/* ZeroSite default theme — consumes CSS variables from site.css. Zero JS. */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--zs-font-body);
  font-size: var(--zs-font-size-base);
  line-height: 1.75;
  color: var(--zs-color-text);
  background: var(--zs-color-background);
  word-break: thai;
  overflow-wrap: break-word;
}

img, video { max-width: 100%; height: auto; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--zs-font-heading);
  line-height: 1.35;
  color: var(--zs-color-secondary);
  margin: 1.5em 0 0.5em;
}
h1 { font-size: 2.25rem; margin-top: 0.5em; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.3rem; }
h4 { font-size: 1.1rem; }

a { color: var(--zs-color-primary); }
a:hover { opacity: 0.85; }

.zs-container {
  max-width: var(--zs-container-max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------- Header ---------- */
.zs-header {
  border-bottom: 1px solid color-mix(in srgb, var(--zs-color-muted) 25%, transparent);
  background: var(--zs-color-background);
}
.zs-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
  position: relative;
}
.zs-logo { display: inline-flex; align-items: center; text-decoration: none; }
.zs-logo-text {
  font-family: var(--zs-font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--zs-color-secondary);
}
.zs-nav-list {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}
.zs-nav-list a {
  text-decoration: none;
  color: var(--zs-color-text);
  font-weight: 500;
}
.zs-nav-list a:hover { color: var(--zs-color-primary); }

/* centered header variant */
.zs-header-centered .zs-header-inner {
  flex-direction: column;
  padding: 0.75rem 0;
}

/* mobile nav (no JS — checkbox toggle) */
.zs-nav-toggle { display: none; }
.zs-nav-burger { display: none; cursor: pointer; padding: 0.5rem; }
.zs-nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px 0;
  background: var(--zs-color-secondary);
}
@media (max-width: 720px) {
  .zs-nav-burger { display: block; }
  .zs-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--zs-color-background);
    border-bottom: 1px solid color-mix(in srgb, var(--zs-color-muted) 25%, transparent);
    padding: 1rem 1.25rem;
    z-index: 50;
  }
  .zs-nav-toggle:checked ~ .zs-nav { display: block; }
  .zs-nav-list { flex-direction: column; gap: 0.75rem; }
  .zs-header-centered .zs-header-inner { flex-direction: row; }
}

/* ---------- Content ---------- */
main { min-height: 60vh; padding: 2rem 0 4rem; }

.zs-article { max-width: 46rem; margin: 0 auto; }
.zs-width-wide .zs-article { max-width: 56rem; }

.zs-content p { margin: 0 0 1.1em; }
.zs-content ul, .zs-content ol { padding-left: 1.5rem; margin: 0 0 1.1em; }
.zs-content blockquote {
  margin: 1.5em 0;
  padding: 0.5em 1.25em;
  border-left: 4px solid var(--zs-color-primary);
  background: var(--zs-color-surface);
  border-radius: 0 var(--zs-radius) var(--zs-radius) 0;
}
.zs-content pre {
  background: var(--zs-color-secondary);
  color: #f1f5f9;
  padding: 1rem 1.25rem;
  border-radius: var(--zs-radius);
  overflow-x: auto;
  font-size: 0.9em;
}
.zs-content code { font-family: ui-monospace, monospace; }
.zs-content p code {
  background: var(--zs-color-surface);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

.zs-figure { margin: 1.75em 0; }
.zs-figure img, .zs-figure video {
  border-radius: var(--zs-radius);
  display: block;
  margin: 0 auto;
}
.zs-figure figcaption {
  text-align: center;
  font-size: 0.875rem;
  color: var(--zs-color-muted);
  margin-top: 0.5rem;
}

.zs-table-wrap { overflow-x: auto; margin: 1.5em 0; }
.zs-table-wrap table { border-collapse: collapse; width: 100%; }
.zs-table-wrap th, .zs-table-wrap td {
  border: 1px solid color-mix(in srgb, var(--zs-color-muted) 30%, transparent);
  padding: 0.5rem 0.75rem;
  text-align: left;
}
.zs-table-wrap th { background: var(--zs-color-surface); }

/* ---------- FAQ ---------- */
.zs-faq {
  border: 1px solid color-mix(in srgb, var(--zs-color-muted) 30%, transparent);
  border-radius: var(--zs-radius);
  margin: 0.75em 0;
  background: var(--zs-color-surface);
}
.zs-faq summary {
  cursor: pointer;
  padding: 0.85em 1.1em;
  font-weight: 600;
  font-family: var(--zs-font-heading);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.zs-faq summary::-webkit-details-marker { display: none; }
.zs-faq summary::after {
  content: "+";
  font-size: 1.25em;
  line-height: 1;
  color: var(--zs-color-primary);
  transition: transform 150ms ease;
}
.zs-faq[open] summary::after { transform: rotate(45deg); }
.zs-faq-answer {
  padding: 0 1.1em 0.95em;
  color: var(--zs-color-text);
}

/* ---------- CTA ---------- */
.zs-cta { margin: 1.75em 0; }
.zs-cta-center { text-align: center; }
.zs-cta-left { text-align: left; }
.zs-cta-right { text-align: right; }

/* ---------- Embed (click-to-play poster, no third-party JS) ---------- */
.zs-embed-link {
  position: relative;
  display: block;
  border-radius: var(--zs-radius);
  overflow: hidden;
}
.zs-embed-link img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
}
.zs-embed-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: #fff;
  background: rgb(0 0 0 / 0.35);
  transition: background 150ms ease;
}
.zs-embed-link:hover .zs-embed-play { background: rgb(0 0 0 / 0.5); }
.zs-embed-fallback { word-break: break-all; }

/* ---------- Breadcrumbs ---------- */
.zs-breadcrumbs { font-size: 0.875rem; margin-bottom: 1rem; }
.zs-breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  color: var(--zs-color-muted);
}
.zs-breadcrumbs li + li::before { content: "›"; margin: 0 0.4rem; }
.zs-breadcrumbs a { color: var(--zs-color-muted); text-decoration: none; }
.zs-breadcrumbs a:hover { color: var(--zs-color-primary); }

/* ---------- Posts ---------- */
.zs-post-meta { color: var(--zs-color-muted); font-size: 0.9rem; }
.zs-cover img { width: 100%; }

.zs-list-header { text-align: center; margin-bottom: 2.5rem; }
.zs-post-grid { display: grid; gap: 1.5rem; }
.zs-postlist-cards .zs-post-grid {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.zs-post-card {
  background: var(--zs-color-surface);
  border-radius: var(--zs-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.zs-postlist-list .zs-post-card { flex-direction: row; gap: 1rem; }
.zs-post-card-img img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
}
.zs-postlist-list .zs-post-card-img { flex: 0 0 220px; }
.zs-post-card-body { padding: 1.25rem; }
.zs-post-card h2 { margin: 0 0 0.5rem; font-size: 1.15rem; }
.zs-post-card h2 a { color: var(--zs-color-secondary); text-decoration: none; }
.zs-post-card h2 a:hover { color: var(--zs-color-primary); }
.zs-post-card p { margin: 0 0 0.5rem; font-size: 0.925rem; }

.zs-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 3rem;
  color: var(--zs-color-muted);
}
.zs-pagination a { text-decoration: none; font-weight: 500; }

/* ---------- Buttons ---------- */
.zs-btn {
  display: inline-block;
  background: var(--zs-color-primary);
  color: #fff;
  padding: 0.65rem 1.5rem;
  border-radius: var(--zs-radius);
  text-decoration: none;
  font-weight: 600;
}
.zs-btn:hover { opacity: 0.9; }

/* ---------- Footer ---------- */
.zs-footer {
  border-top: 1px solid color-mix(in srgb, var(--zs-color-muted) 25%, transparent);
  background: var(--zs-color-surface);
  padding: 2.5rem 0;
  margin-top: 2rem;
}
.zs-footer-inner { display: grid; gap: 1.5rem; }
.zs-footer .zs-nav-list {
  display: grid;
  grid-template-columns: repeat(var(--zs-footer-columns), 1fr);
  gap: 0.5rem 2rem;
}
.zs-footer .zs-nav-list a { font-weight: 400; font-size: 0.925rem; }
.zs-copyright { color: var(--zs-color-muted); font-size: 0.875rem; margin: 0; }

/* ---------- 404 ---------- */
.zs-404 { text-align: center; padding: 4rem 0; }
.zs-404 h1 { font-size: 5rem; margin: 0; }