/* ---- Reset & Base ---- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #2A9D8F;
  --primary-dark: #238578;
  --accent: #F4A261;
  --bg: #FAF7F2;
  --surface: #FFFFFF;
  --text: #2D3436;
  --text-light: #636E72;
  --radius: 12px;
  --radius-sm: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Nunito', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  line-height: 1.2;
}

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

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 32px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.9rem;
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.1rem;
}

/* ---- Nav ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--primary);
}

/* ---- Hero ---- */
.hero {
  padding: 140px 0 80px;
  text-align: center;
}

.hero-inner {
  max-width: 640px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--text-light);
  margin-bottom: 36px;
  line-height: 1.7;
}

/* ---- Problem ---- */
.problem {
  padding: 64px 0;
  text-align: center;
}

.stat {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}

.problem-text {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---- How It Works ---- */
.how-it-works {
  padding: 80px 0;
}

.how-it-works h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 48px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step {
  background: var(--surface);
  padding: 32px 24px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step p {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ---- Differentiators ---- */
.diff {
  padding: 80px 0;
}

.diff h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 48px;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.diff-card {
  background: var(--surface);
  padding: 28px 24px;
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.diff-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.diff-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.diff-card p {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ---- Waitlist ---- */
.waitlist {
  padding: 80px 0;
  text-align: center;
}

.waitlist h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.waitlist > .container > p {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 32px;
}

.waitlist-form {
  display: flex;
  gap: 12px;
  max-width: 460px;
  margin: 0 auto;
}

.waitlist-form input {
  flex: 1;
  padding: 14px 18px;
  font-family: 'Nunito', sans-serif;
  font-size: 1rem;
  border: 2px solid #E0DCD5;
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

.waitlist-form input::placeholder {
  color: #B2BEC3;
}

.waitlist-form input:focus {
  border-color: var(--primary);
}

/* ---- Footer ---- */
.footer {
  padding: 32px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer p {
  font-size: 0.85rem;
  color: var(--text-light);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-light);
  transition: color 0.2s;
}

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

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .hero {
    padding: 110px 0 60px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-sub {
    font-size: 1.05rem;
  }

  .stat {
    font-size: 1.4rem;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .diff-grid {
    grid-template-columns: 1fr;
  }

  .waitlist-form {
    flex-direction: column;
  }

  .waitlist-form input,
  .waitlist-form .btn {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .how-it-works h2,
  .diff h2,
  .waitlist h2 {
    font-size: 1.6rem;
  }
}