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

.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 10px 16px;
  background: var(--panel-bg);
  border-bottom: 4px solid var(--panel-border);
  box-shadow: inset 0 -4px 0 rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
}

.topbar__title {
  font-size: 14px;
  margin: 0;
  color: var(--accent);
  text-shadow: 2px 2px 0 var(--panel-border);
}

.topbar .spacer {
  flex-grow: 1;
}

.inventory-slot {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: rgba(0, 0, 0, 0.25);
  border: 3px solid var(--panel-border);
  font-size: 14px;
}

.exit-menu-btn {
  padding: 8px 12px;
  background: rgba(0, 0, 0, 0.25);
  border: 3px solid var(--panel-border);
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
}

.exit-menu-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.main-menu {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  background: var(--panel-bg);
}

.main-menu__version {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  font-size: 10px;
  color: var(--panel-border);
}

.main-menu__title {
  font-size: 32px;
  margin: 0;
  color: var(--accent);
  text-shadow: 4px 4px 0 var(--panel-border);
}

.main-menu__buttons {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 260px;
}

/* Temporary — see MainMenu.ts/DebugCharacterPreview.ts. */
.main-menu__debug-preview {
  width: 128px;
  height: 128px;
}

.menu-btn {
  padding: 16px;
  background: rgba(0, 0, 0, 0.25);
  border: 4px solid var(--panel-border);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
}

.menu-btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.menu-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.main-row {
  display: flex;
  flex-direction: row;
  flex-grow: 1;
  min-height: 0;
}

.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--panel-bg);
  border-right: 4px solid var(--panel-border);
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar__title {
  font-size: 13px;
  margin: 0;
  color: var(--accent);
  text-shadow: 2px 2px 0 var(--panel-border);
}

.upgrade-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.upgrade-btn {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px;
  background: rgba(0, 0, 0, 0.25);
  border: 3px solid var(--panel-border);
  color: var(--text);
  font-family: inherit;
  font-size: 10px;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
}

.upgrade-btn:hover:not(:disabled) {
  border-color: var(--accent);
}

.upgrade-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.upgrade-btn__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.upgrade-btn__level {
  color: var(--accent);
  flex-shrink: 0;
}

.upgrade-btn__effects {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #cbd5c0;
}

.upgrade-btn__arrow {
  color: var(--accent);
}

.upgrade-btn__cost {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
  color: #f5c518;
}

.game-map {
  position: relative;
  flex-grow: 1;
  overflow: hidden;
  background-color: #4caf50;
  background-image:
    linear-gradient(45deg, #46a047 25%, transparent 25%),
    linear-gradient(-45deg, #46a047 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #46a047 75%),
    linear-gradient(-45deg, transparent 75%, #46a047 75%);
  background-size: 32px 32px;
  background-position: 0 0, 0 16px, 16px -16px, -16px 0px;
  cursor: default;
  touch-action: none;
  user-select: none;
}

/* Wraps the blood-moon banner and death screen, both absolutely positioned over the game canvas
 * (see GameOverlays.ts) — pointer-events is re-enabled on .game-over-overlay below for its button. */
.game-overlays {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
}

.blood-moon-banner {
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 9999;
  font-size: 24px;
  color: #e63946;
  text-shadow: 3px 3px 0 #2a0505;
  animation: blood-moon-pulse 1s ease-in-out infinite;
  white-space: nowrap;
}

@keyframes blood-moon-pulse {
  0%, 100% {
    opacity: 1;
    transform: translateX(-50%) scale(1);
  }
  50% {
    opacity: 0.75;
    transform: translateX(-50%) scale(1.08);
  }
}

/* Author `display: flex` below otherwise wins the cascade over the UA stylesheet's
 * `[hidden] { display: none }` (equal specificity, author beats user-agent) — without this, toggling
 * the `hidden` IDL property (see GameOverlays.ts) wouldn't actually hide the element. */
.game-over-overlay[hidden] {
  display: none;
}

.game-over-overlay {
  position: absolute;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  pointer-events: auto;
}

.game-over-overlay__message {
  font-size: 16px;
  color: var(--accent);
  text-shadow: 2px 2px 0 var(--panel-border);
  text-align: center;
  padding: 0 20px;
}

.game-over-overlay__stats {
  font-size: 11px;
  color: var(--text);
  text-align: center;
  line-height: 1.8;
  display: flex;
  flex-direction: column;
  gap: 4px;
}