/* quiz.css
   Level Up Quiz overlay. Mobile-first (390px), expands to centered dialog on desktop.
   Uses the warm-dark design-system tokens from the lesson prototype. */

/* ── Overlay backdrop ────────────────────────────────────────────────── */

.ms-quiz-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  z-index: 10000;
  display: flex;
  align-items: flex-end;     /* mobile: card slides up from bottom */
  justify-content: center;
  padding: 0;
  overflow-y: auto;
}

@media (min-width: 600px) {
  .ms-quiz-overlay {
    align-items: center;     /* desktop: vertically centered */
    padding: 2rem;
  }
}

/* ── Quiz card ───────────────────────────────────────────────────────── */

.ms-quiz-card {
  position: relative;
  background: var(--surface-1, #1c1812);
  border: 1px solid var(--border-strong, #3a3225);
  border-radius: var(--radius, 6px) var(--radius, 6px) 0 0;  /* mobile: flat bottom */
  padding: 1.5rem 1.25rem 1.75rem;
  width: 100%;
  max-width: 560px;
  font-family: var(--font-body, Georgia, serif);
  color: var(--text, #e6dccb);
  box-shadow: 0 -4px 32px rgba(0, 0, 0, 0.5);
}

@media (min-width: 600px) {
  .ms-quiz-card {
    border-radius: var(--radius, 6px);  /* desktop: fully rounded */
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6);
  }
}

/* ── Close button ────────────────────────────────────────────────────── */

.ms-quiz-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: transparent;
  border: none;
  color: var(--faint, #8a8068);
  font-size: 1rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm, 4px);
  transition: color 0.15s;
}
.ms-quiz-close:hover { color: var(--muted, #b3a892); }

/* ── Progress dots ───────────────────────────────────────────────────── */

.ms-quiz-progress {
  display: flex;
  gap: 6px;
  margin-bottom: 1.1rem;
}

.ms-quiz-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--surface-3, #2e271d);
  border: 1px solid var(--border-strong, #3a3225);
  transition: background 0.25s;
}
.ms-quiz-dot.done   { background: var(--teal, #5bb3a6); border-color: var(--teal, #5bb3a6); }
.ms-quiz-dot.active { background: var(--amber, #d8a85a); border-color: var(--amber, #d8a85a); }

/* ── Faculty-only badges ─────────────────────────────────────────────── */
/* Hidden by default; .faculty-mode body class (set by runway item 4) reveals them. */

.faculty-only {
  display: none;
}
body.faculty-mode .faculty-only {
  display: inline-block;
}

.ms-quiz-ci-badge {
  margin-bottom: 0.5rem;
  padding: 0.15rem 0.55rem;
  font-family: var(--font-display, system-ui, sans-serif);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber, #d8a85a);
  background: var(--amber-soft, rgba(216,168,90,0.10));
  border: 1px solid var(--amber-line, rgba(216,168,90,0.40));
  border-radius: 3px;
  vertical-align: middle;
}

.ms-quiz-bloom {
  margin-left: 0.5rem;
  padding: 0.15rem 0.55rem;
  font-family: var(--font-display, system-ui, sans-serif);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--altgray, #9bb5ad);
  background: var(--altgray-soft, rgba(155,181,173,0.09));
  border: 1px solid var(--altgray-line, rgba(155,181,173,0.35));
  border-radius: 3px;
  vertical-align: middle;
}

/* ── Low-floor entry ─────────────────────────────────────────────────── */

.ms-quiz-low-floor {
  display: flex;
  gap: 0.5rem;
  align-items: baseline;
  margin-bottom: 0.9rem;
  padding: 0.6rem 0.85rem;
  background: var(--teal-soft, rgba(91,179,166,0.10));
  border-left: 3px solid var(--teal-line, rgba(91,179,166,0.38));
  border-radius: 0 var(--radius-sm, 4px) var(--radius-sm, 4px) 0;
  font-size: 0.875rem;
  color: var(--muted, #b3a892);
}

.ms-quiz-floor-label {
  font-family: var(--font-display, system-ui, sans-serif);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--teal, #5bb3a6);
  white-space: nowrap;
}

/* ── Question text ───────────────────────────────────────────────────── */

.ms-quiz-q {
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--text, #e6dccb);
  margin: 0 0 1.1rem;
}

/* ── MC choices ──────────────────────────────────────────────────────── */

.ms-quiz-choices {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.ms-quiz-choice {
  text-align: left;
  padding: 0.7rem 1rem;
  background: var(--surface-2, #241f17);
  border: 1px solid var(--border-strong, #3a3225);
  border-radius: var(--radius-sm, 4px);
  color: var(--text, #e6dccb);
  font-size: 0.9375rem;
  font-family: var(--font-body, Georgia, serif);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.ms-quiz-choice:hover:not(:disabled) {
  background: var(--surface-3, #2e271d);
  border-color: var(--muted, #b3a892);
}
.ms-quiz-choice:disabled { cursor: default; }
.ms-quiz-choice.correct-choice {
  background: rgba(91, 179, 166, 0.18);
  border-color: var(--teal, #5bb3a6);
  color: var(--teal, #5bb3a6);
}
.ms-quiz-choice.wrong-choice {
  background: rgba(224, 106, 82, 0.14);
  border-color: var(--red, #e06a52);
  color: var(--red, #e06a52);
}

/* ── Short-answer ────────────────────────────────────────────────────── */

.ms-quiz-short-wrap {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.ms-quiz-short-input {
  flex: 1;
  padding: 0.65rem 0.9rem;
  background: var(--surface-2, #241f17);
  border: 1px solid var(--border-strong, #3a3225);
  border-radius: var(--radius-sm, 4px);
  color: var(--text, #e6dccb);
  font-size: 0.9375rem;
  font-family: var(--font-body, Georgia, serif);
  transition: border-color 0.15s;
}
.ms-quiz-short-input:focus {
  outline: none;
  border-color: var(--teal, #5bb3a6);
}
.ms-quiz-short-input:disabled { opacity: 0.6; }

.ms-quiz-check-btn {
  padding: 0.65rem 1.1rem;
  background: var(--teal, #5bb3a6);
  color: var(--bg, #15120e);
  border: none;
  border-radius: var(--radius-sm, 4px);
  font-family: var(--font-display, system-ui, sans-serif);
  font-weight: 700;
  font-size: 0.875rem;
  cursor: pointer;
  transition: opacity 0.15s;
}
.ms-quiz-check-btn:hover:not(:disabled) { opacity: 0.88; }
.ms-quiz-check-btn:disabled { opacity: 0.5; cursor: default; }

/* ── Feedback block ──────────────────────────────────────────────────── */

.ms-quiz-feedback {
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border, #2c261c);
}

.ms-quiz-result-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.65rem;
}
.ms-quiz-result-row.correct .ms-quiz-result-icon { color: var(--teal, #5bb3a6); }
.ms-quiz-result-row.wrong   .ms-quiz-result-icon { color: var(--red, #e06a52); }
.ms-quiz-result-text { font-size: 0.9375rem; }

.ms-quiz-explain {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--muted, #b3a892);
  margin-bottom: 0.75rem;
  padding: 0.6rem 0.85rem;
  background: var(--surface-2, #241f17);
  border-radius: var(--radius-sm, 4px);
}

/* ── Prerequisite hint (wrong answer only) ───────────────────────────── */

.ms-quiz-prereq-hint {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--muted, #b3a892);
  margin-bottom: 0.75rem;
}

.ms-quiz-prereq-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: transparent;
  border: 1px solid var(--border-strong, #3a3225);
  border-radius: var(--radius-sm, 4px);
  padding: 0.3rem 0.7rem;
  color: var(--accent, #5bb3a6);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.ms-quiz-prereq-btn:hover {
  border-color: var(--accent, #5bb3a6);
  color: var(--text, #e6dccb);
}

/* ── High-ceiling extension ──────────────────────────────────────────── */

.ms-quiz-high-ceiling {
  display: flex;
  gap: 0.5rem;
  align-items: baseline;
  margin-top: 0.75rem;
  padding: 0.6rem 0.85rem;
  background: var(--gold-soft, rgba(216,177,90,0.10));
  border-left: 3px solid var(--gold-line, rgba(216,177,90,0.38));
  border-radius: 0 var(--radius-sm, 4px) var(--radius-sm, 4px) 0;
  font-size: 0.875rem;
  color: var(--muted, #b3a892);
}
.ms-quiz-high-ceiling .ms-quiz-floor-label { color: var(--gold, #d8b15a); }

/* ── Navigation buttons ──────────────────────────────────────────────── */

.ms-quiz-next-btn {
  margin-top: 0.9rem;
  padding: 0.65rem 1.25rem;
  background: var(--teal, #5bb3a6);
  color: var(--bg, #15120e);
  border: none;
  border-radius: var(--radius-sm, 4px);
  font-family: var(--font-display, system-ui, sans-serif);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  width: 100%;
  transition: opacity 0.15s;
}
.ms-quiz-next-btn:hover { opacity: 0.88; }

/* ── Self-grade (short-answer fallback) ──────────────────────────────── */

.ms-quiz-self-grade {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border, #2c261c);
}
.ms-quiz-self-grade > span {
  font-size: 0.8125rem;
  color: var(--faint, #8a8068);
  font-family: var(--font-display, system-ui, sans-serif);
}
.ms-quiz-sg-yes,
.ms-quiz-sg-no {
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm, 4px);
  font-family: var(--font-display, system-ui, sans-serif);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: opacity 0.15s;
}
.ms-quiz-sg-yes { background: rgba(91,179,166,0.18); border-color: var(--teal, #5bb3a6); color: var(--teal, #5bb3a6); }
.ms-quiz-sg-no  { background: transparent; border-color: var(--border-strong, #3a3225); color: var(--muted, #b3a892); }
.ms-quiz-sg-yes:hover { opacity: 0.82; }
.ms-quiz-sg-no:hover  { border-color: var(--muted, #b3a892); }

/* ── Result card ─────────────────────────────────────────────────────── */

.ms-quiz-score {
  font-family: var(--font-display, system-ui, sans-serif);
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  color: var(--text, #e6dccb);
  margin-bottom: 0.25rem;
}

.ms-quiz-verdict {
  text-align: center;
  font-family: var(--font-display, system-ui, sans-serif);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.ms-quiz-verdict.passed   { color: var(--teal, #5bb3a6); }
.ms-quiz-verdict.try-again { color: var(--muted, #b3a892); }

.ms-quiz-lv-msg,
.ms-quiz-try-msg {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--muted, #b3a892);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.ms-quiz-done-btn,
.ms-quiz-retry-btn {
  display: block;
  width: 100%;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm, 4px);
  font-family: var(--font-display, system-ui, sans-serif);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  margin-bottom: 0.55rem;
  transition: opacity 0.15s;
  border: 1px solid transparent;
}
.ms-quiz-done-btn  { background: var(--teal, #5bb3a6); color: var(--bg, #15120e); border-color: var(--teal, #5bb3a6); }
.ms-quiz-retry-btn { background: transparent; border-color: var(--border-strong, #3a3225); color: var(--muted, #b3a892); }
.ms-quiz-done-btn:hover  { opacity: 0.88; }
.ms-quiz-retry-btn:hover { border-color: var(--muted, #b3a892); color: var(--text, #e6dccb); }

/* ── Level Up Quiz button in the node panel ──────────────────────────── */

.level-up-quiz-btn {
  margin-top: 0.75rem;
  padding: 0.55rem 1rem;
  background: transparent;
  border: 1px solid var(--gold, #d8b15a);
  border-radius: var(--radius-sm, 4px);
  color: var(--gold, #d8b15a);
  font-family: var(--font-display, system-ui, sans-serif);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  width: 100%;
  transition: background 0.15s, color 0.15s;
}
.level-up-quiz-btn:hover {
  background: var(--gold-soft, rgba(216,177,90,0.10));
  color: var(--text, #e6dccb);
}

/* ── Node-level indicator in the panel ───────────────────────────────── */

.node-level-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  background: var(--gold-soft, rgba(216,177,90,0.10));
  border: 1px solid var(--gold-line, rgba(216,177,90,0.38));
  border-radius: 3px;
  font-family: var(--font-display, system-ui, sans-serif);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gold, #d8b15a);
  letter-spacing: 0.04em;
}

/* ── Rich quiz content: LaTeX (MathJax), bullet lists, tables ─────────────
   Mirrors the lesson-page math/table handling so equations never force a
   horizontal scroll and inline math sits on the text baseline. */
.ms-quiz-q mjx-container,
.ms-quiz-choice mjx-container,
.ms-quiz-explain mjx-container,
.ms-quiz-low-floor mjx-container,
.ms-quiz-high-ceiling mjx-container,
.ms-quiz-result-text mjx-container { max-width: 100%; }
.ms-quiz-q mjx-container[display="true"],
.ms-quiz-explain mjx-container[display="true"] {
  overflow-x: auto; overflow-y: hidden; margin: 0.7rem 0; padding-bottom: 2px;
}
/* Inline MathJax inherits the surrounding colour instead of MathJax black. */
.ms-quiz-card mjx-container { color: inherit; }

.ms-rich-ul {
  margin: 0.4rem 0 0.4rem 0;
  padding-left: 1.2rem;
  list-style: disc;
}
.ms-rich-ul li { margin: 0.15rem 0; line-height: 1.5; }

.ms-rich-table {
  border-collapse: collapse;
  margin: 0.6rem 0;
  font-size: 0.9em;
  max-width: 100%;
}
.ms-rich-table th,
.ms-rich-table td {
  border: 1px solid var(--border-strong, #3a3225);
  padding: 0.35rem 0.6rem;
  text-align: left;
  font-variant-numeric: tabular-nums;
}
.ms-rich-table th {
  background: var(--surface-2, #241f17);
  font-weight: 700;
}
.ms-quiz-choice code,
.ms-quiz-q code,
.ms-quiz-explain code {
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.92em;
  background: var(--surface-2, #241f17);
  padding: 0.05em 0.3em;
  border-radius: 3px;
}