body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background-color: #f4f7fa; display: flex; justify-content: center; align-items: center; min-height: 100vh; margin: 0; padding: 20px; box-sizing: border-box; }
.container { background: #fff; padding: 30px 40px; border-radius: 12px; box-shadow: 0 5px 25px rgba(0,0,0,0.1); width: 100%; max-width: 550px; }
h1 { margin-top: 0; color: #333; }
p { color: #666; line-height: 1.6; }
.content { background-color: #f8f9fa; padding: 20px; border-radius: 8px; margin-top: 20px; }
ul { list-style: none; padding: 0; }
li { padding: 8px 0; border-bottom: 1px solid #e9ecef; }
li:last-child { border-bottom: none; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; color: #495057; }
.form-group input { width: 100%; padding: 12px; border: 1px solid #ced4da; border-radius: 8px; box-sizing: border-box; font-size: 16px; }
.form-group input:focus { border-color: #80bdff; outline: 0; box-shadow: 0 0 0 .2rem rgba(0,123,255,.25); }
.button { display: inline-block; background-color: #0d6efd; color: white; padding: 12px 25px; border: none; border-radius: 8px; cursor: pointer; text-decoration: none; font-size: 16px; font-weight: 500; width: 100%; text-align: center; }
.button:hover { background-color: #0b5ed7; }
.message { padding: 15px; margin-bottom: 20px; border-radius: 8px; }
.message.success { background-color: #d1e7dd; color: #0f5132; border: 1px solid #badbcc; }
.message.error { background-color: #f8d7da; color: #842029; border: 1px solid #f5c2c7; }
.warning { border: 1px solid #fff3cd; background: #fff9e6; padding: 15px; border-radius: 8px; margin-top: 25px; }
.warning h3 { margin-top: 0; color: #664d03; }
.success { color: #0f5132; font-weight: bold; }
.error { color: #842029; font-weight: bold; }