*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-dark: #1a1a2e;
  --bg-mid: #16213e;
  --bg-panel: #0f3460;
  --accent: #e94560;
  --accent-hover: #ff6b81;
  --text: #eee;
  --text-muted: #8899aa;
  --border: #253a5e;
  --canvas-bg: #111827;
  --layer-hover: rgba(233, 69, 96, 0.1);
  --layer-active: rgba(233, 69, 96, 0.2);
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

#app {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 56px);
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
}

/* ── Toolbar ── */

#toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  height: 52px;
  background: var(--bg-mid);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 10;
  position: relative;
}

#toolbar h1 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent);
  text-transform: uppercase;
  user-select: none;
}

.toolbar-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.toolbar-controls button {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}

.toolbar-controls button:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--layer-hover);
}

.toolbar-controls button.active {
  color: var(--text);
  border-color: var(--accent);
  background: var(--accent);
}

#btn-add-image {
  color: var(--text) !important;
  background: var(--accent) !important;
  border-color: var(--accent) !important;
}

#btn-add-image:hover {
  background: var(--accent-hover) !important;
  border-color: var(--accent-hover) !important;
}

#zoom-level {
  font-size: 12px;
  color: var(--text-muted);
  min-width: 40px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.toolbar-sep {
  width: 1px;
  height: 24px;
  background: var(--border);
  margin: 0 6px;
}

/* ── Workspace ── */

#workspace {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Layer Panel ── */

#layer-panel {
  width: 280px;
  background: var(--bg-mid);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.panel-header {
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--border);
}

.panel-header h2 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}

#layer-list {
  list-style: none;
  flex: 1;
  overflow-y: auto;
  padding: 6px 0;
}

#layer-list::-webkit-scrollbar {
  width: 4px;
}

#layer-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

.layer-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  cursor: pointer;
  transition: background 0.1s;
  border-left: 3px solid transparent;
  user-select: none;
  position: relative;
}

.layer-item:hover {
  background: var(--layer-hover);
}

.layer-item.selected {
  background: var(--layer-active);
  border-left-color: var(--accent);
}

.layer-thumb {
  width: 36px;
  height: 36px;
  border-radius: 4px;
  object-fit: cover;
  background: var(--canvas-bg);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.layer-info {
  flex: 1;
  min-width: 0;
}

.layer-name {
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.layer-size {
  font-size: 11px;
  color: var(--text-muted);
}

.layer-actions {
  display: none;
  gap: 2px;
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-mid);
  padding: 2px 4px;
  border-radius: 4px;
  z-index: 1;
}

.layer-item:hover .layer-actions {
  display: flex;
}

.layer-item.selected .layer-actions {
  display: flex;
}

.layer-actions button {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.1s;
}

.layer-actions button:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.layer-actions button.btn-delete:hover {
  color: var(--accent);
}

.layer-actions button.hidden-layer {
  color: var(--accent);
  opacity: 1;
}

.panel-hint {
  padding: 20px 16px;
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}

/* ── HP Controls ── */

.layer-hp {
  display: flex;
  align-items: center;
  gap: 3px;
  margin-top: 2px;
}

.layer-hp-label {
  font-size: 10px;
  color: var(--accent);
  font-weight: 600;
  margin-right: 2px;
}

.hp-input {
  width: 34px;
  padding: 1px 2px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text);
  font-size: 11px;
  text-align: center;
  -moz-appearance: textfield;
}

.hp-input::-webkit-inner-spin-button,
.hp-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.hp-input:focus {
  outline: none;
  border-color: var(--accent);
}

.hp-input:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.layer-hp-sep {
  font-size: 10px;
  color: var(--text-muted);
}

/* ── Canvas ── */

#canvas-container {
  flex: 1;
  position: relative;
  background: var(--canvas-bg);
  overflow: hidden;
}

#konva-container {
  width: 100%;
  height: 100%;
}

/* ── Drop Overlay ── */

#drop-overlay {
  display: none;
  position: absolute;
  inset: 0;
  z-index: 100;
  background: rgba(15, 52, 96, 0.85);
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
}

#drop-overlay.active {
  display: flex;
}

.drop-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--accent);
  font-size: 18px;
  font-weight: 500;
  padding: 40px 60px;
  border: 2px dashed var(--accent);
  border-radius: 16px;
}

/* ── Layer drag reorder ── */

.layer-item.dragging {
  opacity: 0.4;
}

.layer-item.drag-over {
  border-top: 2px solid var(--accent);
}

/* ── Lock button ── */

.layer-actions button.locked-layer {
  color: var(--accent);
  opacity: 1;
}

.layer-item.is-locked .layer-name {
  opacity: 0.5;
}

/* ── Group headers ── */

.group-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.group-header:hover {
  color: var(--text);
}

.group-header-name {
  flex: 1;
}

.group-header button {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
}

.group-header button:hover {
  color: var(--text);
}

.group-header button.hidden-layer {
  color: var(--accent);
}

/* ── Group select dropdown ── */

.layer-group-select {
  width: 100%;
  padding: 1px 2px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text);
  font-size: 10px;
  margin-top: 2px;
}

/* ── Indented grouped layers ── */

.layer-item.grouped {
  padding-left: 20px;
}

/* ── Konva transformer override ── */

.konvajs-content {
  outline: none !important;
}

/* ── Save Progress Bar ── */

#save-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--border);
  display: none;
}

#save-progress.active {
  display: block;
}

#save-progress-fill {
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width 0.1s ease;
}

/* ── Fog of War panel item ── */

.fog-thumb {
  width: 36px;
  height: 36px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.85);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── Fog cursor ── */

#konva-container.fog-mode {
  cursor: crosshair;
}