/* ===== TEM肾小球超微结构分析系统 - 样式 ===== */

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

:root {
  --bg-primary: #1a1d23;
  --bg-secondary: #21252b;
  --bg-tertiary: #2c313a;
  --bg-hover: #353b48;
  --border: #3a3f4b;
  --text-primary: #e1e4e8;
  --text-secondary: #8b949e;
  --text-muted: #5a6370;
  --accent: #4d90fe;
  --accent-hover: #5a9cff;
  --accent-dim: #3a7be0;
  --success: #34d058;
  --warning: #f0ad4e;
  --danger: #f85149;
  --danger-hover: #ff6b63;
  --radius: 6px;
  --radius-sm: 4px;
  --font-mono: "Cascadia Code", "Fira Code", "Consolas", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  --shadow: 0 4px 16px rgba(0,0,0,0.3);
}

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow: hidden;
  user-select: none;
}

/* ===== Toolbar ===== */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 44px;
  padding: 0 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 100;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.3px;
}

.session-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.session-badge.connected {
  background: rgba(52, 208, 88, 0.12);
  color: var(--success);
  border-color: rgba(52, 208, 88, 0.3);
}

.toolbar-right {
  display: flex;
  gap: 8px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 6px 14px;
  font-size: 12px;
  font-family: var(--font-sans);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

.btn:hover { background: var(--bg-hover); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { background: var(--accent-dim); }

.btn-outline {
  background: transparent;
  border-color: var(--border);
}
.btn-outline:hover { border-color: var(--text-secondary); }

.btn-danger {
  color: var(--danger);
  border-color: transparent;
  background: transparent;
}
.btn-danger:hover { background: rgba(248, 81, 73, 0.1); }

.btn-sm { padding: 4px 10px; font-size: 11px; }
.btn-xs { padding: 2px 8px; font-size: 10px; }
.btn-full { width: 100%; }

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.15s;
}
.btn-icon:hover { background: var(--bg-hover); }

/* ===== Main Container ===== */
.main-container {
  display: flex;
  height: calc(100vh - 44px);
}

/* ===== Side Panel ===== */
.side-panel {
  width: 280px;
  min-width: 280px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1px;
  flex-shrink: 0;
}

.panel-section {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.section-header h2 {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.count-badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 8px;
  background: var(--bg-tertiary);
  color: var(--text-muted);
}

/* Image List */
.image-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 200px;
  overflow-y: auto;
}

.image-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
}

.image-item:hover { background: var(--bg-hover); }
.image-item.active { background: var(--bg-tertiary); border-color: var(--accent); }

.image-thumb {
  width: 36px;
  height: 36px;
  border-radius: 3px;
  object-fit: cover;
  background: var(--bg-tertiary);
  flex-shrink: 0;
}

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

.image-item-name {
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.image-item-meta {
  font-size: 10px;
  color: var(--text-muted);
}

.image-item-status {
  display: flex;
  gap: 4px;
  align-items: center;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
}
.status-dot.calibrated { background: var(--success); }
.status-dot.measured { background: var(--accent); }

.empty-hint {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  padding: 16px 0;
}

/* Tool Buttons */
.tool-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 4px;
}

.tool-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 8px 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 10px;
  font-family: var(--font-sans);
  transition: all 0.15s;
}

.tool-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.tool-btn.active { background: var(--accent-dim); border-color: var(--accent); color: #fff; }
.tool-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.tool-btn:disabled:hover { background: var(--bg-tertiary); color: var(--text-secondary); }

/* Scale Info */
.scale-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.info-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.info-row span:last-child { color: var(--text-primary); }

/* Measure List */
.measure-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  max-height: 160px;
  overflow-y: auto;
  margin-bottom: 6px;
}

.measure-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 6px;
  font-size: 11px;
  font-family: var(--font-mono);
  border-radius: 3px;
  background: var(--bg-tertiary);
}

.measure-item.fused {
  border-left: 2px solid var(--warning);
}

.measure-item .measure-label { color: var(--text-secondary); }
.measure-item .measure-value { color: var(--text-primary); }
.measure-item .measure-delete {
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  padding: 0 2px;
}
.measure-item .measure-delete:hover { color: var(--danger); }

.measure-stats {
  font-size: 10px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  border-top: 1px solid var(--border);
  padding-top: 6px;
}

/* ===== Viewer ===== */
.viewer-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #0d0f12;
  overflow: hidden;
}

.viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 32px;
  padding: 0 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.viewer-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-secondary);
}

.viewer-info .separator { color: var(--text-muted); font-size: 10px; }

.viewer-controls {
  display: flex;
  align-items: center;
  gap: 4px;
}

.zoom-slider {
  width: 80px;
  height: 4px;
  accent-color: var(--accent);
  cursor: pointer;
}

.canvas-wrapper {
  flex: 1;
  position: relative;
  overflow: hidden;
  cursor: crosshair;
}

.canvas-wrapper.panning { cursor: grabbing; }

#imageCanvas {
  position: absolute;
  top: 0;
  left: 0;
  image-rendering: pixelated;
}

.canvas-hint {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 14px;
  color: var(--text-muted);
  pointer-events: none;
}

/* Status Bar */
.status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 24px;
  padding: 0 12px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  font-size: 10px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.status-bar .separator { color: var(--border); }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 400px;
  max-width: 500px;
}

.modal-wide { min-width: 560px; max-width: 720px; max-height: 80vh; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 { font-size: 14px; font-weight: 600; }

.modal-close {
  border: none;
  background: none;
  font-size: 20px;
  color: var(--text-muted);
  cursor: pointer;
}
.modal-close:hover { color: var(--text-primary); }

.modal-body {
  padding: 16px;
  max-height: 60vh;
  overflow-y: auto;
}

.modal-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.5;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
}

.form-group {
  margin-bottom: 10px;
}

.form-group label {
  display: block;
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.input, .input-readonly {
  width: 100%;
  padding: 7px 10px;
  font-size: 12px;
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  outline: none;
}
.input:focus { border-color: var(--accent); }
.input-readonly { color: var(--text-muted); background: var(--bg-primary); }

select.input { cursor: pointer; appearance: auto; }

/* ===== Report Styles ===== */
.report-section {
  margin-bottom: 16px;
}

.report-section h4 {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

.report-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
  font-family: var(--font-mono);
}

.report-table th, .report-table td {
  padding: 5px 8px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.report-table th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 10px;
}

.report-table td { color: var(--text-primary); }

.report-tag {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 500;
}

.report-tag.normal { background: rgba(52,208,88,0.15); color: var(--success); }
.report-tag.mild { background: rgba(240,173,78,0.15); color: var(--warning); }
.report-tag.moderate { background: rgba(240,173,78,0.25); color: var(--warning); }
.report-tag.severe { background: rgba(248,81,73,0.2); color: var(--danger); }

.report-hint {
  padding: 8px 10px;
  margin-top: 6px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  font-size: 11px;
  line-height: 1.5;
}

.report-hint strong { color: var(--warning); }
.report-hint li { margin-left: 16px; margin-top: 2px; }

/* ===== Toast ===== */
.toast-container {
  position: fixed;
  bottom: 40px;
  right: 16px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.toast {
  padding: 8px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 11px;
  box-shadow: var(--shadow);
  animation: toastIn 0.2s ease-out;
  max-width: 320px;
}

.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); }
.toast.warning { border-color: var(--warning); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* Image delete button */
.img-delete-btn {
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  border: none; background: transparent;
  color: var(--text-muted); cursor: pointer;
  border-radius: 3px; font-size: 14px; flex-shrink: 0;
}
.img-delete-btn:hover { color: var(--danger); background: rgba(248,81,73,0.1); }

/* AI tool accent */
.tool-btn.ai-tool { /* batch measurement buttons */ border-color: rgba(240,173,78,0.3); }
.tool-btn.ai-tool:hover { border-color: var(--warning); }
.tool-btn.ai-tool.active { background: rgba(240,173,78,0.25); border-color: var(--warning); color: #fff; }