/* Modern, robust, responsive styles for Long Trails App */
:root {
  --bg-primary: #1a1d23;
  --bg-secondary: #25282f;
  --bg-tertiary: #2d3039;
  --border-color: #3d4048;
  --text-primary: #ffffff;
  --text-secondary: #d9dde5;
  --accent: #4a9eff;
  --page-padding: clamp(16px, 4vw, 48px);
}
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.page-header {
  margin: 1.5rem auto 0;
  padding: 0 var(--page-padding);
  width: 100%;
}
.page-breadcrumbs {
  width: 100%;
  margin: 0.35rem auto 0.75rem;
  padding: 0 var(--page-padding);
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.page-breadcrumbs ol {
  display: flex;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-breadcrumbs li + li::before {
  content: "/";
  color: var(--text-secondary);
  margin-right: 6px;
}
.page-breadcrumbs a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}
.page-breadcrumbs a:hover,
.page-breadcrumbs a:focus-visible {
  text-decoration: underline;
}
.page-header h1 {
  margin: 0 0 0.35rem;
  font-size: 2rem;
}
.page-header p {
  margin: 0.2rem 0;
  color: var(--text-secondary);
  line-height: 1.5;
}
#app {
  width: 100%;
  margin: 1.5rem auto 2rem;
  padding: 0 var(--page-padding) 2rem;
  display: grid;
  grid-template-columns: minmax(280px, 400px) minmax(0, 1fr);
  gap: clamp(16px, 2.5vw, 24px);
  flex: 1 1 auto;
  min-height: 0;
  align-items: stretch;
}
.sidebar {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  overflow-y: auto;
  min-height: 0;
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.map-panel {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-secondary);
  min-height: 420px;
}
#map {
  height: 100%;
  width: 100%;
  min-height: 360px;
}
.filter-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  margin-bottom: 16px;
}
.filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.filter-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}
.filter-input,
.filter-select {
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: #20242b;
  color: var(--text-primary);
  font-size: 0.9rem;
}
.filter-select[multiple] {
  min-height: 80px;
}
.filter-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.filter-button {
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: #20242b;
  color: var(--text-primary);
  cursor: pointer;
}
.section-details {
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  margin-bottom: 16px;
}
.accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.trail-details {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-tertiary);
  overflow: hidden;
}
.trail-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  cursor: pointer;
  font-weight: 600;
  flex-wrap: wrap;
}
.trail-summary span {
  flex: 1;
}
.color-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}
.trail-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0 14px 12px;
}
.section-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 14px 14px;
}
.section-item {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: #20242b;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 4px;
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.section-item:hover {
  border-color: var(--accent);
  background: #242833;
}
.section-title {
  font-weight: 600;
}
.section-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.section-actions {
  margin-top: 6px;
}
.section-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
}
.legend {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}
.legend h2 {
  font-size: 1rem;
  margin: 0 0 8px;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  margin-bottom: 6px;
}
.empty-state {
  padding: 16px;
  border-radius: 8px;
  background: #20242b;
  border: 1px dashed var(--border-color);
  color: var(--text-secondary);
  margin-top: 12px;
}
.trail-label {
  color: #0f172a;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(148, 163, 184, 0.7);
  box-shadow: 0 6px 14px rgba(15, 23, 42, 0.2);
  white-space: nowrap;
}
.trail-label span {
  display: inline-block;
  padding-left: 6px;
}
.trail-endpoint {
  font-size: 0.7rem;
  background: rgba(15, 23, 42, 0.85);
  color: #fff;
  border-radius: 6px;
  padding: 4px 6px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  white-space: nowrap;
}
@media (max-width: 1100px){
  #app {
    grid-template-columns: minmax(260px, 360px) minmax(0, 1fr);
  }
}
@media (max-width: 900px){
  #app {
    display: flex;
    flex-direction: column;
    gap: clamp(16px, 2.5vw, 24px);
  }
  .map-panel {
    height: clamp(260px, 60vh, 420px);
    min-height: 260px;
    max-height: none;
  }
  #map {
    min-height: 260px;
  }
  .sidebar {
    max-height: none;
  }
  .filter-panel {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 700px){
  .page-header {
    margin-top: 1rem;
  }
  .filter-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  .map-panel { min-height: 320px; }
}
@media (max-width: 520px){
  :root {
    --page-padding: 14px;
  }
  .page-header h1 {
    font-size: 1.6rem;
  }
  .sidebar {
    padding: 12px;
  }
  .filter-panel,
  .section-details,
  .trail-details {
    padding: 10px;
  }
  .section-item {
    padding: 10px;
  }
  .map-panel {
    min-height: 320px;
  }
}