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

:root {
  --bg: #f3f4f6;
  --surface: #ffffff;
  --border: #d7dbe2;
  --primary: #1a56db;
  --primary-hover: #1446b0;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --accent: #e8f0fe;
  --danger: #dc2626;
  --radius: 8px;
  --shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  --panel-width: 252px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Microsoft YaHei', sans-serif;
  background: #eef1f5;
  color: var(--text);
  min-height: 100vh;
}

html.auth-pending .layout {
  visibility: hidden;
}

.auth-gate-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #eef1f5;
  padding: 24px;
}

.auth-gate-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 32px 28px;
  text-align: center;
}

.auth-gate-brand {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.auth-gate-msg {
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 24px;
}

.auth-gate-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.auth-gate-btn {
  display: block;
  padding: 10px 16px;
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 14px;
  border: 1px solid var(--border);
  color: var(--text);
  background: #fff;
}

.auth-gate-btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.auth-gate-hint {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.auth-gate-hint a {
  color: var(--primary);
}

.layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ── 左侧步骤面板 ── */
.steps-panel {
  width: var(--panel-width);
  min-width: var(--panel-width);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  background: #f8fafc;
}

.steps-panel-header {
  flex-shrink: 0;
  padding: 10px 10px 8px;
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
  z-index: 2;
}

.steps-panel-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.app-title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.45em;
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0 2px;
}

.app-brand {
  font-family: system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand-derip {
  color: #1e88e5;
}

.brand-slash {
  color: #e0e0e0;
  font-weight: 700;
}

.app-name {
  color: #5f6368;
  font-weight: 400;
}

.card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 9px;
}

.step-card h2 {
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 0.72rem;
  flex-shrink: 0;
}

.hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.5;
}

.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 12px 8px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--primary);
  background: var(--accent);
}

.upload-icon {
  font-size: 1.4rem;
  margin-bottom: 4px;
}

.upload-zone p {
  font-size: 0.78rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.72rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.btn:hover:not(:disabled) {
  background: var(--accent);
  border-color: var(--primary);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  width: 100%;
  margin-top: 8px;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.export-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 6px;
}

.export-options .select {
  width: 100%;
}

.export-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.export-actions .btn-primary,
.mark-actions .btn-primary {
  margin-top: 0;
}

.import-options {
  margin-top: 8px;
}

.import-formats {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  line-height: 1.4;
}

.import-dpi-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px;
  align-items: center;
}

.project-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 8px;
}

.mark-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 8px;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 0.72rem;
}

.row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  cursor: pointer;
}

textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px;
  font-size: 0.76rem;
  font-family: inherit;
  resize: vertical;
  line-height: 1.6;
}

textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(26, 86, 219, 0.15);
}

.mark-list {
  display: none;
}

.mark-board-hint {
  margin: 6px 0 0;
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.mark-list-hint {
  margin-top: 8px;
  margin-bottom: 4px;
}

.mark-list li {
  font-size: 0.78rem;
  padding: 6px 8px;
  border-radius: 4px;
  margin-bottom: 3px;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  border: 1px solid transparent;
}

.mark-list li:hover { background: #f3f4f6; }
.mark-list li.active {
  background: var(--accent);
  border-color: var(--primary);
  font-weight: 600;
}
.mark-list li.done .mark-text { color: var(--text-muted); }

.mark-count {
  color: #ea580c;
  font-size: 0.72rem;
  font-weight: 700;
  margin-left: auto;
  min-width: 16px;
  text-align: center;
}

.mark-del {
  border: none;
  background: transparent;
  color: var(--danger);
  cursor: pointer;
  font-size: 1rem;
  padding: 0 4px;
}

.mark-text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.figure-list {
  list-style: none;
  max-height: 130px;
  overflow-y: auto;
  margin-bottom: 6px;
}

.figure-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: 4px;
  margin-bottom: 3px;
  cursor: pointer;
  border: 1px solid transparent;
  font-size: 0.78rem;
}

.figure-item:hover { background: #f3f4f6; }
.figure-item.active {
  background: var(--accent);
  border-color: var(--primary);
}

.figure-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  background: #d1d5db;
}

.figure-item.status-loaded .figure-status-dot { background: #fbbf24; }
.figure-item.status-cropped .figure-status-dot { background: #60a5fa; }
.figure-item.status-annotated .figure-status-dot { background: #16a34a; }

.figure-name {
  flex: 1;
  font-size: 0.78rem;
  min-width: 0;
  padding: 2px 4px;
  font-weight: 600;
}

.figure-item.active .figure-name { color: var(--primary); }

.figure-meta {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.figure-replace-btn,
.figure-order-btn {
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-muted);
  border-radius: 3px;
  cursor: pointer;
}

.figure-replace-btn {
  padding: 1px 5px;
  font-size: 0.68rem;
}

.figure-order-btn {
  width: 20px;
  height: 20px;
  line-height: 1;
  font-size: 0.68rem;
}

.figure-replace-btn:hover,
.figure-order-btn:hover:not(:disabled) {
  color: var(--primary);
  border-color: var(--primary);
}

.figure-order-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.mark-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  background: #fff;
  color: var(--primary);
  border: 1.5px solid var(--primary);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}

.crop-preview canvas {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-top: 6px;
  background: #fff;
}

.hidden { display: none !important; }

.field-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 8px;
  margin-bottom: 4px;
}

.select {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.78rem;
  background: var(--surface);
}

.full-width { width: 100%; margin-top: 6px; }

.image-info {
  font-size: 0.72rem;
  color: var(--primary);
  margin-top: 8px;
  padding: 6px 8px;
  background: var(--accent);
  border-radius: 4px;
}

.pdf-controls,
.cad-controls { margin-top: 10px; }

.pdf-controls .row {
  justify-content: center;
  margin-top: 4px;
}

/* ── 工作区：工具栏 + 画布 ── */
.workspace {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  background: #eef1f5;
}

.canvas-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  padding: 6px;
  gap: 5px;
}

.canvas-workspace {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  gap: 5px;
}

.canvas-workspace.mark-board-right {
  flex-direction: row;
  align-items: stretch;
}

.canvas-main {
  flex: 1;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.mark-board-shell {
  flex-shrink: 0;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 4px;
  min-width: 0;
  padding: 2px 4px 2px 6px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.canvas-workspace.mark-board-right .mark-board-shell {
  order: 2;
  flex-direction: column;
  align-items: stretch;
  width: min(220px, 32%);
  min-width: 168px;
  max-height: 100%;
  padding: 4px;
}

.mark-board-dock-btn {
  flex-shrink: 0;
  align-self: center;
  margin-left: auto;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: #fff;
  color: var(--primary);
  font-size: 0.66rem;
  font-weight: 600;
  line-height: 1.2;
  padding: 2px 6px;
  min-height: 22px;
  cursor: pointer;
}

.canvas-workspace.mark-board-right .mark-board-dock-btn {
  order: -1;
  align-self: flex-end;
  margin-left: 0;
  margin-bottom: 2px;
}

.mark-board-dock-btn:hover {
  background: var(--accent);
  border-color: var(--primary);
}

.canvas-statusbar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--text-muted);
  min-height: 22px;
}

.zoom-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.mode-badge {
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--accent);
  color: var(--primary);
  font-weight: 500;
}

.mode-badge.crop { background: #fef3c7; color: #92400e; }
.mode-badge.annotate,
.mode-badge.edit { background: #d1fae5; color: #065f46; }
.mode-badge.erase { background: #fce7f3; color: #9d174d; }

.live-hint {
  font-size: 0.78rem;
  font-weight: 500;
  white-space: nowrap;
}

.live-hint.annotate { color: #dc2626; }
.live-hint.edit { color: #065f46; }
.live-hint.erase { color: #9d174d; }

.canvas-wrap {
  flex: 1;
  position: relative;
  overflow: auto;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: default;
}

.canvas-wrap.panning { cursor: grab; }
.canvas-wrap.panning:active { cursor: grabbing; }
.canvas-wrap.erase-mode,
.canvas-wrap.crop-mode { cursor: crosshair; }

.canvas-wrap.pan-mode { cursor: grab; }

.mode-badge.pan {
  background: #e0e7ff;
  color: #3730a3;
}

#mainCanvas,
#overlayCanvas {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: 0 0;
  pointer-events: none;
}

.mark-board {
  flex: 1;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  align-items: center;
  gap: 3px 6px;
  padding: 0;
  background: transparent;
  pointer-events: auto;
}

.canvas-workspace.mark-board-right .mark-board {
  flex-direction: column;
  flex-wrap: nowrap;
  align-content: stretch;
  overflow-x: hidden;
  overflow-y: auto;
}

.canvas-workspace.mark-board-right .mark-note {
  width: 100%;
  max-width: none;
}

.mark-note {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  width: auto;
  max-width: 220px;
  min-height: 22px;
  padding: 2px 6px;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  background: #fff;
  color: #1f2937;
  box-shadow: none;
  font-size: 0.72rem;
  cursor: pointer;
  pointer-events: auto;
  touch-action: manipulation;
  user-select: none;
}

.mark-note:hover {
  border-color: #d6a900;
  background: rgba(255, 248, 191, 0.38);
}

.mark-note.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(26, 86, 219, 0.16);
}

.mark-note.done {
  border-color: #fdba74;
  background: #fff7ed;
  color: #1f2937;
}

.mark-note-num {
  display: inline;
  min-width: 0;
  height: auto;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: var(--primary);
  border: none;
  font-size: inherit;
  font-weight: 700;
  flex-shrink: 0;
}

.mark-note-text {
  font-size: inherit;
  font-weight: 400;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mark-count-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  min-width: 16px;
  height: 16px;
  padding: 0 5px;
  margin-left: 4px;
  border-radius: 999px;
  background: #ea580c;
  color: #fff;
  font-size: 0.62rem;
  font-weight: 700;
  line-height: 1;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.85);
}

.status {
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-shrink: 0;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── 顶部工具栏 ── */
.tools-panel {
  --view-col: 188px;
  --edit-col: 190px;
  --annotate-col: 280px;
  --coord-col: 580px;
  width: 100%;
  min-width: 0;
  border-bottom: 1px solid var(--border);
  background: #ffffff;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 2px 8px 2px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
}

.tools-row {
  display: grid;
  grid-template-columns: var(--view-col) var(--edit-col) var(--annotate-col) var(--coord-col);
  align-items: center;
  gap: 0;
  flex-shrink: 0;
  width: max-content;
}

.tools-categories {
  min-height: 20px;
  border-bottom: 1px solid #edf0f4;
}

.tools-title {
  font-size: 0.66rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0;
  width: auto;
  padding-left: 2px;
  border-right: 1px solid var(--border);
}

.tools-title:last-child { border-right: none; }

.tools-hint {
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  line-height: 1.4;
}

.tool-group,
.control-group {
  display: flex;
  align-items: center;
  gap: 4px;
  padding-right: 8px;
  padding-left: 0;
  border-right: 1px solid var(--border);
  min-width: 0;
}

.tool-group:last-child,
.control-group:last-child {
  border-right: none;
}

.tools-actions {
  min-height: 26px;
}

.tools-params {
  min-height: 40px;
  align-items: flex-start;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(38px, auto));
  gap: 4px;
}

.tool-grid-spaced {
  margin-top: 0;
}

.tool-stack {
  display: flex;
  flex-direction: row;
  gap: 4px;
}

.tool-btn {
  width: auto;
  min-width: 38px;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: #f8fafc;
  color: var(--text);
  font-size: 0.7rem;
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.tool-btn:hover:not(:disabled) {
  background: var(--accent);
  border-color: var(--primary);
}

.tool-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.tool-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 500;
}

.tool-btn-mode.active.erase-active {
  background: #be185d;
  border-color: #be185d;
}

.tool-btn-mode.active.crop-active {
  background: #b45309;
  border-color: #b45309;
}

.range-row {
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: 82px;
}

.range {
  flex: 1;
  min-width: 0;
}

.range-val {
  font-size: 0.72rem;
  color: var(--text-muted);
  min-width: 24px;
  text-align: right;
}

.coord-top {
  gap: 4px;
  flex-wrap: nowrap;
}

.coord-type-select,
.coord-dir-select {
  min-width: 56px;
  height: 26px;
  padding: 2px 6px;
}

.coord-dir-select {
  min-width: 68px;
}

.annotate-font-pair {
  min-width: 108px;
}

.coord-params {
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  padding-top: 0;
}

.coord-params-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  width: 100%;
}

.coord-details {
  padding-left: 2px;
}

.coord-labels {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.mini-input {
  width: 32px;
  padding: 4px 5px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: #f8fafc;
  color: var(--text);
  font-size: 0.7rem;
  text-align: center;
  flex-shrink: 0;
}

.coord-pair {
  min-width: 96px;
}

.coord-angle-wrap .range-row {
  min-width: 72px;
}

.coord-pair .range-row {
  min-width: 72px;
}

.tools-check {
  margin-top: 0;
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}

.tool-group .tools-check {
  font-size: 0.7rem;
  gap: 4px;
}

.tools-panel .field-label {
  margin: 0;
  color: var(--text-muted);
  white-space: nowrap;
  font-size: 0.66rem;
}

.tools-panel .select {
  width: auto;
  min-width: 70px;
  padding: 4px 6px;
  background: #f8fafc;
  color: var(--text);
  border-color: var(--border);
  font-size: 0.7rem;
}

.control-pair {
  display: grid;
  gap: 2px;
  align-items: center;
  min-width: 0;
}

.tool-group[data-group="view"] {
  gap: 3px;
  padding-right: 6px;
}

.control-group[data-group="view"] {
  gap: 3px;
  padding-right: 6px;
}

.zoom-control {
  flex: 1;
  min-width: 0;
  width: 100%;
}

.zoom-range-row {
  display: flex;
  align-items: center;
  gap: 3px;
}

.control-group[data-group="view"] .control-pair {
  gap: 1px;
}

.control-group[data-group="view"] .zoom-range-row .range {
  flex: 1 1 64px;
  min-width: 48px;
  max-width: 88px;
}

.zoom-step {
  min-width: 22px;
  width: 22px;
  padding: 3px 0;
  font-weight: 700;
}

.kbd-hint {
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: normal;
}