/* ==========================================================================
   WEKA-MCP — site styles
   Palette drawn from WEKA's own world: JVM-console ink, the bone grey of the
   old Java desktop, Waikato green, and the clay used only for a class label.
   ========================================================================== */

:root {
  --ink:        #0B0F0E;
  --ink-2:      #111716;
  --ink-3:      #171F1D;
  --line:       #26302E;
  --line-soft:  #1D2624;

  --paper:      #E8E4D9;
  --paper-2:    #BDBCB3;
  --muted:      #7D8A86;

  --green:      #4A8E7A;
  --green-lit:  #6FBFA4;
  --clay:       #C4573A;

  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --wrap: 1120px;
  --r: 3px;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper-2);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

a { color: var(--green-lit); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--paper); }

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

.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;
}

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--green); color: var(--ink); padding: 10px 16px;
  font: 600 13px/1 var(--sans); border-radius: var(--r); transition: top .15s;
}
.skip:focus { top: 12px; }

/* ── headings ─────────────────────────────────────────────────────────── */

h1, h2, h3, h4 { color: var(--paper); font-weight: 600; letter-spacing: -0.02em; margin: 0; }

h1 {
  font-size: clamp(2.25rem, 5.6vw, 3.9rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
  font-weight: 650;
}
/* The headline break is placed by hand so "workbench" ends line one. Below the
   two-column breakpoint the line is too short to hold it, so the <br> collapses
   and the text wraps on its own. */
@media (max-width: 900px) { h1 br { display: none; } }
h1 em { font-style: normal; color: var(--green-lit); }

h2 { font-size: clamp(1.65rem, 3.2vw, 2.35rem); line-height: 1.15; margin-bottom: 16px; }
h3.sub { font-size: 1.05rem; margin: 40px 0 14px; letter-spacing: 0; }
h4 { font-size: .95rem; margin-bottom: 8px; letter-spacing: 0; }

p { margin: 0 0 16px; }

.eyebrow {
  font: 500 12px/1 var(--mono);
  letter-spacing: .12em;
  color: var(--green);
  margin: 0 0 18px;
}
.eyebrow-a, .eyebrow-b { color: var(--clay); letter-spacing: .16em; text-transform: uppercase; }

.section-lede { max-width: 62ch; color: var(--paper-2); font-size: 1.06rem; margin-bottom: 36px; }
.lede { max-width: 54ch; font-size: 1.08rem; color: var(--paper-2); margin: 22px 0 30px; }
.lede strong, .section-lede strong { color: var(--paper); font-weight: 600; }

.fine { font-size: .9rem; color: var(--muted); max-width: 68ch; }
.fine code { font-size: .86em; }

code {
  font-family: var(--mono);
  font-size: .88em;
  color: var(--green-lit);
  background: var(--ink-3);
  padding: 1px 5px;
  border-radius: 2px;
}

/* ── topbar ───────────────────────────────────────────────────────────── */

.topbar {
  position: sticky; top: 0; z-index: 40;
  background: rgba(11, 15, 14, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.topbar-inner { display: flex; align-items: center; gap: 20px; height: 60px; }

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; flex: 0 0 auto; }
.brand-mark {
  display: grid; place-items: center;
  width: 26px; height: 26px;
  background: var(--green); color: var(--ink);
  font: 700 15px/1 var(--mono); border-radius: var(--r);
}
.brand-name { font: 600 15px/1 var(--mono); color: var(--paper); letter-spacing: -.01em; }
.brand-dim { color: var(--muted); }

.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a {
  font-size: .88rem; color: var(--paper-2); text-decoration: none;
  padding: 4px 0; border-bottom: 1px solid transparent;
}
.nav a:hover { color: var(--paper); border-bottom-color: var(--green); }

.status {
  display: flex; align-items: center; gap: 8px;
  font: 500 11.5px/1 var(--mono);
  color: var(--muted); text-decoration: none;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 12px; flex: 0 0 auto;
  white-space: nowrap;
}
.status:hover { border-color: var(--green); color: var(--paper-2); }
.status-dot {
  width: 7px; height: 7px; border-radius: 50%; flex: 0 0 auto;
  background: var(--green-lit);
  box-shadow: 0 0 0 3px rgba(111, 191, 164, .16);
}

/* ── hero ─────────────────────────────────────────────────────────────── */

.hero { padding: clamp(56px, 9vw, 104px) 0 clamp(48px, 7vw, 88px); border-bottom: 1px solid var(--line-soft); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(32px, 5vw, 64px); align-items: center; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 22px;
  font: 500 .94rem/1 var(--sans);
  color: var(--paper); text-decoration: none;
  border: 1px solid var(--line); border-radius: var(--r);
  background: transparent; transition: border-color .15s, background .15s, color .15s;
}
.btn:hover { border-color: var(--green); background: var(--ink-3); color: var(--paper); }
.btn-primary { background: var(--green); border-color: var(--green); color: var(--ink); font-weight: 600; }
.btn-primary:hover { background: var(--green-lit); border-color: var(--green-lit); color: var(--ink); }

.hero-foot { font: 400 .85rem/1.5 var(--mono); color: var(--muted); margin: 0; }

/* signature: the session panel */
.session {
  margin: 0;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 24px 60px -30px rgba(0,0,0,.9);
}
.session-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 11px 14px;
  background: var(--ink-3);
  border-bottom: 1px solid var(--line);
}
.session-bar .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--line); }
.session-title { margin-left: 8px; font: 400 11.5px/1 var(--mono); color: var(--muted); }

.session-body { padding: 18px; display: grid; gap: 12px; }

.session-block {
  margin: 0;
  font: 400 12.5px/1.75 var(--mono);
  color: var(--paper-2);
  white-space: pre;
  overflow-x: auto;
  padding-bottom: 2px;
}
.session-tree { border-top: 1px solid var(--line-soft); padding-top: 14px; margin-top: 2px; }

.c-dir   { color: var(--green); }
.c-type  { color: var(--muted); }
.c-brace { color: var(--paper-2); }
.c-dim   { color: var(--muted); }
.c-hit   { color: var(--clay); }

.session-step {
  display: grid;
  grid-template-columns: minmax(0, auto) 14px minmax(0, 1fr);
  align-items: baseline; gap: 8px;
  font: 400 12.5px/1.6 var(--mono);
  padding: 5px 0;
  border-bottom: 1px dashed var(--line-soft);
}
.step-tool  { color: var(--green-lit); overflow-wrap: anywhere; }
.step-arrow { color: var(--line); }
.step-out   { color: var(--paper-2); overflow-wrap: anywhere; }
.step-hit   { color: var(--clay); }
.conf       { color: var(--muted); }

/* ── sections ─────────────────────────────────────────────────────────── */

.section { padding: clamp(56px, 8vw, 96px) 0; border-bottom: 1px solid var(--line-soft); }
.section-alt { background: var(--ink-2); }

/* ── diagram ──────────────────────────────────────────────────────────── */

.diagram-scroll { overflow-x: auto; margin: 8px 0 44px; padding-bottom: 6px; }
.diagram { display: block; width: 100%; min-width: 700px; height: auto; }
.d-node rect { fill: var(--ink-2); stroke: var(--line); stroke-width: 1; }
.d-node-key rect { fill: var(--ink-3); stroke: var(--green); }
.d-node-core rect { fill: var(--ink-3); stroke: var(--clay); }
.d-title { fill: var(--paper); font: 600 15px var(--mono); text-anchor: middle; }
.d-sub   { fill: var(--muted); font: 400 11.5px var(--mono); text-anchor: middle; }
.d-edge  { fill: var(--muted); font: 400 11px var(--mono); text-anchor: middle; }
.d-edge-alt { fill: var(--line); }
.d-note  { fill: var(--muted); font: 400 11px var(--mono); text-anchor: middle; }
.diagram line { stroke: var(--line); stroke-width: 1; }

/* ── cards ────────────────────────────────────────────────────────────── */

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.card {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 26px;
}
.section-alt .card { background: var(--ink); }
.card h3 { font: 600 1.15rem var(--mono); letter-spacing: -.01em; }
.card-role { font: 400 11px/1 var(--mono); color: var(--green); letter-spacing: .1em; text-transform: uppercase; margin: 6px 0 14px; }
.card p { font-size: .95rem; }

.spec { margin: 18px 0 0; display: grid; gap: 6px; border-top: 1px solid var(--line-soft); padding-top: 14px; }
.spec > div { display: flex; gap: 12px; font: 400 12.5px/1.6 var(--mono); }
.spec dt { color: var(--muted); flex: 0 0 68px; }
.spec dd { margin: 0; color: var(--paper-2); }
.spec code { background: none; padding: 0; }

/* ── aside / warn ─────────────────────────────────────────────────────── */

.aside, .warn {
  margin-top: 36px;
  padding: 22px 24px;
  border-left: 2px solid var(--green);
  background: var(--ink-2);
  border-radius: 0 var(--r) var(--r) 0;
}
.section-alt .aside, .section-alt .warn { background: var(--ink); }
.aside p, .warn li { font-size: .93rem; }
.aside p:last-child { margin-bottom: 0; }

.warn { border-left-color: var(--clay); }
.warn ul { margin: 0; padding-left: 20px; display: grid; gap: 8px; }
.warn strong { color: var(--paper); }

/* ── choose cards ─────────────────────────────────────────────────────── */

.choose { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.choose-card {
  display: grid; gap: 8px; align-content: start;
  padding: 28px;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--r);
  text-decoration: none;
  transition: border-color .15s, transform .15s;
}
.choose-card:hover { border-color: var(--green); transform: translateY(-2px); }
.choose-tag { font: 500 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--clay); }
.choose-h { font: 600 1.3rem var(--sans); color: var(--paper); letter-spacing: -.02em; }
.choose-p { font-size: .93rem; color: var(--paper-2); }
.choose-go { font: 500 .88rem var(--mono); color: var(--green-lit); margin-top: 6px; }

/* ── endpoint ─────────────────────────────────────────────────────────── */

.endpoint {
  display: flex; flex-wrap: wrap; align-items: center; gap: 14px;
  padding: 18px 20px;
  background: var(--ink-2);
  border: 1px solid var(--green);
  border-radius: var(--r);
  margin-bottom: 36px;
}
.endpoint-label {
  font: 500 10.5px/1 var(--mono); letter-spacing: .14em;
  text-transform: uppercase; color: var(--green);
  flex: 0 0 auto;
}
.endpoint-url {
  font: 500 clamp(.85rem, 2.4vw, 1.05rem) var(--mono);
  color: var(--paper); background: none; padding: 0;
  flex: 1 1 240px; overflow-wrap: anywhere;
}

.copy {
  font: 500 11.5px/1 var(--mono);
  color: var(--paper-2);
  background: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 7px 12px;
  cursor: pointer;
  flex: 0 0 auto;
  transition: color .15s, border-color .15s;
}
.copy:hover { color: var(--paper); border-color: var(--green); }
.copy[data-copied] { color: var(--green-lit); border-color: var(--green); }

/* ── tabs ─────────────────────────────────────────────────────────────── */

.tabs { margin-bottom: 8px; }
.tablist { display: flex; flex-wrap: wrap; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 24px; }
.tablist button {
  font: 500 .88rem/1 var(--sans);
  color: var(--muted);
  background: none; border: 0;
  border-bottom: 2px solid transparent;
  padding: 12px 16px; margin-bottom: -1px;
  cursor: pointer;
}
.tablist button:hover { color: var(--paper-2); }
.tablist button[aria-selected="true"] { color: var(--paper); border-bottom-color: var(--green); }

.steps { margin: 0 0 16px; padding-left: 22px; display: grid; gap: 10px; font-size: .95rem; }
.steps strong { color: var(--paper); }

/* ── code blocks ──────────────────────────────────────────────────────── */

.code {
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--r);
  margin: 0 0 20px;
}
.section-alt .code { background: var(--ink); }
.code .copy { position: absolute; top: 10px; right: 10px; z-index: 2; }
.code pre {
  margin: 0;
  padding: 20px 92px 20px 20px;
  overflow-x: auto;
  font: 400 13px/1.75 var(--mono);
  color: var(--paper-2);
  white-space: pre;
}
.code .cmd { color: var(--green-lit); }
.code .k   { color: var(--green); }
.code .s   { color: var(--paper); }

/* ── tools ────────────────────────────────────────────────────────────── */

.filter { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
#tool-filter {
  flex: 1 1 280px; max-width: 420px;
  font: 400 .95rem var(--mono);
  color: var(--paper);
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 11px 15px;
}
#tool-filter::placeholder { color: var(--muted); }
#tool-filter:focus { border-color: var(--green); }
.filter-count { font: 400 12px/1 var(--mono); color: var(--muted); }

.tool-groups { display: grid; gap: 32px; }
.tool-group[hidden] { display: none; }
.tool-group-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.tool-group-name { font: 600 1rem var(--sans); color: var(--paper); letter-spacing: -.01em; }
.tool-group-note { font-size: .87rem; color: var(--muted); }

.tool-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(272px, 1fr)); gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--r); overflow: hidden; }
.tool {
  background: var(--ink);
  padding: 13px 16px;
  display: grid; gap: 3px;
}
.section-alt .tool { background: var(--ink-2); }
.tool[hidden] { display: none; }
.tool-name { font: 500 12.5px/1.4 var(--mono); color: var(--green-lit); overflow-wrap: anywhere; }
.tool-title { font-size: .85rem; color: var(--muted); }
.tool mark { background: rgba(111,191,164,.2); color: var(--paper); border-radius: 2px; }

.empty { font-size: .95rem; color: var(--muted); padding: 28px 0; }

/* ── tables ───────────────────────────────────────────────────────────── */

.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); margin-bottom: 8px; }
table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
th { font: 500 11.5px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); background: var(--ink-3); }
tbody tr:last-child td { border-bottom: 0; }
td:first-child { white-space: nowrap; }
td em { color: var(--muted); font-style: normal; font-family: var(--mono); font-size: .85em; }

/* ── blog ─────────────────────────────────────────────────────────────── */

/* Post pages have no hero, so the first section needs to clear the sticky
   topbar on its own. */
.post-head { padding-bottom: 0; border-bottom: 0; }
.page-title {
  font-size: clamp(2rem, 4.4vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 650;
  color: var(--paper);
  margin: 0 0 18px;
}
.post-head .section-lede { margin-bottom: 0; }

.back {
  display: inline-block;
  font: 400 .85rem var(--mono);
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 26px;
}
.back:hover { color: var(--green-lit); }

.nav a[aria-current="page"] { color: var(--paper); border-bottom-color: var(--green); }

/* index listing */
.post-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 20px; }
.post-item { margin: 0; }
.post-link {
  display: grid; gap: 8px;
  padding: 28px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--r);
  text-decoration: none;
  transition: border-color .15s, transform .15s;
}
.post-link:hover { border-color: var(--green); transform: translateY(-2px); }
.post-date { font: 400 11.5px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--clay); }
.post-title { font-size: 1.45rem; letter-spacing: -.02em; margin: 0; color: var(--paper); }
.post-excerpt { margin: 0; font-size: .96rem; color: var(--paper-2); max-width: 66ch; }
.post-more { font: 500 .88rem var(--mono); color: var(--green-lit); margin-top: 6px; }

/* article body */
.post-body { padding-top: 40px; }
/* .prose sits inside .wrap, which already centres and gutters it — constrain
   the measure only, and don't touch the inline margins. */
.prose { max-width: 68ch; }
.prose > p { font-size: 1.04rem; line-height: 1.75; margin: 0 0 22px; }
.prose h2 {
  font-size: clamp(1.3rem, 2.4vw, 1.6rem);
  margin: 44px 0 16px;
  letter-spacing: -.02em;
}
.prose strong { color: var(--paper); font-weight: 600; }
.prose em { color: var(--paper); font-style: italic; }
.prose .aside { margin: 32px 0; }
.prose .code { margin: 26px 0; }
.prose .code pre { padding: 20px; }
.prose .fine { margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--line-soft); }

.post-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 34px 0 8px; }

@media (max-width: 560px) {
  .post-link { padding: 22px; }
  .post-cta .btn { flex: 1 1 100%; }
}

/* ── team ─────────────────────────────────────────────────────────────── */

.team-grid {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px;
}
.member {
  display: grid; gap: 6px; align-content: start;
  padding: 30px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--r);
}
.member-mark {
  display: grid; place-items: center;
  width: 44px; height: 44px; margin-bottom: 14px;
  border: 1px solid var(--green);
  border-radius: var(--r);
  font: 600 20px/1 var(--mono);
  color: var(--green-lit);
}
.member-name { font-size: 1.25rem; letter-spacing: -.02em; margin: 0; }
.member-role {
  font: 500 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--clay); margin: 2px 0 10px;
}
.member-bio { margin: 0; font-size: .95rem; color: var(--paper-2); }
.member-links { margin: 14px 0 0; display: flex; gap: 16px; font: 400 .88rem var(--mono); }

@media (max-width: 560px) { .member { padding: 24px; } }

/* ── footer ───────────────────────────────────────────────────────────── */

.footer { padding: 48px 0; background: var(--ink); }
.footer-inner { display: flex; flex-wrap: wrap; gap: 28px; justify-content: space-between; align-items: start; }
.footer-brand { font: 600 15px/1 var(--mono); color: var(--paper); margin: 0 0 10px; }
.footer .fine { max-width: 46ch; margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 22px; font: 400 .88rem var(--mono); }
.footer-links a { color: var(--paper-2); text-decoration: none; }
.footer-links a:hover { color: var(--green-lit); }

/* ── responsive ───────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .nav { display: none; }
  .status { margin-left: auto; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .topbar-inner { height: 54px; gap: 12px; }
  .status-text { display: none; }
  .status { padding: 8px; }
  .hero-actions .btn { flex: 1 1 100%; }
  .code pre { padding: 18px 16px; font-size: 12px; }
  .code .copy { position: static; margin: 0 16px 16px; }
  .session-body { padding: 14px; }
  .tool-list { grid-template-columns: 1fr; }
}