:root {
  --bg: #f4f6fb;
  --bg-2: #ffffff;
  --text: #1a1d29;
  --muted: #5c6478;
  --border: #e2e6f0;
  --accent: #2563eb;
  --accent-2: #7c3aed;
  --accent-3: #059669;
  --danger: #dc2626;
  --shadow: 0 4px 20px rgba(26, 29, 41, .08);
  --radius: 14px;
  --header-bg: rgba(255, 255, 255, .85);
  --code-bg: #eef1f8;
}

[data-theme="dark"] {
  --bg: #0d1117;
  --bg-2: #161b24;
  --text: #e6e9f0;
  --muted: #98a1b3;
  --border: #2b3341;
  --accent: #5b8def;
  --accent-2: #a78bfa;
  --accent-3: #34d399;
  --danger: #f87171;
  --shadow: 0 4px 20px rgba(0, 0, 0, .4);
  --header-bg: rgba(13, 17, 23, .88);
  --code-bg: #1c2330;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background .25s, color .25s;
}

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

.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 0; flex-wrap: wrap;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; color: var(--text); text-decoration: none !important; }
.logo-mark { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; font-size: 1.1rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; }

.nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; flex: 1; }
.nav a {
  color: var(--text); padding: 8px 12px; border-radius: 8px; font-weight: 600; font-size: .92rem;
  text-decoration: none !important; transition: background .15s, color .15s;
}
.nav a:hover, .nav a.active { background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent); }

.header-tools { display: flex; align-items: center; gap: 8px; margin-left: auto; }

.icon-btn {
  border: 1px solid var(--border); background: var(--bg-2); color: var(--text);
  width: 40px; height: 40px; border-radius: 10px; cursor: pointer; font-size: 1.05rem;
  display: grid; place-items: center; transition: border .15s, transform .15s;
}
.icon-btn:hover { border-color: var(--accent); transform: translateY(-1px); }

.lang-select { border: 1px solid var(--border); background: var(--bg-2); color: var(--text);
  padding: 8px 10px; border-radius: 10px; font-size: .9rem; font-weight: 600; cursor: pointer; }
.lang-select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.menu-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, rgba(37,99,235,.12), rgba(124,58,237,.12));
  border-bottom: 1px solid var(--border);
  padding: 48px 0 36px; text-align: center;
}
.hero h1 { font-size: clamp(1.7rem, 4vw, 2.6rem); font-weight: 800; letter-spacing: -.02em; }
.hero p { color: var(--muted); margin-top: 10px; max-width: 640px; margin-inline: auto; font-size: 1.05rem; }

/* ---------- Layout ---------- */
.section { padding: 36px 0; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.section-head h2 { font-size: 1.35rem; display: flex; align-items: center; gap: 10px; }
.section-head .cat-dot { width: 12px; height: 12px; border-radius: 4px; display: inline-block; }
.link-more { font-weight: 600; font-size: .9rem; }

/* ---------- Search bar ---------- */
.searchbar { display: flex; max-width: 560px; margin: 0 auto; margin-top: 18px; }
.searchbar input {
  flex: 1; padding: 12px 16px; border: 1px solid var(--border); background: var(--bg-2); color: var(--text);
  border-radius: 12px 0 0 12px; font-size: .95rem;
}
.searchbar input:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; z-index: 1; }
.searchbar button {
  padding: 12px 20px; border: none; background: var(--accent); color: #fff; font-weight: 700;
  border-radius: 0 12px 12px 0; cursor: pointer; font-size: .95rem;
}

/* ---------- Cards grid ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(26,29,41,.14); }
.card-top { padding: 16px 18px 4px; display: flex; align-items: center; gap: 8px; }
.card-top .badge { font-size: .78rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; color: #fff; }
.card-body { padding: 10px 18px 6px; }
.card-body h3 { font-size: 1.05rem; line-height: 1.4; }
.card-body h3 a { color: var(--text); text-decoration: none !important; }
.card-body h3 a:hover { color: var(--accent); }
.card-body p { color: var(--muted); font-size: .92rem; margin-top: 6px; }
.card-meta { margin-top: auto; padding: 12px 18px 16px; display: flex; align-items: center; justify-content: space-between; font-size: .8rem; color: var(--muted); }

/* ---------- Single post ---------- */
.post { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: clamp(20px, 4vw, 44px); max-width: 820px; margin: 36px auto; }
.post-img { width: 100%; max-height: 480px; object-fit: cover; border-radius: 12px; margin: 0 0 22px;
  display: block; border: 1px solid var(--border); }
.post .back { font-size: .9rem; font-weight: 600; }
.post h1 { font-size: clamp(1.4rem, 3vw, 2rem); margin-top: 14px; line-height: 1.3; }
.post .meta { color: var(--muted); font-size: .85rem; margin-top: 10px; display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.post .divider { border: none; border-top: 1px solid var(--border); margin: 22px 0; }
.post .content { font-size: 1.05rem; }
.post .content p { margin-bottom: 1em; }
.post .content ul, .post .content ol { margin: 0 0 1em 1.4em; }
.post .content code { background: var(--code-bg); padding: 2px 6px; border-radius: 6px; font-size: .9em; }
.post .content pre { background: var(--code-bg); padding: 14px; border-radius: 10px; overflow-x: auto; margin-bottom: 1em; }
.post .content blockquote { border-left: 4px solid var(--accent); padding-left: 14px; color: var(--muted); margin-bottom: 1em; }
.post .content a { text-decoration: underline; }

/* ---------- Footer ---------- */
.site-footer { margin-top: auto; border-top: 1px solid var(--border); background: var(--bg-2); padding: 28px 0 20px; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding-bottom: 18px; }
.footer-grid h4 { font-size: .95rem; margin-bottom: 8px; }
.footer-grid p { color: var(--muted); font-size: .88rem; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 4px; }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 14px; display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; color: var(--muted); font-size: .82rem; }

/* ---------- Pagination ---------- */
.pager { display: flex; justify-content: center; gap: 8px; margin-top: 28px; }
.pager a, .pager span {
  padding: 8px 14px; border: 1px solid var(--border); background: var(--bg-2); color: var(--text);
  border-radius: 9px; font-weight: 600; font-size: .9rem; text-decoration: none !important;
}
.pager a:hover { border-color: var(--accent); color: var(--accent); }
.pager .cur { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ---------- Login / Admin forms ---------- */
.auth-wrap { max-width: 400px; margin: 60px auto; background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.auth-wrap h1 { font-size: 1.3rem; text-align: center; margin-bottom: 6px; }
.auth-wrap .sub { text-align: center; color: var(--muted); font-size: .88rem; margin-bottom: 22px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 13px; border: 1px solid var(--border); background: var(--bg-2); color: var(--text);
  border-radius: 10px; font-size: .95rem; font-family: inherit;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .05);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; }
.field textarea { min-height: 240px; resize: vertical; line-height: 1.6; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--accent); color: #fff; border: none; padding: 12px 20px; border-radius: 10px;
  font-weight: 700; font-size: .95rem; cursor: pointer; text-decoration: none !important; transition: opacity .15s;
}
.btn:hover { opacity: .88; color: #fff; }
.btn.secondary { background: var(--bg-2); color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--danger); }
.btn.sm { padding: 8px 14px; font-size: .85rem; border-radius: 8px; }
.btn.sm.danger:hover { opacity: .9; }

/* ---------- Admin table ---------- */
.admin-shell { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px 40px; }
.admin-card { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); margin-top: 24px; overflow: hidden; }
.admin-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 18px 22px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.admin-head h1 { font-size: 1.2rem; }
.table-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: .9rem; }
.tbl th { text-align: left; padding: 10px 14px; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); border-bottom: 1px solid var(--border); }
.tbl td { padding: 12px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.tbl tr:last-child td { border-bottom: none; }
.tbl tr:hover td { background: color-mix(in srgb, var(--accent) 4%, transparent); }
.pl-langs { display: flex; gap: 5px; flex-wrap: wrap; }
.lang-chip { font-size: .72rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.lang-chip.ok { color: var(--accent-3); border-color: color-mix(in srgb, var(--accent-3) 45%, transparent); }
.lang-chip.missing { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 45%, transparent); }
.tag { display: inline-block; font-size: .74rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.tag.on { background: color-mix(in srgb, var(--accent-3) 15%, transparent); color: var(--accent-3); }
.tag.off { background: color-mix(in srgb, var(--danger) 15%, transparent); color: var(--danger); }
.actions a, .actions button { margin-right: 6px; }

.note { padding: 12px 16px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-2); font-size: .9rem; }
.note.ok { border-color: color-mix(in srgb, var(--accent-3) 45%, transparent); color: var(--accent-3); }
.note.err { border-color: color-mix(in srgb, var(--danger) 45%, transparent); color: var(--danger); }
.note.info { border-color: var(--accent); color: var(--accent); }
.langs-tabs { display: flex; gap: 6px; margin: 18px 0 4px; flex-wrap: wrap; }
.langs-tabs .tab { padding: 7px 14px; border: 1px solid var(--border); border-radius: 999px; font-weight: 700; font-size: .85rem; cursor: pointer; background: var(--bg-2); color: var(--text); }
.langs-tabs .tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.lang-panel { display: none; }
.lang-panel.active { display: block; }
.draft-lang { font-size: .82rem; color: var(--muted); margin-bottom: 6px; }

.empty-row td { text-align: center; padding: 34px; color: var(--muted); }

/* ---------- Misc ---------- */
.flash { padding: 12px 18px; border-radius: 10px; margin-bottom: 18px; font-weight: 600; font-size: .9rem; }
.flash.ok { background: color-mix(in srgb, var(--accent-3) 14%, transparent); color: var(--accent-3); border: 1px solid color-mix(in srgb, var(--accent-3) 40%, transparent); }
.flash.err { background: color-mix(in srgb, var(--danger) 14%, transparent); color: var(--danger); border: 1px solid color-mix(in srgb, var(--danger) 40%, transparent); }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .header-inner { gap: 10px; }
  .site-header.has-menu .menu-toggle { display: grid; }
  .site-header.has-menu .nav {
    display: none;
    order: 3;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding: 6px 0;
    border-top: 1px solid var(--border);
  }
  .site-header.has-menu .nav.open { display: flex; }
  .site-header.has-menu .nav a { padding: 12px; border-radius: 10px; }
  .site-header.has-menu .nav a.active { background: color-mix(in srgb, var(--accent) 12%, transparent); }
  .footer-grid { grid-template-columns: 1fr; }
  .admin-head { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 520px) {
  .grid { grid-template-columns: 1fr; }
  .header-tools { margin-left: 0; }
  .hero { padding: 30px 0 24px; }
  .post { padding: 20px; }
}
@media print {
  .site-header, .site-footer, .header-tools { display: none !important; }
  body { background: #fff; color: #000; }
  .post { box-shadow: none; border: none; }
}