:root {
  --bg: #f1f5f9;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-secondary: #64748b;
  --primary: #0d9488;
  --primary-light: #ccfbf1;
  --accent: #f59e0b;
  --gain: #16a34a;
  --loss: #dc2626;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.12), 0 2px 4px rgba(0, 0, 0, 0.08);
  --radius: 8px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: 'SF Mono', 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

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

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
}

/* Header */
#app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: 52px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 1000;
}

.header-left h1 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

#track-select {
  font-family: var(--font);
  font-size: 13px;
  padding: 6px 28px 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  max-width: 280px;
}

#track-select:hover {
  border-color: var(--primary);
}

.header-btn, .file-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
}

.header-btn:hover, .file-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.header-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.header-btn.active:hover {
  background: #0f766e;
  color: white;
}

.file-btn {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.file-btn:hover {
  background: #0f766e;
  color: white;
}

.export-btn svg {
  transition: transform 0.15s;
}
.export-btn:hover svg {
  transform: translateY(1px);
}

/* Main layout */
#app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* Map */
#map-container {
  position: relative;
  flex: 1;
  min-height: 0;
}

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

.leaflet-control-attribution {
  font-size: 10px !important;
}

/* Stats overlay */
#stats-overlay {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 800;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  padding: 10px 14px;
  box-shadow: var(--shadow-lg);
  min-width: 240px;
  border: 1px solid rgba(226, 232, 240, 0.6);
}

#stats-toggle {
  display: none;
}

/* Locate control */
.locate-control a {
  display: flex !important;
  align-items: center;
  justify-content: center;
  width: 34px !important;
  height: 34px !important;
  color: #333;
}

.locate-control a svg {
  display: block;
}

.locate-control a.located svg {
  color: #3b82f6;
}

.stat-row {
  display: flex;
  gap: 16px;
}

.stat-row + .stat-row {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

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

.stat-value {
  display: block;
  font-size: 14px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  white-space: nowrap;
}

.stat-label {
  display: block;
  font-size: 10px;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 1px;
}

.stat.gain .stat-value { color: var(--gain); }
.stat.loss .stat-value { color: var(--loss); }

/* Elevation chart */
#chart-container {
  position: relative;
  height: 180px;
  flex-shrink: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 8px 12px 4px;
}

#elevation-chart {
  width: 100%;
  height: 100%;
}

#chart-tooltip {
  position: absolute;
  pointer-events: none;
  background: rgba(15, 23, 42, 0.9);
  color: white;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 6px;
  white-space: nowrap;
  z-index: 10;
  transform: translate(-50%, -100%);
  margin-top: -8px;
  line-height: 1.5;
}

/* Start / End markers */
.marker-start, .marker-end {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
  color: white;
  border: 2px solid white;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.marker-start { background: var(--gain); }
.marker-end { background: var(--loss); }

/* Map hover tooltip */
.hover-tooltip {
  background: rgba(15, 23, 42, 0.88) !important;
  color: white !important;
  border: none !important;
  border-radius: 6px !important;
  padding: 4px 8px !important;
  font-size: 12px !important;
  font-family: var(--font) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2) !important;
  line-height: 1.4 !important;
}

.hover-tooltip::before {
  border-top-color: rgba(15, 23, 42, 0.88) !important;
}

/* Photo markers on map */
.photo-marker-wrapper {
  background: none !important;
  border: none !important;
}

.photo-marker {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  border: 2.5px solid white;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  background: #e2e8f0;
}

.photo-marker:hover {
  transform: scale(1.3);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.45);
  z-index: 900 !important;
}

.photo-marker img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Lightbox */
#lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  cursor: pointer;
}

#lb-image {
  max-width: 90vw;
  max-height: 82vh;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  cursor: default;
}

#lb-caption {
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
  margin-top: 10px;
  text-align: center;
}

#lb-close, #lb-prev, #lb-next {
  position: absolute;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  transition: color 0.15s;
  z-index: 10001;
}

#lb-close:hover, #lb-prev:hover, #lb-next:hover {
  color: white;
}

#lb-close {
  top: 16px;
  right: 20px;
  font-size: 36px;
  line-height: 1;
}

#lb-prev, #lb-next {
  top: 50%;
  transform: translateY(-50%);
  font-size: 48px;
  line-height: 1;
  padding: 8px;
}

#lb-prev { left: 16px; }
#lb-next { right: 16px; }

/* POI placement mode cursor */
.poi-mode-active #map { cursor: crosshair !important; }
.poi-mode-active .leaflet-grab { cursor: crosshair !important; }

/* POI markers */
.poi-marker-wrapper {
  background: none !important;
  border: none !important;
}

.poi-marker-icon {
  width: 28px;
  height: 28px;
  background: var(--accent);
  border: 2.5px solid white;
  border-radius: 50% 50% 50% 4px;
  transform: rotate(-45deg);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s;
}

.poi-marker-icon::after {
  content: '';
  width: 8px;
  height: 8px;
  background: white;
  border-radius: 50%;
  transform: rotate(45deg);
}

.poi-marker-wrapper:hover .poi-marker-icon {
  transform: rotate(-45deg) scale(1.15);
}

/* POI popup form */
.poi-popup .leaflet-popup-content-wrapper {
  border-radius: 10px !important;
  padding: 0 !important;
  overflow: hidden;
  box-shadow: var(--shadow-lg) !important;
}

.poi-popup .leaflet-popup-content {
  margin: 0 !important;
  min-width: 240px;
}

.poi-popup .leaflet-popup-tip {
  box-shadow: none !important;
}

.poi-form {
  padding: 14px 16px;
  font-family: var(--font);
}

.poi-form-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.poi-form label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 3px;
}

.poi-form input,
.poi-form textarea {
  width: 100%;
  font-family: var(--font);
  font-size: 13px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 5px;
  outline: none;
  transition: border-color 0.15s;
  color: var(--text);
}

.poi-form input:focus,
.poi-form textarea:focus {
  border-color: var(--primary);
}

.poi-form textarea {
  resize: vertical;
  min-height: 50px;
}

.poi-form .field + .field {
  margin-top: 8px;
}

.poi-form-actions {
  display: flex;
  gap: 6px;
  margin-top: 12px;
}

.poi-form-actions button {
  flex: 1;
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 0;
  border-radius: 5px;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

.poi-btn-save {
  background: var(--primary);
  color: white;
}
.poi-btn-save:hover { background: #0f766e; }

.poi-btn-delete {
  background: #fee2e2;
  color: var(--loss);
}
.poi-btn-delete:hover { background: #fecaca; }

.poi-btn-cancel {
  background: var(--bg);
  color: var(--text-secondary);
}
.poi-btn-cancel:hover { background: var(--border); }

.poi-info {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* POI panel (list) */
#poi-panel {
  position: fixed;
  bottom: 184px;
  left: 10px;
  z-index: 800;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-radius: var(--radius) var(--radius) 0 0;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(226, 232, 240, 0.6);
  width: 260px;
  max-height: 50%;
  display: flex;
  flex-direction: column;
}

.poi-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
}

.poi-panel-header button {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--text-secondary);
  line-height: 1;
}

#poi-list {
  overflow-y: auto;
  flex: 1;
}

.poi-list-item {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.1s;
}

.poi-list-item:hover {
  background: var(--bg);
}

.poi-list-item:last-child {
  border-bottom: none;
}

.poi-list-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.poi-list-comment {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.poi-list-empty {
  padding: 16px 12px;
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
}

/* ─── Route Planner Panel ─── */

#route-panel {
  position: fixed;
  top: 62px;
  left: 12px;
  z-index: 1200;
  width: 250px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(226, 232, 240, 0.6);
  overflow: hidden;
  max-height: calc(100vh - 80px);
  display: flex;
  flex-direction: column;
}

.route-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  flex-shrink: 0;
}

.route-header button {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--text-secondary);
  line-height: 1;
}

.route-body {
  padding: 10px 12px;
  overflow-y: auto;
  flex: 1;
}

.route-profile-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.route-profile-row label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

#route-profile {
  flex: 1;
  font-family: var(--font);
  font-size: 12px;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--surface);
  color: var(--text);
}

#route-waypoints-list {
  max-height: 150px;
  overflow-y: auto;
}

.route-wp {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
  font-size: 12px;
  color: var(--text);
}

.route-wp-num {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.route-wp-coord {
  flex: 1;
  font-size: 11px;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

.route-wp-del {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1;
  padding: 2px;
}

.route-wp-del:hover { color: var(--loss); }

.route-hint {
  font-size: 11px;
  color: var(--text-secondary);
  padding: 6px 0;
  text-align: center;
}

.route-stats {
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  padding: 6px 0;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}

.route-actions {
  display: flex;
  gap: 6px;
  margin: 8px 0 6px;
}

.route-btn-undo {
  background: var(--bg);
  color: var(--text);
}
.route-btn-undo:hover:not(:disabled) { background: var(--border); }

.route-btn-clear {
  background: #fee2e2;
  color: var(--loss);
}
.route-btn-clear:hover:not(:disabled) { background: #fecaca; }

.route-key-row {
  border-top: 1px solid var(--border);
  padding-top: 8px;
  margin-top: 6px;
}

.route-key-row label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 3px;
}

.route-key-row input {
  width: 100%;
  font-family: var(--font);
  font-size: 11px;
  padding: 5px 6px;
  border: 1px solid var(--border);
  border-radius: 5px;
  outline: none;
  color: var(--text);
}

.route-key-row input:focus { border-color: var(--primary); }

.route-key-row a {
  display: inline-block;
  font-size: 10px;
  margin-top: 4px;
  color: var(--primary);
  text-decoration: none;
}

.route-key-row a:hover { text-decoration: underline; }

.route-mode-active #map { cursor: crosshair !important; }
.route-mode-active .leaflet-grab { cursor: crosshair !important; }

.route-marker-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid white;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

@media (max-width: 640px) {
  #route-panel { left: 8px; width: 220px; top: 54px; }
}

/* ─── Recording FAB & Panel ─── */

#rec-fab {
  position: absolute;
  bottom: 12px;
  right: 12px;
  z-index: 900;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #dc2626;
  transition: background 0.15s, color 0.15s, transform 0.15s;
}

#rec-fab:hover {
  transform: scale(1.1);
}

#rec-fab.recording {
  background: #dc2626;
  border-color: #dc2626;
  color: white;
  animation: rec-blink 1.2s ease-in-out infinite;
}

#rec-fab.recording:hover {
  color: white;
}

@keyframes rec-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

#rec-panel {
  position: absolute;
  bottom: 12px;
  right: 12px;
  z-index: 900;
  width: 220px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(226, 232, 240, 0.6);
  overflow: hidden;
}

.rec-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
}

.rec-header button {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--text-secondary);
  line-height: 1;
}

.rec-body {
  padding: 10px 12px;
}

.rec-stats {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.rec-stat {
  flex: 1;
  text-align: center;
}

.rec-stat-value {
  display: block;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

.rec-stat-label {
  display: block;
  font-size: 9px;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 1px;
}

.rec-actions {
  display: flex;
  gap: 6px;
  margin-bottom: 6px;
}

.rec-btn {
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  padding: 7px 0;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
  text-align: center;
}

.rec-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.rec-actions .rec-btn {
  flex: 1;
}

.rec-btn-start {
  background: #dc2626;
  color: white;
}
.rec-btn-start:hover:not(:disabled) { background: #b91c1c; }

.rec-btn-pause {
  background: #f59e0b;
  color: white;
}
.rec-btn-pause:hover:not(:disabled) { background: #d97706; }

.rec-btn-resume {
  background: #16a34a;
  color: white;
}
.rec-btn-resume:hover:not(:disabled) { background: #15803d; }

.rec-btn-stop {
  background: #475569;
  color: white;
}
.rec-btn-stop:hover:not(:disabled) { background: #334155; }

.rec-btn-download {
  width: 100%;
  background: var(--primary);
  color: white;
  padding: 8px 0;
}
.rec-btn-download:hover { background: #0f766e; }

@media (max-width: 640px) {
  #rec-fab { bottom: 10px; right: 8px; width: 40px; height: 40px; }
  #rec-panel { bottom: 10px; right: 8px; width: 200px; }
}

/* Drop overlay */
#drop-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(13, 148, 136, 0.15);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.drop-content {
  text-align: center;
  color: var(--primary);
}

.drop-content svg {
  margin-bottom: 12px;
  stroke: var(--primary);
}

.drop-content p {
  font-size: 18px;
  font-weight: 600;
}

/* Loading */
#loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(241, 245, 249, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* Utility */
.hidden { display: none !important; }

/* Responsive */
@media (max-width: 640px) {
  #app-header { padding: 0 8px; height: 44px; }
  .header-left h1 { font-size: 13px; }
  .header-right { gap: 5px; }
  #track-select { max-width: 110px; font-size: 12px; padding: 5px 22px 5px 6px; }
  .btn-label { display: none; }
  .header-btn, .file-btn {
    padding: 6px;
    gap: 0;
    min-width: 32px;
    justify-content: center;
  }
  .header-btn svg, .file-btn svg { display: block; }
  #stats-overlay { top: 6px; right: 6px; padding: 0; min-width: 200px; }
  #stats-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
  }
  #stats-toggle-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 0.04em;
  }
  #stats-toggle svg {
    transition: transform 0.2s;
    color: var(--text-secondary);
  }
  #stats-overlay.collapsed #stats-toggle svg {
    transform: rotate(180deg);
  }
  #stats-body {
    padding: 0 10px 8px;
  }
  #stats-overlay.collapsed #stats-body {
    display: none;
  }
  .stat-value { font-size: 12px; }
  .stat-label { font-size: 9px; }
  .stat-row { gap: 10px; }
  #chart-container { height: 140px; }
}

@media (max-width: 400px) {
  #stats-overlay { left: 6px; right: 6px; min-width: 0; }
}