/* ========== 基础变量 ========== */
:root {
    --primary: #389BA8;
    --primary-dark: #287D89;
    --primary-light: #E8F6F8;
    --wuhan: #3B7DA6;
    --wuhan-light: #EAF3F9;
    --xian: #7D8B6A;
    --xian-light: #F3F5EE;
    --bg: #F2F5F9;
    --card-bg: #FFFFFF;
    --text: #2E4057;
    --text-light: #7D93A8;
    --border: #DEE5ED;
    --shadow: 0 2px 16px rgba(46, 64, 87, 0.06);
    --shadow-hover: 0 8px 30px rgba(46, 64, 87, 0.10);
    --radius: 16px;
    --radius-sm: 12px;
    --radius-xs: 8px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --success: #5BAF7B;
    --danger: #E06050;
    --warning: #E0A040;
    --nav-height: 56px;
}

/* ========== 全局样式 ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: linear-gradient(175deg, #EAF0F7 0%, #F2F6FA 30%, #F2F5F9 60%, #EDF4F6 100%);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    background-attachment: fixed;
    padding-bottom: calc(var(--nav-height) + env(safe-area-inset-bottom, 0px) + 24px);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.main-content {
    flex: 1;
}

a { text-decoration: none; color: inherit; }

/* ========== 顶部导航栏（精简版） ========== */
.navbar {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 48px;
}

.nav-logo {
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    letter-spacing: 0.03em;
}

.nav-logo i {
    color: var(--primary);
    font-size: 1.05rem;
}

.nav-toggle { display: none; }
.nav-links { display: none; }

/* ========== 底部导航栏（小程序风格） ========== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: var(--nav-height);
    padding: 0 4px;
    padding-bottom: env(safe-area-inset-bottom, 0px);
    z-index: 100;
    contain: layout style;
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 4px 10px;
    color: var(--text-light);
    font-size: 0.65rem;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
    min-width: 52px;
    position: relative;
    border-radius: 10px;
    -webkit-tap-highlight-color: transparent;
}

.bottom-nav-item i {
    font-size: 1.3rem;
    transition: var(--transition);
}

.bottom-nav-item.active {
    color: var(--primary);
    font-weight: 600;
}

.bottom-nav-item.active::before {
    content: '';
    position: absolute;
    top: -8px;
    width: 20px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.bottom-nav-item:active {
    transform: scale(0.9);
    opacity: 0.7;
}

/* ========== 英雄区 ========== */
.hero {
    background: linear-gradient(165deg, #DAEEF2 0%, #C5E4EC 25%, #BDDFEA 50%, #C7E1ED 75%, #D4E8F2 100%);
    padding: 36px 20px 36px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 0;
    right: 0;
    height: 40px;
    background: var(--bg);
    border-radius: 50% 50% 0 0;
}

.hero-subtitle {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.03em;
}

.hero-cities {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 16px;
}

.hero-city {
    background: rgba(255, 255, 255, 0.75);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.88rem;
    color: var(--text);
    font-weight: 500;
    backdrop-filter: blur(4px);
}

.hero-arrow {
    color: var(--text-light);
    font-size: 1rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 28px;
}

.hero-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-stat-num {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.hero-stat-label {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 2px;
}

/* ========== 区块通用 ========== */
.section {
    margin-bottom: 36px;
}

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

.section-title {
    font-size: 1.1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
    letter-spacing: 0.02em;
}

.section-title i {
    color: var(--primary);
    font-size: 1rem;
}

/* ========== 城市卡片 ========== */
.city-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.city-card {
    background: linear-gradient(135deg, #FFFFFF 0%, #FAFCFE 100%);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.city-card:hover {
    border-left-color: var(--primary);
}

.city-card:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-hover);
}

.city-card-emoji {
    font-size: 2.6rem;
    line-height: 1;
}

.city-card-body { flex: 1; }

.city-card-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
}

.city-card-days {
    font-size: 0.82rem;
    color: var(--primary);
    font-weight: 600;
    margin: 2px 0;
}

.city-card-desc {
    font-size: 0.8rem;
    color: var(--text-light);
}

.city-card-arrow {
    color: var(--border);
    font-size: 1rem;
}

/* ========== 行程时间线预览 ========== */
.timeline-preview {
    background: linear-gradient(180deg, #FFFFFF 0%, #FAFCFE 100%);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 8px 0;
    overflow: hidden;
}

.tl-item {
    display: flex;
    gap: 14px;
    align-items: stretch;
}

.tl-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 32px;
    flex-shrink: 0;
    position: relative;
    padding-top: 18px;
}

.tl-dot {
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 0 4px var(--primary-light);
}

.tl-item:not(:last-child) .tl-marker::after {
    content: '';
    width: 1.5px;
    flex: 1;
    background: var(--border);
    margin-top: 4px;
}

.tl-city-transition {
    font-size: 0.65rem;
    font-weight: 600;
    color: #fff;
    background: var(--primary);
    padding: 3px 8px;
    border-radius: 10px;
    margin-top: 14px;
    white-space: nowrap;
    letter-spacing: 0.05em;
}

.tl-card {
    flex: 1;
    padding: 14px 16px 14px 0;
}

.tl-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.tl-day-badge {
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 0.72rem;
    font-weight: 700;
}

.tl-city-tag {
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
    background: var(--wuhan-light);
    color: var(--wuhan);
}

.tl-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 4px;
}

.tl-desc {
    font-size: 0.82rem;
    color: var(--text-light);
    line-height: 1.5;
    margin: 0;
}

/* ========== 预算总览 ========== */
.budget-card {
    background: linear-gradient(180deg, #FFFFFF 0%, #FAFDFE 100%);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.budget-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.budget-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

.budget-numbers {
    font-weight: 700;
    font-size: 0.95rem;
}

.budget-spent {
    color: var(--primary);
    font-size: 1.3rem;
}

.budget-divider {
    margin: 0 4px;
    color: var(--border);
}

.budget-total {
    color: var(--text-light);
}

.budget-bar {
    height: 8px;
    background: #E4ECF4;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.budget-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #5ABDC5, #389BA8);
    border-radius: 4px;
    transition: width 0.6s ease;
}

.budget-bar-fill.warning {
    background: linear-gradient(90deg, #E0A040, #C89030);
}

.budget-bar-fill.danger {
    background: linear-gradient(90deg, #E06050, #C04840);
}

.budget-footer {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-light);
}

.budget-cat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 16px;
}

.budget-cat-item {
    background: linear-gradient(135deg, #F8FAFC, #F1F6F9);
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 12px;
}

.budget-cat-icon {
    font-size: 1.5rem;
    line-height: 1;
}

.budget-cat-info { flex: 1; }

.budget-cat-name {
    font-size: 0.84rem;
    font-weight: 600;
    display: block;
}

.budget-cat-amount {
    font-size: 0.78rem;
    color: var(--text-light);
    display: block;
    margin: 2px 0;
}

.budget-cat-bar {
    height: 4px;
    background: #D9E3ED;
    border-radius: 2px;
    overflow: hidden;
    margin-top: 4px;
}

.budget-cat-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 2px;
    transition: width 0.4s ease;
}

.budget-cat-fill.danger { background: var(--danger); }

/* ========== 快速操作 ========== */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.quick-action-btn {
    background: linear-gradient(180deg, #FFFFFF 0%, #F9FCFD 100%);
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text);
}

.quick-action-btn:active {
    transform: scale(0.97);
}

.quick-action-btn i {
    font-size: 1.5rem;
    color: var(--primary);
}

.quick-action-btn small {
    font-size: 0.76rem;
    color: var(--text-light);
    font-weight: 400;
}

/* ========== 城市头部 ========== */
.city-header {
    padding: 40px 20px;
    text-align: center;
}

.city-header.wuhan-header {
    background: linear-gradient(165deg, #E8F3F9, #D4E7F4);
}

.city-header.xian-header {
    background: linear-gradient(165deg, #F2F3EC, #E6EAE0);
}

.city-header-content h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.04em;
}

.city-header-days {
    font-size: 0.92rem;
    color: var(--text-light);
    margin-top: 6px;
}

.city-header-desc {
    font-size: 0.92rem;
    color: var(--text-light);
    max-width: 660px;
    margin: 10px auto 0;
    line-height: 1.7;
    text-wrap: balance;
    padding: 0 8px;
}

/* ========== 行前须知 ========== */
.info-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.info-card {
    background: linear-gradient(180deg, #FFFFFF 0%, #FAFCFE 100%);
    border-radius: var(--radius);
    padding: 18px 16px;
    display: flex;
    gap: 12px;
    box-shadow: var(--shadow);
    align-items: flex-start;
}

.info-card-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
    line-height: 1;
}

.info-card-body h4 {
    font-size: 0.88rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text);
}

.info-card-body p {
    font-size: 0.78rem;
    color: var(--text-light);
    line-height: 1.6;
}

.weather-card { border-left: 3px solid #E06050; }
.transport-card { border-left: 3px solid #3B7DA6; }
.season-card { border-left: 3px solid #5BAF7B; }

/* ========== 行程日卡片 ========== */
.itinerary-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.day-card {
    background: linear-gradient(180deg, #FFFFFF 0%, #FAFDFE 100%);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.day-card-header {
    background: linear-gradient(135deg, #E3F4F7, #DAEEF4);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border);
}

.day-number {
    background: var(--primary);
    color: #fff;
    padding: 3px 12px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.78rem;
    white-space: nowrap;
    letter-spacing: 0.05em;
}

.day-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
}

.day-card-body { padding: 18px 20px; }

.day-slot {
    padding: 12px 0;
    border-bottom: 1px solid #EEF2F6;
    display: grid;
    grid-template-columns: 28px 44px 1fr;
    gap: 8px;
    align-items: start;
}

.day-slot:last-child { border-bottom: none; }

.day-slot-icon {
    font-size: 1.1rem;
    text-align: center;
}

.day-slot-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-light);
}

.day-slot-text {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text);
}

.day-tips {
    margin-top: 14px;
    padding: 12px 16px;
    background: #F5F8F5;
    border-radius: var(--radius-xs);
    font-size: 0.84rem;
    color: #5B7A5E;
    line-height: 1.6;
    display: flex;
    gap: 8px;
}

.day-tips i { color: var(--warning); flex-shrink: 0; margin-top: 2px; }

.day-cost {
    margin-top: 12px;
    padding: 10px 16px;
    background: #EFF6F2;
    border-radius: var(--radius-xs);
    font-size: 0.84rem;
    font-weight: 600;
    color: #4A8B5E;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ========== 景点卡片 ========== */
.attraction-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.attraction-card {
    background: linear-gradient(180deg, #FFFFFF 0%, #FAFCFE 100%);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
}

.attraction-card.card-expanded {
    display: flex;
    flex-direction: column;
}

.attraction-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.attraction-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
}

.attraction-kid {
    font-size: 0.75rem;
    color: var(--warning);
    white-space: nowrap;
}

.attraction-kid small {
    color: var(--text-light);
    margin-left: 2px;
}

.attraction-overview {
    font-size: 0.84rem;
    color: var(--text);
    line-height: 1.7;
    margin-bottom: 4px;
    flex: 1;
}

.attraction-overview p { margin: 0; }

.attraction-tabs {
    display: flex;
    gap: 2px;
    margin-top: 14px;
    border-bottom: 1.5px solid var(--border);
}

.attraction-tab {
    padding: 8px 14px;
    background: none;
    border: none;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1.5px;
    transition: var(--transition);
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 4px;
}

.attraction-tab:hover { color: var(--primary); }

.attraction-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.attraction-tab-content { margin-top: 12px; }

.attraction-panel {
    display: none;
    font-size: 0.84rem;
    line-height: 1.7;
    color: var(--text);
}

.attraction-panel.active { display: block; }

/* ========== 子景点列表 ========== */
.sub-spots-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sub-spot-item {
    padding: 10px 0;
    border-bottom: 1px solid #EEF2F6;
    display: flex;
    gap: 10px;
    align-items: baseline;
}

.sub-spot-item:last-child { border-bottom: none; }

.sub-spot-name {
    font-weight: 700;
    color: var(--primary-dark);
    white-space: nowrap;
    font-size: 0.84rem;
    min-width: 72px;
}

.sub-spot-desc {
    color: var(--text-light);
    font-size: 0.8rem;
    line-height: 1.6;
}

/* ========== 亮点区 ========== */
.highlight-section {
    color: var(--text);
    line-height: 1.7;
}

/* ========== 攻略提示 ========== */
.tip-block {
    margin-bottom: 10px;
    padding: 10px 14px;
    background: #F5F8F5;
    border-radius: var(--radius-xs);
    border-left: 3px solid var(--warning);
}

.tip-block:last-child { margin-bottom: 0; }

.tip-block h5 {
    font-size: 0.82rem;
    font-weight: 700;
    color: #5B7A5E;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.tip-block p {
    font-size: 0.8rem;
    color: var(--text);
    line-height: 1.6;
    margin: 0;
}

.tip-block.avoid-block {
    background: #FDF5F5;
    border-left-color: var(--danger);
}

.tip-block.avoid-block h5 { color: var(--danger); }

/* ========== 景点元信息 ========== */
.attraction-meta {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.attraction-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    color: var(--text-light);
}

.attraction-meta-item i {
    width: 14px;
    color: var(--primary);
    text-align: center;
    font-size: 0.75rem;
}

.attraction-meta-row {
    display: flex;
    gap: 16px;
}

.attraction-actions {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 8px;
}

.attraction-btn {
    flex: 1;
    padding: 8px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-align: center;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    font-family: inherit;
    white-space: nowrap;
}

.nav-btn {
    background: var(--wuhan-light);
    color: var(--wuhan);
}

.nav-btn:active { background: #D4E5F2; }

.audio-btn {
    background: #EFF6F2;
    color: #4A8B5E;
}

.audio-btn:active { background: #DEEEE2; }

.audio-btn.speaking {
    background: #E8F6F8;
    color: #389BA8;
    animation: pulse-btn 1.5s infinite;
}

@keyframes pulse-btn {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.checkin-btn {
    background: #F3F5F8;
    color: #7D8BA0;
}

.checkin-btn:active { background: #E8ECF3; }

.checkin-btn.checked-in {
    background: #E8F6F0;
    color: #3DA87A;
}

.checkin-btn.checked-in i { font-weight: 900; }

/* ========== 美食卡片 ========== */
.food-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.food-card {
    background: linear-gradient(135deg, #FFFFFF 0%, #F9FBFC 100%);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: var(--shadow);
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.food-icon {
    font-size: 2rem;
    line-height: 1;
}

.food-info { flex: 1; }

.food-name {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text);
}

.food-desc {
    font-size: 0.8rem;
    color: var(--text-light);
    line-height: 1.5;
    margin-bottom: 8px;
}

.food-meta {
    display: flex;
    gap: 14px;
    font-size: 0.78rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.food-meta i { color: var(--primary); margin-right: 3px; }

.food-location {
    font-size: 0.78rem;
    color: var(--text-light);
}

.food-location i { color: var(--primary); margin-right: 3px; }

.food-tip {
    margin-top: 8px;
    padding: 6px 10px;
    background: #F5F8F5;
    border-radius: var(--radius-xs);
    font-size: 0.76rem;
    color: #5B7A5E;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ========== 页面头部 ========== */
.page-header {
    text-align: center;
    padding: 36px 0 16px;
}

.page-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.03em;
}

.page-subtitle {
    color: var(--text-light);
    margin-top: 6px;
    font-size: 0.9rem;
}

/* ========== 费用页面 ========== */
.expenses-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
}

.expenses-charts {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chart-card {
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FBFC 100%);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.chart-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
}

.chart-container {
    position: relative;
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chart-container canvas { max-height: 100%; }

.expenses-records {
    background: linear-gradient(180deg, #FFFFFF 0%, #FAFCFE 100%);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

/* ========== 按钮 ========== */
.btn {
    padding: 9px 18px;
    border-radius: 20px;
    border: none;
    font-size: 0.84rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: inherit;
}

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

.btn-primary:active { background: var(--primary-dark); }

.btn-outline {
    background: #fff;
    color: var(--text);
    border: 1.5px solid var(--border);
}

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

.btn-sm {
    padding: 5px 12px;
    font-size: 0.78rem;
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-danger:active { background: #C04840; }

/* ========== 表单 ========== */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.form-group { margin-bottom: 10px; }

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-light);
}

.form-input {
    width: 100%;
    padding: 9px 12px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-xs);
    font-size: 0.86rem;
    font-family: inherit;
    transition: var(--transition);
    background: #fff;
    color: var(--text);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(56, 155, 168, 0.08);
}

.form-actions {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}

/* ========== 弹窗 ========== */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

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

.modal-content {
    background: #fff;
    border-radius: 14px;
    width: 100%;
    max-width: 400px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px 12px;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 1;
}

.modal-header h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.4rem;
    color: #999;
    cursor: pointer;
    padding: 0 2px;
    line-height: 1;
}

.modal-close:hover {
    color: #333;
}

.modal-body {
    padding: 16px 20px 12px;
}

.modal-footer {
    display: flex;
    gap: 10px;
    padding: 12px 20px 16px;
    border-top: 1px solid #eee;
    position: sticky;
    bottom: 0;
    background: #fff;
    z-index: 1;
}

.modal-footer .btn {
    flex: 1;
    text-align: center;
    justify-content: center;
}

/* ========== section header actions ========== */
.section-header-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* ========== 费用列表 ========== */
.expense-list { max-height: 420px; overflow-y: auto; }

.empty-state {
    text-align: center;
    padding: 36px 20px;
    color: var(--text-light);
}

.empty-state i {
    font-size: 2.5rem;
    margin-bottom: 10px;
    opacity: 0.3;
}

.empty-hint { font-size: 0.8rem; margin-top: 4px; }

.expense-item {
    display: flex;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #EEF2F6;
    gap: 10px;
}

.expense-item:last-child { border-bottom: none; }

.expense-cat-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    flex-shrink: 0;
}

.expense-cat-icon.transport { background: var(--wuhan-light); color: var(--wuhan); }
.expense-cat-icon.hotel { background: #F5F8F5; color: #7A8A56; }
.expense-cat-icon.food { background: #EFF6F2; color: #4A8B5E; }
.expense-cat-icon.ticket { background: #F3F5F8; color: #7D8BA0; }
.expense-cat-icon.shopping { background: #FDF5F5; color: #E06050; }
.expense-cat-icon.other { background: #F1F4F8; color: var(--text-light); }

.expense-info { flex: 1; min-width: 0; }

.expense-info-name {
    font-weight: 600;
    font-size: 0.86rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.expense-city-tag {
    font-size: 0.68rem;
    padding: 2px 7px;
    border-radius: 8px;
    font-weight: 500;
}

.expense-city-tag.wuhan { background: var(--wuhan-light); color: var(--wuhan); }
.expense-city-tag.xian { background: var(--xian-light); color: var(--xian); }

.expense-info-meta {
    font-size: 0.74rem;
    color: var(--text-light);
    margin-top: 2px;
}

.expense-amount {
    font-weight: 700;
    color: var(--danger);
    white-space: nowrap;
    font-size: 0.95rem;
}

.expense-actions { display: flex; gap: 4px; }

.expense-actions button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 6px;
    font-size: 0.8rem;
    border-radius: 6px;
    transition: var(--transition);
}

.expense-actions .edit-btn { color: var(--primary); }
.expense-actions .edit-btn:hover { background: var(--primary-light); }
.expense-actions .del-btn { color: var(--danger); }
.expense-actions .del-btn:hover { background: #FDF5F5; }

/* ========== 行程总览时间线 ========== */
.city-section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1.5px solid var(--border);
}

.city-section-emoji { font-size: 2.2rem; line-height: 1; }

.city-section-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
}

.city-section-days {
    font-size: 0.82rem;
    color: var(--text-light);
}

.timeline {
    position: relative;
    padding-left: 72px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 34px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    margin-bottom: 24px;
}

.timeline-dot {
    position: absolute;
    left: -72px;
    top: 0;
    background: var(--primary);
    color: #fff;
    padding: 4px 12px;
    border-radius: 14px;
    font-size: 0.74rem;
    font-weight: 700;
    white-space: nowrap;
    letter-spacing: 0.04em;
}

.timeline-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 18px 20px;
    box-shadow: var(--shadow);
}

.timeline-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
}

.timeline-slots {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.timeline-slot {
    display: grid;
    grid-template-columns: 24px 38px 1fr;
    gap: 8px;
    font-size: 0.88rem;
    line-height: 1.6;
    align-items: start;
}

.timeline-slot-icon { text-align: center; }

.timeline-slot-label {
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.78rem;
}

.timeline-slot p { margin: 0; color: var(--text); }

.timeline-tips {
    margin-top: 12px;
    padding: 10px 14px;
    background: #F5F8F5;
    border-radius: var(--radius-xs);
    font-size: 0.82rem;
    color: #5B7A5E;
    display: flex;
    gap: 6px;
    line-height: 1.5;
}

.timeline-tips i { flex-shrink: 0; margin-top: 2px; }

.timeline-cost {
    margin-top: 12px;
    padding: 8px 14px;
    background: #EFF6F2;
    border-radius: var(--radius-xs);
    font-size: 0.82rem;
    font-weight: 600;
    color: #4A8B5E;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ========== 行李清单 ========== */
.checklist-progress {
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.82rem;
}

.checklist-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.checklist-group {
    background: linear-gradient(180deg, #FFFFFF 0%, #FAFCFE 100%);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: var(--shadow);
}

.checklist-cat-header {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding-bottom: 10px;
    border-bottom: 1.5px solid var(--border);
    color: var(--text);
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    cursor: pointer;
    transition: var(--transition);
}

.checklist-item:active {
    background: var(--bg);
    margin: 0 -8px;
    padding: 8px 8px;
    border-radius: var(--radius-xs);
}

.checklist-checkbox { display: none; }

.checklist-custom-check {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-radius: 6px;
    flex-shrink: 0;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.checklist-checkbox:checked + .checklist-custom-check {
    background: var(--success);
    border-color: var(--success);
}

.checklist-checkbox:checked + .checklist-custom-check::after {
    content: '✓';
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
}

.checklist-text {
    font-size: 0.86rem;
    transition: var(--transition);
}

.checklist-text.checked {
    text-decoration: line-through;
    color: var(--text-light);
}

/* ========== 紧急信息 ========== */
.emergency-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.emergency-card {
    background: linear-gradient(180deg, #FFFFFF 0%, #F9FCFD 100%);
    border-radius: var(--radius);
    padding: 20px 12px;
    text-align: center;
    box-shadow: var(--shadow);
}

.emergency-icon {
    font-size: 1.6rem;
    margin-bottom: 6px;
    line-height: 1;
}

.emergency-label {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.emergency-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
}

/* ========== 备忘录 ========== */
.memo-area {
    background: linear-gradient(180deg, #FFFFFF 0%, #FAFCFE 100%);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.memo-input {
    width: 100%;
    min-height: 140px;
    padding: 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-family: inherit;
    resize: vertical;
    line-height: 1.7;
    transition: var(--transition);
    background: #F8FAFB;
    color: var(--text);
}

.memo-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(56, 155, 168, 0.08);
}

.memo-actions {
    margin-top: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.memo-hint { color: var(--text-light); font-size: 0.76rem; }

/* ========== 页脚 ========== */
.footer {
    text-align: center;
    padding: 24px 20px;
    color: var(--text-light);
    font-size: 0.82rem;
}

.footer-sub {
    font-size: 0.74rem;
    margin-top: 4px;
    opacity: 0.6;
}

/* ========== 响应式 ========== */
@media (max-width: 750px) {
    .container { padding: 0 16px; }
    .hero-stats { gap: 28px; }
    .hero-stat-num { font-size: 1.5rem; }
    .info-cards { grid-template-columns: 1fr; }
    .city-cards { grid-template-columns: 1fr; }
    .attraction-grid,
    .food-grid { grid-template-columns: 1fr; }
    .expenses-layout { grid-template-columns: 1fr; }
    .budget-cat-grid { grid-template-columns: 1fr; }
    .quick-actions { grid-template-columns: 1fr; }
    .checklist-container { grid-template-columns: 1fr; }
    .emergency-grid { grid-template-columns: 1fr 1fr; }
    .sub-spot-item { flex-direction: column; gap: 2px; }
    .sub-spot-name { min-width: auto; }
    .attraction-tabs { flex-wrap: wrap; }
    .attraction-tab { font-size: 0.74rem; padding: 6px 10px; }

    .timeline { padding-left: 0; }
    .timeline::before { display: none; }
    .timeline-dot { position: static; margin-bottom: 8px; display: inline-block; }
    .timeline-item { margin-bottom: 20px; }

    .tl-item { flex-direction: column; }
    .tl-marker { display: none; }
    .tl-card { padding-left: 16px; }
}

@media (max-width: 480px) {
    .form-row { grid-template-columns: 1fr; }
    .chart-container { height: 180px; }
    .page-header h1 { font-size: 1.4rem; }
    .hero-subtitle {
    font-size: 0.88rem;
}
    .logo-text { display: block; }
}