/* === DESIGN SYSTEM — NEXUS === */
:root {
  --color-bg: #000008;
  --color-primary: #4488ff;
  --color-secondary: #334488;
  --color-text: #ccd6f6;
  --color-text-muted: #4a5568;
  --font-body: 'Courier New', monospace;
}

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

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  overflow: hidden;
  width: 100vw;
  height: 100vh;
}

canvas {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
}

/* === HUD === */
.hud-controls {
  z-index: 10;
}

/* === AUDIO TOGGLE === */
#audio-toggle {
  font-size: 14px;
  background-color: var(--color-primary);
  color: var(--color-bg);
  padding: 4px 8px;
  border: none;
  border-radius: 4px;
  font-family: var(--font-body);
  transition: background-color 0.3s ease;
  cursor: pointer;
}

#audio-toggle:hover {
  background-color: var(--color-secondary);
}

#audio-toggle.muted {
  background-color: var(--color-text-muted);
}

/* === DEBUG MODE === */
#debug-toggle {
  margin-left: 8px;
}

.collision-box {
  outline: 2px solid red;
  outline-offset: 2px;
}

.light-source {
  outline: 2px dashed yellow;
  outline-offset: 2px;
}

/* === OVERVIEW MODE === */
#overview-indicator {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  pointer-events: none;
  z-index: 20;
  border: 1px solid var(--color-primary);
  padding: 4px 10px;
  background: rgba(0, 0, 8, 0.6);
  white-space: nowrap;
  animation: overview-pulse 2s ease-in-out infinite;
}

#overview-indicator.visible {
  display: block;
}

.overview-hint {
  margin-left: 12px;
  color: var(--color-text-muted);
  font-size: 10px;
}

@keyframes overview-pulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

/* === PHOTO MODE === */
body.photo-mode .hud-controls {
  display: none;
}

body.photo-mode #overview-indicator {
  display: none !important;
}

#photo-indicator {
  display: none;
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  pointer-events: none;
  z-index: 20;
  border: 1px solid var(--color-primary);
  padding: 4px 12px;
  background: rgba(0, 0, 8, 0.5);
  white-space: nowrap;
  animation: overview-pulse 2s ease-in-out infinite;
}

#photo-indicator.visible {
  display: block;
}

.photo-hint {
  margin-left: 12px;
  color: var(--color-text-muted);
  font-size: 10px;
  letter-spacing: 0.1em;
}

#photo-focus {
  color: var(--color-primary);
}

/* === SOVEREIGNTY EASTER EGG === */
#sovereignty-msg {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #ffd700;
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  pointer-events: none;
  z-index: 30;
  border: 1px solid #ffd700;
  padding: 8px 20px;
  background: rgba(0, 0, 8, 0.7);
  white-space: nowrap;
  text-align: center;
}

#sovereignty-msg.visible {
  display: block;
  animation: sovereignty-flash 2.5s ease-out forwards;
}

@keyframes sovereignty-flash {
  0%   { opacity: 0; transform: translate(-50%, -50%) scale(0.85); }
  15%  { opacity: 1; transform: translate(-50%, -50%) scale(1.05); }
  40%  { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1); }
}

/* === OBJECT INSPECTION TOOLTIP === */
#inspect-tooltip {
  display: none;
  position: fixed;
  z-index: 50;
  background: rgba(0, 8, 24, 0.92);
  border: 1px solid var(--color-primary);
  padding: 8px 12px;
  font-family: var(--font-body);
  pointer-events: none;
  max-width: 280px;
}

#inspect-tooltip.visible {
  display: block;
}

#inspect-name {
  font-size: 11px;
  color: var(--color-primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

#inspect-desc {
  font-size: 11px;
  color: var(--color-text);
  line-height: 1.4;
  opacity: 0.85;
}

/* === CRT / CYBERPUNK OVERLAY === */
.crt-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  background: 
    linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.15) 50%), 
    linear-gradient(90deg, rgba(255, 0, 0, 0.04), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.04));
  background-size: 100% 4px, 4px 100%;
  animation: flicker 0.15s infinite;
  box-shadow: inset 0 0 100px rgba(0,0,0,0.9);
}

@keyframes flicker {
  0% { opacity: 0.95; }
  50% { opacity: 1; }
  100% { opacity: 0.98; }
}

.crt-overlay::after {
  content: " ";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: rgba(18, 16, 16, 0.1);
  opacity: 0;
  z-index: 999;
  pointer-events: none;
  animation: crt-pulse 4s linear infinite;
}

@keyframes crt-pulse {
  0% { opacity: 0.05; }
  50% { opacity: 0.15; }
  100% { opacity: 0.05; }
}