/* SmartFilter promotional site
   Brand color #5B4FF2 derived from the app's MainColor asset (rgb 91,79,242). */

:root {
  --brand: #5B4FF2;
  --brand-dark: #4339c9;
  --brand-soft: #efeefe;
  --ink: #14152b;
  --body: #4a4b63;
  --muted: #8a8ca3;
  --bg: #ffffff;
  --bg-alt: #f6f6fc;
  --line: #e7e7f1;
  --junk: #ff5a5f;
  --promo: #ff9f0a;
  --txn: #30c48d;
  --inbox: var(--brand);
  --radius: 18px;
  --shadow: 0 24px 60px -24px rgba(20, 21, 43, 0.35);
  --shadow-shot: drop-shadow(0 10px 16px rgba(20, 21, 43, 0.28)) drop-shadow(0 32px 54px rgba(20, 21, 43, 0.38));
  --maxw: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--body);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { color: var(--ink); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5.5vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.5rem); font-weight: 800; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0 0 1em; }
a { color: var(--brand); text-decoration: none; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .78rem;
  font-weight: 700;
  color: var(--brand);
  margin-bottom: .8em;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .8rem 1.4rem; border-radius: 999px; font-weight: 600;
  border: 1.5px solid transparent; cursor: pointer; transition: .18s ease;
}
.btn--small { padding: .55rem 1.1rem; background: var(--brand); color: #fff; }
.btn--small:hover { background: var(--brand-dark); }
.btn--ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: var(--brand); color: var(--brand); }

.badge-appstore { display: inline-block; transition: transform .18s ease, opacity .18s ease; }
.badge-appstore:hover { transform: translateY(-2px); opacity: .9; }
.badge-appstore img { display: block; width: 160px; height: auto; }

/* Top app banner */
.appbanner {
  position: sticky; top: 0; z-index: 60;
  display: flex; align-items: center; gap: 12px;
  background: var(--ink); color: #fff; padding: 10px 16px;
}
.appbanner.is-hidden { display: none; }
.appbanner__close {
  background: none; border: 0; color: #9a9bb5; font-size: 1.4rem;
  line-height: 1; cursor: pointer; padding: 0 4px;
}
.appbanner__icon { border-radius: 10px; }
.appbanner__text { display: flex; flex-direction: column; line-height: 1.25; }
.appbanner__text strong { font-size: .95rem; }
.appbanner__text span { font-size: .8rem; color: #b9bad0; }
.appbanner__cta {
  margin-left: auto; background: var(--brand); color: #fff;
  padding: .45rem 1.2rem; border-radius: 999px; font-weight: 700; font-size: .9rem;
}
.appbanner__cta:hover { background: var(--brand-dark); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.85); backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; gap: 24px; height: 64px; }
.nav__brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--ink); font-size: 1.1rem; }
.nav__brand img { border-radius: 8px; }
.nav__links { display: flex; gap: 26px; margin-left: 12px; }
.nav__links a { color: var(--body); font-weight: 500; }
.nav__links a:hover { color: var(--brand); }
.nav .btn { margin-left: auto; }

/* Hero */
.hero { padding: clamp(48px, 8vw, 96px) 0; background:
  radial-gradient(1200px 500px at 85% -10%, var(--brand-soft), transparent 60%); }
.hero__inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.lede { font-size: 1.18rem; color: var(--body); max-width: 32ch; }
.hero__cta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin: 1.6rem 0 1.4rem; }
.hero__points { list-style: none; display: flex; flex-wrap: wrap; gap: 18px; padding: 0; margin: 0; color: var(--muted); font-size: .92rem; }
.hero__points li { position: relative; padding-left: 22px; }
.hero__points li::before { content: "✓"; position: absolute; left: 0; color: var(--txn); font-weight: 800; }

/* Hero screenshot */
.hero__device { display: flex; justify-content: center; }
.hero__screenshot {
  width: auto; height: auto; max-width: min(100%, 280px); max-height: 560px;
  filter: var(--shadow-shot);
}

/* Screens showcase */
.screenshots { display: flex; justify-content: center; gap: 36px; flex-wrap: wrap; }
.screenshot { text-align: center; }
.screenshot img {
  width: auto; height: auto; max-width: min(100%, 240px); max-height: 460px;
  filter: var(--shadow-shot);
}
.screenshot figcaption { margin-top: 16px; font-weight: 700; color: var(--ink); }

/* Trust strip */
.trust { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-alt); }
.trust__inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 32px 24px; text-align: center; }
.trust strong { display: block; font-size: 1.8rem; font-weight: 800; color: var(--brand); }
.trust span { font-size: .9rem; color: var(--muted); }

/* Sections */
.section { padding: clamp(56px, 9vw, 100px) 0; }
.section--alt { background: var(--bg-alt); }
.section__head { max-width: 620px; margin: 0 auto 48px; text-align: center; }
.section__head p { color: var(--muted); font-size: 1.1rem; }

/* Feature grid */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.card__icon { font-size: 1.8rem; width: 56px; height: 56px; display: grid; place-items: center; background: var(--brand-soft); border-radius: 14px; margin-bottom: 16px; }
.card p { margin: 0; color: var(--body); }

/* Steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.step { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; }
.step__num { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--brand); color: #fff; font-weight: 800; margin-bottom: 16px; }
.step p { margin: 0; }

/* Privacy */
.privacy__inner { display: grid; grid-template-columns: 1.2fr .8fr; gap: 56px; align-items: center; }
.checklist { list-style: none; padding: 0; margin: 0 0 1.8rem; display: grid; gap: 12px; }
.checklist li { position: relative; padding-left: 32px; color: var(--ink); font-weight: 500; }
.checklist li::before { content: "✓"; position: absolute; left: 0; top: -1px; width: 22px; height: 22px; display: grid; place-items: center; background: var(--txn); color: #fff; border-radius: 50%; font-size: .75rem; font-weight: 800; }
.privacy__art { display: flex; justify-content: center; }
.shield { font-size: 6rem; width: 220px; height: 220px; display: grid; place-items: center; background: radial-gradient(circle at 50% 40%, var(--brand-soft), transparent 70%); border-radius: 50%; }

/* FAQ */
.faq { max-width: 760px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { background: var(--bg); border: 1px solid var(--line); border-radius: 14px; padding: 4px 22px; }
.faq summary { cursor: pointer; font-weight: 700; color: var(--ink); padding: 16px 0; list-style: none; position: relative; padding-right: 28px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%); font-size: 1.3rem; color: var(--brand); transition: transform .2s ease; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { margin: 0 0 16px; color: var(--body); }

/* Final CTA */
.cta { padding: clamp(56px, 9vw, 100px) 0; }
.cta__inner { text-align: center; background: linear-gradient(135deg, var(--brand), #7b6cff); color: #fff; border-radius: 28px; padding: 56px 24px; box-shadow: var(--shadow); }
.cta__inner img { margin: 0 auto 18px; border-radius: 16px; }
.cta__inner h2 { color: #fff; }
.cta__inner p { color: rgba(255,255,255,.85); margin-bottom: 1.6rem; }
.cta .badge-appstore { display: inline-block; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 40px 0; background: var(--bg-alt); }
.footer__inner { display: flex; flex-direction: column; align-items: center; gap: 16px; text-align: center; }
.footer__brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--ink); }
.footer__brand img { border-radius: 7px; }
.footer__links { display: flex; flex-wrap: wrap; gap: 22px; justify-content: center; }
.footer__links a { color: var(--body); font-weight: 500; }
.footer__links a:hover { color: var(--brand); }
.footer__legal { font-size: .8rem; color: var(--muted); margin: 0; max-width: 60ch; }

/* Responsive */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .hero__inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero__copy { display: flex; flex-direction: column; align-items: center; }
  .lede { max-width: 46ch; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .privacy__inner { grid-template-columns: 1fr; text-align: center; }
  .checklist li { text-align: left; }
  .privacy__copy { display: flex; flex-direction: column; align-items: center; }
}
@media (max-width: 560px) {
  .trust__inner { grid-template-columns: repeat(2, 1fr); }
  .grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .hero__points { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}