/* ─── Workspace ──────────────────────────────────────────────────────────── */
.workspace {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 16px;
  margin-top: 22px;
  align-items: start;
}

.canvas-wrapper {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--sh-md);
  border: 2px solid var(--border);
  display: flex;
  flex-direction: column;
  min-width: 0; /* prevents grid blowout */
}

.canvas-actions {
  display: flex;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1.5px solid var(--border);
  background: var(--bg);
}

.action-btn {
  font-family: var(--ff-body);
  font-size: .85rem;
  font-weight: 800;
  padding: 7px 18px;
  border-radius: 50px;
  border: 2px solid var(--border);
  background: var(--card);
  color: var(--muted);
  cursor: pointer;
  transition: all .2s;
}
.action-btn:hover:not(:disabled) { border-color: var(--orange); color: var(--orange); transform: translateY(-1px); }
.action-btn:disabled { opacity: .4; cursor: not-allowed; }
.action-btn.active { border-color: var(--purple); color: var(--purple); background: rgba(124,77,255,0.09); }
.share-action-btn { color: var(--purple); border-color: rgba(124,77,255,.25); }
.share-action-btn:hover:not(:disabled) { border-color: var(--purple) !important; color: var(--purple) !important; background: rgba(124,77,255,.08); transform: translateY(-1px); }

/* Preview stage */
.preview-stage {
  position: relative;
  background: #fff;
  min-height: 480px;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.canvas-frame {
  position: relative;
  display: inline-block;
  max-width: 100%;
  line-height: 0;
  margin: 0 auto;
  touch-action: none;
  overflow: visible;
}
#preview-canvas {
  display: block;
  max-width: 100%;
  max-height: 85vh;
  width: auto;
  height: auto;
  cursor: crosshair;
}
@media (max-width: 640px) {
  #preview-canvas { max-height: 70vw; } /* square canvas stays compact on mobile */
}
#draw-canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  cursor: crosshair;
}
#draw-canvas.pencil-active {
  pointer-events: auto;
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Cpath d='M3 17.25V21h3.75L17.81 9.94l-3.75-3.75L3 17.25z' fill='%23333'/%3E%3Cpath d='M20.71 7.04a1 1 0 0 0 0-1.41l-2.34-2.34a1 1 0 0 0-1.41 0l-1.83 1.83 3.75 3.75 1.83-1.83z' fill='%23555'/%3E%3C/svg%3E") 0 24, crosshair;
}
.preview-stage.empty .canvas-frame { display: none; }
.empty-hint {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--muted);
  opacity: .45;
  pointer-events: none;
}
.empty-icon {
  font-size: 4rem;
  display: block;
  margin: 0 auto 10px;
  animation: floatIcon 3s ease-in-out infinite;
}
.empty-hint p { font-size: 1rem; font-weight: 700; }
.preview-stage:not(.empty) .empty-hint { display: none; }

/* ─── Loading overlay ────────────────────────────────────────────────────── */
.loading-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #fff;
  z-index: 5;
  gap: 18px;
  border-radius: inherit;
}
.loading-overlay.hidden { display: none; }

.loading-pencil {
  font-size: 4rem;
  display: block;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.15));
  animation: pencilDraw 2s ease-in-out infinite;
}
@keyframes pencilDraw {
  0%   { transform: translate(-28px,-18px) rotate(-25deg); }
  20%  { transform: translate(22px,-22px)  rotate(12deg);  }
  40%  { transform: translate(28px, 16px)  rotate(-8deg);  }
  60%  { transform: translate(-18px, 22px) rotate(18deg);  }
  80%  { transform: translate(-26px,-10px) rotate(-15deg); }
  100% { transform: translate(-28px,-18px) rotate(-25deg); }
}

.loading-dots {
  display: flex;
  gap: 10px;
}
.loading-dots span {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--c);
  animation: dotBounce 1.4s ease-in-out infinite;
}
.loading-dots span:nth-child(1) { animation-delay: 0s;     }
.loading-dots span:nth-child(2) { animation-delay: 0.15s;  }
.loading-dots span:nth-child(3) { animation-delay: 0.3s;   }
.loading-dots span:nth-child(4) { animation-delay: 0.45s;  }
.loading-dots span:nth-child(5) { animation-delay: 0.6s;   }
.loading-dots span:nth-child(6) { animation-delay: 0.75s;  }
@keyframes dotBounce {
  0%,80%,100% { transform: scale(1)   translateY(0);    opacity: 0.55; }
  40%         { transform: scale(1.5) translateY(-14px); opacity: 1;    }
}

.loading-text {
  font-family: var(--ff-brand);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--muted);
  text-align: center;
  padding: 0 20px;
  transition: opacity 0.4s;
}

@keyframes floatIcon {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-14px); }
}

/* ─── Canvas body (flex row: preview-stage + palette-sidebar) ────────────── */
.canvas-body {
  display: flex;
  flex: 1;
  min-height: 0;
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */

/* Tablet and below: stack palette under canvas */
@media (max-width: 640px) {
  .workspace {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .side-panel { display: none !important; } /* debug panel not useful on mobile */
}

/* Small phones */
@media (max-width: 480px) {
  .app { padding: 10px 10px 40px; }
  .search-bar { flex-wrap: wrap; gap: 6px; }
  .go-btn { flex: 1; min-width: 0; }
  .regen-btn { flex: 1; min-width: 0; }
  .canvas-actions { gap: 6px; padding: 8px 10px; flex-wrap: wrap; }
  .action-btn { font-size: .78rem; padding: 6px 12px; }
}

/* Very small phones */
@media (max-width: 360px) {
  .app { padding: 8px 8px 32px; }
}

/* ─── Coloring hint banner ───────────────────────────────────────────────── */
.coloring-hint {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 16px;
  background: linear-gradient(135deg, #f0f7ff, #f5f0ff);
  border-bottom: 1.5px solid rgba(124,77,255,.15);
  font-family: var(--ff-body);
  font-size: .88rem;
  font-weight: 700;
  color: var(--ink);
}
.coloring-hint[hidden] { display: none; }
.dismiss-hint-btn {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: .9rem;
  padding: 2px 6px;
  border-radius: 6px;
  flex-shrink: 0;
  transition: background .15s;
}
.dismiss-hint-btn:hover { background: rgba(0,0,0,.06); }

/* ─── Challenge strip ────────────────────────────────────────────────────── */
.challenge-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 16px;
  background: linear-gradient(135deg, #fff8e1, #fff3e0);
  border-top: 1.5px solid rgba(255,112,67,.2);
  font-family: var(--ff-body);
  font-size: .88rem;
  font-weight: 700;
  color: var(--ink);
}
.challenge-strip[hidden] { display: none; }
.challenge-strip-btn {
  font-family: var(--ff-brand);
  font-size: .88rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 50px;
  border: none;
  background: linear-gradient(135deg, var(--orange), var(--red));
  color: #fff;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: 0 3px 12px rgba(255,71,87,.3);
  transition: transform .15s, box-shadow .15s;
}
.challenge-strip-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(255,71,87,.4); }

/* ─── Empty state (improved) ─────────────────────────────────────────────── */
.empty-hint { opacity: .7; }
.empty-icon { font-size: 5rem; }
.empty-hint p { font-size: 1.1rem; }

/* ─── Share action button (prominent) ───────────────────────────────────── */
.share-action-btn {
  background: linear-gradient(135deg, var(--orange), var(--red)) !important;
  color: #fff !important;
  border-color: transparent !important;
  box-shadow: 0 3px 12px rgba(255,71,87,.3);
}
.share-action-btn:hover:not(:disabled) {
  border-color: transparent !important;
  color: #fff !important;
  background: linear-gradient(135deg, var(--orange), var(--red)) !important;
  box-shadow: 0 6px 20px rgba(255,71,87,.45) !important;
  transform: translateY(-2px) !important;
}