/*
 * quiz.css — owned by the Quiz route agent.
 *
 * Scope: styling for js/quiz.js's rendered markup (the #app-main content
 * when the route is "quiz" — data-route="quiz"), plus its module-level
 * bus-delegated sessions (today.js embeds a pretest/mixed session directly
 * into #/today's DOM via cms.bus "quiz:pretest"/"quiz:mixed" — that markup
 * carries the exact same classes and is styled by this file too).
 *
 * Phase 2b restyle: quiz.js's markup now uses DESIGN.md's component
 * vocabulary directly (.card, .btn/.btn--*, .badge, .chip, .seg-toggle,
 * .progress-bar, .bar-list/.bar-row, .form-row, .collapsible-card) — this
 * file only adds the quiz-specific structural/layout rules and a handful
 * of small button/component variants built from the SAME tokens (no new
 * hex colors, no purple). quiz.js's old injected <style id="quiz-js-styles">
 * block (dark-theme, legacy variable names) is now a no-op; every rule
 * that mattered has been ported here against the new --garnet-star, --gold-star,
 * --sage-star, --ink-star tokens.
 *
 * This file loads after app.css and dashboard.css, before pages.css (see
 * index.html's <link> order), so it can override shared component
 * defaults for quiz-specific needs.
 */

/* ── page shell ────────────────────────────────────────────────────────── */

.quiz-wrap {
  max-width: 720px;
  margin: 0 auto;
}

.quiz-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}

.quiz-head h1 {
  font-size: var(--text-2xl);
  margin: 0;
}

.qz-progress {
  margin-bottom: var(--space-4);
}

/* ── "Study what you want" custom builder card ────────────────────────── */

.qz-custom-card {
  border: 1px solid var(--garnet-100);
}

.qz-custom-lede {
  margin-top: calc(-1 * var(--space-2));
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
}

.qz-topic-search-row {
  margin-bottom: var(--space-3);
}

.qz-topic-search-row label {
  flex: 1;
  min-width: 200px;
}

.qz-topic-search {
  width: 100%;
  box-sizing: border-box;
}

.qz-topic-groups {
  max-height: 260px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--color-surface-sunken);
  padding: var(--space-3);
  margin-bottom: var(--space-3);
}

.qz-topic-group {
  margin-bottom: var(--space-3);
}

.qz-topic-group:last-child {
  margin-bottom: 0;
}

.qz-topic-group__label {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-500);
}

.qz-topic-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.qz-topic-chip {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-strong);
  background: var(--color-surface);
  color: var(--ink-700);
  font-family: inherit;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 5px 12px;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.qz-topic-chip:hover {
  border-color: var(--garnet-600);
}

.qz-topic-chip.is-active {
  background: var(--garnet-600);
  border-color: var(--garnet-600);
  color: #fff;
}

.qz-topic-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.qz-topic-selected-count {
  font-size: var(--text-xs);
}

.qz-control-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}

.qz-control-label {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--ink-700);
  min-width: 80px;
}

.qz-custom-count-input {
  width: 5.5rem;
}

.qz-custom-start {
  margin-top: var(--space-1);
}

/* ── unfinished-session / reactivation-due banners ────────────────────── */

.qz-banner {
  background: var(--gold-100);
  border: 1px solid var(--gold-500);
  border-left: 4px solid var(--gold-500);
}

.qz-banner p {
  margin: 0 0 var(--space-2);
  color: var(--ink-900);
  font-size: var(--text-sm);
}

.qz-banner .btn-row {
  margin-top: 0;
}

/* ── mode picker grid ─────────────────────────────────────────────────── */

.qz-mode-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin: var(--space-4) 0;
}

@media (min-width: 560px) {
  .qz-mode-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.qz-mode-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  text-align: left;
  background: var(--color-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-4);
  font-family: inherit;
  cursor: pointer;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.qz-mode-card:hover {
  border-color: var(--garnet-600);
  box-shadow: var(--shadow);
  transform: translateY(-1px);
}

.qz-mode-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--ink-900);
}

.qz-mode-card__desc {
  font-size: var(--text-sm);
  color: var(--ink-500);
}

/* ── question panel ───────────────────────────────────────────────────── */

.q-panel {
  /* .card already supplies background/border/radius/shadow/padding */
}

.q-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  color: var(--ink-500);
  font-size: var(--text-xs);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.q-counter {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.q-stem {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--ink-900);
  margin: 0 0 var(--space-4);
  line-height: 1.4;
}

.q-explain {
  font-size: var(--text-sm);
  color: var(--ink-700);
  background: var(--color-surface-sunken);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  margin: var(--space-3) 0;
}

.kbd-hint {
  font-size: var(--text-xs);
  margin-top: var(--space-3);
}

/* ── MCQ choices as tappable cards ────────────────────────────────────── */

.qz-choice-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.qz-choice-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  text-align: left;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: var(--color-surface);
  color: var(--ink-900);
  font-family: inherit;
  font-size: var(--text-base);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  box-sizing: border-box;
}

.qz-choice-btn:hover:not([disabled]) {
  border-color: var(--garnet-600);
  box-shadow: var(--shadow);
  transform: translateY(-1px);
}

.qz-choice-btn:focus-visible {
  outline: 2px solid var(--garnet-700);
  outline-offset: 2px;
}

.qz-choice-key {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6em;
  height: 1.6em;
  border-radius: 50%;
  background: var(--color-surface-2);
  color: var(--ink-500);
  font-size: var(--text-sm);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.qz-choice-text {
  flex: 1;
}

.qz-choice-btn.is-correct {
  border-color: var(--sage-500);
  background: var(--sage-100);
}

.qz-choice-btn.is-correct .qz-choice-key {
  background: var(--sage-500);
  color: #fff;
}

.qz-choice-btn.is-incorrect {
  border-color: var(--danger-600);
  background: var(--danger-100);
}

.qz-choice-btn.is-incorrect .qz-choice-key {
  background: var(--danger-600);
  color: #fff;
}

.qz-choice-btn[disabled] {
  cursor: default;
}

.qz-choice-btn[disabled]:hover {
  transform: none;
}

/* ── short-answer / recall ─────────────────────────────────────────────── */

.qz-recall-box textarea {
  width: 100%;
  min-height: 6rem;
  box-sizing: border-box;
  margin-bottom: var(--space-3);
  resize: vertical;
}

.qz-answer-reveal {
  background: var(--color-surface-sunken);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  margin: var(--space-3) 0;
}

.qz-answer-reveal__label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-500);
  margin-bottom: 2px;
}

.self-grade-row {
  display: flex;
  gap: var(--space-2);
  margin: var(--space-3) 0;
  flex-wrap: wrap;
}

.btn-row {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-4);
  flex-wrap: wrap;
}

/* ── extra button variants (existing tokens only, no new colors) ─────── */

.btn.btn--success {
  background: var(--sage-100);
  border-color: var(--sage-100);
  color: var(--sage-700);
}

.btn.btn--success:hover {
  background: var(--sage-700);
  border-color: var(--sage-700);
  color: #fff;
}

/* ── flag (⚑) corrections button ──────────────────────────────────────── */

.qz-flag-wrap {
  margin-top: var(--space-3);
}

.qz-flag-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--ink-500);
  cursor: pointer;
  padding: 3px 10px;
  font-size: var(--text-xs);
  font-family: inherit;
}

.qz-flag-btn:hover {
  color: var(--garnet-700);
  border-color: var(--garnet-600);
}

.qz-flag-form {
  display: none;
  gap: var(--space-2);
  margin-top: var(--space-2);
  flex-wrap: wrap;
}

.qz-flag-form.is-open {
  display: flex;
}

.qz-flag-form input {
  flex: 1;
  min-width: 10rem;
}

/* ── summary screen ────────────────────────────────────────────────────── */

.qz-summary-head {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.qz-summary-ring {
  flex: 0 0 auto;
  line-height: 0;
}

.qz-summary-head__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  align-items: flex-start;
}

.summary-score {
  font-size: var(--text-stat);
  font-weight: 800;
  color: var(--ink-900);
  line-height: 1.1;
}

.summary-sub {
  font-size: var(--text-sm);
}

.qz-topic-bars {
  margin-bottom: var(--space-4);
}

.qz-breakdown {
  margin-bottom: 0;
  box-shadow: none;
  background: var(--color-surface-2);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--border);
  font-size: var(--text-sm);
  flex-wrap: wrap;
}

.summary-row:last-child {
  border-bottom: none;
}

/* ── responsive tweaks ─────────────────────────────────────────────────── */

@media (max-width: 480px) {
  .q-stem {
    font-size: var(--text-lg);
  }

  .qz-control-label {
    min-width: 100%;
  }

  .qz-summary-head {
    flex-direction: column;
    align-items: flex-start;
  }
}