:root {
    --bg:      #f4f6fb;
    --surface: #ffffff;
    --surface-2:#edf4f8;
    --text:    #111827;
    --text-soft:#5a6a85;
    --line:    #e4eaf5;
    --primary: #2f80ed;
    --primary-2:#56b3cf;
    --accent:  #f5c518;
    --accent-dark:#d4a017;
    --shadow:  0 14px 34px rgba(23,55,102,0.10);
}
:root.dark-mode {
    --bg:      #061022;
    --surface: rgba(12,24,52,0.88);
    --surface-2:#10223d;
    --text:    #eef4ff;
    --text-soft:#a9b9de;
    --line:    rgba(112,153,255,0.18);
    --primary: #8fc8ff;
    --primary-2:#56b3cf;
    --accent:  #f5c518;
    --accent-dark:#ffd75e;
    --shadow:  0 14px 34px rgba(0,0,0,0.35);
}

/* ── Header ── */
header.site-header {
    background: var(--surface); border-bottom: 1px solid var(--line);
    padding: 18px 32px; display:flex; align-items:center; justify-content:space-between;
    position: relative; z-index: 2;
}
.logo { font-size:18px; font-weight:900; color:var(--text); text-decoration:none; }
.logo span { color:var(--accent-dark); }
.header-right { display:flex; align-items:center; gap:18px; }
.site-nav { display:flex; align-items:center; gap:18px; }
.site-nav a { color:var(--text-soft); text-decoration:none; font-weight:600; font-size:14px; }
.site-nav a:hover { color:var(--primary); }
.theme-toggle {
    width: 38px; height: 38px; border-radius: 12px;
    border: 1px solid var(--line); background: var(--surface-2);
    color: var(--text-soft); display: flex; align-items: center; justify-content: center;
    cursor: pointer; font-size: 17px; transition: border-color 0.2s, transform 0.2s;
}
.theme-toggle:hover { border-color: var(--primary-2); transform: translateY(-2px); }
.theme-toggle.spin { animation: spinIcon 0.5s ease; }
@keyframes spinIcon { from { transform: rotate(0deg) scale(0.7); opacity:0.3; } to { transform: rotate(360deg) scale(1); opacity:1; } }

/* ── Page hero ── */
.blog-hero { text-align:center; padding: 48px 24px 12px; }
.blog-hero h1 { font-size:32px; font-weight:900; color:var(--text); margin-bottom:12px; }
.blog-hero p { color:var(--text-soft); font-size:15px; line-height:1.7; max-width:560px; margin:0 auto; }

/* ── Main / posts grid ── */
main.site-main { flex:1; max-width:1180px; margin:0 auto; padding:32px 24px 80px; width:100%; }

.content-wrap { display:grid; grid-template-columns: 280px 1fr; gap:32px; align-items:start; }
.content-area { min-width:0; }

.posts-grid {
    display:grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap:28px;
}

/* ── Sidebar ── */
.sidebar { display:flex; flex-direction:column; gap:24px; position:sticky; top:20px; }
.widget {
    background:var(--surface); border:1px solid var(--line); border-radius:18px;
    padding:22px; box-shadow:var(--shadow);
}
.widget h3 {
    font-size:14px; font-weight:800; text-transform:uppercase; letter-spacing:0.4px;
    color:var(--text); margin-bottom:16px; padding-bottom:12px; border-bottom:1px solid var(--line);
}
.widget-search form { display:flex; gap:8px; }
.widget-search input[type="search"] {
    flex:1; border:1px solid var(--line); background:var(--surface-2); color:var(--text);
    border-radius:10px; padding:10px 12px; font-family:inherit; font-size:14px; outline:none;
}
.widget-search input[type="search"]:focus { border-color:var(--primary-2); }
.widget-search button {
    border:none; background:var(--primary); color:#fff; border-radius:10px;
    padding:0 16px; font-weight:700; cursor:pointer; font-size:14px;
}
.widget ul { list-style:none; }
.widget ul li { border-bottom:1px solid var(--line); }
.widget ul li:last-child { border-bottom:none; }
.widget ul li a {
    display:flex; justify-content:space-between; align-items:center; gap:8px;
    padding:12px 4px; text-decoration:none; color:var(--text-soft); font-size:14px; font-weight:600;
    border-radius:10px; transition: background 0.2s, color 0.2s, padding 0.2s;
}
.widget ul li a:hover { color:var(--primary); background:var(--surface-2); padding-left:10px; }
.widget ul li a.all-posts { color:var(--primary); font-weight:800; }
.widget ul li a .count {
    color:var(--text-soft); font-weight:700; font-size:12px; background:var(--surface-2);
    border-radius:20px; padding:2px 9px; min-width:22px; text-align:center;
}
.widget-recent .recent-list li a { flex-direction:column; align-items:flex-start; gap:4px; padding:12px 4px; }
.widget-recent .recent-list .title { color:var(--text); font-size:13px; font-weight:700; line-height:1.5; }
.widget-recent .recent-list .date { color:var(--text-soft); font-size:11px; font-weight:600; }
.widget-recent .recent-list li a:hover .title { color:var(--primary); }

@media(max-width:900px) {
    .content-wrap { grid-template-columns: 1fr; }
    .sidebar { order:2; position:static; }
}
.post-card {
    background:var(--surface); border:1px solid var(--line); border-radius:20px;
    overflow:hidden; box-shadow:var(--shadow); text-decoration:none; color:var(--text);
    display:flex; flex-direction:column; transition: transform 0.25s ease, border-color 0.25s ease;
}
.post-card:hover { transform: translateY(-6px); border-color: var(--primary-2); }
.post-card .thumb { width:100%; aspect-ratio:16/9; background:var(--surface-2); overflow:hidden; }
.post-card .thumb img { width:100%; height:100%; object-fit:cover; }
.post-card .body { padding:20px 22px 24px; display:flex; flex-direction:column; flex:1; }
.post-card .meta { font-size:12px; color:var(--text-soft); font-weight:600; letter-spacing:0.3px; text-transform:uppercase; margin-bottom:10px; }
.post-card h2 { font-size:18px; font-weight:800; margin-bottom:10px; line-height:1.4; }
.post-card .excerpt { font-size:14px; color:var(--text-soft); line-height:1.7; flex:1; margin-bottom:16px; }
.post-card .go { display:inline-flex; align-items:center; gap:6px; color:var(--primary); font-weight:700; font-size:13px; text-transform:uppercase; letter-spacing:0.3px; }

/* ── Pagination ── */
.pagination { display:flex; justify-content:center; gap:10px; margin-top:48px; flex-wrap:wrap; }
.pagination a, .pagination span {
    padding:10px 16px; border-radius:12px; border:1px solid var(--line);
    background:var(--surface); color:var(--text-soft); text-decoration:none; font-weight:700; font-size:14px;
}
.pagination .current { background:var(--primary); color:#fff; border-color:var(--primary); }
.pagination a:hover { border-color:var(--primary-2); color:var(--primary); }

/* ── Single post ── */
.single-post { max-width:100%; }
.single-post .post-thumb { width:100%; border-radius:20px; overflow:hidden; margin-bottom:28px; box-shadow:var(--shadow); }
.single-post .post-meta { font-size:13px; color:var(--text-soft); font-weight:600; text-transform:uppercase; letter-spacing:0.4px; margin-bottom:14px; }
.single-post h1 { font-size:32px; font-weight:900; line-height:1.3; margin-bottom:20px; color:var(--text); }
.single-post .post-content { font-size:16px; line-height:1.9; color:var(--text); }
.single-post .post-content p { margin-bottom:20px; }
.single-post .post-content h2 { font-size:22px; font-weight:800; margin:32px 0 14px; }
.single-post .post-content h3 { font-size:19px; font-weight:800; margin:28px 0 12px; }
.single-post .post-content img { border-radius:16px; margin:20px 0; }
.single-post .post-content a { color:var(--primary); font-weight:600; }
.single-post .post-content ul, .single-post .post-content ol { margin:0 0 20px 22px; line-height:1.8; }
.single-post .post-content blockquote {
    border-left:4px solid var(--accent); padding:14px 22px; margin:24px 0;
    background:var(--surface-2); border-radius:0 14px 14px 0; color:var(--text-soft); font-style:italic;
}
.back-to-blog { display:inline-flex; align-items:center; gap:6px; color:var(--text-soft); text-decoration:none; font-weight:600; font-size:14px; margin-bottom:24px; }
.back-to-blog:hover { color:var(--primary); }

.post-cta {
    margin-top:48px; background:var(--surface); border:1px solid var(--line); border-radius:20px;
    padding:32px; text-align:center; box-shadow:var(--shadow);
}
.post-cta h3 { font-size:20px; font-weight:800; margin-bottom:10px; }
.post-cta p { color:var(--text-soft); font-size:14px; margin-bottom:18px; }
.post-cta .btn {
    display:inline-block; background:var(--accent); color:#1e2d4a;
    padding:13px 28px; border-radius:50px; font-weight:800; text-decoration:none;
}

/* ── Empty state ── */
.no-posts { text-align:center; padding:80px 24px; }
.no-posts .ic { font-size:56px; margin-bottom:20px; }
.no-posts h2 { font-size:24px; font-weight:900; margin-bottom:12px; }
.no-posts p { color:var(--text-soft); }

/* ── Footer ── */
footer.site-footer {
    text-align:center; padding:24px 20px 32px; color:var(--text-soft); font-size:13px;
    border-top:1px solid var(--line); position:relative; z-index:1;
}
footer.site-footer a { color:var(--primary); text-decoration:none; font-weight:600; }
footer.site-footer a:hover { opacity:0.75; }

@media(max-width:600px) {
    header.site-header { padding:12px 16px; flex-wrap:wrap; row-gap:10px; }
    .logo { font-size:14px; }
    .header-right { gap:8px; flex-wrap:wrap; justify-content:flex-end; }
    .site-nav { gap:10px; }
    .site-nav a { font-size:11px; white-space:nowrap; }
    .theme-toggle { width:32px; height:32px; font-size:14px; }
    .blog-hero { padding:28px 16px 8px; }
    .blog-hero h1 { font-size:21px; }
    .blog-hero p { font-size:13px; }
    main.site-main { padding:20px 14px 50px; }
    .posts-grid { grid-template-columns:1fr; gap:18px; }
    .post-card .body { padding:16px 18px 20px; }
    .single-post h1 { font-size:22px; }
    .single-post .post-content { font-size:15px; }
    .widget { padding:18px; }
    .post-cta { padding:24px 20px; }
}