/* Aptis + Bootstrap overrides */
:root {
  --bs-primary: #e94560;
  --bs-primary-rgb: 233, 69, 96;
  --bs-body-bg: #f3f0eb;
  --bs-body-color: #2d2a26;
  --bs-border-color: rgba(45, 42, 38, 0.1);
  --aptis-accent: #e94560;
  --aptis-accent-soft: rgba(233, 69, 96, 0.12);
  --aptis-ink-soft: #6b6560;
  --aptis-ink-muted: #9a948c;
  --aptis-paper: #fffcf8;
  --aptis-line: rgba(45, 42, 38, 0.08);
}

body.course-app {
  background: linear-gradient(180deg, #f3f0eb 0%, #ebe6df 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

/* Navbar — cream style, not harsh white */
.aptis-navbar {
  background: rgba(255, 252, 248, 0.94) !important;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--aptis-line);
}
.aptis-navbar .navbar-brand { color: #2d2a26; }
.aptis-navbar .btn-primary {
  --bs-btn-bg: #e94560;
  --bs-btn-border-color: #e94560;
}

.navbar-brand img { border-radius: 10px; }

/* Links inside content only — not nav pills */
a:not(.btn):not(.nav-link):not(.dropdown-item):not(.section-card):not(.course-lesson):not(.skill-card-link):not(.hub-home-btn) {
  color: var(--aptis-accent);
  text-decoration: none;
}
a:not(.btn):not(.nav-link):not(.dropdown-item):not(.section-card):not(.course-lesson):not(.skill-card-link):not(.hub-home-btn):hover {
  color: #c73a52;
}

.home-auth-link { margin: 12px 0 0; font-size: 0.88rem; }
.home-auth-link a { font-weight: 600; }

/* ── Home page (match index.html) ── */
.lesson-title { font-size: 0.98rem; }
.lesson-arrow { color: var(--aptis-ink-muted); font-size: 1.2rem; }
.chapter-chevron { color: var(--aptis-ink-muted); transition: transform 0.2s; }
.course-chapter.collapsed .chapter-chevron { transform: rotate(-90deg); display: inline-block; }
.course-chapter.hidden { display: none; }

.skill-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}
@media (min-width: 640px) { .skill-nav { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 900px) { .skill-nav { grid-template-columns: repeat(5, minmax(0, 1fr)); } }

.skill-card,
.skill-card-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 12px;
  border: 1px solid var(--aptis-line);
  border-radius: 12px;
  background: var(--aptis-paper);
  cursor: pointer;
  text-align: left;
  box-shadow: 0 2px 8px rgba(45, 42, 38, 0.04);
  transition: border-color 0.2s, transform 0.15s;
  font: inherit;
  color: inherit;
  width: 100%;
}
.skill-card:hover,
.skill-card-link:hover { border-color: rgba(233, 69, 96, 0.25); transform: translateY(-1px); }
.skill-card-link { text-decoration: none; }
.skill-card.active {
  border-color: rgba(233, 69, 96, 0.45);
  background: var(--aptis-accent-soft);
}
.skill-card-icon { font-size: 1.4rem; flex-shrink: 0; }
.skill-card-title { display: block; font-weight: 600; font-size: 0.95rem; }
.skill-card-meta { display: block; color: var(--aptis-ink-muted); font-size: 0.82rem; margin-top: 2px; }

.badge-reading { background: rgba(59, 130, 246, 0.12); color: #1d4ed8; }
.badge-listening { background: rgba(168, 85, 247, 0.12); color: #7c3aed; }
.badge-speaking { background: rgba(233, 69, 96, 0.12); color: var(--aptis-accent); }
.badge-writing { background: rgba(21, 128, 61, 0.12); color: #15803d; }
.badge-vocabulary { background: rgba(245, 158, 11, 0.12); color: #b45309; }

.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.filter-btn {
  border: 0;
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  background: #fff;
  color: var(--aptis-ink-soft);
  box-shadow: 0 1px 3px rgba(45, 42, 38, 0.06);
  transition: background 0.2s, color 0.2s;
}
.filter-btn:hover { color: var(--aptis-accent); }
.filter-btn.active {
  background: var(--aptis-accent);
  color: #fff;
}

.btn-primary {
  --bs-btn-bg: #e94560;
  --bs-btn-border-color: #e94560;
  --bs-btn-hover-bg: #d63d56;
  --bs-btn-hover-border-color: #c73a52;
  --bs-btn-active-bg: #c73a52;
  --bs-btn-active-border-color: #b8354b;
}

.text-primary { color: #e94560 !important; }
.bg-primary-subtle { background-color: rgba(233, 69, 96, 0.12) !important; }

.course-chapter.hidden { display: none !important; }

.hub-section-card {
  transition: transform 0.15s, box-shadow 0.15s;
}
.hub-section-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(45, 42, 38, 0.08);
}

.question-card { scroll-margin-top: 140px; }

/* Quiz content inside Bootstrap cards */
.question-card .title-quiz-choice .font-weight-600,
.question-card .my-3.font-weight-bold {
  font-size: 0.85rem;
  color: #6b6560;
  padding: 0.5rem 0.75rem;
  background: #f6f2ec;
  border-radius: 0.5rem;
  border-left: 3px solid rgba(233, 69, 96, 0.35);
}

.question-card select.select_word,
.question-card input.input_answer_quiz_fill_words {
  min-width: 7em;
  padding: 0.45rem 2rem 0.45rem 0.75rem;
  border: 1.5px solid #e6e0d8;
  border-radius: 0.5rem;
  font-size: 0.95rem;
}

.question-card select.select_word:focus,
.question-card input.input_answer_quiz_fill_words:focus {
  border-color: #e94560;
  box-shadow: 0 0 0 0.2rem rgba(233, 69, 96, 0.2);
  outline: 0;
}

.question-card label.area-answer-quiz {
  display: block;
  cursor: pointer;
  border-radius: 0.5rem;
  border: 1.5px solid transparent;
  margin: 0.5rem 0;
  transition: background 0.15s, border-color 0.15s;
}
.question-card label.area-answer-quiz:hover {
  background: #faf7f3;
  border-color: #ece6de;
}

.btn-bookmark, .question-card .clearfix:empty { display: none !important; }
.w3-light-grey, .w3-padding { background: transparent !important; padding: 0 !important; }

.q-result.ok { color: #198754; font-weight: 600; }
.q-result.bad { color: #dc3545; font-weight: 600; }
.q-result.partial { color: #fd7e14; font-weight: 600; }

select.select_word.quiz-correct { border-color: #198754 !important; background: rgba(25, 135, 84, 0.08) !important; }
select.select_word.quiz-wrong { border-color: #dc3545 !important; background: rgba(220, 53, 69, 0.08) !important; }
label.area-answer-quiz.quiz-correct-answer { border-color: #198754 !important; background: rgba(25, 135, 84, 0.08) !important; }
label.area-answer-quiz.quiz-wrong { border-color: #dc3545 !important; background: rgba(220, 53, 69, 0.08) !important; }

/* Vocab SPA — home stats, cards, buttons */
.vocab-app .vocab-stat-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.vocab-app .vocab-stat-pill {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: #fff;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.75rem;
  box-shadow: 0 2px 8px rgba(45, 42, 38, 0.04);
}

.vocab-app .vocab-stat-pill-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--bs-primary);
  line-height: 1;
}

.vocab-app .vocab-stat-pill-label {
  font-size: 0.78rem;
  color: #6c757d;
  line-height: 1.2;
}

.vocab-app .vocab-hero.course-hero {
  margin-bottom: 18px;
}

.vocab-app .vocab-hero .hub-subtitle {
  margin-bottom: 12px;
}

.vocab-app .vocab-review-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  margin-bottom: 16px;
  background: #fff;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.75rem;
  box-shadow: 0 2px 8px rgba(45, 42, 38, 0.04);
}

.vocab-app .vocab-review-banner.active {
  border-color: rgba(233, 69, 96, 0.28);
  background: linear-gradient(135deg, rgba(233, 69, 96, 0.06), rgba(21, 128, 61, 0.04));
}

.vocab-app .vocab-review-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--aptis-accent-soft);
  display: grid;
  place-items: center;
  font-size: 18px;
  flex-shrink: 0;
}

.vocab-app .vocab-review-text { flex: 1; min-width: 0; }
.vocab-app .vocab-review-text strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
}
.vocab-app .vocab-review-text span {
  display: block;
  font-size: 0.82rem;
  color: #6c757d;
  margin-top: 2px;
}

.vocab-app .vocab-lesson-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.vocab-app .vocab-lesson-list .section-card {
  margin-bottom: 0;
}

.vocab-app .vocab-search {
  width: 100%;
  margin-bottom: 1rem;
  padding: 12px 16px;
  border: 1px solid var(--bs-border-color);
  border-radius: 999px;
  font: inherit;
  font-size: 0.92rem;
  background: #fff;
  box-shadow: 0 2px 8px rgba(45, 42, 38, 0.04);
}

.vocab-app .vocab-search:focus {
  outline: none;
  border-color: rgba(233, 69, 96, 0.35);
}

.vocab-app button.vocab-topic-card.section-card {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  margin-bottom: 0;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.vocab-app .vocab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.85rem;
  border: 0;
  cursor: pointer;
  text-decoration: none;
}
.vocab-app .vocab-btn-primary { background: var(--bs-primary); color: #fff; }
.vocab-app .vocab-btn-ghost { background: #fff; border: 1px solid var(--bs-border-color); color: #6b6560; }
.vocab-app .flash-card {
  background: #fff;
  border-radius: 1rem;
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: 0 8px 28px rgba(45, 42, 38, 0.07);
  margin-bottom: 1rem;
}