ui.css

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

/* Screens */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: 'Orbitron', sans-serif;
  pointer-events: auto;
}

.start-screen {
  background: radial-gradient(ellipse at center, rgba(0,0,16,0.7) 0%, rgba(0,0,16,0.95) 100%);
}

.title {
  text-align: center;
  margin-bottom: 1rem;
}

.title-line {
  display: block;
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-shadow: 0 0 20px #00aaff, 0 0 40px #0066ff, 0 0 80px #0033aa;
  color: #aaddff;
}

.subtitle-line {
  display: block;
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-shadow: 0 0 20px #ff4400, 0 0 40px #ff2200, 0 0 80px #aa0000;
  color: #ffaa88;
  margin-top: 0.5rem;
}

.tagline {
  font-size: 1.2rem;
  letter-spacing: 0.5em;
  color: #88ccff;
  margin-bottom: 2rem;
  text-shadow: 0 0 10px #0088ff;
}

.instructions {
  text-align: center;
  font-family: 'Space Mono', monospace;
  font-size: 0.85rem;
  line-height: 2;
  color: #88aacc;
  margin-bottom: 2rem;
}

.case-warning {
  color: #ffcc44;
  font-weight: 700;
}

.key-example {
  display: inline-block;
  padding: 0.1em 0.5em;
  border: 1px solid;
  border-radius: 4px;
  font-size: 1.1em;
  margin: 0 0.2em;
}

.key-example.lower {
  border-color: #00ff88;
  color: #00ff88;
  text-shadow: 0 0 8px #00ff88;
}

.key-example.upper {
  border-color: #ff4444;
  color: #ff4444;
  text-shadow: 0 0 8px #ff4444;
}

.prompt {
  font-size: 1.1rem;
  letter-spacing: 0.3em;
  color: #ffffff;
  text-shadow: 0 0 15px #ffffff;
}

.pulse {
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* Game Over */
.gameover-screen {
  background: radial-gradient(ellipse at center, rgba(30,0,0,0.8) 0%, rgba(0,0,0,0.95) 100%);
}

.gameover-title {
  font-size: 4rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-shadow: 0 0 30px #ff0000, 0 0 60px #ff0000;
  color: #ff4444;
  margin-bottom: 2rem;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem 3rem;
  margin-bottom: 3rem;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-label {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: #668899;
  margin-bottom: 0.3rem;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: #aaddff;
  text-shadow: 0 0 10px #0088ff;
}

/* HUD */
.hud-top-right {
  position: absolute;
  top: 2rem;
  right: 2rem;
  text-align: right;
  font-family: 'Orbitron', sans-serif;
}

.score {
  font-size: 2.5rem;
  font-weight: 700;
  color: #aaddff;
  text-shadow: 0 0 15px #0088ff, 0 0 30px #0044aa;
  letter-spacing: 0.05em;
}

.combo {
  font-size: 1rem;
  color: #ffcc00;
  text-shadow: 0 0 10px #ffaa00;
  letter-spacing: 0.15em;
  margin-top: 0.3rem;
  animation: comboFlash 0.2s ease-out;
}

@keyframes comboFlash {
  0% { transform: scale(1.5); opacity: 0.5; }
  100% { transform: scale(1); opacity: 1; }
}

.hud-top-left {
  position: absolute;
  top: 2rem;
  left: 2rem;
  font-family: 'Orbitron', sans-serif;
}

.lives-label {
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: #668899;
  margin-bottom: 0.5rem;
}

.lives-container {
  display: flex;
  gap: 0.5rem;
}

.shield-icon {
  width: 20px;
  height: 24px;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  transition: all 0.3s ease;
}

.shield-icon.active {
  background: linear-gradient(180deg, #00ccff, #0066aa);
  box-shadow: 0 0 10px #00aaff;
}

.shield-icon.depleted {
  background: #1a2a3a;
  opacity: 0.3;
}

.shield-icon.warning {
  animation: shieldWarning 0.8s ease-in-out infinite;
}

@keyframes shieldWarning {
  0%, 100% { background: linear-gradient(180deg, #00ccff, #0066aa); }
  50% { background: linear-gradient(180deg, #ff4444, #aa0000); }
}

/* Crosshair */
.crosshair {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border: 2px solid rgba(0, 170, 255, 0.3);
  border-radius: 50%;
}

.crosshair::before,
.crosshair::after {
  content: '';
  position: absolute;
  background: rgba(0, 170, 255, 0.4);
}

.crosshair::before {
  width: 1px;
  height: 100%;
  left: 50%;
  top: 0;
}

.crosshair::after {
  width: 100%;
  height: 1px;
  top: 50%;
  left: 0;
}