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

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  background-color: var(--color-background);
  color: var(--color-text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 32px;
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-background);
  border-bottom: 1px solid transparent;
  padding: 14px 32px;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.nav--scrolled {
  background-color: rgba(250, 248, 245, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom-color: var(--color-divider);
  box-shadow: 0 4px 16px -8px rgba(0, 0, 0, 0.12);
}

.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text-primary);
  text-decoration: none;
}

.nav-brand span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-brand-short {
  display: none;
}

.nav-logo {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
  line-height: 1;
}

.nav-links li {
  margin: 0;
}

.nav-links a {
  font-size: 14px;
  color: var(--color-text-secondary);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--color-primary);
}

/* Typography */
h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}

h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 40px;
  margin-bottom: 12px;
}

.eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.section-heading {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 40px;
}

.section-heading h2 {
  margin-top: 0;
}

.section-subtext {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

h3 {
  font-size: 18px;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 8px;
}

p {
  margin-bottom: 16px;
  color: var(--color-text-primary);
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Lists */
ul,
ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

li {
  margin-bottom: 8px;
}

/* Effective date / subtitle */
.subtitle {
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
}

/* Page-level tagline under an H1 */
.page-tagline {
  color: var(--color-text-secondary);
  font-size: 18px;
  margin-bottom: 40px;
}

/* Cards */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
}

/* Feature grid (marketing page) */
.features-section {
  background-color: var(--color-background);
  padding: 40px 32px;
  scroll-margin-top: 72px;
}

.features-section h2 {
  font-size: 42px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.feature-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: 16px;
  padding: 28px 24px;
  text-align: center;
  box-shadow: 0 2px 8px -4px rgba(0, 0, 0, 0.06);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px -16px rgba(0, 0, 0, 0.16);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 14px;
  background-color: var(--color-source-card);
  font-size: 26px;
}

.feature-card h3 {
  margin-top: 0;
  font-size: 16px;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* Hero section (marketing page) */
.hero-split {
  padding: 64px 32px;
}

.hero-split-inner {
  width: fit-content;
  max-width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 440px) minmax(0, 280px);
  align-items: center;
  gap: 64px;
}

.hero-content h1 {
  font-size: 52px;
  margin-bottom: 20px;
}

.hero-content h1 .accent {
  color: var(--color-primary);
}

.hero-description {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
}

.hero-stat {
  padding-right: 32px;
  border-right: 1px solid var(--color-divider);
}

.hero-stat:last-child {
  border-right: none;
  padding-right: 0;
}

.hero-stat-value {
  font-size: 24px;
  font-weight: 700;
}

.hero-stat-label {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-phone-image {
  width: 100%;
  max-width: 280px;
  height: auto;
  border-radius: 24px;
  border: 1px solid var(--color-divider);
  box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.18);
}

/* CTA button */
.cta-button {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-surface);
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 8px 20px -8px rgba(79, 124, 255, 0.5);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    opacity 0.2s ease;
}

.cta-button:hover {
  opacity: 0.95;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -8px rgba(79, 124, 255, 0.55);
  text-decoration: none;
}

.cta-button-large {
  padding: 18px 44px;
  font-size: 18px;
}

/* Closing CTA section */
.cta-section {
  background-color: var(--color-background);
  padding: 16px 32px 40px;
  text-align: center;
}

.cta-section h2 {
  max-width: 640px;
  margin: 0 auto 32px;
  font-size: 42px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--color-divider);
  margin-top: 48px;
  padding: 32px 0 0;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 14px;
}

.screenshots-section + .container .footer {
  margin-top: 0;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 12px;
  list-style: none;
  padding: 0;
}

.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--color-primary);
}

/* Screenshots section */
.screenshots-section {
  background-color: var(--color-background);
  padding: 16px 32px 80px;
  scroll-margin-top: 72px;
  text-align: center;
}

.screenshots-section h2 {
  font-size: 42px;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  max-width: 840px;
  margin: 0 auto;
  justify-items: center;
}

.screenshots-grid img {
  width: 100%;
  max-width: 360px;
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--color-divider);
  box-shadow: 0 24px 48px -20px rgba(0, 0, 0, 0.18);
}

@media (max-width: 560px) {
  .screenshots-grid {
    grid-template-columns: 1fr;
  }

  .screenshots-grid img {
    max-width: 320px;
  }
}

.placeholder-text {
  color: var(--color-text-secondary);
  font-size: 14px;
  font-style: italic;
}

/* FAQ section */
.faq-item {
  margin-bottom: 24px;
}

.faq-item h3 {
  margin-top: 0;
  margin-bottom: 4px;
}

.faq-item p {
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* Responsive */
@media (max-width: 700px) {
  .nav-brand-full {
    display: none;
  }

  .nav-brand-short {
    display: inline;
  }
}

@media (max-width: 900px) {
  .hero-split-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero-content h1 {
    font-size: 40px;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .hero-phone-image {
    max-width: 300px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 32px 16px;
  }

  .hero-split {
    padding: 40px 16px;
  }

  .hero-content h1 {
    font-size: 30px;
  }

  .hero-stats {
    gap: 16px;
  }

  .hero-stat {
    padding-right: 16px;
  }

  .nav-links {
    gap: 16px;
  }

  .nav-brand span {
    font-size: 15px;
  }

  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 20px;
  }

  .features-section h2,
  .screenshots-section h2 {
    font-size: 26px;
  }

  .features-section,
  .screenshots-section {
    padding: 48px 16px;
  }

  .cta-section {
    padding: 8px 16px 32px;
  }

  .cta-section h2 {
    font-size: 26px;
  }

  .cta-button-large {
    padding: 16px 32px;
    font-size: 16px;
  }

  .section-heading {
    margin-bottom: 28px;
  }
}

/* Wider screens: scale up side padding to match */
@media (min-width: 1200px) {
  .container,
  .nav,
  .hero-split,
  .features-section,
  .screenshots-section,
  .cta-section {
    padding-left: 48px;
    padding-right: 48px;
  }
}

@media (min-width: 1600px) {
  .container,
  .nav,
  .hero-split,
  .features-section,
  .screenshots-section,
  .cta-section {
    padding-left: 64px;
    padding-right: 64px;
  }
}