:root {
  --primary-color: #6e8efb;
  --secondary-color: #a777e3;
  --accent-color: #ff7f00;
  --text-color: #333;
  --light-bg: #f8f9fa;
  --card-shadow: 0 4px 6px rgba(0,0,0,0.1);
  --transition-speed: 0.3s;
}

body {
  font-family: 'Arial', sans-serif;
  color: var(--text-color);
  background-color: var(--light-bg);
}

.container {
  padding: 0.2rem 0;
}

.sidebar-flat {
  font-family: 'Segoe UI', sans-serif;
}
.nav-item {
  display: flex;
  align-items: center;
  padding: 10px 7px;
  color: #495057;
  text-decoration: none;
  transition: all 0.3s;
}
.nav-item:hover {
  background: #e9ecef;
  color: #40C9E3;
}
.nav-item i {
  margin-right: 10px;
  font-size: 18px;
}
.nav-item span {
  font-size: 15px;
}

.navbar {
  background-color: var(--primary-color);
  color: white;
}

.panel {
  margin-bottom: 20px;
  border: 1px solid #dee2e6;
  border-radius: 15px;
  box-shadow: var(--card-shadow);
}

.panel-heading {
  background-color: var(--primary-color) !important;
  color: white !important;
}
.panel-heading i {
  font-size: 1.2em;
  margin-right: 8px;
}
.panel-heading h3 {
  margin: 0;
  line-height: 1;
}

.panel-body {
  padding: 15px;
  background-color: white;
}

.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
}

@media (max-width: 768px) {
  .col-lg-3, .col-lg-6, .col-lg-9, .col-lg-12 {
    padding: 0 15px;
  }
}

.pagination {
  display: flex;
  padding-left: 0;
  list-style: none;
  border-radius: 4px;
  margin: 10px 0;
}

.pagination > li > a,
.pagination > li > span {
  position: relative;
  display: block;
  padding: 8px 15px;
  margin-left: -1px;
  line-height: 1.25;
  color: #40C9E3;
  background-color: #fff;
  border: 1px solid #dee2e6;
  transition: all 0.3s ease;
}

.pagination > li > a:hover {
  z-index: 2;
  color: #fff;
  background-color: #40C9E3;
  border-color: #40C9E3;
}

.pagination > .active > a,
.pagination > .active > a:focus,
.pagination > .active > a:hover,
.pagination > .active > span,
.pagination > .active > span:focus,
.pagination > .active > span:hover {
  z-index: 3;
  color: #fff;
  cursor: default;
  background-color: #40C9E3;
  border-color: #40C9E3;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}