/* =====================================================
   course-ui.css — استایل اختصاصی دوره هوش مصنوعی برای وکلا
   سازگار با سیستم رنگ و دارک‌مود سایت اصلی
   ===================================================== */

:root {
  --course-primary: #3f7a68;
  --course-primary-light: #5e9583;
  --course-accent: #c08f2e;
  --course-success: #16a34a;
  --course-danger: #dc2626;
  --course-radius: 12px;
  --course-shadow: 0 4px 14px rgba(0,0,0,0.06);
  --course-shadow-hover: 0 10px 25px rgba(0,0,0,0.1);
}

body.dark-mode {
  --course-primary: #5e9583;
  --course-primary-light: #5e9583;
  --course-accent: #d6a846;
}

/* ---------- Layout دوره ---------- */
.course-page {
  display: flex;
  min-height: 100vh;
}

.course-sidebar {
  width: 280px;
  background: var(--sidebar-bg, #fff);
  border-left: 1px solid var(--border, #e0e0e0);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 50;
  transition: transform 0.3s ease, background 0.3s;
}

.course-main {
  flex: 1;
  padding: 1.5rem 2rem;
  overflow-y: auto;
  background: var(--bg, #f8f9fa);
  transition: background 0.3s;
}

/* ---------- هدر دوره + نوار پیشرفت ---------- */
.course-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.course-header h1 {
  font-size: 1.45rem;
  color: var(--course-primary);
  margin: 0 0 0.25rem 0;
}

.course-header .subtitle {
  color: var(--text-light, #666);
  font-size: 0.9rem;
}

.progress-wrap {
  background: var(--card-bg, #fff);
  border: 1px solid var(--border, #e0e0e0);
  border-radius: 10px;
  padding: 0.75rem 1.1rem;
  min-width: 200px;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-light, #666);
  margin-bottom: 0.4rem;
}

.progress-bar {
  height: 8px;
  background: var(--border, #e0e0e0);
  border-radius: 99px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--course-primary-light), var(--course-accent));
  border-radius: 99px;
  transition: width 0.5s ease;
}

/* ---------- سایدبار فصل‌ها ---------- */
.sidebar-brand {
  padding: 1.25rem 1.25rem 1rem;
  border-bottom: 1px solid var(--border, #e0e0e0);
  text-align: center;
}

.sidebar-brand img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 0.5rem;
}

.sidebar-brand h2 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0;
}

.sidebar-nav-course {
  list-style: none;
  padding: 0.75rem;
  flex: 1;
}

.sidebar-nav-course .nav-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 0.9rem;
  border-radius: 8px;
  color: var(--text-light, #666);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.sidebar-nav-course .nav-link:hover,
.sidebar-nav-course .nav-link.active {
  background: var(--primary-light, #e3f2fd);
  color: var(--primary, #1976d2);
}

.chapters-accordion {
  list-style: none;
  padding: 0.25rem 0.5rem 0.5rem;
}

.chapter-item-btn {
  width: 100%;
  text-align: right;
  background: transparent;
  border: none;
  padding: 0.6rem 0.85rem;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
  color: var(--text, #333);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  transition: all 0.2s;
}

.chapter-item-btn:hover {
  background: var(--primary-light, #e3f2fd);
  color: var(--primary, #1976d2);
}

.chapter-item-btn.active {
  background: var(--course-primary);
  color: #fff;
  font-weight: 600;
}

.chapter-item-btn.locked {
  opacity: 0.55;
}

.ch-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(0,0,0,0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}

.chapter-item-btn.active .ch-num {
  background: rgba(255,255,255,0.25);
}

.ch-progress-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border, #e0e0e0);
  margin-right: auto;
  flex-shrink: 0;
}

.ch-progress-dot.done {
  background: var(--course-success);
}

.sidebar-footer-course {
  padding: 1rem;
  border-top: 1px solid var(--border, #e0e0e0);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.btn-sidebar {
  width: 100%;
  padding: 0.6rem;
  border-radius: 8px;
  border: 1px solid var(--border, #e0e0e0);
  background: var(--bg, #f8f9fa);
  color: var(--text, #333);
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: all 0.2s;
}

.btn-sidebar:hover {
  border-color: var(--primary, #1976d2);
  color: var(--primary, #1976d2);
}

/* ---------- کارت‌های درس ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 1.15rem;
  margin-top: 1.25rem;
}

.lesson-card {
  background: var(--card-bg, #fff);
  border: 1px solid var(--border, #e0e0e0);
  border-radius: var(--course-radius);
  padding: 1.2rem;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--course-shadow);
}

.lesson-card::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 4px; height: 100%;
  background: var(--course-primary-light);
  opacity: 0;
  transition: opacity 0.25s;
}

.lesson-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--course-shadow-hover);
}

.lesson-card:hover::before { opacity: 1; }

.lesson-card.viewed {
  border-color: #86efac;
}

.lesson-card.viewed::after {
  content: '✓';
  position: absolute;
  top: 10px;
  left: 10px;
  width: 22px;
  height: 22px;
  background: var(--course-success);
  color: #fff;
  border-radius: 50%;
  font-size: 0.7rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-top {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-light, #e3f2fd);
  color: var(--primary, #1976d2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.card-title {
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text, #333);
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.78rem;
  color: var(--text-light, #666);
  margin-top: auto;
  flex-wrap: wrap;
}

.badge {
  padding: 0.18rem 0.6rem;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
}

.badge.مقدماتی { background: #dcfce7; color: #166534; }
.badge.متوسط { background: #fef9c3; color: #854d0e; }
.badge.پیشرفته { background: #fee2e2; color: #991b1b; }

body.dark-mode .badge.مقدماتی { background: #14532d; color: #86efac; }
body.dark-mode .badge.متوسط { background: #713f12; color: #fde68a; }
body.dark-mode .badge.پیشرفته { background: #7f1d1d; color: #fca5a5; }

/* ---------- کارت غیرفعال / خالی ---------- */
.inactive-card, .empty-state {
  background: var(--card-bg, #fff);
  border: 2px dashed var(--border, #e0e0e0);
  border-radius: var(--course-radius);
  padding: 3rem 2rem;
  text-align: center;
  color: var(--text-light, #666);
  margin-top: 1.25rem;
}

.inactive-card i, .empty-state i {
  font-size: 2.8rem;
  margin-bottom: 1rem;
  color: #cbd5e1;
  display: block;
}

body.dark-mode .inactive-card i,
body.dark-mode .empty-state i { color: #475569; }

/* ---------- جزئیات درس ---------- */
.lesson-detail {
  background: var(--card-bg, #fff);
  border: 1px solid var(--border, #e0e0e0);
  border-radius: var(--course-radius);
  padding: 1.75rem;
  box-shadow: var(--course-shadow);
}

.lesson-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.btn-tool {
  background: transparent;
  border: 1px solid var(--border, #e0e0e0);
  color: var(--text-light, #666);
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s;
}

.btn-tool:hover {
  background: var(--primary-light, #e3f2fd);
  color: var(--primary, #1976d2);
  border-color: var(--primary, #1976d2);
}

.btn-tool.bookmarked {
  background: #fef3c7;
  border-color: #f59e0b;
  color: #92400e;
}

body.dark-mode .btn-tool.bookmarked {
  background: #78350f;
  border-color: #f59e0b;
  color: #fde68a;
}

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

.btn-tool.primary:hover {
  background: var(--course-primary-light);
  border-color: var(--course-primary-light);
  color: #fff;
}

.btn-tool.success {
  background: var(--course-success);
  color: #fff;
  border-color: var(--course-success);
}

/* خواندن پیشرفت درس */
.reading-progress {
  position: sticky;
  top: 0;
  height: 3px;
  background: var(--border, #e0e0e0);
  z-index: 20;
  margin: -1.75rem -1.75rem 1.25rem;
  border-radius: var(--course-radius) var(--course-radius) 0 0;
  overflow: hidden;
}

.reading-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--course-accent);
  transition: width 0.15s linear;
}

/* محتوای درس غنی */
.objectives-box {
  background: var(--bg, #f8f9fa);
  padding: 1rem 1.25rem;
  border-radius: 8px;
  border-right: 4px solid var(--course-accent);
  margin: 1rem 0;
}

.objectives-box strong {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--course-primary);
}

.objectives-box ul {
  padding-right: 1.2rem;
  margin: 0;
}

.objectives-box li { margin-bottom: 0.3rem; }

.section-heading {
  color: var(--course-primary);
  font-size: 1.15rem;
  margin: 1.5rem 0 0.6rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border, #e0e0e0);
}

.example-box, .tips-box, .mistakes-box, .exercise-box {
  padding: 1rem 1.25rem;
  border-radius: 8px;
  margin: 1rem 0;
  border-right: 4px solid;
}

.example-box { background: #fffbeb; border-color: #f59e0b; }
.tips-box { background: #eff6ff; border-color: #3b82f6; }
.mistakes-box { background: #fef2f2; border-color: #dc2626; }
.exercise-box { background: #f5f3ff; border-color: #7c3aed; }

body.dark-mode .example-box { background: #422006; }
body.dark-mode .tips-box { background: #1e3a5f; }
body.dark-mode .mistakes-box { background: #450a0a; }
body.dark-mode .exercise-box { background: #2e1065; }

.summary-box {
  background: #eff6ff;
  padding: 1rem 1.25rem;
  border-radius: 8px;
  border-right: 4px solid var(--course-primary-light);
  margin-top: 1.75rem;
}

body.dark-mode .summary-box { background: #1e3a5f; }

.keywords-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.25rem;
}

.keyword-tag {
  background: #e0e7ff;
  color: #3730a3;
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
  font-size: 0.78rem;
}

body.dark-mode .keyword-tag {
  background: #312e81;
  color: #c7d2fe;
}

.answer-details {
  margin-top: 0.75rem;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  padding: 0.7rem 1rem;
}

body.dark-mode .answer-details {
  background: #14532d;
  border-color: #166534;
}

.answer-details summary {
  cursor: pointer;
  font-weight: 600;
  color: #166534;
}

body.dark-mode .answer-details summary { color: #86efac; }

.notes-area {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border, #e0e0e0);
}

.notes-area textarea {
  width: 100%;
  min-height: 90px;
  padding: 0.7rem;
  border: 1px solid var(--border, #e0e0e0);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.92rem;
  resize: vertical;
  background: var(--bg, #f8f9fa);
  color: var(--text, #333);
}

.lesson-nav {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 1.75rem;
  flex-wrap: wrap;
}

/* ---------- آزمون ---------- */
.quiz-box {
  margin-top: 1.75rem;
  padding: 1.4rem;
  background: #fffbeb;
  border: 1px solid #fcd34d;
  border-radius: var(--course-radius);
}

body.dark-mode .quiz-box {
  background: #422006;
  border-color: #a16207;
}

.quiz-option-btn {
  text-align: right;
  padding: 0.9rem 1rem;
  border: 2px solid var(--border, #e0e0e0);
  border-radius: 10px;
  background: var(--card-bg, #fff);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.92rem;
  transition: all 0.2s;
  width: 100%;
  color: var(--text, #333);
}

.quiz-option-btn:hover {
  border-color: var(--course-primary);
  background: var(--primary-light, #e3f2fd);
}

/* ---------- Focus Mode ---------- */
body.focus-mode .course-sidebar {
  transform: translateX(100%);
  position: fixed;
}

body.focus-mode .course-main {
  max-width: 820px;
  margin: 0 auto;
}

/* ---------- Mobile Hamburger ---------- */
.mobile-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--course-primary);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 60;
}

.mobile-header .menu-btn {
  background: rgba(255,255,255,0.15);
  border: none;
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  font-size: 1.2rem;
  cursor: pointer;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 45;
}

.sidebar-overlay.open { display: block; }

/* ---------- جستجو ---------- */
.search-box-course {
  position: relative;
  margin: 0.75rem;
}

.search-box-course input {
  width: 100%;
  padding: 0.55rem 2rem 0.55rem 0.75rem;
  border: 1px solid var(--border, #e0e0e0);
  border-radius: 8px;
  background: var(--bg, #f8f9fa);
  color: var(--text, #333);
  font-family: inherit;
  font-size: 0.85rem;
}

.search-box-course i {
  position: absolute;
  left: 0.7rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light, #666);
  font-size: 0.85rem;
}

/* ---------- Skeleton ---------- */
.skeleton {
  background: linear-gradient(90deg, var(--border, #e0e0e0) 25%, var(--bg, #f8f9fa) 50%, var(--border, #e0e0e0) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.2s infinite;
  border-radius: 8px;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .mobile-header { display: flex; }

  .course-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    height: 100%;
    transform: translateX(100%);
    box-shadow: -4px 0 20px rgba(0,0,0,0.15);
  }

  .course-sidebar.open {
    transform: translateX(0);
  }

  .course-main {
    padding: 1rem;
  }

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

  body.focus-mode .course-sidebar {
    transform: translateX(100%);
  }
}

@media (max-width: 480px) {
  .course-header h1 { font-size: 1.2rem; }
  .lesson-detail { padding: 1.1rem; }
}