/* ===== Page-Specific Styles ===== */

/* Home Page */
.home-banner {
  background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  box-shadow: 0 4px 12px rgba(59,130,246,0.25);
}
.banner-icon {
  width: 64px;
  height: 64px;
  background: rgba(255,255,255,0.15);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.banner-text h2 {
  font-size: 17px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 4px;
}
.banner-text p {
  font-size: 13px;
  color: rgba(255,255,255,0.75);
}

.home-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 14px 8px;
  text-align: center;
  box-shadow: var(--shadow);
}
.stat-num {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
}
.stat-label {
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 2px;
}

.home-progress {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.progress-header {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--gray-600);
  margin-bottom: 10px;
  font-weight: 500;
}
.progress-header span:last-child { color: var(--primary); font-weight: 600; }

.home-menu {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--gray-100);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.menu-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: var(--white);
  cursor: pointer;
  transition: background 0.1s;
}
.menu-item:active { background: var(--gray-50); }
.menu-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.menu-text { flex: 1; }
.menu-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-800);
}
.menu-desc {
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 2px;
}

.home-reset {
  text-align: center;
  padding: 8px 0 24px;
}
.btn-reset {
  background: none;
  border: none;
  color: var(--gray-400);
  font-size: 14px;
  cursor: pointer;
  padding: 8px 16px;
}
.btn-reset:active { color: var(--danger); }

/* Chapter Select */
.chapter-list { display: flex; flex-direction: column; gap: 10px; }
.chapter-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: all 0.15s;
}
.chapter-card:active { background: var(--gray-50); transform: scale(0.99); }
.chapter-num {
  width: 40px;
  height: 40px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}
.chapter-info { flex: 1; }
.chapter-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-800);
}
.chapter-progress {
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 3px;
}
.chapter-arrow {
  color: var(--gray-300);
}

/* Question Card */
.question-card {
  margin-bottom: 16px;
}
.q-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.q-index {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.q-stem {
  font-size: 16px;
  font-weight: 500;
  color: var(--gray-900);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* Action Bar (below question) */
.q-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  gap: 8px;
}
.q-action-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 13px;
  color: var(--gray-500);
  cursor: pointer;
  transition: all 0.15s;
}
.q-action-btn:active { background: var(--gray-50); }
.q-action-btn.favorited { border-color: var(--danger); color: var(--danger); }
.q-action-btn.favorited svg { fill: var(--danger); }

/* Navigation */
.q-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 12px;
}
.q-nav .btn { flex: 1; }

/* Answer Sheet */
.answer-sheet {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin-top: 12px;
}
.sheet-item {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-500);
  cursor: pointer;
  transition: all 0.15s;
}
.sheet-item.answered { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }
.sheet-item.current { background: var(--primary); border-color: var(--primary); color: var(--white); }
.sheet-item.correct-mark { background: var(--success-light); border-color: var(--success); color: var(--success); }
.sheet-item.wrong-mark { background: var(--danger-light); border-color: var(--danger); color: var(--danger); }

/* Exam Setup */
.exam-setup { padding: 8px 0; }
.exam-setup .form-group { margin-bottom: 20px; }
.exam-config-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.config-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-100);
}
.config-row:last-child { border-bottom: none; }
.config-label { font-size: 15px; color: var(--gray-700); }
.config-value { display: flex; align-items: center; gap: 8px; }
.num-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1.5px solid var(--gray-200);
  background: var(--white);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--gray-600);
}
.num-btn:active { background: var(--gray-100); }
.num-display {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  min-width: 36px;
  text-align: center;
}

/* Exam Timer */
.exam-timer {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
}
.exam-timer.warning { color: var(--danger); }

/* Result */
.result-card {
  text-align: center;
  padding: 32px 16px;
}
.result-score {
  font-size: 64px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), #60A5FA);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.result-label {
  font-size: 14px;
  color: var(--gray-400);
  margin-top: 4px;
}
.result-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 24px;
}
.result-stat { text-align: center; }
.result-stat .num { font-size: 20px; font-weight: 700; }
.result-stat .label { font-size: 12px; color: var(--gray-400); margin-top: 2px; }
.result-stat.correct .num { color: var(--success); }
.result-stat.wrong .num { color: var(--danger); }

/* Admin */
.admin-login {
  max-width: 320px;
  margin: 60px auto 0;
  text-align: center;
}
.admin-login h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 8px;
}
.admin-login p {
  font-size: 14px;
  color: var(--gray-400);
  margin-bottom: 24px;
}

.admin-panel { padding-bottom: 80px; }
.admin-tabs {
  display: flex;
  gap: 0;
  background: var(--gray-100);
  border-radius: var(--radius-sm);
  padding: 3px;
  margin-bottom: 16px;
}
.admin-tab {
  flex: 1;
  height: 36px;
  border: none;
  background: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-500);
  cursor: pointer;
  transition: all 0.15s;
}
.admin-tab.active {
  background: var(--white);
  color: var(--primary);
  box-shadow: var(--shadow);
}

.question-list-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-100);
}
.question-list-item:last-child { border-bottom: none; }
.ql-content { flex: 1; }
.ql-stem {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.ql-meta {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}
.ql-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
  padding-top: 2px;
}
.ql-actions button {
  width: 32px;
  height: 32px;
  border: none;
  background: none;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
}
.ql-actions button:active { background: var(--gray-100); }
.ql-actions button.delete-btn:active { color: var(--danger); }

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}
.pagination button {
  height: 36px;
  padding: 0 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  background: var(--white);
  font-size: 13px;
  color: var(--gray-600);
  cursor: pointer;
}
.pagination button:disabled { opacity: 0.4; pointer-events: none; }
.pagination button.active { background: var(--primary); color: var(--white); border-color: var(--primary); }
.pagination span { font-size: 13px; color: var(--gray-500); }

/* Essay question textarea */
.essay-answer-area {
  width: 100%;
  min-height: 120px;
  padding: 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray-800);
  resize: vertical;
  outline: none;
}
.essay-answer-area:focus { border-color: var(--primary); }

/* Exam history */
.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-100);
}
.history-item:last-child { border-bottom: none; }
.history-info .history-date { font-size: 13px; color: var(--gray-400); }
.history-info .history-detail { font-size: 14px; color: var(--gray-700); margin-top: 2px; }
.history-score { font-size: 22px; font-weight: 700; color: var(--primary); }

/* Filter row */
.filter-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.filter-row select {
  flex: 1;
  min-width: 0;
  height: 38px;
  padding: 0 10px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--gray-600);
  background: var(--white);
  outline: none;
}

/* Wrong/Fav list item */
.review-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-100);
  cursor: pointer;
}
.review-item:last-child { border-bottom: none; }
.review-stem {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.review-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}
.review-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}