/**
 * 本地 DICOM 浏览器 - 优雅极简设计样式
 * 适配 PC 与移动端 H5；阅片留白跟随外观，影像原始灰阶独立呈现。
 */

:root {
  --dd-bg: #f5f5f7;
  --dd-surface: #ffffff;
  --dd-surface-subtle: #fbfbfd;
  --dd-soft: #eeeeF0;
  --dd-text: #1d1d1f;
  --dd-muted: #86868b;
  --dd-line: #d2d2d7;
  --dd-accent: #0071e3;
  --dd-accent-hover: #0077ed;
  --dd-accent-subtle: rgba(0, 113, 227, 0.08);
  --dd-viewer-bg: #e8ebef;
  --dd-viewer-muted: #586271;
  --dd-image-shadow: 0 4px 18px rgba(25, 34, 46, 0.14);
  --dd-radius-outer: 20px;
  --dd-radius-inner: 12px;
  --dd-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  --dd-font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --dd-bg: #000000;
    --dd-surface: #161618;
    --dd-surface-subtle: #1c1c1e;
    --dd-soft: #2c2c2e;
    --dd-text: #f5f5f7;
    --dd-muted: #a1a1a6;
    --dd-line: #38383a;
    --dd-accent: #2997ff;
    --dd-accent-hover: #47a3ff;
    --dd-accent-subtle: rgba(41, 151, 255, 0.15);
    --dd-viewer-bg: #07090c;
    --dd-viewer-muted: #a1aebd;
    --dd-image-shadow: 0 0 40px rgba(0, 0, 0, 0.8);
    --dd-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  }
}

:root[data-theme="dark"] {
  --dd-bg: #000000;
  --dd-surface: #161618;
  --dd-surface-subtle: #1c1c1e;
  --dd-soft: #2c2c2e;
  --dd-text: #f5f5f7;
  --dd-muted: #a1a1a6;
  --dd-line: #38383a;
  --dd-accent: #2997ff;
  --dd-accent-hover: #47a3ff;
  --dd-accent-subtle: rgba(41, 151, 255, 0.15);
  --dd-viewer-bg: #07090c;
  --dd-viewer-muted: #a1aebd;
  --dd-image-shadow: 0 0 40px rgba(0, 0, 0, 0.8);
  --dd-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

:root[data-theme="light"] {
  --dd-bg: #f5f5f7;
  --dd-surface: #ffffff;
  --dd-surface-subtle: #fbfbfd;
  --dd-soft: #eeeeF0;
  --dd-text: #1d1d1f;
  --dd-muted: #86868b;
  --dd-line: #d2d2d7;
  --dd-accent: #0071e3;
  --dd-accent-hover: #0077ed;
  --dd-accent-subtle: rgba(0, 113, 227, 0.08);
  --dd-viewer-bg: #e8ebef;
  --dd-viewer-muted: #586271;
  --dd-image-shadow: 0 4px 18px rgba(25, 34, 46, 0.14);
  --dd-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

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

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  font-family: var(--dd-font);
  background: var(--dd-bg);
  color: var(--dd-text);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

[hidden] {
  display: none !important;
}

button, select, input {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  appearance: none;
  border: none;
  background: transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 0.18s ease, transform 0.1s ease, color 0.18s ease, border-color 0.18s ease;
}

button:active {
  transform: scale(0.97);
}

button:disabled {
  cursor: default;
  transition: none;
}

button:focus-visible, select:focus-visible, input:focus-visible, a:focus-visible {
  outline: 2px solid var(--dd-accent);
  outline-offset: 2px;
}

/* 主容器 */
.viewer-app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  width: 100vw;
  background: var(--dd-bg);
  position: relative;
  user-select: none;
}

/* 顶部 Header */
.viewer-header {
  --viewer-header-control-height: var(--header-control-size);
  --viewer-header-icon-width: var(--header-control-size);
  --viewer-header-control-radius: var(--header-control-radius);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
  background: var(--dd-surface);
  border-bottom: 1px solid var(--dd-line);
  z-index: 10;
  gap: 12px;
  flex-shrink: 0;
}



.viewer-header-main {
  display: flex;
  align-items: center;
  gap: 24px;
  flex: 0 0 auto;
}

.viewer-brand {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--dd-text);
}

.brand-logo {
  width: 32px;
  height: 32px;
  display: block;
  flex-shrink: 0;
}

.brand-logo img {
  display: block;
  width: 100%;
  height: 100%;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.3px;
}

.brand-tag {
  font-size: 11px;
  color: var(--dd-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.viewer-brand,
.header-actions {
  white-space: nowrap;
}

/* 下载入口与品牌同栏，另开页面以保留当前载入的本地影像。 */
.viewer-download-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  height: var(--viewer-header-control-height);
  min-height: var(--viewer-header-control-height);
  border-radius: var(--viewer-header-control-radius);
  color: var(--dd-accent);
  background: var(--dd-accent-subtle);
  border: 1px solid color-mix(in srgb, var(--dd-accent) 22%, transparent);
  font-size: 12px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.12s ease;
}

.viewer-download-icon {
  flex-shrink: 0;
  opacity: 0.85;
}

.viewer-download-arrow {
  font-size: 11px;
  opacity: 0.75;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.viewer-download-link:hover {
  color: var(--dd-accent-hover);
  background: color-mix(in srgb, var(--dd-accent) 18%, transparent);
  border-color: color-mix(in srgb, var(--dd-accent) 42%, transparent);
  text-decoration: none;
}

.viewer-download-link:hover .viewer-download-arrow {
  transform: translate(1px, -1px);
  opacity: 1;
}

.viewer-download-link:active {
  transform: scale(0.97);
}



.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 在顶部拥挤前收起辅助文字与外观选项，品牌和操作组不互相挤压。 */
@media (max-width: 1100px) {
  .viewer-header {
    padding-inline: 14px;
  }
  .viewer-header-main {
    gap: 16px;
  }
  .brand-tag {
    display: none;
  }
  .header-actions {
    gap: 6px;
  }
  #btn-open-folder span {
    display: none;
  }
  #btn-open-folder {
    width: var(--viewer-header-icon-width);
    padding: 0;
  }
}

.btn-primary {
  background: var(--dd-accent);
  color: #ffffff;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 10px;
  font-size: 13px;
  height: 34px;
}

.btn-primary:hover {
  background: var(--dd-accent-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--dd-text);
  font-weight: 500;
  padding: 7px 12px;
  border-radius: 10px;
  font-size: 13px;
  height: 34px;
}

.btn-ghost:hover {
  background: var(--dd-soft);
}

/* 顶部所有操作共用矩形倒角和高度，纯图标入口也保留横向宽度。 */
.viewer-header .btn-primary,
.viewer-header .btn-ghost {
  height: var(--viewer-header-control-height);
  min-height: var(--viewer-header-control-height);
  border-radius: var(--viewer-header-control-radius);
}
.viewer-header .btn-ghost {
  border: 1px solid var(--dd-line);
}

/* 主内容区 */
.viewer-body {
  display: flex;
  flex: 1;
  min-height: 0;
  position: relative;
  background: var(--dd-viewer-bg);
}

/* 桌面左侧侧边栏 */
.viewer-sidebar {
  width: clamp(200px, 22vw, 260px);
  background: var(--dd-surface);
  border-right: 1px solid var(--dd-line);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
  transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* 桌面左侧侧边栏头部：高度与右侧工具栏保持 60px 严格对齐共线 */
.sidebar-header {
  height: 60px;
  min-height: 60px;
  box-sizing: border-box;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-bottom: 1px solid var(--dd-line);
}

.patient-name {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--dd-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.study-meta {
  font-size: 11.5px;
  color: var(--dd-muted);
  line-height: 1.3;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.series-list-container {
  flex: 1;
  overflow-y: auto;
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* 序列卡片 */
.series-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--dd-radius-inner);
  background: var(--dd-surface-subtle);
  border: 1px solid var(--dd-line);
  text-align: left;
  width: 100%;
  cursor: pointer;
}

.series-card:hover {
  background: var(--dd-soft);
}

.series-card[aria-selected="true"] {
  background: var(--dd-accent-subtle);
  border-color: var(--dd-accent);
}


.series-thumb-canvas {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: #07090c;
  border: 1px solid rgba(255, 255, 255, 0.12);
  flex-shrink: 0;
  display: block;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}
.series-card[aria-selected="true"] .series-thumb-canvas {
  border-color: var(--dd-accent);
  box-shadow: 0 0 0 2px var(--dd-accent-subtle);
}

.series-badge {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--dd-soft);
  color: var(--dd-viewer-muted);
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
  border: 1px solid var(--dd-line);
}

.series-card[aria-selected="true"] .series-badge {
  background: var(--dd-accent);
  color: #ffffff;
  border-color: transparent;
}

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

.series-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--dd-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.series-detail {
  font-size: 11px;
  color: var(--dd-muted);
  margin-top: 2px;
}

/* 主视口工作区 */
.viewer-workspace {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
  background: var(--dd-viewer-bg);
  container: viewer-workspace / inline-size;
}

.viewer-context-bar { flex-shrink: 0; min-width: 0; }
.viewer-bottom-controls { flex-shrink: 0; min-width: 0; background: var(--dd-surface); }

/* 移动端顶栏序列切换触发条 (PC 隐藏) */
.mobile-series-bar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: rgba(22, 22, 24, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: #f5f5f7;
  font-size: 13px;
  z-index: 5;
}

.btn-mobile-series {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.12);
  padding: 6px 12px;
  border-radius: 8px;
  color: #f5f5f7;
  font-size: 12px;
}

/* 核心画布视口 */
.viewport-canvas-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--dd-viewer-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: pan-y;
}

.viewport-canvas-container.has-study {
  touch-action: none;
}

canvas#dicom-canvas {
  display: block;
  flex-shrink: 0;
  transform-origin: center center;
  box-shadow: var(--dd-image-shadow);
}

/* 四角 DICOM 悬浮信息标注 (Overlays) */
.viewport-overlays {
  position: absolute;
  inset: 0;
  pointer-events: none;
  padding: 14px 18px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  color: rgba(255, 255, 255, 0.85);
  font-size: 11px;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
}

/* 只托住实际文字，浅色留白或放大后的亮像素上仍能辨认标注。 */
.viewport-overlays > div:has(> div:not(:empty)),
.orientation-mark:not([hidden]):not(:empty) {
  padding: 2px 5px;
  border-radius: 4px;
  background: rgba(7, 9, 12, 0.68);
  color: #ffffff;
}

.overlay-top-left {
  grid-column: 1;
  grid-row: 1;
  justify-self: start;
  align-self: start;
}

.overlay-top-right {
  grid-column: 2;
  grid-row: 1;
  justify-self: end;
  align-self: start;
  text-align: right;
}

.overlay-bottom-left {
  grid-column: 1;
  grid-row: 2;
  justify-self: start;
  align-self: end;
}

.overlay-bottom-right {
  grid-column: 2;
  grid-row: 2;
  justify-self: end;
  align-self: end;
  text-align: right;
}

/* 空间方位标注 A / P / L / R */
.orientation-mark {
  position: absolute;
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
  font-weight: 600;
  pointer-events: none;
}

.orient-top { top: 12px; left: 50%; transform: translateX(-50%); }
.orient-bottom { bottom: 12px; left: 50%; transform: translateX(-50%); }
.orient-left { left: 14px; top: 50%; transform: translateY(-50%); }
.orient-right { right: 14px; top: 50%; transform: translateY(-50%); }

/* 空白引导状态 */
.empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 32px 24px;
  text-align: center;
  background: var(--dd-surface);
  color: var(--dd-text);
  z-index: 4;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.empty-content {
  text-align: center;
  flex: 0 0 auto;
  width: min(100%, 480px);
  margin-block: auto;
}

.empty-icon {
  margin-inline: auto;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--dd-accent-subtle);
  color: var(--dd-accent);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
}

.empty-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.5px;
  line-height: 1.4;
  margin-bottom: 10px;
}

.empty-subtitle {
  display: block;
  margin-top: 10px;
  letter-spacing: normal;
  font-size: 14px;
  line-height: 1.6;
  font-weight: 500;
  margin-bottom: 10px;
}

.empty-desc {
  font-size: 14px;
  color: var(--dd-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

.empty-actions {
  justify-content: center;
  display: flex;
  gap: 10px;
  align-items: center;
}

.empty-actions button {
  min-height: 40px;
  padding-inline: 16px;
  font-size: 13px;
  white-space: nowrap;
}

.empty-actions .btn-ghost {
  border: 1px solid var(--dd-line);
}

.empty-links {
  justify-content: center;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 22px;
  font-size: 12.5px;
  line-height: 1.6;
}

/* 空状态辅助链接：纯文字高亮呈现，保持视觉醒目与通透 */
.empty-links a {
  color: var(--dd-accent);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s ease;
}

.empty-links a:hover {
  color: var(--dd-accent-hover);
  text-decoration: underline;
}

.empty-state a {
  color: var(--dd-muted);
  text-decoration: none;
}

.empty-state a:hover {
  color: var(--dd-accent);
}

/* 切片滑动条区域 */
.slice-control-bar {
  padding: 8px 18px;
  background: var(--dd-surface);
  border-top: 1px solid var(--dd-line);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn-nav-slice {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--dd-soft);
  color: var(--dd-text);
  font-size: 14px;
  flex-shrink: 0;
}

.btn-nav-slice:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

input[type="range"].slice-slider {
  flex: 1;
  min-width: 0;
  height: 6px;
  -webkit-appearance: none;
  background: var(--dd-soft);
  border-radius: 3px;
  outline: none;
  accent-color: var(--dd-accent);
  cursor: pointer;
}

input[type="range"].slice-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--dd-accent);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
  cursor: pointer;
}

/* 信息栏右侧的阅片工具组 */
.viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0;
  margin-left: auto;
  max-width: 100%;
  min-width: 0;
  background: transparent;
  gap: 6px;
  flex-wrap: wrap;
  flex-shrink: 1;
}

.tool-button {
  padding: 6px 14px;
  border-radius: 10px;
  font-size: 13px;
  color: var(--dd-text);
  background: var(--dd-surface-subtle);
  border: 1px solid var(--dd-line);
  min-height: 34px;
}

.tool-button:hover {
  background: var(--dd-soft);
}

.tool-button[aria-pressed="true"] {
  background: var(--dd-accent-subtle);
  color: var(--dd-accent);
  border-color: var(--dd-accent);
}

.tool-button:disabled {
  color: var(--dd-muted);
  background: var(--dd-surface-subtle);
  border-color: var(--dd-line);
  cursor: default;
}

/* 窗宽窗位预设横向条 */
.window-preset-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--dd-surface-subtle);
  border-top: 1px solid var(--dd-line);
  flex-wrap: wrap;
  flex-shrink: 0;
}

.btn-preset {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 8px;
  background: var(--dd-soft);
  color: var(--dd-text);
}

.btn-preset[aria-pressed="true"] {
  background: var(--dd-accent);
  color: #ffffff;
}

/* 移动端抽屉遮罩与面板 */
.mobile-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 50;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: opacity 0.2s ease;
}

.mobile-drawer {
  background: var(--dd-surface);
  border-top-left-radius: 24px;
  border-top-right-radius: 24px;
  max-height: 75vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.25);
  animation: drawerSlideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes drawerSlideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.drawer-header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--dd-line);
}

.drawer-title {
  font-size: 16px;
  font-weight: 600;
}

.btn-drawer-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--dd-soft);
  font-size: 16px;
}

/* 全屏拖拽提示遮罩 */
.drop-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 113, 227, 0.15);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 4px dashed var(--dd-accent);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--dd-text);
  pointer-events: none;
  animation: fadeIn 0.15s ease-out;
}

.drop-overlay-title {
  font-size: 24px;
  font-weight: 600;
  margin-top: 12px;
}

/* 轻提示 Toast */
.viewer-toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--dd-text);
  color: var(--dd-surface);
  padding: 10px 18px;
  border-radius: 12px;
  font-size: 13px;
  z-index: 120;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  animation: toastIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  max-width: 90vw;
  text-align: center;
}

@keyframes toastIn {
  from { opacity: 0; transform: translate(-50%, 10px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}


.tool-text-short {
  display: none;
}

/* 中等宽度保留序列栏，收短重复工具文案，避免头尾挤占查看区。 */
@media (min-width: 769px) and (max-width: 1000px) {
  .viewer-toolbar .tool-text-full,
  .viewer-workspace .display-controls-title {
    display: none;
  }
  .viewer-workspace .display-segments {
    flex-shrink: 0;
  }
  .viewer-toolbar .tool-text-short {
    display: inline;
  }
  .viewer-toolbar {
    flex-wrap: wrap;
  }
  .viewer-toolbar .tool-button {
    gap: 6px;
    padding-inline: 10px;
    font-size: 12px;
    white-space: nowrap;
  }
}

/* 矮屏保留内容滚动，不让工具栏压到只剩一条视口。 */
@media (max-width: 1000px) and (max-height: 500px) and (orientation: landscape) {
  .viewer-workspace .display-controls {
    min-height: 44px;
    padding-block: 4px;
  }
  .slice-control-bar {
    padding-block: 4px;
  }
  .slice-control-bar .btn-nav-slice {
    height: 32px;
    width: 32px;
  }
  .viewer-workspace .viewer-toolbar {
    padding-block: 0;
  }
  .viewer-workspace .empty-state {
    padding: 12px 24px;
  }
  /* 横向空间可用时展开引导文案，让低矮窗口首屏仍能直接打开文件。 */
  .empty-content {
    width: min(100%, 560px);
  }
  .empty-subtitle {
    margin-top: 4px;
    margin-bottom: 0;
    font-size: 12px;
  }
  .empty-icon {
  margin-inline: auto;
    display: none;
  }
  .empty-content .empty-title {
    font-size: 18px;
    line-height: 1.3;
    margin-bottom: 4px;
  }
  .empty-content .empty-desc {
    font-size: 12px;
    line-height: 1.5;
    margin-bottom: 8px;
  }
  .empty-links {
    margin-top: 8px;
  }
}

@media (max-width: 768px), (max-width: 1000px) and (max-height: 500px) and (pointer: coarse) {
  .desktop-only {
    display: none !important;
  }
  .btn-primary {
    height: 36px;
    padding: 6px 12px;
    font-size: 12px;
    white-space: nowrap;
  }
}


@media (max-width: 768px), (max-width: 1000px) and (max-height: 500px) and (pointer: coarse) {
  .viewer-header {
    padding: 8px 10px;
    gap: 6px;
  }
  .viewer-header-main {
    gap: 12px;
  }
  .viewer-brand {
    gap: 6px;
  }
  .brand-logo {
    width: 28px;
    height: 28px;
  }
  .brand-title {
    font-size: 13px;
  }
  .header-actions {
    gap: 4px;
  }
  .btn-primary {
    height: 32px !important;
    padding: 4px 8px !important;
    font-size: 11px !important;
  }
  .empty-state {
    padding: 24px;
  }
  .empty-title {
    font-size: 20px;
  }
  .empty-desc {
    font-size: 13px;
  }
  .empty-actions .btn-primary {
    height: 40px !important;
    padding: 0 16px !important;
    font-size: 13px !important;
  }
}

@media (max-width: 350px) {
  .viewer-header-main {
    gap: 6px;
  }
  .viewer-download-link {
    gap: 3px;
    font-size: 11px;
  }
}

/* 响应式断点控制：移动端 H5 优化 */
@media (max-width: 768px), (max-width: 1000px) and (max-height: 500px) and (pointer: coarse) {
  .viewer-sidebar {
    display: none; /* 手机端隐藏侧边栏，改用顶部抽屉 */
  }
  .mobile-series-bar {
    display: flex;
  }
  .btn-primary, .btn-ghost {
    height: 38px;
    padding: 6px 12px;
    font-size: 13px;
  }
  .slice-control-bar {
    padding: 8px 12px;
  }
  .btn-nav-slice {
    width: 44px;
    height: 44px; /* 符合苹果移动端触控标准 */
    font-size: 16px;
  }
  .btn-preset {
    min-height: 36px;
    padding: 6px 12px;
    font-size: 13px;
  }
}

/* 手机两行各自占满可用宽度，账户靠左，常用操作靠右。 */
@media (max-width: 480px) {
  .viewer-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }
  .viewer-header-main,
  .viewer-header > .header-actions {
    justify-content: space-between;
    min-width: 0;
  }
  .viewer-header .viewer-account {
    margin-right: auto;
  }
}

/* 打印与另存为 PDF 排版样式 */
@media print {
  body, .viewer-app {
    background: #ffffff !important;
    color: #000000 !important;
    height: auto !important;
    overflow: visible !important;
  }
  .viewer-header,
  .viewer-sidebar,
  .slice-control-bar,
  .viewer-toolbar,
  .window-preset-bar,
  .mobile-series-bar,
  .drop-overlay,
  .viewer-toast {
    display: none !important;
  }
  .viewer-body, .viewer-workspace {
    background: #ffffff !important;
    height: auto !important;
  }
  .viewport-canvas-container {
    background: #000000 !important;
    max-width: 600px;
    margin: 20px auto;
    border-radius: 8px;
    box-shadow: none !important;
  }
  canvas#dicom-canvas {
    box-shadow: none !important;
  }
}

/* 左侧信息叠加与详情，右侧整组阅片工具；空间不足时按组换行。 */
.display-controls {
  position: relative;
  z-index: 6;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  flex-shrink: 0;
  min-height: 60px;
  padding: 8px 20px;
  background: var(--dd-surface);
  color: var(--dd-text);
  border-bottom: 1px solid var(--dd-line);
  font-size: 12px;
}
.display-control-group { display: flex; align-items: center; gap: 10px; min-width: 0; }
.display-information-group { flex-wrap: wrap; flex-shrink: 1; max-width: 100%; }
.display-rendering-group { margin-left: 0; }
.display-controls-title { font-weight: 600; letter-spacing: .02em; }
.display-segments {
  display: flex;
  flex-shrink: 0;
  gap: 2px;
  padding: 3px;
  border: 0;
  border-radius: 10px;
  background: var(--dd-soft);
  min-width: 0;
}
.display-segments button {
  display: grid;
  place-items: center;
  min-width: 54px;
  min-height: 30px;
  padding: 0 12px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--dd-text);
  font: inherit;
  cursor: pointer;
  opacity: .7;
}
.display-segments button[aria-pressed="true"] {
  background: var(--dd-surface);
  color: var(--dd-text);
  font-weight: 600;
  opacity: 1;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .12);
}
.display-segments button:disabled { opacity: .45; cursor: default; }
.display-segments button:focus-visible { outline: 2px solid var(--dd-accent); outline-offset: 2px; }
/* 每角限制在自身列内；长识别字段省略，不把多行文本延伸到图像中央。 */
.viewport-overlays { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 40px; padding: 18px 20px; line-height: 1.65; }
.viewport-overlays > div { min-width: 0; max-width: 100%; }
.viewport-overlays > div > div { white-space: pre; overflow: hidden; text-overflow: ellipsis; }
#overlay-patient { color: rgba(255, 255, 255, .8); }
#overlay-series { color: rgba(255, 255, 255, .75); }
.orientation-mark[hidden], .viewport-overlays[hidden] { display: none; }
@media (max-width: 768px), (max-width: 1000px) and (max-height: 500px) and (pointer: coarse) {
  .display-controls { padding: 4px 12px; gap: 12px; min-height: 56px; }
  .display-controls-title { display: none; }
  .display-segments { padding: 2px; }
  .display-segments button { min-width: 44px; min-height: 44px; padding: 0 8px; }
  .mobile-series-bar { background: var(--dd-surface-subtle); color: var(--dd-text); border-bottom-color: var(--dd-line); backdrop-filter: none; }
  .btn-mobile-series { background: transparent; color: var(--dd-text); padding: 4px 0; min-height: 32px; font-weight: 500; }
  .viewport-overlays { padding: 16px 14px; column-gap: 28px; font-size: 11px; }
}
@media (max-width: 1100px) {
  .display-controls-title { display: none; }
}
@media (max-width: 350px) {
  .display-controls { gap: 8px; padding-inline: 8px; }
  .display-segments button { min-width: 40px; padding-inline: 6px; }
}
@media print { .display-controls { display: none; } }

/* 详细标签按需展开；四角保持常用信息，长值只在可滚动详情中换行。 */
.btn-study-details { flex-shrink: 0; border: 1px solid var(--dd-line); border-radius: 8px; padding: 7px 12px; min-height: 36px; background: var(--dd-surface); color: var(--dd-text); font: inherit; cursor: pointer; }
.btn-study-details:disabled { opacity: .45; cursor: default; }
.study-details-dialog { margin: auto; padding: 0; width: min(760px, calc(100vw - 24px)); max-height: min(900px, 92dvh); border: 1px solid var(--dd-line); border-radius: 18px; color: var(--dd-text); background: var(--dd-surface); box-shadow: 0 24px 80px rgba(0, 0, 0, .25); }
.study-details-dialog[open] { display: flex; flex-direction: column; }
.study-details-dialog::backdrop { background: rgba(0, 0, 0, .45); }
.study-details-heading { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px 12px; flex-shrink: 0; }
.study-details-heading h2 { font-size: 20px; margin: 0 0 4px; }
.study-details-heading p { margin: 0; font-size: 12px; color: var(--dd-muted); }
.study-details-dialog button { color: var(--dd-text); background: var(--dd-soft); border: 1px solid var(--dd-line); border-radius: 8px; min-height: 40px; padding: 8px 12px; cursor: pointer; }
#close-study-details { font-size: 24px; width: 40px; padding: 0; }
.study-details-controls { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: flex-end; padding: 0 24px 12px; border-bottom: 1px solid var(--dd-line); font-size: 12px; flex-shrink: 0; }
.study-details-body { overflow-y: auto; overscroll-behavior: contain; padding: 18px 24px 24px; min-height: 0; }
#study-details-content section { padding-block: 12px; border-top: 1px solid var(--dd-line); }
#study-details-content h3 { margin: 0 0 14px; font-size: 14px; }
#study-details-content dl { display: grid; grid-template-columns: 185px minmax(0, 1fr); gap: 10px 16px; font-size: 13px; line-height: 1.6; margin: 0; }
#study-details-content dt { color: var(--dd-muted); }
#study-details-content dd { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; min-width: 0; user-select: text; }
.study-details-dialog button:focus-visible, .btn-study-details:focus-visible { outline: 2px solid var(--dd-accent); outline-offset: 2px; }
@media (max-width: 768px), (max-width: 1000px) and (max-height: 500px) and (pointer: coarse) {
  .display-controls { gap: 8px; }
  .btn-study-details { padding-inline: 8px; min-height: 44px; }
  .study-details-heading { padding: 16px 16px 10px; }
  .study-details-controls { padding-inline: 16px; }
  .study-details-body { padding: 16px; }
  #study-details-content dl { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  #study-details-content dd { margin-bottom: 10px; }
}
@media (max-width: 350px) {
  .display-controls { gap: 6px; }
  .display-segments button { min-width: 36px; padding-inline: 4px; }
  .btn-study-details { padding-inline: 7px; }
}

/* 载入进度：支持中央大卡片与底部左侧微型胶囊双态无缝切换 */
.viewer-load-progress {
  position: absolute;
  inset: 0;
  z-index: 25;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(10, 12, 16, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all .25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 展开态大卡片 */
.loading-card {
  position: relative;
  width: min(100%, 360px);
  padding: 24px 22px 18px;
  border: 1px solid var(--dd-line);
  border-radius: 20px;
  background: var(--dd-surface);
  box-shadow: 0 16px 40px rgba(0, 0, 0, .55), 0 4px 12px rgba(0, 0, 0, .3);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: viewer-card-pop .25s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn-minimize-load {
  position: absolute;
  top: 12px;
  right: 12px;
  min-height: 26px !important;
  padding: 0 8px !important;
  border: 1px solid var(--dd-line);
  border-radius: 6px;
  background: var(--dd-soft);
  color: var(--dd-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px !important;
  transition: all .15s ease;
}
.btn-minimize-load:hover {
  background: var(--dd-accent-subtle);
  color: var(--dd-text);
  border-color: var(--dd-accent);
}
.loading-visual {
  position: relative;
  width: 56px;
  height: 56px;
  margin: 0 auto 4px;
  display: grid;
  place-items: center;
}
.loading-orbit {
  position: absolute;
  inset: 0;
  border: 3px solid var(--dd-accent-subtle);
  border-top-color: var(--dd-accent);
  border-right-color: var(--dd-accent);
  border-radius: 50%;
  animation: viewer-loading-turn 1.4s linear infinite;
}
.loading-orbit-inner {
  inset: 6px;
  border-width: 1.5px;
  border-top-color: transparent;
  border-right-color: var(--dd-muted);
  animation-duration: 2s;
  animation-direction: reverse;
  opacity: .5;
}
.loading-percent {
  color: var(--dd-accent);
  font-size: 15px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.5px;
}
.loading-eyebrow {
  display: block;
  color: var(--dd-muted);
  font-size: 11px;
  letter-spacing: 1.5px;
}
.loading-card h2 {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
  line-height: 1.4;
  color: var(--dd-text);
}
.loading-count {
  min-height: 18px;
  margin: 0;
  color: var(--dd-muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.viewer-load-progress progress {
  display: block;
  width: 100%;
  height: 5px;
  border: 0;
  border-radius: 999px;
  overflow: hidden;
  accent-color: var(--dd-accent);
  background: var(--dd-soft);
  margin: 4px 0;
}
.viewer-load-progress progress::-webkit-progress-bar { background: var(--dd-soft); border-radius: 999px; }
.viewer-load-progress progress::-webkit-progress-value { background: var(--dd-accent); border-radius: 999px; transition: width .15s ease; }
.viewer-load-progress progress::-moz-progress-bar { background: var(--dd-accent); border-radius: 999px; }
.loading-summary {
  color: var(--dd-muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  margin: 0;
  line-height: 1.4;
}
.loading-actions-row {
  display: flex;
  gap: 10px;
  width: 100%;
  margin-top: 4px;
}
.loading-actions-row button {
  flex: 1;
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid var(--dd-line);
  border-radius: 8px;
  background: var(--dd-soft);
  color: var(--dd-text);
  font-size: 12px;
  cursor: pointer;
  transition: all .15s ease;
}
.loading-actions-row button:hover {
  background: var(--dd-accent-subtle);
  border-color: var(--dd-accent);
}
.loading-local-note {
  display: block;
  color: var(--dd-muted);
  font-size: 11px;
  margin-top: 2px;
}

/* === 最小化到底部左侧的微型浮动胶囊状态 (.is-minimized) === */
.viewer-load-progress.is-minimized {
  inset: auto auto 20px 16px;
  padding: 0;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  pointer-events: none;
  animation: viewer-fade-in .2s ease-out;
}
.viewer-load-progress.is-minimized .loading-card {
  pointer-events: auto;
  cursor: pointer;
  width: auto;
  min-width: 260px;
  max-width: 330px;
  padding: 8px 12px;
  border-radius: 18px;
  background: rgba(18, 20, 26, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .5), 0 2px 6px rgba(0, 0, 0, .3);
  flex-direction: row;
  align-items: center;
  gap: 8px;
  animation: viewer-capsule-pop .2s cubic-bezier(0.16, 1, 0.3, 1);
  transition: transform .15s ease, box-shadow .15s ease;
}
.viewer-load-progress.is-minimized .loading-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, .65), 0 3px 8px rgba(0, 0, 0, .4);
}
.viewer-load-progress.is-minimized .btn-minimize-load {
  display: none;
}
.viewer-load-progress.is-minimized .loading-eyebrow,
.viewer-load-progress.is-minimized .loading-local-note,
.viewer-load-progress.is-minimized .loading-actions-row {
  display: none;
}
.viewer-load-progress.is-minimized .loading-visual {
  width: 16px;
  height: 16px;
  margin: 0;
  flex-shrink: 0;
}
.viewer-load-progress.is-minimized .loading-orbit {
  border-width: 2px;
}
.viewer-load-progress.is-minimized .loading-orbit-inner {
  inset: 2px;
  border-width: 1px;
}
.viewer-load-progress.is-minimized .loading-percent {
  display: none;
}
.viewer-load-progress.is-minimized .loading-card h2 {
  font-size: 12px;
  font-weight: 500;
  margin: 0;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}
.viewer-load-progress.is-minimized .loading-count {
  display: none;
}
.viewer-load-progress.is-minimized progress {
  width: 50px;
  height: 3px;
  margin: 0;
  flex-shrink: 0;
}
.viewer-load-progress.is-minimized .loading-summary {
  display: none;
}
.viewer-load-progress.is-minimized .capsule-expand-hint {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  color: var(--dd-accent);
  flex-shrink: 0;
  margin-left: 2px;
}
.capsule-expand-hint {
  display: none;
}

/* 载入时不强制隐藏视口画布，已有图像与叠加层可即时阅片与交互 */
.viewport-canvas-container.is-loading:not(.has-study) #dicom-canvas,
.viewport-canvas-container.is-loading:not(.has-study) .viewport-overlays,
.viewport-canvas-container.is-loading:not(.has-study) .orientation-mark { visibility: hidden; }

@keyframes viewer-fade-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
@keyframes viewer-card-pop { from { opacity: 0; transform: scale(.95); } to { opacity: 1; transform: scale(1); } }
@keyframes viewer-capsule-pop { from { opacity: 0; transform: translateY(8px) scale(.96); } to { opacity: 1; transform: translateY(0) scale(1); } }

.series-card.is-pending:disabled { cursor: progress; opacity: 1; background: var(--dd-surface-subtle); border-color: var(--dd-line); color: var(--dd-text); }
.series-card.is-pending .series-thumb-canvas { display: grid; place-items: center; color: var(--dd-muted); background: var(--dd-accent-subtle); font-size: 12px; border-radius: 8px; }
.series-card.is-pending .series-title { color: var(--dd-text); }
.series-card.is-pending .series-detail { font-variant-numeric: tabular-nums; }
.viewer-frame-progress { position: absolute; z-index: 5; left: 50%; top: 50%; transform: translate(-50%, -50%); display: flex; gap: 10px; align-items: center; padding: 12px 16px; border: 1px solid var(--dd-line); border-radius: 12px; background: var(--dd-surface); color: var(--dd-text); box-shadow: var(--dd-shadow); font-size: 12px; pointer-events: none; }
.frame-spinner { width: 15px; height: 15px; border: 2px solid var(--dd-line); border-top-color: var(--dd-accent); border-radius: 50%; animation: viewer-loading-turn .9s linear infinite; }
@keyframes viewer-loading-turn { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .loading-orbit, .frame-spinner, .mobile-drawer { animation: none; }
  .viewer-load-progress progress:indeterminate { visibility: hidden; }
  .viewer-load-progress progress::-webkit-progress-value { transition: none; }
}
.study-details-controls .select-menu-control { min-width: 180px; margin-right: auto; }
@media (max-width: 768px), (max-width: 1000px) and (max-height: 500px) and (pointer: coarse) {
  .viewer-load-progress { padding: 16px; }
  .loading-card { padding: 26px 22px 20px; }
  .study-details-controls .select-menu-control { min-width: 150px; }
}
@media (max-height: 500px) {
  .loading-card { padding: 18px 22px; }
  .loading-visual { width: 60px; height: 60px; margin-bottom: 12px; }
  .loading-summary { margin-block: 10px; }
  .loading-local-note { margin-top: 10px; }
}



/* 显示方式、候选和手调收进同一个入口，两个弹层都跟随入口定位。 */
.btn-display-menu { display: inline-flex; align-items: center; justify-content: center; gap: 6px; flex-shrink: 0; min-height: 36px; padding: 7px 10px; border: 1px solid var(--dd-line); border-radius: 8px; background: var(--dd-surface); color: var(--dd-text); font: inherit; white-space: nowrap; cursor: pointer; }
.btn-display-menu:disabled { opacity: .45; cursor: default; }
.btn-display-menu[aria-expanded="true"] { border-color: var(--dd-accent); background: var(--dd-accent-subtle); }
.btn-display-menu svg { flex-shrink: 0; color: var(--dd-muted); }
.btn-display-menu .display-menu-icon { color: inherit; }
.display-menu-label-compact { display: none; }
.display-menu { position: fixed; z-index: 8; width: min(224px, calc(100vw - 16px)); max-height: min(560px, calc(100dvh - 16px)); overflow-y: auto; overscroll-behavior: contain; padding: 6px; border: 1px solid var(--dd-line); border-radius: 12px; background: var(--dd-surface); color: var(--dd-text); box-shadow: 0 10px 32px rgba(0, 0, 0, .18); }
.display-menu[hidden], .display-menu [hidden] { display: none; }
.display-menu-item { display: flex; align-items: center; justify-content: space-between; gap: 12px; width: 100%; min-height: 36px; padding: 8px 10px; border: 0; border-radius: 7px; background: transparent; color: var(--dd-text); font: inherit; text-align: left; white-space: nowrap; cursor: pointer; }
.display-menu-item:hover:not(:disabled), .display-menu-item:focus-visible { background: var(--dd-accent-subtle); color: var(--dd-accent); }
.display-menu-item[aria-checked="true"] { color: var(--dd-accent); font-weight: 600; }
.display-menu-item[aria-checked="true"]::after { content: '✓'; font-size: 12px; }
.display-menu-item:disabled { opacity: .4; cursor: default; }
.display-menu hr { height: 1px; margin: 5px 4px; border: 0; background: var(--dd-line); }
.display-menu-heading { margin: 6px 10px 3px; color: var(--dd-muted); font-size: 11px; line-height: 1.6; }
.display-adjust-panel { position: fixed; z-index: 8; width: min(440px, calc(100vw - 16px)); max-height: min(740px, calc(100dvh - 16px)); overflow-y: auto; overscroll-behavior: contain; padding: 20px; border: 1px solid var(--dd-line); border-radius: 18px; background: var(--dd-surface); color: var(--dd-text); box-shadow: 0 14px 50px rgba(0, 0, 0, .22); font-size: 12px; line-height: 1.5; }
.display-adjust-panel[hidden], .display-adjust-panel [hidden] { display: none; }
.display-adjust-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.display-adjust-heading h2 { margin: 0; font-size: 18px; line-height: 1.4; }
.display-adjust-heading p { margin: 3px 0 0; font-size: 11px; color: var(--dd-muted); }
.display-adjust-panel button { min-height: 36px; padding: 7px 11px; border: 1px solid var(--dd-line); border-radius: 8px; background: var(--dd-soft); color: var(--dd-text); font: inherit; cursor: pointer; }
.display-adjust-panel button:hover { border-color: var(--dd-accent); }
.display-adjust-panel button:disabled { opacity: .45; cursor: default; }
.display-adjust-panel .display-adjust-close { width: 32px; min-height: 32px; padding: 0; font-size: 22px; line-height: 1; background: transparent; }
.display-adjust-notice { margin: 10px 0 12px; color: var(--dd-muted); }
.display-adjust-panel button[aria-pressed="true"] { border-color: var(--dd-accent); background: var(--dd-accent-subtle); color: var(--dd-accent); }
.display-adjust-panel h3 { margin: 0; font-size: 12px; font-weight: 600; }
.display-candidates-section { padding-top: 18px; }
.display-candidates-section > p { margin: 4px 0 10px; color: var(--dd-muted); font-size: 11px; }
.display-candidates { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.display-adjust-panel .display-candidate { display: flex; flex-direction: column; align-items: stretch; overflow: hidden; padding: 3px; border-radius: 10px; min-width: 0; }
.display-candidate canvas { display: block; width: 100%; aspect-ratio: 3 / 2; height: auto; background: #07090c; border-radius: 6px; }
.display-candidate span { padding: 6px 2px 4px; font-size: 11px; white-space: nowrap; }
.display-window-form { margin-top: 12px; }
.display-adjust-section-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.display-adjust-panel .display-adjust-section-heading button { min-height: 28px; padding: 4px 8px; font-size: 11px; background: transparent; }
.display-window-fields { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto; align-items: end; gap: 8px; }
.display-window-fields label { display: grid; gap: 5px; color: var(--dd-muted); font-size: 11px; }
.display-adjust-panel input[type="text"], .display-adjust-panel input[type="number"] { width: 100%; min-width: 0; min-height: 36px; padding: 7px 9px; border: 1px solid var(--dd-line); border-radius: 8px; background: var(--dd-surface-subtle); color: var(--dd-text); font: inherit; font-variant-numeric: tabular-nums; user-select: text; }
.display-adjust-check { display: flex; align-items: center; gap: 8px; min-height: 40px; margin-top: 8px; cursor: pointer; }
.display-adjust-check input { width: 16px; height: 16px; accent-color: var(--dd-accent); }
.display-advanced { margin-top: 10px; padding-top: 14px; border-top: 1px solid var(--dd-line); }
.display-advanced summary { color: var(--dd-muted); cursor: pointer; min-height: 28px; }
.display-advanced form { padding-top: 8px; }
.display-advanced-fields { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; margin-top: 6px; }
.display-advanced-fields input { font-family: ui-monospace, SFMono-Regular, Consolas, monospace !important; }
#display-xor-help { margin: 6px 0 0; color: var(--dd-muted); font-size: 11px; }
.display-adjust-error { margin: 10px 0 0; color: #b42332; font-size: 12px; }
.display-adjust-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 12px; padding-top: 14px; border-top: 1px solid var(--dd-line); }
.display-adjust-footer > span { color: var(--dd-muted); font-size: 10px; }
.display-adjust-panel input:focus-visible, .display-adjust-panel button:focus-visible, .display-advanced summary:focus-visible, .btn-display-menu:focus-visible, .display-menu-item:focus-visible { outline: 2px solid var(--dd-accent); outline-offset: 2px; }
@media (min-width: 769px) and (max-width: 1000px) {
  .viewer-workspace .display-controls { gap: 8px; padding-inline: 16px; }
}
@media (max-width: 768px), (max-width: 1000px) and (max-height: 500px) and (pointer: coarse) {
  .display-control-group { gap: 6px; }
  .display-menu-item { min-height: 44px; }
  .display-adjust-panel { padding: 16px; }
  .display-adjust-panel button, .display-adjust-panel input[type="text"], .display-adjust-panel input[type="number"] { min-height: 40px; }
}
@media (pointer: coarse) {
  .display-menu-item { min-height: 44px; }
}
@media (max-width: 350px) {
  .display-adjust-panel { padding: 14px; }
  .display-candidates { gap: 5px; }
  .display-candidate span { font-size: 10px; }
}
@media (max-height: 500px) {
  /* 横屏仍锚定实际入口，高度由可见空间约束。 */
  .viewer-toolbar:has(.display-adjust-panel:not([hidden]), .display-menu:not([hidden])) { z-index: 11; }
}
@media print { .display-adjust-panel, .display-menu { display: none !important; } }

/* 重建只替换当前影像区，三种视图共用同一套响应式工具。 */
.volume-workspace[hidden], .volume-workspace [hidden] { display: none !important; }
.viewer-workspace[data-view-mode="mpr"] > .viewport-canvas-container,
.viewer-workspace[data-view-mode="volume"] > .viewport-canvas-container,
.viewer-workspace[data-view-mode="mpr"] .slice-control-bar,
.viewer-workspace[data-view-mode="volume"] .slice-control-bar { display: none !important; }
.volume-workspace { position: relative; display: flex; flex: 1; flex-direction: column; min-height: 0; min-width: 0; overflow: auto; background: var(--dd-viewer-bg); color: var(--dd-text); }
.volume-sampling-note { margin: 12px 0 0; color: var(--dd-muted); font-size: 11px; }
.volume-recommendations { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin: 10px 0; font-size: 11px; }
.volume-recommendations > span { color: var(--dd-muted); }
.display-adjust-panel .volume-recommendations button { min-height: 28px; padding: 4px 8px; }
.volume-workspace button { display: inline-flex; align-items: center; justify-content: center; min-height: 36px; padding: 7px 12px; border: 1px solid var(--dd-line); border-radius: 8px; background: var(--dd-surface); color: var(--dd-text); font: inherit; font-size: 12px; cursor: pointer; }
.volume-workspace button:hover { border-color: var(--dd-accent); }
.volume-workspace button:disabled { opacity: .45; pointer-events: none; }
.volume-density-control { display: grid; gap: 8px; margin: 10px 0; font-size: 12px; color: var(--dd-muted); }
.volume-density-control input { width: 100%; accent-color: var(--dd-accent); }
.volume-progress, .volume-message { display: flex; flex: 1; flex-direction: column; align-items: center; justify-content: center; min-height: 260px; padding: 24px; text-align: center; }
.volume-progress-card { display: grid; justify-items: center; gap: 18px; max-width: 380px; }
.volume-progress h3, .volume-message h3 { margin: 0; font-size: 17px; font-weight: 600; }
.volume-progress progress { width: min(280px, 75vw); height: 5px; accent-color: var(--dd-accent); }
.volume-message p { max-width: 450px; margin: 14px 0 20px; color: var(--dd-viewer-muted); line-height: 1.75; font-size: 13px; }
.volume-message > div { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.mpr-grid { display: grid; flex: 1; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; min-height: 360px; background: var(--dd-line); }
.mpr-pane { display: flex; flex-direction: column; min-width: 0; min-height: 0; background: var(--dd-viewer-bg); }
.mpr-pane header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 4px 8px; padding: 12px; background: var(--dd-surface-subtle); }
.mpr-pane h3 { display: flex; align-items: center; gap: 7px; margin: 0; font-size: 12px; color: var(--dd-text); }
.mpr-pane header > span { color: var(--dd-viewer-muted); font-size: 10px; white-space: nowrap; }
.mpr-plane-dot { width: 6px; height: 6px; border-radius: 50%; background: #81d2ae; }
.mpr-plane-dot.coronal { background: #76b6f7; }
.mpr-plane-dot.sagittal { background: #e5b571; }
.mpr-image-holder { position: relative; display: flex; flex: 1; align-items: center; justify-content: center; min-height: 180px; min-width: 0; overflow: hidden; padding: 8px; }
.mpr-image-holder canvas { display: block; max-width: 100%; max-height: 100%; cursor: crosshair; touch-action: none; }
.mpr-plane-navigation { display: flex; align-items: center; gap: 10px; padding: 14px 12px; min-height: 44px; background: var(--dd-surface-subtle); }
.mpr-plane-navigation input { flex: 1; width: 0; min-width: 0; height: 22px; accent-color: var(--dd-accent); }
.mpr-plane-navigation output { min-width: 62px; text-align: right; font-size: 10px; color: var(--dd-viewer-muted); font-variant-numeric: tabular-nums; }
.volume-scene { position: relative; flex: 1; min-height: 340px; outline-offset: -3px; touch-action: none; cursor: crosshair; overflow: hidden; background: var(--dd-viewer-bg); }
.volume-scene[data-drag-action="rotate"], .volume-scene[data-drag-action="pan"] { cursor: grabbing; }
.volume-scene-hint { position: absolute; z-index: 1; left: 16px; top: 14px; color: #ffffff; background: rgba(7, 9, 12, 0.68); border-radius: 4px; padding: 3px 6px; font-size: 11px; pointer-events: none; }
.volume-render-target { position: absolute; inset: 0; }
.volume-render-target canvas { display: block; width: 100%; height: 100%; }
.volume-window-overlay { position: absolute; z-index: 1; left: 12px; bottom: 12px; max-width: calc(100% - 24px); padding: 3px 6px; border-radius: 4px; color: #ffffff; background: rgba(7, 9, 12, 0.68); font-size: 11px; line-height: 1.5; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; pointer-events: none; }
.volume-render-status { position: absolute; bottom: 16px; right: 16px; z-index: 1; font-size: 11px; color: #ffffff; background: rgba(7, 9, 12, 0.68); border-radius: 6px; padding: 6px 9px; pointer-events: none; }
.volume-workspace :focus-visible { outline: 2px solid var(--dd-accent); outline-offset: 2px; }
@media (max-width: 1100px) {
  .mpr-grid { grid-template-columns: 1fr; flex: 0 0 auto; }
  .mpr-pane { min-height: 300px; }
  .mpr-image-holder { height: 230px; flex: 0 0 auto; }
  .mpr-pane header { padding: 8px 12px; }
  .mpr-plane-navigation { padding-block: 8px; }
}
@media (max-width: 768px), (pointer: coarse) {
  .volume-workspace button { min-height: 44px; }
  .volume-sampling-note { font-size: 10px; }
}
@media (max-height: 500px) and (min-width: 700px) {
  .mpr-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); flex: 1; min-height: 230px; }
  .mpr-pane { min-height: 230px; }
  .mpr-image-holder { height: 150px; min-height: 130px; flex: 1; }
  .mpr-pane header > span { display: none; }
  .volume-scene { min-height: 230px; }
}

/* 视图与调窗沿用原节点和状态；手机由当前视图入口展开三个选项。 */
.viewer-toolbar { position: relative; z-index: 7; overflow: visible; }
.viewer-toolbar [hidden] { display: none !important; }
.viewer-view-control { display: flex; align-items: center; flex-shrink: 0; }
.view-mode-picker { position: relative; flex-shrink: 0; }
.btn-view-menu { min-height: 44px; width: 58px; gap: 4px; padding: 0 6px; border: 1px solid var(--dd-line); border-radius: 9px; background: var(--dd-soft); color: var(--dd-text); font: inherit; font-weight: 500; white-space: nowrap; }
.btn-view-menu:disabled { opacity: .45; cursor: default; }
.btn-view-menu[aria-expanded="true"] { border-color: var(--dd-accent); background: var(--dd-accent-subtle); color: var(--dd-accent); }
.btn-view-menu svg { flex-shrink: 0; }
.btn-view-menu:focus-visible, .btn-mobile-series:focus-visible { outline: 2px solid var(--dd-accent); outline-offset: 2px; }
.viewer-toolbar .display-rendering-group { flex-shrink: 0; }
.viewer-toolbar .btn-display-menu { font-size: 12px; }
.btn-display-menu[data-tool-active="true"] { border-color: var(--dd-accent); color: var(--dd-accent); background: var(--dd-accent-subtle); }
.volume-workspace[data-interaction-tool="window"] .mpr-image-holder canvas,
.volume-workspace[data-interaction-tool="window"] .volume-scene { cursor: crosshair; }
.volume-workspace[data-interaction-tool="zoom"] .volume-scene,
#viewport-container[data-interaction-tool="pan"] { cursor: grab; }
#viewport-container[data-interaction-tool="window"] { cursor: crosshair; }
@media (pointer: coarse) {
  .volume-workspace[data-interaction-tool="browse"] .volume-scene { cursor: grab; }
}
/* 根据工作区实际宽度收短工具；侧栏宽度变化不再触发意外换行。 */
@container viewer-workspace (max-width: 880px) {
  .viewer-workspace[data-layout="desktop"] .display-controls { gap: 8px; padding: 8px 12px; }
  .viewer-workspace[data-layout="desktop"] .display-information-group { flex: 1 0 auto; flex-wrap: nowrap; }
  .viewer-workspace[data-layout="desktop"] .btn-study-details { margin-left: auto; }
  .viewer-workspace[data-layout="desktop"] .display-controls-title,
  .viewer-workspace[data-layout="desktop"] .viewer-toolbar .tool-text-full { display: none; }
  .viewer-workspace[data-layout="desktop"] .viewer-toolbar .tool-text-short { display: inline; }
  /* 按两组实际内容宽度换行；调窗保留动态状态，其余工具平分剩余空间。 */
  .viewer-workspace[data-layout="desktop"] .viewer-toolbar {
    display: grid;
    grid-template-columns: max-content repeat(4, minmax(max-content, 1fr));
    flex: 1 0 auto;
    margin-left: 0;
    gap: 4px;
  }
  .viewer-workspace[data-layout="desktop"][data-view-mode="mpr"] .viewer-toolbar { grid-template-columns: max-content repeat(3, minmax(max-content, 1fr)); }
  .viewer-workspace[data-layout="desktop"] .viewer-toolbar > .tool-button,
  .viewer-workspace[data-layout="desktop"] .viewer-toolbar .btn-display-menu { width: 100%; min-width: 0; min-height: 34px; padding: 6px; gap: 6px; font-size: 12px; white-space: nowrap; }
}
@media (min-width: 769px) and (max-width: 1000px) and (max-height: 500px) and (orientation: landscape) {
  .viewer-toolbar > .tool-button { min-height: 32px; }
}
/* 紧凑模式由与侧栏同一媒体条件的 matchMedia 设置，工具移动后仍保持自然 Tab 顺序。 */
.viewer-workspace[data-layout="compact"] {
  min-height: 0;
}
.viewer-workspace[data-layout="compact"] .viewer-context-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  background: var(--dd-surface);
  border-bottom: 1px solid var(--dd-line);
  z-index: 8;
}
.viewer-workspace[data-layout="compact"] .mobile-series-bar {
  flex: 1;
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
  font-size: 12px;
}
.viewer-workspace[data-layout="compact"] .btn-mobile-series {
  width: 100%;
  min-width: 44px;
  min-height: 44px;
  justify-content: flex-start;
  gap: 4px;
  padding: 0 2px;
  border-radius: 8px;
  color: var(--dd-text);
}
.viewer-workspace[data-layout="compact"] .btn-mobile-series > svg { flex-shrink: 0; }
.viewer-workspace[data-layout="compact"] #mobile-series-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.viewer-workspace[data-layout="compact"] .display-controls { flex: 0 0 auto; min-height: 0; padding: 0; gap: 0; border: 0; background: transparent; }
.viewer-workspace[data-layout="compact"] .display-information-group { flex-wrap: nowrap; gap: 4px; }
.viewer-workspace[data-layout="compact"] #info-mode { gap: 2px; padding: 2px; }
.viewer-workspace[data-layout="compact"] #info-mode button { min-width: 44px; min-height: 44px; padding-inline: 4px; }
.viewer-workspace[data-layout="compact"] .btn-study-details { min-width: 44px; min-height: 44px; padding: 0 7px; border-color: transparent; background: transparent; }
.viewer-workspace[data-layout="compact"] .btn-study-details:hover:not(:disabled) { background: var(--dd-soft); }
.viewer-workspace[data-layout="compact"] .viewer-view-control {
  position: fixed;
  z-index: 12;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 2px;
  padding: 6px;
  border: 1px solid var(--dd-line);
  border-radius: 12px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--dd-surface);
  box-shadow: 0 10px 32px rgba(0, 0, 0, .18);
}
.viewer-workspace[data-layout="compact"] .viewer-view-control button { display: flex; justify-content: space-between; min-height: 44px; width: 100%; padding: 8px 10px; opacity: 1; text-align: left; }
.viewer-workspace[data-layout="compact"] .viewer-view-control button:disabled { opacity: .4; }
.viewer-workspace[data-layout="compact"] .viewer-view-control button[aria-pressed="true"] { background: var(--dd-accent-subtle); color: var(--dd-accent); box-shadow: none; }
.viewer-workspace[data-layout="compact"] .viewer-view-control button[aria-pressed="true"]::after { content: '✓'; font-size: 12px; }
.viewer-workspace[data-layout="compact"] .viewer-view-control button:hover:not(:disabled) { background: var(--dd-accent-subtle); color: var(--dd-accent); }
.viewer-workspace[data-layout="compact"] .viewer-bottom-controls {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  border-top: 1px solid var(--dd-line);
  z-index: 7;
}
.viewer-workspace[data-layout="compact"] .viewer-bottom-controls:has(.display-adjust-panel:not([hidden]), .display-menu:not([hidden])) { position: relative; z-index: 20; }
.viewer-workspace[data-layout="compact"] .slice-control-bar { min-width: 0; padding: 2px 8px; gap: 8px; border: 0; }
.viewer-workspace[data-layout="compact"] .btn-nav-slice { width: 44px; height: 44px; }
.viewer-workspace[data-layout="compact"] input[type="range"].slice-slider { height: 44px; background: transparent; border-radius: 0; }
.viewer-workspace[data-layout="compact"] .slice-slider::-webkit-slider-runnable-track { height: 4px; background: var(--dd-soft); border-radius: 2px; }
.viewer-workspace[data-layout="compact"] input[type="range"].slice-slider::-webkit-slider-thumb { margin-top: -7px; }
.viewer-workspace[data-layout="compact"] .slice-slider::-moz-range-track { height: 4px; background: var(--dd-soft); border-radius: 2px; }
.viewer-workspace[data-layout="compact"] .slice-slider::-moz-range-thumb { width: 18px; height: 18px; border: 0; border-radius: 50%; background: var(--dd-accent); }
.viewer-workspace[data-layout="compact"] .slice-slider:focus-visible { outline: 2px solid var(--dd-accent); outline-offset: 1px; border-radius: 5px; }
.viewer-workspace[data-layout="compact"] .viewer-toolbar {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    align-items: stretch;
    flex: 0 0 auto;
    width: 100%;
    margin-left: 0;
    gap: 4px;
    padding: 4px 8px 6px;
  }
.viewer-workspace[data-layout="compact"][data-view-mode="mpr"] .viewer-toolbar { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.viewer-workspace[data-layout="compact"] .viewer-toolbar > .tool-button,
.viewer-workspace[data-layout="compact"] .viewer-toolbar .btn-display-menu {
    flex-direction: column;
    width: 100%;
    min-width: 0;
    height: 46px;
    min-height: 46px;
    padding: 4px 2px;
    gap: 3px;
    border-radius: 10px;
    background: var(--dd-surface-subtle);
    font-size: 11px;
    line-height: 1.2;
    white-space: nowrap;
  }
.viewer-workspace[data-layout="compact"] .viewer-toolbar > .tool-button:hover:not(:disabled):not([aria-pressed="true"]) { background: var(--dd-soft); }
.viewer-workspace[data-layout="compact"] .viewer-toolbar > .tool-button[aria-pressed="true"],
.viewer-workspace[data-layout="compact"] .viewer-toolbar .btn-display-menu[aria-expanded="true"],
.viewer-workspace[data-layout="compact"] .viewer-toolbar .btn-display-menu[data-tool-active="true"] { background: var(--dd-accent-subtle); }
.viewer-workspace[data-layout="compact"] .viewer-toolbar > .tool-button > svg,
.viewer-workspace[data-layout="compact"] .viewer-toolbar .display-menu-icon { width: 16px; height: 16px; }
.viewer-workspace[data-layout="compact"] .viewer-toolbar .tool-text-full,
.viewer-workspace[data-layout="compact"] .viewer-toolbar #display-menu-value,
.viewer-workspace[data-layout="compact"] .viewer-toolbar .display-menu-chevron { display: none; }
.viewer-workspace[data-layout="compact"] .viewer-toolbar .tool-text-short { display: inline; }
.viewer-workspace[data-layout="compact"] .viewer-toolbar .display-menu-label-compact { display: inline-flex; align-items: center; gap: 2px; }
@media (pointer: coarse) {
  .viewer-toolbar > .tool-button, .viewer-toolbar .btn-display-menu,
  .viewer-workspace[data-layout="desktop"] .viewer-toolbar > .tool-button,
  .viewer-workspace[data-layout="desktop"] .viewer-toolbar .btn-display-menu { min-height: 44px; }
  .display-controls .display-segments button, .display-controls .btn-study-details { min-height: 44px; min-width: 44px; }
}
@media (min-width: 1101px) and (max-width: 1560px) {
  .viewer-toolbar .tool-text-full { display: none; }
  .viewer-toolbar .tool-text-short { display: inline; }
  .viewer-toolbar > .tool-button { gap: 6px; padding-inline: 8px; white-space: nowrap; }
}
@media (min-width: 700px) and (max-height: 500px) {
  /* 手机横屏让翻片和工具左右并排，仍为触屏保留 44px 命中区。 */
  .viewer-workspace[data-layout="compact"] .viewer-bottom-controls { flex-direction: row; align-items: center; }
  .viewer-workspace[data-layout="compact"] .slice-control-bar { flex: 1; padding-right: 4px; }
  .viewer-workspace[data-layout="compact"] .viewer-toolbar { width: 310px; max-width: 48%; padding: 4px 8px; }
  .viewer-workspace[data-layout="compact"][data-view-mode="volume"] .viewer-toolbar,
  .viewer-workspace[data-layout="compact"][data-view-mode="mpr"] .viewer-toolbar { margin-left: auto; }
  .viewer-workspace[data-layout="compact"] .volume-scene { min-height: 0; }
  .viewer-workspace[data-layout="compact"] .mpr-grid { min-height: 0; }
  .viewer-workspace[data-layout="compact"] .mpr-pane { min-height: 0; }
  .viewer-workspace[data-layout="compact"] .mpr-image-holder { height: auto; min-height: 72px; }
}
@media print {
  .viewer-context-bar, .viewer-bottom-controls { display: none !important; }
}