:root {
  --bg:          #050510;
  --bg2:         #0a0a1e;
  --panel:       #0d0d2b;
  --neon-cyan:   #00f5ff;
  --neon-pink:   #ff00cc;
  --neon-yellow: #ffee00;
  --neon-green:  #00ff88;
  --neon-orange: #ff6600;
  --neon-purple: #cc00ff;
  --text:        #e0e8ff;
  --text-dim:    #5566aa;
  --border:      #1a1a4a;

  --glow-cyan:   0 0 6px #00f5ff, 0 0 20px #00f5ff44, 0 0 40px #00f5ff22;
  --glow-pink:   0 0 6px #ff00cc, 0 0 20px #ff00cc44, 0 0 40px #ff00cc22;
  --glow-yellow: 0 0 6px #ffee00, 0 0 20px #ffee0044;
  --glow-green:  0 0 6px #00ff88, 0 0 20px #00ff8844;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Share Tech Mono', monospace;
  min-height: 100vh;
  overflow: hidden;
  user-select: none;
}


#scanlines {
  position: fixed; inset: 0; z-index: 9999; pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px, transparent 3px,
    rgba(0,0,0,.18) 3px, rgba(0,0,0,.18) 4px
  );
  animation: scanMove 8s linear infinite;
}
@keyframes scanMove { 0%{background-position:0 0} 100%{background-position:0 400px} }

#crt-vignette {
  position: fixed; inset: 0; z-index: 9998; pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 60%, rgba(0,0,0,.8) 100%);
}


#app {
  position: relative;
  width: 100vw; height: 100vh;
  display: flex; align-items: center; justify-content: center;
}

.screen {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity .35s ease;
  flex-direction: column;
}
.screen.active { opacity: 1; pointer-events: all; }

.screen-inner {
  display: flex; flex-direction: column; align-items: center;
  gap: 2rem; padding: 2.5rem 3rem;
  background: rgba(10,10,30,.92);
  border: 1px solid var(--neon-cyan);
  box-shadow: var(--glow-cyan), inset 0 0 60px rgba(0,245,255,.04);
  max-width: 520px; width: 90%;
  position: relative;
}
.screen-inner::before, .screen-inner::after {
  content: ''; position: absolute;
  width: 12px; height: 12px;
  border: 2px solid var(--neon-cyan);
}
.screen-inner::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.screen-inner::after  { bottom: -1px; right: -1px; border-left: none; border-top: none; }


.logo-wrap { text-align: center; position: relative; padding: 1rem; }
.logo-glow-ring {
  position: absolute; inset: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,245,255,.08) 0%, transparent 70%);
  animation: pulse 2.5s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:.5;transform:scale(1)} 50%{opacity:1;transform:scale(1.05)} }

.game-logo {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: clamp(2.4rem, 8vw, 4.2rem);
  letter-spacing: .1em;
  color: var(--neon-cyan);
  text-shadow: var(--glow-cyan);
  line-height: 1;
}
.game-logo span { color: var(--neon-pink); text-shadow: var(--glow-pink); }
.logo-sub {
  font-family: 'Press Start 2P', monospace;
  font-size: .55rem;
  letter-spacing: .3em;
  color: var(--neon-yellow);
  text-shadow: var(--glow-yellow);
  margin-top: .5rem;
}


.menu-buttons { display: flex; flex-direction: column; gap: .9rem; width: 100%; }

.btn-arcade {
  font-family: 'Press Start 2P', monospace;
  font-size: .7rem;
  letter-spacing: .1em;
  padding: .9rem 2rem;
  border: 2px solid;
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: all .15s;
  text-align: center;
  width: 100%;
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}
.btn-primary-arc {
  color: var(--bg);
  background: var(--neon-cyan);
  border-color: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
}
.btn-primary-arc:hover { background: #fff; border-color: #fff; box-shadow: 0 0 30px #fff; }
.btn-secondary-arc {
  color: var(--neon-cyan);
  border-color: var(--neon-cyan);
}
.btn-secondary-arc:hover {
  background: rgba(0,245,255,.1);
  box-shadow: var(--glow-cyan);
}
.btn-arcade:active { transform: scale(.97); }

.ctrl-opt span small {
  display: block;
  font-family: 'Share Tech Mono', monospace;
  font-size: .5rem;
  color: var(--text-dim);
  letter-spacing: .03em;
  margin-top: .2rem;
  font-weight: normal;
}
.ctrl-opt input:checked + span small { color: rgba(0,245,255,.65); }

.version-tag {
  font-size: .55rem;
  color: var(--text-dim);
  letter-spacing: .15em;
}


.screen-title {
  font-family: 'Press Start 2P', monospace;
  font-size: clamp(.9rem, 3vw, 1.3rem);
  color: var(--neon-cyan);
  text-shadow: var(--glow-cyan);
  letter-spacing: .15em;
  text-align: center;
}
.red-title  { color: var(--neon-pink);   text-shadow: var(--glow-pink);   }
.gold-title { color: var(--neon-yellow); text-shadow: var(--glow-yellow); }


.settings-group { width: 100%; }
.settings-label {
  font-family: 'Press Start 2P', monospace;
  font-size: .6rem;
  color: var(--neon-yellow);
  letter-spacing: .1em;
  margin-bottom: .75rem;
}
.control-options, .diff-options {
  display: flex; flex-wrap: wrap; gap: .6rem;
}
.ctrl-opt {
  cursor: pointer;
  display: flex; align-items: center;
}
.ctrl-opt input[type=radio] { display: none; }
.ctrl-opt span {
  font-size: .6rem;
  padding: .5rem .9rem;
  border: 1px solid var(--text-dim);
  color: var(--text-dim);
  transition: all .15s;
  font-family: 'Press Start 2P', monospace;
  letter-spacing: .05em;
  line-height: 1.4;
}
.ctrl-opt input:checked + span {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
}
.ctrl-opt:hover span { border-color: var(--text); color: var(--text); }


.toggle-wrap { display: flex; align-items: center; gap: 1rem; cursor: pointer; }
.toggle-wrap input { display: none; }
.toggle-slider {
  width: 52px; height: 26px; border-radius: 13px;
  border: 2px solid var(--text-dim);
  position: relative; transition: all .2s;
}
.toggle-slider::after {
  content: ''; position: absolute;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--text-dim);
  top: 2px; left: 2px; transition: all .2s;
}
.toggle-wrap input:checked ~ .toggle-slider {
  border-color: var(--neon-green);
  box-shadow: var(--glow-green);
}
.toggle-wrap input:checked ~ .toggle-slider::after {
  background: var(--neon-green);
  transform: translateX(26px);
}
.toggle-label {
  font-family: 'Press Start 2P', monospace;
  font-size: .6rem;
  color: var(--text);
  letter-spacing: .05em;
}


.hiscore-list { width: 100%; }
.hiscore-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: .5rem .75rem;
  border-bottom: 1px solid var(--border);
  font-size: .65rem;
}
.hiscore-row:nth-child(1) .hs-score { color: var(--neon-yellow); text-shadow: var(--glow-yellow); }
.hiscore-row:nth-child(2) .hs-score { color: var(--text); }
.hiscore-row:nth-child(3) .hs-score { color: #c08050; }
.hs-rank { color: var(--text-dim); width: 2rem; }
.hs-score { color: var(--neon-cyan); font-family: 'Orbitron', sans-serif; }
.hiscore-empty { color: var(--text-dim); font-size: .65rem; text-align: center; padding: 1.5rem; }


#screen-game {
  flex-direction: column;
  gap: 0;
  background: var(--bg);
  align-items: center;
  justify-content: flex-start;
  padding-top: .5rem;
}
#screen-game.active { opacity: 1; pointer-events: all; }


.game-hud {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  width: 100%;
  max-width: 640px;
  padding: .4rem 1rem;
  z-index: 10;
}
.hud-block { min-width: 100px; }
.hud-center { text-align: center; }
.hud-right  { text-align: right; }
.hud-label {
  font-family: 'Press Start 2P', monospace;
  font-size: .45rem;
  color: var(--text-dim);
  letter-spacing: .15em;
  margin-bottom: .2rem;
}
.hud-value {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--neon-cyan);
  text-shadow: var(--glow-cyan);
}

.powerup-indicator {
  font-family: 'Press Start 2P', monospace;
  font-size: .5rem;
  color: var(--neon-green);
  text-shadow: var(--glow-green);
  text-align: center;
  letter-spacing: .1em;
  height: 1.2rem;
  animation: blinkPow 1s steps(1) infinite;
}
.powerup-indicator.hidden { opacity: 0; }
@keyframes blinkPow { 0%,100%{opacity:1} 50%{opacity:.3} }


#canvas-wrap {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

#gameCanvas {
  display: block;
  border: 1px solid rgba(0,245,255,.3);
  box-shadow: 0 0 20px rgba(0,245,255,.2), inset 0 0 60px rgba(0,0,0,.5);
}


.canvas-overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 1.2rem;
  background: rgba(5,5,20,.85);
  transition: opacity .3s;
}
.canvas-overlay.hidden { opacity: 0; pointer-events: none; }
.overlay-title {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: clamp(1.4rem, 5vw, 2.5rem);
  color: var(--neon-cyan);
  text-shadow: var(--glow-cyan);
  text-align: center;
}
.overlay-sub {
  font-family: 'Press Start 2P', monospace;
  font-size: .7rem;
  color: var(--neon-yellow);
  text-shadow: var(--glow-yellow);
  text-align: center;
  letter-spacing: .1em;
}


.screen-modal {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  background: rgba(5,5,20,.82);
  backdrop-filter: blur(4px);
}
.screen-modal.hidden { display: none; }
.modal-box {
  background: var(--panel);
  border: 1px solid var(--neon-pink);
  box-shadow: var(--glow-pink);
  padding: 2.5rem 3rem;
  display: flex; flex-direction: column; align-items: center; gap: 1.5rem;
  min-width: 280px;
  position: relative;
}
.modal-box::before, .modal-box::after {
  content: ''; position: absolute;
  width: 10px; height: 10px;
  border: 2px solid var(--neon-pink);
}
.modal-box::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.modal-box::after  { bottom: -1px; right: -1px; border-left: none; border-top: none; }


.final-score-wrap { text-align: center; }
.fs-label {
  font-family: 'Press Start 2P', monospace;
  font-size: .55rem;
  color: var(--text-dim);
  letter-spacing: .2em;
  margin-bottom: .5rem;
}
.fs-value {
  font-family: 'Orbitron', sans-serif;
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--neon-yellow);
  text-shadow: var(--glow-yellow);
  line-height: 1;
}
.fs-hi {
  font-family: 'Press Start 2P', monospace;
  font-size: .5rem;
  color: var(--neon-green);
  letter-spacing: .15em;
  margin-top: .4rem;
  min-height: 1em;
}


.victory-stars {
  font-size: 2.2rem;
  color: var(--neon-yellow);
  text-shadow: var(--glow-yellow);
  animation: starFloat 1.5s ease-in-out infinite alternate;
  letter-spacing: .5rem;
}
@keyframes starFloat { from{transform:translateY(0)} to{transform:translateY(-8px)} }


body::before {
  content: '';
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 60% 40% at 20% 80%, rgba(0,245,255,.04) 0%, transparent 60%),
    radial-gradient(ellipse 50% 35% at 80% 20%, rgba(255,0,204,.04) 0%, transparent 60%),
    var(--bg);
  animation: bgShift 12s ease-in-out infinite alternate;
}
@keyframes bgShift {
  0%   { filter: hue-rotate(0deg);  }
  100% { filter: hue-rotate(20deg); }
}


@media (max-width: 600px) {
  .screen-inner { padding: 1.5rem; gap: 1.2rem; }
  .game-logo { font-size: 2rem; }
  .hud-value { font-size: .85rem; }
  .game-hud { padding: .3rem .5rem; }
}