top:0;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:50px;
  padding:7px 16px;
  cursor:pointer;
  font-size:11px;
  color:var(--accent);
  letter-spacing:1px;
  font-family:'Poppins',sans-serif;
  font-weight:600;
  transition:.2s;
  display:flex;
  align-items:center;
  gap:7px;
  white-space:nowrap;
  user-select:none;
}
.theme-toggle:hover{
  background:rgba(162,95,224,.12);
  transform:translateY(-1px);
}
.theme-toggle .toggle-icon{ font-size:15px; }

.title{
  font-family:'Poppins',sans-serif;
  font-size:clamp(18px,4vw,32px);
  background:linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  filter:drop-shadow(0 0 12px rgba(162,95,224,.5));
  letter-spacing:3px;
}

.subtitle{
  font-size:10px;
  color:var(--muted);
  letter-spacing:6px;
  margin-top:6px;
}

/* Game Layout */
.game-wrapper{
  display:flex;
  gap:22px;
  align-items:flex-start;
  width:100%;
  justify-content:center;
}

.side-panel{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:12px;
  padding:20px 18px;
  min-width:175px;
  max-width:195px;
  flex-shrink:0;
  display:flex;
  flex-direction:column;
  gap:20px;
  transition:background .3s, border-color .3s;
}

.stat-block{ display:flex; flex-direction:column; gap:5px; }

.stat-label{
  font-size:8px;
  color:var(--muted);
  letter-spacing:2px;
  text-transform:uppercase;
}

.stat-value{
  font-family:'Poppins',sans-serif;
  font-size:17px;
  color:var(--accent);
  text-shadow:var(--glow);
}
.stat-value.gold{ color:var(--gold); }
.stat-value.cyan{ color:var(--accent2); }

.divider{
  height:1px;
  background:linear-gradient(90deg, transparent, var(--border), transparent);
}

/* Canvas — bigger on desktop */
.canvas-container{
  position:relative;
  flex:1;
  min-width:0;
  max-width:600px;
}

canvas{ max-width:100%; height:auto; }

#gameCanvas{
  display:block;
  width:100%;
  border-radius:12px;
  border:2px solid var(--border);
  box-shadow:0 0 40px rgba(162,95,224,.08), inset 0 0 40px rgba(0,0,0,.6);
  image-rendering:pixelated;
  touch-action:none;
}

/* Overlays */
.overlay{
  position:absolute;
  inset:0;
  border-radius:12px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:20px;
  background:rgba(10,10,15,.92);
  backdrop-filter:blur(4px);
  z-index:10;
}
body.light-mode .overlay{ background:rgba(240,234,248,.92); }

.hidden{ display:none !important; }

.overlay-title{
  font-family:'Poppins',sans-serif;
  font-size:clamp(16px,3vw,26px);
  text-align:center;
  line-height:1.6;
}

.green{ color:var(--accent); }
.red{ color:var(--accent3); }
.gold{ color:var(--gold); }

.overlay-score{
  font-family:'Poppins',sans-serif;
  font-size:13px;
  color:var(--text);
  text-align:center;
  line-height:2;
}

/* Buttons */
.btn{
  font-family:'Poppins',sans-serif;
  font-weight:700;
  font-size:13px;
  letter-spacing:2px;
  padding:12px 28px;
  border:none;
  border-radius:8px;
  cursor:pointer;
  transition:.2s;
  text-transform:uppercase;
}
.btn:hover{ transform:translateY(-2px); }
.btn:active{ transform:scale(.96); }

.btn-primary{
  background:linear-gradient(135deg, rgb(162,95,224), rgb(185,136,231));
  color:#fff;
  box-shadow:var(--glow);
}
.btn-secondary{
  background:transparent;
  border:1px solid var(--accent);
  color:var(--accent);
}
.btn-sm{ font-size:11px; padding:8px 16px; }

/* Level bar */
.level-indicator{ margin-top:4px; }
.level-bar-bg{
  height:4px;
  background:rgba(162,95,224,.2);
  border-radius:2px;
  overflow:hidden;
}
.level-bar-fill{
  height:100%;
  background:var(--accent);
  border-radius:2px;
  transition:width .3s;
}

/* Power-up slots */
.powerup-slots{ display:flex; gap:6px; flex-wrap:wrap; }
.powerup-slot{
  width:30px;
  height:30px;
  border:1px solid var(--border);
  border-radius:6px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  opacity:.4;
  transition:.2s;
}
.powerup-slot.active{
  opacity:1;
  border-color:var(--accent);
  box-shadow:var(--glow);
}

/* Leaderboard */
.leaderboard{ display:flex; flex-direction:column; gap:5px; }
.lb-row{ display:flex; gap:6px; font-size:9px; align-items:center; }
.lb-rank{ color:var(--muted); width:20px; }
.lb-name{ color:var(--text); flex:1; }
.lb-score{ color:var(--accent); }

/* Settings Panel */
#settingsPanel{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:12px;
  padding:24px;
  width:100%;
  max-width:1300px;
  margin-top:8px;
  transition:background .3s;
}
.settings-title{
  font-size:14px;
  color:var(--accent);
  letter-spacing:2px;
  margin-bottom:20px;
}
.settings-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(220px, 1fr));
  gap:18px;
}
.setting-group{ display:flex; flex-direction:column; gap:6px; }
.setting-label{
  font-size:9px;
  color:var(--muted);
  letter-spacing:2px;
  text-transform:uppercase;
}
.setting-select, .setting-input{
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:6px;
  color:var(--text);
  padding:8px 10px;
  font-size:11px;
  font-family:'Poppins',sans-serif;
  outline:none;
  transition:background .3s;
}
.setting-select:focus, .setting-input:focus{ border-color:var(--accent); }
.setting-range{ width:100%; accent-color:var(--accent); }
.range-row{ display:flex; align-items:center; gap:10px; }
.range-val{ font-size:12px; color:var(--accent); min-width:20px; }

/* Toast */
#toast{
  position:fixed;
  top:20px;
  left:50%;
  transform:translateX(-50%) translateY(-80px);
  background:var(--panel);
  border:1px solid var(--accent);
  border-radius:8px;
  padding:10px 20px;
  font-size:11px;
  color:var(--accent);
  box-shadow:var(--glow);
  transition:.3s;
  z-index:100;
}
#toast.show{ transform:translateX(-50%) translateY(0); }

/* Mobile Arrow Controls — REMOVED */
#mobileControls{ display:none !important; }

/* Responsive */
@media (max-width:900px){
  .game-wrapper{
    flex-direction:column;
    align-items:center;
    width:100%;
  }
  .side-panel{
    flex-direction:row;
    flex-wrap:wrap;
    justify-content:center;
    min-width:unset;
    max-width:100%;
    width:100%;
    gap:14px;
  }
  .side-panel .divider{ display:none; }
  .canvas-container{
    width:100%;
    max-width:100%;
    display:flex;
    justify-content:center;
    flex:none;
  }
  #gameCanvas{ max-width:100%; height:auto; }
  .theme-toggle{
    position:static;
    margin-top:10px;
  }
}
body{
    transition: background 0.4s ease, color 0.4s ease;
}

.game-container{
    transition: background 0.4s ease, box-shadow 0.4s ease;
}