/* ========================================
   东至旅游网站样式
   设计风格：清新自然、绿色生态
   ======================================== */

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

:root {
    /* 主色调 - 森林绿 */
    --primary: #2d8653;
    --primary-dark: #1e6339;
    --primary-light: #4ca876;
    --primary-glow: rgba(45, 134, 83, 0.2);
    
    /* 强调色 - 金色 */
    --accent: #d4a84b;
    --accent-light: #e5c77a;
    
    /* 背景色 */
    --bg-dark: #f8f6f1;
    --bg-darker: #f0ece4;
    --bg-light: #ffffff;
    --bg-card: #ffffff;
    
    /* 文字色 */
    --text-primary: #2c3e30;
    --text-secondary: #5a6a5e;
    --text-muted: #8a9a8e;
    
    /* 边框 */
    --border: rgba(45, 134, 83, 0.15);
    --border-light: rgba(0, 0, 0, 0.06);
    
    /* 字体 */
    --font-serif: 'Noto Serif SC', serif;
    --font-sans: 'Noto Sans SC', sans-serif;
    
    /* 间距 */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    
    /* 过渡 */
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

/* ========================================
   导航栏
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(248, 246, 241, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 8px;
}

.logo-icon i {
    font-size: 1.2rem;
    color: white;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 600;
}

.logo-sub {
    font-size: 0.8rem;
    color: var(--primary);
    margin-left: 0.3rem;
}

.nav {
    display: flex;
    gap: var(--space-md);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: var(--space-xs) 0;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

/* ========================================
   Hero 主视觉
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    overflow: hidden;
}

.hero-slider {
    position: absolute;
    inset: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1s ease, visibility 1s ease;
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 2;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    letter-spacing: 0.2em;
    margin-bottom: var(--space-sm);
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    letter-spacing: 0.3em;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.6) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.hero-info {
    text-align: center;
    color: white;
    padding: var(--space-md);
}

.site-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    letter-spacing: 0.3em;
    margin-bottom: var(--space-xs);
}

.site-subtitle {
    font-size: 1.2rem;
    letter-spacing: 0.2em;
    opacity: 0.9;
    margin-bottom: var(--space-lg);
}

.hero-search {
    display: flex;
    max-width: 500px;
    margin: 0 auto var(--space-md);
    background: white;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.hero-search input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    outline: none;
    font-size: 1rem;
}

.hero-search button {
    padding: 1rem 1.5rem;
    background: var(--primary);
    border: none;
    color: white;
    cursor: pointer;
    transition: var(--transition);
}

.hero-search button:hover {
    background: var(--primary-dark);
}

.hero-tags {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.tag {
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.4);
    border-radius: 20px;
    color: white;
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
}

.hero-nav {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--space-sm);
    z-index: 3;
}

.hero-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: var(--transition);
}

.hero-dot.active {
    background: white;
    transform: scale(1.2);
}

/* ========================================
   通用区块样式
   ======================================== */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

section {
    padding: var(--space-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.section-tag {
    display: inline-block;
    color: var(--primary);
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    margin-bottom: var(--space-sm);
    font-weight: 600;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* ========================================
   特色景点
   ======================================== */
.featured-spots {
    background: var(--bg-light);
}

.spots-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.spot-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.spot-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.08);
}

.spot-card.large {
    grid-column: span 2;
    grid-row: span 2;
}

.spot-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.spot-card.large .spot-image {
    height: 300px;
}

.spot-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-glow), rgba(45, 134, 83, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
}

.spot-placeholder i {
    font-size: 4rem;
    color: var(--primary);
    opacity: 0.5;
}

.spot-badge {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    padding: 0.3rem 0.8rem;
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    border-radius: 20px;
}

.spot-content {
    padding: var(--space-md);
}

.spot-content h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.spot-location {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.spot-location i {
    color: var(--primary);
}

.spot-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

.spot-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.spot-tags span {
    padding: 0.3rem 0.6rem;
    background: var(--bg-darker);
    color: var(--text-secondary);
    font-size: 0.75rem;
    border-radius: 4px;
}

/* ========================================
   周边景点
   ======================================== */
.nearby-spots {
    background: var(--bg-darker);
}

.nearby-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.nearby-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.nearby-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.nearby-image {
    height: 120px;
    background: linear-gradient(135deg, var(--primary-glow), rgba(45, 134, 83, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
}

.nearby-placeholder i {
    font-size: 2.5rem;
    color: var(--primary);
    opacity: 0.5;
}

.nearby-content {
    padding: var(--space-sm);
    text-align: center;
}

.nearby-content h3 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
    color: var(--text-primary);
}

.nearby-content p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.distance {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    border-radius: 20px;
}

/* ========================================
   旅游线路
   ======================================== */
.routes {
    background: var(--bg-light);
}

.routes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.route-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    transition: var(--transition);
}

.route-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.route-card.featured {
    border-color: var(--primary);
}

.route-tag {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    padding: 0.3rem 0.8rem;
    background: var(--accent);
    color: white;
    font-size: 0.75rem;
    border-radius: 20px;
}

.route-header {
    padding: var(--space-md);
    background: var(--bg-darker);
}

.route-days {
    display: inline-block;
    padding: 0.3rem 0.6rem;
    background: var(--primary);
    color: white;
    font-size: 0.8rem;
    border-radius: 4px;
    margin-bottom: var(--space-xs);
}

.route-header h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    color: var(--text-primary);
}

.route-body {
    padding: var(--space-md);
}

.route-list {
    margin-bottom: var(--space-md);
}

.route-item {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-light);
}

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

.route-item .day {
    min-width: 50px;
    padding: 0.2rem 0.5rem;
    background: var(--bg-darker);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 4px;
    text-align: center;
}

.route-item h4 {
    font-size: 0.95rem;
    margin-bottom: 0.2rem;
    color: var(--text-primary);
}

.route-item p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.route-price {
    text-align: center;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border-light);
}

.route-price .price {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--primary);
    font-weight: 700;
}

.route-price .unit {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ========================================
   美食
   ======================================== */
.food {
    background: var(--bg-darker);
}

.food-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-md);
}

.food-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: var(--space-md);
    text-align: center;
    transition: var(--transition);
}

.food-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
}

.food-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-glow), rgba(45, 134, 83, 0.1));
    border-radius: 50%;
}

.food-icon i {
    font-size: 1.5rem;
    color: var(--primary);
}

.food-card h3 {
    font-family: var(--font-serif);
    font-size: 1rem;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.food-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ========================================
   旅游攻略
   ======================================== */
.guide {
    background: var(--bg-light);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.guide-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: var(--space-md);
    transition: var(--transition);
}

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

.guide-icon {
    width: 50px;
    height: 50px;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: 10px;
}

.guide-icon i {
    font-size: 1.3rem;
    color: white;
}

.guide-card h3 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.guide-card ul {
    list-style: none;
}

.guide-card li {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    position: relative;
}

.guide-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.guide-card strong {
    color: var(--text-primary);
}

/* ========================================
   空气质量
   ======================================== */
.air-quality {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: var(--space-lg) 0;
}

.air-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    color: white;
}

.air-icon i {
    font-size: 4rem;
    opacity: 0.9;
}

.air-info h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 0.3rem;
}

.air-info p {
    opacity: 0.9;
    font-size: 0.95rem;
}

.air-badge {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.3rem 0.8rem;
    background: rgba(255,255,255,0.2);
    border-radius: 20px;
    font-size: 0.85rem;
}

.air-stats {
    display: flex;
    gap: var(--space-lg);
}

.air-stat {
    text-align: center;
}

.air-stat .value {
    display: block;
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 700;
}

.air-stat .label {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ========================================
   关于
   ======================================== */
.about {
    background: var(--bg-darker);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.about-features {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-lg);
    flex-wrap: wrap;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 30px;
}

.feature i {
    color: var(--primary);
}

.feature span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ========================================
   底部
   ======================================== */
.footer {
    background: var(--bg-dark);
}

.footer-main {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border-light);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-lg);
}

.footer-slogan {
    color: var(--primary);
    font-size: 1.1rem;
    margin-top: var(--space-xs);
    font-family: var(--font-serif);
}

.footer-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: var(--space-sm);
}

.footer-links h4 {
    font-family: var(--font-serif);
    font-size: 1rem;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.footer-links li i {
    color: var(--primary);
    margin-right: 0.5rem;
    width: 16px;
}

.footer-bottom {
    padding: var(--space-md) 0;
    border-top: 1px solid var(--border-light);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1200px) {
    .spots-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .spot-card.large {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .nearby-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .food-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-light);
        flex-direction: column;
        padding: var(--space-md);
        border-bottom: 1px solid var(--border-light);
    }
    
    .nav.active {
        display: flex;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .spots-grid {
        grid-template-columns: 1fr;
    }
    
    .spot-card.large {
        grid-column: span 1;
    }
    
    .nearby-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .routes-grid {
        grid-template-columns: 1fr;
    }
    
    .food-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .guide-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .air-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .nearby-grid {
        grid-template-columns: 1fr;
    }
    
    .food-grid {
        grid-template-columns: 1fr;
    }
    
    .guide-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   景点卡片链接样式
   ======================================== */
.spot-link {
    display: block;
    text-decoration: none;
    color: inherit;
    height: 100%;
}

.spot-link:hover .spot-card {
    transform: translateY(-5px);
}

.nearby-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.nearby-link:hover .nearby-card {
    transform: translateY(-5px);
}