:root {
  color-scheme: dark;
  --ink: #e9e3d2;
  --panel: rgba(18, 31, 38, 0.74);
  --line: rgba(233, 227, 210, 0.3);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #17395f;
  font-family: "Georgia", "Times New Roman", serif;
}

#scene {
  display: block;
  width: 100vw;
  height: 100vh;
  cursor: grab;
  touch-action: none;
}

#scene.dragging {
  cursor: grabbing;
}

#hud {
  position: fixed;
  right: 18px;
  bottom: 18px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 7px;
  box-shadow: 0 4px 18px rgba(5, 12, 16, 0.28);
  backdrop-filter: blur(3px);
  pointer-events: none;
}

#hud button {
  pointer-events: auto;
  min-width: 34px;
  height: 32px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(237, 230, 211, 0.08);
  color: var(--ink);
  font: 600 15px/1 "Georgia", "Times New Roman", serif;
  cursor: pointer;
}

#hud button:hover {
  background: rgba(237, 230, 211, 0.18);
}

#hud button:active {
  transform: translateY(1px);
}

#readout {
  min-width: 50px;
  padding: 0 6px;
  color: var(--ink);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-align: right;
}

#title {
  position: fixed;
  left: 22px;
  top: 18px;
  margin: 0;
  color: rgba(244, 238, 222, 0.9);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  text-shadow: 0 1px 6px rgba(8, 20, 28, 0.5);
}

#hint {
  position: fixed;
  left: 22px;
  bottom: 18px;
  margin: 0;
  color: rgba(240, 235, 222, 0.68);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-shadow: 0 1px 4px rgba(8, 20, 28, 0.6);
}

#signature {
  position: fixed;
  right: 18px;
  top: 18px;
  max-width: 46vw;
  margin: 0;
  color: rgba(240, 235, 222, 0.62);
  font-size: 10px;
  line-height: 1.4;
  letter-spacing: 0.04em;
  text-align: right;
  text-shadow: 0 1px 4px rgba(8, 20, 28, 0.6);
  pointer-events: none;
}

@media (max-width: 560px) {
  #signature {
    top: 42px;
    max-width: 52vw;
    font-size: 9px;
  }

  #title {
    font-size: 10px;
    letter-spacing: 0.22em;
  }

  #hint {
    max-width: 190px;
  }
}