#game-app, .modal-backdrop {
  --bg-board: #fdf6ea;
  --bg-tray: #fffaf0;
  --board-border: #000000;
  --slot-empty-bg: rgba(0, 0, 0, 0.045);
  --text-main: #222222;
  --text-muted: #555555;
  --accent-blue: #3a7ede;
  --accent-yellow: #f7e55f;
  --match-green: #589a56;
  --coral: #ec8d6f;
  --purple: #dcb0ed;
  --aqua: #82dee6;
  --grey: #bec6ce;
}

#game-app, #game-app *, #game-app *::before, #game-app *::after,
.modal-backdrop, .modal-backdrop *, .modal-backdrop *::before, .modal-backdrop *::after {
  box-sizing: border-box;
}

#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: center;
  align-items: center;
  width: 100%;
  padding: 8px 12px;
  margin-bottom: 6px;
  flex-wrap: wrap;
  gap: 8px 12px;
}

.title-group {
  display: contents;
}

.title-group h1 {
  flex-basis: 100%;
  margin: 0 0 4px;
  font-size: 2em;
  font-weight: 700;
  color: #000;
  text-align: center;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

button.icon-btn, .icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  padding: 0 !important;
  border: 2px solid #000;
  border-radius: 50% !important;
  cursor: pointer;
  flex-shrink: 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
  transition: transform 0.1s ease, background-color 0.1s;
}

button.icon-btn svg, .icon-btn svg {
  display: block;
  flex-shrink: 0;
  pointer-events: none;
}

.icon-btn:hover {
  transform: translateY(-1px);
}

.icon-btn:active {
  transform: translateY(1px);
}

.game-instructions {
  font-size: 0.95rem;
  color: var(--text-muted);
  text-align: center;
  margin: 0 0 10px;
  max-width: 620px;
  line-height: 1.4;
}

/* Status Bar & Progress Track */
.status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 540px;
  padding: 2px 12px 6px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

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

.progress-track {
  width: 100%;
  max-width: 520px;
  height: 12px;
  background: rgba(0, 0, 0, 0.05);
  border: 2px solid #000;
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 14px;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--match-green);
  transition: width 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Playfield & Hex Board */
.playfield-container {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 16px;
}

.board-frame {
  position: relative;
  padding: 20px 24px;
  background: var(--bg-board);
  border: 2px solid var(--board-border);
  border-radius: 24px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: visible;
}

.hex-board {
  position: relative;
  margin: 0 auto;
}

.hex-cell {
  position: absolute;
  cursor: pointer;
  outline: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hex-cell.occupied {
  cursor: default;
}

.hex-base-svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
  pointer-events: none;
}

.hex-base-poly {
  fill: var(--slot-empty-bg);
  stroke: #bec6ce;
  stroke-width: 2;
  stroke-dasharray: 3 4;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
  transition: stroke 0.15s ease, fill 0.15s ease;
}

.hex-cell.can-drop:hover .hex-base-poly,
.hex-cell:focus-visible .hex-base-poly,
.hex-cell.drag-over .hex-base-poly {
  stroke: #3a7ede;
  stroke-dasharray: none;
  fill: rgba(58, 126, 222, 0.1);
}

.hex-cell.bonk {
  animation: cell-bonk 0.26s ease;
}

@keyframes cell-bonk {
  0%, 100% { transform: translateX(0); }
  30% { transform: translateX(-4px); }
  70% { transform: translateX(4px); }
}

/* Stacked Hex Tiles inside a cell or tray slot */
.hex-stack {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hex-tile {
  position: absolute;
  inset: 0;
  transform: translateY(var(--offset-y, 0px));
  transition: transform 0.18s ease;
  pointer-events: none;
}

.hex-tile svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}

.hex-tile-poly {
  fill: var(--tile-color, #f7e55f);
  stroke: #000000;
  stroke-width: 1;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.hex-tile-count {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--tile-text, #000000);
  line-height: 1;
  pointer-events: none;
}

.hex-tile.flying {
  position: fixed;
  inset: auto;
  z-index: 9000;
  pointer-events: none;
  transform-origin: center center;
}

.hex-tile.poofing {
  animation: hex-poof 0.24s forwards cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes hex-poof {
  0% { transform: translateY(0) scale(1); opacity: 1; }
  45% { transform: translateY(-10px) scale(1.12); opacity: 0.9; }
  100% { transform: translateY(-18px) scale(0.2); opacity: 0; }
}

/* 3-Slot Tray (Fixed Positions, Never Shifts or Collapses) */
.tray-container {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-bottom: 10px;
}

.tray-frame {
  background: var(--bg-tray);
  border: 2px solid #000;
  border-radius: 22px;
  padding: 14px 20px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.hex-tray {
  display: grid;
  grid-template-columns: repeat(3, 108px);
  gap: 16px;
  justify-content: center;
  align-items: center;
}

.tray-slot {
  position: relative;
  width: 108px;
  height: 98px;
  border-radius: 16px;
  background: #ffffff;
  border: 2px solid #bec6ce;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.tray-slot.empty {
  background: rgba(0, 0, 0, 0.045);
  border: 2px dotted #bec6ce;
  cursor: default;
}

.tray-slot:not(.empty):hover,
.tray-slot:not(.empty):focus-visible {
  border-color: #3a7ede;
}

/* Selection feedback: border color + soft ambient glow, NO upward translation */
.tray-slot.selected {
  border-style: solid;
  border-color: #3a7ede;
  box-shadow: 0 0 14px rgba(58, 126, 222, 0.35);
}

.tray-stack-wrap {
  position: relative;
  width: 72px;
  height: 64px;
  margin-top: 20px;
  pointer-events: none;
}

/* Drag Ghost */
.drag-ghost {
  position: fixed;
  width: 76px;
  height: 68px;
  pointer-events: none;
  z-index: 9500;
  transform: translate(-50%, -50%);
}

/* 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: 10px 8px 16px;
  flex-wrap: wrap;
}

.toolbar button:disabled {
  opacity: 0.45;
  cursor: default;
}

/* Buttons Base & Design System Palette */
#game-app .button, .modal-backdrop .button {
  font-family: "Comic Relief", system-ui, sans-serif;
  font-size: 1rem;
  font-weight: bold;
  border: 2px solid #000;
  border-radius: 24px;
  padding: 8px 24px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: #000;
  white-space: nowrap;
  text-decoration: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.06);
  transition: transform 0.1s ease, background-color 0.1s ease;
}

#game-app .button:hover, .modal-backdrop .button:hover {
  transform: translateY(-1px);
}

#game-app .button:active, .modal-backdrop .button:active {
  transform: translateY(1px);
}

#game-app .button.aqua, .modal-backdrop .button.aqua {
  background-color: #82dee6;
  color: #000000;
}
#game-app .button.aqua:hover, .modal-backdrop .button.aqua:hover {
  background-color: #46ceda;
}

#game-app .button.grey, .modal-backdrop .button.grey {
  background-color: #bec6ce;
  color: #000000;
}
#game-app .button.grey:hover, .modal-backdrop .button.grey:hover {
  background-color: #a7b2bd;
}

#game-app .button.yellow, .modal-backdrop .button.yellow {
  background-color: #f7e55f;
  color: #000000;
}
#game-app .button.yellow:hover, .modal-backdrop .button.yellow:hover {
  background-color: #f4da1e;
}

#game-app .button.green, .modal-backdrop .button.green {
  background-color: #589a56;
  color: #ffffff;
}
#game-app .button.green:hover, .modal-backdrop .button.green:hover {
  background-color: #4f8b4d;
}

#game-app .button.coral, .modal-backdrop .button.coral {
  background-color: #ec8d6f;
  color: #000000;
}
#game-app .button.coral:hover, .modal-backdrop .button.coral:hover {
  background-color: #e87550;
}

#game-app .button.purple, .modal-backdrop .button.purple {
  background-color: #dcb0ed;
  color: #000000;
}
#game-app .button.purple:hover, .modal-backdrop .button.purple:hover {
  background-color: #cd8ee5;
}

/* 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: 440px;
  width: 100%;
  text-align: center;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
  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: 2.8rem;
  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;
  font-weight: bold;
  color: #333;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  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;
}

@media (max-width: 540px) {
  .board-frame {
    padding: 14px 12px;
  }
  .tray-frame {
    padding: 10px 12px;
  }
  .hex-tray {
    grid-template-columns: repeat(3, 88px);
    gap: 10px;
  }
  .tray-slot {
    width: 88px;
    height: 84px;
  }
  .tray-stack-wrap {
    width: 62px;
    height: 56px;
  }
}