:root {
  --bg: #0b0d14; --bg2: #11141f; --panel: #151927; --panel2: #1b2033; --line: #262c43; --text: #e8ebf5; --muted: #8b93b0;
  --accent: #7c6cff; --accent2: #22d3ee; --grad: linear-gradient(135deg, #7c6cff, #22d3ee);
  --ok: #34d399; --bad: #fb7185; --warn: #fbbf24; --info: #60a5fa; --shadow: 0 10px 40px rgba(0,0,0,.35);
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace; color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f5f6fb; --bg2: #fff; --panel: #fff; --panel2: #f1f3fa; --line: #e0e4f0; --text: #161a2b; --muted: #636b8a;
    --shadow: 0 10px 30px rgba(40,50,100,.10); color-scheme: light; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
button { font: inherit; cursor: pointer; color: inherit; }
code, pre { font-family: var(--mono); font-size: 12px; }
a { color: var(--accent2); }
.muted { color: var(--muted); } .small { font-size: 12px; }
:focus-visible { outline: 2px solid var(--accent2); outline-offset: 2px; }

.btn { border: 1px solid var(--line); background: var(--panel2); padding: 8px 14px; border-radius: 10px; font-weight: 500;
  transition: transform .12s, border-color .15s, background .15s; display: inline-flex; align-items: center; gap: 8px; text-decoration: none; color: var(--text); }
.btn:hover:not(:disabled) { border-color: var(--accent); transform: translateY(-1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--grad); border: 0; color: #fff; font-weight: 600; box-shadow: 0 6px 24px rgba(124,108,255,.35); }
.btn.lg { padding: 12px 20px; font-size: 15px; border-radius: 12px; }
.btn.ghost { background: transparent; }
.btn.sm { padding: 4px 10px; font-size: 12px; border-radius: 8px; }
input, select, textarea { font: inherit; background: var(--bg2); color: var(--text); border: 1px solid var(--line); border-radius: 10px; padding: 9px 11px; width: 100%; }
input:focus, select:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px rgba(124,108,255,.2); }

/* ---------- landing ---------- */
.landing { min-height: 100vh; position: relative; overflow: hidden; display: flex; flex-direction: column; }
.aurora { position: absolute; inset: -20%; z-index: 0; filter: blur(70px); opacity: .55; pointer-events: none;
  background: radial-gradient(40% 40% at 25% 30%, #7c6cff 0, transparent 70%), radial-gradient(35% 35% at 75% 25%, #22d3ee 0, transparent 70%),
  radial-gradient(40% 40% at 60% 80%, #f472b6 0, transparent 70%); animation: drift 18s ease-in-out infinite alternate; }
@keyframes drift { to { transform: translate3d(4%, -3%, 0) rotate(8deg) scale(1.08); } }
.grid-bg { position: absolute; inset: 0; z-index: 0; opacity: .18; pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 44px 44px; mask-image: radial-gradient(70% 60% at 50% 30%, #000, transparent); }
.land-nav { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: center; padding: 20px 32px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -.2px; font-size: 16px; }
.logo i { width: 28px; height: 28px; border-radius: 8px; background: var(--grad); display: grid; place-items: center; color: #fff; font-style: normal; font-size: 14px; }
.hero { position: relative; z-index: 1; max-width: 880px; margin: 4vh auto 0; padding: 0 24px; text-align: center; }
.pill { display: inline-flex; gap: 8px; align-items: center; padding: 5px 12px; border: 1px solid var(--line); border-radius: 99px; background: color-mix(in srgb, var(--panel) 70%, transparent); backdrop-filter: blur(8px); font-size: 12px; color: var(--muted); }
.pill b { color: var(--ok); }
h1 { font-size: clamp(34px, 6vw, 62px); line-height: 1.04; letter-spacing: -1.5px; margin: 18px 0 14px; }
h1 em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: clamp(15px, 2vw, 18px); color: var(--muted); max-width: 640px; margin: 0 auto 26px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn.oauth { background: var(--panel); min-width: 210px; justify-content: center; }
.btn.oauth svg { width: 18px; height: 18px; }
.cta-note { margin-top: 14px; color: var(--muted); font-size: 12px; }
.banner { max-width: 520px; margin: 0 auto 18px; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--bad); background: rgba(251,113,133,.12); color: var(--bad); }
.flow { position: relative; z-index: 1; max-width: 980px; margin: 54px auto 24px; padding: 0 24px; display: flex; gap: 0; align-items: stretch; justify-content: center; flex-wrap: wrap; }
.node { flex: 1; min-width: 118px; background: color-mix(in srgb, var(--panel) 85%, transparent); border: 1px solid var(--line); border-radius: 14px; padding: 14px 10px; text-align: center; backdrop-filter: blur(8px); animation: rise .6s both; }
.node b { display: block; font-size: 13px; } .node span { font-size: 11px; color: var(--muted); }
.node .ic { font-size: 22px; display: block; margin-bottom: 4px; }
.link { width: 26px; align-self: center; height: 2px; background: var(--line); position: relative; overflow: hidden; }
.link::after { content: ""; position: absolute; inset: 0; width: 40%; background: var(--grad); animation: pulse 1.8s linear infinite; }
@keyframes pulse { from { transform: translateX(-100%); } to { transform: translateX(260%); } }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } }
.feats { position: relative; z-index: 1; max-width: 980px; margin: 0 auto; padding: 0 24px 56px; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.feat { background: color-mix(in srgb, var(--panel) 85%, transparent); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.feat h3 { margin: 0 0 6px; font-size: 14px; } .feat p { margin: 0; color: var(--muted); font-size: 13px; }

/* ---------- app shell ---------- */
.topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 18px; padding: 10px 22px; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.meters { display: flex; gap: 10px; flex: 1; flex-wrap: wrap; justify-content: flex-end; }
.meter { min-width: 120px; padding: 5px 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
.meter .lbl { display: flex; justify-content: space-between; font-size: 10.5px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }
.meter .lbl b { color: var(--text); font-weight: 600; text-transform: none; letter-spacing: 0; }
.bar { height: 4px; border-radius: 4px; background: var(--line); overflow: hidden; margin-top: 4px; }
.bar > i { display: block; height: 100%; background: var(--grad); border-radius: 4px; transition: width .6s cubic-bezier(.2,.8,.2,1); }
.bar.warn > i { background: var(--warn); } .bar.bad > i { background: var(--bad); }
.engine { font-size: 11px; padding: 3px 9px; border-radius: 99px; border: 1px solid; white-space: nowrap; }
.engine.live { color: var(--ok); border-color: var(--ok); } .engine.mock { color: var(--warn); border-color: var(--warn); }
.avatar { width: 30px; height: 30px; border-radius: 50%; background: var(--grad); display: grid; place-items: center; font-weight: 700; font-size: 12px; color: #fff; overflow: hidden; border: 0; padding: 0; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.menu { position: relative; }
.menu-pop { position: absolute; right: 0; top: 38px; min-width: 220px; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 6px; display: none; }
.menu.open .menu-pop { display: block; }
.menu-pop button { width: 100%; text-align: left; background: none; border: 0; padding: 8px 10px; border-radius: 8px; }
.menu-pop button:hover { background: var(--panel2); }
.menu-pop .who { padding: 8px 10px; border-bottom: 1px solid var(--line); margin-bottom: 4px; }

.layout { display: grid; grid-template-columns: minmax(360px, 480px) 1fr; gap: 18px; padding: 18px 22px 60px; max-width: 1640px; margin: 0 auto; align-items: start; }
@media (max-width: 1050px) { .layout { grid-template-columns: 1fr; } .topbar { flex-wrap: wrap; } }
.builder { display: grid; gap: 12px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; }
.panel h2 { font-size: 13px; margin: 0 0 10px; display: flex; align-items: center; gap: 9px; text-transform: uppercase; letter-spacing: .6px; color: var(--muted); }
.step { width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; font-size: 11px; background: var(--panel2); color: var(--muted); border: 1px solid var(--line); transition: all .2s; }
.step.done { background: var(--grad); color: #fff; border-color: transparent; }
.tag { font-size: 10.5px; padding: 1px 7px; border-radius: 99px; border: 1px solid var(--line); color: var(--muted); text-transform: none; letter-spacing: 0; }
.cards { display: grid; gap: 8px; max-height: 330px; overflow: auto; padding: 2px; }
.cards.two { grid-template-columns: 1fr 1fr; max-height: none; }
.card { border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; background: var(--panel2); cursor: pointer; text-align: left; transition: border-color .15s, transform .12s, box-shadow .15s; width: 100%; }
.card:hover { border-color: var(--muted); transform: translateY(-1px); }
.card.sel { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset, 0 6px 22px rgba(124,108,255,.18); }
.card .t { font-weight: 600; font-size: 13px; } .card .meta { display: flex; gap: 8px; font-size: 11px; color: var(--muted); margin-top: 2px; }
.card ul { margin: 6px 0 0; padding-left: 16px; color: var(--muted); font-size: 12px; }
.card.locked { opacity: .5; cursor: not-allowed; } .card.locked:hover { transform: none; border-color: var(--line); }
.hgrp { display: grid; gap: 8px; }
.hgrp h3 { margin: 8px 0 0; font-size: 12px; color: var(--muted); font-weight: 600; }
.model { display: flex; gap: 10px; align-items: center; }
.model .chk { width: 18px; height: 18px; border-radius: 6px; border: 1.5px solid var(--line); display: grid; place-items: center; font-size: 11px; color: transparent; flex: none; }
.card.sel .chk { background: var(--grad); border-color: transparent; color: #fff; }
.model code { color: var(--muted); font-size: 10.5px; display: block; }
.row { display: grid; grid-template-columns: 110px 1fr; gap: 10px; margin: 12px 0; }
label.f { display: grid; gap: 4px; font-size: 11px; color: var(--muted); }
.gh { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 8px; }
.runbar { display: flex; gap: 12px; align-items: center; }
.runbar .hint { flex: 1; }

/* ---------- mission control ---------- */
.runs-strip { display: flex; gap: 8px; overflow: auto; padding-bottom: 4px; }
.chip { border: 1px solid var(--line); background: var(--panel); border-radius: 10px; padding: 6px 11px; display: flex; gap: 8px; align-items: center; white-space: nowrap; }
.chip.on { border-color: var(--accent); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.dot.passed, .dot.committed { background: var(--ok); } .dot.failed, .dot.error { background: var(--bad); }
.dot.run { background: var(--warn); animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: .25; } }
.empty { text-align: center; padding: 60px 20px; border: 1px dashed var(--line); border-radius: 16px; color: var(--muted); }
.empty .big { font-size: 38px; }
.story-head h2 { text-transform: none; letter-spacing: -.2px; font-size: 17px; color: var(--text); margin: 0 0 4px; }
.compare { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; margin: 12px 0 0; }
.stat { background: var(--panel2); border-radius: 10px; padding: 8px 10px; } .stat .v { font-size: 18px; font-weight: 700; letter-spacing: -.5px; } .stat .k { font-size: 10.5px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.variants { display: grid; grid-template-columns: repeat(auto-fit, minmax(440px, 1fr)); gap: 14px; margin-top: 14px; }
@media (max-width: 560px) { .variants { grid-template-columns: 1fr; } }
.variant { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; display: flex; flex-direction: column; min-width: 0; animation: rise .4s both; }
.variant.live { border-color: color-mix(in srgb, var(--accent) 60%, var(--line)); box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent), 0 8px 40px rgba(124,108,255,.12); }
.vhead { display: flex; align-items: center; gap: 10px; padding: 12px 14px; }
.vhead .gl { width: 32px; height: 32px; border-radius: 9px; background: var(--panel2); display: grid; place-items: center; border: 1px solid var(--line); }
.vhead b { display: block; } .vhead code { color: var(--muted); }
.status { margin-left: auto; font-size: 11px; font-weight: 600; padding: 3px 10px; border-radius: 99px; border: 1px solid var(--line); display: inline-flex; align-items: center; gap: 6px; }
.status.passed, .status.committed { color: var(--ok); border-color: var(--ok); background: rgba(52,211,153,.1); }
.status.failed, .status.error { color: var(--bad); border-color: var(--bad); background: rgba(251,113,133,.1); }
.status.run { color: var(--warn); border-color: var(--warn); }
.spin { width: 10px; height: 10px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: sp .7s linear infinite; }
@keyframes sp { to { transform: rotate(360deg); } }
.stepper { display: flex; padding: 0 14px 10px; gap: 4px; }
.stepper i { flex: 1; height: 3px; border-radius: 3px; background: var(--line); position: relative; overflow: hidden; }
.stepper i.on { background: var(--accent); } .stepper i.now::after { content: ""; position: absolute; inset: 0; background: var(--grad); animation: pulse 1.2s linear infinite; width: 50%; }
.stepper i.ok { background: var(--ok); }
.stepper-l { display: flex; justify-content: space-between; padding: 0 14px 8px; font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.tabs { display: flex; gap: 2px; padding: 0 10px; border-bottom: 1px solid var(--line); }
.tabs button { background: none; border: 0; padding: 8px 12px; color: var(--muted); border-bottom: 2px solid transparent; font-size: 12.5px; }
.tabs button.on { color: var(--text); border-color: var(--accent); }
.pane { height: 340px; overflow: auto; padding: 12px 14px; background: var(--bg2); }
.tl { display: grid; gap: 7px; }
.ev { display: grid; grid-template-columns: 18px 1fr auto; gap: 8px; font-size: 12.5px; animation: rise .25s both; }
.ev .i { text-align: center; } .ev time { color: var(--muted); font-size: 10.5px; font-family: var(--mono); }
.ev.llm .tx { color: var(--text); } .ev.info .tx, .ev.tool .tx { color: var(--muted); }
.ev.tool .tx code { color: var(--accent2); } .ev.error .tx { color: var(--bad); } .ev.result .tx { color: var(--ok); font-weight: 600; }
.ev.validate.ok .tx { color: var(--ok); } .ev.validate.no .tx { color: var(--bad); }
.gw { grid-column: 2 / 4; display: flex; gap: 6px; flex-wrap: wrap; font-size: 10.5px; font-family: var(--mono); color: var(--muted); }
.gw span { background: var(--panel2); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; }
.gw .ok { color: var(--ok); }
pre.code { margin: 0; white-space: pre; overflow: auto; } pre.out { margin: 0; white-space: pre-wrap; word-break: break-word; color: var(--muted); }
.diff .a { color: var(--ok); background: rgba(52,211,153,.08); display: block; } .diff .d { color: var(--bad); background: rgba(251,113,133,.08); display: block; }
.diff .h { color: var(--info); display: block; } .diff .f { color: var(--text); font-weight: 700; display: block; margin-top: 8px; }
.vfoot { display: flex; gap: 8px; align-items: center; padding: 10px 14px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.vfoot .note { font-size: 12px; color: var(--muted); flex: 1; }
.mini { display: flex; gap: 12px; font-size: 11.5px; color: var(--muted); padding: 0 14px 10px; font-family: var(--mono); }
.mini b { color: var(--text); }

/* ---------- modal + toasts ---------- */
.overlay { position: fixed; inset: 0; background: rgba(5,7,14,.65); backdrop-filter: blur(6px); z-index: 50; display: grid; place-items: center; padding: 16px; animation: fade .15s; }
@keyframes fade { from { opacity: 0; } }
.modal { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; width: min(680px, 100%); max-height: 90vh; overflow: auto; padding: 22px; box-shadow: var(--shadow); }
.modal h3 { margin: 0 0 4px; font-size: 18px; }
.snippet { position: relative; margin: 8px 0 14px; } .snippet pre { background: var(--bg2); border: 1px solid var(--line); border-radius: 10px; padding: 12px; overflow: auto; margin: 0; }
.snippet button { position: absolute; top: 8px; right: 8px; }
#toasts { position: fixed; bottom: 18px; right: 18px; display: grid; gap: 8px; z-index: 60; }
.toast { background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 10px; padding: 10px 14px; box-shadow: var(--shadow); max-width: 360px; animation: rise .25s both; }
.toast.err { border-left-color: var(--bad); } .toast.ok { border-left-color: var(--ok); }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }