/* ── Reset & Base ─────────────────────────────────────── */

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #000;
  --fg: #fff;
  --fg-90: rgba(255, 255, 255, 0.90);
  --fg-70: rgba(255, 255, 255, 0.70);
  --fg-50: rgba(255, 255, 255, 0.50);
  --fg-30: rgba(255, 255, 255, 0.30);
  --fg-13: rgba(255, 255, 255, 0.13);
  --fg-08: rgba(255, 255, 255, 0.08);
  --accent: #3b82f6;
  --radius: 16px;
  --max-width: 960px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--fg-90);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

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

/* ── Layout ──────────────────────────────────────────── */

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

/* ── Navigation ──────────────────────────────────────── */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.8);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--fg-08);
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.site-nav__brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
}

.site-nav__brand:hover {
  text-decoration: none;
}

.site-nav__links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.site-nav__links a {
  color: var(--fg-70);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.site-nav__links a:hover {
  color: var(--fg);
  text-decoration: none;
}

/* ── Hero ────────────────────────────────────────────── */

.hero {
  padding: 140px 0 80px;
  text-align: center;
}

.hero__tagline {
  font-size: clamp(14px, 2vw, 16px);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--fg-50);
  margin-bottom: 16px;
}

.hero__title {
  font-size: clamp(44px, 8vw, 72px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--fg);
  margin-bottom: 20px;
}

.hero__subtitle {
  font-size: clamp(17px, 2.5vw, 20px);
  color: var(--fg-70);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.5;
}

.hero__cta {
  display: inline-block;
  margin-bottom: 60px;
}

.hero__cta img {
  height: 54px;
  width: auto;
  transition: opacity 0.2s;
}

.hero__cta:hover img {
  opacity: 0.85;
}

/* Hero screenshot gallery */
.hero__screenshots {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 0 auto;
  max-width: 800px;
}

.hero__screenshots img {
  width: 220px;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

/* ── Feature Sections ────────────────────────────────── */

.feature {
  padding: 100px 0;
  border-top: 1px solid var(--fg-08);
}

.feature__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature__grid--reverse {
  direction: rtl;
}

.feature__grid--reverse > * {
  direction: ltr;
}

.feature__text {
  max-width: 440px;
}

.feature__label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-50);
  margin-bottom: 12px;
}

.feature__title {
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--fg);
  margin-bottom: 16px;
}

.feature__desc {
  font-size: 16px;
  color: var(--fg-70);
  line-height: 1.65;
}

.feature__media {
  display: flex;
  justify-content: center;
}

.feature__media img {
  max-height: 520px;
  border-radius: 20px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}

/* Dual-device media (iPhone + Watch) */
.feature__media--dual {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  justify-content: center;
}

.feature__media--dual img:first-child {
  max-height: 460px;
}

.feature__media--dual img:last-child {
  max-height: 240px;
  border-radius: 40px;
}

/* ── Highlight Strip ─────────────────────────────────── */

.highlights {
  padding: 80px 0;
  border-top: 1px solid var(--fg-08);
}

.highlights__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.highlight-card {
  background: var(--fg-08);
  border: 1px solid var(--fg-13);
  border-radius: var(--radius);
  padding: 32px 28px;
}

.highlight-card__icon {
  font-size: 28px;
  margin-bottom: 16px;
}

.highlight-card__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 8px;
}

.highlight-card__desc {
  font-size: 14px;
  color: var(--fg-70);
  line-height: 1.6;
}

/* ── CTA Banner ──────────────────────────────────────── */

.cta-banner {
  padding: 100px 0;
  text-align: center;
  border-top: 1px solid var(--fg-08);
}

.cta-banner__title {
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 16px;
}

.cta-banner__desc {
  font-size: 17px;
  color: var(--fg-70);
  margin-bottom: 32px;
}

.cta-banner__cta {
  display: inline-block;
}

.cta-banner__cta img {
  height: 54px;
  width: auto;
  transition: opacity 0.2s;
}

.cta-banner__cta:hover img {
  opacity: 0.85;
}

/* ── Footer ──────────────────────────────────────────── */

.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--fg-08);
  text-align: center;
}

.site-footer__links {
  display: flex;
  justify-content: center;
  gap: 28px;
  list-style: none;
  margin-bottom: 16px;
}

.site-footer__links a {
  color: var(--fg-50);
  font-size: 14px;
  font-weight: 500;
}

.site-footer__links a:hover {
  color: var(--fg);
}

.site-footer__copy {
  font-size: 13px;
  color: var(--fg-30);
}

/* ── Support & Privacy Pages ─────────────────────────── */

.page-header {
  padding: 120px 0 48px;
  text-align: center;
}

.page-header__title {
  font-size: clamp(32px, 6vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 12px;
}

.page-header__subtitle {
  font-size: 17px;
  color: var(--fg-70);
}

.page-body {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px 100px;
}

.page-body h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--fg);
  margin: 48px 0 12px;
}

.page-body h2:first-child {
  margin-top: 0;
}

.page-body p,
.page-body li {
  font-size: 15px;
  color: var(--fg-70);
  line-height: 1.7;
  margin-bottom: 12px;
}

.page-body ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.page-body li {
  margin-bottom: 6px;
}

.page-body strong {
  color: var(--fg-90);
}

/* Support page: contact card */
.contact-card {
  background: var(--fg-08);
  border: 1px solid var(--fg-13);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  margin-bottom: 48px;
}

.contact-card__title {
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 8px;
}

.contact-card__desc {
  font-size: 15px;
  color: var(--fg-70);
  margin-bottom: 16px;
}

.contact-card__email {
  display: inline-block;
  font-size: 16px;
  font-weight: 600;
  color: var(--accent);
  padding: 10px 28px;
  border: 1px solid var(--accent);
  border-radius: 99px;
  transition: background 0.2s, color 0.2s;
}

.contact-card__email:hover {
  background: var(--accent);
  color: var(--fg);
  text-decoration: none;
}

/* FAQ */
.faq-item {
  border-top: 1px solid var(--fg-08);
  padding: 24px 0;
}

.faq-item__q {
  font-size: 16px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 8px;
}

.faq-item__a {
  font-size: 15px;
  color: var(--fg-70);
  line-height: 1.7;
}

/* ── Responsive ──────────────────────────────────────── */

@media (max-width: 768px) {
  .hero {
    padding: 110px 0 60px;
  }

  .hero__screenshots {
    gap: 12px;
  }

  .hero__screenshots img {
    width: 150px;
    border-radius: 18px;
  }

  .feature {
    padding: 64px 0;
  }

  .feature__grid,
  .feature__grid--reverse {
    grid-template-columns: 1fr;
    gap: 40px;
    direction: ltr;
    text-align: center;
  }

  .feature__text {
    max-width: none;
  }

  .feature__media img {
    max-height: 420px;
  }

  .feature__media--dual img:first-child {
    max-height: 360px;
  }

  .feature__media--dual img:last-child {
    max-height: 180px;
  }

  .highlights__grid {
    grid-template-columns: 1fr;
  }

  .site-nav__links {
    gap: 18px;
  }

  .site-nav__links a {
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .hero__screenshots {
    flex-wrap: wrap;
  }

  .hero__screenshots img {
    width: 130px;
    border-radius: 14px;
  }

  .hero__screenshots img:nth-child(3) {
    display: none;
  }
}