/* Orbital Strike - Marathon-inspired FPS */

:root {
  --bg: #050508;
  --text: #00ff88;
  --text-dim: #006644;
  --accent: #ff3366;
  --accent2: #3366ff;
  --hud-bg: rgba(0, 20, 10, 0.7);
}

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

body {
  font-family: 'Courier New', monospace;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  cursor: none;
}

.game-wrapper {
  position: relative;
  width: 100vw;
  height: 100vh;
}

.back-link {
  position: absolute;
  top: 10px;
  left: 10px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.8rem;
  z-index: 1000;
  cursor: pointer;
}

.back-link:hover { color: var(--text); }

#gameCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Overlays */
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(5, 5, 8, 0.95);
  z-index: 100;
}

.game-title {
  font-size: 4rem;
  font-weight: bold;
  letter-spacing: 0.5em;
  color: var(--text);
  text-shadow: 0 0 30px var(--text), 0 0 60px var(--text);
  animation: pulse 2s infinite;
}

.game-subtitle {
  font-size: 1.2rem;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  margin-top: 10px;
  margin-bottom: 40px;
}

.start-button {
  padding: 15px 50px;
  font-family: inherit;
  font-size: 1.2rem;
  letter-spacing: 0.2em;
  background: transparent;
  border: 2px solid var(--text);
  color: var(--text);
  cursor: pointer;
  transition: all 0.3s;
}

.start-button:hover {
  background: var(--text);
  color: var(--bg);
  box-shadow: 0 0 30px var(--text);
}

.controls-hint {
  margin-top: 40px;
  font-size: 0.9rem;
  color: var(--text-dim);
  text-align: center;
  line-height: 2;
}

kbd {
  display: inline-block;
  padding: 4px 8px;
  margin: 0 2px;
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid var(--text-dim);
  border-radius: 4px;
  font-family: inherit;
}

.game-over-title {
  font-size: 3rem;
  color: var(--accent);
  letter-spacing: 0.3em;
  text-shadow: 0 0 30px var(--accent);
  margin-bottom: 20px;
}

.final-score {
  font-size: 1.5rem;
  color: var(--text);
  margin-bottom: 40px;
  text-align: center;
  line-height: 2;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

/* HUD */
#hud {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 50;
}

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

.crosshair-dot {
  width: 4px;
  height: 4px;
  background: var(--text);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--text);
}

/* Wave Info */
.wave-info {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}

.wave-number {
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--text-dim);
}

.wave-value {
  font-size: 2rem;
  font-weight: bold;
  color: var(--text);
  text-shadow: 0 0 20px var(--text);
}

.enemies-remaining {
  font-size: 0.75rem;
  color: var(--accent);
  margin-top: 5px;
}

/* Radar */
.radar {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 120px;
  height: 120px;
  background: var(--hud-bg);
  border: 2px solid var(--text);
  border-radius: 50%;
  overflow: hidden;
}

.radar-sweep {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--text), transparent);
  transform-origin: left center;
  animation: sweep 2s linear infinite;
}

.radar-center {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px;
  height: 6px;
  background: var(--text);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.radar-blip {
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: blink 0.5s infinite;
}

@keyframes sweep {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Health Bar */
.health-bar {
  position: absolute;
  bottom: 30px;
  left: 30px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.health-icon { font-size: 1.5rem; }

.health-track {
  width: 200px;
  height: 20px;
  background: rgba(0, 0, 0, 0.5);
  border: 2px solid var(--text);
  overflow: hidden;
}

.health-fill {
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--text));
  transition: width 0.3s;
}

.health-text {
  font-size: 1.2rem;
  min-width: 40px;
}

/* Ammo Display */
.ammo-display {
  position: absolute;
  bottom: 30px;
  right: 30px;
  text-align: right;
}

.weapon-name {
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.2em;
}

.ammo-count {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--text);
  text-shadow: 0 0 20px var(--text);
}

.ammo-reserve {
  font-size: 1rem;
  color: var(--text-dim);
}

.weapon-icon {
  position: absolute;
  bottom: 100px;
  right: 30px;
  font-size: 3rem;
  opacity: 0.5;
}

/* Pickup Notification */
.pickup-notification {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1.2rem;
  color: var(--text);
  text-shadow: 0 0 20px var(--text);
  opacity: 0;
  transition: opacity 0.3s;
}

.pickup-notification.visible {
  opacity: 1;
}

/* Damage Flash */
.damage-flash {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--accent);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.1s;
}

.damage-flash.active {
  opacity: 0.3;
}

/* Scanlines */
.scanlines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.1) 2px,
    rgba(0, 0, 0, 0.1) 4px
  );
  pointer-events: none;
}

/* Vignette */
.vignette {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.5) 100%);
  pointer-events: none;
}

/* Terminal Overlay */
.terminal-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  max-width: 90%;
  background: rgba(0, 20, 10, 0.95);
  border: 2px solid var(--text);
  z-index: 200;
  pointer-events: auto;
}

.terminal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  border-bottom: 1px solid var(--text-dim);
}

.terminal-title {
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  color: var(--text);
}

.terminal-close {
  background: none;
  border: 1px solid var(--text-dim);
  color: var(--text-dim);
  padding: 5px 10px;
  font-family: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.terminal-close:hover {
  border-color: var(--text);
  color: var(--text);
}

.terminal-content {
  padding: 20px;
  max-height: 300px;
  overflow-y: auto;
}

.terminal-text {
  font-size: 0.9rem;
  line-height: 1.8;
  white-space: pre-wrap;
  color: var(--text);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--text-dim);
}

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