/* All tokens, spacing, colour and type come from unified tokens (src/routes/tokens.ts). */

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

body {
  margin: 0;
  /* min-inline-size on the body is what actually stops a long unbroken
     string (a feed URL) from widening the viewport on a narrow phone. */
  min-inline-size: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

.page {
  inline-size: 100%;
  max-inline-size: var(--page);
  margin-inline: auto;
  padding-inline: var(--space-4);
  padding-block: var(--space-8) var(--space-12);
}

h1,
h2,
h3 {
  line-height: 1.2;
  text-wrap: balance;
  margin-block: 0 var(--space-3);
}
h1 {
  font-size: clamp(1.75rem, 1.3rem + 2.2vw, 2.75rem);
  letter-spacing: -0.02em;
}
h2 {
  font-size: clamp(1.25rem, 1.1rem + 0.8vw, 1.5rem);
  margin-block-start: var(--space-8);
}
h3 {
  font-size: 1.05rem;
}
p {
  max-inline-size: var(--measure);
  margin-block: 0 var(--space-4);
}
a {
  color: inherit;
  text-underline-offset: 0.2em;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.lede {
  font-size: 1.125em;
  color: var(--text-muted);
}

/* ---- layout ---------------------------------------------------------- */
.cards {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  padding: 0;
  margin-block: var(--space-4) 0;
  list-style: none;
}

.card {
  /* Without min-inline-size:0 a grid item refuses to shrink below its
     content, which is how a code sample pushes a phone layout sideways. */
  min-inline-size: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
}
.card p:last-child {
  margin-block-end: 0;
}
.card .voices {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-block-end: 0;
}

/* ---- code ------------------------------------------------------------ */
code,
kbd,
samp,
pre {
  font-family: var(--mono);
  font-size: 0.875em;
}
code {
  background: var(--surface-sunken);
  border-radius: 4px;
  padding: 0.15em 0.4em;
  /* A feed URL has no spaces; without this it is a single unbreakable word. */
  overflow-wrap: anywhere;
}
pre {
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
  margin-block: var(--space-3) var(--space-4);
  /* Scroll the block, never the page. */
  overflow-x: auto;
  max-inline-size: 100%;
}
pre code {
  background: none;
  padding: 0;
  overflow-wrap: normal;
}

.urls {
  list-style: none;
  padding: 0;
  margin-block: var(--space-3) var(--space-4);
}
.urls li {
  margin-block-end: var(--space-2);
}
.urls .what {
  color: var(--text-muted);
  font-size: 0.875rem;
  display: block;
}

/* ---- form ------------------------------------------------------------ */
form {
  margin-block-start: var(--space-4);
}

.field {
  margin-block-end: var(--space-4);
  max-inline-size: var(--measure);
}
.field > label,
fieldset > legend {
  display: block;
  font-weight: 600;
  margin-block-end: var(--space-1);
}
.hint {
  display: block;
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-block-end: var(--space-2);
}

input[type="url"],
input[type="password"] {
  inline-size: 100%;
  font: inherit;
  font-size: max(1rem, 1em); /* >=16px: smaller text makes iOS zoom on focus. */
  padding: var(--space-2) var(--space-3);
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
  margin: 0 0 var(--space-4);
  max-inline-size: var(--measure);
  min-inline-size: 0; /* fieldsets ignore flex/grid shrinking without this */
}
fieldset legend {
  padding-inline: var(--space-2);
}

.choice {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding-block: var(--space-2);
}
.choice input {
  margin-block-start: 0.3em;
  flex: none;
}
.choice .what {
  display: block;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/*
  Errors appear only after the user has interacted, never on load.
  Two indicators, not one: colour alone is not a usable signal.
*/
.error {
  display: none;
  color: var(--danger);
  font-size: 0.875rem;
  margin-block-start: var(--space-1);
}
input:user-invalid,
input.is-invalid {
  border-color: var(--danger);
  border-width: 2px;
}
input:user-invalid ~ .error,
input.is-invalid ~ .error {
  display: block;
}

button[type="submit"] {
  font: inherit;
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  color: var(--accent-text);
  background: var(--accent);
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  min-block-size: 44px; /* comfortable touch target */
}
button[type="submit"]:hover {
  filter: brightness(1.1);
}
button[type="submit"][aria-disabled="true"] {
  opacity: 0.6;
  cursor: progress;
}

#result,
#feed-result,
#request-result {
  margin-block-start: var(--space-4);
  max-inline-size: var(--measure);
  overflow-wrap: anywhere;
}
#result:not(:empty),
#feed-result:not(:empty),
#request-result:not(:empty) {
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-inline-start: 4px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
#result.ok,
#feed-result.ok,
#request-result.ok {
  border-inline-start-color: var(--ok);
}
#result.bad,
#feed-result.bad,
#request-result.bad {
  border-inline-start-color: var(--danger);
}
#result p,
#feed-result p,
#request-result p {
  margin: 0;
}
#result .detail,
#feed-result .detail,
#request-result .detail {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-block-start: var(--space-1);
}

.note {
  background: var(--surface-sunken);
  border-radius: var(--radius);
  padding: var(--space-3);
  font-size: 0.9375rem;
  max-inline-size: var(--measure);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}