:root {
  --primary-color: #25f4ee;
  --secondary-color: #fe2c55;
  --dark-color: #121212;
  --light-color: #ffffff;
  --gray-color: #f8f9fa;
  --text-color: #333333;
  --sidebar-width: 260px;
  --header-height: 60px;
  --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --transition-speed: 0.3s;
}

body {
  background-color: var(--gray-color);
  font-family: 'Roboto', sans-serif;
  overflow-x: hidden;
  color: var(--text-color);
  transition: background-color var(--transition-speed);
}

/* Wrapper */
.wrapper {
  display: flex;
  width: 100%;
  align-items: stretch;
}

/* Sidebar */
.sidebar {
  min-width: var(--sidebar-width);
  max-width: var(--sidebar-width);
  background: linear-gradient(180deg, var(--dark-color) 0%, #1a1a1a 100%);
  color: var(--light-color);
  transition: all var(--transition-speed);
  height: 100vh;
  position: sticky;
  top: 0;
  z-index: 999;
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.sidebar.active {
  margin-left: calc(-1 * var(--sidebar-width));
}

.sidebar .sidebar-header {
  padding: 20px;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 24px;
  color: var(--primary-color);
}

.sidebar .sidebar-header h3 {
  margin: 0;
  font-weight: 700;
  font-size: 1.4rem;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.user-info {
  display: flex;
  align-items: center;
  padding: 15px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  gap: 10px;
  font-size: 0.9rem;
}

.user-info i {
  font-size: 1.2rem;
  color: var(--primary-color);
}

.sidebar ul.components {
  padding: 20px 0;
}

.sidebar ul li {
  margin-bottom: 5px;
}

.sidebar ul li a {
  padding: 12px 20px;
  font-size: 1rem;
  display: flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all var(--transition-speed);
  border-left: 3px solid transparent;
  gap: 10px;
}

.sidebar ul li a:hover, .sidebar ul li a.active {
  color: var(--light-color);
  background: rgba(255, 255, 255, 0.05);
  border-left: 3px solid var(--primary-color);
}

.sidebar ul li a i {
  font-size: 1.2rem;
  width: 24px;
  text-align: center;
}

.logout-item {
  margin-top: 30px;
}

.logout-item a {
  color: rgba(255, 255, 255, 0.6) !important;
}

.logout-item a:hover {
  color: var(--secondary-color) !important;
  border-left: 3px solid var(--secondary-color) !important;
}

/* Content */
#content {
  width: 100%;
  transition: all var(--transition-speed);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.content-container {
  flex: 1;
  padding: 20px;
}

/* Navbar */
.navbar {
  background-color: var(--light-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  padding: 0;
  height: var(--header-height);
}

.navbar .container-fluid {
  height: 100%;
}

#sidebarCollapse {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--text-color);
  padding: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-speed);
}

#sidebarCollapse:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.page-title {
  font-size: 1.2rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-title i {
  color: var(--primary-color);
}

.theme-toggle {
  cursor: pointer;
  font-size: 1.2rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-speed);
}

.theme-toggle:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

/* Cards */
.card {
  border: none;
  border-radius: 10px;
  box-shadow: var(--card-shadow);
  margin-bottom: 25px;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.card-header {
  font-weight: 500;
  padding: 15px 20px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.card-header.bg-primary {
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color)) !important;
}

.card-body {
  padding: 20px;
}

/* Tables */
.table-responsive {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.table {
  margin-bottom: 0;
}

.table thead {
  background-color: var(--dark-color);
  color: var(--light-color);
}

.table thead th {
  font-weight: 500;
  padding: 15px;
  border: none;
}

.table tbody td {
  padding: 12px 15px;
  vertical-align: middle;
  border-color: rgba(0, 0, 0, 0.05);
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: rgba(0, 0, 0, 0.02);
}

/* Forms */
.form-label {
  font-weight: 500;
  margin-bottom: 8px;
}

.form-control {
  padding: 12px 15px;
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  transition: all var(--transition-speed);
}

.form-control:focus {
  box-shadow: 0 0 0 3px rgba(37, 244, 238, 0.2);
  border-color: var(--primary-color);
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 500;
  transition: all var(--transition-speed);
}

.btn-primary {
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  border: none;
}

.btn-primary:hover, .btn-primary:focus {
  background: linear-gradient(45deg, var(--secondary-color), var(--primary-color));
  box-shadow: 0 5px 15px rgba(254, 44, 85, 0.3);
  transform: translateY(-2px);
}

/* Alerts */
.alert {
  border-radius: 8px;
  padding: 15px 20px;
  border: none;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.alert-success {
  background-color: rgba(40, 167, 69, 0.1);
  color: #28a745;
}

.alert-danger {
  background-color: rgba(220, 53, 69, 0.1);
  color: #dc3545;
}

.alert-info {
  background-color: rgba(23, 162, 184, 0.1);
  color: #17a2b8;
}

/* Code blocks */
code {
  background-color: rgba(0, 0, 0, 0.05);
  padding: 3px 6px;
  border-radius: 4px;
  font-family: monospace;
}

/* Mobile view */
@media (max-width: 768px) {
  .sidebar {
    margin-left: calc(-1 * var(--sidebar-width));
  }
  
  .sidebar.active {
    margin-left: 0;
  }
  
  #content {
    width: 100%;
  }
  
  .card-body {
    padding: 15px;
  }
  
  .table thead th, .table tbody td {
    padding: 10px;
  }
  
  .col-md-8 {
    width: 100%;
    padding-left: 10px;
    padding-right: 10px;
  }
  
  .row {
    margin-left: 0;
    margin-right: 0;
  }
}

/* Điều chỉnh cho màn hình điện thoại nhỏ như iPhone 7 */
@media (max-width: 375px) {
  /* Giảm kích thước font chữ */
  body {
    font-size: 0.8rem;
  }
  
  h4.mb-0 {
    font-size: 1.1rem;
  }
  
  h5.mb-0 {
    font-size: 0.95rem;
  }
  
  /* Giảm kích thước các nút */
  .btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
  }
  
  .btn-lg {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
  }
  
  /* Điều chỉnh input group */
  .input-group {
    display: flex;
    flex-direction: column;
  }
  
  .input-group .form-control {
    width: 100%;
    min-height: 30px; /* Giảm chiều cao */
    height: 30px; /* Thêm chiều cao cố định */
    border-radius: 0.25rem;
    margin-bottom: 3px; /* Giảm margin */
    font-size: 0.8rem; /* Giảm font size */
    padding: 0.25rem 0.5rem; /* Giảm padding */
  }
  
  .input-group .btn {
    width: 100%;
    border-radius: 0.25rem;
    height: 30px; /* Giảm chiều cao */
  }
  
  /* Giảm padding cho các cột */
  .col-md-3, .col-md-7, .col-md-9 {
    padding: 0 3px;
  }
  
  /* Giảm padding cho card */
  .card-body {
    padding: 0.5rem;
  }
  
  .card-header {
    padding: 0.5rem;
  }
  
  /* Giảm margin giữa các hàng */
  .row.mb-2 {
    margin-bottom: 0.5rem !important;
  }
  
  .mb-3 {
    margin-bottom: 0.5rem !important;
  }
  
  .mb-4 {
    margin-bottom: 0.75rem !important;
  }
  
  /* Điều chỉnh alert */
  .alert {
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
  }
  
  /* Điều chỉnh spinner */
  .spinner-border {
    width: 1.5rem;
    height: 1.5rem;
  }
}

/* Dark mode */
body.dark-mode {
  background-color: #1a1a1a;
  color: #f8f9fa;
}

body.dark-mode .navbar,
body.dark-mode .card,
body.dark-mode .table {
  background-color: #252525;
  color: #f8f9fa;
}

body.dark-mode .card-header {
  border-bottom-color: rgba(255, 255, 255, 0.05);
}

body.dark-mode .table tbody td {
  border-color: rgba(255, 255, 255, 0.05);
}

body.dark-mode .table-striped tbody tr:nth-of-type(odd) {
  background-color: rgba(255, 255, 255, 0.02);
}

body.dark-mode .form-control {
  background-color: #333;
  border-color: rgba(255, 255, 255, 0.1);
  color: #f8f9fa;
}

body.dark-mode .theme-toggle i {
  color: #f8f9fa;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.card, .alert, .table-responsive {
  animation: fadeIn 0.5s ease-out;
}