:root {
  --surface: #ffffff;
  --line: #d8dee4;
  --ink-muted: #5b6673;
  --water: #0f7fa8;
  --land: #4f7d4f;
}

body {
  background: #f6f8fa;
  color: #18202a;
}

.navbar-brand {
  color: var(--water);
}

.field-layout,
.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 1rem;
  align-items: start;
}

.field-form,
.quick-panel,
.detail-panel,
.empty-state,
.observation-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
}

.quick-panel,
.detail-panel {
  position: sticky;
  top: 5rem;
}

.map {
  width: 100%;
  height: min(58vh, 520px);
  min-height: 340px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #dfe8ed;
}

.detail-map {
  height: min(62vh, 620px);
}

.location-readout {
  min-height: 1.5rem;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.field-description {
  min-height: 12rem;
}

.group-toggle .btn,
.filter-bar .btn {
  min-height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.description-cell {
  max-width: 280px;
}

.mobile-list {
  display: none;
}

.observation-card + .observation-card {
  margin-top: 0.75rem;
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
}

.detail-photo {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #eef2f4;
}

.empty-state {
  max-width: 680px;
  margin: 2rem auto;
  text-align: center;
}

.btn-primary {
  --bs-btn-bg: var(--water);
  --bs-btn-border-color: var(--water);
  --bs-btn-hover-bg: #0c6f94;
  --bs-btn-hover-border-color: #0c6f94;
}

.btn-success {
  --bs-btn-bg: var(--land);
  --bs-btn-border-color: var(--land);
  --bs-btn-hover-bg: #426b42;
  --bs-btn-hover-border-color: #426b42;
}

@media (max-width: 900px) {
  .field-layout,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .quick-panel,
  .detail-panel {
    position: static;
  }
}

@media (max-width: 700px) {
  main.container-fluid {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .desktop-table {
    display: none;
  }

  .mobile-list {
    display: block;
  }

  .map {
    height: 48vh;
    min-height: 300px;
  }

  .field-description {
    min-height: 16rem;
  }

  .field-form,
  .quick-panel,
  .detail-panel,
  .observation-card {
    padding: 0.875rem;
  }
}