:root {
  --font-display: "Cabinet Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "Satoshi", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --color-bg: #050814;
  --color-surface: #0b1020;
  --color-border: #1b2238;
  --color-divider: #202947;

  --color-text: #f9fbff;
  --color-text-muted: #a4afce;
  --color-text-faint: #6d7694;

  --color-primary: #355fe9;
  --color-accent: #f97316;
  --color-accent-light: rgba(249, 115, 22, 0.16);

  --shadow-sm: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 16px 40px rgba(0, 0, 0, 0.45);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --text-xs: 0.78rem;
  --text-sm: 0.9rem;
  --text-base: 1rem;
  --text-lg: 1.1rem;
  --text-xl: 1.4rem;
  --text-hero: clamp(2.5rem, 4vw, 3.1rem);

  --transition: 160ms ease-out;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  background: radial-gradient(circle at top, #111827 0, #050814 45%, #02030a 100%);
  color: var(--color-text);
}

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

/* Layout */

.container {
  width: min(1040px, 100% - 3rem);
  margin: 0 auto;
}

.container-narrow {
  width: min(760px, 100% - 3rem);
  margin: 0 auto;
}

/* Nav */

.nav {
  border-bottom: 1px solid rgba(31, 41, 55, 0.7);
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), rgba(15, 23, 42, 0.96));
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-3);
  width: min(1040px, 100% - 3rem);
  margin: 0 auto;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-base);
  letter-spacing: -0.03em;
}

.logo span {
  margin-top: 1px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  border: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}

.btn-lg {
  padding-block: var(--space-3);
  padding-inline: var(--space-6);
}

.btn-primary {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #f9fbff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Outline button for demo link */

.btn-outline {
  border: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-text);
  background: transparent;
  transition: all var(--transition);
}

.btn-outline:hover {
  border-color: var(--color-text);
  background: var(--color-surface);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Hero */

.hero {
  padding-block: clamp(var(--space-16), 10vw, var(--space-24)) clamp(var(--space-12), 8vw, var(--space-20));
  text-align: center;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

.hero-content {
  max-width: 640px;
  margin-inline: auto;
}

.hero-badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.hero-heading {
  font-size: var(--text-hero);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--color-text);
  max-width: 14ch;
  margin-inline: auto;
  margin-bottom: var(--space-6);
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  line-height: 1.5;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-12);
}

.hero-note {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  max-width: 46ch;
  margin-inline: auto;
}

/* Pricing section */

.pricing {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

.section-title {
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  text-align: center;
}

.section-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: var(--space-10);
}

.pricing-card {
  background: radial-gradient(circle at top left, rgba(53, 95, 233, 0.16), rgba(15, 23, 42, 0.96));
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
}

.pricing-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.pricing-price-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.pricing-price {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.pricing-amount {
  font-size: 2.5rem;
  font-weight: 800;
  font-family: var(--font-display);
  letter-spacing: -0.04em;
}

.pricing-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.pricing-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.pricing-points li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.pricing-cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.btn-full {
  width: 100%;
}

.pricing-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* Footer */

.footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-6);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
}

/* Email form */

.email-form {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.email-input {
  flex: 1 1 220px;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  font-size: var(--text-sm);
  background: var(--color-bg);
}

.email-input::placeholder {
  color: var(--color-text-faint);
}

.email-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.18);
}

/* Responsive stacking */

@media (max-width: 640px) {
  .email-form {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta .btn,
  .hero-cta .btn-primary,
  .hero-cta .btn-outline {
    width: 100%;
  }
}