/* Mezcal protocol documentation: crafted earthenware.
   Hand-thrown warmth, exact numbers. No build step, no external assets. */

:root {
  color-scheme: light dark;

  --bg: #f6efe4;
  --bg-grain: #efe5d5;
  --surface: #fbf6ee;
  --surface-2: #f1e7d8;
  --ink: #2a1d16;
  --ink-soft: #5c483c;
  --line: #d8c5ad;
  --line-strong: #c0a88a;
  --clay: #a8442a;
  --clay-deep: #8c3620;
  --agave: #46683f;
  --agave-deep: #35502f;
  --on-clay: #fff8f0;
  --focus: #1f5f8b;

  --radius-s: 6px;
  --radius-m: 12px;
  --radius-l: 22px 8px 20px 10px;

  --font: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia,
    "Times New Roman", serif;
  --font-ui: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "SFMono-Regular", Menlo, Consolas,
    "Liberation Mono", monospace;

  --measure: 68ch;
  --shell: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17120f;
    --bg-grain: #1c1613;
    --surface: #1f1915;
    --surface-2: #2a221c;
    --ink: #f2e7d8;
    --ink-soft: #c4b3a1;
    --line: #3d332b;
    --line-strong: #57493d;
    --clay: #e2825c;
    --clay-deep: #f0a183;
    --agave: #8fbf7e;
    --agave-deep: #a9d199;
    --on-clay: #1a120e;
    --focus: #8ec8f0;
  }
}

html[data-theme="light"] {
  --bg: #f6efe4;
  --bg-grain: #efe5d5;
  --surface: #fbf6ee;
  --surface-2: #f1e7d8;
  --ink: #2a1d16;
  --ink-soft: #5c483c;
  --line: #d8c5ad;
  --line-strong: #c0a88a;
  --clay: #a8442a;
  --clay-deep: #8c3620;
  --agave: #46683f;
  --agave-deep: #35502f;
  --on-clay: #fff8f0;
  --focus: #1f5f8b;
}

html[data-theme="dark"] {
  --bg: #17120f;
  --bg-grain: #1c1613;
  --surface: #1f1915;
  --surface-2: #2a221c;
  --ink: #f2e7d8;
  --ink-soft: #c4b3a1;
  --line: #3d332b;
  --line-strong: #57493d;
  --clay: #e2825c;
  --clay-deep: #f0a183;
  --agave: #8fbf7e;
  --agave-deep: #a9d199;
  --on-clay: #1a120e;
  --focus: #8ec8f0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}

body {
  margin: 0;
  background-color: var(--bg);
  background-image: radial-gradient(
      circle at 12% 8%,
      var(--bg-grain) 0,
      transparent 42%
    ),
    radial-gradient(circle at 88% 4%, var(--bg-grain) 0, transparent 38%);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.62;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 20px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--clay);
  color: var(--on-clay);
  padding: 10px 16px;
  z-index: 50;
  border-radius: 0 0 var(--radius-m) 0;
}
.skip:focus {
  left: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

a {
  color: var(--clay);
  text-underline-offset: 3px;
}
a:hover {
  color: var(--clay-deep);
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 3px;
}

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

.masthead {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
}

.masthead-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  align-items: center;
  padding-top: 12px;
  padding-bottom: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.02em;
}
.brand svg {
  width: 30px;
  height: 30px;
  flex: none;
}
.brand span {
  font-family: var(--font-ui);
  font-size: 1.05rem;
}
.brand small {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 4px;
  margin-left: auto;
  font-family: var(--font-ui);
  font-size: 0.9rem;
}
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: var(--radius-s);
}
.site-nav a:hover {
  color: var(--ink);
  background: var(--surface-2);
}
.site-nav a[aria-current="page"] {
  color: var(--clay);
  box-shadow: inset 0 -2px 0 var(--clay);
}

.tools {
  display: flex;
  gap: 8px;
  align-items: center;
}

.search-wrap {
  position: relative;
}

input[type="search"],
input[type="text"],
input[type="number"],
select,
textarea {
  font-family: var(--font-ui);
  font-size: 0.92rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  padding: 8px 12px;
  width: 100%;
}
textarea {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.5;
  min-height: 130px;
  resize: vertical;
}

#site-search {
  width: 190px;
  max-width: 46vw;
}

.theme-toggle {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 7px 13px;
  cursor: pointer;
  white-space: nowrap;
}
.theme-toggle:hover {
  background: var(--surface-2);
}

.search-results {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: min(460px, 88vw);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  box-shadow: 0 18px 40px rgba(42, 29, 22, 0.18);
  padding: 6px;
  z-index: 40;
  max-height: 68vh;
  overflow-y: auto;
}
.search-results[hidden] {
  display: none;
}
.search-results a {
  display: block;
  padding: 9px 11px;
  border-radius: var(--radius-s);
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-ui);
}
.search-results a:hover,
.search-results a:focus {
  background: var(--surface-2);
}
.search-results strong {
  display: block;
  font-size: 0.94rem;
  color: var(--clay);
}
.search-results span {
  display: block;
  font-size: 0.82rem;
  color: var(--ink-soft);
}
.search-results p {
  margin: 0;
  padding: 12px;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--ink-soft);
}

/* ---------- structure ---------- */

main {
  display: block;
  padding-bottom: 40px;
}

section {
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}
section:last-of-type {
  border-bottom: 0;
}

h1,
h2,
h3,
h4 {
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}
h1 {
  font-size: clamp(2rem, 5.2vw, 3.05rem);
}
h2 {
  font-size: clamp(1.45rem, 3.2vw, 1.95rem);
}
h3 {
  font-size: 1.16rem;
}
h4 {
  font-size: 1rem;
  font-family: var(--font-ui);
}

p,
li {
  max-width: var(--measure);
}

.lede {
  font-size: 1.16rem;
  color: var(--ink-soft);
}

.eyebrow {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--agave);
  margin-bottom: 10px;
}

.hero {
  padding: 46px 0 34px;
}
.hero h1 {
  max-width: 16ch;
}
.hero .lede {
  max-width: 58ch;
}

.hero-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  align-items: center;
}
@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.button {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.94rem;
  font-weight: 600;
  text-decoration: none;
  padding: 11px 19px;
  border-radius: 18px 7px 16px 8px;
  background: var(--clay);
  color: var(--on-clay);
  border: 1px solid var(--clay);
  cursor: pointer;
}
.button:hover {
  background: var(--clay-deep);
  border-color: var(--clay-deep);
  color: var(--on-clay);
}
.button.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.button.ghost:hover {
  background: var(--surface-2);
  color: var(--ink);
}

.facts {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(auto-fit, minmax(168px, 1fr));
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  margin: 22px 0;
}
.facts div {
  background: var(--surface);
  padding: 14px 16px;
}
.facts dt,
.facts .k {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 4px;
}
.facts dd,
.facts .v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.cards {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
  margin-top: 22px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 20px 22px;
}
.card h3 {
  margin-top: 0;
}
.card p:last-child,
.card ul:last-child {
  margin-bottom: 0;
}
.card .eyebrow {
  color: var(--clay);
}

.cards.vectors {
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
}
.card pre {
  background: var(--surface-2);
}
.hexline {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--ink-soft);
}
.hexline code {
  font-size: 0.75rem;
  line-height: 1.5;
  background: none;
  padding: 0;
  color: var(--ink);
}

.note,
.warn {
  border-left: 4px solid var(--agave);
  background: var(--surface);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
  padding: 14px 18px;
  margin: 20px 0;
}
.warn {
  border-left-color: var(--clay);
}
.note p:last-child,
.warn p:last-child {
  margin-bottom: 0;
}
.note p:first-child,
.warn p:first-child {
  margin-top: 0;
}

hr,
.rule {
  border: 0;
  height: 2px;
  background: var(--line-strong);
  border-radius: 999px;
  margin: 30px 0;
  opacity: 0.7;
}

/* ---------- code and tables ---------- */

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface-2);
  border-radius: 4px;
  padding: 1px 5px;
  overflow-wrap: anywhere;
}

pre {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 15px 17px;
  overflow-x: auto;
  font-size: 0.86rem;
  line-height: 1.55;
  max-width: 100%;
}
pre code {
  background: none;
  padding: 0;
  font-size: 1em;
  overflow-wrap: normal;
  white-space: pre;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  margin: 20px 0;
  background: var(--surface);
}

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 520px;
  font-family: var(--font-ui);
  font-size: 0.9rem;
}
caption {
  text-align: left;
  padding: 12px 14px 0;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--ink-soft);
}
th,
td {
  text-align: left;
  vertical-align: top;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
}
th {
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: var(--surface-2);
}
tbody tr:last-child td {
  border-bottom: 0;
}
td code {
  white-space: nowrap;
}

.yes {
  color: var(--agave-deep);
  font-weight: 700;
}
.no {
  color: var(--clay-deep);
  font-weight: 700;
}

/* ---------- rules ---------- */

.rules {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  counter-reset: none;
}
.rules > li {
  max-width: none;
  border-top: 1px solid var(--line);
  padding: 16px 0;
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 16px;
}
.rules > li:last-child {
  border-bottom: 1px solid var(--line);
}
.rule-id {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--clay);
  font-weight: 700;
  padding-top: 2px;
}
.rule-body > :first-child {
  margin-top: 0;
}
.rule-body > :last-child {
  margin-bottom: 0;
}
@media (max-width: 620px) {
  .rules > li {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

.toc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 16px 20px;
  margin: 22px 0;
}
.toc h2 {
  font-size: 0.78rem;
  font-family: var(--font-ui);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
  columns: 2;
  column-gap: 28px;
  font-family: var(--font-ui);
  font-size: 0.92rem;
}
.toc li {
  break-inside: avoid;
  padding: 3px 0;
  max-width: none;
}
@media (max-width: 620px) {
  .toc ul {
    columns: 1;
  }
}

/* ---------- diagrams ---------- */

figure {
  margin: 26px 0;
}
figure svg {
  width: 100%;
  height: auto;
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 10px;
}
figcaption {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-top: 10px;
  max-width: var(--measure);
}
.dia-stroke {
  stroke: var(--ink);
  fill: none;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.dia-clay {
  stroke: var(--clay);
  fill: none;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.dia-agave {
  stroke: var(--agave);
  fill: none;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.dia-hatch {
  stroke: var(--line-strong);
  stroke-width: 1.1;
}
.dia-fill {
  fill: var(--surface-2);
  stroke: var(--ink);
  stroke-width: 1.5;
}
.dia-t {
  fill: var(--ink);
  font-family: var(--font-ui);
  font-size: 12px;
}
.dia-t.small {
  font-size: 10.5px;
  fill: var(--ink-soft);
}
.dia-t.mono {
  font-family: var(--font-mono);
  font-size: 11px;
}
.dia-t.head {
  font-size: 12.5px;
  font-weight: 700;
}

/* ---------- tool ---------- */

.tool {
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
}
@media (max-width: 900px) {
  .tool {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 20px 22px;
}
.panel h2,
.panel h3 {
  margin-top: 0;
}

.field {
  margin-bottom: 14px;
}
.field label {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.83rem;
  font-weight: 600;
  margin-bottom: 5px;
}
.field .hint {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-top: 4px;
}
.field-row {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.mode-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.mode-switch button {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  padding: 8px 15px;
  border-radius: 14px 6px 12px 7px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
}
.mode-switch button[aria-pressed="true"] {
  background: var(--clay);
  border-color: var(--clay);
  color: var(--on-clay);
  font-weight: 700;
}

.checks {
  list-style: none;
  padding: 0;
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.88rem;
}
.checks li {
  max-width: none;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}
.checks li:last-child {
  border-bottom: 0;
}
.checks .mark {
  font-weight: 700;
  text-align: center;
}
.checks .ok .mark {
  color: var(--agave-deep);
}
.checks .bad .mark {
  color: var(--clay-deep);
}
.checks .warn .mark {
  color: var(--clay);
}
.checks .info .mark {
  color: var(--ink-soft);
}
.checks b {
  display: block;
}
.checks span {
  color: var(--ink-soft);
  overflow-wrap: anywhere;
}

.verdict {
  font-family: var(--font-ui);
  font-weight: 700;
  border-radius: var(--radius-m);
  padding: 12px 16px;
  margin-bottom: 16px;
  border: 1px solid var(--line-strong);
  background: var(--surface-2);
}
.verdict.ok {
  border-color: var(--agave);
  color: var(--agave-deep);
}
.verdict.bad {
  border-color: var(--clay);
  color: var(--clay-deep);
}
.verdict.warn {
  border-color: var(--clay);
  color: var(--ink);
}

.out {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  background: var(--surface-2);
  border-radius: var(--radius-m);
  padding: 12px 14px;
  border: 1px solid var(--line);
}

.noscript-note {
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-m);
  padding: 14px 18px;
  background: var(--surface-2);
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 2px solid var(--line-strong);
  background: var(--surface);
  padding: 28px 0 40px;
  font-family: var(--font-ui);
  font-size: 0.87rem;
  color: var(--ink-soft);
}
.footer-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}
.site-footer h2 {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 8px;
}
.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-footer li {
  padding: 2px 0;
  max-width: none;
}
.site-footer dl {
  margin: 0;
}
.site-footer dt {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.85;
}
.site-footer dd {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--ink);
  overflow-wrap: anywhere;
}
.colophon {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  max-width: var(--measure);
}

@media (max-width: 700px) {
  body {
    font-size: 16px;
  }
  .site-nav {
    width: 100%;
    margin-left: 0;
    order: 3;
  }
  .tools {
    margin-left: auto;
  }
}