:root {
  color-scheme: dark;
  --bg: #0b1020;
  --panel: rgba(255, 255, 255, 0.06);
  --panel2: rgba(255, 255, 255, 0.09);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --accent: #7c5cff;
  --danger: #ff4d6d;
  --win: #29d17d;
  --tile: rgba(255, 255, 255, 0.08);
  --tileStroke: rgba(255, 255, 255, 0.10);
  --blocked: rgba(0, 0, 0, 0.75);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: radial-gradient(1200px 700px at 20% 10%, rgba(124, 92, 255, 0.22), transparent 55%),
    radial-gradient(900px 700px at 80% 30%, rgba(41, 209, 125, 0.12), transparent 55%),
    radial-gradient(800px 600px at 60% 90%, rgba(255, 77, 109, 0.08), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
}

.version {
  position: fixed;
  left: 50%;
  bottom: max(10px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.10);
  color: rgba(255, 255, 255, 0.60);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2px;
  backdrop-filter: blur(10px);
  pointer-events: none;
  user-select: none;
  z-index: 20;
}

.app {
  min-height: 100%;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.topbar {
  padding: 14px 14px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.title__name {
  font-weight: 700;
  letter-spacing: 0.2px;
  font-size: 18px;
  line-height: 1.1;
}

.title__sub {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 4px;
}

.controls {
  display: flex;
  gap: 10px;
}

.btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.06));
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 650;
  letter-spacing: 0.2px;
}

.btn:active {
  transform: translateY(1px);
}

.main {
  flex: 1;
  padding: 0 14px 16px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: start;
}

.boardWrap,
.panel {
  min-width: 0;
}

.boardWrap {
  position: relative;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
  border: 1px solid rgba(255, 255, 255, 0.10);
  overflow: hidden;
}

.board {
  width: 100%;
  height: min(74dvh, 680px);
  display: block;
  touch-action: none;
}

.toast {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.10);
  color: var(--text);
  backdrop-filter: blur(10px);
  display: none;
  font-weight: 650;
  letter-spacing: 0.1px;
}

.toast.toast--show {
  display: block;
}

.toast.toast--lose {
  border-color: rgba(255, 77, 109, 0.35);
}

.toast.toast--win {
  border-color: rgba(41, 209, 125, 0.35);
}

.panel {
  padding: 12px 12px;
  border-radius: 18px;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.10);
}

.panel__row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.panel__row--help {
  margin-top: 10px;
  grid-template-columns: 1fr;
}

.stat {
  border-radius: 14px;
  background: var(--panel2);
  border: 1px solid rgba(255, 255, 255, 0.10);
  padding: 10px 10px;
}

.stat__label {
  font-size: 12px;
  color: var(--muted);
}

.stat__value {
  font-size: 14px;
  font-weight: 750;
  margin-top: 6px;
}

.help__title {
  font-weight: 750;
  letter-spacing: 0.2px;
}

.help__list {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

@media (max-width: 520px) {
  .topbar {
    padding: 12px 12px 8px;
  }

  .main {
    padding: 0 12px 12px;
    gap: 10px;
  }

  /* Give the board more of the screen on phones */
  .board {
    height: calc(100dvh - 170px);
    min-height: 420px;
  }

  .panel {
    padding: 10px 10px;
  }

  .stat {
    padding: 9px 9px;
  }

  .panel__row--help {
    display: none;
  }
}

@media (min-width: 980px) {
  .main {
    grid-template-columns: 1.4fr 0.8fr;
  }

  .board {
    height: min(75vh, 720px);
  }
}