:root {
  --primary: #3DBFB8;
  --dark-bg: #0D5F5C;
  --accent: #7DDDD8;
  --text-dark: #1A1A1A;
  --text-light: #FFFFFF;
  --light-gray: #F5F5F5;
  --border-radius: 14px;
  --transition: all 0.3s ease-out;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  background-color: var(--text-light);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ─── Navigation ─── */
.navbar {
  position: sticky;
  top: 0;
  background-color: var(--text-light);
  border-bottom: 1px solid #E8E8E8;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: box-shadow 0.3s ease-out;
}

.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  text-decoration: none;
  transition: var(--transition);
}

.nav-logo:hover {
  opacity: 0.8;
}

/* Real logo image */
.logo-img {
  height: 36px;
  width: auto;
  display: block;
}

/* Fallback logo icon (hidden by default, shown if image fails) */
.logo-icon {
  width: 32px;
  height: 32px;
  background-color: var(--primary);
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  position: relative;
}

.logo-icon::after {
  content: '✓';
  color: var(--text-light);
  font-size: 18px;
  font-weight: 700;
}

.nav-cta {
  background-color: var(--primary);
  color: var(--text-light);
  border: none;
  padding: 10px 20px;
  border-radius: var(--border-radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.nav-cta:hover {
  background-color: var(--dark-bg);
  transform: translateY(-2px);
}

/* ─── Hero Section — Animated Gradient ─── */
.hero {
  padding: 100px 20px;
  text-align: center;
  background: linear-gradient(-45deg, #3DBFB8, #0D5F5C, #7DDDD8, #3DBFB8);
  background-size: 400% 400%;
  animation: heroGradient 18s ease-in-out infinite;
  position: relative;
}

/* Semi-transparent overlay for text contrast */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 50, 48, 0.25);
  pointer-events: none;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: clamp(14px, 2.5vw, 18px);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  animation: fadeUpScale 0.8s ease-out both;
}

@keyframes fadeUpScale {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.hero-headline {
  font-size: clamp(28px, 6vw, 56px);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text-light);
  animation: fadeInUp 0.8s ease-out;
}

.hero-subheadline {
  font-size: clamp(16px, 3vw, 20px);
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 40px;
  line-height: 1.6;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* Inverted CTA button on gradient background */
.hero-cta {
  background-color: var(--text-light);
  color: var(--primary);
  border: none;
  padding: 14px 32px;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-cta:hover {
  background-color: var(--accent);
  color: var(--dark-bg);
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
}

/* ─── Scroll Reveal Base State ─── */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Pain Points Section ─── */
.pain-points {
  padding: 80px 20px;
  background-color: var(--light-gray);
}

.section-title {
  font-size: clamp(24px, 5vw, 44px);
  font-weight: 700;
  text-align: center;
  margin-bottom: 50px;
  color: var(--text-dark);
}

.pain-points-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.pain-point-card {
  background-color: var(--text-light);
  padding: 28px;
  border-radius: var(--border-radius);
  border: 1px solid #E8E8E8;
  transition: transform 0.3s ease-out, box-shadow 0.3s ease-out, border-color 0.3s ease-out;
}

.pain-point-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
  border-color: var(--accent);
}

.pain-icon {
  font-size: 32px;
  margin-bottom: 16px;
  display: block;
  text-align: center;
}

.pain-point-card p {
  font-size: 15px;
  line-height: 1.6;
  color: #555;
}

/* ─── Solution Section ─── */
.solution {
  padding: 80px 20px;
  background-color: var(--text-light);
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.solution-card {
  padding: 32px;
  border-radius: var(--border-radius);
  background-color: var(--text-light);
  border-left: 5px solid var(--primary);
  transition: transform 0.3s ease-out, box-shadow 0.3s ease-out, background 0.3s ease-out;
}

.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(61, 191, 184, 0.15);
  background: linear-gradient(135deg, rgba(61, 191, 184, 0.08) 0%, rgba(125, 221, 216, 0.04) 100%);
}

.solution-icon {
  font-size: 36px;
  margin-bottom: 16px;
  display: block;
  text-align: center;
}

.solution-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.solution-card p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

/* ─── Onboarding Section ─── */
.onboarding {
  padding: 80px 20px;
  background-color: var(--light-gray);
}

.onboarding-intro {
  text-align: center;
  font-size: 18px;
  color: #666;
  margin-bottom: 50px;
}

.onboarding-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.onboarding-card {
  background-color: var(--text-light);
  padding: 32px;
  border-radius: var(--border-radius);
  text-align: center;
  border: 2px solid transparent;
  transition: transform 0.3s ease-out, box-shadow 0.3s ease-out, border-color 0.3s ease-out;
}

.onboarding-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: 0 8px 24px rgba(61, 191, 184, 0.1);
}

.onboarding-number {
  width: 48px;
  height: 48px;
  background-color: var(--primary);
  color: var(--text-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  margin: 0 auto 16px;
}

.onboarding-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.onboarding-card p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

.onboarding-closing {
  text-align: center;
  font-size: 16px;
  color: #333;
  line-height: 1.7;
  max-width: 700px;
  margin: 0 auto;
}

/* ─── Who It's For Section ─── */
.who-for {
  padding: 80px 20px;
  background-color: var(--text-light);
  text-align: center;
}

.who-for-body {
  font-size: 18px;
  color: #666;
  max-width: 800px;
  margin: 0 auto 24px;
  line-height: 1.7;
}

.who-for-emphasis {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
  max-width: 800px;
  margin: 0 auto;
}

/* ─── Trust Section ─── */
.trust {
  padding: 60px 20px;
  background-color: var(--light-gray);
  text-align: center;
}

.trust-line {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-dark);
}

/* ─── Waitlist Section ─── */
.waitlist {
  padding: 100px 20px;
  background-color: var(--text-light);
  text-align: center;
}

.waitlist-body {
  font-size: 18px;
  color: #666;
  margin-bottom: 40px;
  line-height: 1.7;
}

.email-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 500px;
  margin: 0 auto 20px;
}

.email-input {
  padding: 14px 20px;
  border: 1px solid #DDD;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-family: 'Inter', sans-serif;
  transition: var(--transition);
}

.email-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(61, 191, 184, 0.1);
}

/* Pulse animation on primary CTA button */
.email-button {
  padding: 14px 32px;
  background-color: var(--primary);
  color: var(--text-light);
  border: none;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  animation: pulse 2s ease-in-out infinite;
  transition: background-color 0.3s ease-out, transform 0.3s ease-out, box-shadow 0.3s ease-out;
}

.email-button:hover {
  background-color: var(--dark-bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(61, 191, 184, 0.3);
  animation: none;
}

.form-message {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  min-height: 20px;
}

.form-fine-print {
  font-size: 14px;
  color: #999;
}

/* ─── Below CTA Section ─── */
.below-cta {
  padding: 60px 20px;
  background-color: var(--light-gray);
  text-align: center;
}

.below-cta-text {
  font-size: 16px;
  color: #666;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ─── Footer ─── */
.footer {
  background-color: var(--dark-bg);
  color: var(--text-light);
  padding: 40px 20px;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-branding {
  margin-bottom: 20px;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}

.footer-copyright {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
}

.footer-links {
  font-size: 13px;
}

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

.footer-links a:hover {
  color: var(--text-light);
  text-decoration: underline;
}

.footer-divider {
  color: rgba(255, 255, 255, 0.3);
  margin: 0 8px;
}

/* ─── Keyframe Animations ─── */
@keyframes heroGradient {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.03); }
  100% { transform: scale(1); }
}

/* ─── Responsive Design ─── */
@media (max-width: 768px) {
  .nav-container {
    padding: 12px 16px;
  }

  .nav-cta {
    padding: 8px 16px;
    font-size: 12px;
  }

  .logo-img {
    height: 30px;
  }

  .hero {
    padding: 60px 16px;
  }

  .hero-headline {
    font-size: 32px;
  }

  .hero-subheadline {
    font-size: 16px;
  }

  .section-title {
    font-size: 28px;
    margin-bottom: 40px;
  }

  .pain-points,
  .solution,
  .onboarding,
  .who-for,
  .trust,
  .waitlist,
  .below-cta {
    padding: 60px 16px;
  }

  .pain-points-grid,
  .solution-grid,
  .onboarding-grid {
    gap: 20px;
  }

  .pain-point-card,
  .solution-card,
  .onboarding-card {
    padding: 20px;
  }

  .email-form {
    max-width: 100%;
    flex-direction: column;
  }

  .email-input,
  .email-button {
    width: 100%;
  }

  .waitlist-body {
    font-size: 16px;
  }

  .footer-content {
    text-align: center;
  }

  /* Reduce scroll animation distance on mobile */
  .scroll-reveal {
    transform: translateY(15px);
  }
}

@media (max-width: 480px) {
  .nav-logo {
    font-size: 16px;
  }

  .hero-headline {
    font-size: 24px;
    line-height: 1.3;
  }

  .hero-subheadline {
    font-size: 14px;
  }

  .section-title {
    font-size: 22px;
  }

  .pain-points-grid,
  .solution-grid,
  .onboarding-grid {
    grid-template-columns: 1fr;
  }

  .pain-point-card,
  .solution-card,
  .onboarding-card {
    padding: 18px;
  }

  .onboarding-number {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }

  .waitlist {
    padding: 60px 16px;
  }

  .footer-title {
    font-size: 12px;
  }
}