/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }
ul, ol { padding-left: 1.25rem; }

/* ── Utilities ── */
.hidden { display: none !important; }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.small { font-size: 0.8125rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ── Layout ── */
.site-container { max-width: 1280px; margin: 0 auto; padding: 0 1rem; }
.site-layout { display: grid; grid-template-columns: 1fr; gap: 1.5rem; padding: 1.5rem 0; }
.site-layout--post { display: grid; grid-template-columns: 1fr; gap: 1.5rem; padding: 1.5rem 0; }

@media (min-width: 992px) {
  .site-layout { grid-template-columns: 1fr 320px; }
  .site-layout--post { grid-template-columns: 220px 1fr; }
}

/* ── Navbar ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0.5rem 0;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.navbar-brand {
  font-family: var(--font-brand, var(--font-body));
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.navbar-brand:hover { text-decoration: none; color: var(--color-primary); }
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: 0.25rem;
}
.navbar-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.navbar-links {
  display: flex;
  gap: 1rem;
}
.navbar-links a {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  white-space: nowrap;
}
.navbar-links a:hover { color: var(--color-primary); text-decoration: none; }
.navbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ── Mobile Nav ── */
@media (max-width: 767px) {
  .navbar-toggle { display: block; }
  .navbar-menu {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
    gap: 1rem;
    z-index: 99;
  }
  .navbar-menu.open { display: flex; }
  .navbar-links { flex-direction: column; gap: 0.5rem; }
}

/* ── Icon ── */
.icon { width: 16px; height: 16px; vertical-align: -0.125em; flex-shrink: 0; }
.icon-lg .icon, .icon-lg { width: 20px; height: 20px; }
.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 0.375rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 0.35rem;
  transition: color 0.15s, border-color 0.15s;
}
.btn-icon:hover { color: var(--color-primary); border-color: var(--color-primary); }

/* ── Language Switch ── */
.lang-switch { display: flex; gap: 0; }
.lang-btn {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  text-decoration: none;
}
.lang-btn:first-child { border-radius: 0.25rem 0 0 0.25rem; }
.lang-btn:last-child { border-radius: 0 0.25rem 0.25rem 0; border-left: none; }
.lang-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.lang-btn:hover { text-decoration: none; }

/* ── Card ── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  overflow: hidden;
}
.card-header {
  padding: 0.75rem 1rem;
  font-weight: 600;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}
.card-body { padding: 1rem; }
.card-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

/* ── Post Card ── */
.post-card { margin-bottom: 1rem; }
.post-card .card-body { display: flex; flex-direction: column; gap: 0.5rem; }
.post-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}
.post-card-title a { color: var(--color-text); }
.post-card-title a:hover { color: var(--color-primary); text-decoration: none; }
.post-card-teaser {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.5;
}
.post-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.post-card-meta .icon { width: 14px; height: 14px; }
.post-card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.25rem;
}

/* ── Tag Pills ── */
.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 99px;
  text-decoration: none;
  line-height: 1.4;
}
.tag-pill:hover { opacity: 0.85; text-decoration: none; }

/* Tag color palette — 12 colors, assigned via server-side hashCode % 12 or CSS classes */
.tag-blue { background: rgba(37,99,235,0.12); color: #2563eb; }
.tag-green { background: rgba(22,163,74,0.12); color: #16a34a; }
.tag-amber { background: rgba(217,119,6,0.12); color: #d97706; }
.tag-red { background: rgba(220,38,38,0.12); color: #dc2626; }
.tag-purple { background: rgba(147,51,234,0.12); color: #9333ea; }
.tag-cyan { background: rgba(6,182,212,0.12); color: #0891b2; }
.tag-pink { background: rgba(219,39,119,0.12); color: #db2777; }
.tag-orange { background: rgba(234,88,12,0.12); color: #ea580c; }
.tag-teal { background: rgba(13,148,136,0.12); color: #0d9488; }
.tag-indigo { background: rgba(79,70,229,0.12); color: #4f46e5; }
.tag-lime { background: rgba(101,163,13,0.12); color: #65a30d; }
.tag-rose { background: rgba(225,29,72,0.12); color: #e11d48; }

[data-theme=dark] .tag-blue { background: rgba(96,165,250,0.15); color: #60a5fa; }
[data-theme=dark] .tag-green { background: rgba(74,222,128,0.15); color: #4ade80; }
[data-theme=dark] .tag-amber { background: rgba(251,191,36,0.15); color: #fbbf24; }
[data-theme=dark] .tag-red { background: rgba(248,113,113,0.15); color: #f87171; }
[data-theme=dark] .tag-purple { background: rgba(192,132,252,0.15); color: #c084fc; }
[data-theme=dark] .tag-cyan { background: rgba(34,211,238,0.15); color: #22d3ee; }
[data-theme=dark] .tag-pink { background: rgba(244,114,182,0.15); color: #f472b6; }
[data-theme=dark] .tag-orange { background: rgba(251,146,60,0.15); color: #fb923c; }
[data-theme=dark] .tag-teal { background: rgba(45,212,191,0.15); color: #2dd4bf; }
[data-theme=dark] .tag-indigo { background: rgba(129,140,248,0.15); color: #818cf8; }
[data-theme=dark] .tag-lime { background: rgba(163,230,53,0.15); color: #a3e635; }
[data-theme=dark] .tag-rose { background: rgba(251,113,133,0.15); color: #fb7185; }

/* ── Category Badge ── */
.category-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 0.25rem;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.category-badge:hover { opacity: 0.85; text-decoration: none; color: #fff; }

/* ── Sidebar Widget ── */
.sidebar { display: flex; flex-direction: column; gap: 1rem; }
.sidebar-widget { composes: card; }
.sidebar-widget .widget-header {
  padding: 0.75rem 1rem;
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.sidebar-widget .widget-body { padding: 0.75rem 1rem; }
.widget-list { list-style: none; padding: 0; margin: 0; }
.widget-list li { padding: 0; }
.widget-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.35rem 0;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
}
.widget-list li:last-child a { border-bottom: none; }
.widget-list a:hover { color: var(--color-primary); text-decoration: none; }
.widget-count {
  font-size: 0.75rem;
  background: var(--color-border);
  color: var(--color-text-muted);
  padding: 0.1rem 0.4rem;
  border-radius: 99px;
  font-weight: 600;
}

/* ── Tag Cloud ── */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 0.35rem; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: 0.375rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover { opacity: 0.9; color: #fff; }
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}
.btn-secondary:hover { color: var(--color-primary); border-color: var(--color-primary); }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.75rem; }

/* ── Pagination ── */
.pagination {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-item { display: flex; }
.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: 0.25rem;
  text-decoration: none;
  min-width: 2rem;
  text-align: center;
}
.page-link:hover { color: var(--color-primary); border-color: var(--color-primary); text-decoration: none; }
.page-item.disabled .page-link { opacity: 0.4; pointer-events: none; }
.page-item.active .page-link { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.page-info {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding: 0.25rem 0.5rem;
}

/* ── List Header ── */
.list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.list-header h2 {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

/* ── Post Meta Sidebar (single post) ── */
.post-meta-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.meta-item {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}
.meta-item .icon { margin-top: 0.15rem; color: var(--color-text-muted); }
.meta-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
  margin-bottom: 0.15rem;
}

/* ── Mobile: Post meta as horizontal bar ── */
@media (max-width: 991px) {
  .post-meta-sidebar {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
  }
}

/* ── Article Content ── */
.article-content { line-height: 1.7; }
.article-content h1 { font-size: 1.75rem; font-weight: 600; margin: 1.5rem 0 0.75rem; }
.article-content h2 { font-size: 1.375rem; font-weight: 600; margin: 1.5rem 0 0.75rem; }
.article-content h3 { font-size: 1.125rem; font-weight: 600; margin: 1.25rem 0 0.5rem; }
.article-content p { margin-bottom: 1rem; }
.article-content ul, .article-content ol { margin-bottom: 1rem; }
.article-content table { width: 100%; margin-bottom: 1rem; border-collapse: collapse; }
.article-content table th,
.article-content table td { padding: 0.5rem 0.75rem; border: 1px solid var(--color-border); }
.article-content table thead th { background: var(--color-code-bg, var(--color-surface)); font-weight: 600; border-bottom-width: 2px; }
.article-content table tbody tr:nth-child(even) { background: var(--color-code-bg, var(--color-surface)); }
.article-content img { max-width: 100%; height: auto; border-radius: 0.375rem; }
.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 0.5rem 1rem;
  margin: 1rem 0;
  background: var(--color-code-bg, var(--color-surface));
  border-radius: 0 0.375rem 0.375rem 0;
  color: var(--color-text-secondary);
}
.article-content hr { margin: 1.5rem 0; border: none; border-top: 1px solid var(--color-border); }
.article-content a { color: var(--color-primary); text-decoration: underline; }
.article-content a:hover { opacity: 0.8; }

/* ── Alert ── */
.alert {
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}
.alert-info {
  background: rgba(37,99,235,0.08);
  border: 1px solid rgba(37,99,235,0.2);
  color: var(--color-primary);
}
.alert-warning {
  background: rgba(217,119,6,0.08);
  border: 1px solid rgba(217,119,6,0.2);
  color: #d97706;
}
.alert-danger {
  background: rgba(220,38,38,0.08);
  border: 1px solid rgba(220,38,38,0.2);
  color: #dc2626;
}
[data-theme=dark] .alert-info { background: rgba(96,165,250,0.1); border-color: rgba(96,165,250,0.2); color: #60a5fa; }
[data-theme=dark] .alert-warning { background: rgba(251,191,36,0.1); border-color: rgba(251,191,36,0.2); color: #fbbf24; }
[data-theme=dark] .alert-danger { background: rgba(248,113,113,0.1); border-color: rgba(248,113,113,0.2); color: #f87171; }

/* ── Error Page ── */
.error-card { max-width: 600px; margin: 3rem auto; }
.error-header-warning { background: rgba(217,119,6,0.1); color: #d97706; }
.error-header-danger { background: rgba(220,38,38,0.1); color: #dc2626; }
[data-theme=dark] .error-header-warning { background: rgba(251,191,36,0.1); color: #fbbf24; }
[data-theme=dark] .error-header-danger { background: rgba(248,113,113,0.1); color: #f87171; }

/* ── Search Form ── */
.search-form { display: flex; gap: 0; }
.search-input {
  flex: 1;
  padding: 0.375rem 0.625rem;
  font-size: 0.8125rem;
  border: 1px solid var(--color-border);
  border-radius: 0.25rem 0 0 0.25rem;
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
}
.search-input:focus { border-color: var(--color-primary); }
.search-input::placeholder { color: var(--color-text-muted); }
.search-btn {
  padding: 0.375rem 0.5rem;
  border: 1px solid var(--color-border);
  border-left: none;
  border-radius: 0 0.25rem 0.25rem 0;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
}
.search-btn:hover { color: var(--color-primary); }

/* ── Original Link ── */
.original-link {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* ── Footer ── */
.site-footer {
  padding: 2rem 0;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  margin-top: 2rem;
}

/* ── Query/Filter Page ── */
.query-title {
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text);
}
.filter-active {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.125rem 0.5rem;
  font-size: 0.75rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: 99px;
}

/* ── Page Template ── */
.page-content { max-width: 800px; margin: 0 auto; padding: 1.5rem 0; }

/* ── Responsive ── */
@media (max-width: 991px) {
  .site-layout { grid-template-columns: 1fr; }
  .site-layout--post { grid-template-columns: 1fr; }
}
@media (max-width: 767px) {
  .list-header { flex-direction: column; gap: 0.75rem; align-items: flex-start; }
  .site-container { padding: 0 0.75rem; }
}