:root {
  --bg: #070a10;
  --panel: #101722;
  --panel-2: #151e2b;
  --border: #253246;
  --text: #edf2fb;
  --muted: #95a3b8;
  --accent: #818cf8;
  --money: #34d399;
  --warn: #fbbf24;
  --danger: #fb7185;
  --shadow: 0 30px 80px -32px rgba(0, 0, 0, .82);
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: clip;
  color: var(--text);
  font-family: var(--font-sans);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  background:
    radial-gradient(900px 520px at 80% -10%, rgba(129, 140, 248, .18), transparent 60%),
    radial-gradient(760px 520px at 4% 12%, rgba(52, 211, 153, .10), transparent 54%),
    var(--bg);
}

.shell {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(20px, 5vw, 42px) 0 clamp(28px, 6vw, 56px);
}

.hero,
.results {
  border: 1px solid var(--border);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.012)), var(--panel);
  box-shadow: var(--shadow);
}

.hero {
  padding: clamp(24px, 5vw, 44px);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.12;
  letter-spacing: -.04em;
}

h1 {
  max-width: 780px;
  font-size: clamp(34px, 7vw, 68px);
}

h2 { font-size: clamp(24px, 4vw, 36px); }
h3 { font-size: 17px; }

.lead {
  max-width: 620px;
  margin: 18px 0 28px;
  color: var(--muted);
  font-size: clamp(15px, 3.8vw, 17px);
  line-height: 1.5;
}

.lookup {
  display: grid;
  gap: 10px;
}

.lookup label {
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.field-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
}

input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0 16px;
  color: var(--text);
  background: #0b111a;
  font: 700 16px var(--font-mono);
  outline: none;
  touch-action: manipulation;
}

@media (pointer: coarse) {
  input,
  button,
  .support,
  .breakdown summary,
  .expired summary {
    min-height: 48px;
  }
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(129, 140, 248, .18);
}

button,
.support {
  min-height: 52px;
  border: 0;
  border-radius: 16px;
  padding: 0 22px;
  color: #06110d;
  background: var(--money);
  font: 800 15px var(--font-sans);
  cursor: pointer;
  text-decoration: none;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.alert {
  width: fit-content;
  margin: 18px 0 0;
  border: 1px solid rgba(251, 113, 133, .38);
  border-radius: 14px;
  padding: 10px 12px;
  color: #fecdd3;
  background: rgba(251, 113, 133, .12);
}

.results {
  margin-top: 20px;
  padding: clamp(20px, 4vw, 30px);
}

.results:has(.refund-total) {
  padding-bottom: calc(130px + env(safe-area-inset-bottom, 0px));
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.pill {
  border: 1px solid rgba(52, 211, 153, .35);
  border-radius: 999px;
  padding: 7px 11px;
  color: var(--money);
  background: rgba(52, 211, 153, .10);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.order-list {
  display: grid;
  gap: 12px;
}

.select-instruction {
  margin: -4px 0 14px;
  color: var(--muted);
}

.order-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  background: var(--panel-2);
}

.order-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-width: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.order-card:has(.refund-check:checked) {
  border-color: rgba(52, 211, 153, .6);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, .10);
}

.order-choice {
  flex: 1 1 auto;
}

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

.check-ui {
  display: grid;
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #0b111a;
}

.check-ui::after {
  content: "";
  width: 10px;
  height: 6px;
  border: solid #06110d;
  border-width: 0 0 3px 3px;
  opacity: 0;
  transform: rotate(-45deg) translate(1px, -1px);
}

.refund-check:checked + .check-ui {
  border-color: var(--money);
  background: var(--money);
}

.refund-check:checked + .check-ui::after {
  opacity: 1;
}

.refund-check:focus-visible + .check-ui {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.order-main {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex: 1 1 auto;
  min-width: 0;
}

.order-copy {
  min-width: 0;
}

.order-copy h3 {
  overflow-wrap: anywhere;
}

.order-meta {
  line-height: 1.45;
}

.product-emoji {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 12px;
  background: #0c121c;
  font-weight: 800;
}

.order-main p,
.expired p,
.empty p {
  margin: 6px 0 0;
  color: var(--muted);
}

.order-main .order-ids {
  margin-top: 3px;
  color: #718097;
  font-size: 12px;
  overflow-wrap: anywhere;
}

.refund-amount {
  flex: 0 0 auto;
  text-align: right;
  white-space: nowrap;
}

.refund-amount span {
  display: block;
  color: var(--money);
  font: 800 26px var(--font-mono);
}

.refund-amount small {
  color: var(--muted);
}

.support {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.35;
}

.support-short {
  display: none;
}

.refund-total {
  position: sticky;
  bottom: max(12px, env(safe-area-inset-bottom, 0px));
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 18px;
  border: 1px solid rgba(52, 211, 153, .38);
  border-radius: 20px;
  padding: 16px;
  background: rgba(11, 17, 26, .96);
  box-shadow: 0 18px 50px -24px rgba(0, 0, 0, .9);
}

.refund-total strong {
  display: block;
  color: var(--money);
  font: 800 32px var(--font-mono);
}

.refund-total small {
  color: var(--muted);
}

.empty {
  border: 1px dashed var(--border);
  border-radius: 18px;
  padding: 20px;
  background: rgba(255,255,255,.02);
}

.expired {
  margin-top: 20px;
  color: var(--muted);
}

.expired summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 700;
}

.expired-list {
  margin-top: 12px;
}

.breakdown {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 12px 12px;
  background: rgba(7, 10, 16, .55);
}

.breakdown summary {
  cursor: pointer;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  list-style-position: outside;
}

.breakdown summary::-webkit-details-marker {
  color: var(--accent);
}

.breakdown-formula {
  margin: 10px 0 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.breakdown-scroll-hint {
  display: none;
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
}

.breakdown-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
}

.breakdown-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 12px;
}

.breakdown-table th,
.breakdown-table td {
  padding: 8px 10px;
  border-bottom: 1px solid rgba(37, 50, 70, .65);
  text-align: left;
  white-space: nowrap;
}

.breakdown-table th {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.breakdown-table tbody tr:last-child td {
  border-bottom: 0;
}

.breakdown-table td:first-child {
  font-family: var(--font-mono);
  font-weight: 700;
}

.breakdown-table td:last-child {
  color: var(--money);
  font-family: var(--font-mono);
  font-weight: 700;
}

@media (max-width: 640px) {
  .shell {
    width: calc(100% - 20px);
  }

  .hero,
  .results {
    border-radius: 20px;
  }

  .field-row {
    grid-template-columns: 1fr;
  }

  .section-head {
    flex-direction: column;
    align-items: stretch;
  }

  .pill {
    align-self: flex-start;
    white-space: normal;
    max-width: 100%;
  }

  .order-card-top {
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
  }

  .order-main {
    width: 100%;
  }

  .refund-amount {
    width: 100%;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(37, 50, 70, .55);
    text-align: left;
    white-space: normal;
  }

  .refund-amount span {
    font-size: clamp(22px, 6vw, 26px);
  }

  .refund-amount small {
    flex: 1 1 auto;
    text-align: right;
    font-size: 12px;
    line-height: 1.35;
  }

  button,
  .support {
    width: 100%;
  }

  .support-long {
    display: none;
  }

  .support-short {
    display: inline;
  }

  .refund-total {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 14px;
  }

  .refund-total strong {
    font-size: clamp(26px, 7vw, 32px);
  }

  .breakdown-scroll-hint {
    display: block;
  }

  .breakdown summary {
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 4px 0;
  }

  .expired summary {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .alert {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .breakdown-scroll-hint {
    display: none;
  }

  .breakdown-table {
    min-width: 0;
  }

  .breakdown-table thead {
    display: none;
  }

  .breakdown-table tbody tr {
    display: block;
    margin-bottom: 10px;
    border: 1px solid rgba(37, 50, 70, .75);
    border-radius: 12px;
    padding: 4px 0;
    background: rgba(11, 17, 26, .65);
  }

  .breakdown-table tbody tr:last-child {
    margin-bottom: 0;
  }

  .breakdown-table td {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 12px;
    border-bottom: 1px solid rgba(37, 50, 70, .45);
    white-space: normal;
  }

  .breakdown-table td::before {
    content: attr(data-label);
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
  }

  .breakdown-table td:last-child {
    border-bottom: 0;
    font-size: 15px;
  }
}