/* ============ Design tokens ============ */
:root {
  --background: oklch(0.14 0.02 280);
  --foreground: oklch(0.98 0.005 60);
  --surface: oklch(0.18 0.025 280);
  --surface-2: oklch(0.22 0.03 280);
  --muted: oklch(0.72 0.02 40);
  --primary: oklch(0.7 0.21 38);
  --primary-fg: oklch(0.14 0.02 30);
  --accent: oklch(0.84 0.16 75);
  --border: oklch(0.32 0.04 40 / 60%);

  --gradient-signal: linear-gradient(135deg, oklch(0.7 0.21 38), oklch(0.84 0.16 75));
  --shadow-glow: 0 0 40px oklch(0.7 0.21 38 / 40%), 0 0 80px oklch(0.84 0.16 75 / 18%);
  --shadow-elevated: 0 30px 80px -20px oklch(0.7 0.21 38 / 45%);

  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;

  --radius: 14px;
  --container: 1120px;
}

/* ============ Base ============ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--foreground);
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, oklch(0.7 0.21 38 / 22%), transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 30%, oklch(0.84 0.16 75 / 12%), transparent 60%);
  background-attachment: fixed;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -0.02em; margin: 0; }
p { margin: 0; }
ul { list-style: none; padding: 0; margin: 0; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 1.25rem; }

/* ============ Utilities ============ */
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.center { text-align: center; }
.eyebrow { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.2em; color: var(--muted); }
.eyebrow.accent { color: var(--accent); }
.text-signal {
  background: var(--gradient-signal);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.glass {
  background: oklch(0.18 0.025 280 / 60%);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid oklch(1 0 0 / 8%);
  border-radius: calc(var(--radius) + 4px);
}
.bg-grid {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image:
    linear-gradient(to right, oklch(1 0 0 / 4%) 1px, transparent 1px),
    linear-gradient(to bottom, oklch(1 0 0 / 4%) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, black, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black, transparent 70%);
}
.ring-signal {
  box-shadow: 0 0 0 1px oklch(0.7 0.21 38 / 45%), 0 0 30px oklch(0.7 0.21 38 / 28%);
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  border-radius: 999px; font-weight: 600; font-size: 0.875rem;
  transition: transform 0.2s ease, background 0.2s ease;
  cursor: pointer; border: 0;
}
.btn-sm { padding: 0.5rem 1rem; }
.btn-lg { padding: 0.95rem 1.6rem; }
.btn-block { width: 100%; padding: 1rem 1.5rem; }
.btn-signal {
  background-image: var(--gradient-signal);
  color: var(--primary-fg);
  box-shadow: var(--shadow-glow);
}
.btn-signal:hover { transform: scale(1.04); }
.btn-glass {
  background: oklch(0.18 0.025 280 / 60%);
  border: 1px solid oklch(1 0 0 / 8%);
  color: var(--foreground);
  backdrop-filter: blur(14px);
}
.btn-glass:hover { background: var(--surface-2); }
.badge-signal {
  background-image: var(--gradient-signal);
  color: var(--primary-fg);
  font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em;
  padding: 0.3rem 0.7rem; border-radius: 999px;
}

/* ============ Nav ============ */
.nav-wrap { position: fixed; top: 1rem; left: 0; right: 0; z-index: 50; }
.nav {
  max-width: var(--container); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 1.25rem; border-radius: 999px;
}
.brand img { height: 32px; width: auto; }
.nav-links { display: none; gap: 2rem; font-size: 0.875rem; color: var(--muted); }
.nav-links a:hover { color: var(--foreground); }
@media (min-width: 768px) { .nav-links { display: flex; } }

/* ============ Hero ============ */
.hero { position: relative; overflow: hidden; padding: 9rem 0 6rem; }
@media (min-width: 768px) { .hero { padding: 11rem 0 8rem; } }
.hero-content { max-width: 900px; margin: 0 auto; text-align: center; }
.hero-content h1 {
  font-size: clamp(2.5rem, 5.5vw, 4.5rem); font-weight: 700; line-height: 1.05;
}
.lead { margin: 1.5rem auto 0; max-width: 640px; font-size: 1.125rem; color: var(--muted); }
.cta-row { display: flex; flex-direction: column; gap: 0.75rem; align-items: center; justify-content: center; margin-top: 2.5rem; }
@media (min-width: 640px) { .cta-row { flex-direction: row; } }
.micro { margin-top: 1rem; font-size: 0.75rem; color: var(--muted); }

.hero-mock { position: relative; max-width: 980px; margin: 4rem auto 0; }
.mock-glow { position: absolute; inset: -2rem; z-index: -1; background-image: var(--gradient-signal); opacity: 0.2; filter: blur(60px); border-radius: 50%; }
.mock { overflow: hidden; box-shadow: var(--shadow-elevated); }
.mock-bar { display: flex; align-items: center; gap: 0.4rem; padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); }
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-r { background: oklch(0.62 0.24 22 / 70%); }
.dot-y { background: oklch(0.84 0.16 75 / 70%); }
.dot-g { background: oklch(0.7 0.21 38 / 70%); }
.mock-url { margin-left: 1rem; font-size: 0.75rem; color: var(--muted); }

.logos { margin-top: 4rem; text-align: center; }
.logos-row { margin-top: 1.25rem; display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem 2.5rem; opacity: 0.6; }
.logos-row span { font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; letter-spacing: 0.15em; color: var(--muted); }

/* ============ Stats ============ */
.stats { padding: 3rem 0; }
.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; text-align: center; }
@media (min-width: 768px) { .stats-grid { grid-template-columns: repeat(4, 1fr); } }
.stat-num { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; }
.stat-label { margin-top: 0.25rem; font-size: 0.85rem; color: var(--muted); }

/* ============ Section base ============ */
.section { padding: 6rem 0; }
@media (min-width: 768px) { .section { padding: 8rem 0; } }
.section-head { max-width: 640px; margin: 0 auto; text-align: center; }
.section-head h2 { margin-top: 0.75rem; font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; }
.section-head p { margin-top: 1rem; }

/* ============ Features ============ */
.feature-grid {
  margin-top: 4rem; display: grid; grid-template-columns: 1fr; gap: 1px;
  background: var(--border); border-radius: calc(var(--radius) + 4px); overflow: hidden;
}
@media (min-width: 640px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .feature-grid { grid-template-columns: repeat(4, 1fr); } }
.feature {
  background: var(--surface); padding: 1.75rem; transition: background 0.2s ease;
}
.feature:hover { background: var(--surface-2); }
.feature-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 12px;
  background-image: var(--gradient-signal); color: var(--primary-fg);
  box-shadow: var(--shadow-glow); margin-bottom: 1.25rem;
}
.feature h3 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; }
.feature p { margin-top: 0.5rem; font-size: 0.875rem; line-height: 1.6; color: var(--muted); }

/* ============ Steps ============ */
.steps { margin-top: 4rem; display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 768px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step { position: relative; overflow: hidden; padding: 2rem; border-radius: calc(var(--radius) + 4px); }
.step-num { font-family: var(--font-display); font-size: 3.5rem; font-weight: 700; line-height: 1;
  background-image: var(--gradient-signal); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.step h3 { margin-top: 1rem; font-size: 1.2rem; font-weight: 600; }
.step p { margin-top: 0.5rem; font-size: 0.875rem; line-height: 1.6; color: var(--muted); }

/* ============ Frameworks ============ */
.framework-wrap { display: grid; grid-template-columns: 1fr; gap: 3rem; align-items: center; }
@media (min-width: 768px) { .framework-wrap { grid-template-columns: 1fr 1fr; } }
.framework-wrap h2 { margin-top: 0.75rem; font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; }
.framework-wrap p { margin-top: 1.25rem; }
.framework-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.framework-tag {
  padding: 0.5rem 1rem; border-radius: 999px; font-size: 0.75rem; font-weight: 500;
  background: oklch(0.18 0.025 280 / 60%); border: 1px solid oklch(1 0 0 / 8%);
  backdrop-filter: blur(14px);
}

/* ============ Testimonial ============ */
.testimonial-wrap { max-width: 800px; }
.testimonial { padding: 2.5rem; text-align: center; margin: 0; }
.quote { width: 36px; height: 36px; color: var(--accent); margin: 0 auto 1rem; }
.testimonial blockquote { font-family: var(--font-display); font-size: clamp(1.25rem, 2.2vw, 1.75rem); line-height: 1.4; margin: 0; }
.testimonial figcaption { margin-top: 1.5rem; font-size: 0.875rem; color: var(--muted); }
.testimonial figcaption strong { color: var(--foreground); }

/* ============ Pricing ============ */
.pricing-wrap { max-width: 980px; margin: 0 auto; }
.pricing-grid { margin-top: 3.5rem; display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 768px) { .pricing-grid { grid-template-columns: 3fr 2fr; } }
.plan { position: relative; overflow: hidden; padding: 2.25rem; }
.plan-glow { position: absolute; top: -8rem; right: -8rem; width: 18rem; height: 18rem; border-radius: 50%; background-image: var(--gradient-signal); opacity: 0.3; filter: blur(60px); }
.plan-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; position: relative; }
.plan-name { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; }
.plan-tag { margin-top: 0.3rem; font-size: 0.85rem; }
.price { display: flex; align-items: baseline; gap: 0.5rem; margin-top: 2rem; position: relative; }
.price-num { font-family: var(--font-display); font-size: 3.5rem; font-weight: 700; letter-spacing: -0.02em; }
.includes { padding: 2rem; height: 100%; }
.includes ul { margin-top: 1.25rem; display: flex; flex-direction: column; gap: 0.75rem; }
.includes li { display: flex; gap: 0.75rem; align-items: flex-start; font-size: 0.875rem; }
.check {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; flex-shrink: 0; border-radius: 50%;
  background: oklch(0.84 0.16 75 / 20%); color: var(--accent); margin-top: 2px;
}
.guarantee { margin-top: 2.5rem; padding: 1.5rem; display: flex; flex-direction: column; gap: 1rem; align-items: center; text-align: center; }
@media (min-width: 768px) { .guarantee { flex-direction: row; text-align: left; } }
.guarantee-icon { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 14px; background-image: var(--gradient-signal); color: var(--primary-fg); box-shadow: var(--shadow-glow); flex-shrink: 0; }
.guarantee-icon svg { width: 24px; height: 24px; }
.guarantee-title { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; }

/* ============ FAQ ============ */
.faq-wrap { max-width: 800px; }
.faq { margin-top: 3rem; display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item { border-radius: calc(var(--radius) + 4px); padding: 0; overflow: hidden; }
.faq-q {
  width: 100%; background: transparent; border: 0; color: inherit;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 1.25rem 1.5rem; font-family: var(--font-display); font-size: 1rem; font-weight: 600;
  text-align: left; cursor: pointer;
}
.faq-q::after {
  content: ""; width: 12px; height: 12px;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted);
  transform: rotate(45deg); transition: transform 0.2s ease;
}
.faq-item.open .faq-q::after { transform: rotate(-135deg); }
.faq-a {
  max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
  font-size: 0.9rem; color: var(--muted); padding: 0 1.5rem;
}
.faq-item.open .faq-a { max-height: 240px; padding-bottom: 1.25rem; }

/* ============ CTA Final ============ */
.cta-final { position: relative; overflow: hidden; padding: 4rem 2rem; text-align: center; max-width: 880px; margin: 0 auto; border-radius: 28px; }
@media (min-width: 768px) { .cta-final { padding: 5rem 3rem; } }
.cta-glow { position: absolute; inset: 0; background-image: var(--gradient-signal); opacity: 0.2; filter: blur(60px); }
.cta-final h2 { position: relative; font-size: clamp(2rem, 5vw, 3.75rem); font-weight: 700; line-height: 1.1; }
.cta-final p { position: relative; margin: 1.25rem auto 0; max-width: 520px; }
.cta-final a { position: relative; margin-top: 2rem; }

/* ============ Footer ============ */
footer { border-top: 1px solid var(--border); padding: 2.5rem 0; }
.footer-row { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
@media (min-width: 768px) { .footer-row { flex-direction: row; justify-content: space-between; } }
.footer-brand { display: flex; align-items: center; gap: 0.75rem; }
.footer-brand img { height: 24px; width: auto; }
.footer-links { display: flex; gap: 1.5rem; font-size: 0.8rem; color: var(--muted); }
.footer-links a:hover { color: var(--foreground); }

/* ============ Reveal animation ============ */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }