:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #14141f;
    --bg-card: #1a1a2e;
    --border: #2a2a4a;
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b8;
    --text-muted: #6a6a8a;
    --primary: #f59e0b;
    --primary-hover: #d97706;
    --accent: #8b5cf6;
    --accent-hover: #7c3aed;
    --success: #22c55e;
    --danger: #ef4444;
    --font-family: 'Inter', -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    letter-spacing: -0.01em;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.site-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.header-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    font-size: 22px;
    font-weight: 700;
    text-decoration: none;
}
.header-logo i { color: var(--primary); font-size: 28px; }
.header-logo:hover { text-decoration: none; }

.main-nav .nav-list {
    display: flex;
    list-style: none;
    gap: 4px;
}
.main-nav .nav-list > li { position: relative; }
.main-nav .nav-list a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s;
    text-decoration: none;
}
.main-nav .nav-list a:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}
.main-nav .has-submenu > a::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 10px;
    margin-left: 4px;
}
.main-nav .submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 8px;
    min-width: 220px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    z-index: 50;
}
.main-nav .has-submenu:hover .submenu { display: block; }
.main-nav .submenu a {
    padding: 8px 12px;
    font-size: 13px;
    border-radius: 6px;
}
.main-nav .submenu a:hover { background: var(--sidebar-hover); }

.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

.lang-switcher {
    display: flex;
    gap: 6px;
    margin-left: 16px;
}
.lang-switcher a {
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.2s;
}
.lang-switcher a:hover { color: var(--text-primary); background: var(--bg-card); }
.lang-switcher a.active { color: var(--primary); background: rgba(245,158,11,0.1); }

.site-main { min-height: calc(100vh - 70px - 200px); padding: 40px 0; }

.hero {
    text-align: center;
    padding: 60px 0 40px;
}
.hero h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
    margin-top: 32px;
}
.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.2s, transform 0.2s;
}
.blog-card:hover { border-color: var(--border-light); transform: translateY(-2px); }
.blog-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--bg-secondary);
}
.blog-card-body { padding: 20px; }
.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 10px;
}
.blog-card-category {
    display: inline-flex;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}
.blog-card-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}
.blog-card-title a { color: var(--text-primary); }
.blog-card-title a:hover { color: var(--primary); text-decoration: none; }
.blog-card-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}
.blog-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-muted);
}

.blog-sidebar { margin-top: 32px; }
.sidebar-widget {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}
.sidebar-widget h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}
.sidebar-widget ul { list-style: none; }
.sidebar-widget ul li { padding: 6px 0; }
.sidebar-widget ul li a { font-size: 14px; }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-cloud a {
    padding: 4px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
}
.tag-cloud a:hover { border-color: var(--accent); color: var(--accent); }

.article-full { max-width: 800px; margin: 0 auto; }
.article-header { margin-bottom: 32px; }
.article-header h1 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 14px;
    color: var(--text-muted);
}
.article-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 32px;
}
.article-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-primary);
}
.article-content h2 { font-size: 24px; margin: 32px 0 16px; }
.article-content h3 { font-size: 20px; margin: 24px 0 12px; }
.article-content p { margin-bottom: 16px; }
.article-content img { max-width: 100%; border-radius: 8px; margin: 16px 0; }
.article-content blockquote {
    border-left: 3px solid var(--accent);
    padding: 12px 20px;
    margin: 16px 0;
    background: var(--bg-card);
    border-radius: 0 8px 8px 0;
    color: var(--text-secondary);
    font-style: italic;
}
.article-content pre {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    overflow-x: auto;
    font-size: 14px;
    margin: 16px 0;
}
.article-content code { font-family: 'Courier New', monospace; }

.article-share {
    display: flex;
    gap: 8px;
    margin: 32px 0;
    padding: 20px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
}
.share-btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

.article-author {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin: 24px 0;
}
.article-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}
.article-author-info h4 { font-size: 16px; font-weight: 600; }
.article-author-info p { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}
.contact-form .form-group { margin-bottom: 20px; }
.contact-form label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus { outline: none; border-color: var(--accent); }
.contact-form textarea { min-height: 150px; resize: vertical; }
.contact-form button {
    padding: 12px 32px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border: none;
    border-radius: 8px;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: opacity 0.2s;
}
.contact-form button:hover { opacity: 0.9; }

.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 40px 0;
    margin-top: 60px;
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 18px;
    transition: all 0.2s;
}
.footer-social a:hover { border-color: var(--accent); color: var(--accent); }
.footer-text p { font-size: 13px; color: var(--text-muted); }

@media (max-width: 768px) {
    .main-nav { display: none; }
    .main-nav.open {
        display: block;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border);
        padding: 16px;
    }
    .main-nav .nav-list { flex-direction: column; }
    .main-nav .submenu { position: static; box-shadow: none; margin-left: 20px; }
    .hamburger { display: block; }
    .hero h1 { font-size: 28px; }
    .blog-grid { grid-template-columns: 1fr; }
    .article-header h1 { font-size: 24px; }
}