@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;700;800&family=Share+Tech+Mono&display=swap');

:root {
  --cyan: #23f7e8;
  --green: #39ff88;
  --red: #ff334f;
  --yellow: #ffe55c;
  --blue: #36a8ff;
  --purple: #cf57ff;
  --bg: #02080a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  color: #d9ffff;
  font-family: "Share Tech Mono", monospace;
}

body { display: grid; place-items: center; }

.game-shell {
  position: relative;
  width: min(100vw, 177.78vh);
  height: min(100vh, 56.25vw);
  max-width: 1920px;
  max-height: 1080px;
  overflow: hidden;
  background: #020608;
  box-shadow: 0 0 80px #000 inset;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: auto;
  cursor: none;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: linear-gradient(90deg, rgba(0, 7, 9, .82), rgba(0, 7, 9, .38), rgba(0, 7, 9, .74));
  backdrop-filter: blur(2px);
}

.hidden { display: none !important; }

.panel {
  width: min(520px, 90%);
  padding: 32px;
  border: 1px solid rgba(35,247,232,.5);
  background:
    linear-gradient(rgba(5, 17, 21, .96), rgba(1, 8, 11, .96));
  box-shadow:
    0 0 0 1px rgba(35,247,232,.08) inset,
    0 0 50px rgba(35,247,232,.12);
  position: relative;
}

.panel::before,
.panel::after {
  content: "";
  position: absolute;
  width: 35px;
  height: 8px;
  border-color: var(--cyan);
  border-style: solid;
}
.panel::before { top: -1px; left: -1px; border-width: 1px 0 0 1px; }
.panel::after { bottom: -1px; right: -1px; border-width: 0 1px 1px 0; }

.title-panel { min-height: 610px; }

.eyebrow {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 3px;
  margin: 0 0 18px;
}

h1, h2 {
  font-family: Orbitron, sans-serif;
  margin: 0;
  letter-spacing: 2px;
}
h1 { font-size: clamp(30px, 4vw, 48px); line-height: .98; }
h1 span { display: block; color: var(--green); text-shadow: 0 0 14px rgba(57,255,136,.4); }
h1 strong { display: block; color: var(--red); text-shadow: 0 0 16px rgba(255,51,79,.35); }
h2 { font-size: 32px; color: var(--red); }

.subtitle {
  color: #7ba6aa;
  letter-spacing: 4px;
  margin: 16px 0 28px;
}

.menu-buttons { display: grid; gap: 10px; }

button {
  width: 100%;
  padding: 13px 16px;
  background: rgba(5, 24, 29, .85);
  color: var(--cyan);
  border: 1px solid rgba(35,247,232,.45);
  font: 700 14px Orbitron, sans-serif;
  letter-spacing: 2px;
  cursor: pointer;
  transition: .15s ease;
}
button:hover {
  background: rgba(35,247,232,.12);
  box-shadow: 0 0 18px rgba(35,247,232,.16) inset;
}
button.primary {
  color: #00110d;
  background: var(--cyan);
  border-color: var(--cyan);
}
button.primary:hover { background: #76fff5; }

.stats {
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid rgba(35,247,232,.18);
  display: grid;
  gap: 9px;
}
.stats div, .result-grid div {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.stats span, .result-grid span {
  color: #648a8e;
  font-size: 12px;
  letter-spacing: 1px;
}
.stats b { color: var(--yellow); }
.status { margin: 26px 0 0; color: var(--green); font-size: 12px; }

.small-panel { text-align: center; max-width: 560px; }
.small-panel p { color: #a9c5c7; line-height: 1.6; }

.hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
  font-family: Orbitron, sans-serif;
  text-shadow: 0 0 8px rgba(0,0,0,.9);
}
.hud-left, .hud-right, .hud-center {
  position: absolute;
  top: 20px;
}
.hud-left { left: 24px; width: 280px; }
.hud-center {
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 50px;
  text-align: center;
}
.hud-center div { display: grid; gap: 4px; }
.hud-center span, .weapon span {
  color: #6c979b;
  font-size: 11px;
  letter-spacing: 2px;
}
.hud-center b { color: var(--cyan); font-size: 28px; }
.hud-right { right: 24px; text-align: right; }
.weapon b { display: block; color: var(--yellow); font-size: 18px; margin-top: 4px; }
.ammo { color: var(--cyan); font-size: 12px; margin-top: 5px; }

.hud-title {
  color: var(--green);
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 10px;
}
.bar-row {
  display: grid;
  grid-template-columns: 58px 1fr 38px;
  gap: 8px;
  align-items: center;
  font-size: 11px;
  margin: 6px 0;
}
.bar-row > span { color: #8eafb1; }
.bar-row b { color: #d8ffff; }
.bar {
  height: 9px;
  border: 1px solid rgba(255,255,255,.12);
  background: #12191b;
}
.bar i { display: block; width: 100%; height: 100%; background: var(--red); }
.bar.shield i { background: var(--blue); }

.milestone {
  position: absolute;
  left: 50%;
  top: 105px;
  transform: translateX(-50%);
  color: var(--yellow);
  font: 700 18px Orbitron, sans-serif;
  opacity: 0;
  transition: opacity .2s;
}
.milestone.show { opacity: 1; }

.crosshair {
  position: absolute;
  width: 22px;
  height: 22px;
  border: 2px solid rgba(35,247,232,.55);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  display: none;
}

kbd {
  display: inline-block;
  min-width: 30px;
  padding: 5px 7px;
  margin: 2px;
  border: 1px solid #3d676c;
  background: #07171a;
  color: var(--cyan);
  font: 12px "Share Tech Mono", monospace;
}
.help-grid { margin: 20px 0; }

.result-grid {
  display: grid;
  gap: 12px;
  padding: 18px 0;
  margin: 18px 0;
  border-top: 1px solid rgba(35,247,232,.15);
  border-bottom: 1px solid rgba(35,247,232,.15);
}
.result-grid b { color: var(--yellow); font-size: 20px; }

.score-list {
  list-style-position: inside;
  text-align: left;
  padding: 0;
  margin: 20px 0;
}
.score-list li {
  padding: 9px 12px;
  margin: 5px 0;
  border-left: 2px solid var(--cyan);
  background: rgba(35,247,232,.04);
  color: #c6dddd;
}
.score-list li strong { float: right; color: var(--yellow); }

@media (max-width: 800px) {
  .hud-left { left: 10px; width: 190px; }
  .hud-right { right: 10px; }
  .hud-center { gap: 15px; }
  .hud-center b { font-size: 20px; }
  .hud-title { display: none; }
  .panel { padding: 22px; }
}