body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; margin: 0; padding: 20px; background-color: #f0f8ff; }
.container { max-width: 800px; margin: auto; background: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
h1, h2 { color: #2c3e50; border-bottom: 2px solid #3498db; padding-bottom: 10px; margin-top: 30px; }
p { margin-bottom: 15px; }
form { margin-top: 20px; padding: 20px; border: 1px solid #ccc; border-radius: 5px; background-color: #f9f9f9; }
label { display: block; margin-bottom: 8px; font-weight: bold; }
textarea { width: calc(100% - 20px); padding: 10px; border: 1px solid #ddd; border-radius: 4px; resize: vertical; min-height: 100px; box-sizing: border-box; }
input[type="submit"] { background-color: #3498db; color: white; padding: 10px 20px; border: none; border-radius: 5px; cursor: pointer; margin-top: 15px; }
input[type="submit"]:hover { background-color: #2980b9; }
.info-message { margin-top: 20px; padding: 10px; background-color: #d4edda; border: 1px solid #28a745; border-radius: 5px; color: #155724; }
.error-message { margin-top: 20px; padding: 10px; background-color: #f8d7da; border: 1px solid #dc3545; border-radius: 5px; color: #721c24; }
.back-link { display: block; text-align: center; margin-top: 30px; }
.back-link a { color: #3498db; text-decoration: none; font-weight: bold; }
.back-link a:hover { text-decoration: underline; }