.billing-main {
  background: var(--surface);
  padding: 72px 0 80px;
}

.billing-main > .container {
  width: min(1536px, calc(100% - 48px));
}

.billing-intro {
  max-width: 780px;
  margin: 0 auto 32px;
  text-align: center;
}

.billing-intro h1 {
  margin: 0 0 16px;
  color: var(--secondary);
  font-family: "Poppins-Bold", Arial, sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
}

.billing-intro p {
  margin: 0;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.6;
}

.billing-selection {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.visually-hidden,
.billing-cycle-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.billing-cycle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 0 0 32px;
  font-size: 14px;
}

.billing-cycle label {
  cursor: pointer;
}

.billing-switch {
  position: relative;
  width: 42px;
  height: 24px;
  border-radius: 12px;
  background: #b7dbdd;
}

.billing-switch-to-month,
#billing-year:checked ~ .billing-cycle .billing-switch-to-year {
  display: none;
}

#billing-year:checked ~ .billing-cycle .billing-switch-to-month {
  display: block;
}

.billing-switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.24);
  transition: transform 150ms ease;
}

#billing-year:checked ~ .billing-cycle .billing-switch::after {
  transform: translateX(18px);
}

#billing-month:focus-visible ~ .billing-cycle label[for="billing-month"],
#billing-year:focus-visible ~ .billing-cycle label[for="billing-year"] {
  outline: 2px solid var(--secondary);
  outline-offset: 4px;
}

.billing-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: stretch;
}

.billing-card {
  flex: 1 1 calc(20% - 12px);
  min-width: 280px;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--primary);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 3px 5px -1px rgba(0, 0, 0, 0.2), 0 6px 10px rgba(0, 0, 0, 0.14), 0 1px 18px rgba(0, 0, 0, 0.12);
}

.billing-card-content {
  flex: 1;
  padding: 16px;
}

.billing-card h2 {
  margin: 0 0 4px;
  color: var(--ink);
  font-family: "Poppins-Bold", Arial, sans-serif;
  font-size: 18px;
  line-height: 1.33;
  font-weight: 700;
}

.billing-price {
  margin: 0 0 32px;
  color: var(--ink);
  font-family: "Poppins-Bold", Arial, sans-serif;
  font-size: 20px;
  line-height: 1.235;
  font-weight: 700;
}

.billing-price-year {
  display: none;
}

#billing-year:checked ~ .billing-grid .billing-price-month {
  display: none;
}

#billing-year:checked ~ .billing-grid .billing-price-year {
  display: block;
}

.billing-features {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: #374151;
  font-size: 14px;
  line-height: 20px;
}

.billing-features li {
  position: relative;
  min-height: 20px;
  padding-left: 24px;
}

.billing-features li::before {
  content: "\2713";
  position: absolute;
  top: 0;
  left: 0;
  width: 20px;
  color: #10b981;
  font: 20px/20px Arial, sans-serif;
}

.billing-card-actions {
  padding: 0 16px 16px;
}

.billing-select {
  display: block;
  width: 100%;
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid var(--primary);
  border-radius: 20px;
  background: #fff;
  color: var(--secondary);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.75;
  text-decoration: none;
  text-transform: capitalize;
  text-align: center;
}

.billing-select:hover {
  border-color: var(--secondary);
  background: rgba(30, 53, 95, 0.04);
}

.billing-heading {
  display: flex;
  align-items: flex-start;
  gap: 4px;
}

.billing-apartment {
  width: 24px;
  height: 24px;
  fill: currentColor;
  flex: none;
}

.billing-premise {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.43;
}

.billing-alert {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 6px 16px;
  border-radius: 8px;
  background: #e5f6fd;
  color: #014361;
  font-size: 14px;
  line-height: 1.43;
  text-decoration: none;
}

.billing-alert:hover {
  background: rgba(84, 189, 193, 0.25);
}

.billing-info-icon {
  display: inline-grid;
  width: 20px;
  height: 20px;
  place-items: center;
  border: 2px solid currentColor;
  border-radius: 50%;
  font: bold 13px/1 Arial, sans-serif;
  flex: none;
}

.billing-note {
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  text-align: center;
}

.billing-nav {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.billing-nav a[aria-current="page"] {
  color: var(--secondary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.billing-languages {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.85rem;
}

.billing-languages a {
  text-transform: uppercase;
}

a:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 4px;
}

@media (max-width: 900px) {
  .billing-card { flex-basis: calc(50% - 12px); }
}

@media (max-width: 550px) {
  .billing-main { padding: 48px 0 56px; }
  .billing-main > .container { width: calc(100% - 28px); }
  .billing-card { flex-basis: 100%; }
}