/* ====================================================================
   SPEC PAGE
   ==================================================================== */

.spec-wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.spec-content {
  padding-top: clamp(2.5rem, 6vw, 4rem);
  padding-bottom: clamp(3rem, 6vw, 4rem);
}

.spec-content > .section-prompt {
  margin-bottom: 1.5rem;
}

.spec-content > h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  letter-spacing: -0.02em;
}

/* ---------- spec: table of contents ---------- */

.toc {
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1.25rem 1.5rem;
  margin: 2rem 0 3rem;
}

.toc > .section-prompt {
  margin-bottom: 1rem;
}

.toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.25rem 1.5rem;
}

@media (max-width: 640px) {
  .toc__list {
    grid-template-columns: 1fr;
  }
}

.toc__list li {
  margin: 0;
}

.toc__list a {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 0.5rem;
  padding: 0.375rem 0;
  color: var(--fg);
  border-bottom: none;
  align-items: baseline;
}

.toc__list a:hover,
.toc__list a:focus-visible {
  color: var(--accent);
}

.toc__list a:hover .toc__num,
.toc__list a:focus-visible .toc__num {
  color: var(--accent);
}

.toc__num {
  color: var(--fg-mute);
  font-weight: 700;
  font-feature-settings: "tnum";
  transition: color 0.15s ease;
}

.toc__title {
  color: inherit;
}

/* ---------- spec: article typography ---------- */

.spec-content article {
  font-size: 0.9375rem;
}

.spec-content article h2 {
  margin: 3rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule);
  font-size: clamp(1.25rem, 2.2vw, 1.5rem);
  letter-spacing: -0.01em;
  scroll-margin-top: 5rem;
}

.spec-content article h2:first-child {
  margin-top: 1rem;
}

.spec-content article h3 {
  margin: 2.25rem 0 0.75rem;
  font-size: 1.0625rem;
  color: var(--fg);
  scroll-margin-top: 5rem;
}

.spec-content article p {
  margin: 0 0 1rem;
  line-height: 1.7;
}

.spec-content article ol,
.spec-content article ul {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
}

.spec-content article li {
  margin: 0.25rem 0;
  line-height: 1.65;
}

.spec-content article ul {
  list-style: none;
  padding-left: 0;
}

.spec-content article ul > li {
  position: relative;
  padding-left: 1.25rem;
}

.spec-content article ul > li::before {
  content: "─";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.spec-content article ul ul {
  margin-top: 0.25rem;
}

.spec-content article ul ul > li::before {
  content: "·";
  color: var(--fg-mute);
  top: -0.05em;
}

.spec-content article ol {
  list-style: decimal;
  padding-left: 2rem;
}

.spec-content article ol li::marker {
  color: var(--fg-mute);
  font-weight: 700;
}

.spec-content article code {
  color: var(--accent);
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  padding: 0.05em 0.35em;
  border-radius: 3px;
  font-size: 0.9em;
}

.spec-content article pre.terminal {
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 0.875rem 1rem;
  margin: 1rem 0 1.5rem;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.6;
}

.spec-content article pre.terminal code {
  background: none;
  border: none;
  padding: 0;
  color: var(--fg);
  font-size: inherit;
}

.spec-content article strong {
  color: var(--fg);
  font-weight: 700;
}

.spec-content article em {
  color: var(--fg);
  font-style: italic;
}

.spec-content article hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 3rem 0;
}

.spec-content article blockquote {
  margin: 1rem 0;
  padding: 0.5rem 1rem;
  border-left: 3px solid var(--accent);
  color: var(--fg-dim);
}

.spec-content article a {
  color: var(--accent);
}

/* ---------- spec: heading anchor ---------- */

.spec-content article h2,
.spec-content article h3 {
  position: relative;
}

.h-anchor {
  margin-left: 0.5rem;
  color: var(--fg-mute);
  opacity: 0;
  text-decoration: none;
  font-weight: 400;
  border-bottom: none !important;
  transition: opacity 0.15s ease, color 0.15s ease;
  font-size: 0.9em;
}

.spec-content article h2:hover .h-anchor,
.spec-content article h3:hover .h-anchor,
.h-anchor:focus-visible {
  opacity: 1;
  color: var(--accent);
}

.h-anchor:hover {
  color: var(--accent) !important;
}

/* ---------- spec: tables ---------- */

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--bg-elev);
}

.spec-content article table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.spec-content article thead th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-weight: 700;
  color: var(--fg-dim);
  border-bottom: 1px solid var(--rule);
  background: transparent;
  white-space: nowrap;
}

.spec-content article tbody td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  line-height: 1.55;
}

.spec-content article tbody tr:last-child td {
  border-bottom: none;
}

.spec-content article tbody td:first-child {
  white-space: nowrap;
}

.spec-content article tbody td code,
.spec-content article tbody td strong {
  white-space: normal;
}

@media (max-width: 640px) {
  .spec-content article tbody td:first-child {
    white-space: normal;
  }
}

/* ---------- spec footer adjustment ---------- */

.footer.spec-wrap {
  border-top: 1px solid var(--rule);
  margin-top: 2rem;
}

/* ====================================================================
   PRINT STYLESHEET
   ==================================================================== */

@media print {
  :root {
    --bg: #ffffff;
    --bg-elev: #f5f5f0;
    --fg: #1a1a1a;
    --fg-dim: #4a4a4a;
    --fg-mute: #7a7a7a;
    --accent: #b8460e;
    --add: #1a7f37;
    --rule: #d8d8d4;
  }

  body {
    background: #ffffff;
    color: #1a1a1a;
    font-size: 10pt;
    line-height: 1.5;
  }

  .nav,
  .h-anchor,
  .toc {
    display: none !important;
  }

  .spec-wrap {
    max-width: none;
    padding: 0;
  }

  .spec-content {
    padding-top: 0;
  }

  .spec-content article h2 {
    page-break-after: avoid;
    margin-top: 1.5rem;
  }

  .spec-content article h3 {
    page-break-after: avoid;
  }

  .spec-content article p,
  .spec-content article li,
  .spec-content article tr {
    page-break-inside: avoid;
  }

  .spec-content article pre.terminal,
  .spec-content article code,
  .table-wrap {
    border-color: #c0c0c0;
    background: #f5f5f0;
  }

  .spec-content article a {
    color: #1a1a1a;
    text-decoration: underline;
  }

  .footer {
    border-top: 1px solid #c0c0c0;
    color: #4a4a4a;
  }

  @page {
    margin: 2cm;
  }
}