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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: #0F172A;
  color: #F1F5F9;
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  min-height: 100vh;
}

/* ===== Container ===== */
.container {
  max-width: 1024px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.15;
  color: #F1F5F9;
}

h1 {
  font-size: 2rem;
  font-weight: 800;
}

h2 {
  font-size: 1.75rem;
  text-align: center;
  margin-bottom: 48px;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

p {
  color: #94A3B8;
  line-height: 1.6;
}

/* ===== Hero ===== */
.hero {
  padding: 80px 0 64px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background-color: rgba(59, 130, 246, 0.15);
  color: #60A5FA;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 9999px;
  margin-bottom: 24px;
}

.hero h1 {
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 1.125rem;
  max-width: 560px;
  margin: 0 auto 40px;
}

/* ===== Checkout Form ===== */
.checkout-form {
  background-color: #1E293B;
  border: 1px solid #334155;
  border-radius: 12px;
  padding: 32px;
  max-width: 480px;
  margin: 0 auto;
  text-align: left;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: #E2E8F0;
  margin-bottom: 6px;
}

.form-group input {
  display: block;
  width: 100%;
  padding: 12px 16px;
  background-color: #334155;
  border: 1px solid #475569;
  border-radius: 8px;
  color: #F1F5F9;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input::placeholder {
  color: #64748B;
}

.form-group input:focus {
  outline: none;
  border-color: #3B82F6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-block;
  width: 100%;
  padding: 14px 24px;
  background-color: #F59E0B;
  color: #0F172A;
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn-primary:hover {
  background-color: #D97706;
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:focus-visible {
  outline: 2px solid #F59E0B;
  outline-offset: 2px;
}

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

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.step {
  text-align: center;
  padding: 32px 24px;
  background-color: #1E293B;
  border: 1px solid #334155;
  border-radius: 12px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: rgba(245, 158, 11, 0.15);
  color: #F59E0B;
  font-size: 1.25rem;
  font-weight: 800;
  border-radius: 50%;
  margin-bottom: 16px;
}

.step h3 {
  color: #F1F5F9;
}

/* ===== What You Get ===== */
.what-you-get {
  padding: 80px 0;
}

.features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.feature {
  background-color: #1E293B;
  border: 1px solid #334155;
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature h3 {
  color: #F1F5F9;
}

/* ===== Pricing ===== */
.pricing {
  padding: 80px 0;
}

.price-card {
  max-width: 400px;
  margin: 0 auto;
  background-color: #1E293B;
  border: 2px solid #334155;
  border-radius: 16px;
  padding: 48px 32px;
  text-align: center;
}

.price-tag {
  font-size: 3.5rem;
  font-weight: 800;
  color: #F59E0B;
  line-height: 1;
  margin-bottom: 4px;
}

.price-label {
  font-size: 0.875rem;
  color: #64748B;
  margin-bottom: 32px;
}

.price-features {
  list-style: none;
  text-align: left;
  margin-bottom: 32px;
}

.price-features li {
  position: relative;
  padding: 8px 0 8px 28px;
  color: #E2E8F0;
  font-size: 0.9375rem;
}

.price-features li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: #10B981;
  font-weight: 700;
}

.pricing .btn-primary {
  width: auto;
  padding: 14px 40px;
}

/* ===== Footer ===== */
footer {
  padding: 48px 0;
  border-top: 1px solid #1E293B;
  text-align: center;
}

.footer-brand {
  font-size: 1.125rem;
  font-weight: 700;
  color: #F1F5F9;
  margin-bottom: 4px;
}

.footer-company {
  font-size: 0.875rem;
  color: #64748B;
  margin-bottom: 4px;
}

.footer-contact {
  font-size: 0.875rem;
  color: #64748B;
}

/* ===== Responsive: Tablet+ ===== */
@media (min-width: 768px) {
  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.25rem;
  }

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

  .features {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== Responsive: Desktop ===== */
@media (min-width: 1024px) {
  .container {
    padding: 0 32px;
  }

  .hero {
    padding: 120px 0 80px;
  }

  .hero-sub {
    font-size: 1.25rem;
  }
}

/* ===== Focus & Accessibility ===== */
:focus-visible {
  outline: 2px solid #3B82F6;
  outline-offset: 2px;
}

a:focus-visible {
  outline: 2px solid #F59E0B;
  outline-offset: 2px;
}

/* ===== Selection ===== */
::selection {
  background-color: rgba(59, 130, 246, 0.3);
  color: #F1F5F9;
}