/* Evidence sheet.
   The page is a laboratory record, not a dashboard: paper ground, ink type, one stamped colour
   per evidence class. Part numbers are the content, so they are set in mono at the largest size
   on the page and everything else steps back. */

@font-face {
  font-family: "Archivo";
  src: url("/static/fonts/archivo-v25-latin-regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Archivo";
  src: url("/static/fonts/archivo-v25-latin-600.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: "Archivo";
  src: url("/static/fonts/archivo-v25-latin-700.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/static/fonts/ibm-plex-mono-v20-latin-regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/static/fonts/ibm-plex-mono-v20-latin-600.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

:root {
  --paper: #e4e5e1;
  --paper-raised: #eeefeb;
  --ink: #16181a;
  --ink-soft: #4d524f;
  --rule: #c2c6c0;
  --stamp-confirmed: #1f5c3a;
  --stamp-open: #8a6a12;
  --stamp-weak: #7d817b;
  --stamp-alarm: #a33a2a;

  --ui: "Archivo", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --gap: 1.4rem;
  --measure: 80ch;
}

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

body {
  margin: 0;
  padding: clamp(1.5rem, 4vw, 3.5rem) clamp(1rem, 4vw, 2.5rem) 5rem;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ui);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.06rem);
  line-height: 1.55;
  text-wrap: pretty;
  -webkit-text-size-adjust: 100%;
}

.sheet {
  max-width: var(--measure);
  margin: 0 auto;
}

/* --- masthead ------------------------------------------------------------------- */

.masthead {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 1rem;
  margin-bottom: 2.2rem;
}

.masthead__eyebrow {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.5rem;
}

h1 {
  font-size: clamp(1.9rem, 1.4rem + 2.2vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.04;
  margin: 0 0 0.6rem;
  text-wrap: balance;
}

.masthead__lede {
  margin: 0;
  max-width: 58ch;
  color: var(--ink-soft);
}

/* --- form ----------------------------------------------------------------------- */

form {
  margin-bottom: 2.6rem;
}

.field {
  margin-bottom: var(--gap);
}

label {
  display: block;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.4rem;
}

.hint {
  font-size: 0.86rem;
  color: var(--ink-soft);
  margin: 0.4rem 0 0;
}

input[type="text"] {
  width: 100%;
  min-height: 3rem;
  padding: 0.6rem 0.8rem;
  font-family: var(--mono);
  font-size: 1.05rem;
  color: var(--ink);
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: 0;
}

input[type="text"]:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.switch {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-height: 44px;
  font-family: var(--ui);
  font-size: 0.95rem;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink);
}

.switch input {
  width: 1.15rem;
  height: 1.15rem;
  accent-color: var(--stamp-confirmed);
}

button {
  min-height: 3rem;
  padding: 0 1.6rem;
  font-family: var(--ui);
  font-size: 1rem;
  font-weight: 600;
  color: var(--paper-raised);
  background: var(--ink);
  border: none;
  border-radius: 0;
  cursor: pointer;
}

button[disabled] {
  background: var(--stamp-weak);
  cursor: progress;
}

/* --- status line ---------------------------------------------------------------- */

.status {
  font-family: var(--mono);
  font-size: 0.86rem;
  color: var(--ink-soft);
  margin: 1.4rem 0 0;
  min-height: 1.4em;
}

/* --- results -------------------------------------------------------------------- */

.verdict {
  border-top: 2px solid var(--ink);
  padding-top: 1rem;
  margin: 2.6rem 0 1.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.verdict strong {
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.relation {
  display: grid;
  grid-template-columns: 4.2rem 1fr;
  border: 1px solid var(--rule);
  background: var(--paper-raised);
  margin-bottom: 1.1rem;
}

/* The signature: a stamped shelf label carrying the evidence class, read from the side. */
.relation__stamp {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 0;
  background: var(--stamp-weak);
  color: var(--paper-raised);
}

.relation__stamp span {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--mono);
  font-weight: 600;
  font-size: 1.5rem;
  letter-spacing: 0.08em;
}

.relation--confirmed .relation__stamp {
  background: var(--stamp-confirmed);
}
.relation--open .relation__stamp {
  background: var(--stamp-open);
}
.relation--conflict .relation__stamp {
  background: var(--stamp-alarm);
}

.relation__body {
  padding: 1.1rem 1.2rem 1rem;
  min-width: 0;
}

.relation__type {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.35rem;
}

.relation__pn {
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(1.3rem, 1.1rem + 1vw, 1.75rem);
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
  overflow-wrap: anywhere;
}

.relation__state {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}

details {
  margin-top: 0.9rem;
  border-top: 1px solid var(--rule);
  padding-top: 0.7rem;
}

summary {
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.evidence {
  list-style: none;
  margin: 0.8rem 0 0;
  padding: 0;
}

.evidence li {
  display: grid;
  grid-template-columns: 3.4rem 1fr;
  gap: 0 0.8rem;
  padding: 0.5rem 0;
  border-top: 1px solid var(--rule);
  font-size: 0.88rem;
}

.evidence li:first-child {
  border-top: none;
}

.evidence__id {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--ink-soft);
}

.evidence__chain {
  font-family: var(--mono);
  font-size: 0.86rem;
  overflow-wrap: anywhere;
}

.evidence__source {
  grid-column: 2;
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.empty {
  border: 1px dashed var(--rule);
  padding: 1.4rem 1.3rem;
  background: var(--paper-raised);
}

.empty h2 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
}

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

.notice {
  border-left: 3px solid var(--stamp-alarm);
  padding: 0.7rem 0 0.7rem 1rem;
  margin: 1.6rem 0 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

footer {
  margin-top: 3.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.fade-in {
  animation: rise 0.35s ease-out both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    animation: none;
  }
}

@media (max-width: 34rem) {
  .relation {
    grid-template-columns: 3.2rem 1fr;
  }
  .relation__stamp span {
    font-size: 1.2rem;
  }
  .evidence li {
    grid-template-columns: 1fr;
  }
  .evidence__source {
    grid-column: 1;
  }
}