:root {
  color-scheme: dark;
  --ink: #fff8ef;
  --muted: #f0e2d0;
  --line: rgba(255, 236, 214, 0.24);
  --glass: rgba(12, 24, 28, 0.58);
  --accent: #e37a45;
  --sand: #f0c9a0;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #0c1c22;
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  color: var(--ink);
}

#c {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

#vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 48%, rgba(0, 0, 0, 0.34) 100%);
  z-index: 1;
}

#fallback {
  position: fixed;
  inset: 0;
  z-index: 5;
  display: grid;
  place-items: center;
  padding: 24px;
  text-align: center;
  background: #102126;
  color: var(--ink);
  line-height: 1.6;
}

#fallback[hidden] { display: none; }

#hud {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

header, #stats, #panel, #toast { pointer-events: auto; }

header {
  position: absolute;
  top: max(16px, env(safe-area-inset-top));
  left: max(16px, env(safe-area-inset-left));
  max-width: min(420px, calc(100vw - 180px));
  pointer-events: none;
}

.eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--sand);
}

h1 {
  margin: 2px 0 6px;
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.05;
  text-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

.sub {
  margin: 0;
  max-width: 28em;
  color: var(--muted);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.45);
}

#stats {
  position: absolute;
  top: max(16px, env(safe-area-inset-top));
  right: max(16px, env(safe-area-inset-right));
  width: 148px;
  padding: 10px 12px 12px;
  border-radius: 18px;
  background: var(--glass);
  border: 1px solid var(--line);
  backdrop-filter: blur(16px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
  pointer-events: none;
}

.stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 4px;
}

.stat span {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 18px;
}

.stat small {
  color: var(--sand);
  font-size: 11px;
}

#map {
  width: 124px;
  height: 124px;
  margin-top: 6px;
  border-radius: 12px;
  display: block;
}

#panel {
  position: absolute;
  left: max(16px, env(safe-area-inset-left));
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  display: grid;
  grid-template-columns: 1.3fr 1.3fr 0.9fr auto;
  gap: 10px 16px;
  align-items: end;
  padding: 14px 16px 12px;
  border-radius: 20px;
  background: var(--glass);
  border: 1px solid var(--line);
  backdrop-filter: blur(18px);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.28);
}

label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 12px;
  color: var(--muted);
}

label b {
  color: var(--sand);
  font-weight: 500;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.22);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ffb15a;
  border: 2px solid #fff6ea;
  cursor: pointer;
}

select, button {
  font: inherit;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  min-height: 40px;
  cursor: pointer;
}

select { width: 100%; }

button:hover, select:hover { background: rgba(255, 255, 255, 0.16); }

button:focus-visible, select:focus-visible, input:focus-visible {
  outline: 2px solid #ffb15a;
  outline-offset: 2px;
}

button.primary {
  background: var(--accent);
  border-color: transparent;
  color: white;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.hint {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 12px;
  color: rgba(240, 226, 208, 0.78);
}

#toast {
  position: fixed;
  left: 50%;
  top: 42%;
  transform: translate(-50%, -10px);
  z-index: 3;
  margin: 0;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(12, 24, 28, 0.72);
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

#toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 860px) {
  header { max-width: calc(100vw - 32px); }
  .sub { display: none; }
  #stats { width: 116px; padding: 8px; }
  #map { width: 96px; height: 96px; }
  #panel {
    grid-template-columns: 1fr 1fr;
  }
  .actions { grid-column: 1 / -1; justify-content: flex-start; }
  .hint { display: none; }
}