/* ══════════════════════════════════════
   RESET & BASE  (mirrors main site)
   ══════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: var(--leading-tight);
  color: var(--color-primary);
}

h1 { font-size: var(--text-4xl); font-weight: var(--weight-bold); letter-spacing: var(--tracking-tighter); }
h2 { font-size: var(--text-3xl); font-weight: var(--weight-bold); }
h3 { font-size: var(--text-2xl); font-weight: var(--weight-semibold); }
h4 { font-size: var(--text-xl); font-weight: var(--weight-semibold); }

p { max-width: var(--measure); margin-bottom: var(--space-5); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--duration-normal) var(--ease-default);
}
a:hover { color: var(--color-link-hover); }
a:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 3px;
  border-radius: 2px;
}

img { display: block; max-width: 100%; height: auto; }

/* ── Section label ── */
.section-label {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary-600);
  margin-bottom: var(--space-3);
  display: block;
}

/* ── Gold rule ── */
.gold-rule {
  width: 48px;
  height: 2px;
  background: var(--color-accent);
  border: none;
  margin: var(--space-6) 0;
}
.gold-rule--center { margin-left: auto; margin-right: auto; }


/* ══════════════════════════════════════
   LAYOUT
   ══════════════════════════════════════ */
.container {
  max-width: var(--width-container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 3vw, 3rem);
}

.container--narrow {
  max-width: var(--width-content);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 3vw, 3rem);
}


/* ══════════════════════════════════════
   NAVIGATION
   ══════════════════════════════════════ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-dropdown);
  background: var(--nav-bg);
  backdrop-filter: blur(var(--nav-blur));
  -webkit-backdrop-filter: blur(var(--nav-blur));
  border-bottom: 1px solid var(--color-border-light);
}

.site-nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.nav-name {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.nav-name:hover { text-decoration: none; color: var(--color-primary-hover); }

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}

.nav-links a {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  transition: color var(--duration-normal), background-color var(--duration-normal);
}
.nav-links a:hover {
  color: var(--color-primary);
  background: var(--color-surface-alt);
  text-decoration: none;
}
.nav-links a.active {
  color: var(--color-primary);
  font-weight: var(--weight-semibold);
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-primary);
}
.nav-toggle svg { width: 24px; height: 24px; }


/* ══════════════════════════════════════
   FOOTER
   ══════════════════════════════════════ */
.site-footer {
  background: var(--color-neutral-900);
  color: rgba(255,255,255,0.6);
  padding: var(--space-xl) 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-inner p {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  margin: 0;
}

.footer-links {
  display: flex;
  list-style: none;
  gap: var(--space-6);
}
.footer-links a {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: color var(--duration-normal);
}
.footer-links a:hover { color: var(--color-accent); text-decoration: none; }

.footer-disclaimer {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: rgba(255,255,255,0.4);
  margin: 1.5rem 0 0;
  line-height: 1.5;
}


/* ══════════════════════════════════════
   BLOG-SPECIFIC STYLES
   ══════════════════════════════════════ */

/* ── Page header ── */
.page-header {
  padding: clamp(3rem, 6vw, 5rem) 0 clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--color-border-light);
}

.page-header h1 { margin-bottom: var(--space-2); }

.page-header p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

/* ── Post list ── */
.post-list {
  list-style: none;
  padding: clamp(2rem, 4vw, 3rem) 0;
}

.post-list__item {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border-light);
}
.post-list__item:first-child { padding-top: 0; }
.post-list__item:last-child { border-bottom: none; }

.post-list__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.post-list__title a {
  color: var(--color-primary);
  text-decoration: none;
}
.post-list__title a:hover { color: var(--color-primary-hover); }

.post-list__meta {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.post-list__excerpt {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  max-width: var(--measure);
}

.post-list__read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-link);
  margin-top: var(--space-3);
}
.post-list__read-more:hover { color: var(--color-link-hover); }
.post-list__read-more svg {
  width: 16px;
  height: 16px;
  transition: transform var(--duration-normal) var(--ease-default);
}
.post-list__read-more:hover svg { transform: translateX(3px); }

/* ── Tags ── */
.tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: clamp(0.7rem, 0.65rem + 0.15vw, 0.78rem);
  font-weight: var(--weight-medium);
  color: var(--color-primary-700);
  background: var(--color-primary-50);
  padding: 0.15em 0.6em;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background var(--duration-normal), color var(--duration-normal);
  line-height: 1.6;
}
.tag:hover {
  background: var(--color-primary-100);
  color: var(--color-primary-800);
  text-decoration: none;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ── Single post article ── */
.post-article { padding: clamp(2rem, 4vw, 3rem) 0 clamp(3rem, 5vw, 5rem); }
.post-article__header { margin-bottom: var(--space-xl); }

.post-article__title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.post-article__meta {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.post-article__body { max-width: var(--measure-wide); }

.post-article__body h2 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-4);
}
.post-article__body h3 {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-3);
}

.post-article__body p { margin-bottom: var(--space-5); }

.post-article__body blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-6);
  margin: var(--space-lg) 0;
  color: var(--color-text-muted);
  font-style: italic;
}

.post-article__body ul,
.post-article__body ol {
  max-width: var(--measure);
  margin-bottom: var(--space-5);
  padding-left: var(--space-6);
}

.post-article__body li { margin-bottom: var(--space-2); }

.post-article__body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-surface-alt);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
}

.post-article__body pre {
  background: var(--color-neutral-900);
  color: var(--color-neutral-100);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin: var(--space-lg) 0;
}
.post-article__body pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.post-article__body img {
  border-radius: var(--radius-lg);
  margin: var(--space-lg) 0;
}

.post-article__body a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ── Disclaimer ── */
.post-disclaimer {
  margin-top: var(--space-xl);
  padding: var(--space-5) var(--space-6);
  background: var(--color-surface-alt);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  max-width: var(--measure-wide);
}

.post-disclaimer strong {
  color: var(--color-primary);
  font-weight: var(--weight-semibold);
}

/* ── Post navigation (prev/next) ── */
.post-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-lg);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-border-light);
  margin-top: var(--space-xl);
}

.post-nav a {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.post-nav__label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: var(--space-1);
}

/* ── Tags page ── */
.tags-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding: var(--space-lg) 0;
}

.tags-grid .tag {
  font-size: var(--text-sm);
  padding: 0.35em 0.9em;
}

/* ── Back link ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}
.back-link:hover { color: var(--color-primary); }
.back-link svg { width: 16px; height: 16px; }


/* ══════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════ */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--space-4);
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.75rem 1rem; }

  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }

  .post-nav { flex-direction: column; }
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  z-index: var(--z-sticky);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-decoration: none;
}
.skip-link:focus { top: 0; outline: 2px solid var(--color-focus-ring); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* Print */
@media print {
  .site-nav, .nav-toggle, .site-footer { display: none; }
}