/* FreeToolsLab — shared tool styles. Colours ONLY via tokens.css variables. */
*,
*::before,
*::after {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
}
body:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}
h1,
h2,
h3 {
  font-family: var(--font-mono);
  font-weight: 500;
  line-height: 1.2;
  margin: 0;
}
h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
}
h2 {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
}
p {
  margin: 0;
}
a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.num {
  font-variant-numeric: tabular-nums;
}
.muted {
  color: var(--muted);
}

/* layout */
.tool {
  max-width: 64rem;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 640px) {
  .tool {
    padding: 2rem 1.5rem 4rem;
  }
}
.grid-2 {
  display: grid;
  gap: 1rem;
}
@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}
.row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

/* header */
.tool-header {
  display: grid;
  gap: 0.5rem;
}
.tool-header .row {
  justify-content: space-between;
}
.tagline {
  color: var(--muted);
  font-size: 1.0625rem;
}
.privacy {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  border-left: 2px solid var(--go);
  padding-left: 0.75rem;
}

/* pill */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  border: 1px solid var(--go);
  color: var(--go);
  background: var(--go-soft);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  white-space: nowrap;
}
.pill::before {
  content: "";
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 50%;
  background: var(--go);
}
.pill--warn {
  border-color: var(--warn);
  color: var(--warn);
  background: var(--warn-soft);
}
.pill--warn::before {
  background: var(--warn);
}

/* cards */
.card {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1rem;
  display: grid;
  gap: 0.75rem;
}
.result {
  display: grid;
  gap: 0.25rem;
}
.result .label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}
.result .value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-variant-numeric: tabular-nums;
}
.result--go .value {
  color: var(--go);
}
.result--stop .value {
  color: var(--stop);
}
.result--warn .value {
  color: var(--warn);
}

/* fields */
.field {
  display: grid;
  gap: 0.375rem;
}
.field label {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--muted);
}
.field .hint {
  font-size: 0.75rem;
  color: var(--muted);
}
.input,
.select,
.textarea {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--rule-2);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 0.5rem 0.625rem;
  font: inherit;
  font-variant-numeric: tabular-nums;
}
.input-unit {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.5rem;
}
.input-unit .unit {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  min-width: 3ch;
}
.range {
  width: 100%;
  accent-color: var(--go);
}
.toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--rule-2);
  background: var(--panel);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s ease;
}
.btn:hover {
  border-color: var(--link);
}
.btn--primary {
  border-color: var(--go);
  color: var(--go);
  background: var(--go-soft);
}
.btn--ghost {
  border-color: transparent;
  background: transparent;
  color: var(--muted);
}

/* visual */
.visual {
  width: 100%;
  height: auto;
  display: block;
}
.visual .bar {
  transition: width 0.4s ease, x 0.4s ease;
}
.visual text {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  fill: var(--ink);
}
.visual .axis {
  stroke: var(--rule-2);
}

/* assumptions */
.assumptions {
  font-size: 0.875rem;
  color: var(--muted);
}
.assumptions ul {
  margin: 0;
  padding-left: 1.125rem;
  display: grid;
  gap: 0.25rem;
}
.assumptions code {
  font-family: var(--font-mono);
  color: var(--ink);
  font-size: 0.8125rem;
}

/* credit */
.credit {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  border-top: 1px solid var(--rule);
  padding-top: 1rem;
  display: grid;
  gap: 0.375rem;
}
.credit a {
  color: var(--muted);
}
.credit a:hover {
  color: var(--ink);
}

/* OG view (?og=1) — 1200x630 for Playwright */
.og {
  display: none;
}
body[data-og="1"] .tool {
  display: none;
}
body[data-og="1"] .og {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 1200px;
  height: 630px;
  padding: 64px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-mono);
}
.og h1 {
  font-size: 64px;
}
.og .tagline {
  font-size: 30px;
  font-family: var(--font-sans);
  margin-top: 20px;
  max-width: 1000px;
}
.og .foot {
  display: flex;
  justify-content: space-between;
  font-size: 24px;
  color: var(--muted);
}

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

/* theme toggle labels (CSS-only, no JS coupling) */
.when-dark {
  display: none;
}
:root[data-theme="dark"] .when-dark {
  display: inline;
}
:root[data-theme="dark"] .when-light {
  display: none;
}