:root {
  --bg-primary: #0a0f0d;
  --bg-secondary: #111916;
  --bg-card: #151d19;
  --fg-primary: #e8ede9;
  --fg-secondary: #8a9b8e;
  --fg-muted: #5a6b5e;
  --accent: #00d47b;
  --accent-dim: #00a35f;
  --accent-glow: rgba(0, 212, 123, 0.12);
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --max-width: 1080px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- NAV ---- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 15, 13, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-brand span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--fg-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--accent);
  color: #0a0f0d !important;
  padding: 9px 22px;
  border-radius: 8px;
  font-weight: 600 !important;
  font-size: 0.9rem !important;
  transition: background 0.2s, transform 0.15s !important;
}

.nav-cta:hover {
  background: #00f08a !important;
  transform: translateY(-1px);
  color: #0a0f0d !important;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--fg-secondary);
  border-radius: 2px;
  transition: background 0.2s;
}

.nav-hamburger:hover span {
  background: var(--fg-primary);
}

/* ---- HERO ---- */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 32px 60px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 8px 18px;
  border-radius: 100px;
  border: 1px solid rgba(0, 212, 123, 0.2);
  margin-bottom: 40px;
  width: fit-content;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--fg-primary);
  margin-bottom: 28px;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--fg-secondary);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 48px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #0a0f0d;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  padding: 16px 32px;
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(0, 212, 123, 0.25);
}

.btn-primary:hover {
  background: #00f08a;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 212, 123, 0.35);
}

.btn-secondary {
  display: inline-block;
  color: var(--fg-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  padding: 16px 0;
  transition: color 0.2s;
}

.btn-secondary:hover {
  color: var(--fg-primary);
}

.hero-stat {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 28px 32px;
  background: var(--bg-secondary);
  border: 1px solid rgba(0, 212, 123, 0.15);
  border-radius: 16px;
  width: fit-content;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--fg-secondary);
  max-width: 280px;
}

/* ---- PROBLEM ---- */
.problem {
  padding: 100px 32px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 36px 28px;
  transition: border-color 0.3s;
}

.problem-card:hover {
  border-color: rgba(0, 212, 123, 0.2);
}

.problem-icon {
  font-size: 2rem;
  margin-bottom: 20px;
}

.problem-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--fg-primary);
}

.problem-card p {
  color: var(--fg-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ---- FEATURES ---- */
.features {
  padding: 100px 32px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.features-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 64px;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.feature-item:last-child {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.feature-number {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  min-width: 40px;
  padding-top: 4px;
}

.feature-content h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--fg-primary);
}

.feature-content p {
  color: var(--fg-secondary);
  font-size: 1rem;
  line-height: 1.65;
  max-width: 560px;
}

/* ---- HOW ---- */
.how {
  padding: 100px 32px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.how h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 56px;
}

.how-steps {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.how-step {
  flex: 1;
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 32px 28px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.step-marker {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.how-step p {
  color: var(--fg-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

.how-arrow {
  font-size: 1.5rem;
  color: var(--fg-muted);
  padding-top: 36px;
  flex-shrink: 0;
}

/* ---- SOCIAL PROOF ---- */
.social-proof {
  padding: 100px 32px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.social-proof-header {
  text-align: center;
  margin-bottom: 64px;
}

.social-proof-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.social-proof-header p {
  color: var(--fg-secondary);
  font-size: 1.05rem;
}

.testimonials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 72px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 32px 28px;
  transition: border-color 0.3s, transform 0.3s;
}

.testimonial-card:hover {
  border-color: rgba(0, 212, 123, 0.18);
  transform: translateY(-3px);
}

.testimonial-stars {
  color: var(--accent);
  font-size: 0.9rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.testimonial-text {
  color: var(--fg-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 123, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent);
  flex-shrink: 0;
}

.author-name {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fg-primary);
}

.author-role {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.trust-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 56px;
}

.trust-stat {
  text-align: center;
}

.trust-stat-number {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.trust-stat-label {
  color: var(--fg-secondary);
  font-size: 0.9rem;
}

/* ---- CLOSING ---- */
.closing {
  padding: 120px 32px;
  text-align: center;
}

.closing-content {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.closing-sub {
  color: var(--fg-secondary);
  font-size: 1.15rem;
  margin-bottom: 48px;
}

.closing-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.closing-note {
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 48px 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg-primary);
}

.footer-brand span {
  color: var(--accent);
}

.footer-links {
  display: flex;
  gap: 28px;
}

.footer-links a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}

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

.footer-tagline {
  color: var(--fg-muted);
  font-size: 0.85rem;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 0;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 32px;
    font-size: 1rem;
  }

  .nav-cta {
    margin: 8px 32px 0;
    padding: 12px 24px !important;
    border-radius: 8px;
    text-align: center;
  }

  .nav-hamburger {
    display: flex;
  }

  .site-nav {
    position: sticky;
    top: 0;
  }

  .hero {
    min-height: auto;
    padding: 60px 20px 48px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .hero-stat {
    flex-direction: column;
    gap: 8px;
    width: 100%;
  }

  .problem {
    padding: 60px 20px;
  }

  .problem-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .features {
    padding: 60px 20px;
  }

  .feature-item {
    flex-direction: column;
    gap: 12px;
    padding: 28px 0;
  }

  .how {
    padding: 60px 20px;
  }

  .how-steps {
    flex-direction: column;
  }

  .how-arrow {
    display: none;
  }

  .social-proof {
    padding: 60px 20px;
  }

  .testimonials {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .trust-stats {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .closing {
    padding: 80px 20px;
  }

  .closing-actions {
    flex-direction: column;
    align-items: center;
  }

  .footer-content {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
  }
}