:root {
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  overflow: hidden;
  background: radial-gradient(
    ellipse at 50% 100%,
    #14284d 0%,
    #070d1e 48%,
    #02030a 100%
  );
  color: #fff;
  font:
    600 14px/1.2 system-ui,
    sans-serif;
}
#game {
  position: fixed;
  z-index: 2;
  display: block;
  width: 100vw;
  height: 100svh;
  cursor: crosshair;
  background: transparent;
}
.hud {
  position: fixed;
  z-index: 3;
  inset: 18px 18px auto;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  pointer-events: none;
  text-shadow: 0 2px 8px #000;
}
.hud strong {
  display: block;
  color: #ffdc80;
  font-size: clamp(1rem, 3vw, 1.4rem);
  letter-spacing: 0.08em;
}
.hud span {
  color: #a9c9ff;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.supernova {
  position: fixed;
  z-index: 4;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  border: 1px solid #ffdc83aa;
  border-radius: 999px;
  padding: 10px 16px;
  background: #f43f5e33;
  color: #fff1c5;
  box-shadow: 0 0 22px #f43f5e55;
  cursor: pointer;
  font: 800 12px system-ui;
  letter-spacing: 0.08em;
}
.supernova:disabled {
  opacity: 0.36;
  cursor: not-allowed;
}
.panel {
  position: fixed;
  z-index: 4;
  left: 50%;
  top: 50%;
  width: min(560px, calc(100vw - 40px));
  transform: translate(-50%, -50%);
  padding: 28px;
  border: 1px solid #668fcf66;
  border-radius: 20px;
  background: #071023d9;
  box-shadow: 0 28px 90px #0009;
  text-align: center;
  backdrop-filter: blur(10px);
}
.game-logo {
  display: block;
  width: min(100%, 520px);
  margin: 0 auto 18px;
}
.panel h1 {
  margin: 0 0 10px;
  color: #ffda80;
  font:
    700 clamp(2rem, 9vw, 4rem) / 0.9 Georgia,
    serif;
}
.panel p {
  margin: 0 0 20px;
  color: #c9dcff;
  line-height: 1.55;
}
.start-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}
.panel button,
.settings-toggle {
  border: 1px solid #ffdb8277;
  border-radius: 999px;
  padding: 13px 22px;
  background: #ffcf7033;
  color: #fff5dc;
  cursor: pointer;
  font: 700 15px system-ui;
}
.panel button:hover,
.settings-toggle:hover {
  background: #ffcf7066;
}
.panel.round-next {
  width: min(520px, calc(100vw - 32px));
  padding: 14px;
  border-radius: 16px;
  background: #071023e8;
}
.panel.round-next .game-logo,
.panel.round-next h1,
.panel.round-next p,
.panel.round-next #start-muted {
  display: none;
}
.panel.round-next .start-actions {
  display: block;
  margin-top: 10px;
}
.upgrades {
  display: none;
  gap: 7px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  text-align: left;
}
.panel.round-next .upgrades {
  display: grid;
}
.upgrades button {
  padding: 10px !important;
  border-radius: 9px !important;
  background: #123050 !important;
  font-size: 12px !important;
}
.upgrades button.selected {
  border-color: #ffe082 !important;
  background: #70551c !important;
}
.panel.round-next #start-music:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.panel[hidden] {
  display: none;
}
.hint {
  position: fixed;
  z-index: 3;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  color: #a7c8ff99;
  font-size: 12px;
  white-space: nowrap;
  pointer-events: none;
}
.settings-toggle {
  position: fixed;
  z-index: 5;
  right: 18px;
  bottom: 14px;
  padding: 9px 13px;
  background: #0b1630cc;
  font-size: 12px;
}
.settings {
  position: fixed;
  z-index: 5;
  right: 18px;
  bottom: 56px;
  width: 220px;
  padding: 14px;
  border: 1px solid #739ee377;
  border-radius: 13px;
  background: #071023e8;
  box-shadow: 0 14px 40px #0008;
  backdrop-filter: blur(10px);
}
.settings[hidden] {
  display: none;
}
.settings label {
  display: grid;
  gap: 5px;
  margin: 0 0 12px;
  color: #b9d5ff;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.settings label:last-child {
  margin: 0;
}
.settings select,
.settings button {
  width: 100%;
  border: 1px solid #5d88c077;
  border-radius: 8px;
  padding: 8px;
  background: #122440;
  color: #e8f3ff;
  font: 600 13px system-ui;
}
.settings button {
  cursor: pointer;
}
.settings button[aria-pressed="true"] {
  background: #1e795f;
  color: #e9fff7;
}
@media (prefers-reduced-motion: reduce) {
  .settings {
    backdrop-filter: none;
  }
}
body {
  background: #170305 url("../../assets/starlight-intercept-mars.png") center /
    cover no-repeat;
}
.dust-wind {
  position: fixed;
  inset: -20%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.28;
  background: repeating-linear-gradient(
    165deg,
    transparent 0 28px,
    rgba(255, 95, 50, 0.16) 34px 42px,
    transparent 52px 92px
  );
  mix-blend-mode: screen;
  animation: dust-drift 13s linear infinite;
}
@keyframes dust-drift {
  from {
    transform: translate3d(-9%, -3%, 0);
  }
  to {
    transform: translate3d(9%, 3%, 0);
  }
}