/*
 * Tokens mirror apps/mobile/src/theme.ts so the web surface reads as the same
 * product. Do not introduce gradients or accent washes here; the mobile shell
 * intentionally stays on a single flat surface color.
 */

:root {
  --surface: #10131b;
  --surface-container-low: #181c23;
  --surface-container: #1c2028;
  --surface-container-high: #272a32;
  --on-surface: #e0e2ed;
  --on-surface-variant: #c1c6d7;
  --on-surface-muted: rgba(224, 226, 237, 0.55);
  --on-surface-faint: rgba(224, 226, 237, 0.35);
  --primary: #adc6ff;
  --primary-action: #007aff;
  --outline-variant: #414755;
  --hairline: rgba(255, 255, 255, 0.12);
  --hairline-soft: rgba(255, 255, 255, 0.08);
  --card-bg: rgba(255, 255, 255, 0.04);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --screen-margin: clamp(20px, 5vw, 48px);

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI',
    Roboto, sans-serif;

  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--surface);
  color: var(--on-surface);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ------------------------------------------------------------------- nav -- */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--screen-margin);
  background: rgba(16, 19, 27, 0.85);
  border-bottom: 0.5px solid var(--hairline-soft);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.2px;
  color: var(--on-surface);
}

.nav__logo {
  width: 22px;
  height: 22px;
  color: var(--primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--on-surface-variant);
  transition: color 120ms ease;
}

.nav__links a:hover {
  color: var(--on-surface);
}

@media (max-width: 540px) {
  .nav__links {
    gap: var(--space-md);
  }
  .nav__links a:nth-child(2) {
    display: none;
  }
}

/* ----------------------------------------------------------------- main -- */

main {
  flex: 1;
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 var(--screen-margin);
}

.section {
  padding: clamp(56px, 9vw, 96px) 0;
}

.section--cta {
  padding-bottom: clamp(72px, 10vw, 120px);
}

.eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--primary);
  margin: 0 0 var(--space-md);
}

.section__title {
  font-weight: 600;
  font-size: clamp(26px, 4vw, 34px);
  letter-spacing: -0.68px;
  line-height: 1.2;
  margin: 0 0 var(--space-lg);
  color: #ffffff;
}

/* ----------------------------------------------------------------- hero -- */

.hero {
  padding: clamp(64px, 12vw, 128px) 0 clamp(32px, 6vw, 64px);
  text-align: left;
}

.hero__icon {
  width: 64px;
  height: 64px;
  color: var(--primary);
  margin-bottom: var(--space-md);
  display: block;
}

.hero__title {
  font-weight: 300;
  font-size: clamp(48px, 10vw, 80px);
  letter-spacing: -2.4px;
  line-height: 1;
  margin: 0 0 var(--space-md);
  color: #ffffff;
}

.hero__tagline {
  font-size: clamp(20px, 3vw, 24px);
  font-weight: 500;
  letter-spacing: -0.48px;
  line-height: 1.3;
  color: var(--on-surface);
  margin: 0 0 var(--space-md);
}

.hero__lede {
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: -0.17px;
  color: var(--on-surface-muted);
  margin: 0 0 var(--space-xl);
  max-width: 56ch;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* -------------------------------------------------------------- buttons -- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.15px;
  white-space: nowrap;
  border: 0.5px solid transparent;
  transition: transform 120ms ease, background-color 120ms ease,
    border-color 120ms ease, color 120ms ease;
}

.btn svg {
  width: 16px;
  height: 16px;
}

.btn--primary {
  background: var(--primary-action);
  color: #ffffff;
  box-shadow: 0 6px 22px -8px rgba(0, 122, 255, 0.55);
}

.btn--primary:hover {
  transform: translateY(-1px);
  background: #1487ff;
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--on-surface);
  border-color: var(--hairline);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.09);
}

/* ----------------------------------------------------------------- card -- */

.card {
  background: var(--card-bg);
  border: 0.5px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

/* ---------------------------------------------------------------- steps -- */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

@media (max-width: 640px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

.step {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.step__num {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.6px;
  color: var(--primary);
}

.step__title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.36px;
  color: #ffffff;
  margin: 0;
}

.step__body {
  font-size: 15px;
  line-height: 1.5;
  letter-spacing: -0.15px;
  color: var(--on-surface-muted);
  margin: 0;
}

/* ---------------------------------------------------------------- stack -- */

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.stack__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--space-lg);
  gap: var(--space-md);
}

.stack__layer {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--primary);
}

.stack__tech {
  font-size: 15px;
  letter-spacing: -0.15px;
  color: var(--on-surface);
  text-align: right;
}

/* ------------------------------------------------------------------ cta -- */

.cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  padding: var(--space-xl);
}

.cta__title {
  font-weight: 600;
  font-size: 24px;
  letter-spacing: -0.48px;
  margin: 0 0 6px;
  color: #ffffff;
}

.cta__body {
  font-size: 15px;
  line-height: 1.5;
  letter-spacing: -0.15px;
  color: var(--on-surface-muted);
  margin: 0;
  max-width: 48ch;
}

@media (max-width: 640px) {
  .cta {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* --------------------------------------------------------------- footer -- */

.footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: var(--space-lg) var(--screen-margin);
  border-top: 0.5px solid var(--hairline-soft);
  color: var(--on-surface-faint);
  font-size: 13px;
  letter-spacing: -0.13px;
}

.footer a {
  color: var(--on-surface-muted);
  transition: color 120ms ease;
}

.footer a:hover {
  color: var(--on-surface);
}

.footer__sep {
  opacity: 0.4;
}