* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: Arial, sans-serif; }

.admin-wrapper { display: grid; grid-template-columns: 250px 1fr; min-height: 100vh; }
.sidebar { background: #2c3e50; color: #fff; padding: 20px; }
.sidebar h2 { margin-bottom: 30px; }
.sidebar nav a { display: block; color: #fff; text-decoration: none; padding: 10px; margin: 5px 0; border-radius: 5px; }
.sidebar nav a:hover { background: #34495e; }

.admin-content { padding: 30px; }
h1 { margin-bottom: 30px; }

.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 40px; }
.stat-card { background: #3498db; color: #fff; padding: 20px; border-radius: 8px; text-align: center; }
.stat-number { font-size: 36px; font-weight: bold; }

.admin-form { background: #f4f4f4; padding: 20px; margin-bottom: 30px; border-radius: 5px; }
.admin-form input, .admin-form select, .admin-form textarea { width: 100%; padding: 10px; margin: 10px 0; }
.admin-form button { padding: 10px 30px; background: #27ae60; color: #fff; border: none; cursor: pointer; }

table { width: 100%; border-collapse: collapse; }
table th, table td { padding: 12px; text-align: left; border-bottom: 1px solid #ddd; }
table th { background: #34495e; color: #fff; }
table a { margin-right: 10px; color: #3498db; text-decoration: none; }

.login-page { display: flex; justify-content: center; align-items: center; min-height: 100vh; background: #ecf0f1; }
.login-box { background: #fff; padding: 40px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); width: 350px; }
.login-box h2 { margin-bottom: 20px; text-align: center; }
.login-box input { width: 100%; padding: 12px; margin: 10px 0; border: 1px solid #ddd; }
.login-box button { width: 100%; padding: 12px; background: #3498db; color: #fff; border: none; cursor: pointer; }
.error { background: #e74c3c; color: #fff; padding: 10px; margin-bottom: 15px; border-radius: 5px; }