body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: #f4f7f6; margin: 0; padding: 40px; }
.center-wrapper { display: flex; justify-content: center; align-items: center; height: 80vh; padding: 0; }
.card { background: white; padding: 40px; border-radius: 12px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); max-width: 700px; margin: 0 auto; }
.card-center { text-align: center; max-width: 500px; }
h1, h2, h3 { color: #2c3e50; }
p { color: #555; font-size: 16px; line-height: 1.5; }

/* Buttons */
.btn { display: inline-block; padding: 12px 24px; text-decoration: none; border-radius: 6px; font-size: 16px; font-weight: bold; color: white; transition: opacity 0.3s; cursor: pointer; border: none; text-align: center; margin-bottom: 10px; }
.btn:hover { opacity: 0.9; }
.btn-primary { background-color: #0078D4; }
.btn-submit { background-color: #28a745; display: block; }
.btn-view { background-color: #17a2b8; display: block; }
.btn-admin { background-color: #dc3545; display: block; }
.btn-secondary { background-color: #6c757d; }

.tenant-info { margin-top: 30px; font-size: 12px; color: #999; }

/* Tables and Forms */
table { width: 100%; border-collapse: collapse; margin-top: 20px; }
th, td { padding: 12px; border: 1px solid #ddd; text-align: left; }
th { background-color: #f8f9fa; }
form { display: flex; flex-direction: column; gap: 15px; }
input[type="text"], select, textarea { padding: 10px; border: 1px solid #ccc; border-radius: 4px; font-family: inherit; width: 100%; box-sizing: border-box; }