/* Headwater site. Same system as briefwell.app, with mint as the one accent. */
:root {
  color-scheme: light dark;
  --bg: #fff;
  --bar: #f5f5f7;
  --card: #f5f5f7;
  --card-hi: #e8e8ed;
  --ink: #1d1d1f;
  --ink-2: #5f5f64;
  --ink-3: #6a6a6f;
  --line: #00000014;
  --accent: #1b7a3e;
  --on-accent: #fff;
  --ease: cubic-bezier(.32,.72,0,1);
  --spring: cubic-bezier(.34,1.4,.64,1);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131315; --bar: #1a1a1d; --card: #1f1f22; --card-hi: #27272b;
    --ink: #f5f5f7; --ink-2: #a1a1a6; --ink-3: #909095; --line: #ffffff1a;
    --accent: #8fd694; --on-accent: #0e1a11;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #131315; --bar: #1a1a1d; --card: #1f1f22; --card-hi: #27272b;
  --ink: #f5f5f7; --ink-2: #a1a1a6; --ink-3: #909095; --line: #ffffff1a;
  --accent: #8fd694; --on-accent: #0e1a11;
}
:root[data-theme="light"] { color-scheme: light; }

* { box-sizing: border-box; }
html { background: var(--bg); color: var(--ink); font: 16px/1.5 var(--font); -webkit-font-smoothing: antialiased; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { display: flex; flex-direction: column; min-height: 100vh; margin: 0; background: var(--bg); overflow-x: hidden; }
main { flex: 1; }
a { color: inherit; text-decoration: none; }
img { display: block; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; }
[id] { scroll-margin-top: 88px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.wrap { max-width: 1072px; margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: 16px; top: -48px; z-index: 30; padding: 8px 14px; border-radius: 999px; background: var(--accent); color: var(--on-accent); font-weight: 600; }
.skip:focus { top: 4px; }

/* Type scale */
.h-hero { margin: 0; font-size: 60px; font-weight: 600; line-height: 1.04; letter-spacing: -.032em; }
.h-section { margin: 0; font-size: 40px; font-weight: 600; line-height: 1.08; letter-spacing: -.026em; text-wrap: balance; }
.h-card { margin: 0; font-size: 19px; font-weight: 600; line-height: 1.3; letter-spacing: -.01em; }
.lede { font-size: 17px; line-height: 1.6; color: var(--ink-2); }
.text-link { color: var(--accent); font-weight: 500; }
.text-link:hover { text-decoration: underline; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 26px; border: 0; border-radius: 999px; cursor: pointer;
  background: var(--accent); color: var(--on-accent); font-size: 16px; font-weight: 600;
  transition: transform .45s var(--spring), filter .2s, background .2s;
}
.btn:hover { filter: brightness(1.07); transform: translateY(-1px); }
.btn:active { transform: scale(.97); transition-duration: .12s; }
.btn .nudge { margin: 0 -4px 0 -2px; transition: transform .35s var(--spring); }
.btn:hover .nudge { transform: translateX(3px); }
.btn-quiet { background: var(--card); color: var(--ink); }
.btn-quiet:hover { filter: none; background: var(--card-hi); }

/* Not a link until there is a real App Store page to send people to */
.soon { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-2); cursor: default; }
.soon i, .dot { flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

/* Top bar */
.topbar { background: var(--bar); font-size: 13px; color: var(--ink-2); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 36px; }
.maker { display: inline-flex; align-items: center; gap: 8px; margin-left: -8px; padding: 4px 8px; border-radius: 999px; color: var(--ink-2); transition: background .2s, color .2s; }
.maker b { font-weight: 600; color: var(--ink); }
.maker .peaks { width: 20px; height: 14px; color: var(--ink-2); transition: color .25s, transform .4s var(--spring); }
.maker .out { width: 10px; height: 10px; opacity: .6; transition: transform .35s var(--spring), opacity .2s; }
.maker:hover { background: var(--card-hi); color: var(--ink); }
.maker:hover .peaks { color: var(--accent); transform: translateY(-1px); }
.maker:hover .out { opacity: 1; transform: translate(2px, -2px); }
.icon-btn { display: none; place-items: center; width: 28px; height: 28px; border: 0; border-radius: 7px; background: none; color: var(--ink-2); cursor: pointer; transition: background .2s, color .2s, transform .45s var(--spring); }
.js .icon-btn { display: grid; }
.icon-btn:active { transform: rotate(180deg); }
.icon-btn:hover { background: var(--card-hi); color: var(--ink); }

/* Nav */
.nav { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 80%, transparent); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); }
.nav-inner { display: flex; align-items: center; gap: 32px; height: 64px; }
.brand { display: flex; align-items: center; gap: 9px; font-size: 17px; font-weight: 600; letter-spacing: -.01em; }
.brand img { border-radius: 6px; }
.nav-links { display: flex; gap: 24px; font-size: 14.5px; color: var(--ink-2); }
.nav-links a { transition: color .2s; }
.nav-links a:hover, .nav-links a[aria-current] { color: var(--ink); }
.nav-right { margin-left: auto; font-size: 14px; }

/* Hero */
.hero { padding: 88px 0 0; text-align: center; }
.hero .soon { padding: 6px 14px; border-radius: 999px; box-shadow: 0 0 0 1px var(--line); font-size: 14px; color: var(--ink); }
.hero .h-hero { margin: 28px auto 0; max-width: 900px; }
.inline-icon { display: inline-block; width: .92em; height: .92em; margin: 0 .02em; border-radius: .2em; vertical-align: -.13em; }
.hero-sub { margin: 24px auto 0; max-width: 600px; font-size: 19px; line-height: 1.55; color: var(--ink-2); text-wrap: balance; }
.hero-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 32px; }
.hero-meta { margin-top: 22px; display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 10px; font-size: 14.5px; color: var(--ink-2); }
.hero-meta i { font-style: normal; color: var(--ink-3); }
.hero-meta .hot { color: var(--accent); font-weight: 600; }
.hero-meta-2 { margin-top: 8px; font-size: 13.5px; color: var(--ink-3); }

/* Real app screens, framed like a phone */
.phone { display: block; width: 100%; max-width: 300px; height: auto; margin: 0 auto; border-radius: 44px; background: #1c1c1e; box-shadow: 0 0 0 1px var(--line), 0 0 0 7px #2a2a2e, 0 0 0 8px var(--line), 0 30px 80px -20px #0f1e4659; }
.phone-hero { max-width: 340px; margin-top: 64px; }
.sample { margin-top: 26px; font-size: 13.5px; color: var(--ink-3); }

/* Sections */
.section { padding: 120px 0 0; }
.head { max-width: 680px; }
.head .lede { margin-top: 18px; }
.card { border-radius: 18px; background: var(--card); }

.features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 48px; }
.feature { padding: 24px; }
.feature-mark { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); }
.feature-mark svg { width: 20px; height: 20px; }
.feature .h-card { margin-top: 16px; }
.feature ul { margin-top: 12px; display: grid; gap: 8px; font-size: 15px; line-height: 1.5; color: var(--ink-2); }
.feature p { margin-top: 14px; font-size: 15px; }

.split { display: grid; grid-template-columns: 5fr 6fr; gap: 64px; align-items: center; }
.copy .lede { margin-top: 18px; }
.copy .lede + .lede { margin-top: 12px; }
.split-phone { grid-template-columns: 7fr 5fr; }
.split-phone.flip { grid-template-columns: 5fr 7fr; }
.split-phone.flip .copy { order: 2; }
.copy .feature-mark + .h-section { margin-top: 18px; }
.points { margin-top: 18px; display: grid; gap: 12px; font-size: 17px; line-height: 1.5; color: var(--ink-2); }
.coverage { margin-top: 28px; padding: 24px; }
.coverage-num { font-size: 40px; font-weight: 600; line-height: 1.08; letter-spacing: -.026em; }
.coverage-label { margin-top: 4px; font-size: 15px; color: var(--ink-2); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.chips li { padding: 6px 13px; border-radius: 999px; background: var(--bg); box-shadow: 0 0 0 1px var(--line); font-size: 14px; }

.final { display: flex; flex-direction: column; align-items: center; padding: 72px 24px; text-align: center; }
.final img { border-radius: 19px; }
.final .h-section { margin-top: 24px; }
.final .lede { margin-top: 14px; }
.final .btn-quiet { background: var(--card-hi); }
.final .btn-quiet:hover { background: var(--bg); }
.final .hero-cta { margin-top: 26px; align-items: center; gap: 20px; }
.safety { max-width: 640px; margin: 24px auto 0; font-size: 13.5px; line-height: 1.55; text-align: center; color: var(--ink-3); }
main > .section:last-child { padding-bottom: 96px; }

/* Footer */
.footer { padding: 32px 0 48px; font-size: 14px; color: var(--ink-2); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer .brand { font-size: 15px; color: var(--ink); }
.footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer a { transition: color .2s; }
.footer nav a:hover, .footer span a:hover { color: var(--ink); }

/* Support, privacy and 404 */
.page-head { padding: 80px 0 48px; text-align: center; }
.page-head h1 { margin: 0; font-size: 48px; font-weight: 600; line-height: 1.06; letter-spacing: -.03em; }
.page-head p { max-width: 600px; margin: 18px auto 0; font-size: 19px; line-height: 1.55; color: var(--ink-2); text-wrap: balance; }
.page-head a { color: var(--accent); font-weight: 500; }
.prose { max-width: 720px; margin: 0 auto; padding-bottom: 96px; font-size: 16px; line-height: 1.65; color: var(--ink-2); }
.prose h2 { margin: 56px 0 14px; font-size: 28px; font-weight: 600; line-height: 1.15; letter-spacing: -.02em; color: var(--ink); }
.prose h3 { margin: 36px 0 12px; font-size: 15px; font-weight: 600; color: var(--ink-2); }
.prose p + p { margin-top: 14px; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; text-decoration-thickness: 1px; }
.prose .meta { margin-bottom: 24px; font-size: 14px; text-align: center; color: var(--ink-3); }
.summary, .toc, .contact-card { padding: 24px; border-radius: 18px; background: var(--card); }
.summary h2, .contact-card h2 { margin: 0 0 12px; font-size: 19px; letter-spacing: -.01em; line-height: 1.3; }
.summary ul { display: grid; gap: 8px; padding-left: 20px; list-style: disc; font-size: 15px; line-height: 1.55; }
.summary li::marker { color: var(--accent); }
.toc { margin-top: 12px; font-size: 15px; }
.toc p { font-weight: 600; color: var(--ink); }
.toc ol { margin: 10px 0 0; padding: 0; list-style: none; columns: 2; column-gap: 24px; }
.toc li { padding: 3px 0; break-inside: avoid; }
.toc a { color: var(--ink-2); text-decoration: none; }
.toc a:hover { color: var(--accent); }
.contact-card { font-size: 15px; }
.prose .email { font-size: 21px; font-weight: 600; letter-spacing: -.01em; }
.prose .email a { text-decoration: none; }
.faq details { border-radius: 14px; background: var(--card); }
.faq details + details { margin-top: 8px; }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 15px 18px; border-radius: 14px; font-size: 15.5px; font-weight: 500; color: var(--ink); cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; flex: none; width: 14px; height: 14px;
  background: linear-gradient(var(--ink-2), var(--ink-2)) center / 100% 1.75px no-repeat, linear-gradient(var(--ink-2), var(--ink-2)) center / 1.75px 100% no-repeat;
  transition: transform .4s var(--spring);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 18px 18px; font-size: 15px; line-height: 1.55; }

@media (max-width: 860px) {
  .split, .split-phone, .split-phone.flip { grid-template-columns: 1fr; gap: 40px; }
  .split-phone.flip .copy { order: 0; }
}
@media (max-width: 680px) {
  .h-hero { font-size: 38px; }
  .h-section { font-size: 30px; }
  .hero { padding-top: 56px; }
  .phone-hero { max-width: 280px; margin-top: 48px; }
  .phone { max-width: 270px; border-radius: 40px; }
  .points { font-size: 16px; }
  .hero-sub { font-size: 17px; }
  .hero-meta i { display: none; }
  .hero-meta { gap: 4px 14px; }
  .section { padding-top: 80px; }
  .features { grid-template-columns: 1fr; margin-top: 32px; }
  .nav-inner { gap: 16px; }
  .nav-links { margin-left: auto; gap: 16px; }
  .nav-links .wide, .nav-right { display: none; }
  .page-head { padding: 56px 0 32px; }
  .page-head h1 { font-size: 38px; }
  .page-head p { font-size: 17px; }
  .prose h2 { font-size: 24px; margin-top: 44px; }
  .toc ol { columns: 1; }
  .final { padding: 56px 20px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer nav { justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}