/* ==========================================================================
   QUIZZITCH — styles.css
   CelesteCon 2026 mission-control workstation theme.
   Built for integrated graphics: no backdrop-filter, no large blurs, no
   continuous animations beyond two small LED pulses.
   Sections: 01 tokens · 02 base · 03 controls · 04 stage shells ·
   05 sign-in · 06 calibration · 07 protocol · 08 workspace · 09 palette ·
   10 receipt · 11 modals & toasts · 12 responsive · 13 print
   ========================================================================== */

/* --- 01 · TOKENS ---------------------------------------------------------- */
:root {
  --obsidian: #07090D;
  --slate: #0D1118;
  --slate-2: #121824;
  --slate-3: #182030;
  --line: #1F2837;
  --line-2: #2A3547;
  --ink: #E6EBF2;
  --ink-2: #AEB8C7;
  --ink-3: #7C889A;

  --green: #39D98A;
  --amber: #F5A623;
  --cyan: #22C3E6;
  --crimson: #F0484E;
  --green-dim: rgba(57, 217, 138, 0.12);
  --amber-dim: rgba(245, 166, 35, 0.12);
  --cyan-dim: rgba(34, 195, 230, 0.12);
  --crimson-dim: rgba(240, 72, 78, 0.12);

  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'Cascadia Mono', Consolas, monospace;

  --r-sm: 6px;
  --r: 10px;
  --r-lg: 14px;
  --gap: 16px;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  color-scheme: dark;
}

/* --- 02 · BASE ------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--obsidian);
  color: var(--ink);
  font: 400 15px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body[data-stage="exam"] { user-select: none; -webkit-user-select: none; }
input, textarea, select { user-select: text; -webkit-user-select: text; }

h1, h2, h3 { margin: 0; line-height: 1.2; font-weight: 700; letter-spacing: -0.01em; }
p { margin: 0; }
b, strong { font-weight: 600; }
code, kbd, .mono { font-family: var(--mono); }
kbd {
  display: inline-block;
  min-width: 1.7em;
  padding: 1px 6px;
  border: 1px solid var(--line-2);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--slate-2);
  font-size: 0.82em;
  text-align: center;
  color: var(--ink);
}
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.muted { color: var(--ink-3); }
.note { color: var(--ink-3); font-size: 13px; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.is-ok { color: var(--green); }
.is-bad { color: var(--crimson); }
.noscript { padding: 24px; text-align: center; }

/* --- 03 · CONTROLS -------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 8px 16px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  background: var(--slate-2);
  color: var(--ink);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: background-color .12s, border-color .12s, color .12s;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover:not(:disabled) { border-color: var(--ink-3); background: var(--slate-3); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn--primary { background: var(--cyan); border-color: var(--cyan); color: #04141A; }
.btn--primary:hover:not(:disabled) { background: #4fd3ef; border-color: #4fd3ef; }
.btn--accent { background: var(--green); border-color: var(--green); color: #04150D; }
.btn--accent:hover:not(:disabled) { background: #5de6a1; border-color: #5de6a1; }
.btn--ghost { background: transparent; }
.btn--submit, .btn--danger { background: var(--crimson); border-color: var(--crimson); color: #fff; }
.btn--submit:hover:not(:disabled), .btn--danger:hover:not(:disabled) { background: #f4686d; border-color: #f4686d; }
.btn--block { display: flex; width: 100%; }
.btn--lg { min-height: 48px; font-size: 15px; padding: 10px 22px; }
.btn--sm { min-height: 32px; padding: 4px 12px; font-size: 13px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }

.btn--mark { background: transparent; }
.btn--mark .bookmark {
  width: 10px; height: 13px;
  background: var(--ink-3);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 72%, 0 100%);
}
.btn--mark.is-on { border-color: var(--amber); color: var(--amber); background: var(--amber-dim); }
.btn--mark.is-on .bookmark { background: var(--amber); }

.field { display: grid; gap: 6px; margin-bottom: 16px; }
.field label { font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.field input {
  width: 100%;
  min-height: 46px;
  padding: 10px 14px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  background: var(--obsidian);
  color: var(--ink);
  font: 500 16px var(--mono);
  letter-spacing: .02em;
}
.field input#in-name { font-family: var(--font); }
.field input::placeholder { color: #465265; }
.field input:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px var(--cyan-dim); }
.field input.is-invalid { border-color: var(--crimson); }
.field input.is-valid { border-color: rgba(57, 217, 138, .55); }
.field__hint { font-size: 12.5px; color: var(--ink-3); }
.field__hint.is-bad { color: var(--crimson); }

.form-error {
  padding: 10px 12px;
  margin: 4px 0 14px;
  border: 1px solid rgba(240, 72, 78, .4);
  border-radius: var(--r-sm);
  background: var(--crimson-dim);
  color: #ffc9cb;
  font-size: 13.5px;
}

.check { display: flex; gap: 12px; align-items: flex-start; cursor: pointer; }
.check input { width: 20px; height: 20px; margin-top: 2px; flex: none; accent-color: var(--cyan); }
.check--danger input { accent-color: var(--crimson); }
.check--consent { font-size: 11.5px; color: var(--ink-3); line-height: 1.4; padding: 6px 0; }
.check--consent b { color: var(--amber); display: block; margin-bottom: 2px; font-size: 11px; }

.led {
  display: inline-block;
  flex: none;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--line-2);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .08);
}
[data-state="pass"] > .led, .led[data-state="pass"], [data-state="secure"] > .led { background: var(--green); box-shadow: 0 0 8px rgba(57, 217, 138, .6); }
[data-state="busy"] > .led, .led[data-state="busy"], [data-state="warning"] > .led { background: var(--amber); box-shadow: 0 0 8px rgba(245, 166, 35, .5); animation: pulse 1.4s ease-in-out infinite; }
[data-state="fail"] > .led, .led[data-state="fail"], [data-state="flagged"] > .led { background: var(--crimson); box-shadow: 0 0 8px rgba(240, 72, 78, .6); }
@keyframes pulse { 50% { opacity: .45; } }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-2);
  white-space: nowrap;
}
.badge--value { border-color: rgba(34, 195, 230, .45); color: var(--cyan); font-family: var(--mono); }

.card {
  background: var(--slate);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 20px;
}
.card--danger { border-color: rgba(240, 72, 78, .45); }
.card__title { font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-2); margin: 4px 0 14px; }
.card__title:not(:first-child) { margin-top: 22px; }

.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.table thead th { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; }
.table tbody th { font-weight: 600; }
.table--scheme td.num { font-family: var(--mono); font-weight: 700; }
.table--keys th { white-space: nowrap; width: 1%; padding-right: 18px; }

.kv { display: grid; gap: 10px; margin: 16px 0; }
.kv div { display: flex; justify-content: space-between; gap: 16px; border-bottom: 1px dashed var(--line); padding-bottom: 8px; }
.kv dt { color: var(--ink-3); font-size: 13px; }
.kv dd { margin: 0; font-weight: 600; text-align: right; overflow-wrap: anywhere; }
.kv--grid { grid-template-columns: 1fr 1fr; column-gap: 24px; }
.kv--span { grid-column: 1 / -1; }

/* --- 04 · STAGE SHELLS ---------------------------------------------------- */
.boot {
  min-height: 100vh;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 14px;
  text-align: center;
  padding: 24px;
}
.boot__spinner {
  width: 34px; height: 34px;
  border: 3px solid var(--line-2);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin .9s linear infinite;
}
.boot__title { font-family: var(--mono); color: var(--ink-2); letter-spacing: .04em; }
.boot__detail { max-width: 520px; color: var(--ink-3); font-size: 14px; }
@keyframes spin { to { transform: rotate(360deg); } }

.brand { display: flex; align-items: center; gap: 10px; }
.brand__mark {
  width: 22px; height: 22px; flex: none;
  border-radius: 50%;
  border: 2px dashed var(--cyan);
  background: radial-gradient(circle, var(--green) 0 3px, transparent 4px);
}
.brand__name { font-family: var(--mono); font-weight: 700; letter-spacing: .14em; }
.brand__sub { color: var(--ink-3); font-size: 13px; }

.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 12px 24px;
  background: var(--obsidian);
  border-bottom: 1px solid var(--line);
}
.stepper { display: flex; gap: 6px; list-style: none; margin: 0; padding: 0; counter-reset: s; }
.stepper li {
  display: flex; align-items: center; gap: 7px;
  padding: 5px 12px 5px 6px;
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--ink-3);
  border: 1px solid transparent;
}
.stepper li span {
  display: grid; place-items: center;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--slate-3);
  font: 700 11px var(--mono);
}
.stepper li.is-done { color: var(--ink-2); }
.stepper li.is-done span { background: var(--green); color: #04150D; }
.stepper li.is-current { color: var(--ink); border-color: var(--line-2); background: var(--slate); }
.stepper li.is-current span { background: var(--cyan); color: #04141A; }

.stage { min-height: 100vh; }
body[data-stage="calibrate"] .stage, body[data-stage="protocol"] .stage, body[data-stage="sealed"] .stage { min-height: calc(100vh - 60px); }
.stage--center { display: grid; place-items: center; padding: 24px 16px; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 32px 24px 56px; }
.wrap--narrow { max-width: 760px; }
.stage__title { font-size: 26px; margin-bottom: 6px; }
.stage__lede { color: var(--ink-2); margin-bottom: 24px; max-width: 760px; }

/* --- 05 · STAGE 1 · SIGN-IN ----------------------------------------------- */
.terminal {
  width: min(440px, 100%);
  background: var(--slate);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 26px 26px 18px;
  box-shadow: var(--shadow);
}
.terminal__head { display: flex; align-items: center; gap: 12px; padding-bottom: 18px; border-bottom: 1px solid var(--line); margin-bottom: 22px; }
.terminal__id { display: grid; line-height: 1.25; }
.terminal__id strong { font-family: var(--mono); letter-spacing: .14em; }
.terminal__id small { color: var(--ink-3); font-size: 12px; }
.terminal__net { margin-left: auto; font: 600 10.5px var(--mono); letter-spacing: .1em; color: var(--green); }
.terminal__net.is-bad { color: var(--crimson); }
.terminal__title { font-size: 20px; margin-bottom: 20px; }
.terminal__foot {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  margin-top: 18px; padding-top: 14px;
  border-top: 1px solid var(--line);
  font: 11.5px var(--mono); color: var(--ink-3);
}
.terminal__foot b { color: var(--ink-2); font-weight: 500; }
.terminal--resume .btn + .btn { margin-top: 10px; }

/* --- 06 · STAGE 2 · CALIBRATION ------------------------------------------- */
.calib { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: var(--gap); align-items: start; }
.calib__view { display: grid; gap: 14px; }

.viewport {
  position: relative;
  aspect-ratio: 4 / 3;
  background: #000;
  border-radius: var(--r);
  overflow: hidden;
  border: 1px solid var(--line);
}
.viewport video, .selfview video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
}
.reticle { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.reticle__dim { fill: rgba(7, 9, 13, .55); }
.reticle__oval { fill: none; stroke: var(--amber); stroke-width: 2; stroke-dasharray: 6 5; }
.reticle__tick { stroke: var(--amber); stroke-width: 2; }
.reticle[data-state="lock"] .reticle__oval { stroke: var(--green); stroke-dasharray: none; }
.reticle[data-state="lock"] .reticle__tick { stroke: var(--green); }
.reticle[data-state="bad"] .reticle__oval, .reticle[data-state="bad"] .reticle__tick { stroke: var(--crimson); }
.viewport__placeholder {
  position: absolute; inset: 0;
  display: grid; place-content: center; gap: 6px;
  text-align: center; padding: 20px;
  color: var(--ink-3);
}
.viewport__placeholder b { color: var(--ink-2); font-family: var(--mono); letter-spacing: .08em; }
.viewport__tag {
  position: absolute; left: 12px; bottom: 12px;
  padding: 4px 10px;
  border-radius: 4px;
  background: rgba(7, 9, 13, .82);
  font: 700 11px var(--mono);
  letter-spacing: .12em;
  color: var(--amber);
}
.viewport__tag[data-state="lock"] { color: var(--green); }

.checklist { list-style: none; margin: 0 0 12px; padding: 0; display: grid; gap: 4px; }
.checklist li {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 10px 12px;
  border-radius: var(--r-sm);
  background: var(--slate-2);
  font-weight: 500;
}
.checklist li .led { margin-top: 6px; }
.checklist li span { display: grid; }
.checklist small { font: 12px var(--mono); color: var(--ink-3); font-weight: 400; }
.checklist li[data-state="fail"] small { color: #ff9ea2; }

.baseline {
  margin: 14px 0;
  aspect-ratio: 4 / 3;
  max-width: 240px;
  border-radius: var(--r-sm);
  border: 1px dashed var(--line-2);
  display: grid; place-items: center;
  overflow: hidden;
  background: var(--obsidian);
}
.baseline img { width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); }
.baseline figcaption { color: var(--ink-3); font-size: 12.5px; padding: 12px; text-align: center; }
.calib__side .note { margin-bottom: 14px; }

/* --- 07 · STAGE 3 · PROTOCOL ---------------------------------------------- */
.protocol { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap); align-items: start; }
.rules { margin: 0; padding-left: 20px; display: grid; gap: 10px; color: var(--ink-2); font-size: 14px; }
.rules b { color: var(--ink); }
.modules-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; font-size: 14px; color: var(--ink-2); }
.modules-list b { color: var(--cyan); font-family: var(--mono); font-weight: 600; }

.legend { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px; font-size: 12.5px; color: var(--ink-2); }
.legend li { display: flex; align-items: center; gap: 8px; }
.legend .pcell { width: 22px; height: 22px; font-size: 0; pointer-events: none; }
.legend--wide { grid-template-columns: 1fr; margin-bottom: 12px; font-size: 14px; }
.legend--wide .pcell { width: 38px; height: 34px; font-size: 12px; }

.confirm { margin-top: var(--gap); display: grid; gap: 18px; }
.confirm__row { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.release { display: flex; align-items: center; gap: 10px; color: var(--ink-2); font-size: 14px; }

/* --- 08 · STAGE 4 · WORKSPACE --------------------------------------------- */
.exam { display: grid; grid-template-rows: auto auto 1fr; height: 100vh; overflow: hidden; background: var(--obsidian); }

.ribbon {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 20px;
  padding: 8px 20px;
  background: var(--slate);
  border-bottom: 1px solid var(--line);
}
.ribbon__brand { display: flex; align-items: center; gap: 10px; font-family: var(--mono); letter-spacing: .14em; }
.ribbon__cand { display: flex; align-items: baseline; gap: 12px; min-width: 0; font-size: 13.5px; }
.ribbon__uid, .ribbon__team { font-family: var(--mono); color: var(--cyan); font-size: 12.5px; }
.ribbon__team { color: var(--ink-3); }
.ribbon__name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ribbon__clock {
  display: grid; justify-items: center;
  padding: 2px 18px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  background: var(--obsidian);
  line-height: 1.1;
}
.ribbon__clock small { font: 600 9.5px var(--mono); letter-spacing: .14em; color: var(--ink-3); text-transform: uppercase; }
.ribbon__clock b { font: 700 26px var(--mono); color: var(--green); font-variant-numeric: tabular-nums; }
.ribbon__clock[data-level="warn"] b { color: var(--amber); }
.ribbon__clock[data-level="crit"] { border-color: var(--crimson); }
.ribbon__clock[data-level="crit"] b { color: var(--crimson); animation: pulse 1s steps(2) infinite; }
.ribbon__status { display: flex; align-items: center; gap: 10px; }
.pill {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 10px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 12px; font-weight: 600;
}
.pill[data-state="warning"] { border-color: rgba(245, 166, 35, .5); color: var(--amber); }
.pill[data-state="flagged"] { border-color: rgba(240, 72, 78, .55); color: var(--crimson); }
.strikes { display: flex; gap: 4px; }
.strike { width: 12px; height: 18px; border-radius: 3px; background: var(--slate-3); border: 1px solid var(--line-2); }
.strike.is-on { background: var(--crimson); border-color: var(--crimson); box-shadow: 0 0 6px rgba(240, 72, 78, .6); }

.mtabs {
  display: flex; gap: 4px;
  padding: 8px 20px 0;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  background: var(--obsidian);
}
.mtab {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: var(--r-sm) var(--r-sm) 0 0;
  background: transparent;
  color: var(--ink-3);
  cursor: pointer;
  white-space: nowrap;
}
.mtab:hover { color: var(--ink); }
.mtab.is-active { background: var(--slate); border-color: var(--line); color: var(--ink); position: relative; top: 1px; }
.mtab__letter {
  display: grid; place-items: center;
  width: 22px; height: 22px;
  border-radius: 5px;
  background: var(--slate-3);
  font: 700 12px var(--mono);
}
.mtab.is-active .mtab__letter { background: var(--cyan); color: #04141A; }
.mtab__name { font-weight: 600; font-size: 13.5px; }
.mtab__count { font: 500 11.5px var(--mono); color: var(--ink-3); }
.mtab__count[data-full="true"] { color: var(--green); }

.exam__body { display: grid; grid-template-columns: minmax(0, 1fr) 312px; min-height: 0; }

.qpane { display: grid; grid-template-rows: auto 1fr auto; min-height: 0; background: var(--slate); }
.qpane__head {
  display: flex; align-items: center; flex-wrap: wrap; gap: 10px 14px;
  padding: 16px 28px;
  border-bottom: 1px solid var(--line);
}
.qnum b { font: 700 22px var(--mono); color: var(--cyan); }
.qnum small { color: var(--ink-3); font-size: 13px; }
.qmod { color: var(--ink-2); font-size: 13.5px; font-weight: 500; }
.qdwell { margin-left: auto; font: 12.5px var(--mono); color: var(--ink-3); }
.qdwell b { color: var(--ink-2); font-weight: 500; }
.qpane__body { overflow-y: auto; padding: 26px 28px 30px; }
.qstem { font-size: 19px; line-height: 1.55; font-weight: 500; max-width: 64em; margin-bottom: 14px; color: #F3F6FA; }
.qsupp {
  margin: 0 0 14px;
  padding: 10px 14px;
  border-left: 3px solid var(--cyan);
  background: var(--cyan-dim);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--ink-2);
  font-size: 14.5px;
  max-width: 64em;
}
.qhint { font-size: 12.5px; color: var(--ink-3); margin-bottom: 18px; font-family: var(--mono); }
.math { font-size: 1.05em; }

.opts { display: grid; gap: 10px; max-width: 64em; }
.opt {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 22px;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 13px 16px;
  text-align: left;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background: var(--slate-2);
  cursor: pointer;
  transition: border-color .1s, background-color .1s;
}
.opt:hover { border-color: #3B4861; background: var(--slate-3); }
.opt__key {
  display: grid; place-items: center;
  width: 34px; height: 34px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-2);
  font: 700 14px var(--mono);
  color: var(--ink-2);
}
.opt--multi .opt__key { border-radius: 4px; }
.opt__text { font-size: 15.5px; line-height: 1.5; }
.opt__tick { width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--line-2); }
.opt--multi .opt__tick { border-radius: 4px; }
.opt.is-picked { border-color: var(--green); background: var(--green-dim); }
.opt.is-picked .opt__key { background: var(--green); border-color: var(--green); color: #04150D; }
.opt.is-picked .opt__tick { border-color: var(--green); background: var(--green); box-shadow: inset 0 0 0 3px var(--slate-2); }

.qpane__ctrl {
  display: flex; flex-wrap: wrap; gap: 10px;
  padding: 14px 28px;
  border-top: 1px solid var(--line);
  background: var(--slate);
}
.qpane__ctrl #btn-next { margin-left: auto; min-width: 120px; }

.shield {
  display: none;
  position: fixed; inset: 0; z-index: 40;
  place-content: center; justify-items: center; gap: 8px;
  background: var(--obsidian);
  text-align: center;
  padding: 24px;
}
.shield b { font: 700 18px var(--mono); letter-spacing: .12em; color: var(--amber); }
.shield span { color: var(--ink-2); }
body[data-stage="exam"].is-shielded .shield { display: grid; }
body[data-stage="exam"].is-shielded .qpane__body,
body[data-stage="exam"].is-shielded .palette__grid { visibility: hidden; }

/* --- 09 · PALETTE --------------------------------------------------------- */
.palette {
  display: flex; flex-direction: column; gap: 14px;
  min-height: 0;
  padding: 16px;
  overflow-y: auto;
  border-left: 1px solid var(--line);
  background: var(--obsidian);
}
.selfview {
  position: relative;
  flex: none;
  aspect-ratio: 4 / 3;
  width: 100%;
  max-width: 200px;
  align-self: center;
  border-radius: var(--r-sm);
  overflow: hidden;
  background: #000;
  border: 1px solid var(--line);
}
.selfview__tag {
  position: absolute; z-index: 1; left: 6px; top: 6px;
  padding: 2px 6px; border-radius: 3px;
  background: rgba(7, 9, 13, .8);
  font: 700 9px var(--mono); letter-spacing: .12em; color: var(--crimson);
}
.palette__summary {
  display: grid; gap: 2px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--slate);
  font: 12.5px var(--mono);
  color: var(--ink-3);
}
.palette__summary b { color: var(--ink); }
.palette__grid { display: grid; gap: 14px; }
.pgroup__label { font: 600 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 7px; }
.pgroup__cells { display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; }

.pcell {
  position: relative;
  display: grid; place-items: center;
  height: 38px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--ink-3);
  font: 600 13px var(--mono);
  cursor: pointer;
  overflow: hidden;
}
.pcell:hover { border-color: var(--ink-3); color: var(--ink); }
/* answered: solid green + check */
.pcell--answered { background: var(--green); border-color: var(--green); color: #04150D; }
.pcell--answered::after {
  content: ''; position: absolute; right: 4px; bottom: 5px;
  width: 7px; height: 4px;
  border-left: 2px solid #04150D; border-bottom: 2px solid #04150D;
  transform: rotate(-45deg);
}
/* marked: solid amber + bookmark ribbon */
.pcell--marked { background: var(--amber); border-color: var(--amber); color: #1A1003; }
.pcell--marked::before, .pcell--answered-marked::before {
  content: ''; position: absolute; top: 0; right: 5px;
  width: 7px; height: 10px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 70%, 0 100%);
}
.pcell--marked::before { background: #1A1003; }
/* answered + marked: green body with an amber bookmark corner */
.pcell--answered-marked { background: linear-gradient(225deg, var(--amber) 0 14px, var(--green) 14px); border-color: var(--green); color: #04150D; }
.pcell--answered-marked::before { background: #1A1003; right: 3px; width: 6px; height: 8px; }
/* current: laser-cyan outline + glow */
.pcell.is-current { outline: 2px solid var(--cyan); outline-offset: 2px; box-shadow: 0 0 12px rgba(34, 195, 230, .55); color: var(--ink); }
.pcell--answered.is-current, .pcell--marked.is-current, .pcell--answered-marked.is-current { color: #04141A; }
.pcell--bonus { border-color: rgba(56, 189, 248, 0.6); box-shadow: 0 0 6px rgba(56, 189, 248, 0.2); }
.pgroup--bonus { border-top: 1px dashed var(--line); padding-top: 10px; margin-top: 8px; }
.pgroup__label--bonus { color: var(--cyan, #38bdf8); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; }

.palette .legend { margin-top: auto; padding-top: 12px; border-top: 1px solid var(--line); }
.palette .btn--submit { flex: none; }

/* --- 10 · STAGE 5 · RECEIPT ----------------------------------------------- */
.sealed { display: grid; gap: 6px; justify-items: center; text-align: center; padding: 32px; }
.sealed__icon {
  width: 64px; height: 64px; margin-bottom: 8px;
  border-radius: 50%;
  border: 2px solid var(--green);
  background: var(--green-dim);
  position: relative;
}
.sealed__icon::after {
  content: ''; position: absolute; left: 20px; top: 18px;
  width: 22px; height: 12px;
  border-left: 3px solid var(--green); border-bottom: 3px solid var(--green);
  transform: rotate(-45deg);
}
.sealed__title { font-size: 22px; }
.sealed .kv { width: 100%; text-align: left; }
.checksum {
  width: 100%;
  display: grid; gap: 6px;
  padding: 14px;
  margin: 6px 0 10px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  background: var(--obsidian);
  text-align: left;
}
.checksum span { font: 600 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.checksum code { font-weight: 700; font-size: 14px; color: var(--green); overflow-wrap: anywhere; }
.dispatch { list-style: none; width: 100%; padding: 0; margin: 0 0 18px; display: grid; gap: 6px; text-align: left; font-size: 13.5px; }
.dispatch li { display: flex; justify-content: space-between; gap: 14px; }
.dispatch b[data-state="pass"] { color: var(--green); }
.dispatch b[data-state="busy"] { color: var(--amber); }
.dispatch b[data-state="fail"] { color: var(--crimson); }
.dispatch b[data-state="idle"] { color: var(--ink-3); font-weight: 500; }
.sealed .note { max-width: 560px; margin-top: 12px; }

.print-receipt, .print-blocked { display: none; }

/* --- 10b · SUBMITTING STAGE ----------------------------------------------- */
.submitting-stage {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}
.submitting-card {
  text-align: center;
  display: grid;
  justify-items: center;
  gap: 16px;
  padding: 38px 32px;
  max-width: 620px;
  width: 100%;
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  background: var(--slate);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .55);
}
.submitting-animation {
  position: relative;
  width: 84px;
  height: 84px;
  display: grid;
  place-items: center;
  margin-bottom: 4px;
}
.submitting-spinner {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid rgba(46, 213, 115, 0.15);
  border-top-color: var(--cyan);
  border-right-color: var(--green);
  animation: spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}
.submitting-lock-icon {
  color: var(--green);
  animation: pulse-soft 2s ease-in-out infinite;
  display: grid;
  place-items: center;
}
@keyframes pulse-soft {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.08); opacity: 1; }
}
.submitting-title {
  font-size: 23px;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
}
.submitting-lede {
  color: var(--ink-2);
  font-size: 14px;
  margin: 0;
  max-width: 480px;
  line-height: 1.5;
}
.submitting-warning {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  margin: 6px 0;
  background: rgba(245, 158, 11, 0.12);
  border: 1.5px solid rgba(245, 158, 11, 0.45);
  border-radius: var(--r-md);
  text-align: left;
}
.submitting-warning__icon {
  font-size: 22px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
}
.submitting-warning__content {
  display: grid;
  gap: 4px;
}
.submitting-warning__heading {
  font-size: 13.5px;
  font-weight: 800;
  letter-spacing: .05em;
  color: #fbbf24;
  text-transform: uppercase;
}
.submitting-warning__text {
  font-size: 13px;
  line-height: 1.45;
  color: #fde68a;
  margin: 0;
}
.submitting-steps {
  width: 100%;
  display: grid;
  gap: 10px;
  margin-top: 6px;
  text-align: left;
}
.submitting-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  background: var(--obsidian);
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  font-size: 13.5px;
  color: var(--ink-3);
  transition: all .25s ease;
}
.submitting-step.is-complete {
  color: var(--ink);
  border-color: rgba(46, 213, 115, 0.3);
}
.submitting-step.is-complete .submitting-step__badge {
  background: rgba(46, 213, 115, 0.2);
  color: var(--green);
  border-color: var(--green);
}
.submitting-step.is-active {
  color: var(--ink);
  border-color: rgba(56, 189, 248, 0.4);
  background: rgba(14, 165, 233, 0.06);
}
.submitting-step.is-active .submitting-step__badge {
  border-color: var(--cyan);
}
.submitting-step__badge {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--line-2);
  display: grid;
  place-items: center;
  font: 700 11px var(--mono);
  flex-shrink: 0;
}
.submitting-step__badge--spin {
  border-top-color: var(--cyan);
  border-right-color: transparent;
  animation: spin .8s linear infinite;
}

/* --- 11 · MODALS & TOASTS ------------------------------------------------- */
.modal {
  position: fixed; inset: 0; z-index: 60;
  display: grid; place-items: center;
  padding: 20px;
  background: rgba(3, 5, 8, .82);
}
.modal--lock { z-index: 70; background: rgba(3, 5, 8, .96); }
.modal__card {
  width: min(640px, 100%);
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  padding: 26px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  background: var(--slate);
  box-shadow: var(--shadow);
}
.modal__card--lock { width: min(460px, 100%); text-align: center; display: grid; justify-items: center; gap: 14px; border-color: rgba(240, 72, 78, .5); }
.modal__title { font-size: 20px; margin-bottom: 16px; }
.modal__card--lock .modal__title { margin: 0; color: var(--crimson); }
.modal__card--lock p { color: var(--ink-2); }
.modal__actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
.stat { display: grid; gap: 2px; padding: 12px; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--slate-2); }
.stat span { font-size: 12px; color: var(--ink-3); }
.stat b { font: 700 24px var(--mono); }
.stat--ok b { color: var(--green); }
.stat--warn b { color: var(--amber); }
.rv-modules { list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 8px; font-size: 13.5px; }
.rv-modules li { display: grid; grid-template-columns: 180px 1fr 44px; align-items: center; gap: 12px; }
.rv-modules b { font-family: var(--mono); text-align: right; }
.meter { height: 6px; border-radius: 3px; background: var(--slate-3); overflow: hidden; }
.meter i { display: block; height: 100%; background: var(--green); transform-origin: left; }
.rv-lists { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 18px; }
.rv-lists h3 { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 8px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { padding: 3px 9px; border-radius: 5px; border: 1px solid var(--line-2); background: transparent; font: 600 12px var(--mono); cursor: pointer; }
.chip--amber { border-color: var(--amber); color: var(--amber); }
.chip:hover { background: var(--slate-3); }

.ring {
  --p: 1;
  width: 120px; height: 120px;
  border-radius: 50%;
  display: grid; place-content: center; justify-items: center;
  background:
    radial-gradient(closest-side, var(--slate) 84%, transparent 85%),
    conic-gradient(var(--crimson) calc(var(--p) * 360deg), var(--slate-3) 0);
}
.ring b { font: 700 40px var(--mono); line-height: 1; color: var(--crimson); }
.ring small { font: 11px var(--mono); color: var(--ink-3); letter-spacing: .1em; }

.toasts {
  position: fixed; right: 16px; bottom: 16px; z-index: 80;
  display: grid; gap: 8px;
  width: min(360px, calc(100vw - 32px));
  pointer-events: none;
}
.toast {
  display: grid; gap: 2px;
  padding: 12px 14px;
  border: 1px solid var(--line-2);
  border-left: 4px solid var(--cyan);
  border-radius: var(--r-sm);
  background: var(--slate-2);
  box-shadow: var(--shadow);
  font-size: 13.5px;
  animation: toast-in .18s ease-out;
  transition: opacity .35s, transform .35s;
}
.toast strong { font-size: 14px; }
.toast span { color: var(--ink-2); }
.toast--ok { border-left-color: var(--green); }
.toast--warn { border-left-color: var(--amber); }
.toast--danger { border-left-color: var(--crimson); }
.toast.is-leaving { opacity: 0; transform: translateY(8px); }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

/* --- 12 · RESPONSIVE ------------------------------------------------------ */
@media (max-width: 1080px) {
  .protocol { grid-template-columns: 1fr 1fr; }
  .protocol > :last-child { grid-column: 1 / -1; }
  .stepper li { font-size: 0; gap: 0; padding: 4px; }
  .stepper li span { font-size: 11px; }
}
@media (max-width: 900px) {
  .calib, .protocol { grid-template-columns: 1fr; }
  .exam { height: auto; min-height: 100vh; overflow: visible; }
  .exam__body { grid-template-columns: 1fr; }
  .palette { border-left: none; border-top: 1px solid var(--line); overflow: visible; }
  .qpane__body { overflow: visible; }
  .ribbon { grid-template-columns: 1fr auto; row-gap: 8px; }
  .ribbon__brand { display: none; }
  .ribbon__status { grid-column: 1 / -1; justify-content: flex-start; }
  .rv-lists { grid-template-columns: 1fr; }
  .rv-modules li { grid-template-columns: 1fr 80px 44px; }
}
@media (max-width: 560px) {
  .wrap { padding: 20px 16px 40px; }
  .topbar { padding: 10px 16px; }
  .brand__sub { display: none; }
  .kv--grid { grid-template-columns: 1fr; }
  .qpane__head, .qpane__body, .qpane__ctrl { padding-left: 16px; padding-right: 16px; }
  .qpane__ctrl .btn { flex: 1 1 45%; }
  .qpane__ctrl #btn-next { margin-left: 0; }
  .stats { grid-template-columns: 1fr; }
  .terminal { padding: 20px 18px 14px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* --- 13 · PRINT ----------------------------------------------------------- */
@media print {
  @page { size: A4; margin: 14mm 14mm 16mm; }
  html, body { background: #fff !important; color: #111 !important; }
  body > * { display: none !important; }

  /* During the paper nothing is printable. */
  body:not([data-stage="sealed"]) > .print-blocked { display: block !important; font: 16pt var(--font); padding: 40mm 0; text-align: center; }

  /* After sealing, only the official record prints. */
  body[data-stage="sealed"] > .print-receipt { display: block !important; position: relative; font: 10pt/1.45 var(--font); color: #111; }

  .print-watermark {
    position: fixed; inset: -30% -30%;
    display: flex; flex-direction: column; justify-content: space-around; align-items: center;
    transform: rotate(-32deg);
    pointer-events: none;
    z-index: 0;
  }
  .print-watermark span { font: 700 15pt var(--mono); letter-spacing: .08em; color: rgba(20, 30, 50, .085); white-space: nowrap; }

  .pr-head { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: flex-start; gap: 10mm; border-bottom: 2px solid #111; padding-bottom: 4mm; margin-bottom: 5mm; }
  .pr-org { font-size: 8.5pt; letter-spacing: .06em; text-transform: uppercase; color: #444; }
  .pr-head h1 { font-size: 18pt; margin: 2mm 0 1mm; color: #111; }
  .pr-stamp { border: 2.5px solid #0a7a45; color: #0a7a45; font: 700 13pt var(--mono); letter-spacing: .2em; padding: 2mm 5mm; transform: rotate(-6deg); border-radius: 2mm; }
  .pr-id, .pr-ledger { position: relative; z-index: 1; width: 100%; border-collapse: collapse; margin-bottom: 5mm; }
  .pr-id th, .pr-id td { border: 1px solid #999; padding: 1.6mm 2.4mm; text-align: left; font-size: 9.5pt; }
  .pr-id th { background: #f1f3f6 !important; width: 17%; font-weight: 600; }
  .pr-summary { position: relative; z-index: 1; font-weight: 600; margin-bottom: 4mm; }
  .pr-ledger th, .pr-ledger td { border-bottom: 1px solid #bbb; padding: 1.3mm 2mm; font-size: 9pt; text-align: left; }
  .pr-ledger thead { display: table-header-group; }
  .pr-ledger thead th { border-bottom: 1.5px solid #111; font-size: 8pt; text-transform: uppercase; letter-spacing: .06em; }
  .pr-ledger tr { break-inside: avoid; }
  .pr-ledger .num { text-align: right; font-family: var(--mono); }
  .pr-foot { position: relative; z-index: 1; margin-top: 6mm; padding-top: 3mm; border-top: 1px solid #111; font-size: 8.5pt; color: #333; }
  .pr-foot code { font-size: 8.5pt; word-break: break-all; color: #111; }
  .pr-foot p + p { margin-top: 1.5mm; }
}