/*============================================================================
 * 民宿汇 - 统一设计系统 v2.0
 * 全局样式令牌 + 基础样式 + 通用组件
 *============================================================================*/

/* ===== 1. 设计令牌 ===== */
:root {
    /* 品牌色系 */
    --primary: #FF385C;
    --primary-dark: #D42D4B;
    --primary-deeper: #B3253A;
    --primary-light: #FFE8EC;
    --primary-pale: #FFF2F5;
    --primary-glow: rgba(255,56,92,0.12);

    /* 功能色 */
    --success: #2D9F6E;
    --warning: #F39C12;
    --danger: #E74C3C;
    --info: #3498DB;

    /* 中性色 - 背景 */
    --bg: #FAF9F8;
    --surface: #FFFFFF;
    --surface-hover: #F8F7F6;

    /* 中性色 - 文字 */
    --text: #1C1C1E;
    --text-2: #5E5E62;
    --text-3: #929297;
    --text-inverse: #FFFFFF;

    /* 中性色 - 边框 */
    --border: #E6E6E9;
    --border-light: #F2F2F5;
    --border-focus: var(--primary);

    /* 页脚 */
    --footer-bg: #1A1316;
    --footer-text: rgba(255,255,255,0.45);
    --footer-text-hover: rgba(255,255,255,0.7);
    --footer-border: rgba(255,255,255,0.06);
    --footer-link-border: rgba(255,255,255,0.1);

    /* 登录页兼容变量 */
    --wechat-color: #07C160;
    --warning-color: #E74C3C;

    /* 阴影层级 */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.03);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.06), 0 4px 6px -2px rgba(0,0,0,0.03);
    --shadow-xl: 0 20px 40px -12px rgba(0,0,0,0.1), 0 8px 16px -8px rgba(0,0,0,0.04);
    --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
    --shadow-nav: 0 1px 3px rgba(0,0,0,0.03);

    /* 圆角 */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* 间距 */
    --space-1: 4px;  --space-2: 8px;  --space-3: 12px;
    --space-4: 16px; --space-5: 20px;  --space-6: 24px;
    --space-8: 32px; --space-10: 40px; --space-12: 48px;
    --space-16: 64px; --space-20: 80px;

    /* 字体 */
    --font: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;

    /* 字号层级 */
    --text-xs: 0.75rem;   /* 12px */
    --text-sm: 0.8125rem; /* 13px */
    --text-base: 0.9375rem; /* 15px */
    --text-md: 1rem;      /* 16px */
    --text-lg: 1.125rem;  /* 18px */
    --text-xl: 1.25rem;   /* 20px */
    --text-2xl: 1.5rem;   /* 24px */
    --text-3xl: 1.875rem; /* 30px */
    --text-4xl: 2.25rem;  /* 36px */
    --text-5xl: 3rem;     /* 48px */

    /* 过渡 */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-spring: cubic-bezier(0.2, 0.9, 0.3, 1.15);
    --duration-fast: 150ms;
    --duration: 250ms;
    --duration-slow: 400ms;

    /* 容器 */
    --max-width: 1200px;

    /* 向后兼容别名（旧版页面过渡用） */
    --c1: var(--primary-deeper);
    --c2: var(--primary);
    --c3: var(--primary-dark);
    --c4: var(--primary-light);
    --c5: var(--primary-pale);
    --gold: var(--primary);
    --gold-light: var(--primary-pale);
    --white: var(--surface);
    --text2: var(--text-2);
    --text3: var(--text-3);
    --border-l: var(--border-light);
    --s-xs: var(--shadow-xs);
    --s-sm: var(--shadow-sm);
    --s-md: var(--shadow-md);
    --s-lg: var(--shadow-lg);
    --s-xl: var(--shadow-xl);
    --r-sm: var(--radius);
    --r-md: var(--radius-lg);
    --r-lg: var(--radius-2xl);
}

/* ===== 2. 重置与基础 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}
body {
    font-family: var(--font);
    font-size: var(--text-md);
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
    letter-spacing: -0.01em;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; height: auto; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; }

/* 容器 */
.wrap { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ===== 3. 排版工具 ===== */
h1,h2,h3,h4,h5,h6 { line-height: 1.25; font-weight: 700; color: var(--text); }
.section-title {
    font-size: var(--text-2xl);
    font-weight: 750;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.section-icon { color: var(--primary); font-size: var(--text-lg); flex-shrink: 0; }
.section-more {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-3);
    margin-left: auto;
    transition: color var(--duration-fast) var(--ease-out);
    display: flex;
    align-items: center;
    gap: 4px;
}
.section-more:hover { color: var(--primary); }

/* ===== 4. 导航栏 (统一样式) ===== */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(16px) saturate(1.8);
    -webkit-backdrop-filter: blur(16px) saturate(1.8);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-nav);
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--text-xl);
    font-weight: 750;
    color: var(--text);
    letter-spacing: -0.02em;
    flex-shrink: 0;
}
.nav-logo i { font-size: 20px; color: var(--primary); }
.nav-logo b { color: var(--primary); font-weight: 800; }
.nav-menu {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
    margin-left: auto;
}
.nav-menu a, .nav-menu button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-2);
    transition: all var(--duration-fast) var(--ease-out);
}
.nav-menu a:hover, .nav-menu button:hover {
    background: var(--border-light);
    color: var(--text);
}
.nav-btn-primary {
    background: var(--primary) !important;
    color: #fff !important;
    font-weight: 600 !important;
    padding: 8px 18px !important;
    border-radius: var(--radius-sm) !important;
    box-shadow: 0 2px 8px var(--primary-glow) !important;
    transition: all var(--duration-fast) var(--ease-out) !important;
}
.nav-btn-primary:hover {
    background: var(--primary-dark) !important;
    color: #fff !important;
    box-shadow: 0 4px 14px var(--primary-glow) !important;
    transform: translateY(-1px);
}
.nav-av {
    width: 34px; height: 34px;
    border-radius: 50%;
    background: var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-2);
    font-size: 14px;
    cursor: pointer;
    margin-left: 8px;
    border: 2px solid transparent;
    transition: all var(--duration-fast) var(--ease-out);
    flex-shrink: 0;
}
.nav-av:hover { border-color: var(--primary); color: var(--primary); }
.nav-av.logged { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 导航内搜索 */
.header-search {
    flex: 1;
    max-width: 480px;
    margin: 0 24px;
    display: flex;
    align-items: center;
}
.search-input-wrapper { flex: 1; position: relative; display: flex; align-items: center; }
.search-input-wrapper .search-icon {
    position: absolute; left: 14px; color: var(--text-3);
    font-size: 14px; pointer-events: none; z-index: 1;
}
.search-input {
    width: 100%; height: 40px;
    padding: 0 36px 0 40px;
    border: 1.5px solid var(--border);
    border-right: none;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    font-size: var(--text-sm);
    color: var(--text);
    background: var(--surface);
    outline: none;
    transition: all var(--duration-fast) var(--ease-out);
}
.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}
.search-input::placeholder { color: var(--text-3); }
.search-clear {
    position: absolute; right: 8px;
    width: 22px; height: 22px;
    border: none; background: var(--border); color: var(--text-2);
    border-radius: 50%; font-size: 14px; line-height: 1;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: background var(--duration-fast) var(--ease-out);
    z-index: 1;
}
.search-clear:hover { background: var(--text-3); color: var(--text); }
.search-btn {
    height: 40px; padding: 0 20px;
    background: var(--primary); color: #fff;
    border: none; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: var(--text-sm); font-weight: 600;
    cursor: pointer; white-space: nowrap;
    transition: background var(--duration-fast) var(--ease-out);
}
.search-btn:hover { background: var(--primary-dark); }

/* ===== 5. 基础按钮 ===== */
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 24px;
    background: var(--primary); color: #fff;
    border-radius: var(--radius);
    font-size: var(--text-sm); font-weight: 600;
    transition: all var(--duration-fast) var(--ease-out);
    box-shadow: 0 2px 8px var(--primary-glow);
}
.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 16px var(--primary-glow);
    transform: translateY(-1px);
}
.btn-outline {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 22px;
    border: 1.5px solid var(--border);
    color: var(--text-2);
    border-radius: var(--radius);
    font-size: var(--text-sm); font-weight: 500;
    transition: all var(--duration-fast) var(--ease-out);
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-pale);
}

/* ===== 6. 民宿卡片 (全站统一) ===== */
.listing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.listing-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all var(--duration-slow) var(--ease-spring);
    cursor: pointer;
}
.listing-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}
.card-image-container {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: var(--border-light);
}
.card-image {
    position: absolute; top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease-out);
}
.listing-card:hover .card-image { transform: scale(1.07); }
.recommend-tag {
    position: absolute; top: 12px; left: 12px;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #fff;
    padding: 5px 12px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.02em;
    z-index: 1;
}
.card-info { padding: 16px 18px 18px; }
.card-title {
    font-size: 15px; font-weight: 650;
    color: var(--text); margin-bottom: 4px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.card-price {
    font-size: 17px; font-weight: 750;
    color: var(--primary); letter-spacing: -0.02em;
    margin-bottom: 10px;
}
.card-meta {
    display: flex; justify-content: space-between; align-items: center;
    font-size: var(--text-xs); color: var(--text-2);
    padding-top: 10px; border-top: 1px solid var(--border-light);
}
.meta-loc { display: flex; align-items: center; gap: 4px; }
.meta-loc i { font-size: 10px; color: var(--primary); }
.meta-right { display: flex; align-items: center; gap: 8px; }
.meta-views { display: flex; align-items: center; gap: 3px; color: var(--text-3); }
.meta-views i { font-size: 10px; color: var(--primary); }

/* ===== 7. 特色说明卡片 ===== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.feature-item {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    text-align: center;
    border: 1px solid var(--border-light);
    transition: all var(--duration) var(--ease-out);
}
.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border);
}
.feature-item i {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 16px;
    display: block;
}
.feature-item h3 {
    font-size: var(--text-lg);
    font-weight: 650;
    margin-bottom: 0;
    color: var(--text);
}
.feature-item p {
    font-size: var(--text-sm);
    color: var(--text-2);
    line-height: 1.75;
}

/* ===== 8. 页脚 (全站统一) ===== */
.footer {
    background: var(--footer-bg);
    color: var(--footer-text);
}
.footer .wrap { padding-top: 60px; padding-bottom: 60px; }
.ft-content { display: grid; grid-template-columns: 2fr 1fr; gap: 48px; }
.ft-brand {
    font-size: var(--text-xl); font-weight: 750; color: #fff;
    margin-bottom: 14px; display: block; letter-spacing: -0.02em;
    text-decoration: none; transition: opacity var(--duration-fast) var(--ease-out);
}
.ft-brand:hover { opacity: 0.85; }
.ft-brand b { color: var(--primary-light); font-weight: 800; }
.ft-desc { font-size: var(--text-sm); line-height: 1.9; max-width: 380px; }
.ft-right { display: flex; flex-direction: column; align-items: flex-end; gap: 16px; }
.ft-tel { font-size: var(--text-sm); color: var(--footer-text); }
.ft-link {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 24px;
    border: 1px solid var(--footer-link-border);
    border-radius: var(--radius-full);
    color: var(--footer-text);
    font-size: var(--text-sm); font-weight: 500;
    transition: all var(--duration) var(--ease-out);
}
.ft-link:hover {
    background: rgba(255,255,255,0.04);
    border-color: var(--primary-light);
    color: #fff;
}
.ft-bot { border-top: 1px solid var(--footer-border); padding: 14px 0; }
.ft-bot-inner {
    display: flex; justify-content: space-between; align-items: center;
    font-size: var(--text-xs); color: var(--footer-text);
}
.ft-bot-inner a { color: var(--footer-text); transition: color var(--duration-fast) var(--ease-out); }
.ft-bot-inner a:hover { color: var(--footer-text-hover); }
.ft-sep { margin: 0 10px; }

/* ===== 9. 汉堡菜单（移动端） ===== */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 44px; height: 44px;
    padding: 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    flex-shrink: 0;
    margin-left: 6px;
    transition: background var(--duration-fast) var(--ease-out);
}
.nav-hamburger:hover { background: var(--border-light); }
.nav-hamburger span {
    display: block;
    width: 20px; height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all var(--duration) var(--ease-out);
}
.mobile-menu-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.35);
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration) var(--ease-out);
}
.mobile-menu-overlay.open { opacity: 1; pointer-events: auto; }
.mobile-menu {
    display: none;
    position: fixed; top: 0; right: 0;
    width: 280px; height: 100%;
    background: var(--surface);
    z-index: 201;
    transform: translateX(100%);
    transition: transform var(--duration) var(--ease-out);
    box-shadow: -8px 0 30px rgba(0,0,0,0.1);
    overflow-y: auto;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 18px 20px;
    border-bottom: 1px solid var(--border-light);
}
.mobile-menu-logo {
    font-size: 18px; font-weight: 750;
    color: var(--text); letter-spacing: -0.02em;
}
.mobile-menu-logo b { color: var(--primary); font-weight: 800; }
.mobile-menu-header button {
    width: 36px; height: 36px;
    border-radius: 50%;
    font-size: 22px; color: var(--text-2);
    display: flex; align-items: center; justify-content: center;
    transition: background var(--duration-fast) var(--ease-out);
    cursor: pointer; border: none; background: none;
}
.mobile-menu-header button:hover { background: var(--border-light); }
.mobile-menu a {
    display: flex; align-items: center; gap: 12px;
    padding: 16px 20px;
    font-size: 15px; font-weight: 500;
    color: var(--text);
    border-bottom: 1px solid var(--border-light);
    transition: all var(--duration-fast) var(--ease-out);
}
.mobile-menu a:hover { background: var(--primary-pale); color: var(--primary); }
.mobile-menu a i { width: 20px; text-align: center; color: var(--text-3); }
.mobile-menu a:hover i { color: var(--primary); }

body.menu-open { overflow: hidden; }

/* ===== 10. 响应式 ===== */
@media (max-width: 1024px) {
    .listing-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .feature-grid { gap: 16px; }
}
@media (max-width: 768px) {
    .wrap { padding: 0 18px; }
    .nav-inner { height: 56px; }
    .nav-logo { font-size: 18px; }
    .nav-hide { display: none !important; }
    .nav-hamburger { display: flex; }
    .mobile-menu, .mobile-menu-overlay { display: block; }
    .header-search { max-width: none; margin: 0 8px; }
    .nav-menu { margin-left: initial; }
    .nav-av { margin-left: auto; }
    .search-input { height: 44px; font-size: 16px; }
    .search-btn { height: 44px; padding: 0 16px; min-width: 44px; }
    .pagination-btn, .pagination-page { min-width: 44px; min-height: 44px; }
    .section-title { font-size: var(--text-lg); margin-bottom: 20px; }
    .listing-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .card-info { padding: 12px 14px; }
    .card-title { font-size: 14px; }
    .card-price { font-size: 15px; margin-bottom: 8px; }
    .card-meta { font-size: 11px; }
    .feature-grid { gap: 14px; }
    .feature-item { padding: 20px 16px; }
    .ft-content { grid-template-columns: 1fr; gap: 32px; text-align: center; }
    .ft-right { align-items: center; }
    .ft-desc { max-width: 100%; }
    .ft-bot-inner { flex-direction: column; gap: 8px; text-align: center; }
    .footer .wrap { padding-top: 40px; padding-bottom: 40px; }
}
@media (max-width: 480px) {
    .wrap { padding: 0 14px; }
    .mobile-menu { width: 260px; }
    .listing-grid { gap: 8px; }
    .card-info { padding: 10px 12px; }
    .card-title { font-size: 13px; }
    .card-price { font-size: 14px; margin-bottom: 6px; }
    .card-meta { font-size: 11px; }
    .feature-grid { gap: 10px; }
    .feature-item { padding: 16px 12px; }
    .feature-item i { font-size: 22px; margin-bottom: 10px; }
    .feature-item h3 { font-size: 14px; }
    .feature-item p { font-size: 12px; }
}