* { box-sizing: border-box; }

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  overflow-x: hidden;
}

body.system-page {
  background: var(--bg);
  color: var(--muted);
  font: var(--fs-body)/1.55 var(--mono);
}

.system-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px 16px;
  text-align: center;
}

body.system-402 > .system-wrap {
  width: min(calc(100% - 32px), 980px);
  margin: 0 auto;
}

.system-card {
  position: relative;
  width: min(100%, 520px);
  padding: 22px;
  border: .5px solid var(--purple-bd);
  border-radius: 10px;
  background: var(--bg);
}

.system-code {
  margin: 0 0 2px;
  color: var(--purple);
  font-size: 40px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: .08em;
}

.system-402 .system-code {
  color: var(--green);
}

.system-code .cursor {
  color: var(--green);
  animation: system-blink 1.1s steps(1) infinite;
}

@keyframes system-blink { 50% { opacity: 0; } }

.system-prompt {
  margin: 0 0 18px;
  color: var(--green);
  font-size: var(--fs-small);
  letter-spacing: .03em;
}

.system-prompt .dim { color: var(--muted); }

.system-title {
  margin: 0;
  color: var(--gold);
  font-size: clamp(18px, 5vw, 25px);
  font-weight: 500;
}

.system-message {
  margin: 15px auto 18px;
  color: var(--muted);
  font-size: var(--fs-body);
  line-height: 1.6;
}

.system-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 19px;
  padding-top: 18px;
  border-top: .5px solid var(--line);
}

.system-nav.nr-nav-enhanced {
  column-gap: 8px !important;
}

.system-nav.nr-nav-enhanced > a:first-child {
  margin-right: 0;
}

.system-nav > a,
.system-nav .nr-nav-trigger {
  min-height: 30px;
  padding: 5px 12px;
  border: .5px solid var(--line);
  border-radius: 999px;
  color: var(--green) !important;
  font: var(--fs-nav)/1.35 var(--mono);
  letter-spacing: .02em;
  text-decoration: none;
  transition: color .12s ease, border-color .12s ease, background .12s ease;
}

.system-nav > a:hover,
.system-nav > a:focus-visible,
.system-nav .nr-nav-trigger:hover,
.system-nav .nr-nav-trigger:focus-visible {
  border-color: var(--gold-bd);
  background: color-mix(in srgb, var(--gold) 12%, transparent);
  color: var(--gold) !important;
  outline: none;
}

.system-nav .nr-nav-panel a {
  display: block;
  padding: 6px 8px;
  border-radius: 5px;
  color: var(--green);
  font-size: var(--fs-nav, 11px);
  letter-spacing: .02em;
  line-height: 1.25;
  text-decoration: none;
  white-space: nowrap;
}

.system-nav .nr-nav-panel a:hover,
.system-nav .nr-nav-panel a:focus-visible {
  color: var(--purple) !important;
  background: color-mix(in srgb, var(--purple) 14%, transparent);
  outline: none;
}

.system-nav .nr-nav-panel a.nr-nav-gold:hover,
.system-nav .nr-nav-panel a.nr-nav-gold:focus-visible {
  border-color: var(--gold);
  background: color-mix(in srgb, var(--gold) 16%, transparent);
  color: var(--gold) !important;
}

.system-nav .nr-nav-item[data-nav="software"] .nr-nav-panel,
.system-nav .nr-nav-item[data-nav="worlds"] .nr-nav-panel {
  right: 0;
  left: auto;
}

.gate-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.gate-actions button,
.restore-access,
.access-key-toggle,
.gate-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 4px 13px;
  border: .5px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--purple);
  font: var(--fs-nav)/1 var(--mono);
  cursor: pointer;
  text-decoration: none;
}

.gate-actions button:hover,
.gate-actions button:focus-visible,
.restore-access:hover,
.restore-access:focus-visible,
.access-key-toggle:hover,
.access-key-toggle:focus-visible,
.gate-button:hover,
.gate-button:focus-visible {
  border-color: var(--gold-bd);
  background: color-mix(in srgb, var(--gold) 12%, transparent);
  color: var(--gold);
  outline: none;
}

.gate-actions button.unlock:hover,
.gate-actions button.unlock:focus-visible {
  border-color: var(--gold);
  background: var(--gold-bg);
  color: var(--gold);
}

.gate-actions button:disabled,
.restore-access:disabled,
.access-key-toggle:disabled {
  border-color: var(--line);
  background: transparent;
  color: var(--dim);
  cursor: not-allowed;
}

.resume-ask {
  margin: 15px 0 0;
  color: var(--muted);
  font-size: var(--fs-lead);
}

.resume-ask strong {
  color: var(--green);
  font-weight: 500;
}

.test-boundary {
  margin: 5px 0 12px;
  color: var(--dim);
  font-size: var(--fs-micro);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.payment-networks {
  display: flex;
  justify-content: center;
  gap: 6px;
  min-height: 27px;
  margin: 0 0 13px;
}

.payment-networks:empty {
  display: none;
}

.payment-networks button {
  padding: 4px 9px;
  border: .5px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--purple);
  font: var(--fs-micro)/1.2 var(--mono);
  cursor: pointer;
}

.payment-networks button:hover,
.payment-networks button:focus-visible {
  border-color: var(--gold-bd);
  color: var(--gold);
  outline: none;
}

.payment-networks button[aria-pressed="true"] {
  border-color: var(--gold-bd);
  background: color-mix(in srgb, var(--gold) 12%, transparent);
  color: var(--gold);
}

.payment-networks button:disabled {
  cursor: not-allowed;
  opacity: .55;
}

.restore-access {
  min-height: 0 !important;
  margin-top: 13px;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  color: var(--dim) !important;
  font-size: var(--fs-micro) !important;
}

.restore-access:hover,
.restore-access:focus-visible {
  border: 0;
  background: transparent;
  color: var(--gold) !important;
}

.restore-access.restore-available {
  min-height: 36px !important;
  margin-top: 14px;
  padding: 6px 14px !important;
  border: .5px solid var(--green-bd) !important;
  border-radius: 999px !important;
  background: var(--green-bg);
  color: var(--green) !important;
  font-size: var(--fs-nav) !important;
}

.restore-access.restore-available:hover,
.restore-access.restore-available:focus-visible {
  border-color: var(--gold) !important;
  background: var(--gold-bg);
  color: var(--gold) !important;
}

.access-key-toggle {
  min-height: 34px;
  margin-top: 11px;
  padding: 5px 13px;
  border-color: var(--purple-bd);
  background: var(--purple-bg);
  color: var(--purple);
}

.access-key-toggle:hover,
.access-key-toggle:focus-visible {
  border-color: var(--gold-bd);
  background: var(--gold-bg);
  color: var(--gold);
}

body.access-restorable .resume-ask,
body.access-restorable .test-boundary,
body.access-restorable .payment-networks,
body.access-restorable .unlock {
  display: none !important;
}

.restore-access[hidden],
.gate-button[hidden] {
  display: none !important;
}

.alternate-access {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.access-key-form {
  width: min(100%, 340px);
  margin-top: 12px;
  text-align: left;
}

.access-key-form[hidden] { display: none; }

.access-key-form label {
  display: block;
  margin: 0 0 5px 11px;
  color: var(--dim);
  font-size: var(--fs-micro);
}

.access-key-fields {
  display: flex;
  gap: 7px;
}

.access-key-fields input {
  min-width: 0;
  flex: 1;
  padding: 7px 10px;
  border: .5px solid var(--line);
  border-radius: 6px;
  background: transparent;
  color: var(--green);
  font: var(--fs-nav)/1.2 var(--mono);
}

.access-key-fields input:focus-visible {
  border-color: var(--gold-bd);
  outline: none;
}

.access-key-fields button {
  padding: 7px 11px;
  border: .5px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--purple);
  font: var(--fs-nav)/1 var(--mono);
  cursor: pointer;
}

.access-key-fields button:hover,
.access-key-fields button:focus-visible {
  border-color: var(--gold-bd);
  color: var(--gold);
  outline: none;
}

.access-key-fields button:disabled {
  color: var(--dim);
  cursor: not-allowed;
}

.gate-state {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 5px 13px;
  margin-top: 16px;
  color: var(--dim);
  font-size: var(--fs-micro);
}

.gate-state span + span { color: var(--purple); }
.gate-state strong { color: var(--green); font-weight: 500; }
.gate-state strong.error { color: var(--gold); }

@media (max-width: 480px) {
  .system-card { padding: 20px 16px; }
  .gate-actions { display: grid; }
  .access-key-fields { display: grid; }
  .system-nav { gap: 7px; }
}

@media (prefers-reduced-motion: reduce) {
  .system-code .cursor { animation: none; }
}