/* =====================================================
   DonePDF Blog — public pages (index + article)
   Uses the site's theme tokens from tools-header.css so
   light / dark / dark-contrast themes work automatically.
===================================================== */
.dpb {
  --dpb-surface: var(--surface, #fff);
  --dpb-surface-2: var(--surface-2, #f7f8fb);
  --dpb-border: var(--border-soft, #e5e8f0);
  --dpb-strong: var(--text-strong, #171a23);
  --dpb-body: var(--text-body, #454a58);
  --dpb-muted: var(--text-muted, #7a7f8e);
  --dpb-brand: var(--primary-color, #00008B);
  --dpb-accent: var(--secondary-color, #04AA6D);
  --dpb-radius: var(--radius-md, 14px);
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 16px 64px;
  color: var(--dpb-body);
}
.dpb a { color: inherit; }
.dpb *, .dpb *::before, .dpb *::after { box-sizing: border-box; }

/* Breadcrumb */
.dpb-crumbs { font-size: 14px; color: var(--dpb-muted); margin-bottom: 18px; display: flex; flex-wrap: wrap; gap: 6px; }
.dpb-crumbs a { text-decoration: none; }
.dpb-crumbs a:hover { color: var(--dpb-brand); text-decoration: underline; }
.dpb-crumbs [aria-current] { color: var(--dpb-strong); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 60ch; }

/* Index header */
.dpb-hero { padding: 8px 0 22px; border-bottom: 1px solid var(--dpb-border); margin-bottom: 24px; }
.dpb-hero h1 { font-size: clamp(28px, 4vw, 40px); line-height: 1.15; color: var(--dpb-strong); margin: 0 0 8px; letter-spacing: -0.01em; }
.dpb-hero p { margin: 0; font-size: 17px; color: var(--dpb-muted); max-width: 62ch; }

/* Category chips */
.dpb-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 26px; padding: 0; list-style: none; }
.dpb-chips a { display: inline-block; padding: 7px 14px; border: 1px solid var(--dpb-border); border-radius: 999px; font-size: 14px; text-decoration: none; background: var(--dpb-surface); }
.dpb-chips a:hover { border-color: var(--dpb-brand); }
.dpb-chips a[aria-current="page"] { background: var(--dpb-brand); border-color: var(--dpb-brand); color: #fff; }
.dpb-chips small { opacity: .7; margin-inline-start: 4px; }

/* Grid of cards */
.dpb-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 22px; }
.dpb-card { display: flex; flex-direction: column; background: var(--dpb-surface); border: 1px solid var(--dpb-border); border-radius: var(--dpb-radius); overflow: hidden; transition: transform .18s ease, box-shadow .18s ease; }
.dpb-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md, 0 6px 16px rgba(20,24,40,.08)); }
.dpb-card__img { display: block; aspect-ratio: 16 / 9; background: var(--dpb-surface-2); overflow: hidden; }
.dpb-card__img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.dpb-card__ph { width: 100%; height: 100%; display: grid; place-items: center; font-size: 34px; color: var(--dpb-brand); opacity: .55;
  background: linear-gradient(135deg, color-mix(in srgb, var(--dpb-brand) 10%, transparent), color-mix(in srgb, var(--dpb-accent) 12%, transparent)); }
.dpb-card__body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.dpb-card__cat { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--dpb-accent); text-decoration: none; }
.dpb-card h2 { font-size: 19px; line-height: 1.35; margin: 0; color: var(--dpb-strong); }
.dpb-card h2 a { text-decoration: none; }
.dpb-card h2 a:hover { color: var(--dpb-brand); }
.dpb-card p { margin: 0; line-height: 1.65; font-size: 15px; }
.dpb-card__meta { margin-top: auto; font-size: 13px; color: var(--dpb-muted); display: flex; gap: 12px; }

/* Featured (first card on page 1) */
@media (min-width: 900px) {
  .dpb-grid--featured .dpb-card:first-child { grid-column: 1 / -1; flex-direction: row; }
  .dpb-grid--featured .dpb-card:first-child .dpb-card__img { flex: 0 0 55%; aspect-ratio: auto; min-height: 300px; }
  .dpb-grid--featured .dpb-card:first-child .dpb-card__body { padding: 32px; justify-content: center; }
  .dpb-grid--featured .dpb-card:first-child h2 { font-size: 28px; }
  .dpb-grid--featured .dpb-card:first-child p { font-size: 16px; }
}

/* Empty state */
.dpb-empty { padding: 48px 20px; text-align: center; border: 1px dashed var(--dpb-border); border-radius: var(--dpb-radius); background: var(--dpb-surface-2); }
.dpb-empty a { color: var(--dpb-brand); font-weight: 600; }

/* Pagination */
.dpb-pager { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-top: 36px; }
.dpb-pager a, .dpb-pager span { min-width: 40px; padding: 8px 12px; text-align: center; border: 1px solid var(--dpb-border); border-radius: 10px; text-decoration: none; background: var(--dpb-surface); }
.dpb-pager a:hover { border-color: var(--dpb-brand); }
.dpb-pager [aria-current] { background: var(--dpb-brand); border-color: var(--dpb-brand); color: #fff; }

/* ===================== Article ===================== */
.dpb-article-head { max-width: 780px; margin: 0 auto 26px; }
.dpb-article-head h1 { font-size: clamp(28px, 4.2vw, 42px); line-height: 1.18; color: var(--dpb-strong); margin: 10px 0 14px; letter-spacing: -0.015em; }
.dpb-lead { font-size: 18px; line-height: 1.6; color: var(--dpb-muted); margin: 0 0 16px; }
.dpb-meta { display: flex; flex-wrap: wrap; gap: 14px; font-size: 14px; color: var(--dpb-muted); }
.dpb-cover { max-width: 1000px; margin: 0 auto 34px; border-radius: var(--dpb-radius); overflow: hidden; background: var(--dpb-surface-2); }
.dpb-cover img { width: 100%; height: auto; display: block; }

.dpb-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 40px; max-width: 1080px; margin: 0 auto; }
@media (min-width: 1000px) { .dpb-layout--toc { grid-template-columns: minmax(0, 760px) 260px; justify-content: center; } }

.dpb-toc { order: -1; border: 1px solid var(--dpb-border); border-radius: var(--dpb-radius); padding: 16px 18px; background: var(--dpb-surface-2); font-size: 14px; }
@media (min-width: 1000px) { .dpb-toc { order: 0; position: sticky; top: 90px; align-self: start; max-height: calc(100vh - 110px); overflow: auto; } }
.dpb-toc strong { display: block; color: var(--dpb-strong); margin-bottom: 8px; }
.dpb-toc ol { margin: 0; padding-inline-start: 18px; display: grid; gap: 6px; }
.dpb-toc a { text-decoration: none; line-height: 1.4; }
.dpb-toc a:hover { color: var(--dpb-brand); }

.dpb-content { font-size: 17.5px; line-height: 1.8; color: var(--dpb-body); overflow-wrap: anywhere; }
.dpb-content h2 { font-size: 27px; line-height: 1.3; color: var(--dpb-strong); margin: 1.8em 0 .6em; scroll-margin-top: 90px; }
.dpb-content h3 { font-size: 21px; line-height: 1.35; color: var(--dpb-strong); margin: 1.5em 0 .5em; }
.dpb-content p, .dpb-content ul, .dpb-content ol { margin: 0 0 1.1em; }
.dpb-content li { margin: .3em 0; }
.dpb-content a { color: var(--dpb-brand); text-decoration: underline; text-underline-offset: 2px; }
.dpb-content img { max-width: 100%; height: auto; border-radius: 10px; }
.dpb-content blockquote { margin: 1.4em 0; padding: 12px 20px; border-inline-start: 4px solid var(--dpb-accent); background: var(--dpb-surface-2); border-radius: 6px; }
.dpb-content pre, .dpb-content code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; }
.dpb-content pre { padding: 14px; overflow: auto; background: var(--dpb-surface-2); border-radius: 10px; }
.dpb-content table { width: 100%; border-collapse: collapse; margin: 1.2em 0; font-size: 15.5px; display: block; overflow-x: auto; }
.dpb-content th, .dpb-content td { border: 1px solid var(--dpb-border); padding: 10px 12px; text-align: start; }
.dpb-content th { background: var(--dpb-surface-2); color: var(--dpb-strong); }

/* FAQ */
.dpb-faq { margin-top: 44px; }
.dpb-faq h2 { font-size: 26px; color: var(--dpb-strong); margin: 0 0 14px; }
.dpb-faq details { border: 1px solid var(--dpb-border); border-radius: 12px; background: var(--dpb-surface); margin-bottom: 10px; }
.dpb-faq summary { cursor: pointer; padding: 15px 18px; font-weight: 600; color: var(--dpb-strong); list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.dpb-faq summary::-webkit-details-marker { display: none; }
.dpb-faq summary::after { content: "+"; font-size: 20px; line-height: 1; color: var(--dpb-muted); }
.dpb-faq details[open] summary::after { content: "–"; }
.dpb-faq .dpb-faq__a { padding: 0 18px 16px; line-height: 1.7; }

/* Tool CTA */
.dpb-cta { margin: 40px 0 0; padding: 22px 24px; border-radius: var(--dpb-radius); color: #fff; background: var(--brand-grad, linear-gradient(135deg, #00008B, #04AA6D));
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; }
.dpb-cta strong { font-size: 18px; }
.dpb-cta a { background: #fff; color: #111; padding: 10px 18px; border-radius: 10px; font-weight: 700; text-decoration: none; }

/* Languages */
.dpb-langs { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--dpb-border); font-size: 14px; }
.dpb-langs ul { list-style: none; padding: 0; margin: 8px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.dpb-langs a { display: inline-block; padding: 5px 11px; border-radius: 999px; border: 1px solid var(--dpb-border); text-decoration: none; }
.dpb-langs a[aria-current] { border-color: var(--dpb-brand); color: var(--dpb-brand); font-weight: 600; }

/* Related */
.dpb-related { max-width: 1080px; margin: 56px auto 0; }
.dpb-related > h2 { font-size: 24px; color: var(--dpb-strong); margin: 0 0 16px; }
.dpb-related .dpb-grid { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.dpb-related .dpb-card h2 { font-size: 16px; }

.dpb-notice { max-width: 780px; margin: 0 auto 20px; padding: 10px 14px; border-radius: 10px; background: #fff7e6; color: #7a4b00; border: 1px solid #ffd591; font-size: 14px; }

@media (max-width: 640px) {
  .dpb { padding-top: 18px; }
  .dpb-content { font-size: 16.5px; }
  .dpb-content h2 { font-size: 23px; }
}