/* ============================================================
   quizzes.css
   ------------------------------------------------------------
   Styles for:
     • Admin quiz builder (.quizzes-panel, .qz-*)
     • Student quiz player (.quiz-list-*, .quiz-overlay, .quiz-dialog,
       .quiz-q__*, .quiz-choice, .quiz-result__*)
   ============================================================ */

/* ==================== Admin: Quizzes list ==================== */

.quizzes-panel {
  display: grid;
  gap: var(--space-4, 1rem);
}

.qz-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: var(--space-3, 0.75rem);
}
.qz-toolbar__label {
  display: grid;
  gap: 0.25rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted, #6b7280);
  font-weight: 600;
  flex: 0 1 22rem;
}
.qz-toolbar__label .input {
  height: 2.25rem;
  padding: 0 0.625rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-sm, 6px);
  background: var(--color-surface, #fff);
  font-size: 0.875rem;
}

.qz-list { display: grid; gap: var(--space-3, 0.75rem); }
.qz-empty {
  padding: var(--space-5, 1.5rem);
  text-align: center;
  color: var(--color-text-muted, #6b7280);
  font-style: italic;
  border: 1px dashed var(--color-border, #e5e7eb);
  border-radius: var(--radius-md, 10px);
  background: var(--color-surface-alt, #fafbfc);
}

.qz-card {
  display: grid;
  gap: var(--space-2, 0.5rem);
  padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-md, 10px);
  background: var(--color-surface, #fff);
}
.qz-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3, 0.75rem);
}
.qz-card__title { margin: 0; font-size: 1rem; font-weight: 600; }
.qz-card__badge {
  display: inline-flex;
  align-items: center;
  height: 1.5rem;
  padding: 0 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
}
.qz-card__badge.is-published {
  background: rgba(34, 197, 94, 0.12);
  color: #15803d;
}
.qz-card__badge.is-draft {
  background: var(--color-surface-alt, #f3f4f6);
  color: var(--color-text-muted, #6b7280);
}
.qz-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3, 0.75rem);
  font-size: 0.8125rem;
  color: var(--color-text-muted, #6b7280);
}
.qz-card__flag { color: var(--color-accent, #4a5cdb); font-weight: 600; }
.qz-card__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
  white-space: pre-wrap;
  color: var(--color-text, #111827);
}
.qz-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2, 0.5rem);
  border-top: 1px solid var(--color-border, #e5e7eb);
  padding-top: var(--space-2, 0.5rem);
}

/* ==================== Admin: Dialog ==================== */

.qz-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.48);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3, 0.75rem);
  z-index: 60;
}
.qz-dialog {
  background: var(--color-surface, #fff);
  color: var(--color-text, #111827);
  width: min(720px, 100%);
  max-height: min(92vh, 900px);
  border-radius: var(--radius-lg, 14px);
  box-shadow: 0 24px 64px rgba(15, 23, 42, 0.32);
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
}
.qz-dialog--wide {
  width: min(960px, 100%);
  grid-template-rows: auto 1fr;
}
.qz-dialog__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
  border-bottom: 1px solid var(--color-border, #e5e7eb);
}
.qz-dialog__title {
  margin: 0; font-size: 1.0625rem; font-weight: 600;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.qz-dialog__close {
  background: transparent; border: none; font-size: 1.5rem;
  line-height: 1; cursor: pointer; color: var(--color-text-muted, #6b7280);
  padding: 0.25rem 0.5rem; border-radius: var(--radius-sm, 6px);
}
.qz-dialog__close:hover { background: var(--color-surface-alt, #f3f4f6); }
.qz-dialog__body {
  overflow: auto;
  padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
  display: grid; gap: var(--space-3, 0.75rem);
}
.qz-dialog__row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: var(--space-3, 0.75rem);
}
.qz-dialog__textarea {
  min-height: 4rem;
  padding: 0.5rem 0.625rem;
  font-family: inherit; font-size: 0.875rem; line-height: 1.5; resize: vertical;
}
.qz-dialog__foot {
  display: flex; justify-content: flex-end;
  gap: var(--space-2, 0.5rem);
  padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
  border-top: 1px solid var(--color-border, #e5e7eb);
  background: var(--color-surface-alt, #fafbfc);
}
.qz-dialog__body .field { display: grid; gap: 0.25rem; }
.qz-dialog__body .field__label {
  font-size: 0.8125rem; font-weight: 600; color: var(--color-text-muted, #6b7280);
}
.qz-dialog__body .field--inline {
  display: flex; flex-direction: row; align-items: center;
  gap: 0.5rem; font-size: 0.875rem; color: var(--color-text); font-weight: 500;
}
.qz-dialog__body .input {
  height: 2.25rem; padding: 0 0.625rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-sm, 6px);
  background: var(--color-surface, #fff); font-size: 0.875rem;
}

/* ==================== Admin: Question builder ==================== */

.qz-builder__list { display: grid; gap: var(--space-3, 0.75rem); }
.qz-builder__addbar {
  display: flex; flex-wrap: wrap; gap: var(--space-2, 0.5rem);
  padding-top: var(--space-2, 0.5rem);
  border-top: 1px dashed var(--color-border, #e5e7eb);
}

.qz-q {
  display: grid;
  gap: 0.5rem;
  padding: var(--space-3, 0.75rem);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-md, 10px);
  background: var(--color-surface-alt, #fafbfc);
}
.qz-q__head {
  display: flex; align-items: center; gap: 0.5rem;
}
.qz-q__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2rem; height: 2rem;
  background: var(--color-accent, #4a5cdb);
  color: #fff; border-radius: 999px;
  font-size: 0.8125rem; font-weight: 700;
}
.qz-q__kind {
  padding: 0 0.5rem; height: 1.5rem; display: inline-flex; align-items: center;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 999px; font-size: 0.75rem; color: var(--color-text-muted);
}
.qz-q__head-actions {
  display: flex; gap: 0.25rem; margin-left: auto;
}
.qz-q__prompt {
  width: 100%;
  padding: 0.5rem 0.625rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-sm, 6px);
  background: var(--color-surface, #fff);
  font-family: inherit; font-size: 0.9375rem; line-height: 1.5; resize: vertical;
}

.qz-choices { display: grid; gap: 0.375rem; }
.qz-choice {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.5rem;
  align-items: center;
}
.qz-choice .input {
  height: 2rem; padding: 0 0.5rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-sm, 6px);
  background: var(--color-surface, #fff);
  font-size: 0.875rem;
}

.qz-q__answer { display: grid; gap: 0.25rem; font-size: 0.8125rem; color: var(--color-text-muted); font-weight: 600; }
.qz-q__answer .input {
  height: 2rem; padding: 0 0.5rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-sm, 6px);
  background: var(--color-surface, #fff);
  font-size: 0.875rem;
}

.qz-order { display: grid; gap: 0.375rem; }
.qz-order__hint { margin: 0; font-size: 0.75rem; color: var(--color-text-muted); }
.qz-order__row {
  display: grid;
  grid-template-columns: 2rem 1fr auto auto auto;
  align-items: center;
  gap: 0.375rem;
}
.qz-order__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 1.75rem; height: 1.75rem;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 999px;
  font-size: 0.75rem; font-weight: 700;
}

.qz-q__tail {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 0.5rem;
  align-items: end;
}
.qz-q__tail-label {
  display: grid;
  gap: 0.125rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.qz-q__tail-label--grow { min-width: 0; }
.qz-q__tail-label .input {
  height: 2rem; padding: 0 0.5rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-sm, 6px);
  background: var(--color-surface, #fff);
  font-size: 0.875rem;
}
.qz-q__weight { text-align: right; }

/* ==================== Student: Quiz list ==================== */

.quiz-list-panel { display: grid; gap: var(--space-3, 0.75rem); }
.quiz-list-panel__title {
  margin: 0 0 var(--space-2, 0.5rem);
  font-size: 1.125rem;
  font-weight: 700;
}
.quiz-empty {
  padding: var(--space-4, 1rem);
  color: var(--color-text-muted);
  border: 1px dashed var(--color-border, #e5e7eb);
  border-radius: var(--radius-md, 10px);
  background: var(--color-surface-alt, #fafbfc);
  font-style: italic;
  text-align: center;
}

.quiz-list { display: grid; gap: var(--space-3, 0.75rem); }

.quiz-list-item {
  display: grid; gap: var(--space-2, 0.5rem);
  padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-md, 10px);
  background: var(--color-surface, #fff);
}
.quiz-list-item__head {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-3, 0.75rem);
}
.quiz-list-item__title { margin: 0; font-size: 1rem; font-weight: 600; }
.quiz-list-item__badge {
  padding: 0 0.6rem; height: 1.5rem;
  display: inline-flex; align-items: center;
  border-radius: 999px;
  font-size: 0.75rem; font-weight: 700;
}
.quiz-list-item__badge.is-pass {
  background: rgba(34, 197, 94, 0.12); color: #15803d;
}
.quiz-list-item__badge.is-fail {
  background: rgba(239, 68, 68, 0.12); color: #b91c1c;
}
.quiz-list-item__desc { margin: 0; font-size: 0.875rem; color: var(--color-text); line-height: 1.5; }
.quiz-list-item__meta {
  display: flex; flex-wrap: wrap; gap: var(--space-3, 0.75rem);
  font-size: 0.8125rem; color: var(--color-text-muted);
}
.quiz-list-item__actions {
  display: flex; align-items: center; gap: var(--space-2, 0.5rem);
  flex-wrap: wrap;
}
.quiz-list-item__note {
  color: var(--color-text-muted); font-size: 0.8125rem; font-style: italic;
}

/* ==================== Student: Quiz player dialog ==================== */

.quiz-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.52);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3, 0.75rem);
  z-index: 70;
}
.quiz-dialog {
  background: var(--color-surface, #fff);
  color: var(--color-text, #111827);
  width: min(760px, 100%);
  max-height: min(94vh, 900px);
  border-radius: var(--radius-lg, 14px);
  box-shadow: 0 24px 64px rgba(15, 23, 42, 0.38);
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
}
.quiz-dialog__head {
  display: flex; align-items: center; gap: 0.75rem;
  padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
  border-bottom: 1px solid var(--color-border, #e5e7eb);
}
.quiz-dialog__title {
  margin: 0; font-size: 1.0625rem; font-weight: 700; flex: 1 1 auto;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.quiz-dialog__timer {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9375rem;
  color: var(--color-accent, #4a5cdb);
  font-weight: 700;
}
.quiz-dialog__close {
  background: transparent; border: none; font-size: 1.5rem;
  line-height: 1; cursor: pointer; color: var(--color-text-muted);
  padding: 0.25rem 0.5rem; border-radius: var(--radius-sm, 6px);
}
.quiz-dialog__body {
  overflow: auto;
  padding: var(--space-4, 1rem);
  display: grid; gap: var(--space-4, 1rem);
}
.quiz-dialog__foot {
  display: flex; justify-content: flex-end;
  gap: var(--space-2, 0.5rem);
  padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
  border-top: 1px solid var(--color-border, #e5e7eb);
  background: var(--color-surface-alt, #fafbfc);
}

/* Question block (both player + result) */
.quiz-q {
  display: grid; gap: 0.5rem;
  padding: var(--space-3, 0.75rem);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-md, 10px);
  background: var(--color-surface, #fff);
}
.quiz-q__head { display: flex; align-items: flex-start; gap: 0.5rem; }
.quiz-q__prompt {
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-text);
  flex: 1 1 auto;
}
.quiz-q__choices { display: grid; gap: 0.375rem; }
.quiz-choice {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-sm, 6px);
  background: var(--color-surface, #fff);
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease;
}
.quiz-choice:hover {
  border-color: var(--color-accent, #4a5cdb);
  background: var(--color-accent-soft, #eef1ff);
}
.quiz-choice input { margin: 0; accent-color: var(--color-accent, #4a5cdb); }

.quiz-q__text {
  width: 100%;
  height: 2.5rem;
  padding: 0 0.75rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-sm, 6px);
  background: var(--color-surface, #fff);
  font-size: 0.9375rem;
}

.quiz-q__order-list {
  list-style: none;
  padding: 0; margin: 0;
  display: grid; gap: 0.375rem;
}
.quiz-q__order-item {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-sm, 6px);
  background: var(--color-surface, #fff);
}
.quiz-q__order-label { flex: 1 1 auto; font-size: 0.9375rem; }
.quiz-q__order-controls { display: flex; gap: 0.25rem; }

/* Result view */
.quiz-result { display: grid; gap: var(--space-4, 1rem); }
.quiz-result__headline {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 800;
  text-align: center;
  padding: var(--space-3, 0.75rem);
  border-radius: var(--radius-md, 10px);
}
.quiz-result__headline.is-pass {
  background: rgba(34, 197, 94, 0.12);
  color: #15803d;
}
.quiz-result__headline.is-fail {
  background: rgba(239, 68, 68, 0.12);
  color: #b91c1c;
}
.quiz-result__score { text-align: center; margin: 0; font-weight: 600; }
.quiz-result__note { text-align: center; color: var(--color-text-muted); margin: 0; font-style: italic; }
.quiz-result__feedback { display: grid; gap: var(--space-3, 0.75rem); }
.quiz-result__q {
  display: grid; gap: 0.5rem;
  padding: var(--space-3, 0.75rem);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-md, 10px);
  background: var(--color-surface-alt, #fafbfc);
}
.quiz-result__ans { display: grid; gap: 0.25rem; font-size: 0.875rem; }
.quiz-result__choice {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm, 6px);
  color: var(--color-text-muted);
}
.quiz-result__choice.is-correct {
  background: rgba(34, 197, 94, 0.12);
  color: #15803d;
  font-weight: 600;
}
.quiz-result__choice.is-picked:not(.is-correct) {
  background: rgba(239, 68, 68, 0.12);
  color: #b91c1c;
  font-weight: 600;
}
.quiz-result__icon { width: 1.25rem; display: inline-block; text-align: center; font-weight: 700; }
.quiz-result__correct-text { margin: 0.25rem 0 0; color: #15803d; font-weight: 600; }
.quiz-result__explain {
  margin: 0.25rem 0 0;
  padding: 0.5rem 0.75rem;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-sm, 6px);
  font-size: 0.875rem;
  color: var(--color-text);
}

/* ── Narrow screens ─────────────────────────────────────── */
@media (max-width: 720px) {
  .qz-dialog__row { grid-template-columns: 1fr; }
  .qz-q__tail { grid-template-columns: 1fr; }
  .qz-order__row { grid-template-columns: 1.75rem 1fr auto auto auto; }
  .quiz-list-item__head { flex-direction: column; align-items: flex-start; }
}