:root {
  --color-bg: #F7F7F5;
  --color-surface: #FFFFFF;
  --color-primary: #1D4ED8;
  --color-primary-dark: #1E3A8A;
  --color-accent: #F59E0B;
  --color-text: #1F2937;
  --color-text-muted: #6B7280;
  --color-border: #E5E7EB;
  --color-danger: #DC2626;
  --radius: 14px;
  --max-width: 480px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  background: var(--color-primary);
  padding: 16px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  text-decoration: none;
  font-size: 18px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 8px;
}

.logo-text strong { font-weight: 800; }

.badge-secure {
  font-size: 12px;
  color: #fff;
  background: rgba(255,255,255,0.15);
  padding: 6px 10px;
  border-radius: 999px;
}

main.container {
  padding-top: 20px;
  padding-bottom: 40px;
}

.disclaimer-top {
  font-size: 12px;
  color: var(--color-text-muted);
  background: #F1F5F4;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 10px 12px;
  margin: 0 0 20px;
}

.hero { margin-bottom: 16px; }
.hero h1 { font-size: 24px; line-height: 1.25; margin: 0 0 8px; }
.hero-sub { font-size: 15px; color: var(--color-text-muted); margin: 0; }

.promo-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--color-accent), #FBBF24);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 20px;
}

.promo-tag {
  flex-shrink: 0;
  background: #1F2937;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .02em;
  padding: 4px 8px;
  border-radius: 999px;
}

.promo-text {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  color: #1F2937;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.hidden { display: none; }

.step-title {
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}

.field-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 14px 0 8px;
}

.operator-grid, .amount-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.operator-btn, .amount-btn {
  padding: 14px 10px;
  border-radius: 10px;
  border: 1.5px solid var(--color-border);
  background: #fff;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}

.operator-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 56px;
  padding: 8px 14px;
}

.operator-logo {
  max-width: 100%;
  max-height: 32px;
  object-fit: contain;
}

.operator-btn[aria-checked="true"],
.amount-btn[aria-checked="true"] {
  border-color: var(--color-primary);
  background: #EAF0FE;
  color: var(--color-primary-dark);
}

.phone-input {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
}

.phone-prefix {
  padding: 12px 10px;
  background: #F3F4F6;
  font-size: 14px;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.phone-input input, .custom-amount, .text-input, #pix-copypaste {
  border: none;
  outline: none;
  padding: 13px 12px;
  font-size: 16px;
  width: 100%;
  background: transparent;
  color: var(--color-text);
}

.custom-amount, .text-input {
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  width: 100%;
}

.custom-amount:focus, .text-input:focus, .phone-input:focus-within {
  border-color: var(--color-primary);
  outline: none;
}

.text-input.invalid {
  border-color: var(--color-danger);
}

.text-input.valid {
  border-color: #16A34A;
}

.field-error {
  font-size: 12px;
  color: var(--color-danger);
  margin: 6px 0 0;
}

.field-hint {
  font-size: 12px;
  color: var(--color-text-muted);
  margin: 6px 0 0;
}

.order-bump {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 16px;
  padding: 14px;
  border: 1.5px dashed var(--color-primary);
  border-radius: 10px;
  background: #EFF4FE;
  cursor: pointer;
}

.order-bump input {
  margin-top: 3px;
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.order-bump-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 13px;
}

.order-bump-text strong {
  font-size: 14px;
  color: var(--color-text);
}

.order-bump-text span {
  color: var(--color-primary-dark);
  font-weight: 600;
}

.upsell-box {
  text-align: center;
  padding: 8px 0;
}

.upsell-tag {
  display: inline-block;
  background: var(--color-accent);
  color: #1F2937;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.upsell-title {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
}

.upsell-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  margin: 0 0 4px;
}

.order-summary {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 18px;
  font-size: 13px;
}

.order-summary .summary-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  color: var(--color-text-muted);
}

.order-summary .summary-row.total {
  border-top: 1px solid var(--color-border);
  margin-top: 6px;
  padding-top: 8px;
  font-weight: 700;
  color: var(--color-text);
  font-size: 15px;
}

.btn-primary, .btn-secondary, .btn-copy {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  margin-top: 18px;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:disabled {
  background: #A8B8E8;
  cursor: not-allowed;
}

.btn-primary:not(:disabled):active { background: var(--color-primary-dark); }

.btn-secondary {
  background: transparent;
  color: var(--color-text-muted);
  border: 1.5px solid var(--color-border);
  margin-top: 10px;
}

.pix-qrcode {
  display: block;
  width: 200px;
  height: 200px;
  margin: 0 auto 16px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
}

.copy-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.copy-row input {
  flex: 1;
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  font-size: 13px;
}

.btn-copy {
  width: auto;
  margin-top: 0;
  padding: 0 16px;
  background: var(--color-accent);
  color: #1F2937;
  white-space: nowrap;
}

.pix-status {
  text-align: center;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 16px;
}

.error-text {
  color: var(--color-danger);
  font-size: 14px;
}

#pix-success {
  text-align: center;
  padding: 12px 0 4px;
}

.success-check {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.success-title {
  font-size: 19px;
  margin: 0 0 8px;
}

.success-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  margin: 0;
}

.success-order {
  font-size: 12px;
  color: var(--color-text-muted);
  margin: 8px 0 20px;
}

.disclaimer-bottom {
  font-size: 12px;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 24px;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 24px 0 32px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  margin-bottom: 14px;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer-note, .footer-copy {
  font-size: 11px;
  color: var(--color-text-muted);
  margin: 6px 0;
}

@media (min-width: 640px) {
  .hero h1 { font-size: 28px; }
  .card { padding: 24px; }
}