body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background-color: #f0f2f5; margin: 0; display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.form-container, .admin-container { background: #fff; padding: 30px 40px; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); width: 100%; max-width: 400px; }
.admin-container { max-width: 800px; }
h1 { color: #333; text-align: center; margin-bottom: 25px; }
input[type="text"], input[type="password"] { width: 100%; padding: 12px; margin-bottom: 15px; border: 1px solid #ddd; border-radius: 4px; box-sizing: border-box; font-size: 16px; }
button { width: 100%; padding: 12px; background-color: #007bff; color: white; border: none; border-radius: 4px; font-size: 16px; cursor: pointer; transition: background-color 0.2s; }
button:hover { background-color: #0056b3; }
.error, .success { text-align: center; padding: 10px; margin-bottom: 15px; border-radius: 4px; }
.error { background-color: #f8d7da; color: #721c24; }
.success { background-color: #d4edda; color: #155724; }
.extra-links { text-align: center; margin-top: 20px; color: #666; }
a { color: #007bff; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Admin Page Specific */
.admin-container .header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.admin-container .header h1 { margin: 0; text-align: left; }
.admin-container hr { border: 0; height: 1px; background-color: #eee; margin: 25px 0; }
.form-section { margin-bottom: 20px; }
.choice-section { border: 1px solid #e9e9e9; padding: 20px; border-radius: 5px; margin-top: 15px; }
.choice-section h4 { margin-top: 0; }
.choice-section small { font-weight: normal; color: #777; }
.message { text-align: left; }
label { display: block; font-weight: bold; margin-bottom: 5px; color: #555; }