:root {
  --bg: #020617;
  --panel: #0b1220;
  --accent: #f97316;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: #1f2937;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: radial-gradient(circle at 20% 0%, #111827, #020617);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

#game {
  position: fixed;
  inset: 0;
}

/* Generic panel style */
.panel {
  position: absolute;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
  color: var(--text);
}

.hidden { display: none; }

.row {
  display: flex;
  gap: 8px;
  margin: 6px 0;
}

/* Auth panel */
#ui-auth .panel {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 16px;
  width: 280px;
}

input, button {
  background: #020617;
  color: var(--text);
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 6px 8px;
  font-size: 14px;
}

button {
  cursor: pointer;
}

button:hover {
  border-color: var(--accent);
}

/* HUD */
#ui-hud .panel {
  top: 10px;
  left: 10px;
  right: 10px;
  padding: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#xpbar {
  position: relative;
  width: 220px;
  height: 18px;
  border-radius: 999px;
  background: #020617;
  overflow: hidden;
  border: 1px solid var(--border);
}

#xpfill {
  position: absolute;
  inset: 0;
  width: 20%;
  background: linear-gradient(90deg, #f97316, #22c55e);
}

#xplabel {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

/* Chat */
#ui-chat .panel {
  left: 10px;
  bottom: 10px;
  width: 320px;
  padding: 8px;
}

#chat-log {
  height: 140px;
  overflow-y: auto;
  background: #020617;
  border-radius: 8px;
  padding: 6px;
  border: 1px solid var(--border);
  font-size: 12px;
}

/* Inventory & crafting */
#ui-inventory .panel,
#ui-crafting .panel {
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  width: 360px;
  max-height: 60vh;
  overflow-y: auto;
  padding: 10px;
}

#inv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.slot {
  background: #020617;
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 6px;
  font-size: 12px;
  text-align: center;
}