/* ============================================
   CHEMVENTUR v106 - MAIN STYLES
   Core styling, variables, and base elements
   ============================================ */

/* ===== CSS VARIABLES ===== */
:root {
  /* Background & Panel Colors */
  --bg-primary: #001100;
  --bg-secondary: #031107;
  --bg-panel: rgba(0, 10, 0, 0.85);
  --bg-input: #002200;
  --bg-hover: rgba(0, 255, 65, 0.1);
  
  /* Neon Theme Colors */
  --neon-green: #00ff41;
  --neon-green-dim: #00aa2a;
  --neon-green-glow: rgba(0, 255, 65, 0.5);
  
  /* Particle Colors */
  --color-proton: #ff3333;
  --color-neutron: #cccccc;
  --color-electron: #3388ff;
  --color-positron: #ff00ff;
  --color-nucleus: #ffaa00;
  
  /* Hole Colors */
  --color-blackhole: #000000;
  --color-whitehole: #ffffff;
  --color-event-horizon: #440088;
  
  /* Gun Colors */
  --color-shotgun: #ff8800;
  --color-ebeam: #00ffff;
  --color-antigun: #ff00ff;
  --color-gravity: #8800ff;
  --color-timezone: #00ffaa;
  
  /* UI Colors */
  --color-danger: #ff0044;
  --color-warning: #ffaa00;
  --color-success: #00ff41;
  
  /* ENV Calculator Colors */
  --env-temp: #ff6600;
  --env-press: #00ccff;
  --env-grav: #ffff00;
  --env-rad: #ff00ff;
  --env-elec: #00ffff;
  --env-mag: #ff0088;
  --env-em: #88ff00;
  --env-dm: #8800ff;
  
  /* Sizing */
  --panel-width: 360px;
  --border-radius-sm: 4px;
  --border-radius-md: 6px;
  --border-radius-lg: 10px;
  
  /* Typography */
  --font-main: "Courier New", monospace;
  --font-size-xs: 8px;
  --font-size-sm: 9px;
  --font-size-md: 10px;
  --font-size-lg: 12px;
  --font-size-xl: 15px;
  --font-size-title: 18px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
  
  /* Shadows & Glows */
  --glow-neon: 0 0 15px var(--neon-green);
  --glow-neon-strong: 0 0 25px var(--neon-green);
  --shadow-panel: 0 0 20px rgba(0, 255, 65, 0.3);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg-primary);
  color: var(--neon-green);
  font-family: var(--font-main);
  font-size: var(--font-size-md);
  line-height: 1.4;
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--neon-green-dim);
  border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--neon-green);
}

/* ===== CANVAS ===== */
canvas#game-canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: crisp-edges;
  position: relative;
  z-index: 5;
}

#canvas-container {
  position: absolute;
  left: var(--panel-width);
  right: 0;
  top: 0;
  bottom: 0;
  background: var(--bg-primary);
  z-index: 2;
}

/* ===== TYPOGRAPHY ===== */
h1 {
  font-size: var(--font-size-title);
  color: var(--neon-green);
  text-align: center;
  text-shadow: var(--glow-neon);
  margin: 4px 0;
}

h2 {
  font-size: var(--font-size-xl);
  color: var(--neon-green);
  text-shadow: 0 0 10px var(--neon-green);
  margin-bottom: 10px;
}

h3 {
  font-size: var(--font-size-lg);
  color: var(--neon-green);
  margin-bottom: 8px;
}

/* ===== SELECTION ===== */
::selection {
  background: var(--neon-green);
  color: var(--bg-primary);
}

/* ===== LINKS ===== */
a {
  color: var(--neon-green);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  text-shadow: var(--glow-neon);
}

/* ===== UTILITY CLASSES ===== */
.hidden {
  display: none !important;
}

.flex {
  display: flex;
}

.flex-wrap {
  flex-wrap: wrap;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.gap-xs { gap: 2px; }
.gap-sm { gap: 4px; }
.gap-md { gap: 8px; }
.gap-lg { gap: 12px; }

.text-center { text-align: center; }
.text-right { text-align: right; }

.mt-xs { margin-top: 2px; }
.mt-sm { margin-top: 4px; }
.mt-md { margin-top: 8px; }
.mt-lg { margin-top: 12px; }

.mb-xs { margin-bottom: 2px; }
.mb-sm { margin-bottom: 4px; }
.mb-md { margin-bottom: 8px; }
.mb-lg { margin-bottom: 12px; }

.p-xs { padding: 2px; }
.p-sm { padding: 4px; }
.p-md { padding: 8px; }
.p-lg { padding: 12px; }

/* ===== NEON TEXT EFFECTS ===== */
.neon-text {
  text-shadow: var(--glow-neon);
}

.neon-text-strong {
  text-shadow: var(--glow-neon-strong);
}

/* Color variants */
.text-proton { color: var(--color-proton); }
.text-neutron { color: var(--color-neutron); }
.text-electron { color: var(--color-electron); }
.text-positron { color: var(--color-positron); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }
.text-dim { color: #666; }

/* ===== RESPONSIVE BREAKPOINTS ===== */
@media (max-width: 768px) {
  :root {
    --panel-width: 280px;
    --font-size-md: 9px;
  }
}

@media (max-width: 480px) {
  :root {
    --panel-width: 100%;
  }
  
  #canvas-container {
    left: 0;
    top: 200px;
  }
}