/* ------------------------------------------------------------------ */
/*  UpCheck — calm technical interface                                 */
/* ------------------------------------------------------------------ */

@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-latin-variable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("/assets/fonts/jetbrains-mono-latin-variable.woff2") format("woff2");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: light;

  --bg: #f4f7fb;
  --glow: rgba(29, 99, 232, 0.13);
  --grid-line: rgba(18, 42, 74, 0.055);

  --surface: rgba(255, 255, 255, 0.74);
  --surface-solid: #ffffff;
  --surface-soft: #eef3fa;
  --surface-hover: #e7eef8;

  --text: #0b1424;
  --muted: #52647c;
  --faint: #5b6d84;

  --border: rgba(18, 42, 74, 0.1);
  --border-strong: rgba(18, 42, 74, 0.17);

  --accent: #1d63e8;
  --accent-strong: #1450c4;
  --accent-soft: rgba(29, 99, 232, 0.1);
  --accent-contrast: #ffffff;
  --accent-2: #0f9f98;

  --up: #0b8a5b;
  --up-soft: rgba(11, 138, 91, 0.1);
  --warn: #9a5b00;
  --warn-soft: rgba(183, 106, 0, 0.1);
  --down: #c33838;
  --down-soft: rgba(195, 56, 56, 0.09);

  --shadow: 0 30px 90px -42px rgba(14, 40, 80, 0.5);
  --shadow-soft: 0 16px 44px -32px rgba(14, 40, 80, 0.38);

  --radius-xl: 26px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;

  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

[data-theme="dark"] {
  color-scheme: dark;

  --bg: #060a12;
  --glow: rgba(56, 139, 253, 0.17);
  --grid-line: rgba(128, 170, 220, 0.06);

  --surface: rgba(12, 20, 32, 0.74);
  --surface-solid: #0c1420;
  --surface-soft: #101b2a;
  --surface-hover: #142235;

  --text: #eaf1fa;
  --muted: #93a6bd;
  --faint: #71849c;

  --border: rgba(148, 180, 220, 0.12);
  --border-strong: rgba(148, 180, 220, 0.21);

  --accent: #5b9dff;
  --accent-strong: #7db2ff;
  --accent-soft: rgba(91, 157, 255, 0.13);
  --accent-contrast: #05101f;
  --accent-2: #2dd4c4;

  --up: #3ddc97;
  --up-soft: rgba(61, 220, 151, 0.1);
  --warn: #f5b83d;
  --warn-soft: rgba(245, 184, 61, 0.1);
  --down: #ff7a7a;
  --down-soft: rgba(255, 122, 122, 0.1);

  --shadow: 0 34px 100px -44px rgba(0, 0, 0, 0.92);
  --shadow-soft: 0 18px 50px -34px rgba(0, 0, 0, 0.8);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 48% at 50% -10%, var(--glow), transparent 68%),
    radial-gradient(ellipse 40% 30% at 92% 18%, rgba(45, 212, 196, 0.05), transparent 70%),
    var(--bg);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 58px 58px;
  -webkit-mask-image: radial-gradient(ellipse 92% 62% at 50% 0%, #000 8%, transparent 78%);
  mask-image: radial-gradient(ellipse 92% 62% at 50% 0%, #000 8%, transparent 78%);
}

::selection {
  background: var(--accent-soft);
  color: var(--text);
}

[hidden] {
  display: none !important;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

button,
input {
  font: inherit;
}

button {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--accent-contrast);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-150%);
  transition: transform 0.18s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ------------------------------------------------------------------ */
/*  Header                                                             */
/* ------------------------------------------------------------------ */

.site-header {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 18.5px;
  font-weight: 650;
  letter-spacing: -0.035em;
  text-decoration: none;
}

.brand img {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  box-shadow: 0 6px 18px -8px rgba(29, 99, 232, 0.65);
}

.brand-accent {
  color: var(--accent);
}

.brand-small {
  font-size: 15px;
}

.brand-small img {
  width: 24px;
  height: 24px;
  border-radius: 7px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 11px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 450;
  text-decoration: none;
  transition: color 0.18s ease, background-color 0.18s ease;
}

.nav-link:hover {
  background: var(--surface-soft);
  color: var(--text);
}

.theme-toggle {
  width: 38px;
  height: 38px;
  margin-left: 4px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--muted);
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.theme-toggle:hover {
  border-color: var(--border-strong);
  background: var(--surface-solid);
  color: var(--text);
}

.icon-sun,
.icon-moon {
  display: none;
}

[data-theme="dark"] .icon-sun,
[data-theme="light"] .icon-moon {
  display: block;
}

/* ------------------------------------------------------------------ */
/*  Hero                                                               */
/* ------------------------------------------------------------------ */

.hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 66px 28px 38px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 450;
  letter-spacing: 0.13em;
  line-height: 1;
  text-transform: uppercase;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.pulse-dot {
  position: relative;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--up);
  box-shadow: 0 0 0 3px var(--up-soft);
  flex: none;
}

.pulse-dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border: 1px solid var(--up);
  border-radius: 50%;
  opacity: 0;
  animation: pulse-out 2.4s ease-out infinite;
}

.hero h1 {
  max-width: 850px;
  margin: 24px auto 18px;
  font-size: clamp(2.7rem, 7vw, 4.7rem);
  font-weight: 660;
  letter-spacing: -0.06em;
  line-height: 0.98;
  text-wrap: balance;
}

.gradient-text {
  display: inline-block;
  background: linear-gradient(100deg, var(--accent) 8%, var(--accent-2) 92%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  max-width: 645px;
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.7vw, 1.1rem);
  line-height: 1.7;
  text-wrap: pretty;
}

/* ------------------------------------------------------------------ */
/*  Checker                                                            */
/* ------------------------------------------------------------------ */

.checker-shell {
  width: min(900px, calc(100% - 48px));
  margin: 0 auto;
}

.checker {
  position: relative;
  padding: 18px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.checker::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    135deg,
    rgba(91, 157, 255, 0.38),
    transparent 26%,
    transparent 72%,
    rgba(45, 212, 196, 0.24)
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

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

.input-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px;
  border: 1px solid var(--border);
  border-radius: 17px;
  background: var(--bg);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.input-row:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.input-icon {
  width: 38px;
  flex: none;
  display: grid;
  place-items: center;
  color: var(--faint);
}

#url-input {
  flex: 1;
  min-width: 0;
  height: 46px;
  padding: 0 4px;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--text);
  font-size: 16px;
  font-weight: 450;
  letter-spacing: -0.01em;
}

#url-input::placeholder {
  color: var(--faint);
  opacity: 1;
}

.check-button {
  min-width: 132px;
  height: 48px;
  padding: 0 22px;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: var(--accent-contrast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 650;
  letter-spacing: -0.01em;
  white-space: nowrap;
  cursor: pointer;
  box-shadow: 0 10px 24px -12px rgba(29, 99, 232, 0.75);
  transition: background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.check-button:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
  box-shadow: 0 14px 28px -12px rgba(29, 99, 232, 0.72);
}

.check-button:active {
  transform: translateY(0);
}

.check-button:disabled {
  cursor: wait;
  opacity: 0.78;
  transform: none;
}

.spinner {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.checker.is-loading .button-label {
  display: none;
}

.checker.is-loading .spinner {
  display: inline-block;
}

.form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
  flex-wrap: wrap;
  margin: 12px 4px 1px;
}

.hint {
  margin: 0;
  color: var(--faint);
  font-size: 11px;
  line-height: 1.4;
}

.examples {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  color: var(--faint);
  font-size: 11px;
}

.examples > span {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.example-button {
  padding: 1px 0;
  border: 0;
  border-bottom: 1px dotted transparent;
  background: transparent;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10.5px;
  cursor: pointer;
  transition: border-color 0.18s ease;
}

.example-button:hover {
  border-bottom-color: var(--accent);
}

.form-error {
  margin: 14px 4px 0;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--down);
  border-radius: var(--radius-sm);
  background: var(--down-soft);
  color: var(--text);
  font-size: 12.5px;
  line-height: 1.55;
}

.status-region {
  margin-top: 1px;
}

/* Empty state ------------------------------------------------------ */

.empty-state {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.empty-feature {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  padding: 3px 14px;
}

.empty-feature:first-child {
  padding-left: 4px;
}

.empty-feature + .empty-feature {
  border-left: 1px solid var(--border);
}

.feature-icon {
  width: 30px;
  height: 30px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
}

.empty-feature strong,
.empty-feature small {
  display: block;
}

.empty-feature strong {
  color: var(--text);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.empty-feature small {
  margin-top: 1px;
  color: var(--faint);
  font-size: 10px;
}

/* Loading ---------------------------------------------------------- */

.loading-state {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 16px;
  padding: 17px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  animation: rise 0.25s ease both;
}

.scanner {
  position: relative;
  width: 48px;
  height: 48px;
  flex: none;
  display: grid;
  place-items: center;
}

.scanner span {
  position: absolute;
  inset: 0;
  border: 1px solid var(--accent);
  border-radius: 50%;
  opacity: 0;
  animation: scan 2.2s ease-out infinite;
}

.scanner span:nth-child(2) {
  animation-delay: 1.1s;
}

.scanner i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px var(--accent-soft);
}

.loading-copy {
  min-width: 0;
}

.loading-copy p {
  margin: 0;
  font-size: 13px;
  line-height: 1.45;
}

#loading-host {
  color: var(--text);
  font-weight: 500;
  overflow-wrap: anywhere;
}

.loading-sub {
  margin-top: 2px !important;
  color: var(--muted);
  font-size: 11.5px !important;
}

.loading-timer {
  margin-left: auto;
  display: flex;
  align-items: baseline;
  gap: 2px;
  flex: none;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 18px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
}

.loading-timer span:last-child {
  color: var(--faint);
  font-size: 10px;
  letter-spacing: 0;
}

/* Result ----------------------------------------------------------- */

.result {
  margin-top: 16px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface-solid);
  box-shadow: var(--shadow-soft);
  animation: rise 0.35s ease both;
}

.result:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.result-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.result-id {
  min-width: 0;
}

.verdict-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--up-soft);
  color: var(--up);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1;
  text-transform: uppercase;
}

.verdict-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 3px var(--up-soft);
}

.result[data-verdict="issue"] .verdict-pill {
  background: var(--warn-soft);
  color: var(--warn);
}

.result[data-verdict="issue"] .verdict-dot {
  box-shadow: 0 0 0 3px var(--warn-soft);
}

.result[data-verdict="down"] .verdict-pill {
  background: var(--down-soft);
  color: var(--down);
}

.result[data-verdict="down"] .verdict-dot {
  box-shadow: 0 0 0 3px var(--down-soft);
}

.result-title {
  margin: 10px 0 2px;
  color: var(--text);
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.result-sub {
  margin: 0;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 10.5px;
  line-height: 1.5;
}

.result-answer {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 18px 0 0;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--up);
  border-radius: 10px;
  background: var(--up-soft);
  color: var(--text);
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.4;
}

.result-answer-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--up);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.result[data-verdict="issue"] .result-answer {
  border-left-color: var(--warn);
  background: var(--warn-soft);
}

.result[data-verdict="issue"] .result-answer-icon {
  background: var(--warn);
}

.result[data-verdict="down"] .result-answer {
  border-left-color: var(--down);
  background: var(--down-soft);
}

.result[data-verdict="down"] .result-answer-icon {
  background: var(--down);
}

.result-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  padding-top: 2px;
}

.action-button {
  height: 32px;
  padding: 0 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.action-button:hover {
  border-color: var(--border-strong);
  background: var(--surface-soft);
  color: var(--text);
}

.action-button.is-flashing {
  border-color: var(--accent);
  color: var(--accent);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 18px;
}

.metric {
  min-width: 0;
  min-height: 92px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 6px;
}

.metric-label {
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.11em;
  line-height: 1.2;
  text-transform: uppercase;
}

.metric-value {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 23px;
  font-weight: 450;
  letter-spacing: -0.045em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.metric-unit {
  margin-left: 1px;
  color: var(--muted);
  font-size: 9.5px;
  letter-spacing: 0;
}

.metric-value-ip {
  font-size: 14px;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.metric-sub {
  color: var(--muted);
  font-size: 10px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.result-notes {
  display: grid;
  gap: 6px;
  margin-top: 14px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--warn);
  border-radius: var(--radius-sm);
  background: var(--warn-soft);
  color: var(--text);
  font-size: 12px;
  line-height: 1.55;
}

.result[data-verdict="up"] .result-notes {
  border-left-color: var(--up);
  background: var(--up-soft);
}

.result[data-verdict="down"] .result-notes {
  border-left-color: var(--down);
  background: var(--down-soft);
}

.result-notes p {
  margin: 0;
}

.result-details {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.result-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 3px 0;
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 500;
  list-style: none;
  cursor: pointer;
  transition: color 0.18s ease;
}

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

.result-details summary:hover {
  color: var(--text);
}

.result-details summary::after {
  content: "+";
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
}

.result-details[open] summary::after {
  content: "−";
}

.detail-list {
  margin: 8px 0 0;
}

.detail-row {
  display: grid;
  grid-template-columns: 142px minmax(0, 1fr);
  gap: 14px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--border);
}

.detail-row:last-child {
  border-bottom: 0;
}

.detail-row dt {
  color: var(--faint);
  font-size: 10.5px;
  line-height: 1.6;
}

.detail-row dd {
  margin: 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10.5px;
  line-height: 1.6;
  text-align: right;
  overflow-wrap: anywhere;
}

.detail-row dd a {
  color: var(--accent);
  text-decoration: none;
}

.detail-row dd a:hover {
  text-decoration: underline;
}

.redirect-wrap {
  margin-top: 14px;
}

.redirect-wrap h4 {
  margin: 0 0 8px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 8.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.redirect-list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.redirect-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  min-width: 0;
  padding: 7px 8px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface-soft);
}

.redirect-status {
  flex: none;
  padding: 2px 5px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1.4;
}

.redirect-url {
  min-width: 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

/* ------------------------------------------------------------------ */
/*  Advertisement slot                                                 */
/* ------------------------------------------------------------------ */

.ad-slot {
  width: min(900px, calc(100% - 48px));
  margin: 30px auto 0;
}

.ad-label {
  display: block;
  margin-bottom: 6px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.15em;
  text-align: center;
  text-transform: uppercase;
}

.ad-unit {
  display: block;
  min-height: 90px;
}

/* ------------------------------------------------------------------ */
/*  Content sections                                                   */
/* ------------------------------------------------------------------ */

.section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 88px 28px 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: 28px;
}

.section-kicker {
  margin: 0;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-head h2 {
  margin: 9px 0 11px;
  font-size: clamp(1.6rem, 3.2vw, 2.15rem);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1.12;
  text-wrap: balance;
}

.section-head p:not(.section-kicker) {
  max-width: 610px;
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.7;
}

/* Steps ------------------------------------------------------------ */

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step {
  padding: 20px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.step-number {
  display: block;
  margin-bottom: 20px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.step h3 {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.step code {
  padding: 1px 4px;
  border-radius: 4px;
  background: var(--surface-soft);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* Verdict guide ---------------------------------------------------- */

.verdict-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.verdict-card {
  padding: 20px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.status-dot {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--up);
  box-shadow: 0 0 0 4px var(--up-soft);
}

.verdict-card[data-tone="warn"] .status-dot {
  background: var(--warn);
  box-shadow: 0 0 0 4px var(--warn-soft);
}

.verdict-card[data-tone="down"] .status-dot {
  background: var(--down);
  box-shadow: 0 0 0 4px var(--down-soft);
}

.verdict-card h3 {
  margin: 16px 0 6px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.verdict-card p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

/* FAQ -------------------------------------------------------------- */

.faq-section {
  max-width: 880px;
}

.faq-list {
  border-top: 1px solid var(--border);
}

.faq-list details {
  border-bottom: 1px solid var(--border);
}

.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 0;
  color: var(--text);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: -0.01em;
  list-style: none;
  cursor: pointer;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  flex: none;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  transition: color 0.18s ease;
}

.faq-list details[open] summary::after {
  content: "−";
  color: var(--accent);
}

.faq-list details p {
  max-width: 720px;
  margin: -3px 0 18px;
  padding-right: 28px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.7;
}

.faq-list details p a {
  color: var(--accent);
}

/* ------------------------------------------------------------------ */
/*  Footer                                                             */
/* ------------------------------------------------------------------ */

.site-footer {
  margin-top: 96px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1050px;
  margin: 0 auto;
  padding: 36px 28px 22px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
}

.footer-brand p {
  max-width: 320px;
  margin: 11px 0 0;
  color: var(--faint);
  font-size: 11.5px;
  line-height: 1.65;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 18px;
  padding-top: 3px;
}

.footer-links a {
  color: var(--muted);
  font-size: 11.5px;
  text-decoration: none;
  transition: color 0.18s ease;
}

.footer-links a:hover {
  color: var(--text);
}

.footer-bottom {
  max-width: 1050px;
  margin: 0 auto;
  padding: 18px 28px 38px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  flex-wrap: wrap;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.01em;
}

/* ------------------------------------------------------------------ */
/*  Legal pages                                                        */
/* ------------------------------------------------------------------ */

.legal-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 28px 24px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 28px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.18s ease;
}

.back-link:hover {
  color: var(--text);
}

.legal-page h1 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 660;
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.legal-meta {
  margin: 0 0 34px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 10px;
}

.legal-page h2 {
  margin: 32px 0 8px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.legal-page p,
.legal-page li {
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.75;
}

.legal-page p {
  margin: 0 0 12px;
}

.legal-page ul {
  margin: 0 0 14px;
  padding-left: 18px;
}

.legal-page li {
  margin-bottom: 5px;
}

.legal-page a {
  color: var(--accent);
}

.legal-callout {
  margin: 18px 0;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
}

.legal-callout p:last-child {
  margin-bottom: 0;
}

@media (max-width: 540px) {
  .legal-page {
    padding: 34px 20px 20px;
  }
}

/* ------------------------------------------------------------------ */
/*  Not found                                                          */
/* ------------------------------------------------------------------ */

.not-found {
  min-height: 62vh;
  padding: 64px 24px;
  display: grid;
  place-content: center;
  justify-items: center;
  text-align: center;
}

.not-found h1 {
  max-width: 620px;
  margin: 14px 0 12px;
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 660;
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.not-found p:not(.section-kicker) {
  max-width: 440px;
  margin: 0 0 26px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.not-found .check-button {
  display: inline-flex;
  text-decoration: none;
}

/* ------------------------------------------------------------------ */
/*  Motion                                                             */
/* ------------------------------------------------------------------ */

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

@keyframes pulse-out {
  0% {
    transform: scale(0.7);
    opacity: 0.65;
  }
  75%,
  100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

@keyframes scan {
  0% {
    transform: scale(0.36);
    opacity: 0.7;
  }
  100% {
    transform: scale(1);
    opacity: 0;
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(7px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ------------------------------------------------------------------ */
/*  Responsive                                                         */
/* ------------------------------------------------------------------ */

@media (max-width: 800px) {
  .steps,
  .verdict-grid {
    grid-template-columns: 1fr;
  }

  .step-number {
    margin-bottom: 12px;
  }

  .section {
    padding-top: 72px;
  }
}

@media (max-width: 720px) {
  .site-header {
    padding: 18px 20px;
  }

  .nav-link {
    display: none;
  }

  .hero {
    padding: 50px 20px 30px;
  }

  .checker-shell {
    width: calc(100% - 32px);
  }

  .checker {
    padding: 13px;
    border-radius: 22px;
  }

  .empty-state {
    display: none;
  }

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

  .metric-value {
    font-size: 21px;
  }

  .detail-row {
    grid-template-columns: 122px minmax(0, 1fr);
  }

  .footer-inner {
    flex-direction: column;
    gap: 22px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .ad-slot {
    width: calc(100% - 32px);
  }
}

@media (max-width: 540px) {
  .site-header {
    padding: 16px;
  }

  .hero {
    padding-top: 40px;
  }

  .hero h1 {
    margin-top: 20px;
    letter-spacing: -0.055em;
  }

  .checker-shell {
    width: calc(100% - 24px);
  }

  .input-row {
    display: grid;
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 2px 4px;
  }

  .check-button {
    grid-column: 1 / -1;
    width: 100%;
    margin-top: 2px;
  }

  .form-foot {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
  }

  .loading-state {
    align-items: flex-start;
    gap: 12px;
  }

  .loading-timer {
    margin-left: 0;
    font-size: 15px;
  }

  .loading-copy p {
    font-size: 12.5px;
  }

  .result {
    padding: 16px;
  }

  .result-head {
    flex-direction: column;
  }

  .result-actions {
    width: 100%;
  }

  .action-button {
    flex: 1;
  }

  .metric {
    min-height: 86px;
    padding: 11px;
  }

  .metric-value {
    font-size: 20px;
  }

  .metric-value-ip {
    font-size: 12.5px;
  }

  .detail-row {
    grid-template-columns: 1fr;
    gap: 1px;
    padding: 8px 0;
  }

  .detail-row dd {
    text-align: left;
  }

  .section {
    padding: 64px 20px 0;
  }

  .footer-inner {
    padding: 30px 20px 20px;
  }

  .footer-bottom {
    padding: 16px 20px 32px;
  }

  .ad-slot {
    width: calc(100% - 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}