*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Segoe UI',Tahoma,sans-serif;background:#f5f5f5;color:#333}
.login-page{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}
.login-container{background:white;padding:40px;border-radius:10px;box-shadow:0 10px 40px rgba(0,0,0,0.2);text-align:center;width:100%;max-width:400px}
.login-container h1{margin-bottom:10px;color:#667eea}
.login-container input{width:100%;padding:12px;margin:10px 0;border:1px solid #ddd;border-radius:5px;font-size:14px}
.login-container button{width:100%;padding:12px;background:#667eea;color:white;border:none;border-radius:5px;font-size:16px;cursor:pointer}
.login-container button:hover{background:#5568d3}
.error{background:#ffebee;color:#c62828;padding:10px;border-radius:5px;margin-bottom:15px}
header{background:#667eea;color:white;padding:15px 30px;display:flex;justify-content:space-between;align-items:center}
header nav a{color:white;text-decoration:none;margin-left:20px;padding:8px 15px;border-radius:5px}
header nav a:hover{background:rgba(255,255,255,0.2)}
.container{max-width:1400px;margin:30px auto;padding:0 20px}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-bottom:30px}
.stat-card{background:white;padding:25px;border-radius:10px;box-shadow:0 2px 10px rgba(0,0,0,0.1)}
.stat-card h3{color:#666;font-size:14px;margin-bottom:10px}
.stat-value{font-size:28px;font-weight:bold;color:#667eea}
.stat-label{color:#999;font-size:13px;margin-top:5px}
.filters{background:white;padding:20px;border-radius:10px;margin-bottom:20px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.filters select,.filters input{padding:10px;border:1px solid #ddd;border-radius:5px;font-size:14px}
.filters button,.btn{padding:10px 20px;background:#667eea;color:white;border:none;border-radius:5px;cursor:pointer;text-decoration:none;font-size:14px}
.data-table{width:100%;background:white;border-collapse:collapse;border-radius:10px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,0.1)}
.data-table th,.data-table td{padding:12px 15px;text-align:left;border-bottom:1px solid #eee}
.data-table th{background:#667eea;color:white;font-weight:600}
.data-table tr:hover{background:#f5f5f5}
.info{margin-top:15px;color:#666;font-size:14px}