:root {
  --bg: #07080d;
  --card: rgba(22, 24, 35, 0.72);
  --card-solid: #12141d;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --fg: #eceef5;
  --dim: #8e93a8;
  --accent: #7c5cff;
  --accent-2: #22d3ee;
  --a: #a78bfa;
  --b: #2dd4bf;
  --green: #34d399;
  --red: #f87171;
  --amber: #fbbf24;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  --radius: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.6 Inter, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.bg-glow {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(124, 92, 255, 0.22), transparent 60%),
    radial-gradient(700px 450px at 95% 5%, rgba(34, 211, 238, 0.14), transparent 60%),
    radial-gradient(800px 600px at 50% 110%, rgba(124, 92, 255, 0.10), transparent 60%);
}

code, .code { font-family: var(--mono); font-size: 12.5px; color: #c4b5fd; }
.wrap { word-break: break-all; }
.hidden { display: none !important; }
.dim { color: var(--dim); font-weight: 400; font-size: 13px; }
.small { font-size: 12.5px; }

/* ---- top bar / hero ------------------------------------------------------ */

.topbar {
  max-width: 1080px; margin: 0 auto; padding: 22px 24px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; letter-spacing: -0.02em; }
.logo {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-weight: 800; box-shadow: 0 4px 18px rgba(124, 92, 255, 0.45);
}

.pill {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--border-strong); border-radius: 999px;
  padding: 5px 12px; font-size: 12.5px; color: var(--dim);
  background: rgba(255, 255, 255, 0.03); max-width: 60vw;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--dim); flex-shrink: 0; }
.pill-ok .dot { background: var(--green); box-shadow: 0 0 10px var(--green); }
.pill-off .dot { background: var(--red); }
.pill-wait .dot { background: var(--amber); animation: pulse 1.2s infinite; }

.hero { max-width: 1080px; margin: 0 auto; padding: 56px 24px 8px; }
.eyebrow {
  display: inline-block; font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent-2); margin-bottom: 14px; font-weight: 600;
}
.hero h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.08; letter-spacing: -0.035em; margin: 0 0 18px; }
.grad {
  background: linear-gradient(90deg, var(--a), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { color: var(--dim); font-size: 17px; max-width: 680px; margin: 0; }
.lede code { font-size: 14px; }

.stepper { list-style: none; display: flex; gap: 8px; padding: 0; margin: 32px 0 0; flex-wrap: wrap; }
.stepper li {
  display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--dim);
  padding: 7px 14px 7px 7px; border: 1px solid var(--border); border-radius: 999px;
  background: rgba(255, 255, 255, 0.02); transition: all 0.25s;
}
.stepper li span {
  width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(255, 255, 255, 0.06); font-weight: 600; font-size: 12px;
}
.stepper li.active { color: var(--fg); border-color: rgba(124, 92, 255, 0.6); }
.stepper li.active span { background: var(--accent); color: #fff; }
.stepper li.done { color: var(--fg); }
.stepper li.done span { background: var(--green); color: #052e1c; }

/* ---- cards --------------------------------------------------------------- */

main { max-width: 1080px; margin: 0 auto; padding: 16px 24px 40px; }

.card {
  background: var(--card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  margin-top: 22px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}
.card.private { border-color: rgba(251, 191, 36, 0.25); }

.card-head { display: flex; gap: 16px; align-items: flex-start; }
.card-head > div:nth-child(2) { flex: 1; }
.num {
  width: 34px; height: 34px; border-radius: 10px; flex-shrink: 0; display: grid; place-items: center;
  font-weight: 700; background: rgba(124, 92, 255, 0.15); color: var(--a); border: 1px solid rgba(124, 92, 255, 0.35);
}
h2 { font-size: 19px; margin: 3px 0 4px; letter-spacing: -0.01em; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
h3 { font-size: 14px; margin: 22px 0 8px; font-weight: 600; }
.hint { color: var(--dim); font-size: 14px; margin: 0; max-width: 720px; }

/* ---- controls ------------------------------------------------------------ */

/* Button system — one shape, three intents, two sizes:
   .btn (secondary) · .btn-primary (the next step) · .btn-danger (destructive / adversarial)
   .btn-sm for inline/utility actions. Links and file inputs can wear .btn too. */
.btn {
  --h: 38px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: var(--h); padding: 0 16px; border-radius: 10px;
  border: 1px solid var(--border-strong); background: rgba(255, 255, 255, 0.04); color: var(--fg);
  font: 600 14px/1 inherit; white-space: nowrap; text-decoration: none; cursor: pointer; user-select: none;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s, transform 0.08s;
}
.btn:hover:not(:disabled) { background: rgba(255, 255, 255, 0.09); border-color: rgba(255, 255, 255, 0.28); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.45); }
.btn-primary {
  border-color: transparent; color: #fff;
  background: linear-gradient(135deg, var(--accent), #5b8cff);
  box-shadow: 0 6px 22px rgba(124, 92, 255, 0.32);
}
.btn-primary:hover:not(:disabled) { background: linear-gradient(135deg, #8d71ff, #6c98ff); border-color: transparent; box-shadow: 0 8px 28px rgba(124, 92, 255, 0.5); }
.btn-danger { border-color: rgba(248, 113, 113, 0.4); color: #fca5a5; background: rgba(248, 113, 113, 0.08); }
.btn-danger:hover:not(:disabled) { background: rgba(248, 113, 113, 0.16); border-color: rgba(248, 113, 113, 0.6); }
.btn-sm { --h: 30px; padding: 0 12px; font-size: 12.5px; border-radius: 8px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; box-shadow: none; }
.btn.busy { position: relative; color: transparent !important; pointer-events: none; }
.btn.busy::after {
  content: ""; position: absolute; width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.35); border-top-color: #fff; animation: spin 0.8s linear infinite;
}
.filebtn { position: relative; overflow: hidden; }
.filebtn input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

input, textarea {
  background: rgba(0, 0, 0, 0.35); color: var(--fg); border: 1px solid var(--border-strong);
  border-radius: 10px; padding: 9px 12px; font: 13px var(--mono); width: 100%;
  transition: border-color 0.2s, box-shadow 0.2s;
}
input:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.25); }
textarea { min-height: 160px; margin-top: 14px; resize: vertical; }

.row { display: flex; gap: 10px; align-items: flex-end; margin-top: 10px; flex-wrap: wrap; }
.row input { flex: 1; min-width: 220px; }
.row.between { justify-content: space-between; align-items: center; }
.note {
  margin-top: 12px; padding: 10px 14px; border-radius: 10px; font-size: 13.5px; color: #fde68a;
  background: rgba(251, 191, 36, 0.08); border: 1px solid rgba(251, 191, 36, 0.3);
}

.tag {
  display: inline-block; border: 1px solid; border-radius: 6px; padding: 1px 8px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.05em;
}
.tag-amber { color: var(--amber); border-color: rgba(251, 191, 36, 0.4); background: rgba(251, 191, 36, 0.08); }
.tag-green { color: var(--green); border-color: rgba(52, 211, 153, 0.4); background: rgba(52, 211, 153, 0.08); }
.tag-violet { color: var(--a); border-color: rgba(167, 139, 250, 0.45); background: rgba(167, 139, 250, 0.1); }
.tag-red { color: var(--red); border-color: rgba(248, 113, 113, 0.4); background: rgba(248, 113, 113, 0.08); }

.error {
  margin-top: 12px; padding: 10px 14px; border-radius: 10px; font-size: 13.5px;
  color: #fecaca; background: rgba(248, 113, 113, 0.1); border: 1px solid rgba(248, 113, 113, 0.35);
}

/* ---- step 1 -------------------------------------------------------------- */

#walletOut { margin-top: 22px; animation: rise 0.35s ease-out; }

.secret-box {
  border: 1px dashed rgba(251, 191, 36, 0.35); border-radius: 12px; padding: 12px 16px 8px;
  background: rgba(251, 191, 36, 0.04);
}
.secret-tag { font-size: 12px; color: var(--amber); margin-bottom: 4px; }

.kv { display: flex; gap: 14px; margin: 6px 0; align-items: baseline; }
.kv .k { color: var(--dim); width: 90px; flex-shrink: 0; font-size: 12.5px; }

.paths { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 22px; }
.path-label { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.path-label small { color: var(--dim); font-weight: 400; font-size: 12.5px; }
.path-input { display: flex; align-items: center; position: relative; }
.path-input .m { position: absolute; left: 12px; font: 15px var(--mono); color: var(--dim); pointer-events: none; }
.path-input input { padding-left: 34px; font-size: 15px; }
.path-field.a input:focus { border-color: var(--a); box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.25); }
.path-field.b input:focus { border-color: var(--b); box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.25); }

.sw { width: 10px; height: 10px; border-radius: 3px; display: inline-block; flex-shrink: 0; }
.sw-a { background: var(--a); box-shadow: 0 0 8px var(--a); }
.sw-b { background: var(--b); box-shadow: 0 0 8px var(--b); }

.presets { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.chipbtn {
  height: 28px; padding: 0 12px; border-radius: 999px; cursor: pointer; transition: all 0.15s;
  border: 1px solid var(--border-strong); background: rgba(255, 255, 255, 0.03); color: var(--fg);
  font: 12.5px var(--mono);
}
.chipbtn:hover { border-color: var(--accent); background: rgba(124, 92, 255, 0.12); }
.chipbtn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.45); }
.chipbtn.active { border-color: var(--accent); background: rgba(124, 92, 255, 0.18); }

.tree-wrap {
  margin-top: 18px; border: 1px solid var(--border); border-radius: 12px;
  background: rgba(0, 0, 0, 0.25); overflow-x: auto; padding: 6px;
}
#tree { display: block; height: 170px; }
#tree .edge { fill: none; stroke: rgba(255, 255, 255, 0.18); stroke-width: 2; }
#tree .edge.a { stroke: var(--a); }
#tree .edge.b { stroke: var(--b); }
#tree .edge.shared { stroke: url(#sharedGrad); stroke-width: 2.5; }
#tree circle { stroke-width: 2; }
#tree .n-root circle { fill: rgba(251, 191, 36, 0.15); stroke: var(--amber); }
#tree .n-shared circle { fill: #1b1d2a; stroke: #c4b5fd; }
#tree .n-a circle { fill: #1b1d2a; stroke: var(--a); }
#tree .n-b circle { fill: #1b1d2a; stroke: var(--b); }
#tree .leaf.n-a circle { fill: var(--a); }
#tree .leaf.n-b circle { fill: var(--b); }
#tree .leaf.n-shared circle { fill: var(--a); stroke: var(--b); stroke-width: 3; }
#tree text { font: 12px var(--mono); fill: var(--fg); text-anchor: middle; dominant-baseline: central; }
#tree .leaf text.idx { fill: #0b0c12; font-weight: 700; }
#tree text.lbl { font: 600 11.5px Inter, sans-serif; }
#tree text.lbl.a { fill: var(--a); }
#tree text.lbl.b { fill: var(--b); }
#tree text.lbl.root { fill: var(--amber); }
#tree .n-root text.idx { fill: var(--amber); font-size: 11px; }

.childgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
.keycard {
  border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px;
  background: rgba(255, 255, 255, 0.02); min-width: 0;
}
.keycard.a { border-top: 2px solid var(--a); }
.keycard.b { border-top: 2px solid var(--b); }
.keycard-head { display: flex; align-items: center; gap: 8px; font-weight: 600; margin-bottom: 6px; }
.keycard .kv .k { width: 54px; }
.pathtag { margin-left: auto; padding: 1px 8px; border-radius: 6px; background: rgba(255, 255, 255, 0.06); color: var(--fg); }
.kv-details { margin-top: 6px; font-size: 12.5px; color: var(--dim); }
.kv-details summary { cursor: pointer; user-select: none; }
.kv-details code { display: block; margin-top: 4px; color: #fca5a5; }

.signbox { margin-top: 22px; border-top: 1px solid var(--border); padding-top: 18px; }
.signbox label { color: var(--dim); font-size: 13.5px; }

/* ---- step 2 -------------------------------------------------------------- */

.modes { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 20px; }
.mode {
  border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px;
  background: rgba(255, 255, 255, 0.02); display: flex; flex-direction: column;
}
.mode.featured { border-color: rgba(167, 139, 250, 0.5); background: linear-gradient(180deg, rgba(124, 92, 255, 0.13), transparent); box-shadow: 0 0 0 1px rgba(124, 92, 255, 0.15), 0 10px 30px rgba(124, 92, 255, 0.12); }
.mode p strong { color: var(--fg); }
.mode-head { display: flex; gap: 8px; flex-wrap: wrap; justify-content: space-between; align-items: center; }
.mode p { color: var(--dim); font-size: 13.5px; margin: 10px 0 14px; flex: 1; }
.mode .btn { align-self: stretch; }

.progress { margin-top: 18px; border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; background: rgba(0, 0, 0, 0.2); }
.progress-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; font-weight: 600; font-size: 14px; }
.progress-bar { height: 8px; border-radius: 999px; background: rgba(255, 255, 255, 0.06); overflow: hidden; }
#realBar {
  height: 100%; width: 0; border-radius: 999px; transition: width 0.4s linear;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent));
  background-size: 200% 100%; animation: shimmer 1.6s linear infinite;
}
.progress .dim { margin-top: 8px; display: block; }

pre.code {
  background: rgba(0, 0, 0, 0.4); border: 1px solid var(--border); border-radius: 10px;
  padding: 14px 16px; overflow-x: auto; margin: 0; white-space: pre-wrap; word-break: break-all;
  max-height: 360px; color: #ddd6fe;
}


/* ---- step 3 -------------------------------------------------------------- */

.ctx { flex: 1; min-width: 240px; display: flex; flex-direction: column; gap: 4px; }
.modebadge { font-size: 13px; color: var(--dim); padding: 0 6px 10px; }
.modebadge strong { color: var(--fg); }

.checklist { list-style: none; padding: 0; margin: 16px 0 0; }
.checklist li {
  padding: 11px 14px; border: 1px solid var(--border); border-radius: 10px; margin-top: 8px;
  background: rgba(255, 255, 255, 0.02); display: grid; grid-template-columns: 24px 1fr auto; gap: 4px 10px;
  animation: rise 0.3s ease-out both;
}
.checklist li .ico { grid-row: span 2; font-size: 16px; }
.checklist li .detail { grid-column: 2 / 4; color: var(--dim); font-size: 12.5px; }
.checklist li.ok { border-left: 3px solid var(--green); }
.checklist li.fail { border-left: 3px solid var(--red); background: rgba(248, 113, 113, 0.05); }

#verdict {
  margin-top: 18px; padding: 18px 22px; border-radius: 12px;
  font-size: 16px; font-weight: 600; text-align: center; animation: rise 0.35s ease-out;
}
#verdict.pass { background: rgba(52, 211, 153, 0.1); border: 1px solid rgba(52, 211, 153, 0.5); color: var(--green); box-shadow: 0 0 40px rgba(52, 211, 153, 0.12); }
#verdict.fail { background: rgba(248, 113, 113, 0.1); border: 1px solid rgba(248, 113, 113, 0.5); color: var(--red); }
#verdict.partial { background: rgba(251, 191, 36, 0.08); border: 1px solid rgba(251, 191, 36, 0.45); color: var(--amber); }

/* ---- explainer ----------------------------------------------------------- */

#explainer p { color: #c8cbd8; }
#explainer p code { word-break: break-word; }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 18px 0; }
.facts > div {
  border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; background: rgba(255, 255, 255, 0.02);
  display: flex; flex-direction: column; gap: 4px;
}
.facts span { color: var(--dim); font-size: 13.5px; }

footer { text-align: center; color: var(--dim); font-size: 13px; padding: 10px 24px 40px; }

/* ---- motion / responsive ------------------------------------------------- */

@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { opacity: 0.35; } }
@keyframes shimmer { to { background-position: -200% 0; } }

@media (max-width: 760px) {
  .paths, .childgrid, .modes, .facts { grid-template-columns: 1fr; }
  .card { padding: 20px 18px; }
  .card-head { flex-wrap: wrap; }
  .hero { padding-top: 36px; }
}

/* ---- signet anchor ------------------------------------------------------- */

a { color: var(--accent-2); }
.chain-title { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 0; }
.chainsteps { display: flex; flex-direction: column; gap: 12px; }
.cstep {
  display: flex; gap: 14px; border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 16px; background: rgba(255, 255, 255, 0.02);
}
.cstep-num {
  width: 26px; height: 26px; border-radius: 8px; flex-shrink: 0; display: grid; place-items: center;
  font-weight: 700; font-size: 13px; color: var(--b); background: rgba(45, 212, 191, 0.12); border: 1px solid rgba(45, 212, 191, 0.35);
}
.cstep-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 8px; }
.cstep-body label { display: flex; flex-direction: column; gap: 4px; }
.addrrow { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.addr {
  font-size: 14px; color: var(--b); background: rgba(0, 0, 0, 0.35); border: 1px solid var(--border-strong);
  border-radius: 8px; padding: 6px 10px; word-break: break-all; flex: 1; min-width: 240px;
}
.addr-sm { color: var(--a); word-break: break-all; }
.balance { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.balance > span:first-child { color: var(--dim); font-size: 13px; }
.balance strong { font-size: 20px; font-variant-numeric: tabular-nums; }
.balance .btn { margin-left: auto; }
#spendOut {
  border: 1px solid rgba(52, 211, 153, 0.4); background: rgba(52, 211, 153, 0.06);
  border-radius: 10px; padding: 10px 14px; font-size: 13.5px; word-break: break-all;
}
.restore { margin-top: 12px; color: var(--dim); font-size: 13.5px; }
.restore summary { cursor: pointer; user-select: none; }