/* =====================================================================
   YouGotThis — Blog styles (refresh)
   Depends on /tokens.css for variables, Geist/Newsreader webfonts, and the
   base html/body type. Load order in each page: tokens.css, then blog.css.
   Design-system rules: Paper bg, white cards, Ink headings, Signal links,
   Ink primary button, 10px radii, link-underline hovers (no translateY),
   no accent left-stripes, sentence case.
   ===================================================================== */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--ygt-slate-600);
  background: var(--ygt-paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { color: var(--ygt-ink-900); line-height: var(--lh-snug); }
a { text-decoration: none; color: inherit; }

/* ---------- Header (matches index.html) ---------- */
.header {
  background: rgba(247, 245, 240, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
}
.header .container {
  max-width: 1100px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; height: 80px;
}
.mk-wordmark {
  font-family: var(--font-sans); font-weight: 700; font-size: 36px;
  letter-spacing: -0.025em; color: var(--ygt-ink-900);
  line-height: 1; display: inline-flex; align-items: baseline;
}
.mk-wordmark-dot { color: var(--ygt-signal-600); }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-link { font-size: 0.95rem; font-weight: 600; color: var(--ygt-ink-900); }
.nav-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.nav-link[aria-current="page"] { color: var(--ygt-signal-600); }
.nav-cta {
  font-family: var(--font-sans); font-size: 14px; font-weight: 500;
  padding: 12px 20px; border-radius: var(--radius-md);
  background: var(--ygt-ink-900); color: var(--fg-on-dark);
  border: 1px solid transparent; cursor: pointer;
  transition: background var(--dur-base) var(--ease-out);
}
.nav-cta:hover { background: var(--ygt-ink-800); }
.nav-cta:focus-visible { outline: none; box-shadow: var(--shadow-focus); }

/* ---------- Shared byline link ---------- */
.byline-link { color: var(--ygt-ink-900); font-weight: 600; }
.byline-link:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Blog listing ---------- */
.blog-header { max-width: 720px; margin: 0 auto; padding: 64px 28px 32px; }
.blog-header h1 {
  font-size: var(--fs-3xl); font-weight: 600; letter-spacing: var(--tracking-tight);
  margin-bottom: 12px; text-wrap: balance;
}
.blog-header p { font-size: 1.125rem; color: var(--ygt-slate-600); line-height: 1.6; }

.blog-list {
  max-width: 720px; margin: 0 auto; padding: 0 28px 64px;
  display: flex; flex-direction: column; gap: 16px;
}
.blog-card {
  display: block; border-radius: var(--radius-md); border: 1px solid var(--border);
  padding: 28px; background: var(--ygt-white);
  transition: border-color var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.blog-card:hover { border-color: var(--ygt-signal-600); box-shadow: var(--shadow-md); }
.blog-card-meta { font-size: 0.8rem; font-weight: 500; color: var(--fg-subtle); margin-bottom: 10px; }
.blog-card h2 {
  font-size: var(--fs-lg); font-weight: 600; margin-bottom: 10px; line-height: var(--lh-snug);
}
.blog-card p { font-size: 0.9rem; color: var(--ygt-slate-600); line-height: 1.65; }
.blog-card-link {
  display: inline-block; margin-top: 14px; font-size: 0.85rem; font-weight: 600;
  color: var(--ygt-signal-600);
}
.blog-card:hover .blog-card-link { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Article ---------- */
.article-wrapper { max-width: 680px; margin: 0 auto; padding: 56px 28px 72px; }
.article-back {
  display: inline-block; font-size: 0.85rem; font-weight: 600;
  color: var(--ygt-signal-600); margin-bottom: 32px;
}
.article-back:hover { text-decoration: underline; text-underline-offset: 3px; }
.article-tag {
  display: inline-block; font-size: 0.7rem; font-weight: 600;
  color: var(--ygt-signal-700); background: var(--ygt-signal-100);
  padding: 4px 12px; border-radius: var(--radius-pill); margin-bottom: 16px;
}
.article-meta { font-size: 0.8rem; font-weight: 500; color: var(--fg-subtle); margin-bottom: 16px; }
.article-disclaimer {
  font-size: 0.8rem; font-style: italic; color: var(--fg-subtle);
  margin-bottom: 28px; padding: 12px 16px; background: var(--ygt-paper-2);
  border: 1px solid var(--border); border-radius: var(--radius-md);
}
.article-wrapper h1 {
  font-size: clamp(2rem, 4.5vw, var(--fs-3xl)); font-weight: 600;
  letter-spacing: var(--tracking-tight); margin-bottom: 20px; line-height: var(--lh-tight);
  text-wrap: balance;
}
.article-wrapper h2 {
  font-size: var(--fs-xl); font-weight: 600; letter-spacing: var(--tracking-tight);
  margin-top: 40px; margin-bottom: 16px;
}
.article-wrapper h3 { font-size: var(--fs-lg); font-weight: 600; margin-top: 32px; margin-bottom: 12px; }
.article-dek { font-size: var(--fs-md); color: var(--ygt-slate-600); line-height: 1.65; margin-bottom: 28px; }
.article-hero { width: 100%; border-radius: var(--radius-lg); margin-bottom: 32px; }
.article-wrapper p { font-size: 1.0625rem; color: var(--ygt-slate-700); line-height: 1.8; margin-bottom: 24px; }
.article-wrapper ul,
.article-wrapper ol { margin-bottom: 24px; padding-left: 28px; }
.article-wrapper li { font-size: 1.0625rem; color: var(--ygt-slate-700); line-height: 1.8; margin-bottom: 8px; }
.article-wrapper strong { color: var(--ygt-ink-900); font-weight: 600; }

/* ---------- Tables (article-table, priority-table, or bare) ---------- */
.article-wrapper table,
.article-table,
.priority-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 28px;
  font-size: 0.92rem;
}
.article-wrapper th,
.article-table th,
.priority-table th {
  text-align: left;
  padding: 11px 14px;
  font-weight: 600;
  color: var(--ygt-ink-900);
  background: var(--ygt-slate-100);
  border-bottom: 1px solid var(--border-strong);
}
.article-wrapper td,
.article-table td,
.priority-table td {
  padding: 11px 14px;
  color: var(--ygt-slate-700);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.article-wrapper tbody tr:nth-child(even),
.article-table tbody tr:nth-child(even),
.priority-table tbody tr:nth-child(even) {
  background: var(--ygt-paper-2);
}
/* numeric columns: right-aligned; data cells in tabular mono */
.article-wrapper th.num,
.article-wrapper td.num,
.article-table th.num,
.article-table td.num,
.priority-table th.num,
.priority-table td.num { text-align: right; }
.article-wrapper td.num,
.article-table td.num,
.priority-table td.num {
  font-family: var(--font-mono);
  font-feature-settings: "tnum" on, "lnum" on, "zero" on;
  white-space: nowrap;
}

/* Highlight callout — full border + tint, NO accent left-stripe (design-system rule) */
.highlight-box {
  padding: 20px 24px; border-radius: var(--radius-md);
  border: 1px solid var(--border); background: var(--ygt-signal-050); margin-bottom: 24px;
}
.highlight-box p { margin-bottom: 12px; font-size: 0.95rem; }
.highlight-box p:last-child { margin-bottom: 0; }

.article-cta {
  margin-top: 40px; padding: 28px; border-radius: var(--radius-lg);
  background: var(--ygt-white); border: 1px solid var(--border); text-align: center;
}
.article-cta p { font-size: 0.95rem; color: var(--ygt-slate-600); margin-bottom: 18px; }
.article-link { color: var(--ygt-signal-600); font-weight: 500; }
.article-link:hover { text-decoration: underline; text-underline-offset: 3px; }

.related-reading { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); }
.related-reading h3 {
  font-size: var(--fs-eyebrow); font-weight: 600; margin-bottom: 12px;
  text-transform: uppercase; letter-spacing: var(--tracking-eyebrow); color: var(--fg-subtle);
}
.related-reading ul { list-style: none; padding-left: 0; }
.related-reading li { margin-bottom: 8px; }

.author-bio {
  margin-top: 40px; padding: 20px 24px; border-radius: var(--radius-md);
  border: 1px solid var(--border); background: var(--ygt-signal-050);
  font-size: 0.9rem; color: var(--ygt-slate-700); line-height: 1.7;
}
.author-bio a { color: var(--ygt-signal-600); font-weight: 600; }
.author-bio a:hover { text-decoration: underline; text-underline-offset: 3px; }

.btn-primary {
  display: inline-block; font-family: var(--font-sans); font-size: 15px; font-weight: 500;
  padding: 16px 28px; border-radius: var(--radius-md);
  background: var(--ygt-ink-900); color: var(--fg-on-dark);
  border: 1px solid transparent; cursor: pointer;
  transition: background var(--dur-base) var(--ease-out);
}
.btn-primary:hover { background: var(--ygt-ink-800); }
.btn-primary:focus-visible { outline: none; box-shadow: var(--shadow-focus); }

/* ---------- Footer (sitewide refresh footer) ---------- */
.footer { background: var(--ygt-white); border-top: 1px solid var(--border); }
.footer .container {
  max-width: 1100px; margin: 0 auto; padding: 32px 24px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px;
}
.footer-nav { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.footer-link { font-size: 0.9rem; color: var(--ygt-signal-600); font-weight: 500; }
.footer-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.footer-copy { font-size: 0.85rem; color: var(--fg-subtle); }
.footer-links { display: contents; }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .nav-links { gap: 16px; }
  .blog-header { padding: 48px 28px 24px; }
  .blog-header h1 { font-size: var(--fs-2xl); }
  .article-wrapper h1 { font-size: 1.65rem; }
  .article-wrapper th, .article-table th, .priority-table th,
  .article-wrapper td, .article-table td, .priority-table td { padding: 8px 10px; }
  .article-wrapper table, .article-table, .priority-table { font-size: 0.82rem; }
  .footer .container { flex-direction: column; text-align: center; }
}

/* ---------- Mobile header: hamburger menu (≤640px) ---------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  margin: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 0 auto;
  background: var(--ygt-ink-900);
  border-radius: 2px;
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-toggle:focus-visible { outline: none; box-shadow: var(--shadow-focus); border-radius: var(--radius-md); }

@media (max-width: 640px) {
  .header .container { height: 64px; position: relative; }
  .header .mk-wordmark { font-size: 26px; }
  .header .nav-toggle { display: inline-flex; }
  .header .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--ygt-paper);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    padding: 6px 0;
    margin: 0;
    display: none;
  }
  .header .nav-links.is-open { display: flex; }
  .header .nav-links > a { padding: 13px 24px; }
  .header .nav-links .nav-link { font-size: 1rem; }
  .header .nav-links .nav-cta { width: 100%; }
  .footer-nav { flex-direction: column; gap: 14px; }
  .footer-links { display: flex; gap: 18px; justify-content: center; }
  .footer-links .footer-link { color: var(--ygt-signal-600); }
}