.checker-page {
  position: relative;
  padding-top: 112px;
  padding-bottom: 84px;
  min-height: calc(100svh - 76px);
}

.checker-hero-copy {
  max-width: 880px;
  margin: 0 auto 30px;
  text-align: center;
}

.checker-hero-copy h1 {
  margin-left: auto;
  margin-right: auto;
}

.checker-hero-copy .hero-text {
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.checker-shell {
  position: relative;
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 22px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(94, 224, 255, 0.10), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.084), rgba(255, 255, 255, 0.036));
  box-shadow:
    0 30px 92px rgba(0, 0, 0, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
}

.checker-shell::before {
  content: "";
  position: absolute;
  inset: -1px;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 0%, rgba(94, 224, 255, 0.18), transparent 42%),
    linear-gradient(90deg, transparent, rgba(94, 224, 255, 0.10), transparent);
  opacity: 0.72;
}

.checker-shell > * {
  position: relative;
  z-index: 1;
}

.checker-form {
  margin: 0;
}

.checker-label {
  display: block;
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.checker-command {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  min-height: 66px;
  padding: 8px;
  border: 1px solid rgba(94, 224, 255, 0.23);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(7, 15, 28, 0.84), rgba(8, 18, 34, 0.72)),
    rgba(255, 255, 255, 0.04);
  box-shadow:
    inset 0 0 34px rgba(94, 224, 255, 0.07),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.checker-command:focus-within {
  border-color: rgba(94, 224, 255, 0.58);
  box-shadow:
    0 0 0 4px rgba(94, 224, 255, 0.08),
    inset 0 0 38px rgba(94, 224, 255, 0.11);
}

.checker-prompt {
  padding-left: 18px;
  color: rgba(94, 224, 255, 0.82);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.checker-input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
  font: 700 18px/1.3 var(--font-sans);
}

.checker-input::placeholder {
  color: rgba(149, 166, 196, 0.56);
}

.checker-submit {
  min-height: 50px;
  border: 0;
  cursor: pointer;
}

.checker-submit[disabled] {
  cursor: wait;
  opacity: 0.72;
  transform: none;
}

.checker-hint {
  margin: 12px 10px 0;
  color: var(--muted);
  font-size: 14px;
}

.checker-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 18px 0 0;
}

.checker-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 11px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 999px;
  color: rgba(238, 244, 255, 0.78);
  background: rgba(255, 255, 255, 0.045);
  font-size: 12px;
  font-weight: 800;
}

.checker-console {
  position: relative;
  margin-top: 22px;
  padding: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 22px;
  background: rgba(3, 10, 20, 0.44);
}

.checker-console::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(94, 224, 255, 0.055), transparent);
  transform: translateY(-100%);
  animation: checker-scan 4.8s ease-in-out infinite;
}

@keyframes checker-scan {
  0%, 32% { transform: translateY(-100%); opacity: 0; }
  46% { opacity: 1; }
  72%, 100% { transform: translateY(100%); opacity: 0; }
}

.checker-preview-status,
.checker-loading-head,
.checker-summary-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.checker-status-inline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 850;
}

.checker-dot {
  width: 9px;
  height: 9px;
  flex: 0 0 9px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(94, 224, 255, 0.46);
}

.checker-dot--ok { background: #78e6b6; box-shadow: 0 0 18px rgba(120, 230, 182, 0.34); }
.checker-dot--warning { background: #f4c56b; box-shadow: 0 0 18px rgba(244, 197, 107, 0.28); }
.checker-dot--error { background: #ff7d8d; box-shadow: 0 0 18px rgba(255, 125, 141, 0.28); }

.checker-preview-text {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.checker-skeleton {
  display: grid;
  gap: 12px;
}

.checker-skeleton span {
  display: block;
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.075);
}

.checker-skeleton span::before {
  content: "";
  display: block;
  width: 45%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(94, 224, 255, 0.22), transparent);
  animation: checker-shimmer 2.8s ease-in-out infinite;
}

.checker-skeleton span:nth-child(1) { width: 76%; }
.checker-skeleton span:nth-child(2) { width: 92%; }
.checker-skeleton span:nth-child(3) { width: 62%; }
.checker-skeleton span:nth-child(4) { width: 84%; }

@keyframes checker-shimmer {
  from { transform: translateX(-120%); }
  to { transform: translateX(240%); }
}

.checker-steps {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.checker-step {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.075);
  border-radius: 14px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.028);
}

.checker-step.is-current {
  color: var(--text);
  border-color: rgba(94, 224, 255, 0.34);
  background: rgba(94, 224, 255, 0.07);
}

.checker-step.is-complete {
  color: rgba(238, 244, 255, 0.80);
}

.checker-step__mark {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border-radius: 999px;
  background: rgba(149, 166, 196, 0.48);
}

.checker-step.is-current .checker-step__mark {
  background: var(--accent);
  box-shadow: 0 0 16px rgba(94, 224, 255, 0.52);
}

.checker-step.is-complete .checker-step__mark {
  background: #78e6b6;
}

.checker-summary {
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.072), rgba(255, 255, 255, 0.032));
}

.checker-summary h2 {
  margin: 0;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.03em;
}

.checker-summary p {
  margin: 8px 0 0;
  color: var(--muted);
}

.checker-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  font-size: 13px;
  font-weight: 850;
  white-space: nowrap;
}

.checker-result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 14px;
}

.checker-result-card {
  min-height: 126px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.068), rgba(255, 255, 255, 0.03));
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.checker-result-card:hover {
  transform: translateY(-3px);
  border-color: rgba(94, 224, 255, 0.30);
}

.checker-result-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 8px;
  font-size: 16px;
}

.checker-result-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.checker-details {
  margin-top: 14px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.035);
}

.checker-details summary {
  cursor: pointer;
  padding: 14px 16px;
  color: var(--text);
  font-weight: 850;
}

.checker-details pre {
  max-height: 320px;
  margin: 0;
  padding: 0 16px 16px;
  overflow: auto;
  color: rgba(238, 244, 255, 0.78);
  font: 12px/1.55 ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  white-space: pre-wrap;
}

.checker-contact {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.checker-contact p {
  margin: 0 0 12px;
  color: var(--text);
  font-weight: 850;
}

.checker-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.checker-contact-actions .btn {
  min-height: 46px;
  padding: 0 18px;
}

.checker-copy-state {
  min-height: 20px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.checker-error {
  padding: 18px;
  border: 1px solid rgba(255, 125, 141, 0.26);
  border-radius: 18px;
  background: rgba(255, 125, 141, 0.06);
}

.checker-error h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.checker-error p {
  margin: 0;
  color: var(--muted);
}

.checker-notice {
  padding: 18px;
  border: 1px solid rgba(242, 185, 80, 0.34);
  border-radius: 18px;
  background: rgba(242, 185, 80, 0.08);
}

.checker-notice h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.checker-notice p {
  margin: 0;
  color: var(--muted);
}

.checker-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.checker-info-card {
  min-height: 100%;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.066), rgba(255, 255, 255, 0.03));
}

.checker-info-card p {
  margin-bottom: 0;
  color: var(--muted);
}

@media (max-width: 900px) {
  .checker-page {
    padding-top: 104px;
  }

  .checker-result-grid,
  .checker-info-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .checker-page {
    padding-top: 112px !important;
    padding-bottom: 58px;
  }

  .checker-hero-copy {
    text-align: left;
  }

  .checker-shell {
    padding: 14px;
    border-radius: 22px;
    backdrop-filter: none;
  }

  .checker-command {
    grid-template-columns: 1fr;
    align-items: stretch;
    border-radius: 20px;
    padding: 12px;
  }

  .checker-prompt {
    padding-left: 2px;
  }

  .checker-input {
    min-height: 46px;
    font-size: 17px;
  }

  .checker-submit {
    width: 100%;
  }

  .checker-console {
    padding: 14px;
    border-radius: 18px;
  }

  .checker-preview-status,
  .checker-loading-head,
  .checker-summary-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .checker-result-card:hover {
    transform: none;
  }

  .checker-contact-actions {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .checker-console::after,
  .checker-skeleton span::before {
    animation: none;
  }
}