/* ML Lab 360 — shared design system
   Palette is deliberately dark: the webcam feed and the confidence bars are
   the heroes, and they read best against a deep surround. */

@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,400;12..96,700;12..96,800&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;700&display=swap');

:root {
  --abyss:   #0B1026;
  --slate:   #161F42;
  --slate-2: #212C57;
  --chalk:   #EDF2FB;
  --muted:   #8A97C2;

  --volt:    #FFD23F;
  --coral:   #FF5E5B;
  --aqua:    #00C2A8;
  --violet:  #A46BFF;

  --display: 'Bricolage Grotesque', system-ui, sans-serif;
  --body:    'Inter', system-ui, sans-serif;
  --mono:    'JetBrains Mono', ui-monospace, monospace;

  --r: 14px;
  --edge: 3px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--abyss);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(164,107,255,.10), transparent 45%),
    radial-gradient(circle at 88% 92%, rgba(0,194,168,.10), transparent 45%);
  background-attachment: fixed;
  color: var(--chalk);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.55;
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 24px 20px 80px; }

/* --- Machine voice vs human voice -------------------------------------- */
/* Anything the machine reports is set in mono. Anything we say to the kids
   is set in the body face. Keep this rule honest — it teaches them to read
   the interface. */
.readout, .stat, .pct, .count { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* --- Header ------------------------------------------------------------ */
.topbar {
  display: flex; align-items: center; gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 22px;
  border-bottom: var(--edge) solid var(--slate-2);
  margin-bottom: 34px;
}

.brand {
  font-family: var(--display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -.02em;
  text-decoration: none;
  color: var(--chalk);
  display: flex; align-items: center; gap: 10px;
}
.brand .dot {
  width: 14px; height: 14px; border-radius: 4px;
  background: var(--volt);
  box-shadow: 0 0 0 3px rgba(255,210,63,.2);
}
.topbar .spacer { flex: 1 1 auto; }

/* --- Lane switch ------------------------------------------------------- */
.lane-switch {
  display: inline-flex;
  border: var(--edge) solid var(--slate-2);
  border-radius: 999px;
  padding: 3px;
  background: var(--slate);
}
.lane-switch button {
  font-family: var(--body);
  font-weight: 600;
  font-size: 14px;
  padding: 7px 16px;
  border: 0; border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.lane-switch button[aria-pressed="true"] { background: var(--volt); color: var(--abyss); }
.lane-switch button:focus-visible { outline: 3px solid var(--aqua); outline-offset: 2px; }

body[data-lane="explorer"] [data-lane-only="engineer"] { display: none !important; }

/* --- Type -------------------------------------------------------------- */
h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(34px, 6.5vw, 62px);
  line-height: 1.02;
  letter-spacing: -.035em;
  margin: 0 0 14px;
}
h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(21px, 3vw, 27px);
  letter-spacing: -.02em;
  margin: 0 0 10px;
}
.lede { font-size: 18px; color: var(--muted); max-width: 60ch; margin: 0 0 30px; }
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--volt);
  margin: 0 0 10px;
}

/* --- Panels ------------------------------------------------------------ */
.panel {
  background: var(--slate);
  border: var(--edge) solid var(--slate-2);
  border-radius: var(--r);
  padding: 22px;
  margin-bottom: 22px;
}
.panel.lit { border-color: var(--volt); }

/* --- Buttons ----------------------------------------------------------- */
.btn {
  font-family: var(--display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -.01em;
  padding: 13px 22px;
  border-radius: 11px;
  border: var(--edge) solid var(--abyss);
  background: var(--volt);
  color: var(--abyss);
  cursor: pointer;
  box-shadow: 5px 5px 0 rgba(0,0,0,.45);
  transition: transform .07s ease, box-shadow .07s ease;
}
.btn:hover:not(:disabled) { transform: translate(2px,2px); box-shadow: 3px 3px 0 rgba(0,0,0,.45); }
.btn:active:not(:disabled) { transform: translate(5px,5px); box-shadow: 0 0 0 rgba(0,0,0,.45); }
.btn:focus-visible { outline: 3px solid var(--aqua); outline-offset: 3px; }
.btn:disabled { opacity: .35; cursor: not-allowed; box-shadow: 5px 5px 0 rgba(0,0,0,.2); }
.btn.ghost { background: transparent; color: var(--chalk); border-color: var(--slate-2); box-shadow: none; }
.btn.ghost:hover:not(:disabled) { border-color: var(--muted); transform: none; }
.btn.sm { font-size: 14px; padding: 9px 15px; box-shadow: 3px 3px 0 rgba(0,0,0,.45); }

/* --- Module list ------------------------------------------------------- */
.bench { display: grid; gap: 14px; }
.module {
  display: grid;
  grid-template-columns: 62px 1fr auto;
  gap: 18px;
  align-items: center;
  background: var(--slate);
  border: var(--edge) solid var(--slate-2);
  border-radius: var(--r);
  padding: 18px 20px;
  text-decoration: none;
  color: inherit;
}
.module:hover { border-color: var(--volt); }
.module:focus-visible { outline: 3px solid var(--aqua); outline-offset: 3px; }
.module .num {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 26px;
  color: var(--volt);
}
.module .title { font-family: var(--display); font-weight: 700; font-size: 19px; letter-spacing: -.01em; }
.module .blurb { color: var(--muted); font-size: 14.5px; margin-top: 3px; }
.module .tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 7px; border: 2px solid var(--slate-2); color: var(--muted);
  white-space: nowrap;
}
.module.done .tag { color: var(--aqua); border-color: var(--aqua); }
.module.locked { opacity: .42; pointer-events: none; }

@media (max-width: 620px) {
  .module { grid-template-columns: 44px 1fr; }
  .module .tag { grid-column: 2; justify-self: start; }
  .module .num { font-size: 20px; }
}

/* --- Forms (accounts, portals) ----------------------------------------- */
.field { display: block; margin-bottom: 16px; }
.field span {
  display: block; font-size: 13px; font-weight: 600; color: var(--muted);
  margin-bottom: 6px; letter-spacing: .02em;
}
.field input, .field select {
  width: 100%;
  font-family: var(--body); font-size: 16px;
  color: var(--chalk);
  background: var(--abyss);
  border: var(--edge) solid var(--slate-2);
  border-radius: 10px;
  padding: 11px 13px;
}
.field input:focus-visible, .field select:focus-visible {
  outline: 3px solid var(--aqua); outline-offset: 1px;
}
.form-err { color: var(--coral); font-size: 14px; min-height: 20px; margin: 6px 0 10px; }
.form-ok  { color: var(--aqua);  font-size: 14px; min-height: 20px; margin: 6px 0 10px; }

.auth-wrap { max-width: 440px; margin: 0 auto; }

/* --- Tabs -------------------------------------------------------------- */
.tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.tabs button {
  font-family: var(--display); font-weight: 700; font-size: 16px;
  padding: 10px 18px; border-radius: 10px;
  border: var(--edge) solid var(--slate-2);
  background: transparent; color: var(--muted); cursor: pointer;
}
.tabs button[aria-selected="true"] { background: var(--slate); color: var(--chalk); border-color: var(--volt); }
.tabs button:focus-visible { outline: 3px solid var(--aqua); outline-offset: 2px; }

/* --- Avatar picker (child login + profile editing) --------------------- */
.avatar-grid { display: flex; flex-wrap: wrap; gap: 12px; margin: 14px 0; }
.avatar-btn {
  display: grid; place-items: center; gap: 4px;
  width: 92px; padding: 12px 6px;
  font-size: 34px; cursor: pointer;
  background: var(--slate); color: var(--chalk);
  border: var(--edge) solid var(--slate-2); border-radius: var(--r);
}
.avatar-btn small { font-family: var(--body); font-size: 13px; font-weight: 600; }
.avatar-btn[aria-pressed="true"], .avatar-btn:hover { border-color: var(--volt); }
.avatar-btn:focus-visible { outline: 3px solid var(--aqua); outline-offset: 2px; }

/* --- Account chip in the topbar ---------------------------------------- */
.who {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--muted);
}
.who .btn.sm { font-size: 13px; padding: 7px 12px; }

/* --- Report tables ------------------------------------------------------ */
table.report { width: 100%; border-collapse: collapse; font-size: 14.5px; }
table.report th {
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted); text-align: left;
  padding: 8px 10px; border-bottom: 2px solid var(--slate-2);
}
table.report td { padding: 10px; border-bottom: 1px solid var(--slate-2); }
table.report tr:last-child td { border-bottom: 0; }
.pill {
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  padding: 4px 9px; border-radius: 7px; border: 2px solid var(--slate-2); color: var(--muted);
  white-space: nowrap;
}
.pill.good { color: var(--aqua);  border-color: var(--aqua); }
.pill.warn { color: var(--volt);  border-color: var(--volt); }
.pill.bad  { color: var(--coral); border-color: var(--coral); }

/* --- Stat tiles --------------------------------------------------------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; }
.stat-tile {
  background: var(--slate); border: var(--edge) solid var(--slate-2);
  border-radius: var(--r); padding: 16px 18px;
}
.stat-tile .big { font-family: var(--mono); font-size: 30px; font-weight: 700; color: var(--volt); }
.stat-tile .lbl { font-size: 13px; color: var(--muted); margin-top: 2px; }

/* --- Module footer nav --------------------------------------------------- */
.modnav {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  margin-top: 34px; padding-top: 22px;
  border-top: var(--edge) solid var(--slate-2);
}
.modnav .dots { display: flex; gap: 8px; flex: 1 1 auto; justify-content: center; }
.modnav .dots a {
  width: 13px; height: 13px; border-radius: 4px;
  background: var(--slate-2); display: block;
}
.modnav .dots a.done { background: var(--aqua); }
.modnav .dots a.here { outline: 3px solid var(--volt); outline-offset: 2px; }
.modnav .dots a:hover { background: var(--volt); }

/* --- Quiz dialog --------------------------------------------------------- */
.quizdlg {
  background: var(--slate); color: var(--chalk);
  border: var(--edge) solid var(--slate-2); border-radius: var(--r);
  padding: 26px; max-width: 620px; width: calc(100vw - 40px);
  max-height: 85vh; overflow-y: auto;
}
.quizdlg::backdrop { background: rgba(4,6,18,.75); }
.quizdlg h2 { margin-top: 0; }
.qlist { padding-left: 20px; display: grid; gap: 18px; margin: 18px 0; }
.qprompt { font-weight: 600; margin: 0 0 8px; }
.qchoice {
  display: flex; gap: 10px; align-items: baseline;
  padding: 7px 10px; border-radius: 9px; cursor: pointer; font-size: 15px;
}
.qchoice:hover { background: var(--slate-2); }
.qchoice input { accent-color: var(--volt); }
.q-right .qprompt::after { content: ' ✓'; color: var(--aqua); }
.q-wrong .qprompt::after { content: ' ✗'; color: var(--coral); }
.qchoice.is-answer { outline: 2px solid var(--aqua); }
.quizfoot { display: flex; align-items: center; gap: 12px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}