/*
Theme Name: Sndow CMS Default Theme
Description: 这是 Sndow CMS 的官方默认主题，采用简约响应式设计。
Version: 1.0.2
Author: Sndow Team
*/

:root {
    --sd-primary: #6366f1;
    --sd-primary-dark: #4f46e5;
    --sd-primary-light: rgba(99, 102, 241, 0.08);
    --sd-bg: #f8fafc;
    --sd-text-main: #1e293b;
    --sd-text-muted: #64748b;
    --sd-border: #e2e8f0;
    --sd-card-bg: #ffffff;
    --sd-shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --sd-shadow-md: 0 10px 25px -5px rgba(0,0,0,0.05);
    --sd-radius: 16px;
}

body {
    background-color: var(--sd-bg);
    color: var(--sd-text-main);
    font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--sd-primary);
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

a:hover {
    color: var(--sd-primary-dark);
}

/* --- Header & Navigation --- */
.navbar {
    background: rgba(255, 255, 255, 0.8) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--sd-border);
    padding: 1rem 0;
    transition: all 0.3s;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: -0.8px;
    color: #0f172a !important;
}

.navbar-brand i {
    color: var(--sd-primary);
    margin-right: 8px;
}

.nav-link {
    font-weight: 500;
    color: var(--sd-text-muted) !important;
    padding: 0.5rem 1rem !important;
    border-radius: 50px;
    transition: all 0.2s;
}

.nav-link:hover, .nav-item.active .nav-link {
    color: var(--sd-primary) !important;
    background: var(--sd-primary-light);
}

/* --- Nested Dropdowns --- */
.dropdown-menu {
    border: none;
    box-shadow: var(--sd-shadow-md);
    border-radius: 12px;
    padding: 0.5rem;
    margin-top: 10px !important;
}

.dropdown-item {
    border-radius: 8px;
    padding: 0.6rem 1rem;
    font-weight: 500;
    color: var(--sd-text-main);
    transition: all 0.2s;
}

.dropdown-item:hover {
    background: var(--sd-primary-light);
    color: var(--sd-primary);
}

.dropdown-submenu {
    position: relative;
}

.dropdown-submenu > .dropdown-menu {
    top: 0;
    left: 100%;
    margin-top: -5px !important;
    margin-left: 5px !important;
}

.dropdown-submenu:hover > .dropdown-menu {
    display: block;
}

.dropdown-item.dropdown-toggle::after {
    transform: rotate(-90deg);
    vertical-align: middle;
    margin-left: auto;
    float: right;
    margin-top: 8px;
}

/* --- Content Cards --- */
.post-card {
    background: var(--sd-card-bg);
    border-radius: var(--sd-radius);
    border: 1px solid var(--sd-border);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--sd-shadow-sm);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.post-card:hover {
    box-shadow: var(--sd-shadow-md);
    border-color: var(--sd-primary);
}

.post-card-title {
    font-weight: 800;
    font-size: 1.45rem;
    margin-bottom: 0.75rem;
    color: #0f172a;
    line-height: 1.4;
}

.post-card-excerpt {
    color: var(--sd-text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-meta {
    font-size: 0.8rem;
    color: #94a3b8;
    display: flex;
    align-items: center;
    gap: 15px;
}

.post-meta i {
    margin-right: 4px;
}

/* --- Sidebar --- */
.sidebar-widget {
    background: transparent;
    margin-bottom: 2.5rem;
}

.widget-title {
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    color: #94a3b8;
    letter-spacing: 1.5px;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
}

.widget-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--sd-border);
    margin-left: 15px;
}

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

.widget-list li {
    margin-bottom: 10px;
}

.widget-list a {
    display: block;
    padding: 8px 12px;
    background: white;
    border-radius: 10px;
    border: 1px solid var(--sd-border);
    color: var(--sd-text-main);
    font-size: 0.9rem;
    font-weight: 500;
}

.widget-list a:hover {
    border-color: var(--sd-primary);
    background: var(--sd-primary-light);
    transform: translateX(5px);
}

/* --- Article Detail --- */
.post-header {
    margin-bottom: 2.5rem;
    text-align: center;
}

.post-header h1 {
    font-weight: 800;
    font-size: 2.5rem;
    color: #0f172a;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.post-content {
    font-size: 1.05rem;
    color: #334155;
    background: white;
    padding: 2.5rem;
    border-radius: var(--sd-radius);
    border: 1px solid var(--sd-border);
    box-shadow: var(--sd-shadow-sm);
}

.post-content h2, .post-content h3 {
    font-weight: 800;
    color: #0f172a;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.post-content p {
    margin-bottom: 1.25rem;
}

/* --- Comments --- */
.comments-area {
    margin-top: 3rem;
}

.comment-item {
    background: white;
    padding: 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--sd-border);
    margin-bottom: 1rem;
}

/* --- Pagination --- */
.pagination {
    gap: 8px;
}

.page-link {
    border-radius: 10px !important;
    border: 1px solid var(--sd-border);
    color: var(--sd-text-muted);
    font-weight: 600;
    padding: 0.6rem 1rem;
}

.page-item.active .page-link {
    background-color: var(--sd-primary);
    border-color: var(--sd-primary);
}

/* --- Footer --- */
.site-footer {
    padding: 4rem 0;
    margin-top: 5rem;
    border-top: 1px solid var(--sd-border);
    background: white;
    color: var(--sd-text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .post-header h1 { font-size: 1.8rem; }
    .post-content { padding: 1.5rem; }
}

/* Breadcrumbs */
.breadcrumb {
    padding: 0.75rem 1.25rem;
    background: white;
    border-radius: 50px;
    border: 1px solid var(--sd-border);
    display: inline-flex;
}
.breadcrumb-item + .breadcrumb-item::before {
    content: "\F285";
    font-family: "bootstrap-icons";
    font-size: 0.7rem;
    color: #cbd5e1;
}

/* Author Box */
.author-box {
    border: 1px solid var(--sd-border);
    transition: transform 0.3s;
}
.author-box:hover {
    transform: translateY(-2px);
}

/* Related Posts */
.related-card {
    transition: all 0.3s;
}
.related-card:hover img {
    transform: scale(1.05);
}
.transition-transform {
    transition: transform 0.5s ease;
}
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Transitions */
.transition-all {
    transition: all 0.3s ease;
}
.hover-shadow:hover {
    box-shadow: 0 10px 30px -5px rgba(0,0,0,0.1) !important;
}
.x-small {
    font-size: 0.75rem;
}
.cursor-pointer {
    cursor: pointer;
}
.hover-opacity-100:hover {
    opacity: 1 !important;
}

/* Tag Cloud */
.tag-cloud-link {
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.8rem;
    color: var(--sd-text-muted) !important;
    background-color: white !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.tag-cloud-link:hover {
    color: var(--sd-primary) !important;
    border-color: var(--sd-primary) !important;
    transform: translateY(-2px);
    background-color: var(--sd-primary-light) !important;
}
.tag-cloud-link i {
    color: #cbd5e1;
    transition: color 0.3s;
}
.tag-cloud-link:hover i {
    color: var(--sd-primary);
}