/* Özel CSS Stilleri */

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --light-bg: #f8f9fa;
    --dark-text: #2c3e50;
  }
  
  body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-bg);
    color: var(--dark-text);
  }
  
  /* Login Sayfası */
  .login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  }
  
  .login-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
    max-width: 400px;
    width: 100%;
  }
  
  .login-header {
    background: var(--primary-color);
    color: white;
    padding: 2rem;
    text-align: center;
  }
  
  .login-body {
    padding: 2rem;
  }
  
  /* Sidebar */
  .sidebar {
    background: var(--primary-color);
    min-height: 100vh;
    padding: 0;
  }
  
  .sidebar .nav-link {
    color: rgba(255,255,255,0.8);
    padding: 1rem 1.5rem;
    border-radius: 0;
    transition: all 0.3s ease;
  }
  
  .sidebar .nav-link:hover,
  .sidebar .nav-link.active {
    background-color: var(--secondary-color);
    color: white;
  }
  
  .sidebar .nav-link i {
    margin-right: 0.5rem;
    width: 20px;
  }
  
  /* Dashboard Cards */
  .dashboard-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
  }
  
  .dashboard-card:hover {
    transform: translateY(-2px);
  }
  
  .card-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1rem;
  }
  
  .card-icon.revenue {
    background: var(--success-color);
  }
  
  .card-icon.expense {
    background: var(--danger-color);
  }
  
  .card-icon.profit {
    background: var(--secondary-color);
  }
  
  .card-icon.vat {
    background: var(--warning-color);
  }
  
  /* Tables */
  .table-responsive {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: hidden;
  }
  
  .table thead th {
    background: var(--primary-color);
    color: white;
    border: none;
    font-weight: 600;
  }
  
  .table tbody tr:hover {
    background-color: rgba(52, 152, 219, 0.1);
  }
  
  /* Forms */
  .form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
  }
  
  .btn-primary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
  }
  
  .btn-primary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
  }
  
  /* Header */
  .main-header {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem 0;
    margin-bottom: 2rem;
  }
  
  /* Responsive */
  @media (max-width: 768px) {
    .sidebar {
        min-height: auto;
    }
    
    .dashboard-card {
        margin-bottom: 1rem;
    }
  }
  
  /* Custom Utilities */
  .text-primary-custom {
    color: var(--primary-color) !important;
  }
  
  .bg-primary-custom {
    background-color: var(--primary-color) !important;
  }
  
  .border-primary-custom {
    border-color: var(--primary-color) !important;
  }