:root {
  --bg-color: #030008;
  --panel-bg: rgba(13, 8, 24, 0.7);
  --neon-cyan: #00f0ff;
  --neon-magenta: #ff007f;
  --neon-yellow: #ffea00;
  --neon-green: #39ff14;
  --neon-red: #ff3131;
  --border-glow: rgba(0, 240, 255, 0.4);
  --font-display: 'Orbitron', sans-serif;
  --font-mono: 'Share Tech Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

body {
  background-color: var(--bg-color);
  color: #ffffff;
  font-family: var(--font-display);
  overflow: hidden;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: radial-gradient(circle at center, #1b0a3a 0%, #030008 100%);
}

#game-container {
  position: relative;
  width: 480px;
  height: 800px;
  max-width: 100vw;
  max-height: 100vh;
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.15),
              inset 0 0 20px rgba(255, 0, 127, 0.1);
  border: 2px solid rgba(0, 240, 255, 0.2);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Layering Canvases */
canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

#bg-stars-canvas {
  z-index: 1;
}

#bg-city-canvas {
  z-index: 2;
}

#game-canvas {
  z-index: 3;
}

/* UI Overlay Layer */
.overlay-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(3, 0, 8, 0.4);
}

.menu-card {
  width: 85%;
  max-width: 400px;
  padding: 30px 24px;
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5),
              inset 0 0 15px rgba(0, 240, 255, 0.1);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform: scale(0.95);
  opacity: 0;
  pointer-events: none;
  position: absolute;
}

.menu-card.active {
  transform: scale(1);
  opacity: 1;
  pointer-events: auto;
}

.menu-card.hidden {
  display: none !important;
}

/* Typography & Title styling */
.glitch-title {
  font-size: 2.8rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: 2px;
  position: relative;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
  margin-bottom: -5px;
}

.glitch-title::before,
.glitch-title::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
}

.glitch-title::before {
  left: 2px;
  text-shadow: -2px 0 var(--neon-magenta);
  clip: rect(44px, 450px, 56px, 0);
  animation: glitch-anim 5s infinite linear alternate-reverse;
}

.glitch-title::after {
  left: -2px;
  text-shadow: -2px 0 var(--neon-cyan), 0 2px 3px rgba(0,0,0,0.5);
  clip: rect(85px, 450px, 140px, 0);
  animation: glitch-anim2 5s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
  0% { clip: rect(15px, 9999px, 66px, 0); }
  10% { clip: rect(34px, 9999px, 55px, 0); }
  20% { clip: rect(82px, 9999px, 12px, 0); }
  30% { clip: rect(43px, 9999px, 88px, 0); }
  40% { clip: rect(10px, 9999px, 23px, 0); }
  50% { clip: rect(67px, 9999px, 98px, 0); }
  60% { clip: rect(80px, 9999px, 11px, 0); }
  70% { clip: rect(12px, 9999px, 44px, 0); }
  80% { clip: rect(54px, 9999px, 85px, 0); }
  90% { clip: rect(93px, 9999px, 30px, 0); }
  100% { clip: rect(27px, 9999px, 73px, 0); }
}

@keyframes glitch-anim2 {
  0% { clip: rect(76px, 9999px, 116px, 0); }
  11% { clip: rect(42px, 9999px, 90px, 0); }
  22% { clip: rect(12px, 9999px, 50px, 0); }
  33% { clip: rect(88px, 9999px, 124px, 0); }
  44% { clip: rect(25px, 9999px, 67px, 0); }
  55% { clip: rect(90px, 9999px, 15px, 0); }
  66% { clip: rect(3px, 9999px, 41px, 0); }
  77% { clip: rect(52px, 9999px, 88px, 0); }
  88% { clip: rect(110px, 9999px, 132px, 0); }
  100% { clip: rect(60px, 9999px, 78px, 0); }
}

.subtitle {
  font-size: 0.75rem;
  color: var(--neon-magenta);
  font-family: var(--font-mono);
  letter-spacing: 3px;
  margin-bottom: 10px;
  text-shadow: 0 0 5px rgba(255, 0, 127, 0.3);
}

.menu-title {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--neon-cyan);
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}

.menu-title.critical {
  color: var(--neon-red);
  text-shadow: 0 0 10px rgba(255, 49, 49, 0.4);
  animation: pulse-red 2s infinite ease-in-out;
}

@keyframes pulse-red {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; text-shadow: 0 0 15px rgba(255, 49, 49, 0.7); }
}

/* Cyber Buttons */
.cyber-btn {
  background: transparent;
  border: 1px solid var(--neon-cyan);
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 12px 20px;
  cursor: pointer;
  position: relative;
  transition: all 0.2s ease;
  clip-path: polygon(8% 0%, 100% 0%, 100% 70%, 92% 100%, 0% 100%, 0% 30%);
  background: rgba(0, 240, 255, 0.05);
  box-shadow: inset 0 0 10px rgba(0, 240, 255, 0.1);
  outline: none;
}

.cyber-btn:hover {
  background: var(--neon-cyan);
  color: var(--bg-color);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.6);
  transform: translateY(-2px);
}

.cyber-btn:active {
  transform: translateY(1px);
}

.cyber-btn.secondary {
  border-color: var(--neon-magenta);
  background: rgba(255, 0, 127, 0.05);
  box-shadow: inset 0 0 10px rgba(255, 0, 127, 0.1);
}

.cyber-btn.secondary:hover {
  background: var(--neon-magenta);
  color: #fff;
  box-shadow: 0 0 15px rgba(255, 0, 127, 0.6);
}

.cyber-btn.primary-action {
  border-color: var(--neon-yellow);
  background: rgba(255, 234, 0, 0.08);
}

.cyber-btn.primary-action:hover {
  background: var(--neon-yellow);
  color: var(--bg-color);
  box-shadow: 0 0 15px rgba(255, 234, 0, 0.6);
}

/* Controls Guide */
.controls-guide {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #8c8896;
  margin-top: 10px;
  line-height: 1.6;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 12px;
}

/* Pause menu specifics */
.pause-divider {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
  margin: 5px 0;
}

/* Game over menu details */
.score-display-group {
  display: flex;
  justify-content: space-around;
  gap: 15px;
  margin: 5px 0;
}

.score-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 10px 15px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.score-box .label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #8c8896;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.score-box .val {
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
  font-family: var(--font-mono);
}

#high-score-form {
  background: rgba(0, 240, 255, 0.04);
  border: 1px dashed rgba(0, 240, 255, 0.3);
  border-radius: 10px;
  padding: 15px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.success-msg {
  font-size: 0.8rem;
  color: var(--neon-green);
  font-weight: 700;
  letter-spacing: 1px;
}

.input-group {
  display: flex;
  gap: 8px;
}

#player-name {
  flex: 1;
  background: rgba(3, 0, 8, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 1rem;
  padding: 10px 12px;
  border-radius: 6px;
  text-align: center;
  outline: none;
  letter-spacing: 1px;
  text-transform: uppercase;
}

#player-name:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

/* Leaderboard Menu */
.leaderboard-table-container {
  max-height: 250px;
  overflow-y: auto;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.2);
}

#leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-align: left;
}

#leaderboard-table th {
  background: rgba(13, 8, 24, 0.8);
  padding: 10px;
  color: var(--neon-cyan);
  font-weight: 700;
  border-bottom: 1px solid rgba(0, 240, 255, 0.2);
  position: sticky;
  top: 0;
}

#leaderboard-table td {
  padding: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: #dfdfdf;
}

#leaderboard-table tr:hover td {
  background: rgba(0, 240, 255, 0.04);
}

#leaderboard-table tr.top-row td {
  color: var(--neon-yellow);
  font-weight: 700;
}

#leaderboard-table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.01);
}

/* Custom Scrollbar for Leaderboard */
.leaderboard-table-container::-webkit-scrollbar {
  width: 6px;
}
.leaderboard-table-container::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
}
.leaderboard-table-container::-webkit-scrollbar-thumb {
  background: rgba(0, 240, 255, 0.2);
  border-radius: 3px;
}
.leaderboard-table-container::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 240, 255, 0.4);
}

/* Gameplay HUD */
.hud-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 8;
  pointer-events: none;
}

.hud-container.hidden {
  display: none !important;
}

.hud-score-box {
  background: rgba(13, 8, 24, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 8px;
  padding: 6px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hud-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--neon-cyan);
  letter-spacing: 1px;
}

.hud-value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
}

.hud-btn-group {
  pointer-events: auto;
}

#hud-pause-btn {
  background: rgba(13, 8, 24, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 0, 127, 0.2);
  color: var(--neon-magenta);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.2s ease;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

#hud-pause-btn:hover {
  background: var(--neon-magenta);
  color: #fff;
  border-color: var(--neon-magenta);
  box-shadow: 0 0 10px rgba(255, 0, 127, 0.5);
  transform: scale(1.05);
}