:root {
  color-scheme: dark;
  --bg: #07111f;
  --bg-elevated: rgba(15, 29, 48, 0.88);
  --bg-soft: #111f33;
  --text: #f3f7fc;
  --muted: #91a1b7;
  --line: rgba(153, 175, 207, 0.18);
  --accent: #60a5fa;
  --accent-strong: #38bdf8;
  --green: #34d399;
  --amber: #fbbf24;
  --red: #fb7185;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.22);
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #f3f7fb;
  --bg-elevated: rgba(255, 255, 255, 0.92);
  --bg-soft: #edf3fa;
  --text: #102033;
  --muted: #607087;
  --line: rgba(49, 73, 104, 0.15);
  --accent: #2563eb;
  --accent-strong: #0284c7;
  --green: #059669;
  --amber: #b45309;
  --red: #e11d48;
  --shadow: 0 24px 60px rgba(52, 72, 99, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 0%, rgba(37, 99, 235, 0.18), transparent 28rem),
    radial-gradient(circle at 92% 18%, rgba(14, 165, 233, 0.12), transparent 24rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.55;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.topbar {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 74px;
  padding: 0 4vw;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(96, 165, 250, 0.4);
  border-radius: 13px;
  background: linear-gradient(145deg, rgba(37, 99, 235, 0.35), rgba(56, 189, 248, 0.14));
  color: #dbeafe;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  line-height: 1.2;
}

.brand small {
  margin-top: 0.13rem;
  color: var(--muted);
  font-size: 0.72rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.status-chip,
.privacy-chip,
.count-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0.18rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--bg-soft);
  font-size: 0.76rem;
  font-weight: 650;
}

.status-chip::before {
  width: 7px;
  height: 7px;
  margin-right: 0.4rem;
  border-radius: 50%;
  background: currentColor;
  content: "";
}

.status-chip.ready {
  color: var(--green);
}

.status-chip.error {
  color: var(--red);
}

.button,
.icon-button,
.copy-button {
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease;
}

.button {
  min-height: 40px;
  padding: 0.48rem 0.9rem;
  background: linear-gradient(135deg, #2563eb, #0284c7);
  color: white;
  font-size: 0.86rem;
  font-weight: 700;
}

.button.secondary,
.icon-button,
.copy-button {
  border-color: var(--line);
  background: var(--bg-soft);
  color: var(--text);
}

.icon-button {
  width: 40px;
  height: 40px;
}

.copy-button {
  padding: 0.32rem 0.6rem;
  color: var(--muted);
  font-size: 0.75rem;
}

.button:hover,
.icon-button:hover,
.copy-button:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 60%, var(--line));
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent);
  outline-offset: 2px;
}

main,
footer {
  width: min(1440px, 92vw);
  margin-inline: auto;
}

main {
  padding: 2.2rem 0 3rem;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: center;
  min-height: 235px;
  padding: clamp(1.5rem, 3.5vw, 3rem);
  overflow: hidden;
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent-strong);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.ip-line {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

h1 {
  margin-bottom: 0.5rem;
  overflow-wrap: anywhere;
  font-size: clamp(2rem, 5vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 0;
  font-size: 1.1rem;
  letter-spacing: -0.015em;
}

h3 {
  margin-bottom: 0.65rem;
  font-size: 0.92rem;
}

.hero-location,
.section-copy {
  color: var(--muted);
}

.hero-location {
  margin-bottom: 1rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  padding: 0.25rem 0.58rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: var(--bg-soft);
  font-size: 0.75rem;
}

.score-card {
  display: grid;
  width: 170px;
  min-height: 170px;
  place-items: center;
  align-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--bg-soft);
  text-align: center;
}

.score-card strong {
  font-size: 3.35rem;
  line-height: 1;
}

.score-card small,
.score-label {
  color: var(--muted);
  font-size: 0.73rem;
}

.score-card.low strong {
  color: var(--green);
}

.score-card.medium strong {
  color: var(--amber);
}

.score-card.high strong,
.score-card.critical strong {
  color: var(--red);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.summary-card,
.section-panel {
  padding: 1.25rem;
}

dl {
  margin: 0;
}

.summary-card dl > div,
.environment-list > div {
  display: grid;
  grid-template-columns: minmax(90px, 0.42fr) minmax(0, 1fr);
  gap: 0.8rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
}

dl > div:last-child {
  border-bottom: 0;
}

dt {
  color: var(--muted);
  font-size: 0.78rem;
}

dd {
  margin: 0;
  overflow-wrap: anywhere;
  font-size: 0.82rem;
  font-weight: 650;
  text-align: right;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.9fr) minmax(300px, 0.8fr);
  gap: 1rem;
  margin-top: 1rem;
}

.main-column,
.side-column {
  display: grid;
  align-content: start;
  gap: 1rem;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-heading .eyebrow {
  margin-bottom: 0.18rem;
}

.result-list {
  display: grid;
  gap: 0.65rem;
}

.result-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.7rem;
  align-items: start;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--bg-soft);
}

.result-dot {
  width: 9px;
  height: 9px;
  margin-top: 0.35rem;
  border-radius: 50%;
  background: var(--muted);
}

.result-dot.high,
.result-dot.critical {
  background: var(--red);
}

.result-dot.medium {
  background: var(--amber);
}

.result-dot.low,
.result-dot.info {
  background: var(--green);
}

.result-item strong,
.result-item small {
  display: block;
}

.result-item small {
  margin-top: 0.15rem;
  color: var(--muted);
  font-size: 0.73rem;
}

.impact {
  color: var(--red);
  font-size: 0.76rem;
  font-weight: 800;
}

.subsection {
  margin-top: 1.25rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}

.compact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.6rem;
}

.compact-item {
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-soft);
}

.compact-item strong,
.compact-item span {
  display: block;
}

.compact-item span {
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.72rem;
}

.status-clean {
  color: var(--green);
}

.status-listed,
.status-error {
  color: var(--red);
}

.fingerprint-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.fingerprint-grid > div {
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--bg-soft);
}

.fingerprint-grid span,
.fingerprint-grid strong,
.fingerprint-grid code {
  display: block;
}

.fingerprint-grid span {
  margin-bottom: 0.28rem;
  color: var(--muted);
  font-size: 0.72rem;
}

code {
  overflow-wrap: anywhere;
  color: color-mix(in srgb, var(--accent-strong) 82%, var(--text));
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.76rem;
}

.inline-notice,
.probe-result {
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--muted);
  font-size: 0.8rem;
}

.inline-notice {
  margin-top: 0.8rem;
}

.inline-notice.good,
.probe-result.good {
  border-color: color-mix(in srgb, var(--green) 42%, var(--line));
  color: var(--green);
}

.inline-notice.warning,
.probe-result.warning {
  border-color: color-mix(in srgb, var(--amber) 42%, var(--line));
  color: var(--amber);
}

.inline-notice.bad,
.probe-result.bad {
  border-color: color-mix(in srgb, var(--red) 42%, var(--line));
  color: var(--red);
}

.probe-result {
  margin-top: 0.65rem;
}

.environment-list {
  margin-top: 0.8rem;
}

.lookup-form {
  display: grid;
  gap: 0.6rem;
  margin-top: 1rem;
}

.lookup-form label {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
}

.lookup-form input {
  width: 100%;
  min-height: 42px;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: 0;
  background: var(--bg-soft);
  color: var(--text);
}

.source-list {
  display: grid;
  gap: 0.55rem;
}

.source-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.55rem;
  align-items: start;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--line);
}

.source-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.source-state {
  width: 8px;
  height: 8px;
  margin-top: 0.35rem;
  border-radius: 50%;
  background: var(--red);
}

.source-state.ready {
  background: var(--green);
}

.source-item strong,
.source-item small {
  display: block;
}

.source-item strong {
  font-size: 0.8rem;
}

.source-item small {
  color: var(--muted);
  font-size: 0.7rem;
}

.privacy-banner {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-top: 1rem;
  padding: 1rem 1.25rem;
}

.privacy-banner strong {
  white-space: nowrap;
  color: var(--green);
}

.privacy-banner p {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.empty-state {
  color: var(--muted);
  font-size: 0.8rem;
}

#dns-probe-sink {
  display: none;
}

footer {
  display: flex;
  justify-content: space-between;
  padding: 1.25rem 0 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.75rem;
}

@media (max-width: 1050px) {
  .content-grid {
    grid-template-columns: 1fr;
  }

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

  .side-column > article:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 780px) {
  .topbar {
    padding-inline: 1rem;
  }

  .status-chip,
  .button.secondary {
    display: none;
  }

  main,
  footer {
    width: min(100% - 1.2rem, 1440px);
  }

  main {
    padding-top: 0.8rem;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .score-card {
    width: 100%;
    min-height: 112px;
    border-radius: 14px;
  }

  .score-card strong {
    font-size: 2.5rem;
  }

  .summary-grid,
  .side-column {
    grid-template-columns: 1fr;
  }

  .side-column > article:last-child {
    grid-column: auto;
  }

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

  .privacy-banner,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}