@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;700;900&family=Rajdhani:wght@400;500;600;700&family=Share+Tech+Mono&display=swap');

:root {
  --font-hud: 'Orbitron', system-ui, sans-serif;
  --font-data: 'Share Tech Mono', monospace;
  --font-ui: 'Rajdhani', sans-serif;

  /* Theme Palette: Tactical Amber & Emerald Green */
  --bg-primary: #0a0c10;
  --bg-secondary: #0f131a;
  --bg-glass: rgba(15, 19, 26, 0.75);
  --border-glass: rgba(0, 255, 128, 0.15);
  --shadow-glass: rgba(0, 0, 0, 0.5);
  
  --color-green: #00ff80;
  --color-green-dim: rgba(0, 255, 128, 0.5);
  --color-green-glow: rgba(0, 255, 128, 0.2);
  --color-amber: #ffaa00;
  --color-amber-dim: rgba(255, 170, 0, 0.5);
  --color-red: #ff3344;
  --color-red-glow: rgba(255, 51, 68, 0.3);
  
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #475569;
  
  font-family: var(--font-ui);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  user-select: none;
}

body, html {
  margin: 0;
  padding: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: var(--bg-primary);
}

/* Background grid overlay */
.tactical-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  background-image: 
    linear-gradient(var(--border-glass) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-glass) 1px, transparent 1px);
  background-size: 50px 50px;
  background-position: center;
  opacity: 0.25;
}

/* Scan line simulation */
.scanlines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  pointer-events: none;
  background: linear-gradient(
    rgba(18, 16, 16, 0) 50%, 
    rgba(0, 0, 0, 0.25) 50%
  );
  background-size: 100% 4px;
}

.scanline-sweep {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 10px;
  background: linear-gradient(to bottom, rgba(0, 255, 128, 0) 0%, rgba(0, 255, 128, 0.08) 50%, rgba(0, 255, 128, 0) 100%);
  z-index: 9998;
  pointer-events: none;
  animation: sweep 8s linear infinite;
}

@keyframes sweep {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}

/* Ambient shadow vignette */
.vignette {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(circle, transparent 40%, rgba(5, 6, 8, 0.85) 100%);
}

/* Glassmorphism Tactical Panels */
.hud-panel {
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  box-shadow: 0 8px 32px 0 var(--shadow-glass), inset 0 0 12px rgba(0, 255, 128, 0.05);
  border-radius: 6px;
  padding: 15px;
  z-index: 10;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  box-sizing: border-box;
}

.hud-panel:hover {
  border-color: var(--color-green-dim);
  box-shadow: 0 8px 32px 0 var(--shadow-glass), inset 0 0 20px var(--color-green-glow);
}

/* Futuristic tactical buttons */
.hud-btn {
  background: rgba(0, 255, 128, 0.06);
  border: 1px solid var(--color-green-dim);
  color: var(--color-green);
  font-family: var(--font-hud);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease-in-out;
  box-shadow: 0 0 5px rgba(0, 255, 128, 0.1);
  box-sizing: border-box;
}

.hud-btn:hover:not(:disabled) {
  background: var(--color-green-glow);
  color: #fff;
  border-color: var(--color-green);
  box-shadow: 0 0 15px rgba(0, 255, 128, 0.3);
  transform: translateY(-1px);
}

.hud-btn:active:not(:disabled) {
  transform: translateY(1px);
  box-shadow: 0 0 8px rgba(0, 255, 128, 0.2);
}

.hud-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  border-color: var(--text-muted);
  color: var(--text-muted);
}

.hud-btn.danger {
  border-color: rgba(255, 51, 68, 0.5);
  color: var(--color-red);
  background: rgba(255, 51, 68, 0.05);
}

.hud-btn.danger:hover:not(:disabled) {
  background: var(--color-red-glow);
  color: #fff;
  border-color: var(--color-red);
  box-shadow: 0 0 15px rgba(255, 51, 68, 0.3);
}

.hud-btn.active {
  background: var(--color-green);
  color: var(--bg-primary);
  border-color: var(--color-green);
  box-shadow: 0 0 12px var(--color-green-dim);
}

.hud-btn.active:hover {
  background: #fff;
  color: var(--bg-primary);
  border-color: #fff;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
}

/* Sliders styling */
.hud-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--text-muted);
  outline: none;
  border-radius: 2px;
  margin: 10px 0;
}

.hud-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-green);
  cursor: pointer;
  box-shadow: 0 0 10px var(--color-green);
  transition: transform 0.1s ease;
}

.hud-slider::-webkit-slider-thumb:hover {
  transform: scale(1.3);
}

/* Custom Scrollbar for HUD elements */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: rgba(15, 19, 26, 0.5);
}

::-webkit-scrollbar-thumb {
  background: var(--border-glass);
  border-radius: 3px;
}

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

/* Font classes */
.font-hud { font-family: var(--font-hud); }
.font-data { font-family: var(--font-data); }
.font-ui { font-family: var(--font-ui); }

/* Glowing text effects */
.glow-green {
  color: var(--color-green);
  text-shadow: 0 0 8px var(--color-green-glow);
}

.glow-amber {
  color: var(--color-amber);
  text-shadow: 0 0 8px var(--color-amber-dim);
}

.glow-red {
  color: var(--color-red);
  text-shadow: 0 0 8px var(--color-red-glow);
}

/* Layout utilities */
.hud-header {
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 8px;
  margin-bottom: 12px;
  font-family: var(--font-hud);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Status flashing dot */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-green);
  box-shadow: 0 0 8px var(--color-green);
  display: inline-block;
  margin-right: 6px;
}

.status-dot.active {
  animation: blink 1.5s infinite steps(1);
}

.status-dot.paused {
  background-color: var(--color-amber);
  box-shadow: 0 0 8px var(--color-amber);
}

.status-dot.stopped {
  background-color: var(--color-red);
  box-shadow: 0 0 8px var(--color-red);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

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