/* Hallmark · macrostructure: Workbench · tone: calm operational · anchor hue: blue
 * nav: N9 · footer: Ft2 · contrast: pass (40–41) · slop: pass (42–45)
 * honest: pass (46) · chrome: pass (47) · tokens: pass (48) · responsive: pass (49)
 * icons: pass (30) · mobile: pass (34, 49, 50–57)
 */
/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V4 */
@import url("/tokens.css");

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

html,
body {
  margin: 0;
  min-width: 0;
  overflow-x: clip;
  background: var(--color-page);
}

html {
  scroll-behavior: smooth;
  scrollbar-color: var(--color-scroll-thumb) var(--color-scroll-track);
}

body {
  min-height: 100vh;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  transition: background-color var(--dur-medium) var(--ease-in-out), color var(--dur-medium) var(--ease-in-out);
}

::selection {
  background: var(--color-selection);
  color: var(--color-ink);
}

button,
input,
summary,
a {
  -webkit-tap-highlight-color: transparent;
}

button,
input {
  font: inherit;
}

button,
summary,
a {
  touch-action: manipulation;
}

a {
  color: var(--color-accent);
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--color-accent-hover);
}

:focus-visible {
  outline: var(--rule-focus) solid var(--color-focus);
  outline-offset: var(--space-1);
}

[hidden] {
  display: none !important;
}

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

.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 10;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  background: var(--color-ink);
  color: var(--color-page);
  font-weight: 700;
  transform: translateY(-160%);
}

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

.site-header,
main,
.site-footer {
  width: min(100% - var(--space-8), 72rem);
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5.5rem;
  border-bottom: var(--rule-thin) solid var(--color-rule);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1;
  text-decoration: none;
}

.brand:hover {
  color: var(--color-ink);
}

.brand__mark {
  width: 2.5rem;
  height: 2.5rem;
  margin-right: var(--space-2);
  color: var(--color-accent);
}

.brand__cloud {
  fill: var(--color-neutral-soft);
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 2.6;
}

.brand__pulse {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.6;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 5.6rem;
  min-height: 2.75rem;
  padding: var(--space-2) var(--space-4);
  border: var(--rule-thin) solid var(--color-rule-strong);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-ink-soft);
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1;
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), transform var(--dur-instant) var(--ease-out);
}

.theme-toggle:hover {
  background: var(--color-surface-soft);
  color: var(--color-ink);
}

.theme-toggle:active {
  transform: translateY(1px);
}

.theme-toggle svg {
  width: 1.15rem;
  height: 1.15rem;
  margin-right: var(--space-2);
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.8;
}

.checker {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  width: min(100%, 58rem);
  min-height: min(43rem, calc(100vh - 5.5rem));
  margin-inline: auto;
  padding-block-start: clamp(var(--space-16), 8vw, var(--space-20));
  padding-block-end: clamp(var(--space-24), 12vw, var(--space-32));
  align-content: center;
}

.checker__heading {
  margin-bottom: var(--space-10);
}

h1,
h2,
p {
  min-width: 0;
}

h1,
h2 {
  margin-top: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
  overflow-wrap: anywhere;
}

h1 {
  max-width: 12ch;
  margin-bottom: var(--space-5);
  font-size: var(--text-display);
}

.checker__heading > p {
  max-width: 48ch;
  margin: 0;
  color: var(--color-ink-soft);
  font-size: var(--text-xl);
  line-height: 1.45;
}

.check-form label {
  display: block;
  margin-bottom: var(--space-3);
  color: var(--color-ink);
  font-weight: 700;
}

.check-form__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  min-height: 4.5rem;
  padding: var(--space-2);
  border: var(--rule-thin) solid var(--color-rule-strong);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  transition: border-color var(--dur-short) var(--ease-out);
}

.check-form__row:focus-within {
  border-color: var(--color-focus);
}

.check-form__prefix {
  padding-left: var(--space-4);
  color: var(--color-ink-faint);
  font-weight: 600;
  user-select: none;
}

.check-form input {
  width: 100%;
  min-width: 0;
  height: 3.5rem;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--color-ink);
  caret-color: var(--color-accent);
  font-size: var(--text-lg);
  font-weight: 600;
}

.check-form input:focus-visible {
  border-radius: var(--radius-sm);
  outline: var(--rule-focus) solid var(--color-focus);
  outline-offset: var(--rule-focus-inset);
}

.check-form input::placeholder {
  color: var(--color-ink-faint);
  opacity: 1;
}

.primary-button,
.secondary-button {
  min-height: 3.5rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out), transform var(--dur-instant) var(--ease-out);
}

.primary-button {
  min-width: 8.5rem;
  padding-inline: var(--space-6);
  border: var(--rule-thin) solid var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.primary-button:hover {
  border-color: var(--color-accent-hover);
  background: var(--color-accent-hover);
}

.primary-button:active,
.secondary-button:active {
  transform: translateY(1px);
}

.primary-button:disabled,
.secondary-button:disabled,
.theme-toggle:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.primary-button__loading {
  display: none;
}

.primary-button[data-loading="true"] .primary-button__idle {
  display: none;
}

.primary-button[data-loading="true"] .primary-button__loading {
  display: inline;
}

.form-help,
.form-error {
  margin: var(--space-3) 0 0;
  font-size: var(--text-sm);
}

.form-help {
  color: var(--color-ink-soft);
}

.form-error {
  min-height: 1lh;
  color: var(--color-danger);
  font-weight: 600;
}

.result {
  margin-top: var(--space-8);
  padding: clamp(var(--space-6), 5vw, var(--space-10));
  border-radius: var(--radius-lg);
  background: var(--color-success-soft);
  color: var(--color-success-ink);
  animation: result-in var(--dur-long) var(--ease-out) both;
}

.result[data-status="possible"] {
  background: var(--color-warning-soft);
  color: var(--color-warning-ink);
}

.result[data-status="down"],
.result[data-status="error"] {
  background: var(--color-danger-soft);
  color: var(--color-danger-ink);
}

@keyframes result-in {
  from { opacity: 0; transform: translateY(var(--space-2)); }
  to { opacity: 1; transform: translateY(0); }
}

.result__answer {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
}

.status-symbol {
  display: grid;
  width: 3.25rem;
  height: 3.25rem;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--color-success);
  color: var(--color-accent-ink);
}

[data-theme="dark"] .status-symbol {
  color: var(--color-page);
}

.result[data-status="possible"] .status-symbol {
  background: var(--color-warning);
}

.result[data-status="down"] .status-symbol,
.result[data-status="error"] .status-symbol {
  background: var(--color-danger);
}

.status-symbol__icon {
  width: 1.75rem;
  height: 1.75rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.3;
}

.result__site {
  margin: 0 0 var(--space-1);
  font-size: var(--text-sm);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.result h2 {
  margin-bottom: var(--space-2);
  color: currentColor;
  font-size: var(--text-2xl);
}

.result__copy > p:last-child {
  max-width: 55ch;
  margin: 0;
}

.result__actions {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: var(--rule-thin) solid currentColor;
}

.secondary-button {
  padding-inline: var(--space-5);
  border: var(--rule-thin) solid currentColor;
  background: transparent;
  color: currentColor;
}

.secondary-button:hover {
  background: var(--color-surface);
  color: var(--color-ink);
}

.technical-details {
  min-width: 0;
}

.technical-details summary {
  min-height: 2.75rem;
  padding: var(--space-2) 0;
  cursor: pointer;
  font-weight: 700;
  white-space: nowrap;
}

.technical-details dl {
  display: grid;
  gap: var(--space-2);
  min-width: min(28rem, 75vw);
  margin: var(--space-4) 0 0;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.technical-details dl > div {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: var(--space-3);
}

.technical-details dt {
  color: var(--color-ink-soft);
}

.technical-details dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.result-help {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: var(--rule-thin) solid currentColor;
}

.result-help p {
  margin: 0 0 var(--space-2);
}

.result-help__title {
  font-weight: 700;
}

.result-help a {
  color: currentColor;
  font-weight: 700;
}

.ad-slot,
.affiliate-offer {
  margin-top: var(--space-6);
  padding: var(--space-4);
  border: var(--rule-thin) dashed var(--color-rule-strong);
  border-radius: var(--radius-md);
  color: var(--color-ink-faint);
  text-align: center;
}

.ad-slot span {
  display: block;
  margin-bottom: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ad-slot p {
  margin: 0;
  font-size: var(--text-sm);
}

.ad-slot a,
.affiliate-offer a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  font-weight: 700;
  white-space: nowrap;
}

.affiliate-offer {
  border-style: solid;
  background: var(--color-surface);
  color: var(--color-ink-soft);
  text-align: left;
}

.affiliate-offer p {
  margin: 0 0 var(--space-2);
}

.affiliate-offer__title {
  color: var(--color-ink);
  font-weight: 700;
}

.affiliate-offer small {
  display: block;
  color: var(--color-ink-faint);
}

.recent,
.explanation,
.faq {
  border-top: var(--rule-thin) solid var(--color-rule);
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.section-heading h2,
.explanation h2,
.faq h2 {
  margin-bottom: 0;
  font-size: var(--text-2xl);
}

.section-heading p {
  margin: 0;
  color: var(--color-ink-soft);
}

.recent__empty {
  padding-block: var(--space-10);
  border-top: var(--rule-thin) solid var(--color-rule);
  border-bottom: var(--rule-thin) solid var(--color-rule);
}

.recent__empty p,
.recent__empty span {
  margin: 0;
}

.recent__empty p {
  color: var(--color-ink);
  font-weight: 700;
}

.recent__empty span {
  color: var(--color-ink-soft);
}

.recent__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--rule-thin) solid var(--color-rule);
}

.recent__list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: var(--space-6);
  align-items: center;
  min-height: 4.5rem;
  border-bottom: var(--rule-thin) solid var(--color-rule);
}

.recent__domain {
  color: var(--color-ink);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.recent__time {
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
}

.recent__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-success-ink);
  font-size: var(--text-sm);
  font-weight: 700;
  white-space: nowrap;
}

.recent__badge::before {
  width: var(--space-2);
  height: var(--space-2);
  border-radius: var(--radius-pill);
  background: var(--color-success);
  content: "";
}

.recent__badge[data-status="possible"] {
  color: var(--color-warning-ink);
}

.recent__badge[data-status="possible"]::before {
  background: var(--color-warning);
}

.recent__badge[data-status="down"],
.recent__badge[data-status="error"] {
  color: var(--color-danger-ink);
}

.recent__badge[data-status="down"]::before,
.recent__badge[data-status="error"]::before {
  background: var(--color-danger);
}

.explanation {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(var(--space-10), 8vw, var(--space-24));
}

.explanation__lead p {
  max-width: 60ch;
  margin: var(--space-5) 0 0;
  color: var(--color-ink-soft);
  font-size: var(--text-lg);
}

.plain-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.plain-steps li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: var(--space-4);
  padding-block: var(--space-5);
  border-bottom: var(--rule-thin) solid var(--color-rule);
}

.plain-steps li:first-child {
  border-top: var(--rule-thin) solid var(--color-rule);
}

.plain-steps span {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--color-neutral-soft);
  color: var(--color-neutral-ink);
  font-size: var(--text-sm);
  font-weight: 700;
}

.plain-steps p {
  margin: var(--space-1) 0 0;
  color: var(--color-ink-soft);
}

.plain-steps strong {
  color: var(--color-ink);
}

.faq {
  display: grid;
  grid-template-columns: minmax(0, 0.35fr) minmax(0, 0.65fr);
  gap: clamp(var(--space-10), 8vw, var(--space-24));
}

.faq__list {
  border-top: var(--rule-thin) solid var(--color-rule);
}

.faq details {
  border-bottom: var(--rule-thin) solid var(--color-rule);
}

.faq summary {
  min-height: 4rem;
  padding: var(--space-5) var(--space-8) var(--space-5) 0;
  cursor: pointer;
  color: var(--color-ink);
  font-weight: 700;
}

.faq details[open] summary {
  color: var(--color-accent);
}

.faq details p {
  max-width: 62ch;
  margin: 0 0 var(--space-6);
  color: var(--color-ink-soft);
}

.site-footer {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-6);
  align-items: center;
  min-height: 8rem;
  border-top: var(--rule-thin) solid var(--color-rule);
  color: var(--color-ink-soft);
}

.brand--footer {
  font-size: var(--text-base);
}

.brand--footer .brand__mark {
  width: 2rem;
  height: 2rem;
}

.site-footer p {
  margin: 0;
}

.site-footer__legal {
  font-size: var(--text-sm);
}

@media (max-width: 48rem) {
  .site-header,
  main,
  .site-footer {
    width: min(100% - var(--space-6), 72rem);
  }

  .checker {
    min-height: auto;
    padding-block: var(--space-16) var(--space-24);
  }

  .section-heading,
  .explanation,
  .faq {
    grid-template-columns: minmax(0, 1fr);
  }

  .section-heading {
    display: grid;
    align-items: start;
    gap: var(--space-2);
  }

  .explanation,
  .faq {
    gap: var(--space-8);
  }

  .site-footer {
    grid-template-columns: minmax(0, 1fr) auto;
    padding-block: var(--space-6);
  }

  .site-footer > p:not(.site-footer__legal) {
    display: none;
  }
}

@media (max-width: 36rem) {
  .brand {
    font-size: var(--text-base);
  }

  .brand__mark {
    width: 2.15rem;
    height: 2.15rem;
  }

  .theme-toggle {
    min-width: 2.75rem;
    padding-inline: var(--space-3);
  }

  .theme-toggle svg {
    margin-right: 0;
  }

  .theme-toggle__label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  .checker__heading {
    margin-bottom: var(--space-8);
  }

  .checker__heading > p {
    font-size: var(--text-lg);
  }

  .check-form__row {
    grid-template-columns: auto minmax(0, 1fr);
    padding: var(--space-2);
  }

  .check-form__prefix {
    padding-left: var(--space-2);
    font-size: var(--text-sm);
  }

  .check-form input {
    height: 3rem;
    font-size: var(--text-base);
  }

  .primary-button {
    grid-column: 1 / -1;
    width: 100%;
    margin-top: var(--space-2);
  }

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

  .result__actions {
    align-items: stretch;
    flex-direction: column;
  }

  .secondary-button {
    width: 100%;
  }

  .technical-details summary {
    display: flex;
    align-items: center;
  }

  .technical-details dl {
    min-width: 0;
  }

  .technical-details dl > div {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .recent__list li {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-2) var(--space-4);
    padding-block: var(--space-4);
  }

  .recent__time {
    grid-column: 1;
    grid-row: 2;
  }

  .recent__badge {
    grid-column: 2;
    grid-row: 1 / span 2;
  }
}

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

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