/* Interactive architecture widgets (tech guides). Uses the site CSS variables. */
:root { --arch-line: #8792a2; --arch-line-op: .55; --arch-node-stroke: #aab3c0; --arch-err: #e5484d; --arch-ok: #2ea043; --arch-warn: #d29922; }
@media (prefers-color-scheme: dark) {
  :root { --arch-line: #a9b7c9; --arch-line-op: .5; --arch-node-stroke: #6b7c90; --arch-err: #ff6b6b; --arch-ok: #4cc26a; --arch-warn: #e3b341; }
}

/* Pages are as wide as the widgets (1640px, see src/shared.js .page) */
.arch-wide { width: 100%; }

.arch-widget { border: 1px solid var(--border); border-radius: 12px; background: var(--bg-soft); margin: 1rem 0 1.5rem; overflow: hidden; }
.arch-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 12px 14px; border-bottom: 1px solid var(--border); background: var(--bg-elev); }
.arch-toolbar .lbl { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-right: 4px; font-weight: 700; }
.arch-btn { font: inherit; font-size: 13.5px; padding: 5px 12px; border-radius: 999px; border: 1px solid var(--border); background: var(--bg-soft); color: var(--text); cursor: pointer; }
.arch-btn:hover { border-color: var(--accent); color: var(--accent); }
.arch-btn.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.arch-body { display: grid; grid-template-columns: minmax(0, 1fr) 360px; min-height: 480px; }
.arch-body.arch-stack { grid-template-columns: 1fr; min-height: 0; }
@media (max-width: 1100px) { .arch-body { grid-template-columns: 1fr; } }
.arch-canvas { position: relative; overflow: auto; padding: 10px; }
.arch-canvas svg { display: block; width: 100%; min-width: 980px; height: auto; }
.arch-panel { border-left: 1px solid var(--border); padding: 16px 18px; background: var(--bg-elev); font-size: 14.5px; max-height: 760px; overflow: auto; }
.arch-panel-wide { border-left: none; border-top: 1px solid var(--border); max-height: none; padding: 18px 22px 22px; }
@media (max-width: 1100px) { .arch-panel { border-left: none; border-top: 1px solid var(--border); max-height: none; } }
.arch-panel h3 { margin: 0 0 2px; font-size: 21px; color: var(--text); text-transform: none; letter-spacing: 0; }
.arch-panel .kind { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); font-weight: 700; }
.arch-panel h4 { margin: 14px 0 8px; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.arch-panel p { margin: 6px 0; color: var(--text); line-height: 1.55; }
.arch-panel ul { margin: 4px 0; padding-left: 18px; }
.arch-panel li { margin: 4px 0; line-height: 1.5; }
.arch-empty { color: var(--muted); font-size: 15px; margin: 4px 0 !important; }
.ap-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.ap-role { font-size: 15.5px; max-width: 980px; }
.ap-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 6px; }
@media (max-width: 1000px) { .ap-cols { grid-template-columns: 1fr; gap: 4px; } }
.arch-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.arch-chip { font-size: 13px; font-family: var(--mono); padding: 3px 10px; border-radius: 999px; border: 1px solid var(--border); background: var(--bg-soft); color: var(--text); }
.arch-conn { display: flex; gap: 8px; align-items: baseline; margin: 6px 0; cursor: pointer; }
.arch-conn:hover b { color: var(--accent); }
.arch-conn .dir { font-family: var(--mono); color: var(--muted); font-size: 13px; min-width: 14px; }
.arch-conn .via { color: var(--muted); font-size: 13px; }
.arch-hint { color: var(--muted); font-size: 13.5px; }

/* "How to use" note above a widget */
.arch-howto { border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: 10px; padding: 8px 16px; background: var(--bg-elev); margin: 0.5rem 0 1rem; font-size: 14.5px; line-height: 1.55; }
.arch-howto summary { cursor: pointer; list-style: none; display: flex; align-items: center; gap: 8px; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); font-weight: 700; user-select: none; }
.arch-howto summary::-webkit-details-marker { display: none; }
.arch-howto summary::after { content: '▸'; margin-left: 2px; transition: transform .15s; }
.arch-howto[open] summary::after { transform: rotate(90deg); }
.arch-howto summary .ico { font-size: 16px; }
.arch-howto ul { margin: 8px 0 6px; padding-left: 20px; }
.arch-howto p { margin: 0; }

/* SVG nodes and edges */
.an-col-title { fill: var(--muted); font-size: 13px; letter-spacing: .1em; text-transform: uppercase; font-weight: 700; }
.an-col-bg { fill: var(--bg-elev); stroke: var(--border); stroke-dasharray: 4 4; }
.an-node { cursor: pointer; }
.an-node rect { fill: var(--bg-elev); stroke: var(--arch-node-stroke); stroke-width: 1.5; rx: 9; transition: all .15s; }
.an-node text { fill: var(--text); font-size: 16px; font-weight: 650; pointer-events: none; }
.an-node text.sub { fill: var(--muted); font-size: 12.5px; font-weight: 400; font-family: var(--mono); }
.an-node:hover rect { stroke: var(--accent); }
.an-node.sel rect { stroke: var(--accent); stroke-width: 2.5; fill: var(--accent-soft); }
.an-node.rel rect { stroke: var(--m-post-fg, var(--arch-ok)); }
.an-node.dim { opacity: .28; }
.an-node.k-client rect { stroke-dasharray: 5 3; }
.an-node.k-infra rect { fill: var(--bg-soft); }
.an-node.k-external rect { stroke-dasharray: 2 3; }
.an-node.k-deprecated text { text-decoration: line-through; }
.an-edge { pointer-events: stroke; fill: none; stroke: var(--arch-line); color: var(--arch-line); stroke-width: 1.5; opacity: var(--arch-line-op); transition: all .15s; }
.an-edge.async { stroke-dasharray: 6 4; }
.an-edge.on { stroke: var(--accent); color: var(--accent); opacity: 1; stroke-width: 2.4; }
.an-edge.dim { opacity: .08; }
.an-edge-label { fill: var(--accent); font-size: 11px; font-family: var(--mono); display: none; }
.an-edge-label.on { display: block; }
.arch-legend { display: flex; flex-wrap: wrap; gap: 18px; padding: 10px 14px; border-top: 1px solid var(--border); font-size: 13px; color: var(--muted); }
.arch-legend svg { vertical-align: middle; margin-right: 6px; color: var(--arch-line); }

/* Tabs */
.arch-tabbar { display: flex; gap: 4px; padding: 10px 12px 0; border-bottom: 1px solid var(--border); background: var(--bg-elev); }
.arch-tab { font: inherit; font-size: 15px; font-weight: 600; padding: 9px 18px; border: 1px solid transparent; border-bottom: none; border-radius: 10px 10px 0 0; background: none; color: var(--muted); cursor: pointer; margin-bottom: -1px; }
.arch-tab:hover { color: var(--text); }
.arch-tab.on { color: var(--accent); background: var(--bg-soft); border-color: var(--border); }
.arch-tab small { font-weight: 400; color: var(--muted); margin-left: 6px; font-size: 12.5px; }
.arch-tabpanel { padding: 0; }
.arch-tabpanel > .arch-tab-intro { padding: 14px 18px 0; margin: 0; color: var(--text); font-size: 14.5px; }
.arch-tabpanel .arch-widget { border: none; border-radius: 0; margin: 0; }

/* Layer explorer */
.layers { display: grid; grid-template-columns: minmax(0, 1fr) 420px; gap: 0; }
@media (max-width: 1000px) { .layers { grid-template-columns: 1fr; } }
.layer-stack { padding: 18px; display: flex; flex-direction: column; gap: 8px; }
.layer { border: 1px solid var(--arch-node-stroke); border-radius: 9px; padding: 12px 16px; background: var(--bg-elev); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 10px; transition: all .15s; }
.layer:hover { border-color: var(--accent); }
.layer.sel { border-color: var(--accent); background: var(--accent-soft); }
.layer .name { font-weight: 700; color: var(--text); font-size: 15.5px; }
.layer .ex { font-family: var(--mono); font-size: 12.5px; color: var(--muted); }
.layer.adapter { border-style: dashed; }
.layer-row { display: flex; gap: 8px; }
.layer-row .layer { flex: 1; }
.layer-arrow { text-align: center; color: var(--muted); font-size: 13px; line-height: 1; }
.hex-ring { margin: 4px 0; padding: 12px; border: 1px dashed var(--arch-node-stroke); border-radius: 14px; display: flex; flex-direction: column; gap: 8px; }
.hex-ring > .ring-title { font-size: 11.5px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); font-weight: 700; }

/* Sequence player */
.seq-canvas svg { min-width: 900px; }
.sq-actor rect { fill: var(--bg-elev); stroke: var(--arch-node-stroke); stroke-width: 1.5; }
.sq-actor text { fill: var(--text); font-size: 15px; font-weight: 650; }
.sq-actor text.sub { fill: var(--muted); font-size: 12px; font-weight: 400; font-family: var(--mono); }
.sq-actor.active rect { stroke: var(--accent); fill: var(--accent-soft); }
.sq-life { stroke: var(--arch-line); opacity: .45; stroke-dasharray: 4 4; }
.sq-msg line, .sq-msg path { stroke: var(--arch-line); color: var(--arch-line); stroke-width: 1.6; fill: none; opacity: .5; }
.sq-msg text { fill: var(--muted); font-size: 13.5px; opacity: .6; }
.sq-msg.async line, .sq-msg.async path { stroke-dasharray: 6 4; }
.sq-msg.reply line, .sq-msg.reply path { stroke-dasharray: 2 3; }
.sq-msg.retry line, .sq-msg.retry path { stroke-dasharray: 8 3 2 3; }
.sq-msg.error line, .sq-msg.error path { stroke: var(--arch-err); color: var(--arch-err); }
.sq-msg.error text { fill: var(--arch-err); }
.sq-x { fill: var(--arch-err) !important; font-weight: 800; font-size: 15px !important; opacity: 1 !important; }
.sq-msg.done line, .sq-msg.done path, .sq-msg.done text { opacity: .95; }
.sq-msg.done:not(.error) line, .sq-msg.done:not(.error) path { stroke: var(--m-post-fg, var(--arch-ok)); color: var(--m-post-fg, var(--arch-ok)); }
.sq-msg.done text { fill: var(--text); }
.sq-msg.done.error text { fill: var(--arch-err); }
.sq-msg.cur line, .sq-msg.cur path { stroke: var(--accent); color: var(--accent); stroke-width: 3; opacity: 1; }
.sq-msg.cur.error line, .sq-msg.cur.error path { stroke: var(--arch-err); color: var(--arch-err); }
.sq-msg.cur text { fill: var(--accent); opacity: 1; font-weight: 700; }
.sq-msg.cur.error text { fill: var(--arch-err); }
.sq-msg { cursor: pointer; }
.seq-cols { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 28px; }
@media (max-width: 1000px) { .seq-cols { grid-template-columns: 1fr; } }
.seq-steps { list-style: none; padding: 0; margin: 0; counter-reset: s; columns: 2; column-gap: 16px; }
@media (max-width: 1000px) { .seq-steps { columns: 1; } }
.seq-steps li { padding: 5px 8px; border-radius: 6px; cursor: pointer; font-size: 13.5px; color: var(--muted); display: flex; gap: 8px; break-inside: avoid; }
.seq-steps li::before { counter-increment: s; content: counter(s); font-family: var(--mono); color: var(--muted); min-width: 18px; }
.seq-steps li:hover { background: var(--bg-soft); color: var(--text); }
.seq-steps li.done { color: var(--text); }
.seq-steps li.err { color: var(--arch-err); }
.seq-steps li.cur { background: var(--accent-soft); color: var(--text); font-weight: 600; }
.seq-progress { height: 3px; background: var(--border); }
.seq-progress > div { height: 3px; background: var(--accent); width: 0; transition: width .25s; }
.seq-note { border-left: 3px solid var(--accent); padding: 8px 12px; background: var(--bg-soft); border-radius: 0 8px 8px 0; margin: 10px 0; }
.seq-note.k-error { border-left-color: var(--arch-err); }
.seq-note.k-retry { border-left-color: var(--arch-warn); }
.seq-note.k-result { border-left-color: var(--arch-ok); }
.seq-note .who { font-family: var(--mono); font-size: 12px; color: var(--accent); }
.seq-note.k-error .who { color: var(--arch-err); }
.seq-legend { display: flex; flex-wrap: wrap; gap: 18px; padding: 10px 14px; border-top: 1px solid var(--border); font-size: 13px; color: var(--muted); }
.seq-legend svg { vertical-align: middle; margin-right: 6px; }

/* Cards: deployment, catalog, patterns */
.arch-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; margin: 1rem 0; }
.arch-card { border: 1px solid var(--border); border-radius: 12px; background: var(--bg-elev); padding: 16px 18px; }
.arch-card h3 { margin: 0 0 4px; font-size: 18px; color: var(--text); text-transform: none; letter-spacing: 0; display: flex; align-items: center; gap: 8px; }
.arch-card h3 .ico { font-size: 20px; }
.arch-card .sub { color: var(--muted); font-size: 13.5px; margin: 0 0 10px; line-height: 1.5; }
.arch-card p { font-size: 14.5px; line-height: 1.55; margin: 6px 0; }
.tech-list { list-style: none; padding: 0; margin: 8px 0 0; display: flex; flex-direction: column; gap: 6px; }
.tech-list li { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; padding: 6px 10px; border-radius: 8px; background: var(--bg-soft); border: 1px solid var(--border); }
.tech-list li b { font-size: 15px; color: var(--text); font-weight: 650; }
.tech-list li span { font-size: 12.5px; color: var(--muted); text-align: right; }

.env-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; margin: 1rem 0; }
.env { border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; background: var(--bg-elev); position: relative; }
.env b { display: block; font-size: 16px; color: var(--text); }
.env code { font-size: 12.5px; }
.env .tag { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.env.prod { border-color: var(--accent); box-shadow: inset 0 3px 0 var(--accent); }
.k8s { border: 2px dashed var(--arch-node-stroke); border-radius: 14px; padding: 14px; margin: 1rem 0; }
.k8s > .k8s-title { font-size: 12px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); font-weight: 700; margin-bottom: 10px; }
.k8s-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.ns { border: 1px solid var(--arch-node-stroke); border-radius: 12px; padding: 12px 14px; background: var(--bg-elev); }
.ns h4 { margin: 0 0 2px; font-size: 16px; color: var(--text); text-transform: none; letter-spacing: 0; }
.ns .sub { font-size: 12.5px; color: var(--muted); margin-bottom: 8px; }
.ns .pods { display: flex; flex-wrap: wrap; gap: 6px; }
.ns .pod { font-family: var(--mono); font-size: 13px; padding: 3px 9px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg-soft); color: var(--text); }
.pipeline { display: flex; flex-wrap: wrap; align-items: stretch; gap: 0; margin: 1rem 0; }
.pipeline .st { flex: 1 1 160px; border: 1px solid var(--border); background: var(--bg-elev); padding: 12px 14px; border-radius: 10px; position: relative; margin-right: 26px; }
.pipeline .st:last-child { margin-right: 0; }
.pipeline .st:not(:last-child)::after { content: '→'; position: absolute; right: -21px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 18px; }
.pipeline .st b { display: block; font-size: 15.5px; color: var(--text); }
.pipeline .st span { font-size: 13px; color: var(--muted); line-height: 1.45; display: block; margin-top: 2px; }

/* Communication patterns (mini diagrams) */
.pattern-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 14px; margin: 1rem 0; }
.pattern { border: 1px solid var(--border); border-radius: 12px; background: var(--bg-elev); padding: 14px 16px; }
.pattern h3 { margin: 0 0 2px; font-size: 17px; color: var(--text); text-transform: none; letter-spacing: 0; }
.pattern .mech { font-family: var(--mono); font-size: 12.5px; color: var(--accent); }
.pattern svg { width: 100%; height: auto; margin: 10px 0 6px; display: block; }
.pattern svg .box { fill: var(--bg-soft); stroke: var(--arch-node-stroke); stroke-width: 1.3; }
.pattern svg .box.hl { stroke: var(--accent); fill: var(--accent-soft); }
.pattern svg text { fill: var(--text); font-size: 12.5px; font-weight: 600; }
.pattern svg text.lbl { fill: var(--muted); font-size: 11px; font-weight: 400; font-family: var(--mono); }
.pattern svg .ln { stroke: var(--arch-line); stroke-width: 1.6; fill: none; }
.pattern svg .ln.async { stroke-dasharray: 6 4; }
.pattern svg .ln.reply { stroke-dasharray: 2 3; }
.pattern svg .ln.err { stroke: var(--arch-err); }
.pattern p { margin: 4px 0 0; font-size: 14px; line-height: 1.5; color: var(--text); }
.pattern .use { font-size: 13px; color: var(--muted); margin-top: 6px; }

/* panel typography overrides (site base styles are larger) */
.arch-panel code { word-break: break-word; white-space: normal; font-size: 12.5px; }
.arch-panel pre { white-space: pre-wrap; word-break: break-word; font-size: 12.5px; margin: 6px 0; }
.arch-panel pre code { white-space: pre-wrap; }

/* Layer explorer: services of the tab + lifecycle */
.lp-services { padding-bottom: 12px; margin-bottom: 12px; border-bottom: 1px solid var(--border); }
.lp-services h4 { margin-top: 0 !important; }
.lifecycle { padding: 16px 18px 18px; border-top: 1px solid var(--border); }
.lifecycle > h4 { margin: 0 0 10px; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.lc-track { display: flex; flex-wrap: wrap; align-items: stretch; gap: 0; }
.lc-step { flex: 1 1 120px; min-width: 120px; position: relative; margin: 0 22px 10px 0; border: 1px solid var(--arch-node-stroke); border-radius: 10px; padding: 10px 12px 10px; background: var(--bg-elev); cursor: pointer; transition: all .15s; }
.lc-step:hover, .lc-step.sel { border-color: var(--accent); background: var(--accent-soft); }
.lc-step:not(:last-child)::after { content: '→'; position: absolute; right: -18px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 15px; }
.lc-step .n { font-family: var(--mono); font-size: 11px; color: var(--muted); }
.lc-step b { display: block; font-size: 14px; color: var(--text); line-height: 1.3; margin: 2px 0; }
.lc-step span { display: block; font-size: 12px; color: var(--muted); line-height: 1.4; font-family: var(--mono); overflow-wrap: anywhere; }
.lc-step.k-edge { border-style: dotted; }
.lc-step.k-adapter { border-style: dashed; }
.lc-step.k-core { border-width: 2px; }
.lc-step.k-data { background: var(--bg-soft); }
.lc-legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: 12.5px; color: var(--muted); margin-top: 4px; }
.lc-legend i { display: inline-block; width: 18px; height: 11px; border-radius: 3px; border: 1px solid var(--arch-node-stroke); vertical-align: middle; margin-right: 5px; }