/**
 * 响应式样式
 *
 * @package Flavor_Starter
 * @since 1.0.0
 */

/* ==========================================================================
   页头样式
   ========================================================================== */

.site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-md);
}

.site-branding {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.site-logo img {
    max-height: 50px;
    width: auto;
}

.site-title {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.site-title a {
    color: var(--color-text);
}

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

.site-description {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* ==========================================================================
   导航菜单
   ========================================================================== */

.main-navigation {
    display: none;
}

.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    cursor: pointer;
}

.menu-toggle-icon {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    position: relative;
}

.menu-toggle-icon::before,
.menu-toggle-icon::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-text);
}

.menu-toggle-icon::before {
    top: -7px;
}

.menu-toggle-icon::after {
    bottom: -7px;
}

.primary-menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.primary-menu li {
    margin: 0;
}

.primary-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    font-weight: 500;
}

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

/* ==========================================================================
   文章卡片
   ========================================================================== */

.posts-list {
    display: grid;
    gap: var(--spacing-xl);
}

.post-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-normal);
}

.post-card:hover {
    box-shadow: var(--shadow-md);
}

.post-card .post-thumbnail img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

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

.entry-title {
    margin: 0 0 var(--spacing-sm);
    font-size: var(--font-size-xl);
}

.entry-title a {
    color: var(--color-text);
}

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

.entry-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.entry-meta a {
    color: var(--color-text-light);
}

.entry-meta a:hover {
    color: var(--color-primary);
}

.entry-summary {
    color: var(--color-text-light);
    line-height: 1.7;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-primary);
}

/* ==========================================================================
   侧边栏
   ========================================================================== */

.widget {
    background: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
}

.widget-title {
    margin: 0 0 var(--spacing-md);
    font-size: var(--font-size-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.widget ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.widget li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.widget li:last-child {
    border-bottom: none;
}

/* ==========================================================================
   页脚
   ========================================================================== */

.site-footer {
    background: var(--color-bg-dark);
    color: #fff;
    margin-top: auto;
}

.footer-widgets {
    padding: var(--spacing-2xl) 0;
}

.footer-widgets-grid {
    display: grid;
    gap: var(--spacing-xl);
}

.footer-widget-area .widget {
    background: transparent;
    box-shadow: none;
    padding: 0;
}

.footer-widget-area .widget-title {
    color: #fff;
    border-bottom-color: var(--color-primary);
}

.footer-widget-area a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-widget-area a:hover {
    color: #fff;
}

.footer-bottom {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
}

.copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

.copyright a {
    color: #fff;
}

.footer-menu,
.social-menu {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-menu a,
.social-menu a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
}

.footer-menu a:hover,
.social-menu a:hover {
    color: #fff;
}

/* ==========================================================================
   分页
   ========================================================================== */

.pagination {
    margin-top: var(--spacing-2xl);
}

.pagination .nav-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.pagination .page-numbers {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-weight: 500;
}

.pagination .page-numbers.current,
.pagination .page-numbers:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* ==========================================================================
   响应式断点
   ========================================================================== */

/* 平板及以上 */
@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }

    .main-navigation {
        display: block;
    }

    .primary-menu {
        display: flex;
        gap: var(--spacing-sm);
    }

    .posts-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-widgets-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-bottom-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

/* 桌面及以上 */
@media (min-width: 1024px) {
    .header-inner {
        padding: var(--spacing-lg) 0;
    }

    .site-title {
        font-size: var(--font-size-2xl);
    }

    .posts-list.blog-layout {
        grid-template-columns: 1fr;
    }

    .posts-list.magazine-layout {
        grid-template-columns: repeat(3, 1fr);
    }

    .post-card .post-thumbnail img {
        height: 250px;
    }
}

/* 大屏幕 */
@media (min-width: 1200px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* ==========================================================================
   辅助类
   ========================================================================== */

.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

.skip-link {
    background: var(--color-primary);
    color: #fff;
    padding: var(--spacing-sm) var(--spacing-md);
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999;
    border-radius: var(--radius-md);
}

.skip-link:focus {
    top: var(--spacing-md);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
}

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

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