/* D-Vasive website — matches the app's dark-navy + cyan palette */

:root {
  --bg: #0B1220;
  --bg-gradient: linear-gradient(135deg, #050914 0%, #0B1220 40%, #131D2E 100%);
  --surface: #131D2E;
  --surface-variant: #1B2638;
  --text: #E5E7EB;
  --text-dim: #9CA3AF;
  --outline: #334155;
  --accent: #22D3EE;
  --accent-glow: rgba(34, 211, 238, 0.35);
  --success: #10B981;
  --danger: #EF4444;
  --purple: #A78BFA;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
               Helvetica, Arial, sans-serif;
  line-height: 1.55;
  scroll-behavior: smooth;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover { color: #67E8F9; }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 18, 32, 0.88);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--outline);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--text);
}
.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}
.nav-links {
  display: flex;
  gap: 22px;
  font-size: 15px;
}
.nav-links a { color: var(--text-dim); }
.nav-links a:hover { color: var(--text); }

/* Hero */
.hero {
  padding: 80px 24px 40px;
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(34, 211, 238, 0.10) 0%, transparent 60%),
    transparent;
}
.hero h1 {
  font-size: 64px;
  font-weight: 800;
  letter-spacing: -2px;
  margin: 0 0 16px;
  background: linear-gradient(135deg, #22D3EE 0%, #A78BFA 55%, #F472B6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 28px rgba(34, 211, 238, 0.25));
}
.hero .tagline {
  font-size: 22px;
  color: var(--text);
  max-width: 640px;
  margin: 0 auto 18px;
}
.hero .subtitle {
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 32px;
}
.hero-image {
  max-width: 100%;
  border-radius: 18px;
  border: 1px solid var(--outline);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  margin-top: 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  background: var(--accent);
  color: #051520;
  font-weight: 700;
  border-radius: 12px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 10px 30px rgba(34, 211, 238, 0.25);
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(34, 211, 238, 0.35);
  color: #051520;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--outline);
  box-shadow: none;
}
.btn-ghost:hover { background: var(--surface); color: var(--text); }

/* Sections */
.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 64px 24px;
}
.section h2 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  margin: 0 0 12px;
}
.section .lede {
  color: var(--text-dim);
  font-size: 18px;
  max-width: 720px;
  margin: 0 0 36px;
}
.section.alt {
  background: var(--surface);
  border-top: 1px solid var(--outline);
  border-bottom: 1px solid var(--outline);
}
.section.alt .inner { max-width: 1100px; margin: 0 auto; padding: 64px 24px; }

/* Feature grid */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature {
  background: var(--surface-variant);
  border: 1px solid var(--outline);
  border-radius: 16px;
  padding: 24px;
}
.feature h3 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}
.feature .icon {
  display: inline-flex;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(34, 211, 238, 0.15);
  color: var(--accent);
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 22px;
}
.feature p {
  color: var(--text-dim);
  margin: 0;
  font-size: 15px;
}

/* Screenshot gallery */
.shots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 36px;
}
.shots img {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--outline);
  background: var(--surface-variant);
}

/* Content pages (privacy / faq) */
.content {
  max-width: 780px;
  margin: 0 auto;
  padding: 64px 24px;
}
.content h1 {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -1px;
  margin: 0 0 12px;
}
.content .updated {
  color: var(--text-dim);
  margin: 0 0 32px;
  font-size: 15px;
}
.content h2 {
  font-size: 22px;
  margin: 32px 0 10px;
  color: var(--text);
}
.content h3 {
  font-size: 18px;
  margin: 24px 0 8px;
  color: var(--text);
}
.content p, .content li {
  color: var(--text);
  font-size: 16px;
}
.content ul { padding-left: 20px; }
.content li { margin-bottom: 6px; }

/* FAQ */
.faq-item {
  border-top: 1px solid var(--outline);
  padding: 22px 0;
}
.faq-item:last-child { border-bottom: 1px solid var(--outline); }
.faq-item h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--text);
}
.faq-item p {
  margin: 0;
  color: var(--text-dim);
  font-size: 15px;
}

/* CTA */
.cta {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}
.cta h2 {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -1px;
  margin: 0 0 16px;
}
.cta p {
  color: var(--text-dim);
  font-size: 18px;
  margin: 0 0 28px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--outline);
  padding: 36px 24px;
  color: var(--text-dim);
  font-size: 14px;
  text-align: center;
}
.footer a { margin: 0 10px; color: var(--text-dim); }
.footer a:hover { color: var(--text); }

/* Responsive */
@media (max-width: 640px) {
  .hero { padding: 48px 18px 28px; }
  .hero h1 { font-size: 42px; letter-spacing: -1.5px; }
  .hero .tagline { font-size: 18px; }
  .nav-links { gap: 12px; font-size: 14px; }
  .brand { font-size: 18px; }
  .section h2, .cta h2 { font-size: 28px; }
  .content h1 { font-size: 30px; }
}