/* Osmo legal pages — shared stylesheet
   Design system: white base, #A8D5E2 accent, Plus Jakarta Sans headings, Inter body.
   No stock imagery. No em dashes in content. */

:root {
  --ink:        #14181C;
  --ink-soft:   #4A5560;
  --ink-mute:   #7A8794;
  --rule:       #E6EAEE;
  --rule-soft:  #F1F4F7;
  --accent:     #A8D5E2;
  --accent-deep:#5B93A6;
  --wash:       #F7FAFB;
  --paper:      #FFFFFF;

  --measure: 41rem;
  --shell:   72rem;

  --step--1: clamp(0.82rem, 0.79rem + 0.13vw, 0.88rem);
  --step-0:  clamp(1rem, 0.96rem + 0.18vw, 1.075rem);
  --step-1:  clamp(1.18rem, 1.1rem + 0.36vw, 1.4rem);
  --step-2:  clamp(1.45rem, 1.3rem + 0.7vw, 1.9rem);
  --step-3:  clamp(2rem, 1.68rem + 1.5vw, 3rem);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: var(--step-0);
  line-height: 1.68;
  font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Masthead ---------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--rule-soft);
}

.masthead__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 1.0rem 1.5rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
}

.wordmark {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.16rem;
  letter-spacing: -0.022em;
  color: var(--ink);
  text-decoration: none;
}

.wordmark::after {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-left: 5px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: 0.28em;
}

.masthead__nav {
  display: flex;
  gap: 1.4rem;
  font-size: var(--step--1);
  letter-spacing: 0.012em;
}

.masthead__nav a {
  color: var(--ink-mute);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1.5px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.masthead__nav a:hover { color: var(--ink); border-bottom-color: var(--accent); }
.masthead__nav a[aria-current='page'] { color: var(--ink); border-bottom-color: var(--accent); }

/* ---------- Page frame ---------- */

.shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.doc-head {
  padding: 4.5rem 0 2.25rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 3rem;
}

.eyebrow {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0 0 0.9rem;
}

h1 {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-size: var(--step-3);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.032em;
  margin: 0 0 1.1rem;
  max-width: 20ch;
}

.dateline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-size: var(--step--1);
  color: var(--ink-mute);
  margin: 0;
}

.dateline span { white-space: nowrap; }

/* ---------- Two-column layout ---------- */

.layout {
  display: grid;
  grid-template-columns: 15rem minmax(0, 1fr);
  gap: 4rem;
  align-items: start;
  padding-bottom: 6rem;
}

@media (max-width: 62rem) {
  .layout { grid-template-columns: 1fr; gap: 2.5rem; }
}

.toc {
  position: sticky;
  top: 5.5rem;
  font-size: var(--step--1);
  line-height: 1.5;
  border-left: 1px solid var(--rule);
  padding-left: 1.25rem;
}

@media (max-width: 62rem) {
  .toc {
    position: static;
    border-left: 0;
    padding: 1.4rem 1.5rem;
    background: var(--wash);
    border-radius: 12px;
  }
}

.toc__label {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 0.9rem;
}

.toc ol { list-style: none; margin: 0; padding: 0; counter-reset: toc; }
.toc li { margin-bottom: 0.55rem; }

.toc a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 150ms ease;
}

.toc a:hover { color: var(--accent-deep); }

/* ---------- Prose ---------- */

.prose { max-width: var(--measure); }

.prose section { scroll-margin-top: 5.5rem; }

.prose h2 {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-size: var(--step-2);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.024em;
  margin: 3.5rem 0 1.1rem;
  padding-top: 2.25rem;
  border-top: 1px solid var(--rule-soft);
}

.prose section:first-of-type h2 { margin-top: 0; padding-top: 0; border-top: 0; }

.prose h3 {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-size: var(--step-1);
  font-weight: 600;
  letter-spacing: -0.016em;
  margin: 2.25rem 0 0.75rem;
}

.prose h4 {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-size: var(--step-0);
  font-weight: 600;
  letter-spacing: -0.008em;
  color: var(--ink-soft);
  margin: 1.75rem 0 0.5rem;
}

.prose p { margin: 0 0 1.1rem; color: var(--ink-soft); }
.prose p strong { color: var(--ink); font-weight: 600; }

.prose ul { margin: 0 0 1.4rem; padding: 0; list-style: none; }

.prose ul li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.6rem;
  color: var(--ink-soft);
}

.prose ul li::before {
  content: '';
  position: absolute;
  left: 0.15rem;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.prose ol { margin: 0 0 1.4rem; padding-left: 1.4rem; }
.prose ol li { margin-bottom: 0.6rem; color: var(--ink-soft); }

.prose a { color: var(--accent-deep); text-decoration: underline; text-underline-offset: 2px; }
.prose a:hover { color: var(--ink); }

/* Legal all-caps blocks (warranty disclaimer, liability, arbitration) */
.legalese {
  font-size: 0.9rem;
  line-height: 1.62;
  letter-spacing: 0.008em;
  color: var(--ink-soft);
  background: var(--wash);
  border-left: 2px solid var(--accent);
  border-radius: 0 10px 10px 0;
  padding: 1.35rem 1.5rem;
  margin: 0 0 1.4rem;
}

.legalese p:last-child, .legalese ul:last-child, .legalese ol:last-child { margin-bottom: 0; }

/* Emphasis callout for plain-language commitments */
.callout {
  background: var(--wash);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 1.4rem 1.6rem;
  margin: 0 0 1.5rem;
}

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

.contact-block {
  font-size: var(--step--1);
  line-height: 1.9;
  color: var(--ink-soft);
  margin: 0;
}

.contact-block strong { display: block; color: var(--ink); font-weight: 600; }

/* ---------- Footer ---------- */

.foot {
  border-top: 1px solid var(--rule);
  background: var(--wash);
}

.foot__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 2.75rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2.5rem;
  justify-content: space-between;
  align-items: center;
  font-size: var(--step--1);
  color: var(--ink-mute);
}

.foot__links { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.foot__links a { color: var(--ink-mute); text-decoration: none; transition: color 150ms ease; }
.foot__links a:hover { color: var(--ink); }
.foot p { margin: 0; }

/* ---------- Index cards ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1.25rem;
  padding-bottom: 5rem;
}

.card {
  display: block;
  padding: 1.75rem;
  border: 1px solid var(--rule);
  border-radius: 14px;
  text-decoration: none;
  color: inherit;
  background: var(--paper);
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px -18px rgba(20, 24, 28, 0.35);
}

.card h2 {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-size: var(--step-1);
  font-weight: 600;
  letter-spacing: -0.018em;
  margin: 0 0 0.5rem;
}

.card p { margin: 0; color: var(--ink-mute); font-size: var(--step--1); line-height: 1.6; }

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

@media print {
  .masthead, .toc, .foot__links { display: none; }
  body { font-size: 10.5pt; }
  .layout { display: block; }
  .prose { max-width: none; }
}