/* 图纸主题（白图/蓝图/深色）、浮动工具条、缩放徽标、信息条 */
/* 视觉风格主题 */
#sheet.theme-paper #sheetViewport {
  background: #cbd5e1;
}
#sheet.theme-paper #sheetSvgWrapper {
  box-shadow: 0 10px 40px rgba(0,0,0,.35);
}

#sheet.theme-blueprint #sheetViewport {
  background: #06182c;
  background-image: 
    linear-gradient(rgba(14, 116, 144, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 116, 144, 0.15) 1px, transparent 1px);
  background-size: 24px 24px;
}
#sheet.theme-blueprint #sheetSvgWrapper {
  box-shadow: 0 0 40px rgba(14, 165, 233, 0.25);
  border: 1px solid rgba(56, 189, 248, 0.3);
}
#sheet.theme-blueprint .sheet-bg {
  fill: #0a2240 !important;
}
#sheet.theme-blueprint .sheet-border-outer,
#sheet.theme-blueprint .sheet-border-inner,
#sheet.theme-blueprint .sheet-title-line,
#sheet.theme-blueprint .sheet-meta-line {
  stroke: #38bdf8 !important;
}
#sheet.theme-blueprint .sheet-title-text {
  fill: #f0f9ff !important;
}
#sheet.theme-blueprint .sheet-note-text,
#sheet.theme-blueprint .sheet-scale-text,
#sheet.theme-blueprint .sheet-ver-text {
  fill: #bae6fd !important;
}
#sheet.theme-blueprint .sheet-axis,
#sheet.theme-blueprint .sheet-axis-label,
#sheet.theme-blueprint .sheet-dim-line,
#sheet.theme-blueprint .sheet-dim-ext,
#sheet.theme-blueprint .sheet-dim-text {
  stroke: #7dd3fc !important;
  fill: #7dd3fc !important;
}

#sheet.theme-dark #sheetViewport {
  background: #090b0e;
}
#sheet.theme-dark .sheet-bg {
  fill: #14171d !important;
}
#sheet.theme-dark .sheet-border-outer,
#sheet.theme-dark .sheet-border-inner,
#sheet.theme-dark .sheet-title-line,
#sheet.theme-dark .sheet-meta-line {
  stroke: #374151 !important;
}
#sheet.theme-dark .sheet-title-text {
  fill: #f3f4f6 !important;
}
#sheet.theme-dark .sheet-note-text,
#sheet.theme-dark .sheet-scale-text,
#sheet.theme-dark .sheet-ver-text {
  fill: #9ca3af !important;
}

/* 浮动工具条 */
#sheetFloatBar {
  position: absolute;
  right: 14px;
  top: 14px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  z-index: 25;
}
.sfb-btn {
  background: rgba(23, 26, 33, 0.88);
  backdrop-filter: blur(8px);
  color: var(--tx);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 11.5px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,.35);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  transition: all .15s ease;
}
.sfb-btn:hover {
  background: #1e3a66;
  border-color: var(--ac);
  color: #fff;
  transform: translateY(-1px);
}

/* 缩放指示徽标 */
#sheetZoomBadge {
  position: absolute;
  right: 14px;
  bottom: 12px;
  background: rgba(15, 17, 21, 0.82);
  backdrop-filter: blur(6px);
  border: 1px solid var(--line);
  color: var(--dim);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  z-index: 20;
}
#sheetZoomBadge:hover {
  color: var(--ac);
  border-color: var(--ac);
}

/* 信息条 */
#sheetInfoBar {
  position: absolute;
  left: 14px;
  bottom: 12px;
  max-width: 70%;
  background: rgba(15, 17, 21, 0.85);
  backdrop-filter: blur(6px);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 4px 10px;
  font-size: 11.5px;
  color: var(--dim);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 6px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
#sheetInfoBar b {
  color: var(--tx);
}
.sheet-info-sep {
  color: var(--line);
}