/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: #333333;
  background-color: #ffffff;
  overflow: hidden;
}

/* ============================================
   LAYOUT
   ============================================ */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
}

/* Top header bar */
header {
  display: flex;
  align-items: center;
  gap: 27px;
  padding: 18px 32px;
  background: linear-gradient(to bottom, #ffffff 0%, #f8f9fa 100%);
  color: #2c3e50;
  min-height: 95px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  position: relative;
  border-bottom: 1px solid #e1e4e8;
}

/* Subtle accent line at top */
header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(to right, #5b6b8f 0%, #4fb3a8 50%, #5b6b8f 100%);
  opacity: 0.85;
}

header img {
  height: 64px;
  max-width: 600px;
  margin: 0;
  object-fit: contain;
  position: relative;
  z-index: 1;
  transition: opacity 0.2s ease;
}

header img:hover {
  opacity: 0.9;
}

/* Vertical separator */
header::after {
  content: '';
  width: 1px;
  height: 53px;
  background: linear-gradient(to bottom,
    transparent 0%,
    rgba(44, 62, 80, 0.15) 20%,
    rgba(44, 62, 80, 0.15) 80%,
    transparent 100%);
  position: relative;
  z-index: 1;
}

header h1 {
  font-size: 27px;
  font-weight: 600;
  letter-spacing: -0.2px;
  position: relative;
  z-index: 1;
  color: #2c3e50;
}

header h1 .header-year {
  font-weight: 700;
  color: #5b6b8f;
  letter-spacing: 0.5px;
}

header h1 .header-app {
  font-weight: 500;
  color: #4a5568;
}

/* Main container with sidebar and map */
#container {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Left sidebar for results */
#sidebar {
  width: 350px;
  background-color: #F5F5F5;
  overflow-y: auto;
  padding: 20px;
  border-right: 1px solid #CCCCCC;
}

/* Map container */
#map {
  flex: 1;
  position: relative;
}

/* ============================================
   SIDEBAR COMPONENTS
   ============================================ */
.sidebar-section {
  margin-bottom: 25px;
}

.section-heading {
  font-size: 16px;
  font-weight: bold;
  color: #1565C0;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.divider {
  height: 1px;
  background-color: #CCCCCC;
  margin: 20px 0;
}

/* Project name input */
#projectName {
  width: 100%;
  padding: 10px;
  border: 1px solid #CCCCCC;
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
}

#projectName:focus {
  outline: none;
  border-color: #1565C0;
  box-shadow: 0 0 0 2px rgba(21, 101, 192, 0.1);
}

/* Project name section - hidden until drawing complete */
#projectNameSection {
  display: none;
}

#projectNameSection.visible {
  display: block;
}

/* Results lists */
.results-list {
  list-style: none;
  padding-left: 0;
}

.results-list li {
  padding: 5px 0;
  padding-left: 15px;
  position: relative;
}

.results-list li:before {
  content: "•";
  position: absolute;
  left: 0;
  color: #1565C0;
  font-weight: bold;
}

.empty-state {
  color: #666666;
  font-style: italic;
  padding: 5px 0;
}

/* Results card styling */
.results-card {
  background-color: white;
  border-radius: 6px;
  padding: 12px;
  margin-bottom: 15px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  border-left: 3px solid #1565C0;
}

.results-card.routes { border-left-color: #0066CC; }
.results-card.zones { border-left-color: #FF8C00; }
.results-card.bridges { border-left-color: #DC143C; }

.results-card .section-heading {
  margin-bottom: 8px;
  font-size: 14px;
}

.result-count {
  display: inline-block;
  background-color: #E3F2FD;
  color: #1565C0;
  font-size: 11px;
  font-weight: bold;
  padding: 2px 8px;
  border-radius: 10px;
  margin-left: 8px;
}

.results-card.routes .result-count { background-color: #E3F2FD; color: #0066CC; }
.results-card.zones .result-count { background-color: #FFF3E0; color: #E65100; }
.results-card.bridges .result-count { background-color: #FFEBEE; color: #C62828; }

.result-card-body {
  padding: 10px;
  background-color: white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  margin-top: 10px;
}

/* Bridges table */
#bridgesTable {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  background-color: white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

#bridgesTable th {
  background-color: #E6F2FF;
  padding: 10px;
  text-align: left;
  font-weight: bold;
  border: 1px solid #CCCCCC;
  font-size: 12px;
}

#bridgesTable td {
  padding: 8px 10px;
  border: 1px solid #CCCCCC;
  font-size: 12px;
}

#bridgesTable tr:nth-child(even) {
  background-color: #F9F9F9;
}

/* Buttons */
.btn {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.2s;
  font-family: inherit;
}

.btn-primary {
  background-color: #1565C0;
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background-color: #0D47A1;
}

.btn-primary:disabled {
  background-color: #CCCCCC;
  cursor: not-allowed;
}

.btn-secondary {
  background-color: #666666;
  color: white;
  margin-top: 10px;
}

.btn-secondary:hover {
  background-color: #444444;
}

.btn-draw {
  background-color: #1565C0;
  color: white;
  margin-bottom: 10px;
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: left;
}

.btn-draw:hover {
  background-color: #0D47A1;
}

.btn-draw.active {
  background-color: #43A047;
  box-shadow: 0 0 0 3px rgba(67, 160, 71, 0.3);
}

.btn-draw.active:hover {
  background-color: #2E7D32;
}

/* Helper text */
.helper-text {
  font-size: 12px;
  color: #666666;
  margin-top: 5px;
}

/* ============================================
   LOADING OVERLAY
   ============================================ */
#loadingOverlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.spinner {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #004C97;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

#loadingText {
  margin-top: 20px;
  font-size: 16px;
  color: #333333;
}

/* ============================================
   RESPONSIVE WARNING
   ============================================ */
#mobileWarning {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: white;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  z-index: 10000;
}

@media (max-width: 1024px) {
  #mobileWarning {
    display: flex;
  }

  #app {
    display: none;
  }
}

/* ============================================
   LEAFLET CUSTOMIZATIONS
   ============================================ */
.leaflet-draw-toolbar a {
  background-color: #1565C0;
}

.leaflet-draw-draw-polyline {
  background-color: #1565C0;
}

/* Custom tooltip styling */
.leaflet-tooltip {
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
  border: none;
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 12px;
}

/* Layer control styling */
.leaflet-control-layers {
  background-color: white;
  border-radius: 4px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  padding: 6px 10px;
}

.leaflet-control-layers-list {
  font-size: 11px;
}

.leaflet-control-layers label {
  display: flex;
  align-items: center;
  gap: 5px;
  margin: 3px 0;
  cursor: pointer;
}

.leaflet-control-layers-overlays {
  padding-top: 5px;
}

/* Scale control styling */
.leaflet-control-scale-line {
  background-color: rgba(255,255,255,0.8);
  border: 1px solid #666;
  border-top: none;
  font-size: 11px;
  padding: 2px 5px;
}

/* ============================================
   MEASUREMENT TOOL
   ============================================ */

/* Measurement Tool Control */
.leaflet-control-measure {
  background: white;
  border-radius: 4px;
  box-shadow: 0 1px 5px rgba(0,0,0,0.3);
  margin-top: 10px; /* Space below zoom control */
}

.leaflet-control-measure a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  text-decoration: none;
  color: #333;
  background-color: white;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.leaflet-control-measure a:hover {
  background-color: #f4f4f4;
}

.leaflet-control-measure a.active {
  background-color: #1565C0;
  color: white;
}

.leaflet-control-measure a.active:hover {
  background-color: #0D47A1;
}

/* Measurement tooltip styling */
.measurement-total-label {
  background-color: rgba(255, 140, 0, 0.9);
  color: white;
  border: 2px solid white;
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 13px;
  font-weight: bold;
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.measurement-total-label::before {
  border-top-color: rgba(255, 140, 0, 0.9);
}

/* ============================================
   TUTORIAL POPUP
   ============================================ */
#tutorialPopup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  padding: 30px;
  max-width: 500px;
  z-index: 10001;
  display: none;
}

#tutorialPopup.visible {
  display: block;
}

#tutorialOverlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 10000;
  display: none;
}

#tutorialOverlay.visible {
  display: block;
}

#tutorialPopup h2 {
  margin: 0 0 20px 0;
  color: #1565C0;
  font-size: 22px;
  font-weight: bold;
}

#tutorialPopup ul {
  list-style: none;
  padding: 0;
  margin: 0 0 25px 0;
}

#tutorialPopup li {
  padding: 12px 0 12px 30px;
  position: relative;
  line-height: 1.6;
  color: #333;
  font-size: 15px;
}

#tutorialPopup li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #1565C0;
  font-weight: bold;
  font-size: 18px;
}

#tutorialPopup .tutorial-close {
  width: 100%;
  padding: 12px;
  background-color: #1565C0;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 15px;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.2s;
}

#tutorialPopup .tutorial-close:hover {
  background-color: #0D47A1;
}

/* ============================================
   LEAFLET MAP CUSTOMIZATION
   ============================================ */
/* Remove black selection box from polygons and paths */
.leaflet-interactive {
  outline: none !important;
  outline-style: none !important;
  outline-width: 0 !important;
}

svg.leaflet-zoom-animated path,
svg.leaflet-zoom-animated g path,
.leaflet-overlay-pane svg path,
.leaflet-overlay-pane path {
  outline: none !important;
  outline-style: none !important;
  outline-width: 0 !important;
}

/* Remove focus outline from all SVG elements */
svg *:focus {
  outline: none !important;
}

path:focus {
  outline: none !important;
}

/* ============================================
   DATASET INFO TOOLTIP
   ============================================ */
/* Info icon container */
.info-icon {
  display: inline-block;
  position: relative;
  cursor: help;
  float: right;
  width: 18px;
  height: 18px;
  margin-left: 8px;
}

/* Circle with 'i' inside */
.info-icon-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: #1565C0;
  color: white;
  font-size: 13px;
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: normal;
  font-style: normal;
  line-height: 1;
  text-transform: none;
  transition: background-color 0.2s;
}

.info-icon:hover .info-icon-circle {
  background-color: #0D47A1;
}

/* Tooltip box */
.info-tooltip {
  display: none;
  position: absolute;
  right: 25px;
  top: -5px;
  background-color: #2c3e50;
  color: white;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 12px;
  line-height: 1.5;
  width: 280px;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  font-weight: normal;
  text-transform: none;
}

/* Tooltip arrow pointing to the right (towards icon) */
.info-tooltip::after {
  content: '';
  position: absolute;
  top: 10px;
  right: -6px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 6px 0 6px 6px;
  border-color: transparent transparent transparent #2c3e50;
}

/* Show tooltip on hover */
.info-icon:hover .info-tooltip {
  display: block;
}