@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700;800&family=Poppins:wght@600;700&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-color: #b3e5fc;
  --sidebar-bg: #e8f8ff;
  --card-bg: #ffffff;
  --primary-green: #4caf50;
  --primary-blue: #1565c0;
  --accent-blue: #1d72ff;
  --text-main: #1a2a3a;
  --text-muted: #4a6070;
  --shadow: 0 4px 12px rgba(0,0,0,0.1);
  --border-radius: 16px;
  --card-border: 1px solid rgba(255,255,255,0.6);

  --danger: #e53935;
  --danger-light: #fde8e8;
  --success: #4caf50;
  --success-light: #e8f5e9;
  --border: rgba(21,101,192,0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

html, body {
  font-family: 'Nunito', sans-serif;
  background: #7ec8e3;
  min-height: 100vh;
  color: var(--text-main);
  line-height: 1.6;
  padding: 0 0 52px;
}

/* ─── PAGE TITLE HEADER ──────────────────────────── */

.page-header {
  background: linear-gradient(135deg, #0d47a1 0%, #1565c0 40%, #1976d2 100%);
  padding: 28px 40px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(13, 71, 161, 0.35);
  margin-bottom: 32px;
}

.page-title {
    color: #ffffff;
    font-size: 2.1rem;
    font-weight: 900;
    letter-spacing: -0.3px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.page-title {
  font-family: 'Poppins', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.2px;
  margin: 0;
}

/* ─── HIDE ───────────────────────────────────────── */
.hide {
  display: none !important;
}

/* ════════════════════════════════════════════════════
   SETTINGS CARD
════════════════════════════════════════════════════ */

.quiz-setting {
  max-width: 560px;
  margin: 0 auto;
  background: var(--card-bg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  border: var(--card-border);
  overflow: hidden;
  padding-bottom: 28px;
  margin-left: 16px;
  margin-right: 16px;
  margin-bottom: 24px;
}

@media (min-width: 600px) {
  .quiz-setting,
  .quiz-contents,
  .quiz-result,
  .quiz-score-show {
    margin-left: auto;
    margin-right: auto;
  }
}

.card-header {
  background: var(--primary-blue);
  padding: 26px 28px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-icon {
  font-size: 26px;
  line-height: 1;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.25));
}

.header-title {
  font-family: 'Poppins', sans-serif;
  font-size: 19px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.2px;
}

.settings-section {
  padding: 20px 28px 10px;
}

.settings-section h3 {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.1px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

hr {
  border: none;
  border-top: 1px solid rgba(21,101,192,0.12);
  margin: 4px 0 0;
}

/* ─── CHIP SELECTOR (question count) ────────────── */

.chip-container {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.chip-input {
  display: none;
}

.chip-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 22px;
  border-radius: 100px;
  border: 2px solid rgba(21,101,192,0.2);
  background: var(--sidebar-bg);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 700;
  font-family: 'Nunito', sans-serif;
  cursor: pointer;
  transition: all 0.18s ease;
  user-select: none;
}

.chip-label:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: #e8f0ff;
}

.chip-input:checked + .chip-label,
.chip-label.selected {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: #fff;
  box-shadow: 0 4px 14px rgba(29,114,255,0.35);
}

/* ─── CARD SELECTOR (idiom groups) ──────────────── */

.card-select-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 10px;
}

.selection-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 14px 10px;
  border-radius: var(--radius-md);
  border: 2px solid rgba(21,101,192,0.18);
  background: var(--sidebar-bg);
  cursor: pointer;
  transition: all 0.18s ease;
  text-align: center;
}

.selection-card:hover {
  border-color: var(--accent-blue);
  background: #e8f0ff;
}

.selection-card.selected,
.selection-card:has(.card-input:checked) {
  border-color: var(--accent-blue);
  background: #ddeeff;
  box-shadow: 0 4px 12px rgba(29,114,255,0.2);
}

.card-input {
  display: none;
}

.card-number {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  transition: color 0.18s;
}

.selection-card.selected .card-number,
.selection-card:has(.card-input:checked) .card-number {
  color: var(--primary-blue);
}

/* ─── START BUTTON ───────────────────────────────── */

.start-button {
  display: block;
  margin: 24px 28px 0;
  width: calc(100% - 56px);
  padding: 15px 24px;
  background: var(--primary-green);
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.6px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
  box-shadow: 0 6px 18px rgba(76,175,80,0.4);
}

.start-button:hover {
  background: #43a047;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(76,175,80,0.45);
}

.start-button:active {
  transform: translateY(0);
  box-shadow: 0 4px 10px rgba(76,175,80,0.35);
}

/* ════════════════════════════════════════════════════
   QUIZ CONTENT WRAPPER
════════════════════════════════════════════════════ */

.quiz-contents {
  max-width: 560px;
  margin: 0 16px;
  padding-bottom: 24px;
}

@media (min-width: 600px) {
  .quiz-contents {
    margin: 0 auto;
  }
}

/* ─── LOADING SPINNER ────────────────────────────── */

.spinner-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  gap: 16px;
  color: var(--primary-blue);
  font-weight: 700;
  font-size: 15px;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(21,101,192,0.15);
  border-top-color: var(--primary-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ─── QUIZ CONTAINER ─────────────────────────────── */

.quiz-container {
  background: var(--card-bg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  border: var(--card-border);
  overflow: hidden;
}

.quiz-img-container {
  width: 100%;
  background: var(--sidebar-bg);
  border-bottom: 1px solid rgba(21,101,192,0.1);
}

.quiz-img-container img {
  width: 100%;
  max-height: 360px;
  object-fit: contain;
  display: block;
}

.quiz-img-container img:not([src]),
.quiz-img-container img[src=''] {
  display: none;
}

.quiz-box {
  padding: 24px;
}

.quiz-body {
  min-height: 120px;
}

#questionContent {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 20px;
}

#questionOptions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

#questionOptions div {
  display: flex;
  align-items: center;
  gap: 12px;
}

#questionOptions input[type="radio"] {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  accent-color: var(--accent-blue);
  cursor: pointer;
}

#questionOptions label {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  line-height: 1.4;
}

#questionOptions button,
#questionOptions .option {
  width: 100%;
  text-align: left;
  padding: 13px 18px;
  border-radius: var(--radius-md);
  border: 2px solid rgba(21,101,192,0.15);
  background: var(--sidebar-bg);
  font-family: 'Nunito', sans-serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.15s ease;
}

#questionOptions button:hover,
#questionOptions .option:hover {
  border-color: var(--accent-blue);
  background: #e8f0ff;
  color: var(--primary-blue);
}

#questionOptions button.correct,
#questionOptions .option.correct {
  border-color: var(--primary-green);
  background: var(--success-light);
  color: #1b5e20;
}

#questionOptions button.wrong,
#questionOptions .option.wrong {
  border-color: var(--danger);
  background: var(--danger-light);
  color: #b71c1c;
}

/* ─── QUIZ FOOTER ────────────────────────────────── */

.quiz-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(21,101,192,0.1);
}

#questionCount {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.4px;
}

.Question-bnt {
  display: flex;
  gap: 8px;
  align-items: center;
}

.small-bnt {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid rgba(21,101,192,0.18);
  background: var(--sidebar-bg);
  color: var(--primary-blue);
  font-size: 15px;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.small-bnt:hover {
  border-color: var(--accent-blue);
  background: var(--accent-blue);
  color: #fff;
}

/* ════════════════════════════════════════════════════
   RESULT SCREEN
════════════════════════════════════════════════════ */

.quiz-result {
  max-width: 560px;
  margin: 0 16px;
  background: var(--card-bg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  border: var(--card-border);
  padding: 40px 32px;
  text-align: center;
}

@media (min-width: 600px) {
  .quiz-result {
    margin: 0 auto;
  }
}

.quiz-result .icon {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin-bottom: 24px;
}

.quiz-result-show .row-1 {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.7;
}

#result-score {
  font-family: 'Poppins', sans-serif;
  font-size: 54px;
  font-weight: 700;
  color: var(--primary-blue);
  line-height: 1;
  margin-bottom: 28px;
}

.bnt-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.bnt-group .start-button {
  margin: 0;
  width: auto;
  padding: 13px 28px;
}

.bnt-group .start-button:last-child {
  background: var(--sidebar-bg);
  color: var(--primary-blue);
  box-shadow: none;
  border: 2px solid rgba(21,101,192,0.25);
}

.bnt-group .start-button:last-child:hover {
  background: #ddeeff;
  box-shadow: none;
  transform: translateY(-2px);
}

/* ════════════════════════════════════════════════════
   SCORE DETAIL SCREEN
════════════════════════════════════════════════════ */

.quiz-score-show {
  max-width: 560px;
  margin: 0 16px;
  background: var(--card-bg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  border: var(--card-border);
  padding: 32px 28px 28px;
}

@media (min-width: 600px) {
  .quiz-score-show {
    margin: 0 auto;
  }
}

.score-analysis {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.detail-box {
  background: var(--sidebar-bg);
  border-radius: var(--radius-md);
  border: 1.5px solid rgba(21,101,192,0.15);
  padding: 20px 12px;
  text-align: center;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.detail-box div:first-child {
  font-family: 'Poppins', sans-serif;
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 6px;
}

#correctAnswer {
  color: var(--primary-green) !important;
}

#incorrectAnswer {
  color: var(--danger) !important;
}

#score-analysis-table {
  margin-bottom: 24px;
}

#score-analysis-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

#score-analysis-table th {
  background: var(--sidebar-bg);
  padding: 10px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.9px;
  color: var(--text-muted);
  border-bottom: 2px solid rgba(21,101,192,0.12);
}

#score-analysis-table td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(21,101,192,0.08);
  color: var(--text-main);
  vertical-align: top;
}

#score-analysis-table tr:last-child td {
  border-bottom: none;
}

.quiz-score-show > .start-button {
  margin: 0;
  width: 100%;
}

/* ─── RESPONSIVE ─────────────────────────────────── */

@media (max-width: 480px) {
  .page-title {
    font-size: 18px;
    padding: 18px 16px;
  }
  .card-header {
    padding: 20px 20px 18px;
  }
  .settings-section {
    padding: 16px 20px 8px;
  }
  .start-button {
    margin: 18px 20px 0;
    width: calc(100% - 40px);
  }
  .quiz-box {
    padding: 18px;
  }
  #result-score {
    font-size: 44px;
  }
}