/* ========================================
   STICKERS MODULE
   ======================================== */

/* --- Interaction Canvas --- */
.stk-canvas-stack {
  position: relative;
  display: inline-block;
  line-height: 0;
}

.stk-canvas-stack canvas {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 48px - 48px);
  border-radius: 12px;
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.4);
}

.stk-canvas-stack .stk-base-canvas {
  position: relative;
  z-index: 1;
}

.stk-canvas-stack .stk-overlay-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: auto;
  cursor: default;
}

/* --- Sticker Panel --- */
.stk-panel {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-height: 100%;
  overflow: hidden;
}

.stk-panel-section {
  border-bottom: 1px solid var(--line);
}

.stk-panel-section:last-child {
  border-bottom: none;
}

.stk-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  cursor: pointer;
  user-select: none;
  transition: background 120ms ease;
}

.stk-section-header:hover {
  background: rgba(171, 255, 203, 0.04);
}

.stk-section-header span {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.stk-section-arrow {
  font-size: 0.6rem;
  color: var(--muted);
  transition: transform 200ms ease;
}

.stk-panel-section.collapsed .stk-section-arrow {
  transform: rotate(-90deg);
}

.stk-panel-section.collapsed .stk-section-body {
  display: none;
}

.stk-section-body {
  padding: 0 12px 12px;
}

/* --- Category Tabs --- */
.stk-category-tabs {
  display: flex;
  gap: 2px;
  padding: 4px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.stk-category-tabs::-webkit-scrollbar {
  display: none;
}

.stk-category-tab {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 8px;
  font-size: 0.65rem;
  font-weight: 600;
  background: transparent;
  color: var(--muted);
  border: 1px solid transparent;
  border-radius: 5px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 120ms ease;
}

.stk-category-tab:hover {
  background: rgba(171, 255, 203, 0.06);
  color: var(--text);
}

.stk-category-tab.active {
  background: rgba(171, 255, 203, 0.12);
  color: var(--accent);
  border-color: rgba(171, 255, 203, 0.2);
}

.stk-category-tab-emoji {
  font-size: 0.9rem;
  line-height: 1;
}

/* --- Search Input --- */
.stk-search-wrap {
  position: relative;
  margin-bottom: 8px;
}

.stk-search-input {
  width: 100%;
  padding: 7px 10px 7px 28px;
  font-size: 0.72rem;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  outline: none;
  transition: border-color 150ms ease;
}

.stk-search-input:focus {
  border-color: var(--accent);
}

.stk-search-input::placeholder {
  color: var(--muted);
  opacity: 0.6;
}

.stk-search-icon {
  position: absolute;
  left: 9px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.7rem;
  color: var(--muted);
  pointer-events: none;
}

/* --- Emoji / Sticker Grid --- */
.stk-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 2px;
  max-height: 180px;
  overflow-y: auto;
  padding: 2px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.stk-grid::-webkit-scrollbar {
  width: 4px;
}

.stk-grid::-webkit-scrollbar-track {
  background: transparent;
}

.stk-grid::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 2px;
}

.stk-grid-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  font-size: 1.4rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  transition: all 120ms ease;
  line-height: 1;
}

.stk-grid-btn:hover {
  background: rgba(171, 255, 203, 0.1);
  border-color: var(--line);
  transform: scale(1.12);
}

.stk-grid-btn:active {
  transform: scale(0.95);
}

/* SVG thumbnail buttons */
.stk-svg-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  max-height: 180px;
  overflow-y: auto;
  padding: 2px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.stk-svg-grid::-webkit-scrollbar {
  width: 4px;
}

.stk-svg-grid::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 2px;
}

.stk-svg-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  padding: 4px;
  transition: all 120ms ease;
  overflow: hidden;
}

.stk-svg-btn:hover {
  background: rgba(171, 255, 203, 0.08);
  border-color: var(--accent);
  transform: scale(1.05);
}

.stk-svg-btn:active {
  transform: scale(0.95);
}

.stk-svg-btn svg {
  width: 100%;
  height: 100%;
}

/* --- Upload Button --- */
.stk-upload-area {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stk-upload-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 10px;
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--bg-soft);
  border: 1px dashed var(--line-strong);
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
  transition: all 150ms ease;
}

.stk-upload-btn:hover {
  background: rgba(171, 255, 203, 0.06);
  border-color: var(--accent);
  color: var(--text);
}

.stk-upload-input {
  display: none;
}

.stk-my-stickers {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.stk-my-sticker-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  padding: 3px;
  transition: all 120ms ease;
  overflow: hidden;
  position: relative;
}

.stk-my-sticker-btn:hover {
  border-color: var(--accent);
}

.stk-my-sticker-btn img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.stk-my-sticker-delete {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--danger);
  color: #fff;
  border: none;
  font-size: 0.55rem;
  line-height: 16px;
  text-align: center;
  cursor: pointer;
  display: none;
  padding: 0;
}

.stk-my-sticker-btn:hover .stk-my-sticker-delete {
  display: block;
}

/* --- Layers Panel --- */
.stk-layers-panel {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-height: 240px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.stk-layers-panel::-webkit-scrollbar {
  width: 4px;
}

.stk-layers-panel::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 2px;
}

.stk-layer-empty {
  padding: 16px;
  text-align: center;
  font-size: 0.7rem;
  color: var(--muted);
  opacity: 0.6;
}

.stk-layer-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-bottom: 1px solid rgba(194, 212, 222, 0.06);
  cursor: pointer;
  transition: background 120ms ease;
  user-select: none;
}

.stk-layer-row:hover {
  background: rgba(171, 255, 203, 0.04);
}

.stk-layer-row.selected {
  background: rgba(171, 255, 203, 0.08);
}

.stk-layer-drag-handle {
  cursor: grab;
  font-size: 0.7rem;
  color: var(--muted);
  opacity: 0.5;
  padding: 0 2px;
}

.stk-layer-drag-handle:active {
  cursor: grabbing;
}

.stk-layer-preview {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-soft);
  border-radius: 4px;
  font-size: 1.1rem;
  overflow: hidden;
  flex-shrink: 0;
}

.stk-layer-preview img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.stk-layer-name {
  flex: 1;
  font-size: 0.68rem;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stk-layer-controls {
  display: flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
}

.stk-layer-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  border-radius: 3px;
  font-size: 0.65rem;
  padding: 0;
  transition: all 120ms ease;
}

.stk-layer-btn:hover {
  background: rgba(171, 255, 203, 0.1);
  color: var(--text);
}

.stk-layer-btn.stk-layer-btn-active {
  color: var(--accent);
}

.stk-layer-btn.stk-layer-btn-danger:hover {
  background: rgba(255, 117, 111, 0.15);
  color: var(--danger);
}

.stk-layer-opacity {
  width: 40px;
  padding: 2px 4px;
  font-size: 0.6rem;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--text);
  text-align: center;
  outline: none;
}

.stk-layer-opacity:focus {
  border-color: var(--accent);
}

/* --- Apply Button --- */
.stk-apply-row {
  display: flex;
  gap: 6px;
  padding: 10px 12px;
  border-top: 1px solid var(--line);
}

.stk-apply-btn {
  flex: 1;
  padding: 8px 12px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 150ms ease;
}

.stk-apply-btn-primary {
  background: var(--accent);
  color: var(--bg);
}

.stk-apply-btn-primary:hover {
  background: #c2ffd8;
  box-shadow: 0 0 12px var(--accent-glow);
}

.stk-apply-btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.stk-apply-btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
}

.stk-apply-btn-ghost:hover {
  background: rgba(171, 255, 203, 0.06);
  color: var(--text);
}

/* --- Sticker Count Warning --- */
.stk-count-warn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 0.65rem;
  color: #FFA726;
  background: rgba(255, 167, 38, 0.08);
}

.stk-count-warn.hidden {
  display: none;
}