* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

:root {
  --bg-primary: #f0f2f5;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border-color: rgba(148, 163, 184, 0.25);
  --border-color-strong: rgba(148, 163, 184, 0.4);
  --card-bg: #ffffff;
  --card-header-bg: #f8fafc;
  --accent-blue: #3b82f6;
  --accent-blue-light: rgba(59, 130, 246, 0.12);
  --accent-blue-dark: #2563eb;
  --accent-green: #10b981;
  --accent-green-light: rgba(16, 185, 129, 0.12);
  --accent-red: #ef4444;
  --accent-red-light: rgba(239, 68, 68, 0.1);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08);
  --glass-border: 1px solid rgba(148, 163, 184, 0.15);
  --distance-bg: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(37, 99, 235, 0.08) 100%);
  --distance-color: #3b82f6;
  --distance-border: rgba(59, 130, 246, 0.25);
  --input-bg: #ffffff;
  --btn-primary-bg: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  --btn-accent-bg: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --map-bg: #e2e8f0;
  --header-gradient: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  --transition-fast: 150ms;
  --transition-normal: 250ms;
  --sidebar-width: 340px;
  --border-radius: 10px;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app {
  display: flex;
  height: 100vh;
  height: 100dvh;
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.loading-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.loading-text {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  margin: 0;
}

.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100vh;
  height: 100dvh;
  background: var(--bg-secondary);
  border-right: var(--glass-border);
  box-shadow: var(--shadow-md);
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  transition: all var(--transition-normal);
  position: relative;
  z-index: 10;
}

.sidebar-header {
  background: var(--header-gradient);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: 60px;
}

.sidebar-header h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: 0.3px;
  flex: 1;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.card {
  margin: 10px 14px;
  background: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: var(--glass-border);
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-color-strong);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  background: var(--card-header-bg);
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  user-select: none;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.card-header:hover {
  filter: brightness(0.97);
}

.card-icon {
  font-size: 16px;
  opacity: 0.8;
}

.collapse-icon {
  margin-left: auto;
  font-size: 12px;
  transition: transform var(--transition-fast);
  opacity: 0.6;
}

.card.collapsed .collapse-icon {
  transform: rotate(-90deg);
}

.card-body {
  padding: 14px;
  animation: fadeIn var(--transition-normal) ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

.styled-select {
  width: 100%;
  padding: 10px 12px;
  font-size: 13px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--text-primary);
  outline: none;
  cursor: pointer;
  margin-bottom: 10px;
  transition: all var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.styled-select:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px var(--accent-blue-light);
}

.tianditu-key-box {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
  min-width: 0;
}

.tianditu-key-box input {
  flex: 1;
  min-width: 0;
  padding: 8px 12px;
  font-size: 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
}

.tianditu-key-box input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px var(--accent-blue-light);
}

.key-link {
  font-size: 11px;
  color: var(--accent-blue);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 6px;
  background: var(--accent-blue-light);
  white-space: nowrap;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.key-link:hover {
  background: var(--accent-blue);
  color: white;
}

.mode-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.mode-btn {
  flex: 1;
  padding: 10px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mode-btn:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.mode-btn.active {
  border-color: var(--accent-blue);
  background: var(--accent-blue-light);
  color: var(--accent-blue);
  font-weight: 600;
}

.smooth-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  margin-bottom: 10px;
  background: var(--bg-tertiary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.smooth-toggle-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #cbd5e1;
  transition: all 0.3s ease;
  border-radius: 24px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background: white;
  transition: all 0.3s ease;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--accent-blue);
}

.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(20px);
}

.toggle-switch input:focus-visible + .toggle-slider {
  box-shadow: 0 0 0 2px var(--accent-blue-light);
}

.shape-panel {
  padding: 12px;
  background: var(--bg-tertiary);
  border-radius: 8px;
  margin-bottom: 12px;
}

.slider-control {
  margin-bottom: 12px;
}

.slider-control label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.slider-row input[type="range"] {
  flex: 1;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border-color);
  border-radius: 2px;
  outline: none;
}

.slider-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent-blue);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
}

.slider-row input[type="number"] {
  width: 60px;
  padding: 6px 8px;
  font-size: 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text-primary);
  text-align: center;
  flex-shrink: 0;
}

.offset-row {
  display: flex;
  gap: 8px;
}

.offset-row input {
  flex: 1;
  min-width: 0;
}

.btn-primary {
  width: 100%;
  padding: 10px;
  font-size: 13px;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  background: var(--btn-primary-bg);
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2);
}

.distance-display {
  font-size: 22px;
  font-weight: 700;
  text-align: center;
  padding: 14px;
  background: var(--distance-bg);
  border: 1px solid var(--distance-border);
  border-radius: 10px;
  margin-bottom: 12px;
  color: var(--distance-color);
  overflow: hidden;
}

.route-status {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: auto;
}

.route-actions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}

.btn-secondary {
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.btn-secondary:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: var(--accent-blue-light);
}

.saved-routes {
  margin-top: 12px;
  max-height: 120px;
  overflow-y: auto;
}

.saved-route-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  margin-bottom: 6px;
  background: var(--bg-tertiary);
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.saved-route-item:hover {
  background: var(--accent-blue-light);
}

.saved-route-item span {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.saved-route-item button {
  background: none;
  border: none;
  color: var(--accent-red);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 6px;
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.saved-route-item button:hover {
  background: var(--accent-red-light);
}

.lap-calc {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}

.lap-calc-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-row-2 {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  min-width: 0;
}

.form-row-2 input {
  flex: 1;
  min-width: 0;
  padding: 8px 10px;
  font-size: 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
}

.form-row-2 input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px var(--accent-blue-light);
}

.btn-small {
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-small:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: var(--accent-blue-light);
}

.param-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 12px;
}

.param-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.param-item label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.param-item input {
  padding: 8px 10px;
  font-size: 13px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
  width: 100%;
}

.param-item input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px var(--accent-blue-light);
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 10px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.checkbox-label:hover {
  background: var(--bg-tertiary);
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent-blue);
  cursor: pointer;
  flex-shrink: 0;
}

.options-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 4px 0;
}

.export-times {
  margin-bottom: 12px;
}

.export-time-row {
  padding: 10px;
  margin-bottom: 8px;
  background: var(--bg-tertiary);
  border-radius: 8px;
}

.export-row-1 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  min-width: 0;
}

.export-row-1 span {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.export-row-1 input {
  flex: 1;
  min-width: 0;
  padding: 6px 10px;
  font-size: 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text-primary);
  outline: none;
}

.export-row-2 {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.export-row-2 span {
  font-size: 11px;
  color: var(--text-muted);
}

.export-row-2 .pace-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-right: 4px;
}

.export-row-2 input {
  width: 50px;
  padding: 5px 6px;
  font-size: 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text-primary);
  text-align: center;
  outline: none;
}

.export-row-2 input:focus {
  border-color: var(--accent-blue);
}

.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 12px 14px;
}

.btn-generate {
  padding: 14px;
  font-size: 14px;
  font-weight: 700;
  border: none;
  border-radius: 10px;
  background: var(--btn-primary-bg);
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 6px rgba(59, 130, 246, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-generate:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-preview {
  padding: 12px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn-preview:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: var(--accent-blue-light);
}

.btn-location {
  width: 100%;
  padding: 12px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 10px;
}

.btn-location:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: var(--accent-blue-light);
}

.preview-panel {
  display: none;
  padding: 14px;
  background: var(--bg-tertiary);
  border-radius: var(--border-radius);
  margin: 0 14px 12px;
  animation: slideDown var(--transition-normal) ease;
}

.preview-panel.visible {
  display: block;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.preview-chart {
  margin-bottom: 12px;
}

.preview-chart h3 {
  font-size: 12px;
  color: var(--text-secondary);
  margin: 0 0 8px 0;
  font-weight: 500;
}

.preview-chart canvas {
  width: 100% !important;
  height: 80px !important;
}

.live-info {
  padding: 10px 14px;
  background: var(--accent-blue-light);
  border: 1px solid var(--accent-blue);
  border-radius: 8px;
  font-size: 12px;
  color: var(--accent-blue);
  text-align: center;
  font-weight: 500;
  margin: 0 14px 12px;
}

.message {
  font-size: 12px;
  color: var(--text-secondary);
  text-align: center;
  padding: 8px 14px;
  margin: 0 14px;
  min-height: 20px;
  transition: all var(--transition-fast);
}

.message.error {
  color: var(--accent-red);
}

#map {
  flex: 1;
  background: var(--map-bg);
  transition: background var(--transition-normal);
}

.leaflet-control-attribution {
  background: rgba(255, 255, 255, 0.85) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 4px 10px !important;
  font-size: 11px;
  border-radius: 8px !important;
  border: 1px solid var(--border-color);
}

.leaflet-popup-content-wrapper {
  background: var(--card-bg) !important;
  border-radius: 10px !important;
  box-shadow: var(--shadow-lg) !important;
  border: var(--glass-border);
}

.leaflet-popup-content {
  margin: 12px 16px !important;
  font-size: 13px;
  color: var(--text-primary);
  line-height: 1.5;
}

.leaflet-popup-tip {
  background: var(--card-bg) !important;
}

.service-status {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  color: #fff;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.service-status:hover {
  background: rgba(255, 255, 255, 0.3);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 6px rgba(74, 222, 128, 0.6);
}

.service-status.offline .status-dot {
  background: #f87171;
  box-shadow: 0 0 6px rgba(248, 113, 113, 0.6);
}

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--card-bg);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  border: var(--glass-border);
  max-width: 400px;
  width: 100%;
  max-height: 90vh;
  overflow: hidden;
  animation: modalSlideUp var(--transition-normal) ease;
}

.modal-content.modal-small {
  max-width: 280px;
}

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

.generating-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px 20px;
  text-align: center;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.generating-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px 0;
}

.generating-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

.welcome-content {
  padding: 32px 24px 24px;
  text-align: center;
}

.welcome-content h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 20px 0;
}

.welcome-features {
  list-style: none;
  padding: 0;
  margin: 0 0 24px 0;
  text-align: left;
}

.welcome-features li {
  padding: 8px 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  border-bottom: 1px solid var(--border-color);
}

.welcome-features li:last-child {
  border-bottom: none;
}

.welcome-content .btn-primary {
  width: auto;
  padding: 10px 40px;
}

.current-location-marker {
  background: transparent !important;
  border: none !important;
}

.location-pulse {
  width: 20px;
  height: 20px;
  background: var(--accent-blue);
  border: 3px solid white;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.3);
  animation: locationPulse 2s ease-in-out infinite;
}

@keyframes locationPulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.3); }
  50% { box-shadow: 0 0 0 8px rgba(59, 130, 246, 0.1); }
}

@media screen and (max-width: 1024px) {
  :root {
    --sidebar-width: 300px;
  }
}

@media screen and (max-width: 768px) {
  #app {
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
  }

  .sidebar {
    width: 100%;
    min-width: 100%;
    height: auto;
    max-height: 42vh;
    min-height: 160px;
    border-right: none;
    border-bottom: var(--glass-border);
    display: flex;
    flex-direction: column;
  }

  .sidebar-header {
    padding: 10px 14px;
    flex-shrink: 0;
    min-height: 48px;
  }

  .sidebar-header h1 {
    font-size: 16px;
  }

  .card {
    margin: 6px 10px;
    flex-shrink: 0;
  }

  .card-header {
    padding: 11px 14px;
    font-size: 13px;
  }

  .card-body {
    padding: 12px;
  }

  .sidebar {
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  #map {
    flex: 1;
    min-height: 0;
  }

  .route-actions {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  .action-buttons {
    margin: 8px 10px;
    gap: 8px;
  }

  .btn-generate {
    padding: 12px;
    font-size: 13px;
  }

  .btn-preview {
    padding: 10px;
    font-size: 12px;
  }

  .distance-display {
    font-size: 18px;
    padding: 12px;
  }

  .preview-chart canvas {
    height: 60px !important;
  }

  .modal-content {
    margin: 16px;
    max-height: 85vh;
  }

  .btn-secondary,
  .mode-btn,
  .card-header,
  .btn-generate,
  .btn-preview,
  .btn-location {
    min-height: 44px;
    touch-action: manipulation;
  }

  .sidebar {
    scrollbar-width: thin;
    scrollbar-color: rgba(148, 163, 184, 0.3) transparent;
  }

  .sidebar::-webkit-scrollbar {
    width: 4px;
  }

  .sidebar::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.3);
    border-radius: 2px;
  }

  .leaflet-control-zoom a {
    width: 40px !important;
    height: 40px !important;
    line-height: 40px !important;
    font-size: 18px !important;
  }

  .leaflet-container {
    touch-action: pan-x pan-y;
  }

  .export-time-row {
    padding: 10px;
  }

  .export-row-2 input {
    width: 45px;
  }

  .tianditu-key-box {
    flex-wrap: wrap;
  }

  .tianditu-key-box input {
    min-width: 120px;
  }
}

@media screen and (max-width: 480px) {
  .sidebar {
    max-height: 45vh;
  }

  .sidebar-header {
    padding: 8px 12px;
  }

  .sidebar-header h1 {
    font-size: 14px;
  }

  .card {
    margin: 4px 8px;
  }

  .card-header {
    padding: 10px 12px;
    font-size: 12px;
  }

  .card-body {
    padding: 10px;
  }

  .route-actions {
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
  }

  .btn-secondary {
    padding: 8px 6px;
    font-size: 11px;
  }

  .action-buttons {
    margin: 6px 8px;
    gap: 6px;
  }

  .btn-generate {
    font-size: 13px;
    padding: 10px;
  }

  .param-grid {
    gap: 8px;
  }

  .param-item input {
    font-size: 14px;
    padding: 10px;
  }

  .export-time-row {
    flex-wrap: wrap;
  }

  .checkbox-grid {
    grid-template-columns: 1fr;
  }

  .service-status {
    padding: 4px 10px;
    font-size: 11px;
  }

  .status-dot {
    width: 6px;
    height: 6px;
  }

  .message {
    font-size: 11px;
    padding: 6px 10px;
  }
}

@media screen and (max-width: 360px) {
  .sidebar-header h1 {
    font-size: 13px;
  }

  .card-header {
    padding: 8px 10px;
    font-size: 11px;
  }

  .param-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .param-item {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .param-item label {
    flex: 1;
    margin-bottom: 0;
  }

  .param-item input {
    width: 100px;
    flex-shrink: 0;
  }
}

@media screen and (min-width: 1400px) {
  :root {
    --sidebar-width: 380px;
  }

  .card {
    margin: 12px 18px;
  }

  .card-header {
    padding: 14px 18px;
    font-size: 15px;
  }

  .card-body {
    padding: 16px 18px;
  }

  .param-grid {
    gap: 14px;
  }

  .route-actions {
    gap: 10px;
  }

  .btn-secondary {
    padding: 10px 14px;
    font-size: 13px;
  }

  .distance-display {
    font-size: 24px;
    padding: 16px;
  }

  .action-buttons {
    margin: 14px 18px;
  }
}

@media print {
  .sidebar {
    display: none;
  }

  #map {
    width: 100% !important;
    height: 100% !important;
  }
}