/* fate studio — Stately-style canvas. Theme via CSS custom properties. */

/* Palette: Sentry-inspired (see studio/DESIGN.md) — violet-midnight ink,
   electric lime as the scarce signature accent. Self-contained: system font
   stack (Rubik is the brand UI face when available), no external requests. */
:root {
  --bg: #ffffff; --fg: #1f1633; --muted: #79708a;
  --surface: #ffffff; --border: #e5e7eb; --canvas: #f6f5fb;
  --accent: #6a5fc1; --accent-soft: #ede9fb;     /* violet */
  --primary: #150f23; --on-primary: #ffffff;     /* near-black CTA */
  --lime: #c2ef4e; --pink: #fa7faa;
  --active: #2f7d4f; --active-soft: #e3f4ea; --active-stroke: #34a853;
  --danger: #cf222e; --edge: #b8b2c8; --edge-active: #6a5fc1;
  --node-shadow: 0 1px 2px rgba(20,16,40,.08), 0 6px 16px rgba(20,16,40,.06);
  --radius: 10px;
  --font-ui: "Rubik", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "Monaco", ui-monospace, SFMono-Regular, Menlo, "Ubuntu Mono", monospace;
}
[data-theme="dark"] {
  --bg: #1f1633; --fg: #ffffff; --muted: #bdb8c0;
  --surface: #150f23; --border: #362d59; --canvas: #150f23;
  --accent: #a78bfa; --accent-soft: #2a2150;
  --primary: #ffffff; --on-primary: #150f23;
  --lime: #c2ef4e; --pink: #fa7faa;
  --active: #3fb950; --active-soft: #14271b; --active-stroke: #3fb950;
  --danger: #f85149; --edge: #4a4170; --edge-active: #a78bfa;
  --node-shadow: 0 1px 2px rgba(0,0,0,.5);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { font-family: var(--font-ui); background: var(--bg); color: var(--fg); }
body.sim { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--font-mono); }

/* header bar */
header.bar { display: flex; align-items: center; gap: .6rem; padding: .5rem 1rem;
  border-bottom: 1px solid var(--border); background: var(--surface); flex: 0 0 auto; z-index: 10; }
header.bar .title { font-weight: 700; letter-spacing: -.01em; }
header.bar .machine { color: var(--muted); font-family: ui-monospace, monospace; font-size: .85rem; }
header.bar .spacer { flex: 1; }
header.bar .badge { font-size: .68rem; padding: .12rem .5rem; border-radius: 999px;
  border: 1px solid var(--border); color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
header.bar .badge.running { color: var(--active); border-color: var(--active-stroke); background: var(--active-soft); }
header.bar .badge.done { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
header.bar .badge.disconnected { color: var(--danger); border-color: var(--danger); }

button, .btn { font: inherit; font-size: .82rem; cursor: pointer; padding: .32rem .65rem;
  border: 1px solid var(--border); border-radius: 7px; background: var(--surface); color: var(--fg); }
button:hover { border-color: var(--accent); }
button:disabled { opacity: .45; cursor: not-allowed; }
.icon-btn { padding: .32rem .5rem; }

/* layout */
main.layout { flex: 1; display: flex; min-height: 0; }
.canvas { flex: 1.7; min-width: 0; position: relative; overflow: hidden;
  background: var(--canvas);
  background-image: radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 22px 22px; border-right: 1px solid var(--border); }
.canvas-inner { position: absolute; top: 0; left: 0; transform-origin: 0 0; }
#edges { position: absolute; top: 0; left: 0; overflow: visible; pointer-events: none; }
.canvas .hint { position: absolute; bottom: .5rem; left: .6rem; font-size: .7rem; color: var(--muted);
  background: var(--surface); padding: .12rem .45rem; border-radius: 5px; border: 1px solid var(--border); z-index: 5; }
.canvas .fit-btn { position: absolute; top: .5rem; right: .5rem; z-index: 5; }
#canvas-status { position: absolute; top: .5rem; left: .6rem; z-index: 6; font-size: .74rem;
  background: var(--surface); color: var(--muted); border: 1px solid var(--border);
  padding: .22rem .55rem; border-radius: 6px; box-shadow: var(--node-shadow); }
#canvas-status.warn { color: var(--danger); border-color: var(--danger); }

/* nodes — Stately-style state cards */
.node { position: absolute; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--node-shadow); overflow: hidden; }
/* Fixed header/row heights so the JS-computed node box (HEAD_H / ROW_H in
   app.js) always matches the rendered DOM — no clipped action rows, no drifted
   edge anchors. Text never wraps; long labels/targets ellipsize. */
.node .nhead { display: flex; align-items: center; gap: .35rem; height: 28px; padding: 0 .55rem;
  font-weight: 600; font-size: .82rem; border-bottom: 1px solid var(--border); cursor: grab;
  overflow: hidden; white-space: nowrap;
  background: linear-gradient(var(--surface), color-mix(in srgb, var(--surface) 92%, var(--border))); }
.node .nhead .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--fg); flex: 0 0 auto; }
.node .nhead .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1 1 auto; }
.node .nhead .ic { font-size: .7rem; color: var(--muted); flex: 0 0 auto; }
.node .erow { display: flex; align-items: center; justify-content: space-between; gap: .5rem;
  height: 22px; padding: 0 .55rem; white-space: nowrap; font-family: ui-monospace, monospace; font-size: .73rem;
  border-top: 1px solid color-mix(in srgb, var(--border) 55%, transparent); }
.node .erow:first-of-type { border-top: none; }
.node .erow .ev { color: var(--accent); font-weight: 600; flex: 0 0 auto; }
.node .erow .gd { color: var(--muted); font-size: .68rem; overflow: hidden; text-overflow: ellipsis; }
.node .erow .tg { color: var(--muted); overflow: hidden; text-overflow: ellipsis; flex: 0 1 auto; text-align: right; }
/* container (compound/parallel) nodes */
.node.container { background: color-mix(in srgb, var(--surface) 60%, transparent);
  border-style: solid; }
.node.container.parallel { border-style: dashed; }
.node.container > .nhead { background: transparent; cursor: grab; }
/* active state */
.node.active { border-color: var(--active-stroke); box-shadow: 0 0 0 2px var(--active-soft), var(--node-shadow); }
.node.active > .nhead { background: var(--active-soft); color: var(--active); }
.node.active > .nhead .dot { background: var(--active-stroke); }
.node.final > .nhead { box-shadow: inset 0 0 0 2px var(--surface), inset 0 0 0 3px var(--border); }
/* clickable (sendable) event rows during simulation */
.node .erow.sendable { cursor: pointer; }
.node .erow.sendable:hover { background: var(--accent-soft); }
.node .erow.sendable .ev::before { content: "▸ "; }

/* edges */
#edges path { fill: none; stroke: var(--edge); stroke-width: 1.5; }
#edges path.active { stroke: var(--edge-active); stroke-width: 2.2; }
#edges .elabel { fill: var(--muted); font: 10px ui-monospace, monospace; }
#edges marker path { stroke: none; }

/* inspector */
.inspector { flex: 1; min-width: 290px; max-width: 420px; overflow-y: auto; padding: .85rem 1rem;
  display: flex; flex-direction: column; gap: 1rem; background: var(--bg); }
.inspector h2 { font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 .35rem; }
.inspector .panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: .55rem .7rem; }
#state-path { font-family: ui-monospace, monospace; font-size: .8rem; word-break: break-all; }
#event-btns { display: flex; flex-wrap: wrap; gap: .35rem; }
.evt-btn { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
  color: var(--accent); font-family: ui-monospace, monospace; font-size: .76rem; }

/* pending effects (timers + invocations) */
#effects { display: flex; flex-direction: column; gap: .5rem; }
.effect { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  border-left: 3px solid var(--accent); padding: .45rem .55rem; }
.effect.timer { border-left-color: var(--active-stroke); }
.effect .ekind { font-family: ui-monospace, monospace; font-size: .72rem; font-weight: 600; color: var(--muted); }
.effect .edelay { font-family: ui-monospace, monospace; font-size: .76rem; color: var(--active); font-weight: 600; }
.effect .esrc { font-family: ui-monospace, monospace; font-size: .76rem; color: var(--accent); font-weight: 600; }
.effect .ectrls { display: flex; flex-wrap: wrap; gap: .35rem; width: 100%; }
.effect .einput { flex: 1 1 100%; min-width: 0; padding: .28rem .45rem; border: 1px solid var(--border);
  border-radius: 6px; background: var(--bg); color: var(--fg); font-family: ui-monospace, monospace; font-size: .72rem; }
.evt-btn.ok { background: var(--active-soft); border-color: var(--active-stroke); color: var(--active); }
.evt-btn.err { background: color-mix(in srgb, var(--danger) 12%, transparent); border-color: var(--danger); color: var(--danger); }
#context { margin: 0; font-family: ui-monospace, monospace; font-size: .76rem; white-space: pre-wrap;
  word-break: break-word; max-height: 220px; overflow: auto; }
#context .hit { background: color-mix(in srgb, var(--accent) 30%, transparent); border-radius: 2px; }
.filter-row { margin-bottom: .4rem; }
.filter-row input { width: 100%; padding: .3rem .45rem; border: 1px solid var(--border); border-radius: 6px;
  background: var(--bg); color: var(--fg); font: inherit; font-size: .78rem; }
#timeline { list-style: none; margin: 0; padding: 0; max-height: 200px; overflow: auto;
  font-family: ui-monospace, monospace; font-size: .74rem; }
#timeline li { padding: .22rem .4rem; border-radius: 5px; display: flex; justify-content: space-between; gap: .5rem; }
#timeline li .ev { color: var(--accent); }
#timeline li .arrow { color: var(--muted); }

/* toasts */
#toasts { position: fixed; bottom: 1rem; right: 1rem; display: flex; flex-direction: column; gap: .5rem; z-index: 50; }
.toast { background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--accent);
  border-radius: 7px; padding: .5rem .75rem; box-shadow: var(--node-shadow); font-size: .8rem; max-width: 340px; animation: tin .15s ease-out; }
.toast.error { border-left-color: var(--danger); }
.toast.ok { border-left-color: var(--active-stroke); }
@keyframes tin { from { opacity: 0; transform: translateY(6px); } }

/* ---------- welcome / landing page ---------- */
.welcome { max-width: 1080px; margin: 0 auto; padding: 0 24px 64px; }
.welcome .topbar { display: flex; align-items: center; gap: .6rem; padding: 20px 0; }
.welcome .brand { font-weight: 700; font-size: 1.05rem; letter-spacing: -.01em; }
.welcome .brand .mono { font-family: var(--font-mono); color: var(--accent); }
.welcome .topbar .spacer { flex: 1; }
.welcome .topbar a { color: var(--muted); font-size: .9rem; }
.welcome .topbar a:hover { color: var(--fg); }

/* hero — dark violet-midnight band with the lime keyword chip */
.hero { background: #1f1633; color: #fff; border-radius: 18px; padding: 64px 48px;
  position: relative; overflow: hidden;
  background-image: radial-gradient(rgba(255,255,255,.10) 1px, transparent 1px); background-size: 26px 26px; }
.hero .eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .72rem; font-weight: 600;
  color: var(--lime); margin: 0 0 16px; }
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); line-height: 1.08; font-weight: 700; margin: 0 0 18px;
  letter-spacing: -.02em; max-width: 16ch; }
.hero h1 .chip { background: var(--lime); color: #1f1633; border-radius: 5px; padding: 0 .28em; }
.hero p { font-size: 1.06rem; line-height: 1.7; color: rgba(255,255,255,.78); max-width: 56ch; margin: 0 0 28px; }
.hero .cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn-primary { display: inline-block; background: #fff; color: #150f23; border: none; border-radius: 8px;
  padding: 12px 18px; font-weight: 700; font-size: .82rem; text-transform: uppercase; letter-spacing: .04em; }
.btn-primary:hover { text-decoration: none; background: #efefef; }
.btn-ghost { display: inline-block; background: rgba(255,255,255,.10); color: #fff; border: 1px solid rgba(255,255,255,.22);
  border-radius: 8px; padding: 12px 18px; font-weight: 600; font-size: .82rem; }
.btn-ghost:hover { text-decoration: none; background: rgba(255,255,255,.18); }
.hero .install { margin-top: 26px; display: inline-flex; align-items: center; gap: 10px;
  background: #150f23; border: 1px solid #362d59; border-radius: 8px; padding: 10px 14px;
  font-family: var(--font-mono); font-size: .82rem; color: #e6e1f0; }
.hero .install .pmt { color: var(--lime); }

/* machine gallery */
.section-head { margin: 48px 0 6px; font-size: 1.35rem; font-weight: 700; letter-spacing: -.01em; }
.section-sub { color: var(--muted); margin: 0 0 24px; font-size: .95rem; }
.machines-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(248px, 1fr)); gap: 16px; }
.machine-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px;
  display: flex; flex-direction: column; gap: 10px; box-shadow: var(--node-shadow); transition: border-color .12s, transform .12s; }
.machine-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.machine-card .mname { font-family: var(--font-mono); font-weight: 600; font-size: 1rem; color: var(--fg); }
.machine-card .msum { color: var(--muted); font-size: .85rem; line-height: 1.45; flex: 1; }
.machine-card .mlinks { display: flex; gap: 8px; margin-top: 4px; }
.machine-card .mlinks a { flex: 1; text-align: center; border: 1px solid var(--border); border-radius: 7px;
  padding: 7px 10px; font-size: .78rem; font-weight: 600; }
.machine-card .mlinks a.sim { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.machine-card .mlinks a.sim:hover { text-decoration: none; opacity: .9; }
.machine-card .mlinks a.view:hover { text-decoration: none; border-color: var(--accent); color: var(--accent); }
.welcome footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--border);
  color: var(--muted); font-size: .82rem; display: flex; gap: 14px; flex-wrap: wrap; }

/* index + static pages */
.index-wrap { padding: 2rem; max-width: 80ch; margin: 0 auto; }
table { border-collapse: collapse; width: 100%; }
td, th { padding: .5rem .6rem; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; }
pre.diagram, pre.sidebar { background: var(--surface); color: var(--fg); padding: 1rem; border-radius: var(--radius);
  overflow: auto; font-family: ui-monospace, monospace; font-size: .82rem; line-height: 1.4; border: 1px solid var(--border); }

@media (max-width: 760px) {
  main.layout { flex-direction: column; }
  .canvas { border-right: none; border-bottom: 1px solid var(--border); min-height: 50vh; }
  .inspector { max-width: none; }
}