/* ──────────────────────────────────────────────────────────────
   The Microsetting Academy: shared content-page stylesheet
   Used by /microsetting/, /fishtail-setting/, /castle-setting/,
   /pave-setting/, /graver-sharpening/, /become-a-diamond-setter/.
   index.html keeps its own inline styles.
   ────────────────────────────────────────────────────────────── */

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

:root {
  --accent: #3AAF88;
  --accent-light: #52C49E;
  --accent-dim: rgba(58,175,136,0.12);
  --accent-border: rgba(58,175,136,0.3);
  --bg: #080808;
  --bg2: #111111;
  --bg3: #191919;
  --border: rgba(255,255,255,0.07);
  --text: #e8e6e1;
  --muted: #888580;
  --white: #ffffff;
  --font: 'DM Sans', 'Avenir', 'Avenir Next', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-light); text-decoration: underline; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 28px; }
.container--narrow { max-width: 760px; margin: 0 auto; padding: 0 28px; }

/* ── Nav ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 32px;
  background: rgba(8,8,8,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav__logo { font-size: 18px; font-weight: 700; color: var(--white); letter-spacing: 0.02em; }
.nav__logo span { color: var(--accent); }
.nav__menu { display: flex; gap: 24px; align-items: center; }
.nav__menu a { font-size: 14px; color: var(--text); font-weight: 500; }
.nav__menu a:hover { color: var(--accent); text-decoration: none; }
.nav__cta {
  background: var(--accent); color: #080808 !important;
  padding: 10px 22px; font-weight: 700; font-size: 13px;
  letter-spacing: 0.06em; text-transform: uppercase;
  transition: background 0.2s;
}
.nav__cta:hover { background: var(--accent-light); text-decoration: none; }
@media (max-width: 760px) {
  .nav__menu a:not(.nav__cta) { display: none; }
}

/* ── Buttons ── */
.btn {
  display: inline-block;
  background: var(--accent); color: #080808;
  font-family: var(--font); font-weight: 700;
  font-size: 15px; letter-spacing: 0.08em; text-transform: uppercase;
  text-decoration: none; padding: 18px 44px;
  border: none; cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}
.btn:hover { background: var(--accent-light); transform: translateY(-1px); text-decoration: none; }
.btn--outline { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn--outline:hover { background: var(--accent-dim); }
.btn--large { font-size: 16px; padding: 22px 56px; }
.btn--dark { background: #080808; color: var(--accent); }
.btn--dark:hover { background: #1a1a1a; }

/* ── Hero ── */
.page-hero {
  padding: 160px 0 80px;
  background:
    radial-gradient(ellipse at top, rgba(58,175,136,0.06), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}
.page-hero__eyebrow {
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 24px;
}
.page-hero h1 {
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 700; line-height: 1.15;
  color: var(--white); margin-bottom: 24px;
  letter-spacing: -0.01em;
}
.page-hero__sub {
  font-size: 19px; color: var(--muted); max-width: 680px;
  margin-bottom: 36px; line-height: 1.6;
}
.page-hero__byline {
  font-size: 13px; color: var(--muted);
  letter-spacing: 0.1em; text-transform: uppercase;
}
.page-hero__byline strong { color: var(--accent); font-weight: 600; }

/* ── Article body ── */
.prose {
  padding: 64px 0 96px;
}
.prose h2 {
  font-size: clamp(24px, 3vw, 34px);
  color: var(--white);
  margin: 64px 0 20px;
  line-height: 1.25;
  letter-spacing: -0.005em;
}
.prose h2:first-child { margin-top: 0; }
.prose h3 {
  font-size: 21px; color: var(--white);
  margin: 40px 0 14px;
}
.prose p { margin-bottom: 18px; color: var(--text); }
.prose ul, .prose ol { margin: 0 0 22px 24px; }
.prose li { margin-bottom: 10px; color: var(--text); }
.prose strong { color: var(--white); font-weight: 600; }
.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: 8px 24px;
  margin: 28px 0;
  font-style: italic;
  color: var(--text);
  background: rgba(58,175,136,0.04);
}
.prose .callout {
  background: rgba(58,175,136,0.06);
  border: 1px solid var(--accent-border);
  padding: 24px 28px;
  margin: 32px 0;
  border-radius: 4px;
}
.prose .callout p:last-child { margin-bottom: 0; }
.prose .callout-label {
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--accent); font-weight: 700; margin-bottom: 10px;
}

/* ── CTA card ── */
.cta-card {
  background: linear-gradient(135deg, rgba(58,175,136,0.08), rgba(58,175,136,0.02));
  border: 1px solid var(--accent-border);
  padding: 48px 40px;
  margin: 48px 0;
  text-align: center;
  border-radius: 6px;
}
.cta-card__label {
  font-size: 11px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--accent);
  font-weight: 700; margin-bottom: 16px;
}
.cta-card h3 {
  font-size: clamp(22px, 2.5vw, 28px);
  color: var(--white); margin-bottom: 14px;
  line-height: 1.3;
}
.cta-card p {
  color: var(--muted); margin-bottom: 28px;
  max-width: 520px; margin-left: auto; margin-right: auto;
}

/* ── Related techniques ── */
.related {
  background: var(--bg2);
  padding: 80px 0;
  border-top: 1px solid var(--border);
}
.related__label {
  font-size: 11px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--accent);
  font-weight: 600; margin-bottom: 16px; text-align: center;
}
.related h2 {
  text-align: center; font-size: 28px; color: var(--white);
  margin-bottom: 48px;
}
.related__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.related__card {
  display: block;
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 28px 24px;
  border-radius: 4px;
  transition: border-color 0.2s, transform 0.15s;
  text-decoration: none;
  color: var(--text);
}
.related__card:hover {
  border-color: var(--accent-border);
  transform: translateY(-2px);
  text-decoration: none;
}
.related__card h3 {
  color: var(--white); font-size: 18px;
  margin-bottom: 8px;
}
.related__card p { color: var(--muted); font-size: 14px; margin: 0; }

/* ── Footer ── */
.footer {
  background: var(--bg);
  padding: 64px 28px 48px;
  text-align: center;
  border-top: 1px solid var(--border);
}
.footer__logo {
  font-size: 18px; font-weight: 700; color: var(--white);
  margin-bottom: 16px;
}
.footer__logo span { color: var(--accent); }
.footer__copy { font-size: 13px; color: var(--muted); margin-bottom: 16px; }
.footer__links { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }
.footer__links a { font-size: 13px; color: var(--muted); }
.footer__links a:hover { color: var(--accent); text-decoration: none; }

/* ── Breadcrumbs ── */
.breadcrumbs {
  font-size: 13px; color: var(--muted);
  letter-spacing: 0.04em; margin-bottom: 28px;
}
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--accent); text-decoration: none; }
.breadcrumbs__sep { margin: 0 10px; color: rgba(255,255,255,0.2); }

/* ── Tables ── */
.prose table {
  width: 100%; border-collapse: collapse;
  margin: 24px 0; font-size: 15px;
}
.prose th, .prose td {
  padding: 14px 16px; text-align: left;
  border-bottom: 1px solid var(--border);
}
.prose th {
  color: var(--accent); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  font-size: 11px;
}
.prose td { color: var(--text); }