body { font-family: 'Segoe UI', Arial, sans-serif; background-color: #f4f6f9; color: #333; margin: 0; padding: 20px; }
.container { max-width: 1000px; margin: 0 auto; background: white; padding: 30px; border-radius: 8px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); }
h1, h2, h3 { color: #2c3e50; border-bottom: 2px solid #ecf0f1; padding-bottom: 10px; }
table { width: 100%; border-collapse: collapse; margin-top: 20px; margin-bottom: 30px; }
th, td { padding: 12px; text-align: left; border-bottom: 1px solid #ddd; }
th { background-color: #34495e; color: white; }
tr:hover { background-color: #f5f5f5; }
.btn { background-color: #3498db; color: white; padding: 10px 15px; border: none; border-radius: 4px; cursor: pointer; text-decoration: none; display: inline-block; }
.btn:hover { background-color: #2980b9; }
.btn-danger { background-color: #e74c3c; }
.btn-danger:hover { background-color: #c0392b; }
.form-group { margin-bottom: 15px; }
label { display: block; margin-bottom: 5px; font-weight: bold; }
input, select { width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; }
.nav-links { margin-bottom: 20px; text-align: right; }
.nav-links a { margin-left: 15px; color: #3498db; text-decoration: none; font-weight: bold; }
.badge { padding: 5px 10px; border-radius: 4px; color: white; font-weight: bold; font-size: 0.9em; }
.badge-success { background-color: #2ecc71; }
.badge-danger { background-color: #e74c3c; }
.badge-info { background-color: #9b59b6; }