/* Global Modern Theme */
body {
  background: #f4f6f9;
  font-family: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: #212529;
  min-height: 100vh;
  opacity: 0;
  transition: opacity 0.4s ease-in-out;
}
body.loaded { opacity: 1; }

/* Navbar */
.navbar {
  background: linear-gradient(90deg, #0d6efd, #0dcaf0);
  box-shadow: 0 3px 10px rgba(0,0,0,0.15);
}
.navbar-brand {
  color: #fff !important;
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0.5px;
}
.navbar a.btn {
  color: #fff !important;
  border-color: rgba(255,255,255,0.4);
}
.navbar a.btn:hover { background: rgba(255,255,255,0.15); }

/* Buttons */
.btn {
  border-radius: 50px;
  font-weight: 500;
  transition: 0.2s ease-in-out;
}
.btn-primary {
  background: linear-gradient(90deg, #0d6efd, #6610f2);
  border: none;
}
.btn-primary:hover { filter: brightness(1.1); }
.btn-outline-primary:hover {
  background: #0d6efd;
  color: #fff;
}

/* Cards */
.card {
  border: none;
  border-radius: 12px;
  transition: all 0.2s ease-in-out;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}
.category-card {
  background: linear-gradient(145deg, #ffffff, #f1f3f5);
  border-radius: 14px;
  transition: 0.25s;
  text-align: center;
}
.category-card:hover {
  background: linear-gradient(145deg, #e9ecef, #ffffff);
  transform: translateY(-5px);
}

/* Tables */
.table {
  border-radius: 8px;
  overflow: hidden;
}
.table th {
  background-color: #e9ecef;
  font-weight: 600;
}

/* Alerts */
.alert {
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

/* Dark Mode */
body.dark {
  background: #121212;
  color: #f8f9fa;
}
body.dark .navbar {
  background: linear-gradient(90deg, #212529, #343a40);
}
body.dark .card,
body.dark .bg-white {
  background: #1e1e1e !important;
  color: #f8f9fa;
}
body.dark .btn-outline-primary {
  border-color: #0dcaf0;
  color: #0dcaf0;
}
body.dark .btn-outline-primary:hover {
  background: #0dcaf0;
  color: #000;
}

/* Article Body */
.article-body {
  line-height: 1.7;
  font-size: 1.05rem;
}
.article-body img {
  max-width: 100%;
  border-radius: 6px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
  margin: 10px 0;
}