/* ═══════════════════════════════════════════════════════════
   EMPYREAL BLOG — Shared Design System
   Mirrors the React app's CSS custom properties exactly
═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=DM+Sans:wght@300;400;500;600&family=DM+Mono:wght@400;500&display=swap');

/* ── Variables ─────────────────────────────────────────── */
:root {
  --cream:        #F6F6F2;
  --cream-soft:   #F1F1EC;
  --cream-dark:   #EEEAE0;
  --cream-teal:   #EAF7F4;
  --dark:         #001A15;
  --dark-mid:     #002E22;
  --dark-card:    #003B2C;
  --ink:          #180F06;
  --ink-80:       rgba(24,15,6,0.80);
  --ink-60:       rgba(24,15,6,0.60);
  --ink-40:       rgba(24,15,6,0.40);
  --ink-20:       rgba(24,15,6,0.20);
  --ink-10:       rgba(24,15,6,0.10);
  --ink-06:       rgba(24,15,6,0.06);
  --teal:         #00857D;
  --teal-deep:    #006B65;
  --teal-bright:  #3CEAC7;
  --teal-light:   #A8F0E3;
  --teal-glow:    rgba(60,234,199,0.15);
  --rhubarb:      #D94060;
  --white:        #FFFFFF;

  --shadow-sm: 0 1px 3px rgba(0,26,21,0.07);
  --shadow-md: 0 4px 16px rgba(0,26,21,0.10), 0 1px 4px rgba(0,26,21,0.06);
  --shadow-lg: 0 16px 48px rgba(0,26,21,0.12), 0 4px 12px rgba(0,26,21,0.08);
  --shadow-teal: 0 8px 32px rgba(0,133,125,0.25);

  --font-display: 'Plus Jakarta Sans', 'DM Sans', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'DM Mono', ui-monospace, monospace;

  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);

  --r-sm:   8px;
  --r-md:   13px;
  --r-lg:   21px;
  --r-xl:   34px;
  --r-full: 999px;

  --nav-h: 68px;
}

/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--cream);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Reading Progress Bar ──────────────────────────────── */
#read-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: var(--teal);
  z-index: 9999;
  transition: width 0.08s linear;
  pointer-events: none;
}

/* ── Navigation ────────────────────────────────────────── */
.blog-nav {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(246,246,242,0.85);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid rgba(24,15,6,0.08);
  height: var(--nav-h);
  transition: background 0.4s, box-shadow 0.4s;
}
.blog-nav.scrolled { background: var(--cream); box-shadow: var(--shadow-sm); }
.blog-nav-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.blog-nav-logo {
  display: flex;
  align-items: center;
  color: var(--ink);
  text-decoration: none;
  flex-shrink: 0;
}
.blog-nav-logo svg {
  height: 26px;
  width: auto;
  display: block;
  color: var(--ink);
  transition: opacity 0.2s;
}
.blog-nav-logo:hover svg { opacity: 0.75; }
.blog-nav-links {
  display: flex;
  align-items: center;
  gap: 0.125rem;
}
.blog-nav-links a {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: rgba(24,15,6,0.80);
  padding: 0.45rem 0.9rem;
  border-radius: var(--r-full);
  transition: color 0.25s, background 0.25s;
  text-decoration: none;
}
.blog-nav-links a:hover { color: var(--ink); background: rgba(24,15,6,0.06); }
.blog-nav-links a.active { color: var(--ink); background: rgba(24,15,6,0.06); font-weight: 600; }
.blog-nav-cta {
  background: var(--dark) !important;
  color: var(--teal-bright) !important;
  padding: 0.5rem 1.25rem !important;
  border-radius: var(--r-full) !important;
  font-weight: 600 !important;
  margin-left: 0.5rem !important;
  font-size: 14px !important;
  transition: all 0.3s !important;
}
.blog-nav-cta:hover {
  background: var(--teal) !important;
  color: #fff !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-teal);
}
.blog-nav-resources { color: var(--teal) !important; font-weight: 600 !important; }
.blog-nav-resources:hover { background: rgba(0,133,125,0.08) !important; color: var(--teal-deep) !important; }

/* Mobile toggle */
.blog-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--r-sm);
  transition: background 0.2s;
}
.blog-nav-toggle:hover { background: rgba(24,15,6,0.06); }
.blog-nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
}
.blog-nav-toggle span:nth-child(2) { width: 16px; }

/* Mobile menu */
.blog-mobile-menu {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--dark);
  z-index: 200;
  padding: 0 2rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
  visibility: hidden;
  opacity: 0;
  transform: translateX(100%);
  transition: transform 0.38s cubic-bezier(0.16,1,0.3,1), opacity 0.32s cubic-bezier(0.16,1,0.3,1), visibility 0s linear 0.38s;
  pointer-events: none;
}
.blog-mobile-menu.open {
  visibility: visible;
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
  transition: transform 0.38s cubic-bezier(0.16,1,0.3,1), opacity 0.32s cubic-bezier(0.16,1,0.3,1), visibility 0s linear 0s;
}
.blog-mobile-menu a {
  color: var(--cream);
  text-decoration: none;
  font-size: 26px;
  font-weight: 700;
  font-family: var(--font-display);
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  transition: color 0.2s, padding-left 0.2s;
  letter-spacing: -0.3px;
}
.blog-mobile-menu a:last-child { color: var(--teal-bright); border-bottom: none; margin-top: 1rem; }
.blog-mobile-menu a:hover { color: var(--teal-bright); padding-left: 0.5rem; }
.blog-close-btn {
  position: sticky; top: 0; align-self: flex-end;
  margin: 1.25rem 0 1.5rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--r-full);
  color: var(--cream);
  cursor: pointer;
  width: 38px; height: 38px;
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s;
  flex-shrink: 0;
}
.blog-close-btn:hover { background: rgba(255,255,255,0.12); }

@media (max-width: 768px) {
  .blog-nav-links { display: none; }
  .blog-nav-toggle { display: flex; }
}

/* ── Container ─────────────────────────────────────────── */
.container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 2rem;
}
.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Label / Tag pill ──────────────────────────────────── */
.label {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border-radius: var(--r-full);
  background: var(--teal-glow);
  color: var(--teal);
  border: 1px solid rgba(0,133,125,0.2);
}
.label-dark {
  background: rgba(60,234,199,0.12);
  color: var(--teal-bright);
  border-color: rgba(60,234,199,0.2);
}
.label-rhubarb {
  background: rgba(217,64,96,0.10);
  color: var(--rhubarb);
  border-color: rgba(217,64,96,0.2);
}

/* ── Post Card ─────────────────────────────────────────── */
.post-card {
  background: var(--white);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--ink-06);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.post-card-img {
  aspect-ratio: 16/9;
  background: var(--dark-card);
  position: relative;
  overflow: hidden;
}
.post-card-img-inner {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  opacity: 0.4;
}
.post-card-img .label { position: absolute; top: 1rem; left: 1rem; }
.post-card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; gap: 0.75rem; }
.post-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--ink-60);
}
.post-card-meta span { display: flex; align-items: center; gap: 0.3rem; }
.post-card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.post-card-title a:hover { color: var(--teal); }
.post-card-excerpt {
  font-size: 0.9rem;
  color: var(--ink-60);
  line-height: 1.6;
  flex: 1;
}
.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--ink-06);
  font-size: 0.8rem;
}
.author-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-80);
}
.author-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--dark);
  flex-shrink: 0;
}
.read-link {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--teal);
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 0.2s;
}
.read-link:hover { gap: 0.6rem; }

/* ── Category Tag ──────────────────────────────────────── */
.cat-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: var(--r-full);
  border: 1.5px solid var(--ink-10);
  color: var(--ink-80);
  background: transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
  text-decoration: none;
}
.cat-tag:hover, .cat-tag.active {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--cream);
  transform: translateY(-1px);
}

/* ── Section headings ──────────────────────────────────── */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.75rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--ink);
}
.section-sub {
  font-size: 1rem;
  color: var(--ink-60);
  line-height: 1.7;
  max-width: 520px;
}

/* ── Buttons ───────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--teal);
  color: var(--cream);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--r-full);
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}
.btn-primary:hover { background: var(--teal-deep); transform: translateY(-2px); box-shadow: var(--shadow-teal); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--r-full);
  border: 1.5px solid var(--ink-20);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
}
.btn-outline:hover { border-color: var(--teal); color: var(--teal); background: var(--teal-glow); transform: translateY(-2px); }

.btn-ghost-dark {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--teal-bright);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--r-full);
  border: 1.5px solid rgba(60,234,199,0.35);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}
.btn-ghost-dark:hover { background: rgba(60,234,199,0.1); border-color: var(--teal-bright); transform: translateY(-2px); }

/* ── Footer ────────────────────────────────────────────── */
.blog-footer {
  background: var(--dark);
  color: rgba(246,246,242,0.45);
  padding: 4rem 0 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.blog-footer-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 2rem 3rem;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: 2.618rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.blog-footer-logo-link {
  display: flex;
  color: var(--cream);
  text-decoration: none;
}
.blog-footer-logo-link svg {
  height: 22px;
  width: auto;
  display: block;
  color: var(--cream);
  transition: opacity 0.2s;
}
.blog-footer-logo-link:hover svg { opacity: 0.75; }
.blog-footer-brand p {
  font-size: 14px;
  color: rgba(246,246,242,0.4);
  font-weight: 400;
  line-height: 1.65;
  margin-top: 12px;
  max-width: 260px;
}
.blog-footer-connect {
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.blog-footer-connect h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: rgba(246,246,242,0.35);
  margin-bottom: 1.25rem;
}
.blog-footer-connect a {
  display: block;
  font-size: 14px;
  color: rgba(246,246,242,0.5);
  text-decoration: none;
  padding: 3px 0;
  transition: color 0.2s ease;
  font-weight: 400;
}
.blog-footer-connect a:hover { color: var(--teal-bright); }
.blog-footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: rgba(246,246,242,0.35);
  margin-bottom: 1.25rem;
}
.blog-footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(246,246,242,0.5);
  text-decoration: none;
  padding: 3px 0;
  transition: color 0.2s ease;
  font-weight: 400;
}
.blog-footer-col a:hover { color: var(--teal-bright); }
.blog-footer-bottom {
  max-width: 1320px;
  margin: 0 auto;
  padding: 1.75rem 2rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  font-family: var(--font-mono);
  color: rgba(246,246,246,0.28);
  font-weight: 500;
}

/* ── Pagination ────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2rem 0;
}
.page-btn {
  width: 40px; height: 40px;
  border-radius: var(--r-sm);
  border: 1.5px solid var(--ink-10);
  background: transparent;
  color: var(--ink-80);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.page-btn:hover, .page-btn.active { background: var(--teal); border-color: var(--teal); color: var(--cream); }
.page-btn.arrow { font-size: 1rem; }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 900px) {
  .blog-footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .container, .container-narrow { padding: 0 1.25rem; }
  .blog-footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .blog-footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}