body { min-height: 100vh; background-color: #f5f7fa; }
.sidebar { width: 220px; position: fixed; top: 0; left: 0; height: 100vh; background: #1e293b; color: #fff; z-index: 1000; }
.sidebar .brand { padding: 16px 20px; font-size: 18px; font-weight: 700; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar .nav-link { color: rgba(255,255,255,0.7); padding: 10px 20px; font-size: 14px; border-radius: 0; }
.sidebar .nav-link:hover, .sidebar .nav-link.active { color: #fff; background: rgba(255,255,255,0.1); }
.sidebar .nav-link i { margin-right: 8px; }
.main-content { margin-left: 220px; padding: 24px; }
.navbar-top { background: #fff; padding: 12px 24px; border-bottom: 1px solid #e2e8f0; display: flex; justify-content: space-between; align-items: center; }
.card-stat { border: none; border-radius: 10px; box-shadow: 0 1px 3px rgba(0,0,0,0.08); }
.status-badge { font-size: 12px; padding: 2px 8px; border-radius: 12px; }

.login-body { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #1e293b 0%, #334155 100%); }
.login-card { width: 400px; border: none; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,0.3); }
.login-brand { font-size: 24px; font-weight: 700; color: #1e293b; }