:root {
  --bg: #050814;
  --text: #eff7ff;
  --muted: rgba(239, 247, 255, 0.72);
  --cyan: #44f7ff;
  --blue: #5577ff;
  --violet: #a855ff;
  --pink: #ff4fd8;
  --panel: rgba(8, 14, 32, 0.68);
  --border: rgba(120, 245, 255, 0.24);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
  background: radial-gradient(circle at 50% 35%, #101a40 0%, var(--bg) 62%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button {
  font: inherit;
}

#app {
  position: fixed;
  inset: 0;
  overflow: hidden;
  background: #030612;
}

#gameCanvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100vw;
  height: 100dvh;
  display: block;
  touch-action: none;
}

.vignette {
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(circle at center, transparent 38%, rgba(0, 0, 0, 0.42) 100%),
    linear-gradient(180deg, rgba(68, 247, 255, 0.08), transparent 28%, rgba(168, 85, 255, 0.08));
}

.scanlines {
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: 0.12;
  background-image: linear-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 100% 4px;
  mix-blend-mode: screen;
}

html[data-quality-tier="low"] .scanlines {
  opacity: 0.07;
  background-size: 100% 6px;
}

html[data-quality-tier="low"] .hero-card,
html[data-quality-tier="low"] .modal-card,
html[data-quality-tier="low"] .hud__panel,
html[data-quality-tier="low"] .fire-button,
html[data-quality-tier="low"] .control-button {
  backdrop-filter: blur(8px);
}

.screen {
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 5;
  display: grid;
  place-items: center;
  padding: 24px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  opacity: 0;
  transform: scale(1.02);
  transition: opacity 360ms ease, transform 360ms ease;
}

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

.damage-flash,
.collect-flash {
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 3;
  opacity: 0;
  transition: opacity 180ms ease;
}

.damage-flash {
  background: radial-gradient(circle at center, transparent 48%, rgba(255, 31, 112, 0.38) 100%);
}

.collect-flash {
  background: radial-gradient(circle at center, rgba(68, 247, 255, 0.18), transparent 55%);
}

.damage-flash.is-active,
.collect-flash.is-active {
  opacity: 1;
}

.hero-card,
.modal-card {
  width: min(680px, 100%);
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid var(--border);
  border-radius: 32px;
  background:
    linear-gradient(135deg, rgba(68, 247, 255, 0.11), transparent 28%),
    linear-gradient(225deg, rgba(255, 79, 216, 0.10), transparent 30%),
    var(--panel);
  box-shadow:
    0 30px 100px rgba(0, 0, 0, 0.62),
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 0 60px rgba(68, 247, 255, 0.10);
  backdrop-filter: blur(22px);
  text-align: center;
}

.eyebrow {
  color: var(--cyan);
  letter-spacing: 0.22em;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 10px 0 12px;
  letter-spacing: -0.06em;
  line-height: 0.95;
}

h1 {
  font-size: clamp(54px, 11vw, 118px);
  text-shadow:
    0 0 30px rgba(68, 247, 255, 0.32),
    0 0 70px rgba(168, 85, 255, 0.20);
}

h2 {
  font-size: clamp(42px, 8vw, 76px);
}

.lead,
.modal-card p {
  max-width: 560px;
  margin: 4px auto 0;
  color: var(--muted);
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.66;
}

.hero-card .lead {
  max-width: 520px;
  margin-top: 18px;
  line-height: 1.75;
  letter-spacing: 0.01em;
}

.ship-preview {
  position: relative;
  width: 148px;
  height: 148px;
  margin: 28px auto;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(68, 247, 255, 0.14), transparent 70%);
  animation: floatPreview 3.8s ease-in-out infinite;
}

.ship-preview::before {
  content: "";
  position: absolute;
  inset: 30px 48px;
  clip-path: polygon(50% 0%, 100% 86%, 50% 68%, 0% 86%);
  background: linear-gradient(180deg, #f4fbff, #46ecff 42%, #5b5dff);
  filter: drop-shadow(0 0 22px rgba(68, 247, 255, 0.85));
}

.ship-preview::after {
  content: "";
  position: absolute;
  left: 63px;
  top: 99px;
  width: 22px;
  height: 44px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(255, 79, 216, 0));
  filter: blur(3px);
}

.ship-preview__core {
  position: absolute;
  left: 67px;
  top: 58px;
  width: 14px;
  height: 14px;
  border-radius: 99px;
  background: #fff;
  box-shadow: 0 0 22px var(--cyan), 0 0 44px var(--pink);
}

.menu-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.primary-button,
.ghost-button {
  min-width: 170px;
  border: 0;
  border-radius: 999px;
  padding: 14px 22px;
  cursor: pointer;
  color: var(--text);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.primary-button {
  background: linear-gradient(135deg, var(--cyan), var(--blue), var(--pink));
  box-shadow: 0 0 26px rgba(68, 247, 255, 0.22), 0 16px 40px rgba(85, 119, 255, 0.20);
  font-weight: 800;
}

.ghost-button {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
}

.primary-button:hover,
.ghost-button:hover {
  transform: translateY(-2px);
}

.howto {
  display: grid;
  gap: 6px;
  max-height: 0;
  overflow: hidden;
  margin-top: 0;
  color: var(--muted);
  transition: max-height 280ms ease, margin-top 280ms ease;
}

.howto--open {
  max-height: 170px;
  margin-top: 22px;
}

.hud {
  pointer-events: none;
  position: absolute;
  z-index: 10;
  top: max(18px, env(safe-area-inset-top));
  left: max(18px, env(safe-area-inset-left));
  right: max(18px, env(safe-area-inset-right));
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 240ms ease, transform 240ms ease;
}

.hud--hidden {
  opacity: 0;
  transform: translateY(-12px);
}

.hud__panel {
  min-width: 120px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(6, 10, 24, 0.56);
  backdrop-filter: blur(14px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.10);
}

.hud__panel--flash {
  animation: hudFlash 260ms ease;
}

.hud__label {
  display: block;
  color: var(--cyan);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.energy-bar {
  width: 150px;
  height: 8px;
  margin-top: 6px;
  overflow: hidden;
  border-radius: 99px;
  background: rgba(255,255,255,0.10);
}

#energyFill {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--pink));
  box-shadow: 0 0 18px rgba(68, 247, 255, 0.55);
}

#energyFill.energy-low {
  animation: energyCritical 760ms ease-in-out infinite;
}

.results {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin: 22px 0 26px;
  color: var(--muted);
}

.results span {
  min-width: 132px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
}

.results strong {
  display: block;
  color: var(--cyan);
  font-size: 24px;
}

.fire-button {
  pointer-events: none;
  position: absolute;
  z-index: 11;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  display: none;
  opacity: 0;
  transform: scale(0.92);
  width: 76px;
  height: 76px;
  border: 1px solid rgba(68, 247, 255, 0.42);
  border-radius: 999px;
  background:
    radial-gradient(circle at 35% 30%, rgba(255,255,255,0.28), transparent 38%),
    rgba(8, 14, 32, 0.66);
  color: var(--text);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  box-shadow: 0 0 24px rgba(68, 247, 255, 0.22);
  backdrop-filter: blur(14px);
  transition: opacity 180ms ease, transform 180ms ease;
}

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

.mobile-controls {
  pointer-events: none;
  position: absolute;
  inset: auto max(18px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  z-index: 10;
  display: none;
  justify-content: space-between;
  align-items: flex-end;
  opacity: 0;
  transition: opacity 180ms ease;
}

.mobile-controls--active {
  pointer-events: auto;
  opacity: 1;
}

.mobile-controls__cluster {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.mobile-controls__cluster--right {
  padding-right: 90px;
}

.control-button {
  pointer-events: auto;
  width: 64px;
  height: 64px;
  border: 1px solid rgba(120, 245, 255, 0.34);
  border-radius: 999px;
  background: rgba(8, 14, 32, 0.58);
  color: var(--text);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  box-shadow: 0 0 22px rgba(68, 247, 255, 0.16);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.control-button--primary {
  width: 82px;
  height: 82px;
  border-color: rgba(68, 247, 255, 0.56);
  background:
    radial-gradient(circle at 35% 30%, rgba(255,255,255,0.22), transparent 38%),
    rgba(8, 14, 32, 0.68);
}

@keyframes floatPreview {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-10px) rotate(2deg); }
}

@keyframes hudFlash {
  0% { box-shadow: 0 0 0 rgba(68, 247, 255, 0); }
  45% { box-shadow: 0 0 28px rgba(68, 247, 255, 0.48); }
  100% { box-shadow: 0 0 0 rgba(68, 247, 255, 0); }
}

@keyframes energyCritical {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.8) saturate(1.5); }
}

@media (max-width: 640px) {
  .screen {
    align-items: center;
    padding: max(10px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom));
  }

  .hero-card,
  .modal-card {
    width: min(430px, 100%);
    border-radius: 22px;
    padding: 18px 16px;
  }

  .eyebrow {
    font-size: 10px;
    letter-spacing: 0.16em;
  }

  h1 {
    margin: 6px 0 11px;
    font-size: clamp(42px, 14vw, 64px);
  }

  h2 {
    margin: 6px 0 8px;
    font-size: clamp(36px, 12vw, 52px);
  }

  .lead,
  .modal-card p {
    max-width: 33ch;
    font-size: 14px;
    line-height: 1.52;
  }

  .hero-card .lead {
    max-width: 300px;
    margin-top: 14px;
    font-size: 13.8px;
    line-height: 1.65;
    letter-spacing: 0;
  }

  .ship-preview {
    width: 92px;
    height: 92px;
    margin: 12px auto 14px;
  }

  .ship-preview::before {
    inset: 19px 31px;
  }

  .ship-preview::after {
    left: 39px;
    top: 61px;
    width: 14px;
    height: 30px;
  }

  .ship-preview__core {
    left: 41px;
    top: 36px;
    width: 10px;
    height: 10px;
  }

  .menu-actions {
    gap: 10px;
  }

  .primary-button,
  .ghost-button {
    min-width: 136px;
    padding: 12px 16px;
    font-size: 14px;
  }

  .howto {
    gap: 4px;
    font-size: 13px;
  }

  .howto--open {
    max-height: 134px;
    margin-top: 14px;
  }

  .hide-small {
    display: none;
  }

  .hud {
    gap: 8px;
    right: auto;
    max-width: calc(100vw - 28px);
  }

  .hud__panel {
    min-width: 96px;
    padding: 9px 10px;
  }

  .energy-bar {
    width: 112px;
  }

  .fire-button {
    display: block;
  }
}

@media (min-width: 641px) and (max-width: 900px) {
  .hero-card,
  .modal-card {
    width: min(600px, 100%);
    padding: 34px 32px;
  }

  .ship-preview {
    width: 128px;
    height: 128px;
    margin: 22px auto;
  }
}

@media (pointer: coarse) {
  .mobile-controls {
    display: flex;
  }

  .fire-button {
    display: block;
  }
}

@media (max-height: 620px) {
  .hero-card,
  .modal-card {
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .howto--open {
    max-height: 150px;
  }
}