*{margin:0;padding:0;box-sizing:border-box;font-family:'Segoe UI',sans-serif}
body{background:#f0f8ff;color:#333}
.login-container{height:100vh;display:flex;justify-content:center;align-items:center;background:url('https://images.unsplash.com/photo-1507525428034-b723cf961d3e?auto=format&fit=crop&w=1650&q=80') center/cover}
.login-box{background:rgba(255,255,255,.9);padding:2rem;border-radius:8px;box-shadow:0 4px 10px rgba(0,0,0,.2);width:320px;text-align:center}
.login-header i{font-size:2.5rem;color:#0077b6}
.login-form .form-group{margin:1rem 0;position:relative}
.login-form .form-group i{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:#0077b6}
.login-form input{width:100%;padding:.75rem .75rem .75rem 2.5rem;border:1px solid #ccc;border-radius:4px}
.btn-login{background:#0077b6;color:#fff;border:none;padding:.75rem 1.5rem;border-radius:4px;cursor:pointer;width:100%;margin-top:1rem}
.btn-login:hover{background:#005f8d}
.sidebar{position:fixed;left:0;top:0;height:100vh;width:220px;background:#023e8a;color:#fff;padding-top:1rem;display:flex;flex-direction:column}
.sidebar-header{display:flex;flex-direction:column;align-items:center;margin-bottom:2rem}
.sidebar-header h3{margin-top:.5rem;font-size:1.2rem}
.sidebar-menu{list-style:none;width:100%}
.sidebar-menu li{width:100%}
.nav-link{display:flex;align-items:center;padding:.75rem 1rem;color:#fff;text-decoration:none;width:100%}
.nav-link i{margin-right:.75rem}
.nav-link:hover,.nav-link.active{background:#0077b6}
.main-content{margin-left:220px;padding:2rem}
.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}
.content-section{display:none}
.content-section.active{display:block}
.stat-card{background:#fff;border-radius:8px;padding:1rem;display:flex;align-items:center;box-shadow:0 2px 6px rgba(0,0,0,.1)}
.stat-card i{font-size:2rem;margin-right:1rem;color:#0077b6}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem}
.table-container{overflow-x:auto;background:#fff;border-radius:8px;padding:1rem;box-shadow:0 2px 6px rgba(0,0,0,.1)}
.table-container table{width:100%;border-collapse:collapse}
.table-container th,.table-container td{padding:.75rem;border-bottom:1px solid #eee;text-align:left}
.btn-primary{background:#0077b6;color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer}
.btn-secondary{background:#ccc;color:#333;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer}
.modal{display:none;position:fixed;left:0;top:0;width:100%;height:100%;background:rgba(0,0,0,.5);justify-content:center;align-items:center}
.modal-content{background:#fff;padding:2rem;border-radius:8px;width:90%;max-width:500px;position:relative}
.modal-content .close{position:absolute;right:1rem;top:1rem;font-size:1.5rem;cursor:pointer}
@media(max-width:768px){.sidebar{width:60px}.sidebar-header h3{display:none}.sidebar-menu li a span{display:none}.main-content{margin-left:60px}}