/*
Theme Name: 坐月子 - 优化版
Theme URI: https://www.zuoyuezi.cn
Author: 坐月子网站团队
Description: 优化版 - 修复目录页显示，增强美观性，优化移动端体验
Version: 2.0.0
*/

/* ========================================
   设计系统 - 色彩体系（优化）
   ======================================== */
:root {
    /* 背景色 - 温暖米白 */
    --bg-primary: #FAF9F7;
    --bg-secondary: #F5F3EF;
    --bg-card: #FFFFFF;
    --bg-accent: #FFF8F5;
    
    /* 文字色 */
    --text-primary: #1A1A1A;
    --text-secondary: #4A4A4A;
    --text-muted: #888888;
    --text-light: #AAAAAA;
    
    /* 主题色 - 珊瑚粉 */
    --primary: #E87D7D;
    --primary-light: #F5A3A3;
    --primary-dark: #C95D5D;
    --primary-bg: #FFF0EE;
    
    /* 点缀色 */
    --accent-gold: #D4A869;
    --accent-green: #7CB393;
    --accent-blue: #6B9AC4;
    
    /* 边框色 */
    --border-light: #E8E4DD;
    --border-medium: #D5D0C7;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.15);
    
    /* 间距系统 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;
    
    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
}

/* ========================================
   基础样式
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   容器
   ======================================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* ========================================
   导航栏（优化）
   ======================================== */
.site-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo img {
    height: 45px;
    width: auto;
    transition: transform 0.3s ease;
}

.site-logo img:hover {
    transform: scale(1.02);
}

.site-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.site-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) 0;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.site-nav a:hover,
.site-nav .current-menu-item a {
    color: var(--primary);
}

.site-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.site-nav a:hover::after {
    width: 100%;
}

/* 移动端菜单 */
@media (max-width: 768px) {
    .site-nav ul {
        gap: var(--spacing-sm);
    }
    
    .site-nav a {
        font-size: 0.9rem;
    }
}

/* ========================================
   按钮样式（优化）
   ======================================== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    box-shadow: 0 4px 14px rgba(232, 125, 125, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(232, 125, 125, 0.45);
}

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

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

.btn-block {
    display: block;
    width: 100%;
}

/* ========================================
   卡片样式（优化）
   ======================================== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-light);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.card-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.card:hover .card-image {
    transform: scale(1.05);
}

.card-content {
    padding: var(--spacing-md);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.card-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.card-title a:hover {
    color: var(--primary);
}

.card-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.card-meta {
    color: var(--text-muted);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: var(--spacing-xs);
}

/* 评分星星 */
.rating-stars {
    color: #FFB800;
    letter-spacing: 2px;
}

/* ========================================
   章节样式
   ======================================== */
.section {
    padding: var(--spacing-2xl) 0;
}

@media (max-width: 768px) {
    .section {
        padding: var(--spacing-xl) 0;
    }
}

/* ========================================
   印章标签
   ======================================== */
.seal {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: 0.35rem 1rem;
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    border-radius: var(--radius-full);
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(232, 125, 125, 0.3);
}

/* ========================================
   标题样式
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

@media (max-width: 768px) {
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
}

/* ========================================
   画心布局（优化）
   ======================================== */
.painting-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
}

@media (max-width: 900px) {
    .painting-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

.painting-heart {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
}

.painting-colophon {
    background: linear-gradient(180deg, var(--bg-accent) 0%, var(--bg-secondary) 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary);
    height: fit-content;
}

/* ========================================
   淡入动画
   ======================================== */
.fade-in {
    animation: fadeIn 0.8s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

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

/* ========================================
   页脚（优化）
   ======================================== */
.site-footer {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, #E8E4DD 100%);
    border-top: 1px solid var(--border-light);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.footer-section p,
.footer-section li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 2;
}

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

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ========================================
   目录页列表优化
   ======================================== */
.post-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

@media (max-width: 768px) {
    .post-list {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
}

/* 空状态提示 */
.no-posts {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    color: var(--text-muted);
}

.no-posts-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* ========================================
   筛选栏优化
   ======================================== */
.filter-bar {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1.25rem;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    transition: all 0.3s ease;
    background: var(--bg-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(232, 125, 125, 0.1);
}

.tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

/* ========================================
   响应式网格优化
   ======================================== */
.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

@media (max-width: 768px) {
    .grid-cards {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   英雄区域优化
   ======================================== */
.hero-section {
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(232, 125, 125, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

/* ========================================
   加载状态
   ======================================== */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   工具类
   ======================================== */
.text-center { text-align: center; }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }