:root {
  color-scheme: dark;
  --cyan: #00eaff;
  --blue: #182cff;
  --pink: #ff00e6;
  --orange: #ff603d;
  --ink: #02020a;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; background: #000; }
body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #fff;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}
button { font: inherit; }

#game-shell { position: relative; width: 100%; height: 100%; overflow: hidden; background: #000; isolation: isolate; }
#game-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: .22;
  background: repeating-linear-gradient(180deg, rgba(255,255,255,.025) 0 1px, transparent 1px 4px);
  mix-blend-mode: screen;
}
#game-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  box-shadow: inset 0 0 95px rgba(0,0,0,.72), inset 0 -36px 80px rgba(15,0,45,.18);
}
#game { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: crosshair; -webkit-tap-highlight-color: transparent; }
.hidden { display: none !important; }

#hud { position: absolute; inset: 0; pointer-events: none; z-index: 5; }
.hud-panel {
  position: absolute;
  top: clamp(14px, 2vw, 28px);
  min-width: 180px;
  padding: 15px 18px;
  border: 1px solid rgba(0, 234, 255, .65);
  background: linear-gradient(135deg, rgba(0, 10, 24, .82), rgba(3, 1, 20, .52));
  box-shadow: 0 0 20px rgba(0, 234, 255, .15), inset 0 0 20px rgba(0, 234, 255, .06);
  backdrop-filter: blur(8px);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}
.hud-left { left: clamp(14px, 2vw, 28px); }
.hud-right { right: clamp(14px, 2vw, 28px); width: min(300px, 34vw); }
.brand { color: var(--cyan); letter-spacing: .23em; font-weight: 900; font-size: 12px; margin-bottom: 10px; text-shadow: 0 0 12px var(--cyan); }
.stat-row, .meter-label { display: flex; align-items: center; justify-content: space-between; gap: 24px; font-size: 12px; letter-spacing: .12em; color: rgba(255,255,255,.72); margin-top: 7px; }
.stat-row strong, .meter-label strong { color: #fff; font-size: 15px; letter-spacing: .04em; }
.meter { height: 8px; margin-top: 6px; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.05); overflow: hidden; transform: skewX(-12deg); }
.meter i { display: block; width: 100%; height: 100%; background: linear-gradient(90deg, #ff334f, #ffbd3d); box-shadow: 0 0 14px #ff4f55; transition: width .18s ease; }
.meter.shield i { background: linear-gradient(90deg, #185bff, var(--cyan)); box-shadow: 0 0 14px var(--cyan); }
.shield-label { margin-top: 11px; }

#crosshair { position: absolute; left: 50%; top: 49%; width: 38px; height: 38px; transform: translate(-50%, -50%); filter: drop-shadow(0 0 7px var(--cyan)); }
#crosshair::before, #crosshair::after, #crosshair i::before, #crosshair i::after { content: ""; position: absolute; background: var(--cyan); }
#crosshair::before { width: 10px; height: 2px; left: 0; top: 18px; }
#crosshair::after { width: 10px; height: 2px; right: 0; top: 18px; }
#crosshair i::before { width: 2px; height: 10px; left: 18px; top: 0; }
#crosshair i::after { width: 2px; height: 10px; left: 18px; bottom: 0; }
#crosshair b { position: absolute; left: 16px; top: 16px; width: 6px; height: 6px; border: 1px solid var(--cyan); border-radius: 50%; }

#powerup { position: absolute; left: 50%; bottom: 46px; transform: translateX(-50%); padding: 9px 16px; color: #fff; border: 1px solid var(--pink); background: rgba(18,0,24,.72); box-shadow: 0 0 20px rgba(255,0,230,.35); letter-spacing: .16em; font-size: 12px; font-weight: 800; }
#pause-button { pointer-events: auto; position: absolute; right: clamp(14px, 2vw, 28px); bottom: clamp(14px, 2vw, 28px); width: 46px; height: 46px; border: 1px solid rgba(0,234,255,.75); background: rgba(0,10,22,.72); color: var(--cyan); font-weight: 900; box-shadow: 0 0 18px rgba(0,234,255,.22); cursor: pointer; }

.screen { position: absolute; inset: 0; z-index: 20; display: grid; place-items: center; padding: 22px; opacity: 0; visibility: hidden; pointer-events: none; background: radial-gradient(circle at center, rgba(0,22,42,.32), rgba(0,0,0,.82)); transition: opacity .22s ease, visibility .22s ease; }
.screen.active { opacity: 1; visibility: visible; pointer-events: auto; }
.screen.passthrough { background: transparent; }
.screen-card { width: min(660px, 96vw); padding: clamp(26px, 5vw, 58px); text-align: center; border: 1px solid rgba(0,234,255,.7); background: linear-gradient(145deg, rgba(0,10,26,.94), rgba(13,0,25,.92)); box-shadow: 0 0 48px rgba(0,234,255,.16), inset 0 0 50px rgba(255,0,230,.05); clip-path: polygon(0 20px, 20px 0, calc(100% - 28px) 0, 100% 28px, 100% calc(100% - 20px), calc(100% - 20px) 100%, 28px 100%, 0 calc(100% - 28px)); }
.screen-card.compact { width: min(470px, 94vw); }
.eyebrow { margin: 0 0 10px; color: var(--cyan); letter-spacing: .33em; font-size: 12px; font-weight: 900; text-shadow: 0 0 12px var(--cyan); }
h1 { margin: 0; font-size: clamp(58px, 11vw, 132px); line-height: .77; letter-spacing: -.06em; font-style: italic; text-shadow: 0 0 24px rgba(0,234,255,.28); }
h1 span { color: var(--pink); text-shadow: 0 0 28px rgba(255,0,230,.45); }
h2 { margin: 4px 0 24px; font-size: clamp(42px, 8vw, 76px); letter-spacing: -.04em; font-style: italic; }
.intro { max-width: 560px; margin: 28px auto 24px; color: rgba(255,255,255,.72); line-height: 1.7; }
.control-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 20px 0 26px; }
.control-grid > div { min-height: 86px; display: flex; flex-wrap: wrap; align-content: center; justify-content: center; gap: 5px; padding: 12px 8px; border: 1px solid rgba(255,255,255,.1); background: rgba(255,255,255,.025); }
.control-grid span { flex-basis: 100%; margin-top: 5px; font-size: 11px; letter-spacing: .12em; color: rgba(255,255,255,.55); }
kbd { min-width: 28px; padding: 4px 7px; border: 1px solid rgba(0,234,255,.6); border-bottom-width: 3px; background: rgba(0,234,255,.08); color: var(--cyan); font: 800 11px/1.2 inherit; }
.primary-button, .secondary-button { width: min(320px, 100%); min-height: 54px; margin: 6px auto; border: 0; font-weight: 950; letter-spacing: .14em; cursor: pointer; transition: transform .15s ease, filter .15s ease; }
.primary-button { color: #001018; background: var(--cyan); box-shadow: 0 0 26px rgba(0,234,255,.36); clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%); }
.secondary-button { color: #fff; border: 1px solid rgba(255,0,230,.8); background: rgba(255,0,230,.08); }
.primary-button:hover, .secondary-button:hover { transform: translateY(-2px); filter: brightness(1.13); }
.small-note { margin: 16px 0 0; color: rgba(255,255,255,.42); font-size: 11px; letter-spacing: .08em; }
.mobile-note { display: none; }
.final-score { margin: -8px 0 20px; color: rgba(255,255,255,.55); letter-spacing: .18em; }
.final-score strong { display: block; margin-top: 5px; color: var(--cyan); font-size: 34px; text-shadow: 0 0 16px var(--cyan); }
.mission-message { transform: scale(.9); opacity: 0; padding: 18px 28px; text-align: center; font-size: clamp(28px, 6vw, 68px); font-weight: 950; font-style: italic; letter-spacing: .04em; color: #fff; text-shadow: 0 0 18px var(--cyan), 0 0 36px var(--blue); transition: opacity .2s ease, transform .2s ease; }
#message-screen.active .mission-message { opacity: 1; transform: scale(1); }
.mission-message small { display: block; margin-top: 8px; color: var(--cyan); font-size: .22em; letter-spacing: .25em; font-style: normal; }

#damage-flash { position: absolute; inset: 0; z-index: 8; pointer-events: none; opacity: 0; background: radial-gradient(circle, transparent 35%, rgba(255,0,45,.7)); transition: opacity .12s ease; }
#damage-flash.active { opacity: 1; }

#mobile-controls {
  position: absolute;
  inset: auto 0 0;
  z-index: 10;
  display: none;
  justify-content: space-between;
  align-items: flex-end;
  gap: 12px;
  padding: 12px max(12px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  pointer-events: none;
}
.touch-pad {
  pointer-events: auto;
  width: min(44vw, 190px);
  display: grid;
  gap: 7px;
  touch-action: none;
}
.touch-pad button {
  min-width: 0;
  height: clamp(46px, 13vw, 60px);
  border: 1px solid rgba(0,234,255,.72);
  background: linear-gradient(145deg, rgba(0,13,32,.82), rgba(0,4,15,.72));
  color: var(--cyan);
  font-weight: 950;
  font-size: clamp(12px, 3.6vw, 16px);
  border-radius: 10px;
  box-shadow: inset 0 0 14px rgba(0,234,255,.08), 0 0 14px rgba(0,234,255,.12);
  backdrop-filter: blur(6px);
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}
.movement-pad { grid-template-columns: repeat(3, 1fr); grid-template-areas: ". up ." "left down right"; }
.movement-pad .forward { grid-area: up; }
.movement-pad .left { grid-area: left; }
.movement-pad .backward { grid-area: down; }
.movement-pad .right { grid-area: right; }
.action-pad { grid-template-columns: repeat(2, 1fr); }
.action-pad .boost {
  color: #071000;
  border-color: var(--cyan);
  background: rgba(0,234,255,.78);
  font-size: clamp(9px, 2.8vw, 12px);
}
.action-pad .fire {
  color: #180014;
  border-color: var(--pink);
  background: rgba(255,0,230,.86);
  box-shadow: inset 0 0 18px rgba(255,255,255,.12), 0 0 22px rgba(255,0,230,.35);
}
.touch-pad button.pressed { transform: scale(.94); filter: brightness(1.35); }

@media (max-width: 720px) {
  .screen { padding: 12px; }
  .screen-card { width: min(620px, 98vw); padding: clamp(20px, 5vw, 38px); }
  h1 { font-size: clamp(48px, 16vw, 90px); }
  .intro { margin: 18px auto 16px; font-size: 14px; line-height: 1.5; }
  .control-grid { grid-template-columns: repeat(2, 1fr); margin: 14px 0 18px; }
  .control-grid > div { min-height: 68px; padding: 8px 5px; }
  .hud-panel { top: max(8px, env(safe-area-inset-top)); min-width: 128px; padding: 8px 10px; backdrop-filter: blur(5px); }
  .hud-left { left: max(8px, env(safe-area-inset-left)); }
  .hud-right { right: max(8px, env(safe-area-inset-right)); width: min(44vw, 180px); }
  .brand { margin-bottom: 5px; font-size: 8px; }
  .stat-row, .meter-label { margin-top: 4px; font-size: 8px; gap: 8px; }
  .stat-row strong, .meter-label strong { font-size: 11px; }
  .meter { height: 6px; margin-top: 4px; }
  .shield-label { margin-top: 7px; }
  #pause-button { top: max(92px, calc(env(safe-area-inset-top) + 88px)); right: max(8px, env(safe-area-inset-right)); bottom: auto; width: 40px; height: 40px; }
}

@media (max-width: 430px) {
  .touch-pad { width: 45vw; gap: 5px; }
  .touch-pad button { height: 44px; border-radius: 8px; }
  #mobile-controls { gap: 7px; padding-left: 7px; padding-right: 7px; }
  .control-grid { gap: 5px; }
  .control-grid > div { min-height: 60px; }
  .screen-card { clip-path: polygon(0 14px, 14px 0, calc(100% - 18px) 0, 100% 18px, 100% calc(100% - 14px), calc(100% - 14px) 100%, 18px 100%, 0 calc(100% - 18px)); }
}

@media (max-height: 520px) and (orientation: landscape) {
  .screen { padding: 8px; }
  .screen-card { width: min(760px, 94vw); padding: 14px 24px; }
  h1 { font-size: clamp(44px, 12vh, 68px); line-height: .82; }
  h2 { margin-bottom: 12px; font-size: 42px; }
  .eyebrow { margin-bottom: 5px; font-size: 9px; }
  .intro { margin: 8px auto 9px; font-size: 12px; line-height: 1.35; }
  .control-grid { grid-template-columns: repeat(4, 1fr); margin: 8px 0 9px; }
  .control-grid > div { min-height: 45px; padding: 4px; }
  .control-grid span { margin-top: 2px; font-size: 8px; }
  kbd { min-width: 22px; padding: 2px 4px; font-size: 9px; }
  .primary-button, .secondary-button { min-height: 42px; margin: 3px auto; }
  .small-note { margin-top: 7px; font-size: 8px; }
  #mobile-controls { padding-top: 6px; padding-bottom: max(6px, env(safe-area-inset-bottom)); }
  .touch-pad { width: min(37vw, 190px); gap: 5px; }
  .touch-pad button { height: min(12vh, 48px); }
  .hud-panel { padding: 6px 8px; }
  #pause-button { top: 76px; }
}

@media (hover: none), (pointer: coarse) {
  #game { cursor: default; }
  #mobile-controls { display: flex; }
  #powerup { bottom: 126px; }
  #crosshair { top: 45%; transform: translate(-50%, -50%) scale(.82); opacity: .78; }
  .desktop-note { display: none; }
  .mobile-note { display: inline; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .001ms !important; }
}

#fullscreen-button {
  position: absolute;
  z-index: 30;
  top: max(12px, env(safe-area-inset-top));
  right: max(12px, env(safe-area-inset-right));
  width: 46px;
  height: 46px;
  border: 1px solid rgba(245,235,218,.8);
  border-radius: 12px;
  background: rgba(255,77,184,.88);
  color: #100625;
  font-size: 23px;
  font-weight: 950;
  box-shadow: 0 0 20px rgba(255,77,184,.35);
  cursor: pointer;
  pointer-events: auto;
}
#fullscreen-button:hover { filter: brightness(1.15); }
@media (max-width: 720px) {
  #fullscreen-button { width: 42px; height: 42px; font-size: 20px; }
}