:root {
  /* Palette — neutral greys with a single blue accent. Tweak freely. */
  --paper:      #f3f4f6;
  --card:       #ffffff;
  --ink:        #1c1f24;
  --ink-soft:   #5d626b;
  --line:       #e2e5ea;
  --accent:     #2563eb;   /* blue */
  --accent-ink: #ffffff;
  --accent-soft:#e7eefc;
  --danger:     #b3392b;
  --shadow:     0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06);
  --radius:     16px;
  --radius-sm:  10px;
  --mono:       ui-monospace, "SF Mono", "JetBrains Mono", "Menlo", monospace;
  --sans:       "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px 80px; }

/* Header */
header.top {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 80%, white);
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: saturate(1.2) blur(6px);
}
header.top .wrap { padding-top: 18px; padding-bottom: 18px; display: flex; align-items: baseline; gap: 12px; }
.brand { font-weight: 600; letter-spacing: -0.01em; font-size: 1.05rem; }
.brand .dot { color: var(--accent); }
.brand-sub { color: var(--ink-soft); font-size: .85rem; }

/* Stepper */
.stepper { display: flex; gap: 8px; margin: 28px 0 24px; flex-wrap: wrap; }
.step {
  display: flex; align-items: center; gap: 8px;
  font-size: .85rem; color: var(--ink-soft);
  padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--card);
}
.step .num {
  width: 20px; height: 20px; border-radius: 50%;
  display: grid; place-items: center; font-size: .72rem; font-weight: 600;
  background: var(--line); color: var(--ink-soft);
}
.step.active { color: var(--ink); border-color: var(--accent); }
.step.active .num { background: var(--accent); color: var(--accent-ink); }
.step.done .num { background: var(--accent-soft); color: var(--accent); }

/* Cards & layout */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 24px; margin-bottom: 20px;
}
h1 { font-size: 1.6rem; letter-spacing: -0.02em; margin: .2em 0 .1em; }
h2 { font-size: 1.05rem; margin: 0 0 4px; letter-spacing: -0.01em; }
.muted { color: var(--ink-soft); }
.hint { color: var(--ink-soft); font-size: .85rem; margin-top: 4px; }
.lead { color: var(--ink-soft); font-size: 1.05rem; }

/* Landing choice boxes */
.choices { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 28px; }
@media (max-width: 620px) { .choices { grid-template-columns: 1fr; } }
.choice {
  text-align: left; cursor: pointer; border: 1px solid var(--line);
  background: var(--card); border-radius: var(--radius); padding: 26px 24px;
  box-shadow: var(--shadow); transition: transform .12s ease, border-color .12s ease;
  font: inherit; color: inherit; position: relative;
}
.choice:hover { transform: translateY(-2px); border-color: var(--accent); }
.choice h2 { font-size: 1.2rem; }
.choice .icon { font-size: 1.4rem; margin-bottom: 10px; color: var(--accent); }
.choice .icon svg { width: 26px; height: 26px; display: block; }
.choice.disabled .icon { color: var(--ink-soft); }
.choice.disabled { cursor: not-allowed; opacity: .55; }
.choice.disabled:hover { transform: none; border-color: var(--line); }
.tag {
  position: absolute; top: 16px; right: 16px; font-size: .68rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .06em; color: var(--ink-soft);
  background: var(--paper); border: 1px solid var(--line); padding: 3px 8px; border-radius: 999px;
}

/* Buttons */
button, .btn {
  font: inherit; cursor: pointer; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  padding: 9px 16px; transition: background .12s, border-color .12s, opacity .12s;
}
button:hover { border-color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 88%, black); border-color: transparent; }
.btn-ghost { background: transparent; }
.btn-danger { color: var(--danger); border-color: transparent; padding: 4px 8px; }
.btn-danger:hover { border-color: var(--danger); }
button:disabled { opacity: .5; cursor: not-allowed; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.spread { justify-content: space-between; }
.actions { margin-top: 8px; display: flex; gap: 10px; justify-content: flex-end; }

/* Forms */
label { font-weight: 500; font-size: .9rem; }
input[type=text], input[type=number], textarea, select {
  font: inherit; width: 100%; padding: 9px 11px; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: var(--paper); color: var(--ink);
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
textarea { resize: vertical; }
textarea.tex { font-family: var(--mono); font-size: .88rem; line-height: 1.45; min-height: 96px; }
.field { margin-bottom: 16px; }
.field label { display: block; margin-bottom: 6px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 620px) { .grid2 { grid-template-columns: 1fr; } }

/* Collapsible question types */
details.qtype {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  margin-bottom: 12px; background: var(--paper); overflow: hidden;
}
details.qtype > summary {
  cursor: pointer; padding: 12px 14px; font-weight: 600; list-style: none;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
details.qtype > summary::-webkit-details-marker { display: none; }
details.qtype > summary .chev { transition: transform .15s; color: var(--ink-soft); }
details.qtype[open] > summary .chev { transform: rotate(90deg); }
.qtype-body { padding: 4px 14px 14px; }
.variant {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 12px; margin-bottom: 10px;
}
.variant .vhead { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.variant .vhead .vid { font-family: var(--mono); font-size: .8rem; color: var(--ink-soft); }
.pts { width: 90px !important; }

/* Options list (-q + bonus) */
.qtable { border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; }
.qtable .qrow {
  display: grid; grid-template-columns: 1fr auto auto; gap: 14px; align-items: center;
  padding: 10px 14px; border-bottom: 1px solid var(--line);
}
.qtable .qrow:last-child { border-bottom: none; }
.qtable .qrow .name { font-family: var(--mono); font-size: .9rem; }
.qtable .qhead { background: var(--paper); font-size: .78rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .05em; }
.checkline { display: inline-flex; align-items: center; gap: 7px; font-size: .9rem; }
.checkline input { width: auto; }
.qtable.disabled { opacity: .5; pointer-events: none; }

/* Assets */
.assetlist { list-style: none; padding: 0; margin: 10px 0 0; }
.assetlist li { display: flex; justify-content: space-between; align-items: center;
  padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 6px;
  background: var(--paper); font-family: var(--mono); font-size: .82rem; }

/* Toggle option blocks */
.opt { display: flex; gap: 12px; align-items: flex-start; padding: 12px 0; border-top: 1px solid var(--line); }
.opt:first-of-type { border-top: none; }
.opt input[type=checkbox] { width: 18px; height: 18px; margin-top: 2px; }
.opt .opt-text small { color: var(--ink-soft); display: block; margin-top: 2px; }

/* Status / spinner / errors */
.hidden { display: none !important; }
.status { display: flex; align-items: center; gap: 12px; margin-top: 14px; color: var(--ink-soft); }
.spinner {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid var(--line); border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.error {
  margin-top: 14px; border: 1px solid color-mix(in srgb, var(--danger) 40%, var(--line));
  background: color-mix(in srgb, var(--danger) 6%, var(--card));
  border-radius: var(--radius-sm); padding: 12px 14px; color: var(--danger);
}
.error pre { white-space: pre-wrap; font-size: .78rem; max-height: 220px; overflow: auto; margin: 8px 0 0; color: var(--ink); }