/* ScrollBreak — standalone black & white premium identity */

:root {
  --sb-bg: #000000;
  --sb-bg-elev: #0a0a0a;
  --sb-bg-card: #111111;
  --sb-line: #222222;
  --sb-line-soft: #1a1a1a;
  --sb-fg: #f5f5f5;
  --sb-muted: #8a8a8a;
  --sb-dim: #555555;
  --sb-accent: #ffffff;
  --sb-max: 720px;
  --sb-wide: 920px;
  --sb-radius: 2px;
  --sb-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --sb-mono: "SF Mono", ui-monospace, Menlo, monospace;
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.sb-page {
  margin: 0;
  background: var(--sb-bg);
  color: var(--sb-fg);
  font-family: var(--sb-font);
  font-size: 16px;
  line-height: 1.65;
}

a { color: var(--sb-fg); text-decoration: underline; text-underline-offset: 3px; }
a:hover { opacity: 0.75; }

.sb-wrap { max-width: var(--sb-wide); margin: 0 auto; padding: 0 28px; }
.sb-wrap--narrow { max-width: var(--sb-max); }

/* ── Header ─────────────────────────────────────────────────────── */

.sb-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--sb-line);
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(12px);
}

.sb-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
}

.sb-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--sb-fg);
}

.sb-brand:hover { opacity: 1; color: var(--sb-fg); }

.sb-brand__mark {
  font-size: 18px;
  letter-spacing: -0.03em;
  font-weight: 600;
}

.sb-brand__by {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sb-dim);
  text-decoration: none;
}

.sb-brand__by:hover { color: var(--sb-muted); opacity: 1; }

.sb-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.sb-nav a {
  text-decoration: none;
  color: var(--sb-muted);
}

.sb-nav a:hover { color: var(--sb-fg); opacity: 1; }

/* ── Hero ───────────────────────────────────────────────────────── */

.sb-hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--sb-line);
}

.sb-hero__grid {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 36px;
  align-items: start;
}

@media (max-width: 560px) {
  .sb-hero__grid { grid-template-columns: 1fr; gap: 24px; }
}

.sb-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  display: block;
  border: 1px solid var(--sb-line);
}

.sb-eyebrow {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sb-dim);
  margin-bottom: 14px;
}

.sb-hero h1 {
  margin: 0 0 12px;
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.sb-tagline {
  margin: 0 0 12px;
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--sb-muted);
  letter-spacing: -0.01em;
  max-width: 34ch;
}

.sb-former {
  margin: 0 0 20px;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sb-dim);
}

.sb-lead {
  margin: 0 0 20px;
  color: var(--sb-muted);
  max-width: 52ch;
  line-height: 1.6;
}

.sb-lead--note {
  font-size: 0.92rem;
  color: var(--sb-dim);
  margin-bottom: 32px;
}

.sb-lead--note a {
  color: var(--sb-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.sb-lead--note a:hover {
  color: var(--sb-fg);
}

.sb-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--sb-fg);
  color: var(--sb-bg);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--sb-fg);
  transition: background 0.15s ease, color 0.15s ease;
}

.sb-cta:hover {
  opacity: 1;
  background: transparent;
  color: var(--sb-fg);
}

.sb-cta--ghost {
  background: transparent;
  color: var(--sb-fg);
  border-color: var(--sb-line);
}

.sb-cta--ghost:hover {
  border-color: var(--sb-fg);
  background: transparent;
  color: var(--sb-fg);
}

.sb-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.sb-badge {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sb-muted);
  border: 1px solid var(--sb-line);
  padding: 5px 12px;
}

/* ── Sections ───────────────────────────────────────────────────── */

.sb-section {
  padding: 56px 0;
  border-bottom: 1px solid var(--sb-line);
}

.sb-section:last-of-type { border-bottom: none; }

.sb-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sb-dim);
  margin-bottom: 20px;
}

.sb-section h2 {
  margin: 0 0 16px;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.sb-section p {
  margin: 0 0 14px;
  color: var(--sb-muted);
  max-width: 58ch;
}

.sb-section p:last-child { margin-bottom: 0; }

/* ── Loop steps ─────────────────────────────────────────────────── */

.sb-loop {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 28px;
}

.sb-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-top: 1px solid var(--sb-line-soft);
}

.sb-step:last-child { padding-bottom: 0; }

.sb-step__num {
  font-family: var(--sb-mono);
  font-size: 12px;
  color: var(--sb-dim);
  padding-top: 4px;
}

.sb-step h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--sb-fg);
}

.sb-step p {
  margin: 0;
  font-size: 0.92rem;
}

/* ── Principles ─────────────────────────────────────────────────── */

.sb-principles {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--sb-line);
  border: 1px solid var(--sb-line);
}

.sb-principles li {
  background: var(--sb-bg);
  padding: 16px 20px;
  font-size: 0.92rem;
  color: var(--sb-muted);
}

.sb-principles strong { color: var(--sb-fg); font-weight: 600; }

/* ── Pricing ────────────────────────────────────────────────────── */

.sb-pricing {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 28px;
  background: var(--sb-line);
  border: 1px solid var(--sb-line);
}

@media (max-width: 680px) {
  .sb-pricing { grid-template-columns: 1fr; }
}

.sb-tier {
  background: var(--sb-bg);
  padding: 28px 24px;
}

.sb-tier--feat {
  background: var(--sb-bg-elev);
}

.sb-tier__name {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sb-dim);
  margin-bottom: 8px;
}

.sb-tier__price {
  display: block;
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--sb-fg);
  margin-bottom: 12px;
}

.sb-tier__unit {
  font-size: 0.55em;
  font-weight: 500;
  color: var(--sb-muted);
}

.sb-tier p {
  margin: 0;
  font-size: 0.88rem;
}

.sb-note {
  margin-top: 16px;
  font-size: 0.82rem;
  color: var(--sb-dim);
}

/* ── Prose (legal) ──────────────────────────────────────────────── */

.sb-prose { padding: 48px 0 80px; }

.sb-prose h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.sb-prose .sb-timestamp {
  margin: 0 0 32px;
  font-size: 0.85rem;
  color: var(--sb-dim);
}

.sb-prose h2 {
  margin: 40px 0 12px;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--sb-fg);
}

.sb-prose p, .sb-prose li {
  color: var(--sb-muted);
  max-width: 62ch;
}

.sb-prose ul {
  margin: 8px 0 16px;
  padding-left: 20px;
}

.sb-prose li { margin: 6px 0; }

.sb-back {
  display: inline-block;
  margin-bottom: 32px;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sb-dim);
  text-decoration: none;
}

.sb-back:hover { color: var(--sb-fg); opacity: 1; }

/* ── Footer ─────────────────────────────────────────────────────── */

.sb-footer {
  border-top: 1px solid var(--sb-line);
  padding: 32px 0 48px;
}

.sb-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.sb-footer__copy {
  font-size: 12px;
  color: var(--sb-dim);
  letter-spacing: 0.04em;
}

.sb-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sb-footer__nav a {
  text-decoration: none;
  color: var(--sb-muted);
}

.sb-footer__nav a:hover { color: var(--sb-fg); opacity: 1; }