/* FDE Quest — Mission 01 · night-ops console with a parcel-tracking spine */

:root {
  --bg: #0D1420;
  --surface: #131C2B;
  --surface-2: #1A2537;
  --surface-3: #223049;
  --ink: #E8EDF5;
  --ink-2: #9FB0C7;
  --ink-3: #66788F;
  --line: rgba(158, 178, 208, 0.14);
  --amber: #F5B14C;        /* UI signal */
  --amber-deep: #C98120;   /* chart series 1 (validated) */
  --cyan: #2F9DB4;         /* chart series 2 (validated) */
  --violet: #8F6FE0;       /* chart series 3 (validated) */
  --green: #3FA470;        /* status good (validated) */
  --warn: #D9A13B;
  --crit: #D96A5E;
  --radius: 10px;
  --font-display: "Space Grotesk", "Avenir Next", sans-serif;
  --font-body: "Inter", "Helvetica Neue", sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
/* author display rules (e.g. .demo-chip{display:flex}) must not defeat the hidden attribute */
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  min-height: 100vh;
}
body::before { /* faint route-grid backdrop */
  content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .5;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(47,157,180,.09), transparent),
    repeating-linear-gradient(0deg, transparent 0 47px, rgba(158,178,208,.03) 47px 48px),
    repeating-linear-gradient(90deg, transparent 0 47px, rgba(158,178,208,.03) 47px 48px);
}

button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
button:focus-visible, [tabindex]:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; border-radius: 4px; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; }
.mono { font-family: var(--font-mono); }

/* ---------- header + waybill tracking rail (signature) ---------- */

header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(13, 20, 32, 0.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-top {
  max-width: 1060px; margin: 0 auto; padding: 14px 24px 10px;
  display: flex; align-items: baseline; gap: 14px;
}
.logo { font-family: var(--font-display); font-weight: 700; font-size: 17px; letter-spacing: .04em; }
.logo em { color: var(--amber); font-style: normal; }
.waybill-no { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); letter-spacing: .08em; }
.hud { margin-left: auto; display: flex; align-items: center; gap: 16px; }
.hud .xp { font-family: var(--font-mono); font-size: 13px; color: var(--amber); position: relative; }
.hud .attempt { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); }
.xp-pop {
  position: absolute; right: 0; top: -4px; font-size: 12px; color: var(--amber);
  animation: xpfloat 1s ease-out forwards; pointer-events: none;
}
@keyframes xpfloat { from { opacity: 1; transform: translateY(0); } to { opacity: 0; transform: translateY(-22px); } }

/* the tracking rail: mission progress rendered like a parcel scan timeline */
.rail { max-width: 1060px; margin: 0 auto; padding: 4px 24px 12px; display: flex; align-items: center; }
.stop { display: flex; align-items: center; flex: 1; min-width: 0; }
.stop:last-child { flex: 0; }
.stop .dot {
  width: 26px; height: 26px; border-radius: 50%; flex-shrink: 0;
  border: 2px solid var(--ink-3); display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 10px; color: var(--ink-3);
  transition: all .35s ease; background: var(--bg); position: relative;
}
.stop .lbl {
  font-family: var(--font-mono); font-size: 9.5px; letter-spacing: .1em; color: var(--ink-3);
  margin-left: 7px; white-space: nowrap; text-transform: uppercase; transition: color .3s;
}
.stop .route { flex: 1; height: 0; border-top: 2px dashed rgba(158,178,208,.22); margin: 0 10px; position: relative; }
.stop.done .dot { border-color: var(--green); color: var(--green); }
.stop.done .route { border-color: rgba(63,164,112,.55); }
.stop.now .dot { border-color: var(--amber); color: var(--bg); background: var(--amber); box-shadow: 0 0 0 4px rgba(245,177,76,.15); }
.stop.now .dot::after {
  content: ""; position: absolute; inset: -7px; border-radius: 50%;
  border: 1px solid rgba(245,177,76,.4); animation: ping 1.8s ease-out infinite;
}
@keyframes ping { 0% { transform: scale(.8); opacity: 1; } 100% { transform: scale(1.35); opacity: 0; } }
.stop.now .lbl { color: var(--amber); }
.stop.done .lbl { color: var(--ink-2); }

/* ---------- stage panels ---------- */

main { max-width: 1060px; margin: 0 auto; padding: 36px 24px 90px; }
.stage { display: none; }
.stage.active { display: block; animation: stagein .45s ease both; }
@keyframes stagein { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.eyebrow {
  display: inline-block; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--amber); border: 1px solid rgba(245,177,76,.35);
  padding: 4px 10px; border-radius: 3px; margin-bottom: 14px;
  background: rgba(245,177,76,.06);
}
.stage h1 { font-size: 34px; line-height: 1.15; margin-bottom: 10px; }
.stage h2 { font-size: 21px; margin-bottom: 8px; }
.lede { color: var(--ink-2); max-width: 62ch; margin-bottom: 22px; }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--amber); color: #17110a; font-weight: 600; font-family: var(--font-display);
  padding: 12px 22px; border-radius: 8px; font-size: 15px;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(245,177,76,.25); }
.btn.ghost { background: transparent; color: var(--ink-2); border: 1px solid var(--line); }
a.btn { text-decoration: none; }
.btn-logout { padding: 8px 14px; font-size: 13px; }
.btn.ghost:hover { color: var(--ink); box-shadow: none; }
.btn:disabled { opacity: .35; cursor: not-allowed; transform: none; box-shadow: none; }

/* ---------- stage 0: briefing ---------- */

.brief-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 22px; margin-top: 24px; }
.client-card { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 18px; }
.avatar {
  width: 46px; height: 46px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; color: #0b1018;
}
.client-meta .nm { font-weight: 600; }
.client-meta .rl { font-size: 12.5px; color: var(--ink-3); }
.quote {
  font-family: var(--font-display); font-size: 18px; line-height: 1.5; color: var(--ink);
  border-left: 3px solid var(--amber); padding-left: 16px; margin: 16px 0 6px;
}
.brief-lines p { color: var(--ink-2); margin-bottom: 10px; }
.metric-tiles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.tile { background: var(--surface-2); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; }
.tile .v { font-family: var(--font-mono); font-size: 26px; font-weight: 500; color: var(--ink); }
.tile .u { font-size: 14px; color: var(--ink-3); }
.tile .k { font-size: 11.5px; color: var(--ink-3); letter-spacing: .05em; text-transform: uppercase; margin-top: 3px; }
.tile.alert .v { color: var(--crit); }

/* ---------- stage 1: discovery ---------- */

.disc-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 22px; align-items: start; }
.qbudget { font-family: var(--font-mono); font-size: 12px; color: var(--ink-2); margin-bottom: 14px; }
.qbudget b { color: var(--amber); font-weight: 500; }
.qlist { display: flex; flex-direction: column; gap: 8px; }
.qcard {
  text-align: left; background: var(--surface); border: 1px solid var(--line); border-radius: 8px;
  padding: 12px 16px; font-size: 14px; color: var(--ink); width: 100%;
  transition: border-color .2s, background .2s, opacity .3s;
}
.qcard:hover:not(:disabled) { border-color: var(--amber); background: var(--surface-2); }
.qcard:disabled { opacity: .35; cursor: default; }
.qcard.asked { opacity: .45; border-style: dashed; cursor: default; }
.chat { display: flex; flex-direction: column; gap: 12px; min-height: 120px; }
.bubble { max-width: 92%; padding: 12px 15px; border-radius: 12px; font-size: 14px; animation: stagein .35s ease both; }
.bubble.you { align-self: flex-end; background: var(--surface-3); border-bottom-right-radius: 3px; }
.bubble.client { align-self: flex-start; background: var(--surface-2); border: 1px solid var(--line); border-bottom-left-radius: 3px; color: var(--ink-2); }
.bubble.client b { color: var(--ink); font-weight: 600; }
.bubble .who { font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); display: block; margin-bottom: 4px; }
.lesson-chip { font-size: 12.5px; color: var(--warn); margin-top: 6px; display: block; }

.fieldnotes { position: sticky; top: 120px; }
.fieldnotes h3 { font-size: 13px; font-family: var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 10px; }
.factcard {
  background: rgba(63,164,112,.07); border: 1px solid rgba(63,164,112,.35); border-radius: 8px;
  padding: 10px 13px; margin-bottom: 8px; animation: factin .4s ease both;
}
@keyframes factin { from { opacity: 0; transform: translateX(16px); } to { opacity: 1; transform: none; } }
.factcard .tag { font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--green); display: block; margin-bottom: 2px; }
.factcard .note { font-size: 13px; color: var(--ink-2); }
.factempty { font-size: 13px; color: var(--ink-3); font-style: italic; }

/* ---------- stages 2–3: choices ---------- */

.optgrid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 18px; }
.optcard {
  text-align: left; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; display: flex; flex-direction: column; gap: 9px; position: relative;
  transition: border-color .2s, transform .15s; cursor: pointer; user-select: none;
}
.optcard:hover:not(.locked) { border-color: var(--amber); transform: translateY(-2px); }
.optcard.chosen { border-color: var(--amber); box-shadow: 0 0 0 1px var(--amber); }
.optcard.locked { opacity: .45; pointer-events: none; }
.optcard .nm { font-family: var(--font-display); font-weight: 600; font-size: 16px; }
.optcard .sounds {
  position: absolute; top: 14px; right: 14px; font-family: var(--font-mono); font-size: 9.5px;
  letter-spacing: .08em; text-transform: uppercase; color: var(--violet);
  border: 1px solid rgba(143,111,224,.4); padding: 2px 7px; border-radius: 3px;
}
.optcard .desc { font-size: 13.5px; color: var(--ink-2); }
.mini-diagram { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.mini-diagram .node {
  font-family: var(--font-mono); font-size: 10.5px; color: var(--cyan);
  border: 1px solid rgba(47,157,180,.4); background: rgba(47,157,180,.08);
  padding: 3px 8px; border-radius: 4px;
}
.mini-diagram .arrow { color: var(--ink-3); font-size: 11px; }
.termrow { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.term {
  font-size: 11.5px; color: var(--amber); border-bottom: 1px dotted var(--amber);
  cursor: help; background: none; padding: 0; font-family: var(--font-mono);
}
.proscons { display: none; margin-top: 6px; border-top: 1px dashed var(--line); padding-top: 10px; font-size: 13px; }
.optcard.chosen .proscons { display: block; animation: stagein .3s ease both; }
.proscons .p { color: var(--green); margin-bottom: 3px; }
.proscons .c { color: var(--crit); margin-bottom: 3px; }

.blind-note {
  display: flex; gap: 10px; align-items: center; background: rgba(217,161,59,.08);
  border: 1px solid rgba(217,161,59,.35); border-radius: 8px; padding: 10px 14px;
  font-size: 13px; color: var(--warn); margin: 12px 0 4px;
}
.known-note {
  display: flex; gap: 10px; align-items: center; background: rgba(63,164,112,.06);
  border: 1px solid rgba(63,164,112,.3); border-radius: 8px; padding: 10px 14px;
  font-size: 13px; color: var(--ink-2); margin: 12px 0 4px;
}
.known-note b { color: var(--green); font-weight: 500; }

.decision-block { margin-bottom: 26px; }
.decision-block h3 { font-size: 16px; margin-bottom: 4px; }
.decision-block .dq { font-size: 13.5px; color: var(--ink-2); margin-bottom: 8px; }
.decision-block.pending-lock { opacity: .35; pointer-events: none; }
.optrow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.optrow .optcard { padding: 14px; }
.optrow .optcard .nm { font-size: 14px; }
.optrow .optcard .desc { font-size: 12.5px; }

/* glossary popover */
.gloss {
  position: fixed; z-index: 100; max-width: 320px; background: var(--surface-3);
  border: 1px solid var(--amber); border-radius: 8px; padding: 13px 15px;
  box-shadow: 0 12px 40px rgba(0,0,0,.5); animation: stagein .2s ease both;
}
.gloss .t { font-family: var(--font-display); font-weight: 600; color: var(--amber); font-size: 14px; margin-bottom: 4px; }
.gloss .d { font-size: 13px; color: var(--ink-2); }

/* ---------- stage 4: simulation ---------- */

.simwrap { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 18px; }
.simwrap .panel h3 { font-size: 13px; font-family: var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 12px; }
.pipeline { grid-column: 1 / -1; min-height: 120px; position: relative; overflow: hidden; }
.pipe-svg { width: 100%; height: 150px; display: block; }
.weeklab { font-family: var(--font-mono); font-size: 12px; color: var(--amber); letter-spacing: .1em; margin-bottom: 8px; min-height: 18px; }
.eventlog { display: flex; flex-direction: column; gap: 7px; max-height: 240px; overflow-y: auto; }
.eventlog .evt { display: flex; gap: 9px; font-size: 13px; animation: stagein .3s ease both; }
.evt .wk { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); flex-shrink: 0; padding-top: 1px; }
.evt.good .tx { color: var(--green); } .evt.warn .tx { color: var(--warn); }
.evt.bad .tx { color: var(--crit); } .evt.info .tx { color: var(--ink-2); }
.simcounters { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; grid-column: 1 / -1; }

/* charts */
.chart-figure { width: 100%; }
.chart-title { font-size: 13px; color: var(--ink-2); margin-bottom: 2px; }
.legend { display: flex; gap: 14px; margin: 6px 0 4px; font-size: 11.5px; color: var(--ink-2); }
.legend .sw { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.chart-svg { width: 100%; height: auto; display: block; }
.chart-svg text { font-family: var(--font-mono); font-size: 10px; fill: var(--ink-3); }
.chart-svg .grid { stroke: rgba(158,178,208,.1); }
.chart-svg .axis { stroke: rgba(158,178,208,.25); }
.chart-tip {
  position: fixed; z-index: 90; background: var(--surface-3); border: 1px solid var(--line);
  border-radius: 6px; padding: 8px 11px; font-size: 12px; pointer-events: none; display: none;
  box-shadow: 0 8px 24px rgba(0,0,0,.45);
}
.chart-tip .r { display: flex; gap: 8px; justify-content: space-between; }
.chart-tip .r b { font-family: var(--font-mono); font-weight: 500; }
details.datatable { margin-top: 8px; font-size: 12px; color: var(--ink-3); }
details.datatable table { width: 100%; border-collapse: collapse; margin-top: 6px; font-family: var(--font-mono); font-size: 11px; }
details.datatable td, details.datatable th { border: 1px solid var(--line); padding: 4px 8px; text-align: right; color: var(--ink-2); }

/* ---------- stage 5: results ---------- */

.score-hero { text-align: center; padding: 34px 20px 26px; }
.score-hero .flabel { font-family: var(--font-mono); font-size: 13px; color: var(--ink-3); letter-spacing: .05em; margin-bottom: 6px; }
.score-big {
  font-family: var(--font-mono); font-size: 84px; font-weight: 500; line-height: 1;
  color: var(--amber); letter-spacing: -0.03em;
}
.score-big .of { font-size: 26px; color: var(--ink-3); }
.score-sub { color: var(--ink-2); margin-top: 8px; }
.cap-note {
  display: inline-flex; gap: 8px; align-items: center; margin-top: 14px;
  background: rgba(217,106,94,.1); border: 1px solid rgba(217,106,94,.45); color: var(--crit);
  border-radius: 8px; padding: 9px 14px; font-size: 13px;
}
.bench-gauge { max-width: 560px; margin: 22px auto 0; }
.gauge-track { height: 10px; background: var(--surface-3); border-radius: 5px; position: relative; }
.gauge-fill { height: 100%; border-radius: 5px; background: linear-gradient(90deg, var(--amber-deep), var(--amber)); width: 0; transition: width 1.2s cubic-bezier(.2,.8,.2,1); }
.gauge-mark { position: absolute; top: -7px; width: 2px; height: 24px; background: var(--ink-3); }
.gauge-mark span {
  position: absolute; top: 26px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 10px; color: var(--ink-3); white-space: nowrap;
}

.results-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 40px; }
.contrib-row { display: grid; grid-template-columns: 150px 1fr 52px; gap: 10px; align-items: center; margin-bottom: 11px; font-size: 13px; }
.contrib-row .pn { color: var(--ink-2); }
.contrib-row .pn small { display: block; color: var(--ink-3); font-size: 11px; }
.contrib-bar { height: 18px; background: var(--surface-3); border-radius: 4px; overflow: hidden; position: relative; }
.contrib-bar .fill { height: 100%; border-radius: 4px 3px 3px 4px; width: 0; transition: width .9s cubic-bezier(.2,.8,.2,1); background: var(--cyan); }
.contrib-bar .maxmark { position: absolute; top: 0; height: 100%; width: 2px; background: rgba(232,237,245,.35); }
.contrib-row .pv { font-family: var(--font-mono); font-size: 12px; color: var(--ink-2); text-align: right; }
.formula {
  font-family: var(--font-mono); font-size: 13px; color: var(--ink-2); background: var(--surface-2);
  border: 1px solid var(--line); border-radius: 6px; padding: 10px 14px; margin-bottom: 16px; overflow-x: auto; white-space: nowrap;
}
.formula b { color: var(--amber); font-weight: 500; }

.outcome-tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 18px; }
.outcome-tiles .tile .delta { font-size: 12px; font-family: var(--font-mono); margin-top: 3px; }
.delta.up { color: var(--green); } .delta.down { color: var(--crit); }

.debrief-list { display: flex; flex-direction: column; gap: 12px; margin-top: 16px; }
.debrief-card { border-left: 3px solid var(--ink-3); background: var(--surface); border-radius: 0 8px 8px 0; padding: 14px 18px; }
.debrief-card.best { border-color: var(--green); }
.debrief-card.risky { border-color: var(--warn); }
.debrief-card.miss, .debrief-card.fail { border-color: var(--crit); }
.debrief-card .dh { display: flex; gap: 10px; align-items: baseline; margin-bottom: 4px; }
.debrief-card .verdict { font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.debrief-card.best .verdict { color: var(--green); } .debrief-card.risky .verdict { color: var(--warn); }
.debrief-card.miss .verdict, .debrief-card.fail .verdict { color: var(--crit); }
.debrief-card .dt { font-weight: 600; font-size: 14px; }
.debrief-card .dd { font-size: 13.5px; color: var(--ink-2); }

.badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.badge {
  display: flex; gap: 10px; align-items: center; background: var(--surface-2); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 14px; opacity: .3;
}
.badge.earned { opacity: 1; border-color: rgba(245,177,76,.5); animation: badgein .5s cubic-bezier(.2,.8,.2,1) both; }
@keyframes badgein { from { transform: scale(.7); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.badge .ic { font-size: 20px; color: var(--amber); }
.badge .bn { font-size: 13px; font-weight: 600; }
.badge .bc { font-size: 11px; color: var(--ink-3); }

.next-lock {
  margin-top: 26px; border: 1px dashed rgba(158,178,208,.3); border-radius: var(--radius);
  padding: 20px 22px; display: flex; align-items: center; gap: 16px; color: var(--ink-3);
}
.next-lock .lockic { font-size: 22px; }
.next-lock .nm { color: var(--ink-2); font-weight: 600; }

.stage-actions { margin-top: 30px; display: flex; gap: 12px; align-items: center; }
.delivered-stamp {
  display: inline-block; font-family: var(--font-mono); letter-spacing: .2em; font-size: 12px;
  color: var(--green); border: 2px solid var(--green); border-radius: 4px; padding: 5px 12px;
  transform: rotate(-4deg); text-transform: uppercase; opacity: .9; margin-bottom: 14px;
}

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

@media (max-width: 860px) {
  .brief-grid, .disc-grid, .simwrap, .results-grid { grid-template-columns: 1fr; }
  .optgrid, .optrow { grid-template-columns: 1fr; }
  .outcome-tiles, .simcounters { grid-template-columns: repeat(2, 1fr); }
  .stop .lbl { display: none; }
  .stage h1 { font-size: 26px; }
  .fieldnotes { position: static; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001s !important; transition-duration: .001s !important; }
}

/* ---------- v2 additions: field exam + teaser variants ---------- */

.next-lock.unlocked { border-style: solid; border-color: rgba(63,164,112,.4); color: var(--ink-2); }
.next-lock .btn { padding: 9px 16px; font-size: 13.5px; }

.exam-dots { display: flex; gap: 8px; margin: 4px 0 16px; }
.edot {
  width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--ink-3);
  transition: all .25s ease; background: var(--bg);
}
.edot.now { border-color: var(--amber); box-shadow: 0 0 0 4px rgba(245,177,76,.15); }
.edot.right { background: var(--green); border-color: var(--green); }
.edot.wrong { background: var(--crit); border-color: var(--crit); }

.exam-meta { font-size: 11px; letter-spacing: .12em; color: var(--ink-3); margin-bottom: 10px; }
.exam-q { font-family: var(--font-display); font-size: 19px; line-height: 1.45; margin-bottom: 16px; max-width: 70ch; }
.exam-opts { display: flex; flex-direction: column; gap: 8px; max-width: 720px; }
.exam-opt {
  text-align: left; background: var(--surface-2); border: 1px solid var(--line); border-radius: 8px;
  padding: 12px 15px; font-size: 14px; color: var(--ink); display: flex; gap: 10px; align-items: baseline;
  transition: border-color .2s, background .2s, opacity .2s;
}
.exam-opt:hover:not(:disabled) { border-color: var(--amber); background: var(--surface-3); }
.exam-opt:disabled { cursor: default; opacity: .75; }
.exam-opt .letter { color: var(--ink-3); font-size: 11px; flex-shrink: 0; }
.exam-opt.is-answer { border-color: var(--green); box-shadow: 0 0 0 1px var(--green); opacity: 1; }
.exam-opt.is-answer .letter { color: var(--green); }
.exam-opt.is-wrong { border-color: var(--crit); box-shadow: 0 0 0 1px var(--crit); opacity: 1; }
.exam-opt.is-wrong .letter { color: var(--crit); }

.exam-verdict { font-family: var(--font-display); font-weight: 600; font-size: 16px; margin: 16px 0 6px; }
.exam-verdict.ok { color: var(--green); }
.exam-verdict.no { color: var(--crit); }
.exam-explain {
  background: rgba(245,177,76,.06); border: 1px solid rgba(245,177,76,.3); border-radius: 8px;
  padding: 12px 16px; font-size: 14px; color: var(--ink-2); max-width: 720px; margin-bottom: 14px;
  animation: stagein .3s ease both;
}
.exam-summary { text-align: center; padding: 22px 10px; }
.exam-concepts { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 16px 0 6px; }
.concept-chip {
  font-family: var(--font-mono); font-size: 11.5px; padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--ink-2);
}
.concept-chip.full { border-color: rgba(63,164,112,.5); color: var(--green); }
.concept-chip.part { border-color: rgba(217,161,59,.5); color: var(--warn); }
.concept-chip.none { border-color: rgba(217,106,94,.5); color: var(--crit); }

/* ---------- v2.1: assistant response feed ---------- */
.respfeed { display: flex; flex-direction: column; gap: 6px; min-height: 150px; max-height: 210px; overflow: hidden; }
.feedempty { font-size: 13px; color: var(--ink-3); font-style: italic; }
.feedrow {
  font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-2);
  background: var(--surface-2); border: 1px solid var(--line); border-radius: 6px;
  padding: 6px 10px; animation: feedin .35s ease both;
}
.feedrow .fa { color: var(--green); font-weight: 500; }
.feedrow .fd { color: var(--amber); font-weight: 500; }
.feedrow .fh { color: var(--violet); font-weight: 500; }
@keyframes feedin { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

/* ---------- v3: post-free-mission unlock band ---------- */
.unlock-band {
  margin-top: 18px; display: grid; grid-template-columns: 1.2fr 1fr; gap: 22px;
  border-color: rgba(245, 177, 76, .55);
  box-shadow: 0 0 0 1px rgba(245, 177, 76, .3), 0 14px 40px rgba(0, 0, 0, .35);
}
.unlock-band .ub-head h2 { margin: 6px 0 8px; }
.unlock-band .ub-head p { font-size: 13.5px; color: var(--ink-2); max-width: 52ch; }
.ub-pitch { border-left: 1px dashed var(--line); padding-left: 22px; display: flex; flex-direction: column; gap: 10px; }
.ub-price { font-size: 30px; color: var(--amber); }
.ub-price span { font-size: 12px; color: var(--ink-3); }
.ub-list { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.ub-list li { font-size: 13px; color: var(--ink-2); padding-left: 20px; position: relative; }
.ub-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-family: var(--font-mono); font-size: 12px; }
.ub-cta { text-align: center; margin-top: 4px; animation: ubpulse 2.2s ease-in-out infinite; }
@keyframes ubpulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(245, 177, 76, .35); } 50% { box-shadow: 0 0 0 7px rgba(245, 177, 76, 0); } }
@media (prefers-reduced-motion: reduce) { .ub-cta { animation: none; } }
@media (max-width: 720px) {
  .unlock-band { grid-template-columns: 1fr; }
  .ub-pitch { border-left: none; padding-left: 0; border-top: 1px dashed var(--line); padding-top: 16px; }
}

/* v3: two-line live-traffic rows */
.respfeed { max-height: 260px; min-height: 190px; }
.feedrow .fq { display: block; color: var(--ink); font-size: 11.5px; margin-bottom: 2px; }
.feedrow .fr { display: block; color: var(--ink-2); }

/* ============================================================= */
/* v4 — chapters, career strip, glyphs, polish, mobile (shared)  */
/* ============================================================= */

/* chapter headers (dashboard mission board + landing curriculum) */
.chapter-h {
  grid-column: 1 / -1;
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
  margin: 26px 0 4px; padding: 10px 14px;
  border-left: 3px solid var(--ch, var(--amber));
  background: linear-gradient(90deg, rgba(255,255,255,.03), transparent 70%);
  border-radius: 0 8px 8px 0;
}
.chapter-h:first-child { margin-top: 0; }
.chapter-h .ch-no { font-size: 10.5px; letter-spacing: .2em; color: var(--ch, var(--amber)); }
.chapter-h .ch-name { font-family: var(--font-display); font-weight: 700; font-size: 17px; color: var(--ink); }
.chapter-h .ch-tag { font-size: 12.5px; color: var(--ink-3); }
.chapter-h .ch-prog { margin-left: auto; font-size: 10.5px; color: var(--ink-3); letter-spacing: .1em; }
.chapter-h.locked .ch-name { color: var(--ink-2); }

/* industry glyphs */
.ind-glyph { display: block; color: var(--ch, var(--amber)); opacity: .9; }

/* career strip on the score page */
.career-strip { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 18px; margin-top: 18px; }
.career-strip .cs-cell { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.career-strip .cs-k { font-size: 10px; letter-spacing: .18em; color: var(--ink-3); }
.career-strip .cs-v { font-family: var(--font-display); font-weight: 700; font-size: 18px; color: var(--ink); }
.career-strip .cs-v small { font-size: 12px; color: var(--ink-3); font-weight: 400; }
.career-strip .cs-sub { font-size: 12px; color: var(--ink-3); }
.career-strip .cs-bar { position: relative; height: 6px; border-radius: 3px; background: var(--surface-3); overflow: hidden; }
.career-strip .cs-bar i { position: absolute; inset: 0 auto 0 0; border-radius: 3px; background: var(--amber);
  transition: width .8s cubic-bezier(.22,1,.36,1); }
.career-strip .good .cs-v { color: var(--green); }
.career-strip .warn .cs-v { color: var(--warn); }

/* gentle life on panels + primary CTAs */
.panel { transition: border-color .25s; }
.panel:hover { border-color: rgba(255,255,255,.14); }
.btn { position: relative; overflow: hidden; }
.btn:not(.ghost)::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 40%; left: -60%;
  background: linear-gradient(105deg, transparent, rgba(255,255,255,.35), transparent);
  transform: skewX(-20deg); transition: left .5s ease;
}
.btn:not(.ghost):hover::after { left: 120%; }

/* ---------------- mobile: mission player + shared ---------------- */
@media (max-width: 720px) {
  .header-top { flex-wrap: wrap; gap: 10px; padding: 12px 14px; }
  .hud { flex-wrap: wrap; gap: 8px; }
  .gamify-hud { gap: 8px; }
  .gamify-hud .g-bar { width: 90px; }
  .gamify-hud .g-xp { display: none; }           /* focus: rank + bar only */
  main { padding-left: 14px; padding-right: 14px; }
  .stage { padding: 4px 0 40px; }
  .panel { padding: 16px 14px; }
  .score-big { font-size: 56px; }
  .career-strip { grid-template-columns: 1fr 1fr; gap: 14px; }
  .outcome-tiles { grid-template-columns: 1fr 1fr !important; gap: 10px; }
  .exam-opt { padding: 12px 12px; font-size: 14.5px; }
  .stage-actions { flex-direction: column; align-items: stretch; gap: 10px; }
  .stage-actions .btn { width: 100%; text-align: center; }
  .badge-row { grid-template-columns: 1fr !important; }
  .chapter-h .ch-tag { flex-basis: 100%; }
  .chapter-h .ch-prog { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .btn:not(.ghost)::after { display: none; }
  .career-strip .cs-bar i { transition: none; }
}