:root {
  --checker-critical: #ff6b6b;
  --checker-high: #ff9f43;
  --checker-medium: #ffd166;
  --checker-low: #8aa0b8;
  --checker-info: #7397b8;
  --checker-safe: oklch(0.72 0.14 160);
}

.checker-shell {
  max-width: 1180px;
}

.checker-shell [hidden] {
  display: none !important;
}

.checker-hero {
  max-width: 980px;
  padding-bottom: 34px;
}

.checker-hero .article-title {
  max-width: 960px;
}

.checker-trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.checker-trust {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding: 7px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-2);
  background: rgba(255, 255, 255, .018);
  font-size: 12px;
}

.checker-trust::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--checker-safe);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--checker-safe) 12%, transparent);
  content: "";
}

.checker-layout {
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
  gap: 18px;
  align-items: start;
}

.checker-panel {
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(22, 22, 24, .98), rgba(16, 16, 18, .98));
  overflow: hidden;
}

.checker-panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 22px 18px;
  border-bottom: 1px solid var(--border);
}

.checker-step {
  margin: 0 0 7px;
  color: var(--accent);
  font: 11px/1.3 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.checker-panel h2,
.checker-panel h3 {
  margin: 0;
  letter-spacing: 0;
}

.checker-panel h2 {
  font-size: 21px;
  line-height: 1.2;
}

.checker-panel-copy {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.checker-input-body {
  padding: 22px;
}

.checker-dropzone {
  position: relative;
  display: grid;
  min-height: 224px;
  place-items: center;
  padding: 28px;
  border: 1px dashed rgba(255, 255, 255, .19);
  border-radius: 14px;
  background:
    radial-gradient(circle at 50% 0, color-mix(in srgb, var(--accent) 8%, transparent), transparent 55%),
    rgba(255, 255, 255, .018);
  text-align: center;
  transition: border-color .15s ease, background .15s ease, transform .15s ease;
}

.checker-dropzone.is-dragging {
  border-color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-2px);
}

.checker-dropzone.has-file {
  border-style: solid;
  border-color: var(--accent-line);
}

.checker-drop-icon {
  display: grid;
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  place-items: center;
  border: 1px solid var(--accent-line);
  border-radius: 13px;
  background: var(--accent-dim);
  color: var(--accent);
  font: 19px/1 var(--mono);
}

.checker-drop-title {
  margin: 0;
  color: var(--text);
  font-size: 17px;
}

.checker-drop-copy {
  max-width: 330px;
  margin: 7px auto 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.55;
}

.checker-file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.checker-drop-actions,
.checker-actions,
.checker-result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.checker-drop-actions {
  justify-content: center;
  margin-top: 18px;
}

.checker-btn {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  background: var(--surface-2);
  color: var(--text);
  font: 500 13px/1.2 var(--sans);
  cursor: pointer;
  transition: border-color .15s ease, background .15s ease, color .15s ease, transform .15s ease;
}

.checker-btn:hover {
  border-color: rgba(255, 255, 255, .24);
  background: rgba(255, 255, 255, .075);
}

.checker-btn:active {
  transform: translateY(1px);
}

.checker-btn:focus-visible,
.checker-filter:focus-visible,
.checker-tab:focus-visible,
.checker-textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.checker-btn-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #062015;
}

.checker-btn-primary:hover {
  border-color: color-mix(in srgb, var(--accent) 84%, white);
  background: color-mix(in srgb, var(--accent) 84%, white);
}

.checker-btn[disabled] {
  cursor: not-allowed;
  opacity: .5;
}

.checker-tabs {
  display: flex;
  gap: 5px;
  margin: 16px 0 10px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(0, 0, 0, .15);
}

.checker-tab {
  flex: 1;
  min-height: 34px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  font: 12px/1 var(--mono);
  cursor: pointer;
}

.checker-tab[aria-selected="true"] {
  background: var(--surface-2);
  color: var(--text);
  box-shadow: 0 1px 8px rgba(0, 0, 0, .22);
}

.checker-paste {
  margin-top: 12px;
}

.checker-textarea {
  width: 100%;
  min-height: 196px;
  resize: vertical;
  padding: 13px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  outline: 0;
  background: #0d0d0f;
  color: var(--text);
  font: 12px/1.55 var(--mono);
}

.checker-selection {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  padding: 13px 14px;
  border: 1px solid var(--accent-line);
  border-radius: 11px;
  background: var(--accent-dim);
}

.checker-selection-mark {
  flex: 0 0 auto;
  color: var(--accent);
  font: 18px/1 var(--mono);
}

.checker-selection-copy {
  min-width: 0;
}

.checker-selection-name {
  overflow: hidden;
  margin: 0;
  color: var(--text);
  font: 13px/1.35 var(--mono);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.checker-selection-meta {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 11.5px;
}

.checker-remove {
  flex: 0 0 auto;
  margin-left: auto;
  border: 0;
  background: none;
  color: var(--muted);
  cursor: pointer;
  font: 18px/1 var(--sans);
}

.checker-actions {
  align-items: center;
  margin-top: 14px;
}

.checker-actions .checker-btn-primary {
  flex: 1 1 190px;
}

.checker-privacy-note {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.55;
}

.checker-error {
  margin: 14px 0 0;
  padding: 11px 12px;
  border: 1px solid color-mix(in srgb, var(--checker-critical) 40%, transparent);
  border-radius: 9px;
  background: color-mix(in srgb, var(--checker-critical) 8%, transparent);
  color: #ffb8b8;
  font-size: 12.5px;
  line-height: 1.5;
}

.checker-error[hidden] {
  display: none;
}

.checker-empty {
  display: grid;
  min-height: 514px;
  place-items: center;
  padding: 44px 30px;
  text-align: center;
}

.checker-empty-mark {
  position: relative;
  width: 118px;
  height: 118px;
  margin: 0 auto 24px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--accent-dim) 0 4px, transparent 5px),
    radial-gradient(circle at 27% 62%, rgba(255, 255, 255, .11) 0 3px, transparent 4px),
    radial-gradient(circle at 73% 36%, rgba(255, 255, 255, .11) 0 3px, transparent 4px);
}

.checker-empty-mark::before,
.checker-empty-mark::after {
  position: absolute;
  height: 1px;
  background: var(--accent-line);
  content: "";
  transform-origin: left center;
}

.checker-empty-mark::before {
  width: 54px;
  top: 61px;
  left: 31px;
  transform: rotate(-25deg);
}

.checker-empty-mark::after {
  width: 48px;
  top: 59px;
  left: 35px;
  transform: rotate(32deg);
}

.checker-empty h2 {
  font-size: 22px;
}

.checker-empty p {
  max-width: 410px;
  margin: 10px auto 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.65;
}

.checker-loading {
  display: grid;
  min-height: 514px;
  place-items: center;
  padding: 40px;
  text-align: center;
}

.checker-spinner {
  width: 44px;
  height: 44px;
  margin: 0 auto 18px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: checker-spin .75s linear infinite;
}

@keyframes checker-spin {
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .checker-spinner { animation-duration: 1.8s; }
  .checker-dropzone,
  .checker-btn { transition: none; }
}

.checker-results {
  padding-bottom: 18px;
}

.checker-score-row {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 22px;
  align-items: center;
  padding: 22px;
}

.checker-score {
  --score: 0;
  --score-color: var(--checker-critical);
  position: relative;
  display: grid;
  width: 136px;
  height: 136px;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--score-color) calc(var(--score) * 1%), rgba(255, 255, 255, .08) 0);
}

.checker-score::before {
  position: absolute;
  inset: 9px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  content: "";
}

.checker-score-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.checker-score-value {
  display: block;
  color: var(--text);
  font-size: 39px;
  font-weight: 650;
  line-height: 1;
  letter-spacing: -.04em;
}

.checker-score-label {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font: 10px/1.2 var(--mono);
  letter-spacing: .07em;
  text-transform: uppercase;
}

.checker-grade {
  margin: 0;
  font-size: 25px;
  line-height: 1.15;
}

.checker-grade-copy {
  margin: 8px 0 0;
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.55;
}

.checker-mini-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0 22px 20px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--border);
  overflow: hidden;
}

.checker-mini-stat {
  padding: 13px 12px;
  background: var(--surface);
  text-align: center;
}

.checker-mini-stat strong {
  display: block;
  color: var(--text);
  font: 20px/1 var(--mono);
}

.checker-mini-stat span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 10.5px;
}

.checker-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 14px 22px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.checker-filter {
  min-height: 31px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: 11px/1 var(--mono);
  white-space: nowrap;
  cursor: pointer;
}

.checker-filter[aria-pressed="true"] {
  border-color: var(--accent-line);
  background: var(--accent-dim);
  color: var(--text);
}

.checker-findings {
  display: grid;
  gap: 10px;
  max-height: 610px;
  padding: 16px 22px;
  overflow: auto;
  scrollbar-color: rgba(255, 255, 255, .16) transparent;
}

.checker-finding {
  border: 1px solid var(--border);
  border-left: 3px solid var(--checker-info);
  border-radius: 11px;
  background: rgba(255, 255, 255, .018);
  overflow: hidden;
}

.checker-finding[data-severity="critical"] { border-left-color: var(--checker-critical); }
.checker-finding[data-severity="high"] { border-left-color: var(--checker-high); }
.checker-finding[data-severity="medium"] { border-left-color: var(--checker-medium); }
.checker-finding[data-severity="low"] { border-left-color: var(--checker-low); }

.checker-finding summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 14px;
  list-style: none;
  cursor: pointer;
}

.checker-finding summary::-webkit-details-marker {
  display: none;
}

.checker-finding summary::after {
  color: var(--muted);
  content: "+";
  font: 16px/1 var(--mono);
}

.checker-finding[open] summary::after {
  content: "−";
}

.checker-severity {
  display: inline-flex;
  min-height: 22px;
  align-items: center;
  padding: 4px 7px;
  border-radius: 5px;
  background: rgba(255, 255, 255, .05);
  color: var(--muted);
  font: 9.5px/1 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.checker-finding[data-severity="critical"] .checker-severity { color: #ff9f9f; }
.checker-finding[data-severity="high"] .checker-severity { color: #ffc17d; }
.checker-finding[data-severity="medium"] .checker-severity { color: #ffe49c; }

.checker-finding-title {
  min-width: 0;
  color: var(--text);
  font-size: 13.5px;
  font-weight: 550;
  line-height: 1.35;
}

.checker-finding-body {
  padding: 0 14px 14px;
  border-top: 1px solid var(--border);
}

.checker-finding-body p {
  margin: 12px 0 0;
  color: var(--text-2);
  font-size: 12.5px;
  line-height: 1.6;
}

.checker-finding-body strong {
  color: var(--text);
  font-weight: 600;
}

.checker-node-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.checker-node {
  padding: 5px 7px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(0, 0, 0, .16);
  color: var(--muted);
  font: 10.5px/1.2 var(--mono);
}

.checker-learn {
  display: inline-flex;
  margin-top: 12px;
  color: var(--accent);
  font-size: 12px;
}

.checker-result-actions {
  padding: 4px 22px 0;
}

.checker-result-actions .checker-btn {
  flex: 1 1 145px;
  font-size: 12px;
}

.checker-limitations {
  margin: 14px 22px 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}

.checker-section {
  padding-top: 62px;
}

.checker-section-head {
  max-width: 760px;
  margin-bottom: 24px;
}

.checker-section-head h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.08;
}

.checker-section-head p:last-child {
  margin: 14px 0 0;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.65;
}

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

.checker-rule-card {
  min-height: 170px;
  padding: 19px;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: var(--surface);
}

.checker-rule-number {
  color: var(--accent);
  font: 11px/1 var(--mono);
}

.checker-rule-card h3 {
  margin: 25px 0 8px;
  font-size: 17px;
}

.checker-rule-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.checker-privacy-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .75fr);
  gap: 14px;
}

.checker-copy-card,
.checker-boundary-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}

.checker-copy-card h3,
.checker-boundary-card h3 {
  margin: 0 0 12px;
  font-size: 20px;
}

.checker-copy-card p,
.checker-boundary-card p,
.checker-copy-card li,
.checker-boundary-card li {
  color: var(--text-2);
  font-size: 13.5px;
  line-height: 1.65;
}

.checker-copy-card ul,
.checker-boundary-card ul {
  margin: 14px 0 0;
  padding-left: 20px;
}

.checker-referral {
  margin-top: 14px;
}

.checker-referral p {
  margin: 4px 0;
}

.checker-referral .cta-h {
  color: var(--text);
}

@media (max-width: 980px) {
  .checker-layout {
    grid-template-columns: 1fr;
  }

  .checker-empty,
  .checker-loading {
    min-height: 390px;
  }

  .checker-rule-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .checker-shell {
    padding-left: 16px;
    padding-right: 16px;
  }

  .checker-hero {
    padding-bottom: 22px;
  }

  .checker-panel-head,
  .checker-input-body,
  .checker-score-row {
    padding-left: 16px;
    padding-right: 16px;
  }

  .checker-dropzone {
    min-height: 208px;
    padding: 23px 16px;
  }

  .checker-score-row {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 15px;
  }

  .checker-score {
    width: 106px;
    height: 106px;
  }

  .checker-score-value {
    font-size: 31px;
  }

  .checker-mini-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-right: 16px;
    margin-left: 16px;
  }

  .checker-filters,
  .checker-findings {
    padding-right: 16px;
    padding-left: 16px;
  }

  .checker-findings {
    max-height: none;
  }

  .checker-finding summary {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .checker-finding summary::after {
    display: none;
  }

  .checker-result-actions,
  .checker-limitations {
    margin-right: 16px;
    margin-left: 16px;
    padding-right: 0;
    padding-left: 0;
  }

  .checker-rule-grid,
  .checker-privacy-grid {
    grid-template-columns: 1fr;
  }

  .checker-section {
    padding-top: 48px;
  }
}