/* ===== CSS 變數 ===== */
:root {
  --primary: #e85d04;
  --primary-dark: #c44d03;
  --primary-light: #fff3ed;
  --accent: #1a56db;
  --accent-dark: #1240ab;
  --accent-light: #e8f0fe;
  --success: #057a55;
  --success-light: #def7ec;
  --danger: #c81e1e;
  --danger-light: #fde8e8;
  --warning: #9f580a;
  --warning-light: #feecdc;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --bg: #f4f6f9;
  --card-bg: #fff;
  --header-bg: linear-gradient(135deg, #1a1f36 0%, #2d3561 100%);
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, .10);
  --shadow-lg: 0 10px 24px rgba(0, 0, 0, .12);
}

/* ===== 深色模式 ===== */
[data-theme="dark"] {
  --primary: #f4845f;
  --primary-dark: #e85d04;
  --primary-light: rgba(244, 132, 95, .12);
  --accent: #60a5fa;
  --accent-dark: #3b82f6;
  --accent-light: rgba(96, 165, 250, .12);
  --success: #34d399;
  --success-light: rgba(52, 211, 153, .12);
  --danger: #f87171;
  --danger-light: rgba(248, 113, 113, .12);
  --warning: #fbbf24;
  --warning-light: rgba(251, 191, 36, .12);
  --gray-50: #1e1e2e;
  --gray-100: #252536;
  --gray-200: #333348;
  --gray-300: #44445a;
  --gray-400: #6b6b80;
  --gray-500: #9ca3af;
  --gray-700: #d1d5db;
  --gray-800: #e5e7eb;
  --gray-900: #f3f4f6;
  --bg: #13131e;
  --card-bg: #1e1e2e;
  --header-bg: linear-gradient(135deg, #0f0f1a 0%, #1a1a30 100%);
  --shadow: 0 1px 3px rgba(0, 0, 0, .3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, .4);
  --shadow-lg: 0 10px 24px rgba(0, 0, 0, .5);
}

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

body {
  font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--gray-900);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color .25s, color .25s;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ===== Header ===== */
.site-header {
  background: var(--header-bg);
  color: #fff;
  padding: 0 24px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .2);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .inner {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  height: 64px;
}

.header-logo-wrap {
  flex-shrink: 0;
}

.header-logo-img {
  height: 40px;
  width: 40px;
  object-fit: contain;
  display: block;
  border-radius: 50%;
  transition: transform .2s;
}

.header-logo-img:hover {
  transform: scale(1.08);
}

.header-logo-svg {
  width: 22px;
  height: 22px;
  stroke: var(--primary);
}

.site-header h1 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .02em;
}

.header-sub {
  font-size: .75rem;
  opacity: .6;
  margin-top: 1px;
}

/* ===== Footer ===== */
.site-footer {
  text-align: center;
  padding: 24px 16px 32px;
  font-size: .78rem;
  color: var(--gray-400);
  line-height: 1.6;
}

.site-footer .footer-org {
  font-size: .82rem;
  color: var(--gray-500);
  font-weight: 500;
  margin-bottom: 4px;
}

.site-footer .footer-logo-img {
  height: 28px;
  width: auto;
  margin-bottom: 8px;
  opacity: .5;
  transition: opacity .2s;
}

.site-footer .footer-logo-img:hover {
  opacity: .8;
}

/* ===== Theme Toggle ===== */
.theme-toggle {
  margin-left: auto;
  background: rgba(255, 255, 255, .1);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all .2s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, .2);
  transform: scale(1.1);
}

/* ===== Main container ===== */
.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}

/* ===== Selector card ===== */
.selector-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 32px 28px;
  margin-bottom: 24px;
}

.selector-header {
  margin-bottom: 24px;
}

.selector-header h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.selector-header p {
  font-size: .92rem;
  color: var(--gray-500);
}

.selector-header p strong {
  color: var(--primary);
}

/* ===== Custom Select ===== */
.select-label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.custom-select-wrap {
  position: relative;
  margin-bottom: 12px;
}

.custom-select-wrap select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  background: var(--gray-50);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 12px 44px 12px 14px;
  font-size: .95rem;
  font-family: inherit;
  color: var(--gray-900);
  cursor: pointer;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}

.custom-select-wrap select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232, 93, 4, .12);
}

.custom-select-wrap select optgroup {
  font-weight: 700;
  color: var(--gray-700);
  background: var(--gray-100);
}

.custom-select-wrap select option {
  font-weight: 400;
  padding: 6px 12px;
}

.select-arrow {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  stroke: var(--gray-500);
  pointer-events: none;
}

.cat-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .875rem;
  color: var(--gray-500);
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  padding: 9px 14px;
  margin-bottom: 16px;
  border: 1px solid rgba(232, 93, 4, .15);
}

.cat-info svg {
  stroke: var(--primary);
  flex-shrink: 0;
}

.cat-info strong {
  color: var(--primary);
}

/* ===== Mode Selector ===== */
.mode-select {
  margin-bottom: 16px;
}

.mode-options {
  display: flex;
  gap: 10px;
}

.mode-radio {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 12px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--gray-50);
  transition: all .15s;
  text-align: center;
}

.mode-radio input {
  display: none;
}

.mode-radio:hover {
  border-color: var(--primary);
}

.mode-radio.active {
  border-color: var(--primary);
  background: var(--primary-light);
  box-shadow: 0 0 0 2px rgba(232, 93, 4, .15);
}

.mode-icon {
  font-size: 1.4rem;
}

.mode-label {
  font-size: .88rem;
  font-weight: 700;
  color: var(--gray-900);
}

.mode-desc {
  font-size: .75rem;
  color: var(--gray-500);
}

/* ===== Resume Banner ===== */
.resume-banner {
  background: var(--accent-light);
  border: 1.5px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 24px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  animation: slideDown .3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.resume-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.resume-info strong {
  font-size: .95rem;
  color: var(--accent);
}

.resume-info span {
  font-size: .82rem;
  color: var(--gray-500);
}

.resume-time {
  font-size: .75rem !important;
  color: var(--gray-400) !important;
}

.resume-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.btn-sm {
  padding: 6px 14px;
  font-size: .82rem;
}

/* ===== Buttons ===== */
.btn {
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .15s;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn:disabled {
  opacity: .4;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(232, 93, 4, .3);
}

.btn-outline {
  background: var(--card-bg);
  border: 1.5px solid var(--gray-300);
  color: var(--gray-700);
}

.btn-outline:hover:not(:disabled) {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-start {
  width: 100%;
  justify-content: center;
  padding: 14px;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  letter-spacing: .03em;
}

.btn-fullwidth {
  width: 100%;
  justify-content: center;
}

/* ===== Info cards ===== */
.info-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.info-card {
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
}

.info-icon {
  width: 38px;
  height: 38px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.info-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--primary);
}

.info-card strong {
  display: block;
  font-size: .88rem;
  font-weight: 700;
  color: var(--gray-900);
}

.info-card span {
  font-size: .78rem;
  color: var(--gray-500);
}

/* ===== Loading ===== */
.loading-inline {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--gray-500);
  font-size: .9rem;
  padding: 12px 0;
}

.spinner-sm {
  width: 18px;
  height: 18px;
  border: 2.5px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

.loading {
  text-align: center;
  padding: 80px 16px;
  color: var(--gray-500);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  margin: 0 auto 16px;
}

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

.error-msg {
  color: var(--danger);
  padding: 16px 0;
  font-size: .9rem;
  line-height: 1.7;
}

/* ===== Modal（須知 + 反饋） ===== */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 20, .55);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 16px;
  backdrop-filter: blur(2px);
}

.modal-backdrop.open {
  display: flex;
}

.modal {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 32px 28px;
  width: 100%;
  max-width: 480px;
  animation: modal-in .22s ease;
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: translateY(20px) scale(.97);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* 須知 Modal 特有 */
.notice-modal,
.preexam-modal {
  max-width: 500px;
}

.notice-icon {
  width: 52px;
  height: 52px;
  background: var(--accent-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.notice-icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--accent);
}

.notice-icon.warning {
  background: var(--warning-light);
}

.notice-icon.warning svg {
  stroke: var(--warning);
}

.notice-modal h2,
.preexam-modal h2 {
  font-size: 1.2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 20px;
}

.notice-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
  font-size: .88rem;
  color: var(--gray-700);
  line-height: 1.7;
  max-height: 50vh;
  overflow-y: auto;
  padding-right: 4px;
}

.notice-body p strong {
  color: var(--gray-900);
}

/* 反饋 Modal */
.modal h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.modal label {
  display: block;
  font-size: .88rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--gray-700);
}

.modal select,
.modal textarea {
  width: 100%;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  font-size: .9rem;
  font-family: inherit;
  margin-bottom: 14px;
  outline: none;
  transition: border-color .15s;
  appearance: none;
  background: var(--gray-50);
  color: var(--gray-900);
}

.modal select:focus,
.modal textarea:focus {
  border-color: var(--primary);
}

.modal textarea {
  resize: vertical;
  min-height: 80px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ===== Exam header ===== */
.exam-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--gray-200);
  padding: 10px 16px;
  position: sticky;
  top: 64px;
  z-index: 90;
  box-shadow: var(--shadow);
}

.exam-header .inner {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.exam-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  font-size: .85rem;
  color: var(--gray-500);
}

.exam-meta strong {
  color: var(--gray-900);
}

.progress-bar-wrap {
  flex: 1;
  min-width: 120px;
  background: var(--gray-200);
  border-radius: 99px;
  height: 6px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #f4a261);
  border-radius: 99px;
  transition: width .3s ease;
}

.btn-end-early {
  margin-left: auto;
  background: none;
  border: 1.5px solid var(--danger);
  color: var(--danger);
  border-radius: var(--radius-sm);
  padding: 5px 12px;
  font-size: .82rem;
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
  font-family: inherit;
}

.btn-end-early:hover {
  background: var(--danger);
  color: #fff;
}

/* ===== 題目導覽列 ===== */
.q-nav-wrap {
  background: var(--card-bg);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 108px;
  z-index: 85;
}

.q-nav {
  max-width: 880px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.q-nav-toggle {
  display: none;
  width: 100%;
  padding: 6px 16px;
  background: var(--card-bg);
  border: none;
  border-top: 1px solid var(--gray-200);
  color: var(--gray-500);
  font-size: .75rem;
  font-family: inherit;
  cursor: pointer;
  text-align: center;
  transition: color .15s;
}

.q-nav-toggle:hover {
  color: var(--primary);
}

.nav-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid var(--gray-300);
  background: var(--gray-50);
  color: var(--gray-500);
  font-size: .68rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  padding: 0;
  position: relative;
}

.nav-dot:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: scale(1.1);
}

.nav-dot.active {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
  box-shadow: 0 0 0 3px rgba(232, 93, 4, .2);
}

.nav-dot.answered {
  border-color: var(--success);
  background: var(--success-light);
  color: var(--success);
}

.nav-dot.hinted {
  border-color: var(--warning);
  background: var(--warning-light);
  color: var(--warning);
}

.nav-dot.bookmarked::after {
  content: "★";
  position: absolute;
  top: -4px;
  right: -4px;
  font-size: .55rem;
  color: #f59e0b;
  text-shadow: 0 0 2px rgba(0, 0, 0, .3);
}

.nav-dot.active.answered,
.nav-dot.active.hinted {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===== 題目卡片 ===== */
.question-wrap {
  max-width: 720px;
  margin: 28px auto;
  padding: 0 16px;
}

.question-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 28px 28px 20px;
  margin-bottom: 16px;
}

.q-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.q-number {
  font-size: .8rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: .05em;
}

.btn-bookmark {
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--gray-300);
  transition: all .2s;
  padding: 2px 6px;
  line-height: 1;
}

.btn-bookmark:hover,
.btn-bookmark.active {
  color: #f59e0b;
  transform: scale(1.2);
}

.q-text {
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.7;
  margin-bottom: 20px;
}

/* 選項 */
.options-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.option-btn {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  background: var(--gray-50);
  cursor: pointer;
  text-align: left;
  font-size: .95rem;
  line-height: 1.5;
  transition: all .15s;
  width: 100%;
  font-family: inherit;
  color: var(--gray-900);
}

.option-btn:hover:not(:disabled) {
  border-color: var(--primary);
  background: var(--primary-light);
}

.option-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--gray-200);
  border-radius: 50%;
  font-size: .8rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
  transition: all .15s;
}

.option-btn:hover:not(:disabled) .option-label {
  background: var(--primary);
  color: #fff;
}

.option-btn.selected {
  border-color: var(--primary);
  background: var(--primary-light);
}

.option-btn.selected .option-label {
  background: var(--primary);
  color: #fff;
}

.option-btn.correct {
  border-color: var(--success);
  background: var(--success-light);
}

.option-btn.correct .option-label {
  background: var(--success);
  color: #fff;
}

.option-btn.wrong {
  border-color: var(--danger);
  background: var(--danger-light);
}

.option-btn.wrong .option-label {
  background: var(--danger);
  color: #fff;
}

.option-btn.hint {
  border-color: var(--warning);
  background: var(--warning-light);
}

.option-btn.hint .option-label {
  background: var(--warning);
  color: #fff;
}

.option-btn:disabled {
  cursor: default;
  opacity: .85;
}

/* 提示文字 */
.answer-hint {
  margin-top: 10px;
  font-size: .85rem;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  display: none;
}

.answer-hint.show {
  display: block;
}

.answer-hint.correct {
  background: var(--success-light);
  color: var(--success);
}

.answer-hint.wrong {
  background: var(--danger-light);
  color: var(--danger);
}

.answer-hint.hint-only {
  background: var(--warning-light);
  color: var(--warning);
}

/* 操作列 */
.action-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  padding: 0 16px;
  max-width: 720px;
  margin: 0 auto 40px;
}

.btn-hint {
  background: var(--card-bg);
  border: 1.5px solid var(--warning);
  color: var(--warning);
}

.btn-hint:hover:not(:disabled) {
  background: var(--warning-light);
}

.btn-feedback {
  background: var(--card-bg);
  border: 1.5px solid var(--gray-300);
  color: var(--gray-500);
  font-size: .82rem;
  margin-left: auto;
}

.btn-feedback:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* ===== 成績頁 ===== */
.result-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 36px 28px;
  max-width: 680px;
  margin: 0 auto 28px;
  text-align: center;
}

.score-circle {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-weight: 700;
}

.score-circle.pass {
  background: var(--success-light);
  color: var(--success);
  border: 4px solid var(--success);
}

.score-circle.fail {
  background: var(--danger-light);
  color: var(--danger);
  border: 4px solid var(--danger);
}

.score-num {
  font-size: 2.4rem;
  line-height: 1;
}

.score-label {
  font-size: .75rem;
  margin-top: 2px;
}

.pass-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 99px;
  font-size: .85rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.pass-badge.pass {
  background: var(--success-light);
  color: var(--success);
}

.pass-badge.fail {
  background: var(--danger-light);
  color: var(--danger);
}

.stats-row {
  display: flex;
  justify-content: center;
  gap: 28px;
  font-size: .9rem;
  color: var(--gray-500);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.stats-row span strong {
  color: var(--gray-900);
}

.result-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 錯題列表 */
.wrong-list {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

.wrong-list h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.wrong-item {
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--danger-light);
  padding: 16px 18px;
  margin-bottom: 12px;
}

.wrong-item .wi-num {
  font-size: .8rem;
  color: var(--danger);
  font-weight: 700;
  margin-bottom: 6px;
}

.wrong-item .wi-q {
  font-size: .95rem;
  margin-bottom: 10px;
  line-height: 1.6;
}

.wrong-item .wi-meta {
  font-size: .82rem;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.wi-your {
  color: var(--danger);
}

.wi-correct {
  color: var(--success);
}

.wi-hinted {
  color: var(--warning);
  font-style: italic;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--gray-800);
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  z-index: 300;
  transition: transform .3s ease;
  pointer-events: none;
  white-space: nowrap;
}

[data-theme="dark"] .toast {
  background: var(--gray-100);
  color: var(--gray-900);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

/* ===== Timer ===== */
.timer {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--gray-800);
  color: #fff;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: .82rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

[data-theme="dark"] .timer {
  background: var(--gray-300);
}

.timer-warn {
  background: var(--danger) !important;
  animation: timer-pulse 1s ease-in-out infinite;
}

@keyframes timer-pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: .7;
  }
}

/* ===== No-Score Badge ===== */
.no-score-badge {
  background: var(--warning-light);
  color: var(--warning);
  font-size: .8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  display: inline-block;
}

/* ===== Review Button ===== */
.btn-review {
  background: var(--accent);
  color: #fff;
  border: none;
}

.btn-review:hover {
  background: var(--accent-dark);
}

/* ===== History Card ===== */
.history-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-top: 20px;
}

.history-card h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 14px;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.history-item {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  font-size: .85rem;
  border: 1px solid var(--gray-200);
  transition: all .15s;
}

.history-item.latest {
  background: var(--primary-light);
  border-color: rgba(232, 93, 4, .2);
}

.hi-cat {
  font-weight: 600;
  color: var(--gray-900);
}

.hi-badge {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: .7rem;
  padding: 1px 6px;
  border-radius: 99px;
  margin-left: 6px;
  vertical-align: middle;
}

.hi-badge.speed {
  background: var(--accent);
}

.hi-score {
  font-weight: 700;
  font-size: .9rem;
}

.hi-score.pass {
  color: var(--success);
}

.hi-score.fail {
  color: var(--danger);
}

.hi-detail {
  color: var(--gray-500);
  font-size: .8rem;
}

.hi-date {
  color: var(--gray-400);
  font-size: .78rem;
}

/* ===== RWD ===== */
@media (max-width: 600px) {
  .selector-card {
    padding: 24px 18px;
  }

  .info-cards {
    grid-template-columns: 1fr;
  }

  .question-card {
    padding: 20px 16px 16px;
  }

  .action-row {
    gap: 8px;
  }

  .btn {
    padding: 9px 14px;
    font-size: .85rem;
  }

  .score-circle {
    width: 110px;
    height: 110px;
  }

  .score-num {
    font-size: 2rem;
  }

  .modal {
    padding: 24px 18px;
  }

  .history-item {
    grid-template-columns: 1fr auto;
    gap: 6px;
  }

  .hi-detail,
  .hi-date {
    grid-column: 1 / -1;
  }

  .mode-options {
    flex-direction: column;
  }

  .q-nav-wrap {
    top: 100px;
  }

  .q-nav {
    gap: 3px;
    max-height: 30px;
    overflow: hidden;
    transition: max-height .25s ease;
  }

  .q-nav.expanded {
    max-height: 600px;
  }

  .q-nav-toggle {
    display: block;
  }

  .nav-dot {
    width: 24px;
    height: 24px;
    font-size: .6rem;
  }

  .resume-banner {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}