:root {
  --bg-color: #050505;
  --panel-bg: rgba(15, 15, 15, 0.85);
  --panel-border: #222;
  --text-light: #e2e8f0;
  --text-dim: #777;
  --accent-red: #ff3e3e;
  --accent-glowing: rgba(255, 62, 62, 0.5);
  
  --font-noir: 'Special Elite', Georgia, serif;
  --font-typewriter: 'Courier Prime', Courier, monospace;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-color);
  color: var(--text-light);
  font-family: var(--font-typewriter);
}

/* Gritty Newspaper Halftone Screen */
.halftone-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(255, 255, 255, 0.02) 15%, transparent 16%);
  background-size: 6px 6px;
  pointer-events: none;
  z-index: 999;
}

/* Vignette shadow */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  box-shadow: inset 0 0 120px rgba(0, 0, 0, 0.95);
  pointer-events: none;
  z-index: 998;
}

#canvas-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

/* HUD Overlay Panels */
.hud-overlay {
  position: absolute;
  z-index: 10;
  pointer-events: none;
  padding: 20px;
}

.hud-overlay.top-left {
  top: 0;
  left: 0;
  pointer-events: auto;
}

.hud-overlay.top-right {
  top: 0;
  right: 0;
}

.nav-back {
  display: inline-block;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: bold;
  letter-spacing: 0.1em;
  padding: 8px 12px;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  transition: all 0.2s ease;
}

.nav-back:hover {
  color: var(--accent-red);
  border-color: var(--accent-red);
  box-shadow: 0 0 10px var(--accent-glowing);
  text-shadow: 0 0 5px var(--accent-glowing);
}

.stats-panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  padding: 10px 15px;
  font-size: 0.75rem;
  color: var(--text-dim);
  text-align: right;
  letter-spacing: 1px;
}

.stats-panel span {
  color: var(--text-light);
  font-weight: bold;
}

/* Intro Activation Overlay */
#intro-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  cursor: pointer;
  transition: opacity 0.5s ease;
}

.intro-box {
  max-width: 500px;
  width: 90%;
  background: #111;
  border: 1px solid #222;
  padding: 40px;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
  position: relative;
}

.intro-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--accent-red);
}

.case-tag {
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  margin-bottom: 15px;
}

.intro-box h1 {
  font-family: var(--font-noir);
  font-size: 2.2rem;
  margin: 0 0 20px 0;
  letter-spacing: 1px;
  color: var(--text-light);
}

.intro-box p {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.6;
  margin-bottom: 30px;
}

.intro-box p.instruction {
  font-family: var(--font-noir);
  color: var(--accent-red);
  letter-spacing: 1px;
  animation: pulse 1.5s infinite;
}

#start-btn {
  background: transparent;
  color: var(--text-light);
  border: 1px solid var(--accent-red);
  padding: 12px 24px;
  font-family: var(--font-typewriter);
  font-size: 0.9rem;
  font-weight: bold;
  cursor: pointer;
  letter-spacing: 2px;
  transition: all 0.3s ease;
}

#start-btn:hover {
  background: var(--accent-red);
  color: #000;
  box-shadow: 0 0 15px var(--accent-red);
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}