/* ============================================
   style.css — Typing Defender - Cyber Dark Theme
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --bg-primary: #0a0a1a;
  --bg-secondary: #12122a;
  --bg-card: rgba(20, 20, 50, 0.85);
  --bg-card-hover: rgba(30, 30, 60, 0.95);
  --text-primary: #e0e0f0;
  --text-secondary: #8888aa;
  --text-dim: #555577;
  --accent-cyan: #00ffc8;
  --accent-cyan-dim: rgba(0, 255, 200, 0.2);
  --accent-blue: #4488ff;
  --accent-purple: #aa55ff;
  --accent-gold: #ffd700;
  --accent-red: #ff3355;
  --accent-green: #00ff66;
  --glow-cyan: 0 0 20px rgba(0, 255, 200, 0.4);
  --glow-blue: 0 0 20px rgba(68, 136, 255, 0.4);
  --glow-purple: 0 0 20px rgba(170, 85, 255, 0.4);
  --glow-gold: 0 0 20px rgba(255, 215, 0, 0.4);
  --glow-red: 0 0 15px rgba(255, 51, 85, 0.4);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
  --font-mono: 'Courier New', 'Fira Code', monospace;
  --font-display: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-display);
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* ---------- Screen Container ---------- */
.screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  z-index: 10;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, #1a0a2e 100%);
}

.screen.active {
  display: flex;
}

#gameplay-screen {
  background: transparent;
  pointer-events: none;
  z-index: 5;
}

#canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1;
}

canvas {
  display: block;
}

/* ---------- Loading Screen ---------- */
#loading-screen {
  gap: 24px;
}

.loading-title {
  font-size: 2.2rem;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  text-shadow: var(--glow-cyan);
  letter-spacing: 4px;
}

.loading-bar {
  width: 300px;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
}

.loading-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
  border-radius: 3px;
  transition: width 0.2s ease;
  box-shadow: var(--glow-cyan);
}

.loading-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  letter-spacing: 2px;
  font-family: var(--font-mono);
}

/* ---------- Home Screen ---------- */
#home-screen {
  gap: 28px;
}

.home-title {
  font-size: 3.5rem;
  font-family: var(--font-mono);
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  letter-spacing: 2px;
  animation: titlePulse 3s ease-in-out infinite;
}

@keyframes titlePulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.3); }
}

.home-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-top: -16px;
}

.home-highscore {
  font-size: 1rem;
  color: var(--accent-gold);
  font-family: var(--font-mono);
  margin-top: 8px;
}

.home-highscore span {
  font-size: 1.4rem;
  font-weight: 700;
}

.btn-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}

/* ---------- Buttons ---------- */
.btn {
  padding: 14px 48px;
  font-size: 1.1rem;
  font-family: var(--font-mono);
  font-weight: 600;
  border: 2px solid var(--accent-cyan);
  background: transparent;
  color: var(--accent-cyan);
  border-radius: var(--radius);
  cursor: pointer;
  letter-spacing: 2px;
  transition: all var(--transition);
  min-width: 260px;
  text-align: center;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 255, 200, 0.15), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  background: var(--accent-cyan-dim);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: rgba(0, 255, 200, 0.15);
  box-shadow: var(--glow-cyan);
}

.btn-secondary {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.btn-secondary:hover {
  background: rgba(68, 136, 255, 0.15);
  box-shadow: var(--glow-blue);
}

.btn-danger {
  border-color: var(--accent-red);
  color: var(--accent-red);
  font-size: 0.85rem;
  padding: 10px 32px;
  min-width: auto;
}

.btn-danger:hover {
  background: rgba(255, 51, 85, 0.15);
  box-shadow: var(--glow-red);
}

/* ---------- Instructions Screen ---------- */
.instructions-panel {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 36px 48px;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  backdrop-filter: blur(10px);
}

.instructions-panel h2 {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  text-shadow: var(--glow-cyan);
  margin-bottom: 20px;
  font-size: 1.6rem;
  text-align: center;
}

.instructions-panel h3 {
  color: var(--accent-blue);
  margin-top: 18px;
  margin-bottom: 8px;
  font-size: 1rem;
}

.instructions-panel p,
.instructions-panel li {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

.instructions-panel ul {
  list-style: none;
  padding-left: 0;
}

.instructions-panel li::before {
  content: '>';
  color: var(--accent-cyan);
  margin-right: 8px;
  font-family: var(--font-mono);
}

.instructions-panel .btn {
  margin-top: 24px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Scrollbar ---------- */
.instructions-panel::-webkit-scrollbar {
  width: 6px;
}
.instructions-panel::-webkit-scrollbar-track {
  background: transparent;
}
.instructions-panel::-webkit-scrollbar-thumb {
  background: rgba(0, 255, 200, 0.3);
  border-radius: 3px;
}

/* ---------- HUD ---------- */
#hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: none;
  justify-content: space-between;
  align-items: center;
  padding: 10px 24px;
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0, 255, 200, 0.15);
  z-index: 20;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  flex-wrap: wrap;
  gap: 8px;
}

.hud-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hud-label {
  color: var(--text-dim);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hud-value {
  color: var(--text-primary);
  font-weight: 700;
}

#hud-lives {
  font-size: 1.1rem;
  letter-spacing: 2px;
}

#hud-combo {
  display: none;
  color: var(--accent-gold);
  font-weight: 700;
  font-size: 0.95rem;
  text-shadow: var(--glow-gold);
  animation: comboPulse 0.6s ease-in-out infinite;
}

@keyframes comboPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

/* ---------- Mute Button ---------- */
#btn-mute {
  position: fixed;
  bottom: 16px;
  right: 16px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(20, 20, 50, 0.7);
  color: var(--text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 30;
  transition: all var(--transition);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  padding: 0;
}

#btn-mute:hover {
  background: rgba(40, 40, 80, 0.9);
  border-color: var(--accent-cyan);
}

/* ---------- Power-Up Indicator ---------- */
#powerup-indicator {
  position: fixed;
  bottom: 70px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(20, 20, 50, 0.9);
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  z-index: 25;
  display: none;
  box-shadow: var(--glow-gold);
  pointer-events: none;
  animation: indicatorPulse 1.5s ease-in-out infinite;
}

@keyframes indicatorPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ---------- Pause Screen ---------- */
#pause-screen {
  background: rgba(10, 10, 26, 0.92);
  backdrop-filter: blur(10px);
  gap: 24px;
}

.pause-title {
  font-size: 2.5rem;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  text-shadow: var(--glow-cyan);
  letter-spacing: 6px;
}

/* ---------- Game Over Screen ---------- */
#gameover-screen {
  gap: 20px;
}

.gameover-title {
  font-size: 2.8rem;
  font-family: var(--font-mono);
  color: var(--accent-red);
  text-shadow: var(--glow-red);
  letter-spacing: 4px;
}

#go-new-highscore {
  display: none;
  font-size: 1.2rem;
  color: var(--accent-gold);
  font-family: var(--font-mono);
  text-shadow: var(--glow-gold);
  animation: comboPulse 0.8s ease-in-out infinite;
}

.gameover-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 400px;
  width: 90%;
}

.go-stat {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
}

.go-stat-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.go-stat-value {
  font-size: 1.5rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-cyan);
}

.go-stat:first-child .go-stat-value {
  color: var(--accent-gold);
  font-size: 2rem;
}

.gameover-buttons {
  display: flex;
  gap: 14px;
  margin-top: 8px;
}

/* ---------- Statistics Screen ---------- */
.stats-panel {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 36px 48px;
  max-width: 500px;
  width: 90%;
  backdrop-filter: blur(10px);
}

.stats-panel h2 {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  text-shadow: var(--glow-cyan);
  margin-bottom: 24px;
  font-size: 1.6rem;
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: rgba(30, 30, 60, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  transition: all var(--transition);
}

.stat-card:hover {
  border-color: var(--accent-cyan);
  background: rgba(30, 30, 60, 0.9);
}

.stat-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.stat-value {
  font-size: 1.4rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-cyan);
}

.stats-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ---------- Animated Background Orbs ---------- */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
  animation: orbFloat 20s ease-in-out infinite;
}

.bg-orb-1 {
  width: 400px;
  height: 400px;
  background: var(--accent-cyan);
  top: -100px;
  left: -100px;
  animation-delay: 0s;
}

.bg-orb-2 {
  width: 300px;
  height: 300px;
  background: var(--accent-purple);
  bottom: -80px;
  right: -80px;
  animation-delay: -7s;
}

.bg-orb-3 {
  width: 250px;
  height: 250px;
  background: var(--accent-blue);
  top: 40%;
  right: 20%;
  animation-delay: -14s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .home-title {
    font-size: 2.2rem;
  }

  .home-subtitle {
    font-size: 0.8rem;
    letter-spacing: 3px;
  }

  .btn {
    padding: 12px 36px;
    font-size: 0.95rem;
    min-width: 220px;
  }

  .instructions-panel,
  .stats-panel {
    padding: 24px;
  }

  #hud {
    font-size: 0.76rem;
    padding: 8px 12px;
  }

  .gameover-stats {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .go-stat {
    padding: 12px;
  }

  .gameover-buttons {
    flex-direction: column;
    align-items: center;
  }

  .pause-title {
    font-size: 2rem;
  }

  .gameover-title {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .home-title {
    font-size: 1.6rem;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .gameover-stats {
    grid-template-columns: 1fr;
  }
}