:root {
  color-scheme: dark;
  --bg: #071014;
  --panel: #10191e;
  --panel-soft: #142227;
  --ink: #eef7f4;
  --muted: #93aaa5;
  --line: #294047;
  --accent: #28c08d;
  --accent-strong: #17a36d;
  --amber: #e8a43f;
  --red: #e06464;
  --blue: #6fa7ff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(140deg, rgba(40, 192, 141, 0.12), transparent 28%),
    linear-gradient(210deg, rgba(111, 167, 255, 0.12), transparent 30%),
    var(--bg);
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

a {
  color: #9bc5ff;
}

.page-shell {
  width: min(1080px, calc(100% - 28px));
  margin: 0 auto;
  padding: 26px 0 42px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 320px);
  gap: 18px;
  align-items: start;
  margin-bottom: 18px;
}

.hero-side {
  display: grid;
  gap: 10px;
  width: 100%;
  min-width: 0;
  max-width: 320px;
}

.hero-copy {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.hero-eyebrow {
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.05;
}

.hero p,
.panel-title p {
  max-width: 720px;
  color: var(--muted);
  line-height: 1.65;
}

.status-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  color: var(--amber);
  background: rgba(16, 25, 30, 0.82);
}

.status-card.ok {
  color: var(--accent);
}

.queue-card {
  display: grid;
  gap: 8px;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  background: rgba(16, 25, 30, 0.82);
  overflow: hidden;
}

.queue-card div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.queue-card span,
.queue-card small {
  color: var(--muted);
  font-size: 12px;
}

.queue-card small {
  display: block;
  overflow-wrap: anywhere;
  line-height: 1.45;
}

.queue-card strong {
  color: var(--ink);
  font-size: 18px;
}

.redeem-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(16, 25, 30, 0.92);
  box-shadow: var(--shadow);
}

.stepper {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-bottom: 1px solid var(--line);
  background: rgba(20, 34, 39, 0.72);
}

.step-item {
  min-height: 58px;
  border: 0;
  border-right: 1px solid var(--line);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  color: var(--muted);
  background: transparent;
  cursor: default;
}

.step-item:last-child {
  border-right: 0;
}

.step-item span {
  display: inline-grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 800;
}

.step-item.active {
  color: var(--ink);
  background: linear-gradient(180deg, rgba(40, 192, 141, 0.22), rgba(40, 192, 141, 0.05));
}

.step-panel {
  display: none;
  padding: 24px;
}

.step-panel.active {
  display: grid;
  gap: 18px;
}

.panel-title {
  display: grid;
  gap: 7px;
}

.field {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #0b1418;
  outline: none;
}

input {
  min-height: 48px;
  padding: 0 14px;
}

textarea {
  min-height: 190px;
  padding: 13px 14px;
  resize: vertical;
  font-family: "Cascadia Mono", Consolas, monospace;
  line-height: 1.55;
}

input:focus,
textarea:focus {
  border-color: rgba(40, 192, 141, 0.82);
  box-shadow: 0 0 0 4px rgba(40, 192, 141, 0.14);
}

.guide-grid,
.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.guide-grid div,
.summary-grid div,
.account-preview,
.result-box,
.final-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
}

.guide-grid div {
  display: flex;
  gap: 10px;
  align-items: center;
  min-height: 70px;
  padding: 13px;
}

.guide-grid strong {
  display: inline-grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 50%;
  color: #071014;
  background: var(--accent);
}

.summary-grid div {
  display: grid;
  gap: 6px;
  min-height: 82px;
  padding: 14px;
}

.summary-grid span,
.account-preview span {
  color: var(--muted);
  font-size: 13px;
}

.summary-grid strong {
  overflow-wrap: anywhere;
}

.account-preview {
  display: grid;
  gap: 6px;
  padding: 14px;
}

.account-preview strong {
  font-size: 18px;
}

.account-preview small {
  color: var(--muted);
  line-height: 1.5;
}

.confirm-check {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

.confirm-check input {
  width: 18px;
  min-height: 18px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
}

.primary-button,
.secondary-button,
.danger-button {
  min-height: 44px;
  border-radius: 8px;
  padding: 0 18px;
  font-weight: 800;
  cursor: pointer;
}

.primary-button {
  border: 0;
  color: #06100d;
  background: var(--accent);
}

.primary-button:hover {
  background: #35dca4;
}

.secondary-button {
  color: var(--ink);
  border: 1px solid var(--line);
  background: #0b1418;
}

.danger-button {
  color: #fff;
  border: 1px solid rgba(224, 100, 100, 0.78);
  background: rgba(224, 100, 100, 0.18);
}

.danger-button:hover {
  background: rgba(224, 100, 100, 0.3);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.56;
}

.message-line,
.form-message {
  min-height: 24px;
  color: var(--muted);
  line-height: 1.5;
}

.message-line.error,
.form-message.error {
  color: var(--red);
}

.message-line.success,
.form-message.success {
  color: var(--accent);
}

.result-box {
  min-height: 92px;
  padding: 16px;
  color: var(--muted);
  line-height: 1.6;
}

.final-card {
  display: grid;
  gap: 8px;
  padding: 18px;
}

.final-card.success {
  border-color: rgba(40, 192, 141, 0.7);
}

.final-card.failed {
  border-color: rgba(224, 100, 100, 0.75);
}

.final-state {
  width: fit-content;
  border-radius: 999px;
  padding: 5px 10px;
  color: #06100d;
  background: var(--amber);
  font-size: 12px;
  font-weight: 900;
}

.final-card.success .final-state {
  background: var(--accent);
}

.final-card.failed .final-state {
  color: #fff;
  background: var(--red);
}

.final-card p {
  color: var(--muted);
  line-height: 1.6;
}

.manual-verification-note {
  border: 1px solid rgba(232, 164, 63, 0.55);
  border-radius: 8px;
  padding: 12px 14px;
  color: #f7db9c;
  background: rgba(232, 164, 63, 0.12);
  line-height: 1.7;
}

.progress-block {
  display: grid;
  gap: 8px;
  margin-top: 4px;
}

.progress-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
}

.progress-meta strong {
  color: var(--ink);
}

.progress-track {
  height: 10px;
  overflow: hidden;
  border: 1px solid rgba(40, 192, 141, 0.28);
  border-radius: 999px;
  background: rgba(7, 16, 20, 0.72);
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--blue));
  transition: width 0.3s ease;
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100% - 20px, 1080px);
    padding-top: 16px;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero-side {
    max-width: none;
  }

  .stepper,
  .guide-grid,
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .step-item {
    justify-content: flex-start;
    padding: 0 14px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .step-panel {
    padding: 18px;
  }

  .button-row {
    justify-content: stretch;
  }

  .primary-button,
  .secondary-button,
  .danger-button {
    flex: 1 1 100%;
  }
}