/* ===== 景点详情页共享样式 ===== */

:root {
    --green-dark: #3b5e4a;
    --green-light: #6b8f7e;
    --bg: #faf8f5;
    --card-bg: #ffffff;
    --text: #333;
    --text-light: #666;
    --border: #e0dcd5;
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
}

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

body {
    font-family: 'Segoe UI', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
}

/* ---- 顶部导航 ---- */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 5%;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.top-nav .logo {
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--green-dark);
    letter-spacing: 2px;
}
.back-btn {
    background: var(--green-dark);
    color: white;
    padding: 8px 18px;
    border-radius: 24px;
    text-decoration: none;
    font-size: 0.95rem;
    transition: 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
}
.back-btn:hover {
    background: var(--green-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(59,94,74,0.2);
}

/* ---- 轮播 ---- */
.swiper {
    width: 90%;
    max-width: 1100px;
    height: 420px;
    margin: 30px auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
}
.swiper-slide {
    background-position: center;
    background-size: cover;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}
.swiper-slide .slide-caption {
    background: linear-gradient(transparent, rgba(0,0,0,0.5));
    color: white;
    width: 100%;
    padding: 40px 20px 20px;
    text-align: center;
    font-size: 1.3rem;
    font-weight: 300;
    letter-spacing: 1px;
}
.swiper-pagination-bullet-active { background: white; }

/* ---- 旅行锦囊 ---- */
.tips-section {
    max-width: 1100px;
    margin: 40px auto;
    padding: 0 20px;
}
.section-title {
    font-size: 2rem;
    font-weight: 300;
    color: var(--green-dark);
    margin-bottom: 24px;
    text-align: center;
}
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}
.tip-card {
    background: var(--card-bg);
    padding: 24px 20px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s;
}
.tip-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0,0,0,0.1);
}
.tip-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}
.tip-card h3 {
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--green-dark);
}
.tip-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ---- 景点卡片 ---- */
.spots-block {
    max-width: 1100px;
    margin: 50px auto;
    padding: 0 20px;
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 20px;
}
.spot-card {
    background: var(--card-bg);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}
.spot-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 36px rgba(0,0,0,0.12);
}
.spot-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
    border-bottom: 1px solid var(--border);
}
.spot-card .card-text {
    padding: 18px 16px;
}
.spot-card h3 {
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--green-dark);
}
.spot-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* ---- 底部 ---- */
footer {
    text-align: center;
    padding: 30px;
    color: #999;
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
    margin-top: 40px;
}

/* ---- 响应式 ---- */
@media (max-width: 600px) {
    .swiper { height: 250px; }
    .top-nav .logo { font-size: 1.4rem; }
}