.sidebar {
  width: var(--sidebar-width);
  background: var(--bg);
  box-shadow: 2px 0 4px rgba(0, 0, 0, 0.06);
  display: flex;
  flex-shrink: 0;
  transition: width 0.25s ease;
  position: relative;
  z-index: 800;
}

.sidebar.collapsed {
  width: 0;
  box-shadow: none;
}

.sidebar-inner {
  width: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.sidebar.collapsed .sidebar-inner {
  visibility: hidden;
}

.sidebar-toggle {
  position: absolute;
  left: var(--sidebar-width);
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 36px;
  border: none;
  border-radius: 0 6px 6px 0;
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  padding: 0;
  transition: left 0.25s ease;
}

.sidebar-toggle::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: none;
  z-index: -1;
}

.sidebar-toggle:hover {
  color: var(--text);
}

.sidebar-toggle:hover::after {
  background: var(--bg-secondary);
}

.sidebar.collapsed ~ .sidebar-toggle {
  left: 0;
}

.sidebar-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  padding: 0 8px;
}

.tab-btn {
  flex: 1;
  padding: 12px 0;
  border: none;
  background: none;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-btn:hover {
  color: var(--text);
}

.tab-content {
  display: none;
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.tab-content.active {
  display: block;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
}

.empty-state .hint {
  font-size: 13px;
  margin-top: 8px;
}

/* Track list */
.track-list-item {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.track-list-item:hover {
  border-color: var(--primary-light);
  background: var(--bg-secondary);
}

.track-list-item.active {
  border-color: var(--primary);
  background: rgba(79, 70, 229, 0.05);
}

.track-item-name {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 2px;
}

.track-item-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.track-item-stats {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  gap: 10px;
}

.delete-track-btn {
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: none;
  cursor: pointer;
  font-size: 11px;
  color: #ef4444;
  flex-shrink: 0;
}

.delete-track-btn:hover {
  background: #fef2f2;
}

/* Track info panel */
.track-info-panel {
  font-size: 14px;
}

.track-name {
  font-size: 18px;
  font-weight: 600;
  padding: 4px 0 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.info-section {
  margin-bottom: 16px;
}

.info-section h4 {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.info-item {
  padding: 8px;
  background: var(--bg-secondary);
  border-radius: 6px;
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-icon {
  font-size: 22px;
  flex-shrink: 0;
  line-height: 1;
}

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

.info-item .label {
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 3px;
}

.info-item .value {
  font-size: 16px;
  font-weight: 600;
  margin-top: 1px;
}

/* Time help tooltip */
.time-help {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid var(--border);
  font-size: 9px;
  color: var(--text-secondary);
  cursor: help;
  margin-left: auto;
  position: relative;
}

.time-help:hover::after {
  content: attr(data-tip);
  position: absolute;
  top: 100%;
  right: -8px;
  margin-top: 6px;
  width: 200px;
  padding: 8px 10px;
  background: #1e293b;
  color: #fff;
  font-size: 11px;
  line-height: 1.5;
  border-radius: 6px;
  white-space: pre-line;
  z-index: 100;
  pointer-events: none;
  box-shadow: var(--shadow-lg);
}

.time-help:hover::before {
  content: '';
  position: absolute;
  top: 100%;
  right: 2px;
  margin-top: 1px;
  border: 5px solid transparent;
  border-bottom-color: #1e293b;
  z-index: 101;
  pointer-events: none;
}

/* Elevation warning badge */
.elevation-warn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #ef4444;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  cursor: help;
  position: absolute;
  top: 4px;
  right: 4px;
  line-height: 1;
}

.elevation-warn-fair {
  background: #f59e0b;
  color: #fff;
}

.elevation-warn:hover::after {
  content: attr(data-tip);
  position: absolute;
  top: 100%;
  right: -8px;
  margin-top: 6px;
  width: 180px;
  padding: 8px 10px;
  background: #1e293b;
  color: #fff;
  font-size: 11px;
  line-height: 1.5;
  border-radius: 6px;
  white-space: pre-line;
  z-index: 100;
  pointer-events: none;
  box-shadow: var(--shadow-lg);
}

.elevation-warn:hover::before {
  content: '';
  position: absolute;
  top: 100%;
  right: 4px;
  margin-top: 1px;
  border: 5px solid transparent;
  border-bottom-color: #1e293b;
  z-index: 101;
  pointer-events: none;
}

/* Settings inside sidebar */
.settings-group {
  margin-bottom: 16px;
}

.settings-label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}

.settings-select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  background: white;
  cursor: pointer;
}

.settings-select:focus {
  outline: none;
  border-color: var(--primary);
}

.settings-color {
  width: 100%;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  padding: 2px;
}

.settings-range {
  width: calc(100% - 60px);
  vertical-align: middle;
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
}

.checkbox-item input {
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* Tile cache */
.cache-stats {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.cache-clear-btn {
  width: 100%;
  padding: 8px 0;
  border: 1px solid #ef4444;
  border-radius: 6px;
  background: none;
  color: #ef4444;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.cache-clear-btn:hover {
  background: #fef2f2;
}

.cache-clear-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Trail assessment */
.trail-assessment {
  min-height: 40px;
}

.assessment-loading {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 13px;
  padding: 12px 0;
}

.assessment-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.assessment-error {
  color: var(--text-secondary);
  font-size: 13px;
  padding: 12px 0;
}

.assessment-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.assessment-difficulty {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
}

.assessment-source {
  font-size: 11px;
  color: #ef4444;
  margin-left: auto;
  border: 1px solid #ef4444;
  border-radius: 4px;
  padding: 2px 8px;
  font-weight: 500;
  cursor: default;
  position: relative;
  animation: source-blink 2s ease-in-out infinite;
}

@keyframes source-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.assessment-source:hover {
  animation: none;
  opacity: 1;
}

.source-tooltip {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 200px;
  padding: 8px 10px;
  background: #1e293b;
  color: #fff;
  font-size: 11px;
  font-weight: 400;
  line-height: 1.5;
  border-radius: 6px;
  z-index: 100;
  pointer-events: none;
  box-shadow: var(--shadow-lg);
}

.assessment-source:hover .source-tooltip {
  display: block;
}

.assessment-source:hover::before {
  content: '';
  position: absolute;
  top: 100%;
  right: 12px;
  margin-top: 3px;
  border: 5px solid transparent;
  border-bottom-color: #1e293b;
  z-index: 101;
  pointer-events: none;
}

.assessment-surfaces {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.surface-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12px;
}

.surface-icon {
  font-size: 14px;
  line-height: 1;
}

.surface-label {
  color: var(--text);
}

.surface-ratio {
  color: var(--text-secondary);
  font-size: 11px;
}

.assessment-risks {
  margin-bottom: 8px;
}

.risks-title,
.tips-title {
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 4px;
}

.assessment-risks ul {
  margin: 0;
  padding-left: 18px;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.assessment-tips p {
  margin: 0;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Recommendations */
.recommend-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.recommend-icon {
  font-size: 18px;
}

.recommend-item {
  border-left: 3px solid #f59e0b;
}