/* ============================================================
   trinityone.cc — shared styles for the Trinity One tool pages.
   Token block matches the Trinity One website draft (Sunday
   Quiet direction) so a brand-wave swap updates both together.
   No inline styles anywhere (strict CSP).
   ============================================================ */

/* 1. Design tokens ------------------------------------------------------- */
:root {
  --color-paper: #faf8f5;
  --color-surface: #ffffff;
  --color-ink: #23272c;
  --color-text: #2e3338;
  --color-muted: #5a6167;
  --color-accent: #1e5648;
  --color-accent-dark: #17463a;
  --color-border: #d9d3ca;
  --color-border-strong: #857f74;
  --color-focus: #23272c;

  --font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --size-body: 1.125rem;
  --leading-body: 1.65;
  --measure: 65ch;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;
  --radius: 10px;
  --wrap: 68rem;
}

/* 2. Base ---------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--size-body);
  line-height: var(--leading-body);
}

h1, h2, h3 {
  color: var(--color-ink);
  font-family: var(--font-heading);
  line-height: 1.25;
  margin: var(--space-6) 0 var(--space-3);
}

h1 { font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.6rem); margin-top: 0; }
h2 { font-size: clamp(1.4rem, 1.15rem + 1.2vw, 1.9rem); }
h3 { font-size: 1.15rem; }

p, ul, ol { margin: 0 0 var(--space-4); max-width: var(--measure); }

img { max-width: 100%; height: auto; display: block; }

strong { color: var(--color-ink); }

/* 3. Accessibility helpers ---------------------------------------------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--color-ink);
  color: #ffffff;
  padding: var(--space-3) var(--space-4);
  border-radius: 0 0 var(--radius) 0;
  text-decoration: none;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* 4. Layout primitives --------------------------------------------------- */
.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.section { padding: var(--space-8) 0; }
.section-alt { background: var(--color-surface); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }

.lede { font-size: 1.2rem; color: var(--color-muted); max-width: var(--measure); }

.small { font-size: 0.95rem; color: var(--color-muted); }

.tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 var(--space-2);
}

/* 5. Header --------------------------------------------------------------- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-ink);
  text-decoration: none;
}

.top-link {
  color: var(--color-ink);
  text-decoration: none;
  font-size: 0.95rem;
}
.top-link:hover { text-decoration: underline; }

/* 6. Buttons + links ------------------------------------------------------ */
a { color: var(--color-accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--color-accent-dark); }

.button {
  display: inline-block;
  background: var(--color-accent);
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
  padding: var(--space-3) var(--space-5);
  min-height: 44px;
  border-radius: var(--radius);
  border: 1px solid var(--color-accent);
}
.button:hover { background: var(--color-accent-dark); border-color: var(--color-accent-dark); color: #ffffff; }

.button-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}
.button-secondary:hover { background: var(--color-surface); color: var(--color-accent-dark); border-color: var(--color-accent-dark); }

.cta-row { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-5); align-items: center; }

/* 7. Product hero --------------------------------------------------------- */
.hero-product { padding: var(--space-8) 0 var(--space-7); }

.hero-product h1 {
  font-size: clamp(1.9rem, 1.15rem + 3.2vw, 2.9rem);
  max-width: 26ch;
  margin: 0 0 var(--space-4);
}

.hero-product .lede { font-size: 1.25rem; }

/* 8. Split layouts + screenshots ------------------------------------------ */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-7);
  align-items: center;
  margin-top: var(--space-5);
}

.shot {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  overflow: hidden;
  box-shadow: 0 24px 48px -30px rgba(35, 39, 44, 0.35);
}

.shot img { width: 100%; }

.shot--phone { max-width: 23rem; margin: 0 auto; }

.shot--wide { margin-top: var(--space-5); }

.caption { font-size: 0.95rem; color: var(--color-muted); margin-top: var(--space-3); max-width: var(--measure); }

.product-mark {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  margin-bottom: var(--space-4);
}

/* 9. Feature groups -------------------------------------------------------- */
.groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: var(--space-6);
  margin: var(--space-5) 0 0;
}

.group h3 { margin: 0 0 var(--space-2); font-size: 1.05rem; }
.group ul { margin: 0; padding-left: 1.15rem; }
.group li { margin-bottom: var(--space-1); }

.status-note {
  border-left: 3px solid var(--color-border-strong);
  padding-left: var(--space-4);
  color: var(--color-muted);
  max-width: var(--measure);
  margin-top: var(--space-5);
}

/* 10. CTA band ------------------------------------------------------------- */
.cta-band h2 { margin-top: 0; }
.cta-band p { margin-bottom: var(--space-3); }
.cta-band .button { margin-top: var(--space-2); }

/* 11. Hub (product index) -------------------------------------------------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr));
  gap: var(--space-5);
  margin: var(--space-6) 0 0;
}

.product-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-5);
  text-decoration: none;
  color: inherit;
}
.product-card:hover { border-color: var(--color-accent); }
.product-card h3 { margin: 0 0 var(--space-2); }
.product-card p { margin: 0; color: var(--color-muted); font-size: 1rem; }
.product-card .go { display: inline-block; margin-top: var(--space-3); color: var(--color-accent); font-weight: 600; }
.product-card:hover .go { color: var(--color-accent-dark); }

/* 12. Footer ---------------------------------------------------------------- */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
  font-size: 0.95rem;
}

.site-footer p { margin: 0 0 var(--space-2); max-width: none; }
.site-footer .footer-links a { white-space: nowrap; }

/* 13. Responsive + motion ---------------------------------------------------- */
@media (max-width: 46rem) {
  .split { grid-template-columns: minmax(0, 1fr); gap: var(--space-6); }
  .hero-product { padding: var(--space-7) 0 var(--space-6); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}