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

html,
body {
  height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background: #1a1a2e;
  color: #e8e8e8;
  display: flex;
  flex-direction: column;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: #16213e;
  border-bottom: 1px solid #2a2a4a;
  flex-shrink: 0;
  min-height: 48px;
}

.toolbar-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: #a8dadc;
  white-space: nowrap;
}

.btn {
  display: inline-block;
  padding: 6px 14px;
  font-size: 0.875rem;
  border: 1px solid #3a3a5c;
  border-radius: 4px;
  background: #2a2a4a;
  color: #e8e8e8;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.btn:hover {
  background: #3a3a5c;
  border-color: #4a4a6c;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn:focus-visible {
  outline: 2px solid #a8dadc;
  outline-offset: 2px;
}

.breadcrumb-item:focus-visible {
  outline: 2px solid #a8dadc;
  outline-offset: 1px;
}

.btn-lg {
  padding: 10px 22px;
  font-size: 0.95rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 2px;
  min-width: 0;
  flex: 1;
  overflow: hidden;
}

.breadcrumb-item {
  background: none;
  border: none;
  color: #888;
  font-size: 0.8rem;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 3px;
  white-space: nowrap;
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.breadcrumb-item:hover {
  color: #a8dadc;
  background: rgba(168, 218, 220, 0.08);
}

.breadcrumb-item.is-current {
  color: #e8e8e8;
  cursor: default;
  font-weight: 500;
}

.breadcrumb-item.is-current:hover {
  background: none;
}

.breadcrumb-sep {
  color: #555;
  font-size: 0.75rem;
  user-select: none;
}

.stats {
  margin-left: auto;
  font-size: 0.8rem;
  color: #888;
  white-space: nowrap;
  text-align: right;
}

.main {
  flex: 1;
  min-height: 0;
  position: relative;
  background: #12121f;
}

#treemap-canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

#treemap-canvas.is-folder-hover {
  cursor: pointer;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px;
  text-align: center;
}

.empty-state[hidden] {
  display: none;
}

.empty-state-title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 600;
  color: #a8dadc;
}

.empty-state-hint {
  margin: 0;
  max-width: 420px;
  font-size: 0.9rem;
  color: #666;
  line-height: 1.5;
}

.footer {
  flex-shrink: 0;
  min-height: 36px;
  padding: 6px 16px;
  background: #16213e;
  border-top: 1px solid #2a2a4a;
  display: flex;
  align-items: center;
  gap: 12px;
}

.progress-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 200px;
  flex-shrink: 0;
}

.progress-wrap[hidden] {
  display: none;
}

.progress-bar {
  width: 120px;
  height: 4px;
  background: #2a2a4a;
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  inset: 0;
  width: var(--progress, 0%);
  background: #a8dadc;
  border-radius: 2px;
  transition: width 0.15s;
}

.progress-text {
  font-size: 0.75rem;
  color: #888;
  white-space: nowrap;
}

.hover-info {
  flex: 1;
  min-width: 0;
  font-size: 0.8rem;
  color: #aaa;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}