:root {
  --primary: #007BC1;
  --secondary: #583F98;
  --accent: #F37021;
  --highlight: #FBAF33;
  --highlight2: #f6933d;
  --text: #6E6E6E;
}

body {
  color: var(--text);
  background: #f3f3fa;
}

.navbar-gradient {
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%) !important;
}

.navbar, .navbar-dark.bg-dark {
  background: var(--secondary) !important;
  border-bottom: none;
}

.navbar-brand {
  color: #fff !important;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #fff;
}

.brand-icon {
  width: 20px;
  height: 20px;
  fill: var(--highlight);
}

.navbar-nav .nav-link {
  color: #e5e5fa !important;
  font-weight: 500;
}

.navbar-nav .nav-link.active, .navbar-nav .nav-link:focus, .navbar-nav .nav-link:hover {
  color: var(--highlight) !important;
}

.toc-card {
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(44, 55, 130, 0.09);
  border: none;
}

.chapter-image {
  width: 100%;
  height: 150px;
  display: block;
  border-radius: 8px;
  object-fit: cover;
  object-position: top;
  border-bottom: 3px solid var(--highlight);
}

.chapter {
  scroll-margin-top: 90px;
}

.card-title {
  font-weight: 700;
  color: var(--secondary);
}

.chapter .card-title {
  display: flex;
  align-items: center;
  gap: 0.6em;
}

.main-content {
  background: #f3f3fa;
  min-height: 96vh;
  padding-bottom: 42px;
}

.btn, .btn-lg, .btn-outline-primary {
  background: var(--accent);
  border: none;
  color: #fff;
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

.chapter .fa-solid {
  color: var(--accent);
}

.card-footer {
  background: var(--highlight) !important;
  color: #222;
}

footer {
  background: #fbfbfe;
  border-top: 2px solid var(--accent);
}

#chapters-nav {
  background: rgba(255, 255, 255, 0);
  border-radius: 1rem;
  margin-bottom: 2em;
  box-shadow: 0 2px 16px rgba(44, 55, 130, 0);
  padding: 10px 24px;
  text-align: center;
}

#chapters-nav .btn {
  margin: 2px 2px;
  font-weight: 700;
  letter-spacing: 0.03em;
  font-size: 1.05rem;
  background: var(--primary);
  border: none;
  color: #fff;
  padding: 6px 18px;
  border-radius: 24px;
  transition: background 0.1s, color 0.1s;
}

#chapters-nav .btn:hover {
  background: var(--accent);
  color: #ffffff;
}

@media (max-width: 600px) {
  #chapters-nav {
    padding: 6px 2vw;
    font-size: 0.93rem;
  }
  #chapters-nav .btn {
    font-size: 0.94rem;
    margin: 2px 2px;
    padding: 4px 10px;
  }
}
#backToTopBtn {
  position: fixed;
  bottom: 40px;
  right: 36px;
  z-index: 1100;
  display: none;
  background: var(--secondary);
  color: #fff;
  border: none;
  border-radius: 60px;
  padding: 18px 20px 16px 20px;
  font-size: 1.4rem;
  box-shadow: 0 4px 12px rgba(88, 63, 152, 0.22);
  transition: background 0.2s, color 0.2s;
}

#backToTopBtn:hover {
  background: var(--accent);
  color: #fff;
}

html {
  scroll-behavior: smooth;
}

.chapter-content {
  background: white;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 4px 16px rgba(44, 55, 130, 0.09);
}

.chapter-content h2 {
  color: var(--secondary);
  font-weight: 700;
  margin-top: 30px;
}

.chapter-content h3 {
  color: var(--primary);
  margin-top: 25px;
}

.chapter-nav {
  margin-top: 40px;
  display: flex;
  justify-content: space-between;
}

.btn-course {
  background: var(--accent);
  border: none;
  color: white;
}

.btn-course:hover {
  background: var(--secondary);
}

.table thead th, .table-striped tbody tr:nth-of-type(odd) {
  background: #f3f3fa;
}/*# sourceMappingURL=style.css.map */