:root{--bg-primary:#0d1117;--bg-secondary:#161b22;--bg-tertiary:#1c2128;--border-color:#30363d;--text-primary:#c9d1d9;--text-secondary:#8b949e;--accent-blue:#58a6ff;--accent-green:#3fb950;--accent-yellow:#d29922;--accent-red:#f85149}
*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh}
.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.login-box{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:40px;width:100%;max-width:400px}.login-box h1{color:var(--accent-blue);text-align:center;margin-bottom:10px}.login-box .subtitle{color:var(--text-secondary);text-align:center;margin-bottom:30px}
.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:500}.form-control{width:100%;padding:12px 16px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:8px;color:var(--text-primary);font-size:16px}.form-control:focus{outline:none;border-color:var(--accent-blue)}
.btn{display:inline-block;padding:12px 24px;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer}.btn-primary{background:var(--accent-blue);color:#fff;width:100%}.btn-primary:hover{background:#4c94e8}.btn-success{background:var(--accent-green);color:#fff}.btn-danger{background:var(--accent-red);color:#fff}
.alert{padding:12px 16px;border-radius:8px;margin-bottom:20px}.alert-error{background:rgba(248,81,73,0.1);border:1px solid var(--accent-red);color:var(--accent-red)}.alert-success{background:rgba(63,185,80,0.1);border:1px solid var(--accent-green);color:var(--accent-green)}
.dashboard{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--bg-secondary);border-right:1px solid var(--border-color);padding:20px 0;position:fixed;height:100vh}.sidebar-header{padding:0 20px 20px;border-bottom:1px solid var(--border-color);margin-bottom:20px}.sidebar-header h2{color:var(--accent-blue);font-size:18px}.sidebar-header .user-info{color:var(--text-secondary);font-size:13px;margin-top:5px}
.sidebar-menu{list-style:none}.sidebar-menu li a{display:flex;align-items:center;padding:12px 20px;color:var(--text-primary);text-decoration:none;border-left:3px solid transparent}.sidebar-menu li a:hover,.sidebar-menu li a.active{background:var(--bg-tertiary);border-left-color:var(--accent-blue);color:var(--accent-blue)}.sidebar-menu li a .icon{margin-right:12px}
.main-content{flex:1;margin-left:260px;padding:30px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-bottom:30px}.stat-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:24px}.stat-card .label{color:var(--text-secondary);font-size:14px;margin-bottom:8px}.stat-card .value{font-size:28px;font-weight:700}.stat-card.green .value{color:var(--accent-green)}.stat-card.red .value{color:var(--accent-red)}.stat-card.blue .value{color:var(--accent-blue)}.stat-card.yellow .value{color:var(--accent-yellow)}
.table-container{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;overflow:hidden;margin-bottom:30px}.table-header{display:flex;justify-content:space-between;align-items:center;padding:20px;border-bottom:1px solid var(--border-color)}table{width:100%;border-collapse:collapse}th,td{padding:14px 20px;text-align:left;border-bottom:1px solid var(--border-color)}th{background:var(--bg-tertiary);font-weight:600;color:var(--text-secondary);text-transform:uppercase}tr:hover{background:var(--bg-tertiary)}
.badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600}.badge-success{background:rgba(63,185,80,0.2);color:var(--accent-green)}.badge-danger{background:rgba(248,81,73,0.2);color:var(--accent-red)}.badge-warning{background:rgba(210,153,34,0.2);color:var(--accent-yellow)}
@media(max-width:768px){.sidebar{width:100%;height:auto;position:relative}.main-content{margin-left:0}.dashboard{flex-direction:column}}