/* ============================================================
   特价机票发现平台 - 样式表
   配色：蓝色/青绿色为主，橙色/红色强调低价信息
   ============================================================ */

/* ---- 基础重置与变量 ---- */
:root {
  --primary: #1565c0;
  --primary-light: #1e88e5;
  --primary-dark: #0d47a1;
  --secondary: #00897b;
  --secondary-light: #26a69a;
  --accent: #ff6d00;
  --accent-light: #ff9100;
  --danger: #e53935;
  --success: #43a047;
  --warning: #f9a825;
  --bg: #f0f4f8;
  --bg-alt: #f8fafc;
  --card: #ffffff;
  --text: #1a2332;
  --text-secondary: #5f6b7a;
  --text-light: #8c96a3;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
  --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

a { text-decoration: none; color: var(--primary); cursor: pointer; }
a:hover { color: var(--primary-light); }

button { cursor: pointer; border: none; background: none; font-family: inherit; }

input, select { font-family: inherit; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* ---- 页面切换 ---- */
.page { display: none; min-height: calc(100vh - 64px); }
.page.active { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ 导航栏 ============ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  height: 64px;
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: 64px;
  gap: 32px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-brand i {
  font-size: 22px;
  color: var(--primary);
}

.brand-text {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 4px;
  flex: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-link:hover { background: var(--bg); color: var(--primary); }
.nav-link.active { background: #e3f2fd; color: var(--primary); font-weight: 600; }

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

.btn-notification {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
}

.btn-notification:hover { background: var(--bg); color: var(--primary); }

.btn-notification .badge {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 18px;
  height: 18px;
  background: var(--danger);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-user {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  border: 1.5px solid var(--primary);
  transition: var(--transition);
}

.btn-user:hover { background: var(--primary); color: #fff; }

.btn-guide {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: #eef5ff;
  border: 1px solid #d6e7ff;
  transition: var(--transition);
}

.btn-guide:hover {
  background: #e3f0ff;
}

.nav-mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--text);
  border-radius: var(--radius-sm);
}

/* 通知面板 */
.notification-panel {
  position: absolute;
  top: 64px;
  right: 24px;
  width: 380px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
  display: none;
  z-index: 1001;
  overflow: hidden;
}

.notification-panel.show { display: block; animation: slideDown 0.2s ease; }

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ 首页新手引导 ============ */
.home-tour-modal,
.home-tour-overlay {
  position: fixed;
  inset: 0;
}

.home-tour-modal {
  z-index: 1800;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(8, 17, 30, 0.56);
}

.home-tour-modal__card {
  width: min(560px, 100%);
  background: #fff;
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 24px 64px rgba(11, 20, 33, 0.28);
}

.home-tour-modal__badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: #edf5ff;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
}

.home-tour-modal__card h3 {
  margin-top: 14px;
  font-size: 28px;
  line-height: 1.25;
}

.home-tour-modal__card p {
  margin-top: 12px;
  color: var(--text-secondary);
}

.home-tour-modal__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.btn-ghost {
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid transparent;
}

.btn-ghost:hover {
  background: #f6f8fb;
}

.home-tour-overlay {
  z-index: 1700;
  pointer-events: none;
}

.home-tour-dim {
  position: absolute;
  inset: 0;
  background: rgba(8, 17, 30, 0.52);
}

.home-tour-highlight {
  position: absolute;
  display: none;
  border-radius: 18px;
  border: 2px solid #53a9ff;
  box-shadow: 0 0 0 9999px rgba(8, 17, 30, 0.38), 0 0 0 8px rgba(83, 169, 255, 0.12);
  animation: homeTourPulse 1.6s ease-in-out infinite;
}

@keyframes homeTourPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.008); }
}

.home-tour-tooltip {
  position: absolute;
  pointer-events: auto;
  width: min(360px, calc(100vw - 24px));
  background: #fff;
  border-radius: 18px;
  padding: 16px;
  box-shadow: 0 20px 52px rgba(11, 20, 33, 0.26);
}

.home-tour-tooltip__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.home-tour-tooltip__count {
  padding: 4px 10px;
  border-radius: 999px;
  background: #edf5ff;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
}

.home-tour-tooltip__close {
  padding: 4px 8px;
  border-radius: 8px;
  color: var(--text-secondary);
}

.home-tour-tooltip__close:hover {
  background: #f4f7fb;
}

.home-tour-tooltip h4 {
  margin-top: 12px;
  font-size: 18px;
}

.home-tour-tooltip p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}

.home-tour-tooltip__hint {
  color: var(--primary) !important;
  font-weight: 600;
}

.home-tour-tooltip__actions {
  margin-top: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.home-tour-tooltip__left {
  display: flex;
  gap: 8px;
}

.home-tour-tooltip__extra {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid #e8edf4;
  padding-top: 12px;
}

.home-tour-tooltip__extra button {
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid #d9e3ef;
  background: #fff;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
}

.home-tour-tooltip__extra button:hover {
  background: #f6f9ff;
}

.notif-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.notif-header h4 { font-size: 15px; }
.notif-clear { font-size: 13px; color: var(--primary); cursor: pointer; }

.notif-item {
  display: flex;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid #f1f5f9;
  transition: var(--transition);
}

.notif-item:hover { background: #f8fafc; }
.notif-item.unread { background: #f0f7ff; }
.notif-item.unread:hover { background: #e3f0ff; }

.notif-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 14px;
}

.notif-icon.price-drop { background: #e8f5e9; color: var(--success); }
.notif-icon.flash-sale { background: #fff3e0; color: var(--accent); }
.notif-icon.info { background: #e3f2fd; color: var(--primary); }

.notif-content p { font-size: 13px; line-height: 1.5; }
.notif-detail { color: var(--text-secondary); margin-top: 2px; }
.notif-time { font-size: 12px; color: var(--text-light); }

/* 移动端导航 */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 1100;
}

.mobile-nav-overlay.show { display: block; }

.mobile-nav {
  position: fixed;
  top: 0;
  left: -280px;
  width: 280px;
  height: 100vh;
  background: var(--card);
  z-index: 1101;
  transition: left 0.3s ease;
  padding: 24px;
}

.mobile-nav.show { left: 0; }

.mobile-nav-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 32px;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 4px;
  transition: var(--transition);
}

.mobile-nav-link:hover, .mobile-nav-link.active {
  background: #e3f2fd;
  color: var(--primary);
}

/* ============ Hero 区域 ============ */
.hero {
  position: relative;
  padding: 60px 24px 48px;
  background: linear-gradient(135deg, #0d47a1 0%, #1565c0 30%, #00897b 100%);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.06) 0%, transparent 40%),
    radial-gradient(circle at 60% 80%, rgba(0,137,123,0.2) 0%, transparent 40%);
}

.hero-content {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.hero-title {
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #ffd54f, #ffab40);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
}

.hero-search-box {
  background: rgba(255,255,255,0.97);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xl);
}

.search-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.search-field {
  flex: 1;
  min-width: 0;
}

.search-field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.search-field label i {
  color: var(--primary);
  margin-right: 4px;
}

.search-field input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text);
  outline: none;
  transition: var(--transition);
}

.search-field input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(21,101,192,0.12); }

.swap-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
  margin-bottom: 2px;
}

.swap-btn:hover { background: var(--primary); color: #fff; }

.search-btn {
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: var(--transition);
  flex-shrink: 0;
}

.search-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 15px rgba(21,101,192,0.3); }

.search-quick-tags {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.quick-tag {
  padding: 6px 14px;
  background: #f0f7ff;
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.quick-tag:hover { background: #d6e8ff; }

/* ============ 通用模块样式 ============ */
.section { padding: 48px 0; }
.section-alt { background: var(--bg-alt); }

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-title-group { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.section-title-group h2 {
  font-size: 22px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-badge {
  font-size: 12px;
  padding: 3px 10px;
  background: #e8f5e9;
  color: var(--success);
  border-radius: 20px;
  font-weight: 600;
}

.section-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
}

.see-all {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.see-all:hover { gap: 8px; }

/* ============ 限时闪购 ============ */
.flash-section {
  background: linear-gradient(135deg, #fff5f5, #fff0e5);
  border-bottom: 3px solid #ffccbc;
}

.flash-icon { color: var(--accent); animation: flash-pulse 1.5s infinite; }

@keyframes flash-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.flash-timer {
  font-size: 14px;
  color: var(--danger);
  font-weight: 600;
}

.timer-digits {
  display: inline-block;
  background: var(--danger);
  color: #fff;
  padding: 3px 10px;
  border-radius: 6px;
  font-family: 'Courier New', monospace;
  font-size: 15px;
  letter-spacing: 1px;
}

.flash-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
}

.flash-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.flash-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--danger), var(--accent));
}

.flash-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }

.flash-card .flash-route {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.flash-card .flash-route .arrow {
  color: var(--primary);
  font-size: 12px;
}

.flash-card .flash-airline {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.flash-card .flash-price-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.flash-card .flash-price {
  font-size: 28px;
  font-weight: 800;
  color: var(--danger);
}

.flash-card .flash-price::before { content: '¥'; font-size: 16px; }

.flash-card .flash-original {
  font-size: 14px;
  color: var(--text-light);
  text-decoration: line-through;
}

.flash-card .flash-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-secondary);
}

.flash-card .seats-warning { color: var(--danger); font-weight: 600; }

.flash-card .flash-countdown {
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
}

/* ============ 今日爆款 ============ */
.deal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

.deal-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}

.deal-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }

.deal-card-header {
  padding: 16px 20px 12px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.deal-card-tags { display: flex; gap: 6px; flex-wrap: wrap; }

.deal-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  white-space: nowrap;
}

.deal-rating {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 700;
  white-space: nowrap;
}

.deal-card-body { padding: 0 20px 16px; }

.deal-route {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.deal-city {
  text-align: center;
}

.deal-city-name { font-size: 20px; font-weight: 700; }
.deal-city-code { font-size: 12px; color: var(--text-light); }

.deal-flight-line {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  position: relative;
}

.deal-flight-line::before {
  content: '';
  width: 100%;
  height: 1px;
  background: var(--border);
  border-top: 1px dashed #ccc;
}

.deal-flight-line i {
  color: var(--primary);
  background: var(--card);
  padding: 0 6px;
  position: absolute;
  top: -7px;
}

.deal-duration {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
}

.deal-direct-badge {
  font-size: 11px;
  color: var(--success);
  font-weight: 600;
}

.deal-card-footer {
  padding: 12px 20px 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-top: 1px solid #f1f5f9;
}

.deal-price-block {}

.deal-current-price {
  font-size: 30px;
  font-weight: 800;
  color: var(--danger);
  line-height: 1;
}

.deal-current-price::before {
  content: '¥';
  font-size: 16px;
  font-weight: 700;
}

.deal-original-price {
  font-size: 13px;
  color: var(--text-light);
  text-decoration: line-through;
  margin-left: 8px;
}

.deal-discount-tag {
  display: inline-block;
  background: #fff3e0;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 8px;
}

.deal-info {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.deal-action {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.deal-seats {
  font-size: 12px;
  color: var(--danger);
  font-weight: 600;
}

.deal-book-btn {
  padding: 8px 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.deal-book-btn:hover { box-shadow: 0 4px 12px rgba(21,101,192,0.3); }

/* ============ 热门航线 ============ */
.tab-switch {
  display: flex;
  gap: 4px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.tab-btn {
  padding: 6px 18px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.tab-btn.active { background: var(--card); color: var(--primary); font-weight: 600; box-shadow: var(--shadow-sm); }

.route-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.route-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}

.route-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

.route-info {}

.route-name {
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.route-name .route-arrow { color: var(--primary); font-size: 12px; }

.route-meta {
  font-size: 13px;
  color: var(--text-secondary);
}

.route-price-info { text-align: right; }

.route-min-price {
  font-size: 24px;
  font-weight: 800;
  color: var(--danger);
}

.route-min-price::before { content: '¥'; font-size: 14px; }

.route-min-label {
  font-size: 11px;
  color: var(--text-light);
}

.route-trend {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  margin-top: 4px;
}

.trend-down { background: #e8f5e9; color: var(--success); }
.trend-up { background: #fce4ec; color: var(--danger); }
.trend-stable { background: #f5f5f5; color: var(--text-light); }

/* ============ 主题推荐 ============ */
.theme-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.theme-tab {
  padding: 8px 20px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1.5px solid var(--border);
  transition: var(--transition);
}

.theme-tab:hover { border-color: var(--primary); color: var(--primary); }
.theme-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.theme-flight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}

.theme-flight-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}

.theme-flight-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

.theme-flight-route {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.theme-flight-route .t-arrow { color: var(--primary); font-size: 11px; }

.theme-flight-date { font-size: 12px; color: var(--text-light); margin-bottom: 8px; }

.theme-flight-price {
  font-size: 22px;
  font-weight: 800;
  color: var(--danger);
}

.theme-flight-price::before { content: '¥'; font-size: 13px; }

.theme-flight-original {
  font-size: 12px;
  color: var(--text-light);
  text-decoration: line-through;
  margin-left: 6px;
}

.theme-flight-tags { margin-top: 8px; display: flex; gap: 4px; }

.theme-tag {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: 600;
}

/* ============ 价格洞察 ============ */
.insight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 20px;
}

.insight-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.insight-card:hover { box-shadow: var(--shadow); }

.insight-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.insight-route { font-size: 16px; font-weight: 700; }

.insight-badge {
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.insight-badge.down { background: #e8f5e9; color: var(--success); }
.insight-badge.up { background: #fce4ec; color: var(--danger); }
.insight-badge.stable { background: #f5f5f5; color: var(--text-light); }

.insight-chart-wrap { margin-bottom: 16px; }

.insight-footer {}

.insight-footer .insight-stat {
  display: inline-flex;
  flex-direction: column;
  margin-right: 24px;
  margin-bottom: 8px;
}

.stat-label { font-size: 12px; color: var(--text-light); }
.stat-value { font-size: 18px; font-weight: 700; }
.highlight-price { color: var(--danger); }

.insight-recommendation {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.insight-recommendation.buy { background: #e8f5e9; color: var(--success); }
.insight-recommendation.wait { background: #fff3e0; color: var(--accent); }

/* ============ 搜索页 ============ */
.search-toolbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 64px;
  z-index: 100;
}

.toolbar-search-row {
  display: flex;
  gap: 10px;
  align-items: center;
}

.toolbar-field {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  min-width: 0;
}

.toolbar-field i { color: var(--primary); flex-shrink: 0; }

.toolbar-field input, .toolbar-field select {
  border: none;
  outline: none;
  font-size: 14px;
  width: 100%;
  color: var(--text);
  background: transparent;
}

.toolbar-field.trip-type { flex: 0.6; }

.swap-btn-sm {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
  transition: var(--transition);
}

.swap-btn-sm:hover { background: var(--primary); color: #fff; }

.toolbar-search-btn {
  padding: 10px 24px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  flex-shrink: 0;
  transition: var(--transition);
}

.toolbar-search-btn:hover { background: var(--primary-dark); }

.search-content {
  display: flex;
  gap: 24px;
  padding-top: 24px;
  padding-bottom: 48px;
}

/* 筛选侧栏 */
.filter-sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  height: fit-content;
  position: sticky;
  top: 140px;
}

.filter-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.filter-header h3 {
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.filter-reset {
  font-size: 13px;
  color: var(--primary);
}

.filter-group {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid #f1f5f9;
}

.filter-group:last-child { border-bottom: none; margin-bottom: 0; }

.filter-group h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.price-range-display {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}

.price-slider {
  width: 100%;
  accent-color: var(--primary);
}

.price-quick-btns {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.price-quick-btns button {
  flex: 1;
  padding: 4px 0;
  font-size: 12px;
  background: var(--bg);
  border-radius: 4px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.price-quick-btns button:hover { background: #e3f2fd; color: var(--primary); }

.filter-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 6px;
  cursor: pointer;
}

.filter-check input[type="checkbox"] { accent-color: var(--primary); }

.airline-filters { max-height: 180px; overflow-y: auto; }

.filter-toggle-btn {
  display: none;
  padding: 6px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-secondary);
}

/* 搜索结果 */
.search-results { flex: 1; min-width: 0; }

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.results-info { font-size: 14px; color: var(--text-secondary); display: flex; align-items: center; gap: 12px; }

.sort-options {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-light);
}

.sort-btn {
  padding: 5px 12px;
  font-size: 13px;
  border-radius: 6px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.sort-btn:hover { background: var(--bg); }
.sort-btn.active { background: #e3f2fd; color: var(--primary); font-weight: 600; }

.results-list { display: flex; flex-direction: column; gap: 12px; }

/* 结果卡片 */
.result-card {
  position: relative;
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.result-card:hover { border-color: #e3f2fd; box-shadow: var(--shadow); }

.result-airline {
  width: 60px;
  text-align: center;
  flex-shrink: 0;
}

.result-airline-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  margin: 0 auto 4px;
}

.result-airline-name { font-size: 12px; color: var(--text-secondary); }
.result-flight-no { font-size: 11px; color: var(--text-light); }

.result-flight-info {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 16px;
}

.result-time-block { text-align: center; min-width: 60px; }
.result-time { font-size: 22px; font-weight: 700; }
.result-airport { font-size: 12px; color: var(--text-secondary); }

.result-duration-line {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  position: relative;
  min-width: 80px;
}

.result-duration-line::before {
  content: '';
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--border), var(--primary-light), var(--border));
}

.result-duration { font-size: 12px; color: var(--text-light); }

.result-direct {
  font-size: 11px;
  font-weight: 600;
  color: var(--success);
  background: #e8f5e9;
  padding: 1px 6px;
  border-radius: 3px;
}

.result-stops {
  font-size: 11px;
  color: var(--text-light);
}

.result-tags {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
  flex-wrap: wrap;
  max-width: 120px;
}

.result-tag {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: 600;
  white-space: nowrap;
}

.result-price-section {
  text-align: right;
  flex-shrink: 0;
  min-width: 140px;
}

.result-price-block {
  flex-shrink: 0;
  min-width: 160px;
  max-width: 220px;
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.result-price-top {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  width: 100%;
}

.result-current-price {
  font-size: 28px;
  font-weight: 800;
  color: var(--danger);
  line-height: 1.1;
}

.result-current-price::before { content: '¥'; font-size: 15px; }

.result-original-price {
  font-size: 13px;
  color: var(--text-light);
  text-decoration: line-through;
}

.result-discount-badge {
  display: inline-block;
  background: #fff3e0;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  margin-top: 4px;
}

.result-book-btn {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 8px 0;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  text-align: center;
  transition: var(--transition);
}

.result-book-btn:hover { background: var(--primary-dark); }

.result-fav-btn {
  position: static;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  background: #f8fafc;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  padding: 0;
}

.result-fav-btn:hover { color: var(--danger); background: #fce4ec; }
.result-fav-btn.favorited { color: var(--danger); }

/* ============ 详情页 ============ */
.detail-container { padding-top: 24px; padding-bottom: 48px; }

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  margin-bottom: 20px;
}

.back-btn:hover { background: var(--bg); color: var(--primary); }

.detail-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 24px;
  align-items: start;
}

.detail-price-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.detail-price-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

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

.detail-rating {
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
}

.detail-price-row {
  display: flex;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.detail-current-price {}
.price-label { display: block; font-size: 12px; color: var(--text-light); margin-bottom: 2px; }
.price-big { font-size: 42px; font-weight: 800; color: var(--danger); line-height: 1; }
.price-big::before { content: '¥'; font-size: 22px; }
.price-original { font-size: 20px; color: var(--text-light); text-decoration: line-through; }

.detail-discount {
  background: linear-gradient(135deg, #ff6d00, #ff3d00);
  color: #fff;
  padding: 4px 14px;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 800;
}

.detail-savings {}
.save-label { display: block; font-size: 12px; color: var(--text-light); }
.save-amount { font-size: 20px; font-weight: 700; color: var(--success); }

.detail-actions {
  display: flex;
  gap: 12px;
}

.btn-primary {
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 15px rgba(21,101,192,0.3); }

.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-full { width: 100%; }

.btn-outline {
  padding: 10px 20px;
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.detail-flight-card, .detail-chart-card, .detail-rules-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.detail-flight-card h3, .detail-chart-card h3, .detail-rules-card h3 {
  font-size: 16px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.flight-detail-row {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 0;
}

.flight-detail-time {
  text-align: center;
  min-width: 80px;
}

.flight-detail-time .fd-time { font-size: 28px; font-weight: 700; }
.flight-detail-time .fd-date { font-size: 13px; color: var(--text-secondary); }
.flight-detail-time .fd-airport { font-size: 12px; color: var(--text-light); }

.flight-detail-mid {
  flex: 1;
  text-align: center;
}

.fd-duration { font-size: 14px; color: var(--text-secondary); font-weight: 600; }
.fd-type { font-size: 12px; color: var(--success); font-weight: 600; margin-top: 4px; }

.fd-line {
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  margin: 8px 0;
  position: relative;
}

.fd-line::after {
  content: '✈';
  position: absolute;
  right: -4px;
  top: -10px;
  color: var(--primary);
  font-size: 16px;
}

.fd-airline-info {
  display: flex;
  justify-content: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 8px;
}

.chart-container { position: relative; }

.chart-legend {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 12px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}

.legend-dot {
  width: 12px;
  height: 3px;
  border-radius: 2px;
}

.legend-dot.current { background: var(--primary); }
.legend-dot.avg { background: var(--warning); }
.legend-dot.low { background: var(--success); }

.rules-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.rule-item {
  padding: 12px;
  background: var(--bg);
  border-radius: var(--radius-sm);
}

.rule-item .rule-label {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 4px;
}

.rule-item .rule-value {
  font-size: 14px;
  font-weight: 600;
}

.rule-value.yes { color: var(--success); }
.rule-value.no { color: var(--danger); }

.risk-notice {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 16px;
  background: #fff8e1;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: #f57f17;
}

.risk-notice i { margin-top: 2px; flex-shrink: 0; }

/* 详情侧栏 */
.detail-sidebar {}

.sidebar-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
}

.sidebar-card h4 {
  font-size: 15px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.buy-advice .advice-content {}

.advice-item {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid #f1f5f9;
}

.advice-item:last-child { border-bottom: none; margin-bottom: 0; }

.advice-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.advice-icon.green { background: #e8f5e9; color: var(--success); }
.advice-icon.blue { background: #e3f2fd; color: var(--primary); }
.advice-icon.orange { background: #fff3e0; color: var(--accent); }

.advice-text { font-size: 13px; line-height: 1.5; }
.advice-text strong { font-weight: 600; }

.similar-flight-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  margin-bottom: 8px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.similar-flight-item:hover { background: #e3f2fd; }

.similar-route { font-size: 14px; font-weight: 600; }
.similar-date { font-size: 12px; color: var(--text-secondary); }
.similar-price { font-size: 18px; font-weight: 700; color: var(--danger); }
.similar-price::before { content: '¥'; font-size: 12px; }

/* ============ 地图探索页 ============ */
.map-page-layout { padding: 24px; max-width: 1400px; margin: 0 auto; }

.map-controls {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.map-control-row {
  display: flex;
  gap: 24px;
  align-items: flex-end;
  margin-bottom: 16px;
}

.map-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.map-field select {
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  outline: none;
  min-width: 160px;
}

.budget-slider-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.budget-slider-wrap input[type="range"] {
  width: 200px;
  accent-color: var(--primary);
}

.budget-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  min-width: 60px;
}

.map-themes {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.map-theme-btn {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  transition: var(--transition);
}

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

.map-container {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 20px;
  position: relative;
}

.map-visual {
  width: 100%;
  height: 520px;
  background: linear-gradient(180deg, #e8f4fd 0%, #d4edfc 50%, #c1e6fb 100%);
  position: relative;
  overflow: hidden;
}

.map-bubble {
  position: absolute;
  transform: translate(-50%, -50%);
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 10;
}

.map-bubble:hover { z-index: 20; transform: translate(-50%, -50%) scale(1.15); }

.map-bubble-inner {
  text-align: center;
  position: relative;
}

.bubble-price {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  white-space: nowrap;
}

.bubble-price.cheap { background: var(--success); }
.bubble-price.mid { background: var(--accent); }
.bubble-price.expensive { background: var(--danger); }

.bubble-city {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  margin-top: 2px;
  text-shadow: 0 1px 2px rgba(255,255,255,0.8);
}

.bubble-pin {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  margin: 2px auto 0;
  box-shadow: 0 0 0 3px rgba(21,101,192,0.2);
}

.map-bubble.hidden { display: none; }

.map-legend {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(255,255,255,0.95);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}

.map-legend-item { display: flex; align-items: center; gap: 6px; }

.legend-bubble {
  width: 14px;
  height: 14px;
  border-radius: 50%;
}

.legend-bubble.cheap { background: var(--success); }
.legend-bubble.mid { background: var(--accent); }
.legend-bubble.expensive { background: var(--danger); }

.map-dest-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 14px;
}

.dest-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
}

.dest-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.dest-card.hidden { display: none; }

.dest-info {}
.dest-name { font-size: 16px; font-weight: 700; margin-bottom: 2px; }
.dest-airport { font-size: 12px; color: var(--text-light); }
.dest-themes { display: flex; gap: 4px; margin-top: 6px; }

.dest-theme-tag {
  font-size: 11px;
  padding: 1px 8px;
  background: var(--bg);
  color: var(--text-secondary);
  border-radius: 10px;
}

.dest-price-info { text-align: right; }

.dest-price {
  font-size: 22px;
  font-weight: 800;
  color: var(--danger);
}

.dest-price::before { content: '¥'; font-size: 13px; }

.dest-price-label { font-size: 11px; color: var(--text-light); }

/* ============ 收藏页 ============ */
.fav-container { padding-top: 32px; padding-bottom: 48px; }

.fav-header { margin-bottom: 24px; }
.fav-header h2 { font-size: 24px; font-weight: 700; }
.fav-header p { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }

.fav-tabs { display: flex; gap: 4px; margin-bottom: 24px; }

.fav-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1.5px solid var(--border);
  transition: var(--transition);
}

.fav-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.fav-count {
  font-size: 12px;
  padding: 1px 8px;
  background: rgba(255,255,255,0.2);
  border-radius: 10px;
}

.fav-tab.active .fav-count { background: rgba(255,255,255,0.25); }

.empty-state {
  text-align: center;
  padding: 80px 20px;
}

.empty-icon {
  font-size: 56px;
  color: var(--border);
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.fav-list, .alert-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.fav-item {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.fav-item:hover { box-shadow: var(--shadow); }

.fav-route-info {}
.fav-route { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.fav-meta { font-size: 13px; color: var(--text-secondary); }

.fav-price-info { text-align: right; }
.fav-price { font-size: 24px; font-weight: 800; color: var(--danger); }
.fav-price::before { content: '¥'; font-size: 14px; }
.fav-price-change { font-size: 12px; margin-top: 2px; }
.price-down { color: var(--success); }
.price-up { color: var(--danger); }

.fav-actions { display: flex; gap: 8px; margin-top: 8px; }

.fav-action-btn {
  padding: 6px 14px;
  font-size: 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: var(--transition);
}

.fav-action-btn:hover { border-color: var(--primary); color: var(--primary); }
.fav-action-btn.remove:hover { border-color: var(--danger); color: var(--danger); }

/* ============ 登录页 ============ */
.login-container {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  background: linear-gradient(135deg, #f0f7ff 0%, #e0f2f1 100%);
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.login-header {
  text-align: center;
  margin-bottom: 28px;
}

.login-logo {
  font-size: 36px;
  color: var(--primary);
  margin-bottom: 12px;
}

.login-header h2 { font-size: 22px; margin-bottom: 6px; }
.login-header p { font-size: 14px; color: var(--text-secondary); }

.login-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 3px;
  margin-bottom: 24px;
}

.login-tab {
  flex: 1;
  padding: 8px;
  text-align: center;
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.login-tab.active { background: var(--card); color: var(--primary); font-weight: 600; box-shadow: var(--shadow-sm); }

.login-form { }

.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }

.input-with-icon {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.input-with-icon:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(21,101,192,0.12); }
.input-with-icon i { color: var(--text-light); }

.input-with-icon input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 15px;
  color: var(--text);
}

.input-with-code {
  display: flex;
  gap: 10px;
}

.input-with-code .input-with-icon { flex: 1; }

.code-btn {
  padding: 0 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  border: 1.5px solid var(--primary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: var(--transition);
}

.code-btn:hover { background: var(--primary); color: #fff; }
.code-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.form-agreement {
  margin-bottom: 18px;
  font-size: 13px;
  color: var(--text-secondary);
}

.form-agreement input { accent-color: var(--primary); }
.form-agreement a { color: var(--primary); }

.login-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 0;
  color: var(--text-light);
  font-size: 13px;
}

.login-divider::before, .login-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.social-login {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.social-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  transition: var(--transition);
}

.social-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.social-btn.wechat { color: #07c160; }
.social-btn.wechat:hover { background: #07c160; color: #fff; border-color: #07c160; }
.social-btn.alipay { color: #1677ff; }
.social-btn.alipay:hover { background: #1677ff; color: #fff; border-color: #1677ff; }
.social-btn.apple { color: #333; }
.social-btn.apple:hover { background: #333; color: #fff; border-color: #333; }

/* ============ 城市选择器 ============ */
.city-picker-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 2000;
  display: none;
}

.city-picker-overlay.show { display: block; }

.city-picker {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 480px;
  max-height: 500px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-xl);
  z-index: 2001;
  display: none;
  overflow: hidden;
}

.city-picker.show { display: block; animation: fadeIn 0.2s ease; }

.city-picker-header {
  display: flex;
  gap: 10px;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.city-picker-header input {
  flex: 1;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  outline: none;
}

.city-picker-header input:focus { border-color: var(--primary); }

.city-picker-header button {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 18px;
}

.city-picker-header button:hover { background: var(--bg); }

.city-picker-hot { padding: 16px; }
.city-picker-hot h4 { font-size: 13px; color: var(--text-secondary); margin-bottom: 10px; }

.hot-cities {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.hot-city-btn {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text);
  transition: var(--transition);
}

.hot-city-btn:hover { border-color: var(--primary); color: var(--primary); background: #f0f7ff; }

.city-picker-list {
  padding: 0 16px 16px;
  max-height: 280px;
  overflow-y: auto;
}

/* ============ 弹窗 ============ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 3000;
  display: none;
  align-items: center;
  justify-content: center;
}

.modal-overlay.show { display: flex; }

.modal-card {
  width: 100%;
  max-width: 440px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  transition: var(--transition);
}

.modal-close:hover { background: var(--bg); color: var(--text); }

.modal-body { padding: 24px; }

.alert-route {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}

.input-hint {
  display: block;
  font-size: 12px;
  color: var(--text-light);
  margin-top: 6px;
}

.alert-methods { display: flex; flex-direction: column; gap: 6px; }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

/* ============ Toast ============ */
.toast-container {
  position: fixed;
  top: 80px;
  right: 24px;
  z-index: 5000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  background: var(--card);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.3s ease;
  border-left: 4px solid var(--primary);
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ============ 页脚 ============ */
.footer {
  background: #1a2332;
  color: rgba(255,255,255,0.7);
  padding: 48px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand h3 {
  color: #fff;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.footer-brand p { font-size: 14px; line-height: 1.6; }

.footer-links h4 {
  color: #fff;
  font-size: 14px;
  margin-bottom: 12px;
}

.footer-links a {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  padding: 4px 0;
  transition: var(--transition);
}

.footer-links a:hover { color: #fff; }

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .deal-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
  .insight-grid { grid-template-columns: 1fr; }
  .detail-layout { grid-template-columns: 1fr; }
  .detail-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: flex; }
  .nav-actions { margin-left: auto; }

  .hero { padding: 40px 16px 32px; }
  .hero-title { font-size: 28px; }
  .hero-subtitle { font-size: 14px; }

  .search-row { flex-direction: column; }
  .swap-btn { transform: rotate(90deg); align-self: center; }

  .search-content { flex-direction: column; }
  .filter-sidebar {
    display: none;
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1200;
    border-radius: 0;
    overflow-y: auto;
    padding-top: 60px;
  }
  .filter-sidebar.show { display: block; }
  .filter-toggle-btn { display: flex; }

  .toolbar-search-row {
    flex-wrap: wrap;
  }

  .toolbar-field { flex: 1 1 40%; }
  .toolbar-field.trip-type { flex: 0 0 auto; }

  .result-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .result-flight-info { width: 100%; }
  .result-price-section { width: 100%; text-align: left; display: flex; align-items: center; justify-content: space-between; }
  .result-price-block {
    width: 100%;
    max-width: none;
    align-items: flex-end;
  }
  .result-tags { max-width: none; }

  .deal-grid { grid-template-columns: 1fr; }
  .route-grid { grid-template-columns: 1fr 1fr; }
  .theme-flight-grid { grid-template-columns: 1fr 1fr; }

  .detail-sidebar { grid-template-columns: 1fr; }
  .detail-actions { flex-wrap: wrap; }
  .detail-price-row { gap: 16px; }
  .price-big { font-size: 32px; }
  .rules-grid { grid-template-columns: 1fr; }

  .map-control-row { flex-direction: column; gap: 12px; }
  .map-visual { height: 400px; }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }

  .flash-cards { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }

  .sort-options { font-size: 12px; }
  .sort-btn { padding: 4px 8px; font-size: 12px; }

  .city-picker { width: calc(100% - 32px); }

  .notification-panel { right: 8px; width: calc(100% - 16px); max-width: 380px; }
}

@media (max-width: 480px) {
  .route-grid { grid-template-columns: 1fr; }
  .theme-flight-grid { grid-template-columns: 1fr; }
  .map-dest-list { grid-template-columns: 1fr; }
  .flash-cards { grid-template-columns: 1fr; }
  .hero-title { font-size: 24px; }
  .login-card { padding: 28px 20px; }
}

/* ---- 滚动条美化 ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ============ AI 规划嵌入页（Next 静态导出 planner/） ============ */
#page-aiPlan {
  padding: 0;
}

.ai-planner-embed-shell {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 64px);
  background: var(--bg-soft, #f8fafc);
}

.ai-planner-embed-top {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color, #e2e8f0);
  background: #fff;
}

.ai-planner-embed-title {
  flex: 1;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary, #0f172a);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ai-planner-embed-title i {
  color: #0ea5e9;
}

.ai-planner-open-tab {
  font-size: 13px;
  color: #0284c7;
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid #bae6fd;
  background: #f0f9ff;
  transition: var(--transition, 0.2s ease);
}

.ai-planner-open-tab:hover {
  background: #e0f2fe;
}

.ai-planner-embed-frame-wrap {
  flex: 1;
  min-height: 0;
  position: relative;
}

.ai-planner-embed-frame {
  display: block;
  width: 100%;
  height: min(88vh, calc(100vh - 120px));
  min-height: 560px;
  border: 0;
  background: #fff;
}

.ai-planner-embed-hint {
  margin: 0;
  padding: 8px 16px 12px;
  font-size: 12px;
  color: #64748b;
  line-height: 1.5;
}

.ai-planner-embed-hint code {
  font-size: 11px;
  background: #f1f5f9;
  padding: 2px 6px;
  border-radius: 4px;
}

@media (max-width: 768px) {
  .ai-planner-embed-frame {
    height: calc(100vh - 140px);
    min-height: 420px;
  }
}