/* Preview Health — Shared components: buttons, header, footer, label */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.005em;
  padding: 0.95em 1.4em;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  white-space: nowrap;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}

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

.btn-ghost {
  background: var(--signature);
  color: var(--signature-ink);
  padding: 0.7em 1.15em;
}
.btn-ghost:hover { background: var(--signature-hover); }

.btn:disabled { opacity: 0.55; cursor: not-allowed; }

/* ---------- Header ---------- */
/* Floating glass bar: a rounded, frosted pill that blurs whatever scrolls beneath it */
.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 100;
  padding: 0.75rem var(--gutter) 0;
  margin-bottom: calc(-1 * var(--header-h));
  pointer-events: none;
}
.nav-wrap {
  pointer-events: auto;
  max-width: calc(var(--container) - 2 * var(--gutter));
  margin-inline: auto;
  padding: 0.55rem 0.55rem 0.55rem 1.35rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  border-radius: var(--radius-pill);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  backdrop-filter: blur(22px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: box-shadow 0.3s var(--ease), background-color 0.3s var(--ease);
}
.site-header.is-scrolled .nav-wrap { background: var(--glass-bg-scrolled); box-shadow: var(--glass-shadow-scrolled); }
main { padding-top: var(--header-h); }

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  flex-shrink: 0;
}

.main-nav { position: relative; display: flex; align-items: center; }

.nav-links { display: flex; align-items: center; gap: 2rem; }

.nav-links a:not(.btn) {
  font-size: 0.925rem;
  color: var(--ink-2);
  transition: color 0.2s var(--ease);
}
.nav-links a:not(.btn):hover,
.nav-links a.is-active { color: var(--ink); }
.nav-links a.is-active:not(.btn) { font-weight: 500; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
}
.nav-toggle span { display: block; height: 1.5px; background: var(--ink); border-radius: 2px; }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: calc(100% + 0.6rem);
    right: 0;
    width: min(280px, calc(100vw - 2 * var(--gutter)));
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem;
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 20px 40px -20px rgba(14, 16, 32, 0.25);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
  }
  .nav-links.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav-links a:not(.btn) { display: block; padding: 0.75rem 0.9rem; border-radius: var(--radius-sm); }
  .nav-links a:not(.btn):hover { background: var(--surface); }
  .nav-links .btn { display: flex; margin: 0.4rem; }
}

/* ---------- Label (mono section marker) ---------- */
.subhead {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-size: 0.85rem; /* matches the image captions (≈13.6px at desktop) */
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1;
  color: var(--headline-muted);
  margin: 0;
  justify-self: start;
  align-self: start;
  width: fit-content;
  padding: 0.6em 1em 0.6em 0.85em;
  background: var(--hero-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
}
.subhead::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 0;
  background: var(--accent);
  flex-shrink: 0;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: clamp(3rem, 2rem + 4vw, 5rem) 2rem;
  padding-inline: var(--gutter);
}

.footer-inner {
  max-width: var(--container);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr));
  gap: 2.5rem;
  padding-bottom: 3rem;
}

.footer-brand { display: flex; flex-direction: column; align-items: flex-start; gap: 1rem; }
.footer-tagline { color: var(--ink-2); font-size: var(--fs-small); white-space: nowrap; }

.footer-social {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--ink-2);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.footer-social svg { width: 15px; height: 15px; }
.footer-social:hover { color: var(--ink); border-color: var(--ink); }

.footer-heading {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 1rem;
}

.footer-links { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links a { font-size: var(--fs-small); color: var(--ink-2); transition: color 0.2s var(--ease); overflow-wrap: anywhere; }
.footer-links a:hover { color: var(--ink); }

.footer-bottom {
  max-width: var(--container);
  margin-inline: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.footer-bottom p { font-size: var(--fs-small); color: var(--ink-3); }

@media (max-width: 760px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem 1.5rem; }
  .footer-brand { grid-column: 1 / -1; }
}

/* Brand logo image (light and dark versions) */
.logo-img { display: block; height: 20px; width: auto; max-width: 100%; }
.footer-logo .logo-img { height: 20px; }
.logo-img-dark { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .logo-img-light { display: none; }
  :root:not([data-theme="light"]) .logo-img-dark { display: block; }
}
:root[data-theme="dark"] .logo-img-light { display: none; }
:root[data-theme="dark"] .logo-img-dark { display: block; }

/* Every text link turns brand purple on hover (buttons and the logo excluded) */
a:not(.btn):not(.logo) { transition: color 0.2s var(--ease), border-color 0.2s var(--ease); }
a:not(.btn):not(.logo):hover,
a:not(.btn):not(.logo):focus-visible,
.nav-links a:not(.btn):hover,
.footer-links a:hover,
.form-consent a:hover,
.legal a:hover { color: var(--signature); }
.footer-social:hover,
.person-social:hover { color: var(--signature); border-color: var(--signature); }