:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e2230;
  --text: #edf2ff;
  --muted: #98a2b3;
  --line: #2b3242;
  --accent: #7cdd7b;
  --danger: #ff7a7a;
  --shadow: rgba(0, 0, 0, 0.25);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top, rgba(124, 221, 123, 0.10), transparent 35%),
    linear-gradient(180deg, #10131a 0%, #0b0d12 100%);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow: hidden;
}

body {
  padding: 0;
}

.app {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.overlayCard, .hud {
  background: rgba(23, 26, 33, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 16px 40px var(--shadow);
  backdrop-filter: blur(10px);
  border-radius: 18px;
}

.hud {
  position: fixed;
  left: max(10px, env(safe-area-inset-left));
  right: max(10px, env(safe-area-inset-right));
  bottom: max(10px, env(safe-area-inset-bottom));
  padding: 10px;
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(120px, 160px) 1fr;
  align-items: center;
  max-width: 760px;
  margin: 0 auto;
}

.nicknameField {
  display: block;
}

.nicknameField input {
  width: 100%;
}

.palette {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.statusLine {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

.statusLine span {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
}

.field, .paletteWrap {
  display: grid;
  gap: 8px;
}

.field span, .paletteWrap span {
  color: var(--muted);
  font-size: 14px;
}

.field input, .overlayRow input {
  height: 42px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  outline: none;
}

.field input:focus, .overlayRow input:focus {
  border-color: rgba(124, 221, 123, 0.5);
}

.palette {
  justify-content: flex-start;
}

.color-btn {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  border: 2px solid rgba(255, 255, 255, 0.14);
  cursor: pointer;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.2);
}

.color-btn.active {
  border-color: white;
  transform: translateY(-1px);
}

#board {
  position: fixed;
  left: 50%;
  top: 50%;
  width: 100vmin;
  height: 100vmin;
  transform: translate(-50%, -50%);
  border-radius: 14px;
  border: 0;
  background: #fff;
  image-rendering: pixelated;
  cursor: crosshair;
  touch-action: none;
  user-select: none;
}

.overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(5, 7, 11, 0.72);
}

.overlay.hidden {
  display: none;
}

.overlayCard {
  width: min(92vw, 420px);
  padding: 22px;
}

.overlayRow {
  display: grid;
  gap: 10px;
}

.overlayRow button {
  height: 42px;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: #062006;
  font-weight: 700;
  cursor: pointer;
}

@media (max-width: 800px) {
  .hud {
    grid-template-columns: 1fr;
  }

  #board {
    width: 100vmin;
    height: 100vmin;
  }
}