/* =========================================================
   PAES ASSESSMENT SHELL
   Brand tokens + shared layout + shared components
   Sourced from PAES Microsite brand system (April 2026)
   ========================================================= */
:root {
  --paes-navy: #0E1A2B;
  --paes-navy-2: #1B2A4E;
  --paes-navy-3: #233563;
  --paes-cream: #F6F9FC;
  --paes-yellow: #FFD84D;
  --paes-yellow-dark: #E0B820;
  --paes-ink: #0E1A2B;
  --paes-ink-soft: #4A5878;
  --paes-line: rgba(255,255,255,0.08);
  --paes-line-dark: rgba(14,26,43,0.12);
  --bg: var(--paes-navy);
  --surface: var(--paes-navy-2);
  --surface-2: var(--paes-navy-3);
  --text: #ffffff;
  --text-muted: #B8C3D9;
  --success: #4ade80;
  --success-strong: #22c55e;
  --danger: #f87171;
  --danger-strong: #ef4444;
  --warn: var(--paes-yellow);
  --focus: var(--paes-yellow);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --touch: 56px;
  --font-size: 15px;
  --shadow: 0 4px 20px rgba(0,0,0,0.25);
  --transition: 0.15s ease;
}
body.high-contrast {
  --paes-navy: #000;
  --paes-navy-2: #111;
  --paes-navy-3: #222;
  --paes-yellow: #FFD84D;
  --text: #fff;
  --text-muted: #ddd;
  --focus: #FFD84D;
  /* Override the derived tokens too. CSS custom properties resolve at the
     scope where they were declared — :root's --bg: var(--paes-navy) keeps its
     :root value unless we re-declare here. */
  --bg: #000;
  --surface: #111;
  --surface-2: #222;
  --paes-line: rgba(255,255,255,0.22);
}
body.large-text { --font-size: 18px; --touch: 64px; }
@media (prefers-reduced-motion: reduce) {
  :root { --transition: 0s; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Inter, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: var(--font-size);
  line-height: 1.4;
  overflow: hidden;
}
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; border: none; background: none; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}
kbd {
  background: var(--paes-navy);
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px solid var(--paes-line);
  font-size: 11px;
  font-family: 'Courier New', monospace;
}
code { background: var(--paes-navy); padding: 1px 6px; border-radius: 3px; font-size: 12px; }

/* PAES wordmark */
.paes-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  font-size: 22px;
  color: var(--text);
}
.paes-mark .dot {
  width: 10px; height: 10px;
  background: var(--paes-yellow);
  border-radius: 50%;
  display: inline-block;
}
.paes-tagline {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 2px;
}

/* Header */
.app { display: grid; grid-template-rows: auto 1fr; height: 100vh; }
header.app-header {
  background: var(--paes-navy);
  border-bottom: 1px solid var(--paes-line);
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
}
.brand-block { display: flex; align-items: center; gap: 16px; }
.brand-block .divider { width: 1px; height: 32px; background: var(--paes-line); }
.product-name { font-size: 16px; font-weight: 600; color: var(--text); }
.product-name small {
  font-size: 10px; color: var(--text-muted); display: block;
  text-transform: uppercase; letter-spacing: 0.1em; margin-top: 2px;
}
.header-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.session-badge {
  background: var(--paes-navy-2);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 11px; color: var(--text-muted);
  border: 1px solid var(--paes-line);
  line-height: 1.3;
  max-width: 220px;
  overflow: hidden;
}
.session-badge strong, .session-badge span {
  color: var(--text); display: block; font-size: 12px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.session-badge span { color: var(--text-muted); font-size: 11px; }
.mode-pill {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
}
.mode-pill.student { background: var(--paes-navy-2); color: var(--paes-yellow); border: 1px solid var(--paes-yellow); }
.mode-pill.teacher { background: var(--paes-yellow); color: var(--paes-navy); }
.icon-btn {
  background: var(--paes-navy-2);
  color: var(--text);
  min-height: 42px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  font-size: 12px; font-weight: 600;
  border: 1px solid var(--paes-line);
  transition: all var(--transition);
}
.icon-btn:hover { background: var(--paes-navy-3); }
.icon-btn.primary { background: var(--paes-yellow); color: var(--paes-navy); border-color: var(--paes-yellow); }
.icon-btn.primary:hover { background: var(--paes-yellow-dark); }

/* Main grid */
main.grid {
  display: grid;
  grid-template-columns: 320px 1fr 340px;
  gap: 14px; padding: 14px;
  height: calc(100vh - 71px);
  min-height: 0;
}
@media (max-width: 1200px) {
  main.grid { grid-template-columns: 1fr; height: auto; overflow: auto; }
  body { overflow: auto; }
}
.panel {
  background: var(--surface);
  border: 1px solid var(--paes-line);
  border-radius: var(--radius);
  padding: 16px;
  overflow-y: auto;
  display: flex; flex-direction: column;
  min-height: 0;
}
.panel h2 {
  font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.15em;
  color: var(--paes-yellow);
  margin-bottom: 14px; padding-bottom: 10px;
  border-bottom: 1px solid var(--paes-line);
  flex-shrink: 0; font-weight: 700;
}
.panel-runtime { padding: 12px; }

/* Scenario panel */
.job-tabs {
  display: flex; gap: 4px;
  margin-bottom: 14px;
  background: var(--paes-navy);
  padding: 4px;
  border-radius: var(--radius-sm);
  flex-wrap: wrap;
}
.job-tabs button {
  flex: 1; min-width: 44px;
  color: var(--text-muted);
  padding: 8px 6px;
  border-radius: 6px;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.05em;
  min-height: 36px;
  transition: all var(--transition);
}
.job-tabs button[aria-pressed="true"] {
  background: var(--paes-yellow);
  color: var(--paes-navy);
}
.job-desc {
  font-size: 12px; color: var(--text-muted);
  line-height: 1.5; margin-bottom: 12px;
  padding: 10px 12px;
  background: var(--paes-navy);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--paes-yellow);
}
.customer-nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px; margin-bottom: 12px;
}
.customer-nav button {
  background: var(--paes-navy);
  color: var(--text);
  width: var(--touch); height: var(--touch);
  border-radius: var(--radius-sm);
  font-size: 16px;
  border: 1px solid var(--paes-line);
}
.customer-nav button:disabled { opacity: 0.3; cursor: not-allowed; }
.customer-nav .label { font-size: 13px; font-weight: 600; text-align: center; flex: 1; }
.help {
  font-size: 11px; color: var(--text-muted);
  line-height: 1.5; padding: 10px 12px;
  background: var(--paes-navy);
  border-radius: var(--radius-sm);
}

/* Generic scenario card (shared by every unit) */
.scenario-card {
  background: var(--paes-cream);
  color: var(--paes-ink);
  padding: 18px;
  border-radius: var(--radius-sm);
  font-size: 14px; line-height: 1.6;
  margin-bottom: 14px;
}
.scenario-card .cust-head {
  font-weight: 700; font-size: 13px;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--paes-ink-soft); margin-bottom: 6px;
}
.scenario-card .cust-identity {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 10px;
}
.scenario-card .cust-avatar {
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--paes-cream);
  border: 2px solid var(--paes-yellow);
  object-fit: cover; flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(14, 26, 43, 0.1);
}
.scenario-card .cust-identity-text { flex: 1; min-width: 0; }
.scenario-card .cust-name {
  font-weight: 700; font-size: 16px;
  color: var(--paes-navy); line-height: 1.2;
}
.scenario-card .cust-sub {
  font-size: 11px; color: var(--paes-ink-soft);
  text-transform: uppercase; letter-spacing: 0.08em;
  margin-top: 2px;
}
.scenario-card .customer-says {
  font-size: 15px; font-weight: 500;
  color: var(--paes-navy);
  padding: 10px 12px;
  background: rgba(255, 216, 77, 0.2);
  border-left: 3px solid var(--paes-yellow);
  border-radius: 4px;
  margin-bottom: 10px;
}
.scenario-card .expected {
  font-size: 12px; color: var(--paes-ink-soft);
  padding-top: 10px;
  border-top: 1px dashed var(--paes-line-dark);
  display: none;
}
body.mode-teacher .scenario-card .expected { display: block; }
.scenario-card .expected strong { color: var(--paes-navy); }
.scenario-card .expected li { margin-left: 18px; margin-top: 4px; }

/* Scoring panel */
.scoreboard { flex: 1; overflow-y: auto; min-height: 120px; }
.score-row {
  display: flex; justify-content: space-between;
  align-items: center; gap: 8px;
  padding: 10px 12px;
  margin-bottom: 6px;
  background: var(--paes-navy);
  border-radius: var(--radius-sm);
  font-size: 12px;
  border-left: 3px solid var(--paes-navy-3);
}
.score-row.pass { border-left-color: var(--success-strong); }
.score-row.fail { border-left-color: var(--danger-strong); }
.score-row.current { background: var(--paes-navy-3); }
.score-row .mark { font-size: 16px; font-weight: 700; }
.score-row.pass .mark { color: var(--success); }
.score-row.fail .mark { color: var(--danger); }
.summary {
  padding: 14px; background: var(--paes-navy);
  border-radius: var(--radius-sm);
  margin-top: 12px; text-align: center; flex-shrink: 0;
}
.summary .label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }
.summary .big {
  font-size: 36px; font-weight: 800;
  color: var(--paes-yellow);
  line-height: 1; margin: 8px 0 4px;
}
.summary .pct { font-size: 12px; color: var(--text-muted); }
.toolbar { display: flex; gap: 6px; margin-top: 10px; }
.toolbar button {
  flex: 1; min-height: 40px;
  padding: 8px 10px;
  background: var(--paes-navy);
  color: var(--text);
  border-radius: var(--radius-sm);
  font-size: 12px; font-weight: 600;
  border: 1px solid var(--paes-line);
}
.toolbar button.primary {
  background: var(--paes-yellow);
  color: var(--paes-navy);
  border-color: var(--paes-yellow);
  font-weight: 700;
}
.toolbar button:hover { background: var(--paes-navy-3); }
.toolbar button.primary:hover { background: var(--paes-yellow-dark); }

/* Modals */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(14, 26, 43, 0.85);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center; justify-content: center;
  z-index: 200; padding: 20px;
}
.modal-backdrop.active { display: flex; }
#sessionSummaryBackdrop, #unitPickerBackdrop, #helpBackdrop, #qrScannerBackdrop { z-index: 260; }

/* QR login panel on onboarding */
.qr-login-panel { margin-bottom: 18px; }
.qr-scan-btn {
  width: 100%;
  display: flex; align-items: center; gap: 14px;
  padding: 16px 18px;
  background: linear-gradient(135deg, rgba(255, 216, 77, 0.10), rgba(255, 216, 77, 0.04));
  border: 1.5px solid var(--paes-yellow);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, transform 0.1s;
}
.qr-scan-btn:hover { background: linear-gradient(135deg, rgba(255, 216, 77, 0.18), rgba(255, 216, 77, 0.08)); }
.qr-scan-btn:active { transform: scale(0.98); }
.qr-icon { font-size: 28px; flex-shrink: 0; }
.qr-scan-label { flex: 1; display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.qr-scan-label strong { font-size: 14px; color: var(--paes-yellow); font-weight: 700; }
.qr-scan-label small { font-size: 12px; color: var(--text-muted); font-weight: 400; }
[hidden] { display: none !important; }
.qr-scanned {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 16px;
  background: rgba(255, 216, 77, 0.12);
  border: 2px solid var(--paes-yellow);
  border-radius: var(--radius-sm);
  margin-top: 8px;
}
.qr-scanned-avatar {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--paes-cream); object-fit: cover;
  border: 2px solid var(--paes-yellow); flex-shrink: 0;
}
.qr-scanned-text { flex: 1; min-width: 0; }
.qr-scanned-name { font-weight: 700; font-size: 16px; color: var(--text); }
.qr-scanned-sid { font-size: 11px; color: var(--text-muted); font-family: 'Courier New', monospace; letter-spacing: 0.04em; }
.qr-clear-btn {
  background: transparent; border: 1px solid var(--paes-line);
  color: var(--text-muted); width: 28px; height: 28px;
  border-radius: 50%; font-size: 16px; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.qr-clear-btn:hover { background: rgba(255, 255, 255, 0.08); color: var(--text); }
.help-line { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
/* When QR login is active, de-emphasise manual type field */
.qr-locked #studentTypeField { opacity: 0.4; pointer-events: none; }
.qr-locked #studentTypeField input { background: rgba(255,255,255,0.02); }

/* Voice mode listening indicator · floats at bottom of screen when mic is live */
.voice-indicator {
  position: fixed;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
.voice-indicator.active { opacity: 1; }
.voice-indicator-core {
  position: relative;
  display: flex; align-items: center; gap: 12px;
  background: var(--paes-navy-2);
  border: 2px solid var(--paes-yellow);
  border-radius: 999px;
  padding: 14px 26px 14px 22px;
  box-shadow: 0 8px 32px rgba(14, 26, 43, 0.5);
}
.voice-indicator-pulse {
  position: absolute;
  inset: -2px;
  border-radius: 999px;
  border: 2px solid var(--paes-yellow);
  animation: voicePulse 1.4s ease-out infinite;
}
@keyframes voicePulse {
  0%   { transform: scale(1);    opacity: 0.7; }
  100% { transform: scale(1.18); opacity: 0; }
}
.voice-indicator-icon { font-size: 22px; }
.voice-indicator-label {
  font-family: 'Helvetica Neue', sans-serif;
  font-size: 14px; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paes-yellow);
}

/* When voice mode is active, gentle visual cue in the header */
body.voice-mode .mode-pill::after {
  content: ' · 🎙';
}
body.accessible-mode .mode-pill::after {
  content: ' · ♿︎ 🎙';
}

/* Accessible-mode-only elements (item scanner button, etc.) */
.access-only { display: none; }
body.accessible-mode .access-only { display: block; }

/* QR reader area */
.qr-reader {
  width: 100%; min-height: 280px;
  background: #000; border-radius: var(--radius-sm);
  overflow: hidden; margin: 14px 0;
}
.qr-reader video { width: 100%; height: auto; display: block; }
.qr-scanner-msg {
  padding: 10px 14px; background: rgba(255, 216, 77, 0.12);
  border-left: 3px solid var(--paes-yellow);
  border-radius: 3px; color: var(--text);
  font-size: 13px; min-height: 20px;
}
.qr-scanner-msg:empty { display: none; }
.qr-scanner-msg.error { background: rgba(231, 76, 60, 0.15); border-left-color: #e74c3c; }
.modal {
  background: var(--paes-navy-2);
  border: 1px solid var(--paes-line);
  padding: 32px;
  border-radius: var(--radius-lg);
  max-width: 520px; width: 100%;
  max-height: 90vh; overflow-y: auto;
  box-shadow: var(--shadow);
}
.modal .brand-row { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--paes-line); }
.modal h2 { font-size: 22px; color: var(--text); margin: 0; padding: 0; border: 0; letter-spacing: normal; text-transform: none; }
.modal .subtitle { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.field { margin-bottom: 16px; }
.field label {
  display: block; font-size: 11px;
  color: var(--text-muted); margin-bottom: 6px;
  text-transform: uppercase; letter-spacing: 0.1em;
  font-weight: 600;
}
.field input, .field select {
  width: 100%;
  padding: 12px 14px;
  background: var(--paes-navy);
  border: 1px solid var(--paes-line);
  border-radius: var(--radius-sm);
  color: var(--text);
  min-height: 46px;
  font-size: 14px;
}
.field input:focus, .field select:focus { border-color: var(--paes-yellow); }
.modal-actions {
  display: flex; gap: 10px; justify-content: flex-end; margin-top: 24px;
}
.modal-actions button {
  min-height: 46px;
  padding: 12px 22px;
  background: var(--paes-navy);
  color: var(--text);
  border-radius: var(--radius-sm);
  font-weight: 600; font-size: 14px;
  border: 1px solid var(--paes-line);
}
.modal-actions button.primary {
  background: var(--paes-yellow); color: var(--paes-navy);
  border-color: var(--paes-yellow); font-weight: 700;
}
.modal-actions button:hover { background: var(--paes-navy-3); }
.modal-actions button.primary:hover { background: var(--paes-yellow-dark); }

/* Unit picker */
.unit-picker-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px; margin: 10px 0;
}
.unit-picker-card {
  background: var(--paes-navy);
  border: 2px solid var(--paes-line);
  color: var(--text);
  padding: 22px 16px;
  border-radius: var(--radius);
  text-align: center;
  min-height: 180px;
  transition: all var(--transition);
  display: flex; flex-direction: column; gap: 8px;
  align-items: center; justify-content: center;
}
.unit-picker-card:hover {
  border-color: var(--paes-yellow);
  transform: translateY(-2px);
}
.unit-picker-card .icon { font-size: 44px; line-height: 1; }
.unit-picker-card .name {
  font-size: 16px; font-weight: 700;
  margin-top: 4px;
}
.unit-picker-card .desc {
  font-size: 12px; color: var(--text-muted);
  line-height: 1.4;
}

/* Session summary */
.summary-detail table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 13px; }
.summary-detail th, .summary-detail td {
  padding: 10px 12px; text-align: left;
  border-bottom: 1px solid var(--paes-line);
}
.summary-detail th {
  color: var(--paes-yellow);
  text-transform: uppercase; letter-spacing: 0.1em;
  font-size: 10px; font-weight: 700;
}

/* Result toast (unit can fire this) */
.result-toast {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(120%);
  background: var(--paes-navy-2);
  color: var(--text);
  padding: 14px 24px;
  border-radius: var(--radius-lg);
  font-weight: 600; font-size: 14px;
  box-shadow: var(--shadow);
  border: 2px solid var(--paes-line);
  transition: transform 0.3s ease;
  z-index: 300;
}
.result-toast.show { transform: translateX(-50%) translateY(0); }
.result-toast.pass { border-color: var(--success-strong); }
.result-toast.fail { border-color: var(--danger-strong); }

/* Print */
@media print {
  body { background: #fff; color: var(--paes-navy); overflow: auto; }
  .app > *, header.app-header, main.grid { display: none !important; }
  #sessionSummaryBackdrop { position: static; display: block !important; background: #fff; padding: 20px; }
  #sessionSummaryBackdrop .modal { background: #fff; color: var(--paes-navy); max-width: none; box-shadow: none; border: none; }
  #sessionSummaryBackdrop .modal h2, .summary-detail th { color: var(--paes-navy); }
}