/* Navbar */

.navbar {
  display: none;
}
/* ── PAGE BACKGROUND: light blue-grey like reference ── */
body {
  background: #dce8f5;
  min-height: 100vh;
}

/* ══════════════════════════════════════
       STICKY TOP BAR  (progress + timer)
    ══════════════════════════════════════ */
.quiz-sticky-top {
  position: sticky;
  top: 0;
  /* top: var(--nav-h); */
  z-index: 100;
  background: #fff;
  box-shadow: 0 2px 12px rgba(26, 26, 62, 0.1);
}

/* Info row: back arrow | title | timer | quit */
.quiz-info-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  border-bottom: 1px solid #e5e7eb;
  flex-wrap: wrap;
}

.quiz-back-btn {
  color: #5c33f6;
  font-size: 1.15rem;
  line-height: 1;
  text-decoration: none;
  flex-shrink: 0;
  padding: 4px 6px;
  border-radius: 6px;
  transition: background 0.15s;
}

.quiz-back-btn:hover {
  background: rgba(92, 51, 246, 0.08);
}

.quiz-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.92rem;
  color: #1a1a3e;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Timer pill */
.quiz-timer-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #fff3f3;
  border: 1.5px solid #ffc5c5;
  border-radius: 100px;
  padding: 5px 14px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: #e53e3e;
  flex-shrink: 0;
  transition: background 0.3s;
}

.quiz-timer-pill.warning {
  background: #fff0f0;
  border-color: #ff4444;
  color: #cc0000;
  animation: timerPulse 1s ease-in-out infinite;
}

@keyframes timerPulse {
  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.04);
  }
}

.quiz-quit-btn {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  color: #e53e3e;
  background: rgba(229, 62, 62, 0.08);
  border: 1.5px solid rgba(229, 62, 62, 0.22);
  border-radius: 100px;
  padding: 5px 14px;
  transition: all 0.15s;
  flex-shrink: 0;
}

.quiz-quit-btn:hover {
  background: rgba(229, 62, 62, 0.16);
}

/* Progress bar row */
.quiz-progress-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 20px 10px;
}

.quiz-progress-track {
  flex: 1;
  height: 8px;
  background: #e5e7eb;
  border-radius: 100px;
  overflow: hidden;
}

.quiz-progress-bar {
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, #5c33f6, #7b5ff8);
  transition: width 0.5s ease;
}

.quiz-progress-label {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  color: #5c33f6;
  white-space: nowrap;
  flex-shrink: 0;
}

.quiz-progress-count {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.76rem;
  color: #6b7280;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ══════════════════════════════════════
       MAIN CONTENT AREA
    ══════════════════════════════════════ */
.quiz-body {
  max-width: 680px;
  margin: 0 auto;
  padding: 28px 16px 120px;
  /* bottom padding for fixed submit bar */
}

/* ══════════════════════════════════════
       WHITE CARD  (contains ALL questions)
    ══════════════════════════════════════ */
.quiz-card {
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 2px 16px rgba(26, 26, 62, 0.1);
  overflow: hidden;
}

/* ── COURSE HEADER strip inside card ── */
.quiz-card-header {
  background: #5c33f6;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.quiz-card-header-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.92rem;
  color: #fff;
}

.quiz-card-header-meta {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--font-display);
  font-weight: 600;
}

/* ══════════════════════════════════════
       INDIVIDUAL QUESTION BLOCK
       (matches reference exactly)
    ══════════════════════════════════════ */
.question-block {
  padding: 22px 28px;
  border-bottom: 1px solid #e5e7eb;
}

.question-block:last-of-type {
  border-bottom: none;
}

/* "Question N" label — blue, bold */
.q-label {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.92rem;
  color: #5c33f6;
  margin-bottom: 6px;
}

/* Question text */
.q-text {
  font-size: 0.93rem;
  color: #374151;
  line-height: 1.55;
  margin-bottom: 14px;
}

/* Options list — plain, like reference */
.q-options {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* Each option row */
.q-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 6px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.12s;
  user-select: none;
}

.q-option:hover {
  background: #f0edff;
}

/* Hide the real radio visually — we style the custom circle */
.q-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

/* Custom radio circle — unchecked: empty ring */
.q-radio {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid #9ca3af;
  background: #fff;
  flex-shrink: 0;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Checked state: filled blue with white inner dot */
.q-option input[type="radio"]:checked ~ .q-radio,
.q-option.selected .q-radio {
  background: #5c33f6;
  border-color: #5c33f6;
}

.q-option input[type="radio"]:checked ~ .q-radio::after,
.q-option.selected .q-radio::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
}

/* Option label text */
.q-option-text {
  font-size: 0.9rem;
  color: #374151;
  line-height: 1.4;
}

.q-option input[type="radio"]:checked ~ .q-option-text,
.q-option.selected .q-option-text {
  color: #5c33f6;
  font-weight: 600;
}

/* AI explain button per question */
.q-ai-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.78rem;
  color: #5c33f6;
  background: rgba(92, 51, 246, 0.07);
  border: 1.5px solid rgba(92, 51, 246, 0.18);
  border-radius: 100px;
  padding: 5px 12px;
  cursor: pointer;
  transition: background 0.15s;
}

.q-ai-btn:hover {
  background: rgba(92, 51, 246, 0.14);
}

/* ══════════════════════════════════════
       FIXED BOTTOM BAR  (Submit + stats)
    ══════════════════════════════════════ */
.quiz-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #fff;
  border-top: 1.5px solid #e5e7eb;
  box-shadow: 0 -4px 20px rgba(26, 26, 62, 0.1);
  z-index: 100;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.quiz-bottom-stats {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  flex: 1;
}

.bottom-stat {
  font-size: 0.78rem;
  color: #6b7280;
  display: flex;
  align-items: center;
  gap: 4px;
}

.bottom-stat strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: #1a1a3e;
}

/* Submit button */
.quiz-submit-btn {
  background: #5c33f6;
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  border-radius: 100px;
  padding: 11px 28px;
  border: none;
  cursor: pointer;
  transition: all 0.18s;
  flex-shrink: 0;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  box-shadow: 0 4px 14px rgba(92, 51, 246, 0.3);
}

.quiz-submit-btn:hover {
  background: #4220d4;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(92, 51, 246, 0.4);
}

.footer {
  display: none;
}

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
  .question-block {
    padding: 18px 16px;
  }

  .quiz-card-header {
    padding: 14px 16px;
  }

  .quiz-body {
    padding: 16px 10px 110px;
  }

  .quiz-info-row {
    padding: 8px 14px;
  }

  .quiz-progress-row {
    padding: 6px 14px 8px;
  }

  .quiz-title {
    font-size: 0.82rem;
  }

  .quiz-bottom-stats {
    gap: 10px;
  }

  .bottom-stat {
    font-size: 0.72rem;
  }

  .quiz-submit-btn {
    padding: 10px 20px;
    font-size: 0.88rem;
  }
}

@media (max-width: 400px) {
  .quiz-bottom-stats {
    display: none;
  }
}