/* Retro Nort — neon grid, light cycles */

:root {
  --nort-bg: #0a0a12;
  --nort-grid: #0d1520;
  --neon-cyan: #00f5ff;
  --neon-blue: #0088ff;
  --neon-orange: #ff6600;
  --neon-yellow: #ffff00;
  --neon-green: #39ff14;
  --grid-line: rgba(0, 245, 255, 0.15);
  --grid-glow: rgba(0, 245, 255, 0.08);
  --text-dim: #4a6a8a;
  --white: #e8f4f8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "VT323", monospace;
  color: var(--white);
  background: var(--nort-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  position: relative;
  overflow-x: hidden;
}

/* Subtle grid background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

.crt-scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.12) 2px,
    rgba(0, 0, 0, 0.12) 4px
  );
  opacity: 0.5;
}

.game-frame {
  position: relative;
  z-index: 1;
  max-width: 640px;
  width: 100%;
  border: 4px solid var(--neon-cyan);
  box-shadow:
    0 0 30px rgba(0, 245, 255, 0.25),
    0 0 60px rgba(0, 136, 255, 0.1),
    inset 0 0 80px rgba(0, 0, 0, 0.6);
  background: var(--nort-grid);
  padding: 1rem;
}

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

.back-link {
  display: inline-block;
  font-family: "Orbitron", sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--neon-cyan);
  text-decoration: none;
  margin-bottom: 0.5rem;
  text-shadow: 0 0 10px var(--neon-cyan);
  transition: color 0.2s, text-shadow 0.2s;
}

.back-link:hover {
  color: var(--neon-green);
  text-shadow: 0 0 15px var(--neon-green);
}

.tron-title {
  font-family: "Orbitron", sans-serif;
  font-weight: 900;
  font-size: 2rem;
  margin: 0;
  letter-spacing: 0.35em;
  color: var(--neon-cyan);
  text-shadow:
    0 0 10px var(--neon-cyan),
    0 0 25px var(--neon-cyan),
    0 0 40px var(--neon-blue);
}

.tron-subtitle {
  font-family: "VT323", monospace;
  font-size: 1.25rem;
  letter-spacing: 0.4em;
  color: var(--text-dim);
  margin: 0.25rem 0 0.75rem;
  text-shadow: 0 0 8px var(--neon-cyan);
}

.hud {
  display: flex;
  justify-content: center;
  gap: 2rem;
  font-family: "Orbitron", sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.hud span {
  text-shadow: 0 0 6px var(--neon-cyan);
}

#score,
#lives {
  color: var(--neon-cyan);
  font-weight: 700;
}

/* Arena row: game + high score */
.arena-row {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 1rem;
  margin: 0 auto 1rem;
  flex-wrap: wrap;
}

/* Arena container */
.arena-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.high-score-panel {
  min-width: 100px;
  padding: 1rem 1.25rem;
  border: 3px solid var(--neon-orange);
  background: rgba(0, 0, 0, 0.5);
  box-shadow: 0 0 20px rgba(255, 102, 0, 0.3);
  text-align: center;
}

.high-score-label {
  font-family: "Orbitron", sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  margin: 0 0 0.25rem;
}

.high-score-initials {
  font-family: "Orbitron", sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.3em;
  color: var(--neon-yellow);
  text-shadow: 0 0 8px var(--neon-yellow);
  margin: 0 0 0.25rem;
}

.high-score-value {
  font-family: "Orbitron", sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--neon-orange);
  text-shadow: 0 0 12px var(--neon-orange);
  margin: 0;
}

.arena-glow {
  position: absolute;
  width: 100%;
  max-width: 608px;
  height: 496px;
  border: 2px solid rgba(0, 245, 255, 0.2);
  box-shadow:
    0 0 40px rgba(0, 245, 255, 0.15),
    inset 0 0 60px rgba(0, 0, 0, 0.5);
  pointer-events: none;
}

#game-canvas {
  display: block;
  background: #050810;
  border: 2px solid var(--neon-cyan);
  box-shadow:
    0 0 20px rgba(0, 245, 255, 0.2),
    inset 0 0 40px rgba(0, 0, 0, 0.8);
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  max-width: 100%;
  height: auto;
}

/* Overlay screens */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(5, 8, 16, 0.92);
  border: 2px solid var(--neon-cyan);
  margin: 0 auto;
  max-width: 604px;
  gap: 0.5rem;
}

.overlay.hidden,
#restart-btn.hidden {
  display: none;
}

.overlay-title {
  font-family: "Orbitron", sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 0.3em;
  color: var(--neon-cyan);
  text-shadow: 0 0 20px var(--neon-cyan);
  margin: 0 0 0.5rem;
}

.overlay-title.game-over-text {
  color: var(--neon-orange);
  text-shadow: 0 0 20px var(--neon-orange);
}

.overlay-instructions {
  font-size: 1.1rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  margin: 0;
}

.overlay-score {
  font-family: "Orbitron", sans-serif;
  font-size: 1rem;
  color: var(--neon-cyan);
  margin: 0 0 0.5rem;
}

.start-btn {
  margin-top: 1rem;
  padding: 0.6rem 1.25rem;
  font-family: "Orbitron", sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--neon-cyan);
  background: transparent;
  border: 3px solid var(--neon-cyan);
  cursor: pointer;
  box-shadow: 0 0 15px rgba(0, 245, 255, 0.4);
  transition: color 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.start-btn:hover {
  color: var(--neon-green);
  border-color: var(--neon-green);
  box-shadow: 0 0 25px rgba(57, 255, 20, 0.5);
}

/* Arcade initials input */
.initials-prompt {
  margin-top: 0.5rem;
  text-align: center;
}

.initials-prompt.hidden {
  display: none;
}

.initials-label {
  font-family: "Orbitron", sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--neon-yellow);
  text-shadow: 0 0 10px var(--neon-yellow);
  margin: 0 0 0.75rem;
}

.initials-inputs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.initials-inputs input {
  width: 2.5rem;
  height: 2.5rem;
  font-family: "Orbitron", sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  text-align: center;
  text-transform: uppercase;
  color: var(--neon-cyan);
  background: rgba(0, 0, 0, 0.6);
  border: 3px solid var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 245, 255, 0.3);
}

.initials-inputs input:focus {
  outline: none;
  border-color: var(--neon-yellow);
  box-shadow: 0 0 20px var(--neon-yellow);
}

.initials-inputs input::placeholder {
  color: var(--text-dim);
}

.nort-footer {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-dim);
  letter-spacing: 0.2em;
  margin: 0;
}

.nort-footer p {
  margin: 0;
}

@media (max-width: 700px) {
  .arena-row {
    flex-direction: column;
    align-items: center;
  }

  .high-score-panel {
    width: 100%;
    max-width: 300px;
  }
}

@media (max-width: 640px) {
  .nort-title {
    font-size: 1.5rem;
    letter-spacing: 0.2em;
  }

  .nort-subtitle {
    letter-spacing: 0.2em;
  }

  #game-canvas {
    width: 100%;
    height: auto;
  }

  .arena-glow {
    width: 100%;
    height: 100%;
  }
}