:root {
  color-scheme: dark;
  --bg: #060816;
  --surface: rgba(255,255,255,0.06);
  --surface-strong: rgba(255,255,255,0.1);
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #4f8cff;
  --accent-2: #7c3aed;
  --border: rgba(255,255,255,0.12);
}

body.light {
  color-scheme: light;
  --bg: #f5f7ff;
  --surface: rgba(9, 14, 30, 0.04);
  --surface-strong: rgba(9, 14, 30, 0.08);
  --text: #0f172a;
  --muted: #475569;
  --accent: #2563eb;
  --accent-2: #7c3aed;
  --border: rgba(15, 23, 42, 0.12);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, 'Segoe UI', Roboto, sans-serif;
  background: radial-gradient(circle at top left, rgba(79,140,255,0.2), transparent 30%), var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; }
.container { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(20px);
  background: rgba(6,8,22,0.75); border-bottom: 1px solid var(--border);
}
body.light .site-header { background: rgba(245,247,255,0.85); }
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 1rem 0; }
.brand { display: inline-flex; align-items: center; gap: .7rem; font-weight: 800; font-size: 1.1rem; }
.brand__mark { width: 2.5rem; height: 2.5rem; border-radius: 50%; display: grid; place-items: center; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: white; }
.nav-links { display: flex; align-items: center; gap: 1rem; color: var(--muted); }
.btn, .btn-secondary, .btn-danger { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; border: 0; padding: .8rem 1rem; border-radius: 999px; cursor: pointer; transition: transform .2s ease, background .2s ease; }
.btn:hover, .btn-secondary:hover, .btn-danger:hover { transform: translateY(-1px); }
.btn { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: white; }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: rgba(248,113,113,0.15); color: #fecaca; border: 1px solid rgba(248,113,113,0.2); }
.hero { padding: 4rem 0 3rem; }
.hero__content { display: grid; gap: 1.2rem; max-width: 760px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.3rem); margin: 0; line-height: 1.1; }
.hero p { margin: 0; color: var(--muted); font-size: 1.05rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1rem; }
.search-bar { display: flex; flex-wrap: wrap; gap: .7rem; margin: 1.5rem 0 2rem; }
.search-bar input, .search-bar select, .form-grid input, .form-grid textarea, .form-grid select { width: 100%; padding: .9rem 1rem; border-radius: 14px; border: 1px solid var(--border); background: var(--surface); color: var(--text); }
.search-bar input::placeholder, .form-grid input::placeholder, .form-grid textarea::placeholder { color: var(--muted); }
.posts-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.2rem; margin-bottom: 2rem; }
.blog-card { background: var(--surface); border: 1px solid var(--border); border-radius: 24px; overflow: hidden; box-shadow: 0 18px 45px rgba(0,0,0,0.16); }
.blog-card__image { aspect-ratio: 16/9; object-fit: cover; }
.blog-card__content { padding: 1rem 1rem 1.2rem; }
.blog-card__meta, .blog-card__footer, .post-meta, .pill-row { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; justify-content: space-between; color: var(--muted); font-size: .9rem; }
.blog-card h3 { margin: .6rem 0 .4rem; font-size: 1.15rem; }
.blog-card p { margin: 0; color: var(--muted); }
.empty-state { padding: 2.5rem; text-align: center; color: var(--muted); background: var(--surface); border: 1px dashed var(--border); border-radius: 20px; }
.pager { display: flex; gap: .6rem; justify-content: center; margin: 2rem 0 3rem; }
.pager__btn { border: 1px solid var(--border); background: var(--surface); color: var(--text); padding: .6rem .85rem; border-radius: 999px; cursor: pointer; }
.pager__btn.active { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: white; }
.post-article { padding: 2rem 0 4rem; }
.post-hero { display: grid; gap: 1.2rem; margin-bottom: 2rem; }
.post-hero__image { border-radius: 28px; aspect-ratio: 16/9; width: 100%; object-fit: cover; border: 1px solid var(--border); }
.post-hero h1 { margin: 0; font-size: clamp(2rem, 4vw, 2.8rem); }
.post-hero p { margin: 0; color: var(--muted); max-width: 760px; }
.post-layout { display: grid; grid-template-columns: 2.2fr .9fr; gap: 2rem; }
.post-content { background: var(--surface); border: 1px solid var(--border); border-radius: 24px; padding: 2rem; }
.post-content h2, .post-content h3 { scroll-margin-top: 88px; }
.post-content pre { overflow-x: auto; background: rgba(0,0,0,0.25); border: 1px solid var(--border); border-radius: 16px; padding: 1rem; }
.post-content code { background: rgba(255,255,255,0.09); border-radius: 6px; padding: .1rem .35rem; }
.post-content blockquote { margin: 1rem 0; padding: 1rem 1.2rem; border-left: 4px solid var(--accent); background: rgba(79,140,255,0.1); border-radius: 0 12px 12px 0; color: var(--muted); }
.post-sidebar { display: grid; gap: 1rem; align-self: start; }
.toc, .related-posts, .card { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 1rem; }
.toc ul, .related-posts { list-style: none; padding: 0; margin: .3rem 0 0; display: grid; gap: .5rem; }
.related-card { display: block; padding: .7rem .8rem; border-radius: 12px; background: rgba(255,255,255,0.05); }
.share-bar { display: flex; gap: .6rem; margin-top: 1.2rem; flex-wrap: wrap; }
.breadcrumbs { color: var(--muted); margin-bottom: 1rem; }
.admin-shell { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }
.sidebar { padding: 1.2rem; border-right: 1px solid var(--border); background: rgba(255,255,255,0.03); }
.sidebar h2 { margin-top: 0; }
.sidebar a, .sidebar button { width: 100%; text-align: left; margin-bottom: .5rem; }
.main-panel { padding: 1.4rem 1.4rem 2rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-grid { display: grid; gap: .9rem; }
.card { margin-bottom: 1rem; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: .75rem .6rem; border-bottom: 1px solid var(--border); }
.table button { margin-right: .4rem; }
.status-pill { display: inline-flex; padding: .35rem .6rem; border-radius: 999px; font-size: .8rem; background: rgba(255,255,255,0.08); }
.status-pill.published { color: #86efac; background: rgba(34,197,94,0.16); }
.status-pill.draft { color: #fde68a; background: rgba(245,158,11,0.16); }
.hidden { display: none !important; }
@media (max-width: 900px) {
  .posts-grid { grid-template-columns: 1fr 1fr; }
  .post-layout, .admin-shell, .grid-2 { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid var(--border); }
}
@media (max-width: 640px) {
  .posts-grid { grid-template-columns: 1fr; }
  .navbar { flex-wrap: wrap; gap: .8rem; }
  .hero { padding-top: 2.3rem; }
}