/* CSS Variables */
:root {
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-900: #111827;
  --white: #ffffff;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--white);
  color: var(--gray-900);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.min-h-screen {
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Hero Section */
.hero-section {
  position: relative;
  overflow: hidden;
  background: linear-gradient(to bottom, var(--white), var(--gray-50));
}

.hero-container {
  padding: 4rem 1rem;
}

@media (min-width: 1024px) {
  .hero-container {
    padding: 6rem 1rem;
  }
}

.hero-grid {
  display: grid;
  gap: 3rem;
  align-items: start;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1.0;
  letter-spacing: -0.025em;
  color: var(--gray-900);
}

.hero-title br {
  display: block;
  margin: -0.3em 0;
  line-height: 0;
  height: 0;
  content: "";
}

@media (min-width: 640px) {
  .hero-title {
    font-size: 3.75rem;
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: 4.5rem;
  }
}

.hero-description {
  margin-top: 1.5rem;
  font-size: 1.25rem;
  line-height: 1.75;
  color: var(--gray-600);
}

@media (min-width: 640px) {
  .hero-description {
    font-size: 1.5rem;
  }
}

.purchase-card-wrapper {
  position: sticky;
  top: 2rem;
}

.purchase-card {
  border-radius: 1.5rem;
  background: var(--white);
  padding: 2rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--gray-100);
}

.purchase-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-900);
}

.form-group {
  margin-top: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  height: 3rem;
  border-radius: 0.75rem;
  border: 1px solid var(--gray-200);
  padding: 0 0.75rem;
  font-size: 1rem;
  color: var(--gray-900);
  transition: all 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--blue-600);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-hint {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--gray-500);
}

.regions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  margin-top: 0.75rem;
}

@media (min-width: 640px) {
  .regions-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.region-btn {
  border-radius: 0.75rem;
  border: 2px solid var(--gray-200);
  padding: 0.75rem;
  text-align: center;
  background: var(--white);
  cursor: pointer;
  transition: all 0.2s;
}

.region-btn:hover {
  border-color: var(--gray-300);
  transform: scale(1.05);
}

.region-btn.active {
  border-color: var(--blue-600);
  background: var(--blue-50);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.region-flag {
  font-size: 1.875rem;
}

.region-name {
  margin-top: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
}

.region-btn.active .region-name {
  color: var(--blue-600);
}

.region-currency {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.regions-details {
  margin-top: 0.75rem;
}

.regions-summary {
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--blue-600);
}

.regions-summary:hover {
  color: var(--blue-700);
}

.denominations-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.denomination-btn {
  border-radius: 0.75rem;
  border: 2px solid var(--gray-200);
  padding: 1rem;
  text-align: center;
  background: var(--white);
  cursor: pointer;
  transition: all 0.2s;
}

.denomination-btn:hover {
  border-color: var(--gray-300);
  transform: scale(1.05);
}

.denomination-btn.active {
  border-color: var(--blue-600);
  background: var(--blue-50);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.denomination-amount {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
}

.denomination-btn.active .denomination-amount {
  color: var(--blue-600);
}

.purchase-summary {
  margin-top: 2rem;
}

.summary-card {
  border-radius: 1rem;
  background: linear-gradient(to bottom right, var(--blue-50), var(--blue-100));
  padding: 1.5rem;
}

.summary-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.summary-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
}

.summary-total {
  margin-top: 0.25rem;
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--blue-600);
}

.summary-nominal {
  text-align: right;
}

.summary-nominal-label {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.summary-nominal-value {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-700);
}

.purchase-button {
  margin-top: 1rem;
  width: 100%;
  height: 3.5rem;
  border-radius: 0.75rem;
  border: none;
  background: var(--blue-600);
  color: var(--white);
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.purchase-button:hover {
  background: var(--blue-700);
}

.purchase-hint {
  margin-top: 0.75rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--gray-500);
}

.purchase-link {
  color: var(--blue-600);
  text-decoration: none;
}

.purchase-link:hover {
  text-decoration: underline;
}

/* Benefits Section */
.benefits-section {
  background: var(--white);
  padding: 6rem 0;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 600;
  text-align: center;
  letter-spacing: -0.025em;
  color: var(--gray-900);
  margin-bottom: 4rem;
}

@media (min-width: 640px) {
  .section-title {
    font-size: 3rem;
  }
}

.benefits-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .benefits-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.benefit-card {
  border-radius: 1.5rem;
  background: var(--white);
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--gray-100);
  transition: all 0.3s;
}

.benefit-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.benefit-icon {
  display: flex;
  height: 3rem;
  width: 3rem;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--blue-100);
  color: var(--blue-600);
}

.benefit-title {
  margin-top: 1.5rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
}

.benefit-description {
  margin-top: 0.75rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--gray-600);
}

/* How It Works Section */
.how-it-works-section {
  background: var(--gray-50);
  padding: 6rem 0;
}

.steps-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step-item {
  text-align: center;
}

.step-number {
  margin: 0 auto;
  display: flex;
  height: 4rem;
  width: 4rem;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--blue-600);
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 700;
}

.step-title {
  margin-top: 1.5rem;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-900);
}

.step-description {
  margin-top: 1rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--gray-600);
}

/* FAQ Section */
.faq-section {
  background: var(--white);
  padding: 6rem 0;
}

.faq-container {
  max-width: 48rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid var(--gray-200);
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 0;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-900);
  cursor: pointer;
  transition: color 0.2s;
}

.faq-trigger:hover {
  color: var(--blue-600);
}

.faq-icon {
  width: 1rem;
  height: 1rem;
  transition: transform 0.2s;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding-bottom: 0;
}

.faq-item.active .faq-content {
  max-height: 500px;
  padding-bottom: 1.5rem;
}

.faq-content p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--gray-600);
}

/* Support Section */
.support-section {
  background: var(--gray-50);
  padding: 6rem 0;
}

.support-card {
  max-width: 36rem;
  margin: 0 auto;
  text-align: center;
  border-radius: 1.5rem;
  background: var(--white);
  padding: 3rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--gray-100);
}

.support-title {
  font-size: 1.875rem;
  font-weight: 600;
  color: var(--gray-900);
}

.support-description {
  margin-top: 1rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--gray-600);
}

.support-button {
  margin-top: 2rem;
  height: 3rem;
  padding: 0 2rem;
  border-radius: 0.75rem;
  border: none;
  background: var(--blue-600);
  color: var(--white);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.support-button:hover {
  background: var(--blue-700);
}

/* Footer */
.footer {
  border-top: 1px solid var(--gray-200);
  background: var(--white);
  padding: 3rem 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .footer-content {
    flex-direction: row;
  }
}

.footer-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  font-size: 0.875rem;
}

.footer-link {
  color: var(--gray-600);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--blue-600);
}

.footer-bottom {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--gray-500);
}