:root {
  color-scheme: light dark;

  --guard-bg: #0d1110;
  --guard-card: #171d1a;
  --guard-ink: #f0f5ee;
  --guard-muted: #aebbb2;
  --guard-line: #344139;
  --guard-accent: #a9c88c;
  --guard-danger: #ef9c92;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--guard-ink);
  font: 16px/1.55 system-ui, sans-serif;
  background: radial-gradient(circle at 20% 0, #223429 0, transparent 34%), var(--guard-bg);
}

button,
input {
  font: inherit;
}

.guard-shell {
  display: grid;
  width: min(760px, calc(100% - 32px));
  margin: clamp(32px, 8vh, 88px) auto;
  gap: 18px;
}

.guard-head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.guard-head p,
.guard-section-title p {
  margin: 0;
  color: var(--guard-muted);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.guard-head h1,
.guard-section-title h2 {
  margin: 0;
}

.guard-mark {
  display: grid;
  width: 48px;
  height: 48px;
  color: var(--guard-accent);
  font: 700 25px Georgia, serif;
  border: 1px solid var(--guard-accent);
  border-radius: 15px;
  box-shadow: 0 0 38px color-mix(in srgb, var(--guard-accent) 18%, transparent);
  place-items: center;
}

.guard-card {
  padding: clamp(22px, 4vw, 34px);
  background: color-mix(in srgb, var(--guard-card) 94%, transparent);
  border: 1px solid var(--guard-line);
  border-radius: 22px;
  box-shadow: 0 22px 60px rgb(0 0 0 / 22%);
}

.guard-card h2 {
  margin: 8px 0 6px;
  font-size: clamp(24px, 5vw, 38px);
  line-height: 1.12;
}

.guard-card p {
  color: var(--guard-muted);
}

.guard-status {
  display: inline-flex;
  padding: 6px 10px;
  color: var(--guard-accent);
  font-size: 13px;
  font-weight: 700;
  background: color-mix(in srgb, var(--guard-accent) 13%, transparent);
  border-radius: 999px;
}

.guard-button {
  display: inline-flex;
  justify-content: center;
  padding: 12px 17px;
  color: #122014;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  background: var(--guard-accent);
  border: 0;
  border-radius: 12px;
  min-height: 44px;
}

.guard-secondary {
  color: var(--guard-accent);
  background: transparent;
  border: 1px solid var(--guard-accent);
}

.guard-link,
.guard-danger {
  padding: 8px 0;
  color: var(--guard-muted);
  cursor: pointer;
  background: transparent;
  border: 0;
}

.guard-danger {
  color: var(--guard-danger);
}

.guard-ready form {
  margin-top: 8px;
}

.guard-section-title,
.guard-device {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.guard-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 9px;
}

.guard-devices {
  display: grid;
  margin-top: 20px;
  gap: 9px;
}

.guard-device {
  padding: 14px 0 4px;
  border-top: 1px solid var(--guard-line);
}

.guard-device strong,
.guard-device small {
  display: block;
}

.guard-device small {
  margin-top: 3px;
  color: var(--guard-muted);
}

.guard-device.is-revoked {
  opacity: 0.5;
}

.guard-form {
  display: grid;
  margin-top: 16px;
  gap: 12px;
}

label {
  display: grid;
  color: var(--guard-muted);
  gap: 6px;
}

input {
  width: 100%;
  min-height: 44px;
  padding: 12px 13px;
  color: var(--guard-ink);
  background: #0e1411;
  border: 1px solid var(--guard-line);
  border-radius: 11px;
}

@media (width <= 520px) {
  .guard-shell {
    width: min(100% - 20px, 760px);
    margin-block: 18px;
  }

  .guard-card {
    padding: 18px;
  }

  .guard-section-title,
  .guard-device {
    flex-direction: column;
    align-items: stretch;
  }

  .guard-device form,
  .guard-device button,
  .guard-button {
    width: 100%;
  }
}

details {
  margin-top: 18px;
  padding-top: 15px;
  border-top: 1px solid var(--guard-line);
}

summary {
  font-weight: 700;
  cursor: pointer;
}

.guard-feedback {
  min-height: 24px;
  color: var(--guard-accent) !important;
}

.guard-feedback[data-error="1"] {
  color: var(--guard-danger) !important;
}

.guard-notice {
  padding-left: 12px;
  border-left: 3px solid var(--guard-accent);
}

.guard-approval {
  margin-top: 22px;
  padding: 15px 0 0;
  border-top: 1px solid var(--guard-line);
}

.guard-pairing {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  margin-top: 22px;
  padding-top: 20px;
  gap: 20px;
  border-top: 1px solid var(--guard-line);
}

.guard-pairing[hidden],
.guard-pairing-claim[hidden] {
  display: none;
}

.guard-pairing h3,
.guard-pairing-claim h3 {
  margin: 0;
  font-size: 22px;
}

.guard-pairing canvas {
  width: 228px;
  height: 228px;
  background: #fff;
  border: 10px solid #fff;
  border-radius: 14px;
}

.guard-pairing-claim {
  margin-top: 20px;
  padding: 18px;
  border: 1px solid var(--guard-accent);
  border-radius: 14px;
}

.guard-help {
  margin: 8px 0 0;
  font-size: 13px;
}

.guard-checkbox {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 16px 0;
  color: var(--guard-text);
  font-size: 14px;
}

.guard-checkbox input {
  inline-size: 18px;
  block-size: 18px;
  accent-color: var(--guard-accent);
}

.guard-code {
  display: block;
  width: max-content;
  max-width: 100%;
  margin-top: 10px;
  padding: 10px 13px;
  color: var(--guard-accent);
  font: 700 15px/1.4 ui-monospace, monospace;
  letter-spacing: 0.05em;
  border: 1px dashed var(--guard-accent);
  border-radius: 10px;
}

.guard-or {
  margin: 0 !important;
  font-size: 13px;
  text-align: center;
}

.guard-divider {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: center;
  margin: 22px 0;
  color: var(--guard-muted);
  font-size: 13px;
}

.guard-divider::before,
.guard-divider::after {
  content: "";
  height: 1px;
  background: var(--guard-border);
}

.guard-recovery-output {
  overflow: auto;
  margin-top: 16px;
  padding: 16px;
  color: var(--guard-text);
  background: var(--guard-soft);
  border: 1px solid var(--guard-border);
  border-radius: 12px;
  font: 700 14px/1.7 ui-monospace, monospace;
}

.guard-security-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.guard-security-summary div {
  padding: 13px;
  background: var(--guard-soft);
  border: 1px solid var(--guard-border);
  border-radius: 12px;
}

.guard-security-summary dt {
  margin-bottom: 3px;
  color: var(--guard-muted);
  font-size: 13px;
}

.guard-security-summary dd {
  margin: 0;
  font-weight: 700;
}

.guard-context-modes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}

.guard-context-modes .guard-button {
  min-height: 44px;
}

footer {
  color: var(--guard-muted);
  font-size: 13px;
  text-align: center;
}

.guard-transfer {
  justify-items: center;
  text-align: center;
}

@media (width <= 620px) {
  .guard-security-summary {
    grid-template-columns: 1fr;
  }

  .guard-section-title,
  .guard-device,
  .guard-pairing {
    flex-direction: column;
    align-items: stretch;
  }

  .guard-pairing {
    display: flex;
  }

  .guard-actions {
    display: grid;
    justify-content: stretch;
  }

  .guard-pairing canvas {
    width: min(100%, 300px);
    height: auto;
    margin: 0 auto;
  }

  .guard-button,
  .guard-danger {
    width: 100%;
  }
}