/* Antiphon validator — ink on ledger paper; rubric red is reserved for the response. */

:root {
  --paper: #FBFBF8;
  --wash: #F2F2EC;
  --ink: #20242B;
  --quill: #5B626E;
  --rubric: #A81E29;
  --verdigris: #216E52;
  --ochre: #8A5B00;
  --line: #E4E4DE;
  --serif: "Charter", "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
  max-width: 60rem;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.55;
}

/* ---- masthead ---- */
.masthead {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}
.wordmark {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.42em;
  font-weight: 600;
}
.masthead-note {
  font-style: italic;
  color: var(--quill);
  font-size: 0.9rem;
}

/* ---- hero ---- */
.hero { padding: 2.75rem 0 1.5rem; }
h1 {
  font-size: clamp(2.1rem, 5.5vw, 3.1rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.08;
  margin: 0 0 0.75rem;
}
.lede {
  max-width: 42rem;
  margin: 0;
  color: var(--quill);
}
.lede strong { color: var(--ink); font-weight: 600; }
.lede em { color: var(--ink); }

/* ---- the two voices ---- */
.voice {
  display: grid;
  grid-template-columns: 3.25rem 1fr;
  gap: 0 0.75rem;
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2rem;
  margin-top: 1rem;
}
.voice-mark {
  font-size: 1.9rem;
  line-height: 1;
  color: var(--quill);
  text-align: center;
  padding-top: 0.1rem;
  user-select: none;
}
.voice.response .voice-mark { color: var(--rubric); }
.voice-title {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--quill);
  margin: 0 0 0.9rem;
}

/* ---- input ---- */
#xml-input {
  width: 100%;
  min-height: 14rem;
  resize: vertical;
  padding: 0.9rem 1rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--ink);
  background: var(--wash);
  border: 1px solid var(--line);
  border-radius: 3px;
}
#xml-input:focus-visible { outline: 2px solid var(--ink); outline-offset: 1px; }
#xml-input.dragover { outline: 2px dashed var(--quill); outline-offset: 1px; }

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem;
  margin-top: 0.9rem;
}
.file-label { position: relative; overflow: hidden; }
.file-label input { position: absolute; inset: 0; opacity: 0; width: 100%; cursor: pointer; }
.file-label span,
.format-label select {
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 0.45rem 0.8rem;
  background: var(--paper);
  border: 1px solid var(--quill);
  border-radius: 3px;
  color: var(--ink);
  cursor: pointer;
}
.file-label:focus-within span { outline: 2px solid var(--ink); outline-offset: 1px; }
.format-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--quill);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
#validate-btn {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.55rem 1.6rem;
  color: var(--paper);
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 3px;
  cursor: pointer;
}
#validate-btn:hover { background: #000; }
#validate-btn:focus-visible { outline: 2px solid var(--rubric); outline-offset: 2px; }
#validate-btn:disabled { opacity: 0.45; cursor: wait; }

.quiet {
  color: var(--quill);
  font-size: 0.85rem;
  margin: 0.8rem 0 0;
}

/* ---- report ---- */
.verdict {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.8rem 1rem;
  border-radius: 3px;
  margin: 0 0 0.4rem;
}
.verdict.pass { color: var(--verdigris); background: #EDF4EF; border: 1px solid #C9DECf; }
.verdict.fail { color: var(--rubric); background: #F9EEEE; border: 1px solid #EAD2D2; }
.verdict.info { color: var(--ink); background: var(--wash); border: 1px solid var(--line); }

.report-meta {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--quill);
  margin: 0 0 1.4rem;
  line-height: 1.8;
}
.report-meta a { color: var(--quill); }

.viol-group-title {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  margin: 1.6rem 0 0.2rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
}
.viol-group-title.fatal { color: var(--rubric); }
.viol-group-title.warning { color: var(--ochre); }

.viol {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}
.viol-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.8rem;
}
.viol-id { font-weight: 700; }
.viol.fatal .viol-id { color: var(--rubric); }
.viol.warning .viol-id { color: var(--ochre); }
.viol-where { color: var(--quill); }
.viol-msg { margin: 0.35rem 0 0; max-width: 46rem; }
.viol-loc {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--quill);
  margin: 0.35rem 0 0;
  word-break: break-all;
}

.viol-explain {
  margin: 0.45rem 0 0;
  max-width: 46rem;
}
.viol-msg-official {
  font-size: 0.9rem;
  color: var(--quill);
}

/* ---- waitlist ---- */
.waitlist {
  margin-top: 2.2rem;
  padding: 1.1rem 1.2rem 1.3rem;
  background: var(--wash);
  border: 1px solid var(--line);
  border-left: 3px solid var(--rubric);
  border-radius: 3px;
}
.waitlist .viol-group-title { margin-top: 0; border-bottom: 0; color: var(--ink); }
#waitlist-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.8rem;
}
#waitlist-form input[type="email"],
#waitlist-form input[type="text"]:not(#wl-website) {
  flex: 1 1 14rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  padding: 0.5rem 0.7rem;
  border: 1px solid var(--quill);
  border-radius: 3px;
  background: var(--paper);
  color: var(--ink);
}
#waitlist-form input:focus-visible { outline: 2px solid var(--ink); outline-offset: 1px; }
#wl-website { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
#waitlist-form button {
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.5rem 1.2rem;
  color: var(--paper);
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 3px;
  cursor: pointer;
}
#waitlist-form button:hover { background: #000; }
#waitlist-form button:focus-visible { outline: 2px solid var(--rubric); outline-offset: 2px; }
.waitlist-thanks {
  margin-top: 2.2rem;
  padding: 0.9rem 1.2rem;
  background: #EDF4EF;
  border: 1px solid #C9DECF;
  border-radius: 3px;
  color: var(--verdigris);
  font-weight: 600;
}

.parse-error pre {
  font-family: var(--mono);
  font-size: 0.78rem;
  background: var(--wash);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.8rem 1rem;
  overflow-x: auto;
}

/* ---- footer ---- */
footer {
  border-top: 1px solid var(--line);
  margin-top: 3rem;
  padding-top: 1.5rem;
  font-size: 0.9rem;
}
footer details { margin-bottom: 0.9rem; }
footer summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
}
footer summary:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
footer ul { margin: 0.5rem 0 0; padding-left: 1.2rem; }
footer li { margin-bottom: 0.3rem; }
footer p { max-width: 46rem; }
.versions {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--quill);
  line-height: 1.9;
  margin: 1.4rem 0;
}
.colophon { margin-top: 1.5rem; }

/* ---- motion ---- */
@media (prefers-reduced-motion: no-preference) {
  .voice.response:not([hidden]) { animation: respond 0.45s ease-out; }
  @keyframes respond {
    from { opacity: 0; transform: translateY(0.5rem); }
    to { opacity: 1; transform: none; }
  }
}

/* ---- small screens ---- */
@media (max-width: 40rem) {
  .voice { grid-template-columns: 2rem 1fr; }
  #validate-btn { margin-left: 0; width: 100%; }
}