:root {
  color-scheme: dark;
  --bg: #05070c;
  --surface: #0b1220;
  --surface-soft: #101928;
  --ink: #f5f7fb;
  --muted: #a8b3c4;
  --line: #213047;
  --line-active: #00b8e6;
  --accent: #00c7f2;
  --accent-dark: #0876d7;
  --warning-bg: #241d0c;
  --warning-line: #8a6a20;
  --warning-text: #f4d27a;
  --radius: 4px;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.45;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 30;
  transform: translateY(-160%);
  background: var(--ink);
  color: #05070c;
  padding: 9px 12px;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 7, 12, 0.94);
  backdrop-filter: blur(12px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: calc(100% - 32px);
  max-width: var(--max);
  margin: 0 auto;
  padding: 10px 0;
  gap: 18px;
}

.brand,
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  background: #000;
  object-fit: cover;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 0.96rem;
}

.brand small {
  color: var(--muted);
  font-size: 0.76rem;
}

.nav-actions a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.nav-actions .whatsapp-link {
  border: 1px solid var(--line-active);
  color: var(--accent);
  padding: 8px 10px;
}

.checkout-section,
.info-band,
.faq,
.footer {
  width: calc(100% - 32px);
  max-width: var(--max);
  margin: 0 auto;
}

.checkout-section {
  padding: 26px 0 32px;
}

.page-title {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 460px;
  align-items: end;
  gap: 24px;
  margin-bottom: 18px;
}

.section-label {
  display: block;
  margin-bottom: 7px;
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 660px;
  margin-bottom: 8px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.page-title p,
.section-heading p,
.panel-heading p {
  color: var(--muted);
}

.page-title p {
  max-width: 720px;
  margin-bottom: 0;
}

.quick-info {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  border: 1px solid var(--line);
  background: var(--surface);
}

.quick-info div {
  padding: 12px;
}

.quick-info div + div {
  border-left: 1px solid var(--line);
}

.quick-info dt {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
}

.quick-info dd {
  margin: 3px 0 0;
  font-size: 0.94rem;
  font-weight: 700;
}

.checkout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  align-items: start;
  gap: 14px;
}

.plans-panel,
.summary-card,
.info-band article,
details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.plans-panel,
.summary-card {
  padding: 16px;
}

.panel-heading {
  margin-bottom: 12px;
}

.panel-heading h2 {
  margin-bottom: 3px;
  font-size: 1.05rem;
}

.panel-heading p {
  margin-bottom: 0;
  font-size: 0.9rem;
}

.panel-heading-inline {
  margin-top: 14px;
}

.billing-toggle {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.billing-toggle button {
  min-height: 62px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
  color: var(--ink);
  padding: 11px 12px;
  text-align: left;
  cursor: pointer;
}

.billing-toggle button strong,
.billing-toggle button span {
  display: block;
}

.billing-toggle button span {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.78rem;
}

.billing-toggle button.is-active {
  border-color: var(--line-active);
  background: #092133;
}

.plan-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.plan-card {
  display: flex;
  min-height: 112px;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
  padding: 13px;
  cursor: pointer;
}

.plan-card:hover,
.plan-card:focus-visible {
  border-color: #315073;
  outline: 0;
}

.plan-card.is-selected {
  border-color: var(--line-active);
  background: #08243a;
}

.plan-main {
  display: flex;
  min-width: 0;
  gap: 10px;
}

.radio-dot {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  margin-top: 3px;
  border: 1px solid #5a6c83;
  border-radius: 999px;
}

.plan-card.is-selected .radio-dot {
  border: 4px solid var(--accent);
}

.plan-card h3 {
  margin-bottom: 3px;
  font-size: 1rem;
}

.plan-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.plan-card strong {
  flex: 0 0 auto;
  color: var(--accent);
  font-size: 1.05rem;
}

.summary-card {
  position: sticky;
  top: 76px;
}

.summary-list {
  margin: 0;
  padding: 2px 0 10px;
}

.buyer-fields {
  display: grid;
  gap: 9px;
  margin-bottom: 12px;
}

.buyer-fields label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.buyer-fields input {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
  color: var(--ink);
  padding: 0 10px;
  font: inherit;
}

.buyer-fields input:focus {
  border-color: var(--line-active);
  outline: 0;
}

.buyer-fields input::placeholder {
  color: #64748b;
}

.summary-list div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
}

.summary-list dt {
  color: var(--muted);
  font-weight: 700;
}

.summary-list dd {
  margin: 0;
  text-align: right;
  font-weight: 700;
}

.summary-total dd {
  color: var(--accent);
  font-size: 1.45rem;
}

.notice {
  display: grid;
  gap: 4px;
  margin: 10px 0 12px;
  border: 1px solid var(--warning-line);
  border-radius: var(--radius);
  background: var(--warning-bg);
  color: var(--warning-text);
  padding: 10px;
  font-size: 0.84rem;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: var(--radius);
  padding: 0 16px;
  font-weight: 700;
  cursor: pointer;
}

.button-pay {
  width: 100%;
  background: var(--accent-dark);
  color: #fff;
}

.button-pay:hover {
  background: #0a8df5;
}

.payment-help {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  text-align: center;
}

.payment-help code {
  border: 1px solid var(--line);
  background: var(--surface-soft);
  padding: 1px 4px;
  color: var(--ink);
}

.info-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 8px 0 30px;
}

.info-band article {
  padding: 15px;
}

.info-band h2 {
  margin-bottom: 6px;
  font-size: 1rem;
}

.info-band p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.faq {
  padding: 20px 0 38px;
}

.section-heading {
  margin-bottom: 14px;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: 1.7rem;
}

.faq-list {
  display: grid;
  gap: 8px;
}

details {
  padding: 13px 15px;
}

summary {
  cursor: pointer;
  font-weight: 700;
}

details p {
  margin: 10px 0 0;
  color: var(--muted);
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding: 22px 0 30px;
  color: var(--muted);
  gap: 14px;
  font-size: 0.9rem;
}

.footer p {
  margin: 0;
}

.footer a {
  color: var(--accent);
  font-weight: 700;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  max-width: min(360px, calc(100vw - 36px));
  transform: translateY(130%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  padding: 12px 14px;
  opacity: 0;
  transition:
    transform 180ms ease,
    opacity 180ms ease;
}

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

.status-page {
  display: grid;
  width: min(100% - 32px, 620px);
  min-height: 100vh;
  align-content: center;
  justify-items: start;
  margin: 0 auto;
  padding: 40px 0;
}

.status-logo {
  width: 76px;
  height: 76px;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  object-fit: cover;
}

.status-page h1 {
  margin-bottom: 12px;
}

.status-page p {
  max-width: 540px;
  color: var(--muted);
}

.status-page .button {
  margin-top: 10px;
}

.mobile-pay-bar {
  display: none;
}

@media (max-width: 940px) {
  .page-title,
  .checkout-grid {
    grid-template-columns: 1fr;
  }

  .quick-info {
    max-width: 620px;
  }

  .summary-card {
    position: static;
  }
}

@media (max-width: 720px) {
  body {
    padding-bottom: 76px;
  }

  .nav,
  .checkout-section,
  .info-band,
  .faq,
  .footer {
    width: calc(100% - 24px);
  }

  .nav-actions a:not(.whatsapp-link) {
    display: none;
  }

  .checkout-section {
    padding-top: 18px;
  }

  h1 {
    font-size: clamp(1.75rem, 9vw, 2.45rem);
  }

  .quick-info,
  .plan-list,
  .info-band {
    grid-template-columns: 1fr;
  }

  .quick-info {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .quick-info div {
    padding: 9px;
  }

  .quick-info div + div {
    border-top: 0;
    border-left: 1px solid var(--line);
  }

  .quick-info dt {
    font-size: 0.68rem;
  }

  .quick-info dd {
    font-size: 0.8rem;
  }

  .plan-card {
    min-height: 92px;
  }

  .mobile-pay-bar {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 35;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 128px;
    align-items: center;
    gap: 12px;
    border-top: 1px solid var(--line);
    background: rgba(5, 7, 12, 0.96);
    padding: 10px 12px;
  }

  .mobile-pay-bar span,
  .mobile-pay-bar strong {
    display: block;
  }

  .mobile-pay-bar span {
    color: var(--muted);
    font-size: 0.78rem;
  }

  .mobile-pay-bar strong {
    color: var(--accent);
    font-size: 1.05rem;
  }

  .mobile-pay-bar .button {
    min-height: 42px;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 430px) {
  .brand-logo {
    width: 38px;
    height: 38px;
  }

  .brand small {
    display: none;
  }

  .plans-panel,
  .summary-card {
    padding: 13px;
  }

  .plan-card strong {
    font-size: 1rem;
  }
}