/* Bell Weather — bellweather.dev
   Palette follows the app: the ground is BellWeatherCore's Sky gradient,
   accents are iOS system colors. Type is the system font, so Apple devices
   get SF Pro and everything else gets its own UI face. */

:root {
  --sky-top: #bfd6ef;
  --sky-bottom: #e9eff6;
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #0b1420;
  --text-2: #4a5566;
  --text-3: #7a8494;
  --rule: rgba(11, 20, 32, 0.1);
  --accent: #007aff;
  --warm: #ff3b30;
  --dry: #a2845e;
  --phone-bezel: #1b1d21;
  --shadow: 0 30px 60px -20px rgba(15, 39, 67, 0.35), 0 12px 24px -12px rgba(15, 39, 67, 0.25);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --sky-top: #0f2743;
    --sky-bottom: #07101c;
    --bg: #07101c;
    --card: #111a27;
    --text: #f2f5f9;
    --text-2: #a9b4c3;
    --text-3: #758195;
    --rule: rgba(255, 255, 255, 0.1);
    --accent: #0a84ff;
    --warm: #ff453a;
    --phone-bezel: #2a2d33;
    --shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.7), 0 12px 24px -12px rgba(0, 0, 0, 0.5);
  }
}

:root[data-theme="dark"] {
  --sky-top: #0f2743;
  --sky-bottom: #07101c;
  --bg: #07101c;
  --card: #111a27;
  --text: #f2f5f9;
  --text-2: #a9b4c3;
  --text-3: #758195;
  --rule: rgba(255, 255, 255, 0.1);
  --accent: #0a84ff;
  --warm: #ff453a;
  --phone-bezel: #2a2d33;
  --shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.7), 0 12px 24px -12px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.5 -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 10;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: color-mix(in srgb, var(--sky-top) 72%, transparent);
  border-bottom: 1px solid var(--rule);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 52px; }
.nav .brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; font-size: 17px; }
.nav .brand:hover { text-decoration: none; }
.nav .brand img { width: 28px; height: 28px; border-radius: 7px; }
.nav ul { display: flex; gap: 24px; list-style: none; margin: 0; padding: 0; font-size: 14px; }
.nav ul a { color: var(--text-2); }
.nav ul a:hover { color: var(--text); text-decoration: none; }

/* ---------- Hero ---------- */

.hero {
  background: linear-gradient(180deg, var(--sky-top) 0%, var(--sky-bottom) 70%, var(--bg) 100%);
  text-align: center;
  padding: 64px 0 0;
  overflow: hidden;
}
.hero .icon {
  width: 128px;
  height: 128px;
  margin: 0 auto 28px;
  border-radius: 28px;
  box-shadow: var(--shadow);
}
.hero h1 {
  font-size: clamp(44px, 7vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 700;
  margin: 0 0 16px;
}
.hero .lede {
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.35;
  color: var(--text-2);
  max-width: 34em;
  margin: 0 auto 32px;
}
.badge { display: inline-block; }
.badge img { height: 54px; width: auto; }
.badge:hover { opacity: 0.85; }
.hero .fine { font-size: 14px; color: var(--text-3); margin: 14px 0 0; }

.phones {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 32px;
  margin-top: 56px;
  padding-bottom: 88px;
}
.phones .phone:nth-child(1), .phones .phone:nth-child(3) { width: 250px; transform: translateY(48px); opacity: 0.95; }
.phones .phone:nth-child(2) { width: 300px; }

/* ---------- Phone frame ---------- */

.phone {
  position: relative;
  width: 300px;
  aspect-ratio: 603 / 1311;
  padding: 10px;
  border-radius: 54px;
  background: var(--phone-bezel);
  box-shadow: var(--shadow), inset 0 0 0 1.5px rgba(255, 255, 255, 0.12);
  flex: none;
}
.phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 44px;
}

/* ---------- Features ---------- */

.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
  padding: 72px 0;
  border-top: 1px solid var(--rule);
}
.feature:first-of-type { border-top: 0; }
.feature .media { display: flex; justify-content: center; }
.feature.flip .media { order: -1; }
.feature .eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 10px;
}
.feature h2 {
  font-size: clamp(30px, 4vw, 40px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}
.feature p { color: var(--text-2); margin: 0 0 14px; max-width: 30em; }

.wide {
  padding: 72px 0;
  border-top: 1px solid var(--rule);
  text-align: center;
}
.wide h2 { font-size: clamp(30px, 4vw, 40px); letter-spacing: -0.02em; margin: 0 0 14px; }
.wide > .wrap > p { color: var(--text-2); max-width: 36em; margin: 0 auto 48px; }
.devices { display: flex; justify-content: center; align-items: flex-end; gap: 32px; }
.tablet {
  width: 330px;
  padding: 14px;
  border-radius: 36px;
  background: var(--phone-bezel);
  box-shadow: var(--shadow), inset 0 0 0 1.5px rgba(255, 255, 255, 0.12);
}
.tablet img { border-radius: 22px; }
.fold {
  width: 600px;
  padding: 12px;
  border-radius: 32px;
  background: var(--phone-bezel);
  box-shadow: var(--shadow), inset 0 0 0 1.5px rgba(255, 255, 255, 0.12);
}
.fold img { border-radius: 20px; }
.devices figure { margin: 0; }
.devices figcaption { font-size: 14px; color: var(--text-3); margin-top: 14px; }

/* ---------- Also ---------- */

.also {
  padding: 72px 0;
  border-top: 1px solid var(--rule);
}
.also h2 { font-size: 28px; letter-spacing: -0.015em; margin: 0 0 28px; }
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.tile {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 20px;
  padding: 22px 22px 20px;
}
.tile svg { width: 26px; height: 26px; color: var(--accent); margin-bottom: 12px; }
.tile h3 { font-size: 17px; margin: 0 0 6px; }
.tile p { font-size: 15px; color: var(--text-2); margin: 0; }

/* ---------- FAQ ---------- */

.faq { padding: 72px 0; border-top: 1px solid var(--rule); }
.faq .wrap { max-width: 760px; }
.faq h2 { font-size: clamp(30px, 4vw, 40px); letter-spacing: -0.02em; margin: 0 0 24px; }
.faq details { border-bottom: 1px solid var(--rule); }
.faq details:first-of-type { border-top: 1px solid var(--rule); }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 32px 18px 0;
  font-weight: 600;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 6px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--text-3);
  border-bottom: 2px solid var(--text-3);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.2s;
}
.faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq details > div { padding: 0 0 20px; color: var(--text-2); }
.faq details > div p { margin: 0 0 12px; }
.faq details > div p:last-child { margin-bottom: 0; }

/* ---------- Press ---------- */

.press { padding: 72px 0; border-top: 1px solid var(--rule); }
.press .wrap { max-width: 760px; }
.press h2 { font-size: 28px; letter-spacing: -0.015em; margin: 0 0 12px; }
.press p { color: var(--text-2); }
.press ul { padding-left: 1.2em; color: var(--text-2); }
.press li { margin: 6px 0; }

/* ---------- CTA + footer ---------- */

.cta {
  text-align: center;
  padding: 88px 0 96px;
  background: linear-gradient(0deg, var(--sky-top) 0%, var(--bg) 100%);
}
.cta img.icon { width: 88px; height: 88px; border-radius: 20px; margin: 0 auto 20px; box-shadow: var(--shadow); }
.cta h2 { font-size: clamp(28px, 4vw, 36px); letter-spacing: -0.02em; margin: 0 0 24px; }

footer {
  background: var(--sky-top);
  border-top: 1px solid var(--rule);
  font-size: 13px;
  color: var(--text-3);
  padding: 28px 0 40px;
}
footer .row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; }
footer ul { display: flex; flex-wrap: wrap; gap: 20px; list-style: none; margin: 0; padding: 0; }
footer a { color: var(--text-2); }
footer .legal { margin-top: 16px; line-height: 1.6; }

/* ---------- Small screens ---------- */

@media (max-width: 860px) {
  .feature { grid-template-columns: 1fr; gap: 40px; padding: 56px 0; text-align: center; }
  .feature p { margin-left: auto; margin-right: auto; }
  .feature.flip .media { order: 0; }
  .grid { grid-template-columns: 1fr 1fr; }
  .devices { flex-direction: column; align-items: center; gap: 40px; }
  .tablet { width: min(100%, 330px); }
  .fold { width: min(100%, 600px); }
}

@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  .nav ul { gap: 16px; }
  .nav ul li.hide-sm { display: none; }
  .hero { padding-top: 48px; }
  .hero .icon { width: 104px; height: 104px; border-radius: 23px; }
  .phones { gap: 0; margin-top: 48px; }
  .phones .phone:nth-child(1), .phones .phone:nth-child(3) { display: none; }
  .phones .phone:nth-child(2) { width: 260px; }
  .phones { padding-bottom: 56px; }
  /* the hero already shows this screen */
  .feature:first-of-type .media { display: none; }
  .phone { width: 260px; border-radius: 46px; padding: 9px; }
  .phone img { border-radius: 37px; }
  .grid { grid-template-columns: 1fr; }
  footer .row { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}