@font-face {
  font-family: "Rehab Plex";
  src: url("assets/fonts/IBMPLEXSANS-REGULAR.TTF") format("truetype");
  font-weight: 400;
}

@font-face {
  font-family: "Rehab Plex";
  src: url("assets/fonts/IBMPLEXSANS-BOLD.TTF") format("truetype");
  font-weight: 700;
}

:root {
  color-scheme: dark;
  --ink: #070b12;
  --panel: #0c1420;
  --panel-2: #101a29;
  --paper: #f7fbff;
  --muted: rgba(247, 251, 255, 0.66);
  --blue: #3366ff;
  --green: #17e316;
  --danger: #ff5449;
  --line: rgba(51, 102, 255, 0.34);
  --grid-line: rgba(51, 102, 255, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Rehab Plex", Arial, sans-serif;
  background:
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    linear-gradient(0deg, var(--grid-line) 1px, transparent 1px),
    var(--ink);
  background-size: 48px 48px, 48px 48px, auto;
  color: var(--paper);
}

button, input {
  font: inherit;
}

.checkout-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
  gap: clamp(24px, 5vw, 72px);
  min-height: 100vh;
  padding: clamp(18px, 4vw, 58px);
  align-items: center;
}

.brand img {
  width: 186px;
  mix-blend-mode: screen;
}

.checkout-copy {
  max-width: 780px;
}

.eyebrow {
  margin: 58px 0 16px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "/ ";
  color: var(--green);
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(38px, 6.6vw, 86px);
  line-height: 0.96;
  letter-spacing: 0;
  text-transform: uppercase;
}

.checkout-copy p {
  max-width: 680px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.45;
}

.promise-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.promise-row span {
  border: 1px solid var(--line);
  padding: 10px 12px;
  color: var(--paper);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.checkout-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.44);
  padding: clamp(20px, 3vw, 34px);
}

form {
  display: grid;
  gap: 18px;
}

.payment-status {
  display: grid;
  gap: 12px;
  margin-bottom: 22px;
  border: 1px solid rgba(23, 227, 22, 0.48);
  background: rgba(23, 227, 22, 0.1);
  padding: 18px;
}

.payment-status.is-pending {
  border-color: var(--line);
  background: rgba(51, 102, 255, 0.1);
}

.payment-status.is-failed {
  border-color: rgba(255, 84, 73, 0.52);
  background: rgba(255, 84, 73, 0.1);
}

.payment-status h2 {
  margin: 0;
  font-size: 28px;
  line-height: 1.05;
  text-transform: uppercase;
}

.payment-status p {
  margin: 0;
  color: var(--muted);
}

.status-link {
  display: inline-flex;
  width: fit-content;
  margin-top: 6px;
  padding: 12px 16px;
  background: var(--green);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

form.is-status-mode {
  opacity: 0.42;
}

.tariff-switch {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.tariff-switch label,
.payment-method label {
  cursor: pointer;
}

.tariff-switch input,
.payment-method input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.tariff-switch span,
.payment-method span {
  display: grid;
  gap: 8px;
  min-height: 104px;
  border: 1px solid var(--line);
  padding: 14px;
  background: rgba(51, 102, 255, 0.08);
}

.tariff-switch strong,
.tariff-switch em,
.payment-method strong,
.payment-method em {
  font-style: normal;
}

.tariff-switch strong,
.payment-method strong {
  text-transform: uppercase;
}

.tariff-switch em,
.payment-method em {
  align-self: end;
  color: var(--green);
  font-size: 24px;
  font-weight: 700;
}

.tariff-switch input:checked + span,
.payment-method input:checked + span {
  border-color: var(--green);
  background: rgba(23, 227, 22, 0.12);
}

.payment-method {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.payment-method span {
  min-height: 88px;
}

.payment-method em {
  font-size: 15px;
}

label > span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

input {
  width: 100%;
  border: 0;
  border-bottom: 1px solid rgba(51, 102, 255, 0.56);
  padding: 12px 2px;
  background: transparent;
  color: var(--paper);
}

input::placeholder {
  color: rgba(247, 251, 255, 0.38);
}

input:focus {
  outline: 2px solid var(--green);
  outline-offset: 4px;
}

.installment-fields {
  display: grid;
  gap: 16px;
  border: 1px solid rgba(23, 227, 22, 0.42);
  background: rgba(23, 227, 22, 0.08);
  padding: 18px;
}

.installment-fields[hidden] {
  display: none;
}

.installment-fields h2 {
  margin: 0;
  font-size: 24px;
  line-height: 1.1;
  text-transform: uppercase;
}

.installment-fields p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.agreement-check {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 12px;
  align-items: start;
  border: 1px solid var(--line);
  background: rgba(7, 11, 18, 0.34);
  padding: 14px;
}

.agreement-check input {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  accent-color: var(--green);
}

.agreement-check > span {
  margin: 0;
  color: var(--paper);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.45;
  text-transform: none;
}

.quote-box {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  padding: 16px;
}

.quote-box div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
}

.quote-box strong {
  color: var(--paper);
  font-size: 18px;
}

.quote-box .total-row {
  border-top: 1px solid var(--line);
  padding-top: 12px;
  color: var(--paper);
}

.quote-box .total-row strong {
  color: var(--green);
  font-size: 32px;
}

.installment-schedule {
  display: grid !important;
  gap: 8px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.installment-schedule[hidden] {
  display: none !important;
}

.installment-schedule > span {
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.installment-schedule div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
}

button {
  border: 0;
  padding: 15px 22px;
  background: var(--green);
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

button:disabled {
  opacity: 0.55;
  cursor: wait;
}

.form-note {
  min-height: 42px;
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
}

.form-note.is-error {
  color: #ffb8b2;
}

.form-note.is-success {
  color: var(--green);
}

@media (max-width: 860px) {
  .checkout-shell {
    grid-template-columns: 1fr;
    align-items: start;
  }

  h1 {
    font-size: 38px;
  }

  .checkout-copy p {
    font-size: 17px;
  }
}

@media (max-width: 460px) {
  .tariff-switch,
  .payment-method {
    grid-template-columns: 1fr;
  }

  .installment-schedule div,
  .quote-box div {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }
}