:root {
  color-scheme: dark;
  --ink: #f3f0e8;
  --mist: #b6c5d8;
  --violet: #7b8cff;
  --deep: #101015;
  --forest: #15241e;
}

@font-face {
  font-family: "TSpin Traveler Display";
  src: url("assets/fonts/TSpinTravelerDisplay.woff2") format("woff2"),
       url("assets/fonts/TSpinTravelerDisplay.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

body {
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 12%, rgba(104, 224, 207, 0.18), transparent 30%),
    radial-gradient(circle at 80% 72%, rgba(143, 112, 255, 0.16), transparent 34%),
    linear-gradient(145deg, #05070b 0%, #11181a 48%, #070711 100%);
  color: var(--ink);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

.shell {
  position: relative;
  width: min(100vw, calc(100vh * 16 / 9));
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(127, 232, 222, 0.2);
  background: #0a0d0e;
  box-shadow:
    0 18px 70px rgba(0, 0, 0, 0.62),
    0 0 34px rgba(110, 226, 214, 0.12);
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: auto;
}

.screen-note {
  position: absolute;
  left: 50%;
  bottom: 6px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-content: center;
  width: min(1080px, calc(100% - 28px));
  max-width: min(1080px, calc(100% - 28px));
  transform: translateX(-50%);
  gap: 8px 10px;
  padding: 6px 14px;
  border: 1px solid rgba(129, 239, 232, 0.46);
  border-radius: 12px;
  background:
    linear-gradient(180deg, rgba(12, 20, 31, 0.9), rgba(4, 8, 16, 0.84)),
    radial-gradient(circle at 50% 0%, rgba(133, 96, 255, 0.16), transparent 62%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 0 20px rgba(102, 211, 255, 0.08),
    0 10px 34px rgba(0, 0, 0, 0.34),
    0 0 22px rgba(92, 218, 255, 0.1);
  color: rgba(249, 254, 255, 0.98);
  font-size: clamp(12px, 1vw, 16px);
  font-weight: 800;
  line-height: 1.15;
  opacity: 0.98;
  pointer-events: none;
  white-space: normal;
  transition: opacity 160ms ease, transform 160ms ease;
  backdrop-filter: blur(8px);
}

.screen-note span {
  flex: 0 0 auto;
  min-height: 30px;
  padding: 6px 10px;
  border: 1px solid rgba(156, 246, 240, 0.62);
  border-radius: 8px;
  background: rgba(8, 15, 26, 0.84);
  box-shadow:
    inset 0 0 14px rgba(140, 120, 255, 0.16),
    0 0 14px rgba(93, 229, 255, 0.1);
  text-shadow: 0 0 8px rgba(225, 255, 252, 0.34);
  text-align: center;
}

.screen-note.menu {
  opacity: 0;
}

.screen-note.compact {
  left: 50%;
  right: auto;
  bottom: 6px;
  transform: translateX(-50%);
  opacity: 0.98;
}

.screen-note.countdown {
  opacity: 0.28;
}

.screen-note.compact .play-hint {
  display: inline-block;
}

.screen-note.compact .utility-hint {
  display: inline-block;
  border-color: rgba(190, 170, 255, 0.48);
  color: rgba(231, 239, 255, 0.92);
  background: rgba(9, 12, 25, 0.78);
}

@media (max-width: 760px) {
  body {
    overflow: auto;
    padding: 8px;
  }

  .shell {
    width: 100%;
  }

  .screen-note {
    top: calc(100% + 8px);
    bottom: auto;
    width: calc(100% - 10px);
    max-width: calc(100% - 10px);
    gap: 5px 6px;
    padding: 5px 7px;
    border-radius: 10px;
    font-size: clamp(10px, 2.4vw, 13px);
  }

  .screen-note span {
    min-height: 30px;
    padding: 6px 8px;
    border-radius: 7px;
  }

  .screen-note.compact {
    top: calc(100% + 8px);
    bottom: auto;
  }
}