:root {
  --sky-1: #7dd3fc;
  --sky-2: #c4b5fd;
  --ink: #1e293b;
  --go: #22c55e;
  --go-dark: #15803d;
  --photo: #f59e0b;
  --photo-dark: #b45309;
  --panel: rgba(255, 255, 255, 0.82);
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  overscroll-behavior: none;
}

/* Kill browser double-tap / pinch zoom everywhere; the stage handles its own gestures. */
html, body, body * { touch-action: manipulation; }
#stageWrap, #stageWrap * { touch-action: none; }

body {
  height: 100dvh;
  display: flex;
  flex-direction: column;
  font-family: "Baloo 2", "Comic Sans MS", "Segoe UI Rounded", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: linear-gradient(160deg, var(--sky-1), var(--sky-2) 55%, #fbcfe8);
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

/* ---------- top bar ---------- */

.topbar {
  flex: 0 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
  padding: 6px max(10px, env(safe-area-inset-right)) 8px max(10px, env(safe-area-inset-left));
  padding-top: max(6px, env(safe-area-inset-top));
  background: var(--panel);
  box-shadow: 0 4px 18px rgba(30, 41, 59, 0.18);
  z-index: 5;
}

.logo {
  margin: 0;
  font-size: clamp(20px, 2.2vw, 26px);
  letter-spacing: 0.3px;
  white-space: nowrap;
}

/* Let the buttons flow with the logo and status so narrow screens wrap into as few rows as possible. */
.controls { display: contents; }

.status {
  margin-left: auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 15px;
  font-weight: 700;
  background: #fff;
  border-radius: 999px;
  padding: 7px 14px;
  box-shadow: inset 0 0 0 2px rgba(30, 41, 59, 0.08);
  white-space: nowrap;
}

.label-short { display: none; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  border-radius: 14px;
  padding: 9px 14px;
  font: inherit;
  font-weight: 800;
  font-size: 15px;
  color: #fff;
  background: #64748b;
  box-shadow: 0 4px 0 #475569;
  cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.08s ease, filter 0.15s ease;
}

.btn:active:not(:disabled) {
  transform: translateY(3px);
  box-shadow: 0 1px 0 #475569;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  filter: grayscale(0.5);
}

.btn-photo { background: var(--photo); box-shadow: 0 4px 0 var(--photo-dark); }
.btn-photo:active { box-shadow: 0 1px 0 var(--photo-dark); }

.btn-go { background: var(--go); box-shadow: 0 4px 0 var(--go-dark); }
.btn-go:active:not(:disabled) { box-shadow: 0 1px 0 var(--go-dark); }

.btn-ghost { background: #fff; color: var(--ink); box-shadow: 0 4px 0 #cbd5e1; }
.btn-ghost:active:not(:disabled) { box-shadow: 0 1px 0 #cbd5e1; }
.btn-ghost[aria-pressed="true"] { background: #fde68a; box-shadow: 0 4px 0 #d97706; }

.count-group {
  display: flex;
  align-items: center;
  gap: 4px;
  background: #fff;
  border-radius: 999px;
  padding: 4px 6px 4px 12px;
  box-shadow: 0 4px 0 #cbd5e1;
}

.count-label { font-weight: 800; font-size: 15px; margin-right: 2px; }
.count-icon { display: none; }

.chip {
  border: none;
  border-radius: 999px;
  min-width: 44px;
  padding: 7px 8px;
  font: inherit;
  font-weight: 800;
  font-size: 15px;
  color: var(--ink);
  background: #e2e8f0;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
}

.chip:hover { background: #cbd5e1; }
.chip.is-active { background: #0ea5e9; color: #fff; transform: scale(1.06); }

/* ---------- stage ---------- */

#stageWrap {
  position: relative;
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 0;
  margin: 0 env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

#stage {
  position: relative;
  transform-origin: center center;
}

#board {
  position: absolute;
  border-radius: 10px;
  outline: 3px dashed rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.22);
  box-shadow: inset 0 0 26px rgba(30, 41, 59, 0.16);
  overflow: hidden;
  display: none;
  transition: outline-color 0.6s ease, background-color 0.6s ease, box-shadow 0.6s ease;
}

#board.is-ready { display: block; }

#board.is-complete {
  outline-color: transparent;
  background-color: transparent;
  box-shadow: none;
}

#ghost {
  display: block;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.25s ease;
}

#board.peek #ghost { opacity: 0.42; }

#piecesLayer {
  position: absolute;
  inset: 0;
}

#stage.is-showcased {
  opacity: 0;
  transition: opacity 0.3s ease 0.6s;
}

/* The finished photo, blown up to fill the play area. */
.showcase {
  position: absolute;
  left: 0;
  top: 0;
  border-radius: 10px;
  box-shadow: 0 18px 50px rgba(30, 41, 59, 0.35);
  transform-origin: 0 0;
  pointer-events: none;
  z-index: 10;
}

.showcase[hidden] { display: none; }
.showcase.is-growing { transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1); }

@media (prefers-reduced-motion: reduce) {
  .showcase.is-growing, #stage.is-showcased { transition: none; }
}

.piece {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: center center;
  cursor: grab;
  will-change: transform;
}

.piece.snapping { transition: transform 0.16s cubic-bezier(0.34, 1.3, 0.64, 1); }
.piece.dragging { cursor: grabbing; filter: drop-shadow(0 10px 10px rgba(30, 41, 59, 0.45)); }
.piece.locked { cursor: default; }

.piece.wiggle { animation: wiggle 0.4s ease; }

@keyframes wiggle {
  0%, 100% { filter: none; }
  20% { filter: brightness(1.25); }
  50% { filter: brightness(1.25); }
}

.piece.pop { animation: pop 0.35s ease; }

@keyframes pop {
  0% { filter: brightness(1); }
  35% { filter: brightness(1.55) saturate(1.3); }
  100% { filter: brightness(1); }
}

/* ---------- hints / overlays ---------- */

.drop-hint {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  text-align: center;
}

.drop-hint[hidden] { display: none; }

.drop-hint-inner {
  background: rgba(255, 255, 255, 0.85);
  border: 4px dashed rgba(30, 41, 59, 0.25);
  border-radius: 24px;
  padding: 28px 44px;
  box-shadow: 0 10px 30px rgba(30, 41, 59, 0.18);
}

.drop-emoji { font-size: 60px; line-height: 1; }
.drop-hint p { margin: 8px 0 0; font-size: 18px; }
.muted { opacity: 0.7; font-size: 15px !important; }
.how-to { max-width: 30em; margin-top: 14px !important; }

.drop-overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(14, 165, 233, 0.35);
  backdrop-filter: blur(2px);
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  text-shadow: 0 3px 10px rgba(30, 41, 59, 0.6);
  z-index: 20;
  pointer-events: none;
}

.drop-overlay.is-on { display: flex; }

/* ---------- win ---------- */

.win-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.45);
  z-index: 50;
}

.win-overlay[hidden] { display: none; }

#confetti {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.win-card {
  position: relative;
  max-width: calc(100vw - 24px);
  background: #fff;
  border-radius: 28px;
  padding: 26px 40px 32px;
  text-align: center;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.45);
  animation: popIn 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.win-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  font: inherit;
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  color: var(--ink);
  background: #e2e8f0;
  cursor: pointer;
}

.win-close:hover { background: #cbd5e1; }

@keyframes popIn {
  from { transform: scale(0.5); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.win-emoji { font-size: 70px; line-height: 1; }
.win-card h2 { margin: 6px 0 2px; font-size: 34px; }
.win-card p { margin: 0 0 18px; font-size: 18px; opacity: 0.8; }
.win-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ---------- sparkles ---------- */

.sparkle {
  position: absolute;
  width: 10px;
  height: 10px;
  margin: -5px 0 0 -5px;
  border-radius: 50%;
  background: radial-gradient(circle, #fff 0%, #fde047 55%, rgba(253, 224, 71, 0) 70%);
  pointer-events: none;
  z-index: 40;
}

/* Tablets and laptops: short labels keep the toolbar on a single row. */
@media (max-width: 1599px) {
  .logo-text { display: none; }
  .label-full { display: none; }
  .label-short { display: inline; }
}

/* iPad landscape and narrower. */
@media (max-width: 1100px) {
  .logo { display: none; }
  .count-word { display: none; }
  .count-icon { display: inline; }
  .topbar { gap: 6px; }
  .btn { padding: 9px 11px; }
  .count-group { padding-left: 10px; }
  .chip { min-width: 40px; }
  .status { padding: 7px 12px; }
}

@media (max-width: 760px) {
  .status { margin-left: 0; }
  .btn, .chip, .count-label { font-size: 14px; }
  .btn { padding: 8px 11px; }
  .win-card { padding: 22px 20px 26px; }
}