:root {
  color-scheme: light;
  --bg: #f3f7f8;
  --bg-soft: #e8f0f2;
  --surface: #ffffff;
  --surface-strong: #f9fcfd;
  --text: #102028;
  --muted: #4a5d66;
  --border: #c7d8de;
  --accent: #0f766e;
  --accent-strong: #0c5d56;
  --accent-soft: #d6f3f0;
  --focus: #f97316;
  --ok: #166534;
  --err: #b91c1c;
  --shadow: 0 10px 30px rgba(16, 32, 40, 0.1);
  --radius-xl: 22px;
  --radius-lg: 14px;
  --radius-md: 10px;
  --mono: "IBM Plex Mono", "Fira Code", "Source Code Pro", monospace;
  --sans: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0f171c;
    --bg-soft: #122028;
    --surface: #16242c;
    --surface-strong: #1b2d36;
    --text: #f0f6f8;
    --muted: #b6c6ce;
    --border: #33515f;
    --accent: #4dd3c8;
    --accent-strong: #73ece2;
    --accent-soft: rgba(77, 211, 200, 0.18);
    --focus: #f59e0b;
    --ok: #5eea98;
    --err: #ff8a8a;
    --shadow: 0 12px 32px rgba(0, 0, 0, 0.38);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  position: relative;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(70rem 44rem at 0% -10%, var(--bg-soft), transparent 62%),
    radial-gradient(52rem 34rem at 105% 8%, color-mix(in srgb, var(--accent-soft) 64%, transparent), transparent 68%),
    var(--bg);
  line-height: 1.55;
}

.page-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.orb {
  position: absolute;
  border-radius: 999px;
  filter: blur(2px);
  opacity: 0.42;
  animation: drift 14s ease-in-out infinite;
}

.orb-a {
  width: 18rem;
  height: 18rem;
  top: -5rem;
  left: -3rem;
  background: color-mix(in srgb, var(--accent-soft) 84%, transparent);
}

.orb-b {
  width: 20rem;
  height: 20rem;
  top: 20rem;
  right: -6rem;
  background: color-mix(in srgb, var(--accent) 26%, transparent);
  animation-delay: -5s;
}

.orb-c {
  width: 14rem;
  height: 14rem;
  bottom: -4rem;
  left: 38%;
  background: color-mix(in srgb, var(--focus) 24%, transparent);
  animation-delay: -8s;
}

.skip-link {
  position: absolute;
  top: -120px;
  left: 1rem;
  z-index: 50;
  background: var(--surface);
  color: var(--text);
  border: 2px solid var(--focus);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.9rem;
  text-decoration: none;
  font-weight: 700;
}

.skip-link:focus-visible {
  top: 1rem;
}

.wrap {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  padding-top: 2.4rem;
  padding-bottom: 1rem;
}

.eyebrow {
  margin: 0;
  font-size: 0.83rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

h1 {
  margin: 0.25rem 0 0.7rem;
  font-size: clamp(1.8rem, 1.2rem + 2.5vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.intro {
  margin: 0;
  max-width: 68ch;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  margin-bottom: 1rem;
}

.card {
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border: 1px solid color-mix(in srgb, var(--border) 78%, transparent);
  border-radius: var(--radius-xl);
  padding: clamp(1rem, 0.8rem + 1vw, 1.6rem);
  box-shadow: var(--shadow);
  backdrop-filter: blur(9px);
  animation: rise-in 480ms ease-out both;
}

.card-qr {
  animation-delay: 80ms;
}

h2 {
  margin: 0 0 0.8rem;
  font-size: 1.28rem;
  letter-spacing: -0.01em;
}

h3 {
  margin: 0;
  font-size: 1.03rem;
}

.form {
  display: grid;
  gap: 1rem;
}

.field-group {
  border: 0;
  margin: 0;
  padding: 0;
}

label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

input,
textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--surface-strong);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.72rem 0.78rem;
}

textarea {
  min-height: 12rem;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: color-mix(in srgb, var(--muted) 70%, transparent);
}

input:focus-visible,
textarea:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 85%, transparent);
  outline-offset: 2px;
}

input[aria-invalid="true"],
textarea[aria-invalid="true"] {
  border-color: var(--err);
}

.assist {
  margin: 0.48rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.token-help {
  margin-top: 0.9rem;
  padding: 0.8rem 0.9rem;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--border) 82%, transparent);
  background: linear-gradient(130deg, color-mix(in srgb, var(--accent-soft) 55%, transparent), transparent 80%);
}

.small {
  margin: 0;
  font-size: 0.86rem;
  color: var(--muted);
}

.strong {
  font-weight: 700;
  color: var(--text);
}

.token-steps {
  margin: 0.6rem 0 0.5rem 1.15rem;
  padding: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.token-steps li + li {
  margin-top: 0.32rem;
}

.token-help a {
  color: inherit;
  font-weight: 700;
  text-decoration-thickness: 2px;
  text-underline-offset: 2px;
}

.action-row {
  margin-top: 0.25rem;
}

.btns {
  margin-top: 1rem;
  display: grid;
  gap: 0.65rem;
  grid-template-columns: 1fr;
}

button {
  border: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  border-radius: 999px;
  padding: 0.72rem 1rem;
  font: inherit;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
  background: color-mix(in srgb, var(--surface) 90%, var(--bg-soft) 10%);
  cursor: pointer;
  transition: transform 170ms ease, background-color 170ms ease, border-color 170ms ease, box-shadow 170ms ease;
}

button.primary {
  width: 100%;
  color: #ffffff;
  border-color: transparent;
  background: linear-gradient(120deg, var(--accent), color-mix(in srgb, var(--accent) 82%, #0b4d47));
  box-shadow: 0 10px 22px color-mix(in srgb, var(--accent) 25%, transparent);
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
}

button:active:not(:disabled) {
  transform: translateY(0);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
}

.status {
  min-height: 2.25rem;
  margin-top: 1rem;
  padding: 0.62rem 0.78rem;
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  color: var(--muted);
  font-size: 0.93rem;
}

.status.ok {
  color: var(--ok);
  border-color: color-mix(in srgb, var(--ok) 35%, var(--border));
}

.status.err {
  color: var(--err);
  border-color: color-mix(in srgb, var(--err) 40%, var(--border));
}

.results {
  margin-top: 1rem;
}

.out {
  margin-top: 0.68rem;
  display: grid;
  gap: 0.62rem;
}

.output-item {
  border: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface-strong) 90%, transparent);
  padding: 0.7rem 0.78rem;
}

.output-label {
  margin: 0 0 0.35rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--muted);
  text-transform: uppercase;
}

.output-value {
  display: block;
  min-height: 1.25rem;
  overflow-wrap: anywhere;
}

.mono {
  font-family: var(--mono);
  font-size: 0.86rem;
}

.card-qr p {
  margin-top: 0.78rem;
}

.qrBox {
  display: grid;
  place-items: center;
  min-height: 300px;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background:
    linear-gradient(45deg, rgba(255, 255, 255, 0.36) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255, 255, 255, 0.36) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255, 255, 255, 0.36) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(255, 255, 255, 0.36) 75%),
    color-mix(in srgb, var(--bg-soft) 72%, transparent);
  background-size: 28px 28px;
  background-position: 0 0, 0 14px, 14px -14px, -14px 0;
  padding: 1rem;
}

canvas {
  width: min(100%, 360px);
  height: auto;
  border-radius: var(--radius-md);
  background: #ffffff;
  padding: 0.7rem;
}

.site-footer {
  padding-bottom: 1.7rem;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

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

@media (min-width: 760px) {
  .btns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .grid {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.72fr);
    align-items: start;
  }

  .card-qr {
    position: sticky;
    top: 1rem;
  }
}

@media (max-width: 560px) {
  .wrap {
    width: min(1120px, calc(100% - 1rem));
  }

  .site-header {
    padding-top: 1.4rem;
  }

  .card {
    border-radius: 18px;
    padding: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@keyframes drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(0, 14px, 0);
  }
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}