:root {
  --primary: #2d5a27;
  --primary-light: #4a8c3f;
  --bg: #f8f6f1;
  --card-bg: #fff;
  --text: #333;
  --text-light: #666;
  --border: #e0dcd4;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --radius: 12px;
}

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

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-shrink: 0;
  box-shadow: var(--shadow);
  position: relative;
  z-index: 1000;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.logo-icon { font-size: 28px; }
.logo h1 { font-size: 20px; font-weight: 700; color: var(--primary); }
.subtitle { font-size: 13px; color: var(--text-light); }

.filters {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 6px 14px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  background: var(--card-bg);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text);
}

.filter-btn:hover { border-color: var(--primary-light); color: var(--primary); }
.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* Main */
main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 320px;
  background: var(--card-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

.search-box {
  padding: 12px;
  border-bottom: 1px solid var(--border);
}

.search-box input {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.search-box input:focus { border-color: var(--primary-light); }

.route-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

/* Sidebar 里的区域筛选（搜索框下方，纵向紧凑排列） */
/* Sidebar 筛选块：可折叠 */
.sidebar .filter-block {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.sidebar .filter-row-primary {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  padding: 8px 12px 4px;
}
.sidebar .filter-row-secondary {
  display: none;
  flex-wrap: wrap;
  gap: 5px;
  padding: 0 12px 8px;
}
.sidebar .filter-block.expanded .filter-row-secondary {
  display: flex;
}
.sidebar .filter-block .filter-btn {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 12px;
}
/* 折叠三角按钮 */
.sidebar .filter-toggle {
  font-size: 10px;
  padding: 2px 5px;
  border-radius: 10px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-light);
  cursor: pointer;
  line-height: 1;
  margin-left: auto;
  align-self: center;
  transition: transform 0.2s;
}
.sidebar .filter-block.expanded .filter-toggle {
  transform: rotate(180deg);
}

.route-card {
  padding: 12px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 6px;
  border: 1.5px solid transparent;
}

.route-card:hover { background: #f0ede6; }
.route-card.active { border-color: var(--primary); background: #f0f7ee; }

.route-card-title {
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.route-card-meta {
  font-size: 12px;
  color: var(--text-light);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.season-tag {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
}

.season-tag.spring { background: #fce4ec; color: #c62828; }
.season-tag.summer { background: #e8f5e9; color: #2e7d32; }
.season-tag.autumn { background: #fff3e0; color: #e65100; }
.season-tag.winter { background: #e3f2fd; color: #1565c0; }

.fruit-tag {
  font-size: 12px;
  color: var(--primary);
  cursor: pointer;
}

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

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

.legend {
  position: absolute;
  bottom: 20px;
  right: 10px;
  background: rgba(255,255,255,0.92);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 12px;
  display: flex;
  gap: 10px;
  box-shadow: var(--shadow);
  z-index: 1000;
}

.legend-item { display: flex; align-items: center; gap: 4px; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot.spring { background: #e91e63; }
.dot.summer { background: #4caf50; }
.dot.autumn { background: #ff9800; }
.dot.winter { background: #2196f3; }
.legend-sep { color: #ccc; padding: 0 2px; }
.line { width: 18px; height: 3px; border-radius: 2px; display: inline-block; }
.line.hiking { background: #2196f3; }
.line.mountain { background: #4caf50; }
.line.demanding { background: #ff9800; }
.line.alpine { background: #d32f2f; }

/* Modal */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.modal.show { display: flex; }

.modal-content {
  background: var(--card-bg);
  border-radius: 16px;
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 24px;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: none;
  background: #f0ede6;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover { background: #e0dcd4; }

.modal-header { margin-bottom: 12px; }
.modal-header h2 { font-size: 20px; color: var(--primary); margin-bottom: 4px; }
.modal-location { font-size: 13px; color: var(--text-light); }

.modal-meta { display: flex; gap: 8px; margin-bottom: 16px; }
.badge {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  background: #f0ede6;
  color: var(--text-light);
}

.season-block {
  margin-bottom: 16px;
  padding: 12px;
  border-radius: 10px;
}

.season-block.spring { background: #fff9fb; border-left: 4px solid #e91e63; }
.season-block.summer { background: #f1f8e9; border-left: 4px solid #4caf50; }
.season-block.autumn { background: #fff8e1; border-left: 4px solid #ff9800; }
.season-block.winter { background: #e3f2fd; border-left: 4px solid #2196f3; }

.season-block h4 {
  font-size: 14px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.season-block ul { list-style: none; }
.season-block li { font-size: 13px; padding: 3px 0; color: var(--text); }

/* Footer */
footer {
  text-align: center;
  padding: 8px;
  font-size: 12px;
  color: var(--text-light);
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.modal-notes {
  margin-top: 16px;
  padding: 12px;
  background: #f8f6f1;
  border-radius: 10px;
  font-size: 13px;
  color: #666;
  line-height: 1.5;
}

/* 弹窗底部操作按钮区 */
.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.action-btn {
  flex: 1;
  padding: 10px 14px;
  border: 1.5px solid var(--primary-light);
  border-radius: 10px;
  background: #fff;
  color: var(--primary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}
.action-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.action-btn:disabled {
  opacity: 0.6;
  cursor: default;
}
.action-btn:disabled:hover {
  background: #fff;
  color: var(--primary);
}
/* 导航按钮用蓝色 */
.action-btn.nav-btn {
  border-color: #1890ff;
  color: #1890ff;
}
.action-btn.nav-btn:hover {
  background: #1890ff;
  border-color: #1890ff;
  color: #fff;
}

footer a { color: var(--primary); }

/* Responsive */
@media (max-width: 768px) {
  main { flex-direction: column; }
  .sidebar { width: 100%; height: 40vh; }
  .map-container { height: 60vh; }
  .legend { bottom: 10px; right: 10px; font-size: 11px; gap: 6px; }
  header { flex-direction: column; align-items: flex-start; }
}

/* 新增：筛选组布局 */
.filter-group {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  flex-wrap: wrap;
}
.season-filters, .region-filters, .level-filters {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.region-filters {
  border-left: 1px solid var(--border);
  padding-left: 16px;
}
.region-filters .filter-btn {
  font-size: 12px;
  padding: 4px 10px;
}
.route-count {
  padding: 6px 12px;
  font-size: 12px;
  color: var(--text-light);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

/* ── 筛选组布局（header 里的季节筛选） ── */
.filter-group {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  flex-wrap: wrap;
}
.season-filters {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.route-count {

/* ── 花名点击查看图片 ── */
.flower-tag {
  cursor: pointer;
  color: #c2185b;
  border-bottom: 1px dashed #e91e63;
  transition: color 0.15s, border-color 0.15s;
}
.flower-tag:hover {
  color: #e91e63;
  border-bottom-color: #e91e63;
}

/* ── 花朵图片灯箱 ── */
.flower-modal {
  display: none;
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  background: rgba(0,0,0,0.7);
  z-index: 3000;
  justify-content: center;
  align-items: center;
  padding: 20px;
}
.flower-modal.show { display: flex; }
.flower-modal-inner {
  background: #fff;
  border-radius: 16px;
  max-width: 680px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  padding: 24px;
  position: relative;
}
.flower-modal-header {
  margin-bottom: 16px;
}
.flower-modal-header h3 {
  font-size: 18px;
  color: var(--primary);
  margin-bottom: 4px;
}
.flower-modal-sub {
  font-size: 11px;
  color: var(--text-light);
}
.flower-modal-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 32px;
  color: var(--text-light);
  font-size: 14px;
}
.flower-modal-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}
.flower-photo-card {
  display: block;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg);
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}
.flower-photo-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.flower-photo-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}
.flower-credit {
  font-size: 10px;
  color: var(--text-light);
  padding: 4px 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.flower-modal-error {
  text-align: center;
  padding: 24px;
  font-size: 13px;
  color: var(--text-light);
}
.flower-modal-error a { color: var(--primary); }
.flower-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
}

/* ── 加载路径按钮（弹窗内） ── */
.load-trails-btn {
  background: #fff;
  border: 1.5px solid #4caf50;
  border-radius: 20px;
  color: #4caf50;
  font-size: 13px;
  padding: 5px 14px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  transition: background 0.2s, color 0.2s;
  /* 非 absolute，方便放在弹窗 badge 行内 */
  position: relative;
}
.load-trails-btn:hover { background: #4caf50; color: #fff; }
.load-trails-btn:disabled { opacity: 0.7; cursor: default; }
.load-trails-btn[disabled]:hover { background: #fff; color: #4caf50; }

/* 地图右下角绝对定位版本 */
.load-trails-btn.floating {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 1000;
}

.trails-loading {
  position: absolute;
  top: 12px;
  right: 160px;
  z-index: 1000;
  background: rgba(255,255,255,0.9);
  border-radius: 20px;
  font-size: 12px;
  color: #666;
  padding: 5px 14px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}