:root {
  --bg-shelf: #ffffff;
  --bg-box: #fffaf0;
  --bg-box-border: #000000;
  --item-border: #bec6ce;
  --slot-border: #bec6ce;
  --text-main: #222222;
  --text-muted: #666666;
  --accent: #f7e55f;
  --accent-blue: #3a7ede;
  --match-green: #589a56;
}

#game-app {
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  font-family: "Comic Relief", system-ui, sans-serif;
  color: var(--text-main);
}

/* Header & Controls */
.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 8px 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 12px;
}

.title-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.title-group h1 {
  font-size: 1.8rem;
  margin: 0;
  font-weight: 700;
  color: #000;
}

.level-badge {
  font-size: 0.95rem;
  padding: 4px 14px;
  cursor: default;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn, .theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease;
  font-size: 1.3rem;
}

.icon-btn:active, .theme-toggle-btn:active {
  transform: scale(0.92);
}

.game-instructions {
  margin-bottom: 16px;
  font-size: 1rem;
  color: var(--text-muted);
  text-align: center;
  max-width: 620px;
}

/* Status Bar */
.status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 820px;
  padding: 4px 16px 12px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.status-bar strong {
  color: #000;
}

/* Main Board Grid */
.game-area {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 380px;
  padding: 10px;
}

.pantry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  width: 100%;
  max-width: 840px;
  margin: auto;
}

/* 3-slot Box */
.box {
  background: var(--bg-box);
  border: 2px solid var(--bg-box-border);
  border-radius: 20px;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s, box-shadow 0.2s;
  cursor: pointer;
  position: relative;
}

.box.selected {
  border-color: var(--accent-blue);
  box-shadow: 0 4px 12px rgba(58, 126, 222, 0.2);
}

.box.hinted {
  animation: pulse-hint 1s infinite alternate;
}

@keyframes pulse-hint {
  from { border-color: rgba(247, 229, 95, 0.6); box-shadow: 0 0 8px rgba(247, 229, 95, 0.4); }
  to { border-color: #3a7ede; box-shadow: 0 0 18px rgba(58, 126, 222, 0.6); }
}

.box.closed {
  background: #f0fdf4;
  border-color: var(--match-green);
  box-shadow: 0 2px 6px rgba(88, 154, 86, 0.12);
  cursor: default;
  pointer-events: none;
}

.box-slots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
  height: 64px;
  align-items: center;
}

.slot {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: transparent;
  border: none;
  position: relative;
}

.slot.empty {
  border: 2px dotted var(--slot-border);
  background: rgba(0, 0, 0, 0.045);
}

.item {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background: #ffffff;
  border: 2px solid var(--item-border);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
  transition: border-color 0.15s, box-shadow 0.15s;
  cursor: pointer;
}

.item.selected {
  border-color: var(--accent-blue);
  box-shadow: 0 2px 8px rgba(58, 126, 222, 0.35);
}

.item.poofing {
  animation: poof-out 0.45s forwards cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes poof-out {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.25) rotate(8deg); opacity: 0.8; }
  100% { transform: scale(0) rotate(-15deg); opacity: 0; }
}

.box-lid-closed {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--match-green);
  font-weight: bold;
  font-size: 1.05rem;
  background: #dcfce7;
  border: 2px dashed var(--match-green);
  border-radius: 14px;
  grid-column: span 3;
  height: 100%;
}

/* Puff Particles */
.puff-particle {
  position: fixed;
  pointer-events: none;
  font-size: 1.4rem;
  z-index: 10000;
  animation: puff-fly 0.6s forwards ease-out;
}

@keyframes puff-fly {
  0% { transform: translate(0, 0) scale(1); opacity: 1; }
  100% { transform: translate(var(--tx), var(--ty)) scale(0.3); opacity: 0; }
}

/* Bottom Toolbar */
.toolbar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 16px 8px 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.toolbar button.button {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.toolbar button.button:active {
  transform: scale(0.95);
}

.toolbar button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  padding: 20px;
  transition: opacity 0.2s ease;
}

.modal-backdrop.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-card {
  background: #ffffff;
  border: 2px solid #000;
  border-radius: 24px;
  padding: 32px 28px;
  max-width: 420px;
  width: 100%;
  text-align: center;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
  position: relative;
  animation: modal-pop 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modal-pop {
  from { transform: scale(0.85); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.celebration-icon {
  font-size: 3rem;
  margin-bottom: 8px;
  animation: bounce 0.6s infinite alternate ease-in-out;
}

@keyframes bounce {
  from { transform: translateY(0); }
  to { transform: translateY(-8px); }
}

.modal-card h2 {
  font-size: 1.8rem;
  margin-bottom: 8px;
  color: #000;
}

.modal-subtext {
  color: #666;
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.modal-stats {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 24px;
  padding: 12px 18px;
  background: #f4f8fa;
  border: 2px solid #ddd;
  border-radius: 16px;
}

.modal-stats div {
  font-size: 0.95rem;
  color: #555;
  display: flex;
  flex-direction: column;
}

.modal-stats strong {
  font-size: 1.5rem;
  color: #000;
}

.modal-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}

/* Settings Card */
.settings-card {
  text-align: left;
}

.settings-card h2 {
  text-align: center;
  margin-bottom: 18px;
}

.setting-row {
  margin-bottom: 16px;
}

.setting-row label {
  display: block;
  font-weight: bold;
  margin-bottom: 6px;
  font-size: 0.95rem;
  color: #333;
}

.setting-row select {
  width: 100%;
  padding: 10px 14px;
  font-size: 1rem;
  font-family: "Comic Relief", system-ui, sans-serif;
  border: 2px solid #000;
  border-radius: 16px;
  background: #ffffff;
  color: #000;
  outline: none;
}

.hidden {
  display: none !important;
}

#game-app, #game-app * {
  box-sizing: border-box;
}

@media (max-width: 700px) {
  .title-group {
    flex-wrap: wrap;
  }
  .pantry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .box {
    min-width: 0;
    padding: 8px;
    border-radius: 16px;
  }
  .box-slots {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    height: 54px;
    gap: 4px;
  }
  .item {
    width: 42px;
    max-width: 100%;
    height: 42px;
    font-size: 1.5rem;
  }
}

@media (max-width: 360px) {
  .pantry-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Site page pattern: centred title, with the level badge and buttons as a nav row beneath it */
.game-header {
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 12px;
}

.title-group {
  display: contents;
}

.title-group h1 {
  flex-basis: 100%;
  margin: 0 0 4px;
  font-size: 2em;
  text-align: center;
}