@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=DM+Sans:wght@300;400;500&display=swap');

/* ── Design tokens ─────────────────────────────────────────── */
:root {
  --bg: #0e0f11;
  --bg2: #141518;
  --bg3: #1a1c20;
  --border: rgba(255,255,255,0.07);
  --border2: rgba(255,255,255,0.12);
  --text: #e2e4e9;
  --text2: #8b8f9a;
  --text3: #555a66;
  --heading: #ffffff;
  --accent: #5b8af5;
  --accent2: #3d6be0;
  --green: #3ecf8e;
  --amber: #f0a429;
  --red: #e55353;
  --purple: #9b72f5;
  --teal: #2dd4bf;
  --mono: 'JetBrains Mono', monospace;
  --sans: 'DM Sans', sans-serif;
  --theme-icon: '☀';
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f5f2;
    --bg2: #ffffff;
    --bg3: #eceae5;
    --border: rgba(0,0,0,0.07);
    --border2: rgba(0,0,0,0.12);
    --text: #1a1c20;
    --text2: #555a66;
    --text3: #9b9fa9;
    --heading: #0a0b0d;
    --accent: #3d6be0;
    --accent2: #2554c7;
    --green: #1a9e68;
    --amber: #b87d0d;
    --red: #c93a3a;
    --purple: #7c52d9;
    --teal: #0f9e8a;
    --theme-icon: '☽';
  }
}

/* ── Reset ──────────────────────────────────────────────────── */
* { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Layout ─────────────────────────────────────────────────── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.7;
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 32px 80px;
}

/* ── Header ─────────────────────────────────────────────────── */
.header {
  border-bottom: 1px solid var(--border2);
  padding-bottom: 32px;
  margin-bottom: 48px;
}
.header-eyebrow a { color: inherit; text-decoration: none; opacity: 0.8; transition: opacity .15s; }
.header-eyebrow a:hover { opacity: 1; }
.header-eyebrow svg { vertical-align: middle; position: relative; top: -1px; }
.header-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
h1 {
  font-size: 32px;
  font-weight: 300;
  color: var(--heading);
  letter-spacing: -.02em;
  line-height: 1.2;
  margin-bottom: 10px;
}
h1 span { color: var(--accent); font-weight: 500; }
.header-sub {
  color: var(--text2);
  font-size: 14px;
  max-width: 520px;
}

/* ── Section headings ───────────────────────────────────────── */
.section-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 48px 0 20px;
}
.section-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  background: rgba(91,138,245,0.1);
  border: 1px solid rgba(91,138,245,0.2);
  padding: 2px 8px;
  border-radius: 4px;
}
h2 {
  font-size: 18px;
  font-weight: 500;
  color: var(--heading);
  letter-spacing: -.01em;
}
h3 {
  font-size: 13px;
  font-weight: 500;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin: 28px 0 10px;
}

/* ── Callout boxes ──────────────────────────────────────────── */
.callout {
  border-radius: 8px;
  padding: 14px 16px;
  margin: 16px 0;
  font-size: 13px;
  line-height: 1.6;
  border-left: 3px solid;
}
.callout.info   { background: rgba(91,138,245,0.07); border-color: var(--accent); color: var(--text); }
.callout.warn   { background: rgba(240,164,41,0.07);  border-color: var(--amber);  color: var(--text); }
.callout.good   { background: rgba(62,207,142,0.07);  border-color: var(--green);  color: var(--text); }
.callout.danger { background: rgba(229,83,83,0.07);   border-color: var(--red);    color: var(--text); }
.callout strong { font-weight: 500; }

/* ── Code blocks ────────────────────────────────────────────── */
.code-block {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 8px;
  margin: 12px 0;
  overflow: hidden;
}
.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.code-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: .06em;
}
.copy-btn {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text3);
  background: none;
  border: 1px solid var(--border2);
  border-radius: 4px;
  padding: 2px 8px;
  cursor: pointer;
  transition: all .15s;
}
.copy-btn:hover  { color: var(--accent); border-color: var(--accent); }
.copy-btn.copied { color: var(--green);  border-color: var(--green); }
pre {
  padding: 14px 16px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--text);
}

/* Syntax token colours */
.cm { color: var(--text3); }   /* comment */
.ck { color: var(--purple); }  /* keyword */
.cv { color: var(--teal); }    /* value   */
.cs { color: var(--green); }   /* string  */
.cw { color: var(--amber); }   /* warning */

/* ── Step list ──────────────────────────────────────────────── */
.steps { display: flex; flex-direction: column; gap: 2px; margin: 12px 0; }
.step {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  align-items: start;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.step:last-child { border-bottom: none; }
.step-n {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  padding-top: 2px;
  font-weight: 700;
}
.step-body { font-size: 13.5px; color: var(--text); }
.step-check {
  appearance: none;
  width: 14px;
  height: 14px;
  min-width: 14px;
  border: 1.5px solid var(--border2);
  border-radius: 3px;
  cursor: pointer;
  margin-top: 5px;
  transition: background .15s, border-color .15s;
  background: var(--bg2);
  margin-left: 9px;
}
.step-check:hover { border-color: var(--accent); }
.step-check:checked {
  background-color: var(--accent);
  border-color: var(--accent);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 10 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 4l3 3 5-6' stroke='%23fff' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 10px 8px;
}
.step-body code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--bg3);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--teal);
}
.step-body .note {
  display: block;
  font-size: 12px;
  color: var(--text2);
  margin-top: 3px;
}

/* ── Container grid ─────────────────────────────────────────── */
.container-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 16px 0;
}
.container-card {
  border-radius: 10px;
  border: 1px solid var(--border2);
  padding: 16px;
  background: var(--bg2);
  position: relative;
  overflow: hidden;
}
.container-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
}
.c-blue::before   { background: #5b8af5; }
.c-red::before    { background: #e55353; }
.c-green::before  { background: #3ecf8e; }
.c-amber::before  { background: #f0a429; }
.c-purple::before { background: #9b72f5; }
.c-teal::before   { background: #2dd4bf; }
.c-gray::before   { background: #555a66; }
.c-pink::before   { background: #e06bab; }

.container-name {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 4px;
}

/* Light-mode container name colours */
.c-blue .container-name   { color: #3d6be0; }
.c-red .container-name    { color: #c93a3a; }
.c-green .container-name  { color: #1a9e68; }
.c-amber .container-name  { color: #b87d0d; }
.c-purple .container-name { color: #7c52d9; }
.c-teal .container-name   { color: #0f9e8a; }
.c-gray .container-name   { color: var(--text2); }
.c-pink .container-name   { color: #b84e8a; }

/* Dark-mode overrides */
@media (prefers-color-scheme: dark) {
  .c-blue .container-name   { color: #5b8af5; }
  .c-red .container-name    { color: #e55353; }
  .c-green .container-name  { color: #3ecf8e; }
  .c-amber .container-name  { color: #f0a429; }
  .c-purple .container-name { color: #9b72f5; }
  .c-teal .container-name   { color: #2dd4bf; }
  .c-gray .container-name   { color: #8b8f9a; }
  .c-pink .container-name   { color: #e06bab; }
}

.container-desc {
  font-size: 12px;
  color: var(--text2);
  margin-bottom: 10px;
  line-height: 1.5;
}
.container-sites {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.site-tag {
  font-family: var(--mono);
  font-size: 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 2px 7px;
  color: var(--text2);
}
.container-rule {
  margin-top: 10px;
  font-size: 11px;
  color: var(--text3);
  border-top: 1px solid var(--border);
  padding-top: 8px;
  font-family: var(--mono);
}

/* ── Table ──────────────────────────────────────────────────── */
.ub-table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 13px; }
.ub-table th {
  text-align: left;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  padding: 6px 12px;
  border-bottom: 1px solid var(--border2);
  font-weight: 400;
  letter-spacing: .05em;
}
.ub-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: top;
}
.ub-table tr:last-child td { border-bottom: none; }
.ub-table code {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--teal);
  background: rgba(45,212,191,0.08);
  padding: 1px 6px;
  border-radius: 3px;
}

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 3px;
  font-weight: 500;
}
.badge-must { background: rgba(62,207,142,0.12);  color: var(--green); }
.badge-rec  { background: rgba(91,138,245,0.12);  color: var(--accent); }
.badge-skip { background: rgba(229,83,83,0.12);   color: var(--red); }

/* ── Divider ────────────────────────────────────────────────── */
hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }

/* ── TOC ────────────────────────────────────────────────────── */
.toc {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 40px;
}
.toc-title {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.toc-list { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.toc-list a {
  color: var(--text2);
  text-decoration: none;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color .15s;
}
.toc-list a:hover { color: var(--accent); }
.toc-list a::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border2);
  flex-shrink: 0;
}

/* ── Inline code ────────────────────────────────────────────── */
p code, li code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--bg3);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--teal);
}

/* ── Body copy ──────────────────────────────────────────────── */
p  { margin: 10px 0; color: var(--text); font-size: 13.5px; }
ul { padding-left: 18px; margin: 8px 0; }
li { margin: 4px 0; font-size: 13.5px; color: var(--text); }

/* ── Social links ───────────────────────────────────────────── */
.social-links {
  display: flex;
  gap: 18px;
  margin-top: 16px;
}
.social-links a {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  text-decoration: none;
  transition: color .15s;
}
.social-links a:hover { color: var(--accent); }
.social-links svg { flex-shrink: 0; }

/* ── Footer ─────────────────────────────────────────────────── */
.footer-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text3);
  max-width: 50%;
  text-align: right;
}
.footer-date { white-space: nowrap; }
.footer a { color: inherit; text-decoration: none; transition: color .15s; }
.footer a:hover { color: var(--accent); }
.footer-brand { display: inline-flex; align-items: center; gap: 5px; }
.footer-brand svg { flex-shrink: 0; position: relative; }
.footer-social { display: flex; gap: 8px; align-items: center; }
.footer-social a { color: var(--text3); text-decoration: none; transition: color .15s; line-height: 0; }
.footer-social a:hover { color: var(--accent); }

.footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  text-transform: lowercase;
  gap: 16px;
}

@media (max-width: 540px) {
  .footer { flex-direction: column; gap: 12px; }
  .footer-tags { justify-content: flex-start; max-width: 100%; text-align: left; }
}