@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&family=DM+Serif+Display:ital@0;1&display=swap');

:root {
  --ink: #1a1a18;
  --ink-soft: #4a4a46;
  --ink-muted: #8a8a84;
  --ink-faint: #d4d4ce;
  --paper: #fafaf7;
  --paper-warm: #f4f4ef;
  --paper-mid: #ebebе4;
  --accent: #1d6b4f;
  --accent-light: #e8f4ef;
  --accent-mid: #2d8a65;
  --accent-warm: #c47d2a;
  --accent-warm-light: #fdf3e3;
  --red: #b83232;
  --border: #e2e2da;
  --border-strong: #c8c8c0;
  --radius: 8px;
  --radius-lg: 14px;
  --max: 1140px;
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── NAVIGATION ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250,250,247,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}

.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.nav-logo .logo-mark {
  width: 32px;
  height: 32px;
  background: var(--ink);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 1rem;
  font-style: italic;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--ink-soft);
  transition: color 0.2s;
}

.nav-links a:hover, .nav-links a.active { color: var(--ink); }

.nav-cta {
  background: var(--ink);
  color: var(--paper) !important;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius);
  font-size: 0.88rem !important;
  font-weight: 500;
  transition: background 0.2s !important;
}

.nav-cta:hover { background: var(--accent) !important; color: var(--paper) !important; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover { background: var(--accent); }

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border-strong);
}
.btn-secondary:hover { border-color: var(--ink); background: var(--paper-warm); }

.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover { background: var(--accent-mid); }

/* ── SECTION UTILITY ── */
.section { padding: 5rem 2rem; }
.section-sm { padding: 3rem 2rem; }
.container { max-width: var(--max); margin: 0 auto; }

.section-label {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

h1, h2, h3 { letter-spacing: -0.02em; line-height: 1.2; }

.display {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.display em { font-style: italic; color: var(--accent); }

h2.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

h2.section-title em { font-style: italic; color: var(--accent); }

/* ── TAGS / BADGES ── */
.tag {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 500;
  background: var(--paper-warm);
  color: var(--ink-soft);
  border: 1px solid var(--border);
}

.tag-green {
  background: var(--accent-light);
  color: var(--accent);
  border-color: #b8dece;
}

.tag-warm {
  background: var(--accent-warm-light);
  color: var(--accent-warm);
  border-color: #e8d0a0;
}

/* ── CARDS ── */
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.card:hover {
  box-shadow: 0 4px 24px rgba(0,0,0,0.07);
  border-color: var(--border-strong);
}

/* ── DIVIDER ── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ── FOOTER ── */
footer {
  background: var(--ink);
  color: var(--paper);
  padding: 3rem 2rem;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 3rem;
}

footer h4 {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1rem;
}

footer ul { list-style: none; }
footer ul li { margin-bottom: 0.5rem; }
footer ul a { color: rgba(250,250,247,0.6); font-size: 0.9rem; transition: color 0.2s; }
footer ul a:hover { color: var(--paper); }

.footer-bottom {
  max-width: var(--max);
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(250,250,247,0.4);
}

/* ── CERT BADGES ── */
.cert-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.cert-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.cert-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ── BLOG POST PAGE ── */
.post-body {
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--ink);
}

.post-body h2 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  margin: 2.5rem 0 1rem;
  color: var(--ink);
}

.post-body h3 {
  font-size: 1.15rem;
  font-weight: 500;
  margin: 2rem 0 0.75rem;
  color: var(--ink);
}

.post-body p { margin-bottom: 1.4rem; }

.post-body ul, .post-body ol {
  margin: 0 0 1.4rem 1.5rem;
}

.post-body li { margin-bottom: 0.5rem; }

.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1.5rem;
  margin: 2rem 0;
  background: var(--accent-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--ink-soft);
}

.post-body strong { color: var(--ink); font-weight: 500; }

.post-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.post-meta .dot { opacity: 0.4; }

/* ── HERO STRIPE ── */
.hero-stripe {
  background: var(--ink);
  color: var(--paper);
  padding: 1rem 2rem;
  font-size: 0.82rem;
  text-align: center;
  letter-spacing: 0.04em;
}

.hero-stripe a { color: #8ecfb5; text-decoration: underline; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .section { padding: 3.5rem 1.25rem; }
}