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

body {
  overflow: hidden;
  background: #000;
  font-family: 'Courier New', monospace;
  color: #e0e0e0;
}

canvas#game-canvas {
  display: block;
  width: 100vw;
  height: 100vh;
}

.hidden { display: none !important; }

/* Loading Screen */
#loading-screen {
  position: fixed;
  inset: 0;
  background: #0a1628;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.loading-content {
  text-align: center;
}

.loading-content h1 {
  font-size: 3rem;
  letter-spacing: 0.5em;
  color: #4ecdc4;
  text-shadow: 0 0 30px rgba(78, 205, 196, 0.5);
  margin-bottom: 0.5rem;
}

.subtitle {
  font-size: 0.9rem;
  color: #6a8caf;
  letter-spacing: 0.3em;
  margin-bottom: 2rem;
}

.loading-bar {
  width: 300px;
  height: 3px;
  background: #1a3a5c;
  margin: 0 auto 1rem;
  border-radius: 2px;
  overflow: hidden;
}

.loading-fill {
  height: 100%;
  width: 0%;
  background: #4ecdc4;
  transition: width 0.3s ease;
  box-shadow: 0 0 10px rgba(78, 205, 196, 0.8);
}

.loading-text {
  font-size: 0.8rem;
  color: #4a6a8a;
  letter-spacing: 0.2em;
}

/* Start Screen */
#start-screen {
  position: fixed;
  inset: 0;
  background: rgba(10, 22, 40, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.start-content {
  text-align: center;
  max-width: 600px;
  padding: 2rem;
}

.start-content h1 {
  font-size: 2.5rem;
  letter-spacing: 0.5em;
  color: #4ecdc4;
  text-shadow: 0 0 30px rgba(78, 205, 196, 0.5);
  margin-bottom: 0.5rem;
}

.briefing {
  margin: 2rem 0;
  text-align: left;
  line-height: 1.8;
  color: #8ab4d4;
  font-size: 0.95rem;
}

.briefing p {
  margin-bottom: 1rem;
}

.briefing .hint {
  color: #f4a261;
  font-style: italic;
}

#start-btn {
  background: transparent;
  border: 1px solid #4ecdc4;
  color: #4ecdc4;
  padding: 1rem 3rem;
  font-family: 'Courier New', monospace;
  font-size: 1.1rem;
  letter-spacing: 0.3em;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 1.5rem;
}

#start-btn:hover {
  background: rgba(78, 205, 196, 0.15);
  box-shadow: 0 0 20px rgba(78, 205, 196, 0.3);
}

.btn-sub {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: #6a8caf;
}

.controls-hint {
  font-size: 0.75rem;
  color: #3a5a7a;
  letter-spacing: 0.15em;
}

/* HUD */
#hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
}

/* Crosshair */
#crosshair {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.crosshair-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(78, 205, 196, 0.6);
  box-shadow: 0 0 6px rgba(78, 205, 196, 0.3);
}

/* Interaction Prompt */
#interaction-prompt {
  position: absolute;
  bottom: 40%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(10, 22, 40, 0.8);
  border: 1px solid rgba(78, 205, 196, 0.3);
  padding: 0.5rem 1.2rem;
  border-radius: 4px;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: #4ecdc4;
  backdrop-filter: blur(4px);
  animation: promptFadeIn 0.2s ease;
}

#prompt-icon {
  margin-right: 0.5rem;
}

@keyframes promptFadeIn {
  from { opacity: 0; transform: translateX(-50%) translateY(5px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Narrative Panel */
#narrative-panel {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(10, 22, 40, 0.95);
  border: 1px solid rgba(78, 205, 196, 0.4);
  padding: 2rem;
  max-width: 550px;
  width: 90%;
  max-height: 70vh;
  overflow-y: auto;
  border-radius: 4px;
  backdrop-filter: blur(8px);
  pointer-events: auto;
  animation: panelSlideIn 0.3s ease;
}

.narrative-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(78, 205, 196, 0.2);
}

#narrative-title {
  color: #f4a261;
  font-size: 1rem;
  letter-spacing: 0.2em;
  font-weight: bold;
}

#narrative-close {
  background: none;
  border: none;
  color: #4a6a8a;
  font-size: 1.5rem;
  cursor: pointer;
  pointer-events: auto;
  padding: 0 0.3rem;
}

#narrative-close:hover {
  color: #4ecdc4;
}

#narrative-body {
  line-height: 1.8;
  color: #8ab4d4;
  font-size: 0.9rem;
}

#narrative-body p {
  margin-bottom: 0.8rem;
}

#narrative-body .french {
  color: #f4a261;
  font-style: italic;
}

#narrative-body .emphasis {
  color: #4ecdc4;
}

@keyframes panelSlideIn {
  from { opacity: 0; transform: translate(-50%, -48%); }
  to { opacity: 1; transform: translate(-50%, -50%); }
}

/* Room Title */
#room-title {
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  animation: titleFadeIn 1s ease;
}

#room-title-text {
  font-size: 2rem;
  letter-spacing: 0.5em;
  color: #4ecdc4;
  text-shadow: 0 0 20px rgba(78, 205, 196, 0.5);
}

#room-subtitle-text {
  font-size: 0.85rem;
  color: #6a8caf;
  letter-spacing: 0.3em;
  margin-top: 0.5rem;
}

@keyframes titleFadeIn {
  0% { opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { opacity: 0; }
}

/* Completion Banner */
#completion-banner {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  animation: bannerPulse 2s ease;
}

#completion-text {
  font-size: 1.5rem;
  letter-spacing: 0.4em;
  color: #2a9d8f;
  text-shadow: 0 0 30px rgba(42, 157, 143, 0.8);
}

@keyframes bannerPulse {
  0% { opacity: 0; transform: translateX(-50%) scale(0.9); }
  20% { opacity: 1; transform: translateX(-50%) scale(1.05); }
  30% { opacity: 1; transform: translateX(-50%) scale(1); }
  80% { opacity: 1; }
  100% { opacity: 0; }
}

/* Objective Hint */
#objective-hint {
  position: absolute;
  bottom: 5%;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}

#objective-text {
  font-size: 0.75rem;
  color: rgba(106, 140, 175, 0.6);
  letter-spacing: 0.15em;
}

/* Scrollbar styling for narrative panel */
#narrative-panel::-webkit-scrollbar {
  width: 4px;
}

#narrative-panel::-webkit-scrollbar-track {
  background: transparent;
}

#narrative-panel::-webkit-scrollbar-thumb {
  background: rgba(78, 205, 196, 0.3);
  border-radius: 2px;
}