:root{--primary:#1e3a8a;--primary-light:#3b82f6;--primary-dark:#172554;--secondary:#f59e0b;--secondary-light:#fbbf24;--bg-main:#f3f4f6;--bg-card:#fff;--text-main:#1f2937;--text-muted:#6b7280;--text-light:#fff;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--info:#3b82f6;--sidebar-width:260px;--header-height:70px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d;--transition:all .3s ease}body{background-color:var(--bg-main);color:var(--text-main);margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}a{color:inherit;text-decoration:none}button{cursor:pointer;background:0 0;border:none;font-family:inherit}input,textarea,select{font-family:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#f1f1f1}::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--primary-light)}.glass{-webkit-backdrop-filter:blur(10px);background:#ffffffb3;border:1px solid #ffffff2e}.btn{border-radius:var(--radius-sm);transition:var(--transition);justify-content:center;align-items:center;padding:.6rem 1.2rem;font-size:.95rem;font-weight:600;display:inline-flex}.btn-primary{background-color:var(--primary);color:#fff;box-shadow:0 4px 14px #1e3a8a63}.btn-primary:hover{background-color:var(--primary-light);transform:translateY(-1px);box-shadow:0 6px 20px #1e3a8a3b}.btn-secondary{background-color:var(--secondary);color:#fff;box-shadow:0 4px 14px #f59e0b63}.btn-secondary:hover{background-color:var(--secondary-light);transform:translateY(-1px)}.btn-danger{background-color:var(--danger);color:#fff}.btn-danger:hover{background-color:#dc2626;transform:translateY(-1px)}.auth-container{background-color:var(--bg-main);width:100vw;height:100vh;display:flex}.auth-left{background:linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);color:#fff;text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;padding:2rem;display:flex}.auth-left h1{text-shadow:0 2px 4px #0003;margin-bottom:1rem;font-size:2.5rem;font-weight:800}.auth-left p{opacity:.9;max-width:400px;font-size:1.1rem}.hien-badge{letter-spacing:1px;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#fff3;border:1px solid #ffffff4d;border-radius:20px;margin-bottom:2rem;padding:.5rem 1rem;font-weight:700}.auth-right{background-color:#fff;flex:1;justify-content:center;align-items:center;display:flex}.auth-box{width:100%;max-width:400px;padding:2.5rem}.auth-box h2{color:var(--primary);margin-bottom:.5rem;font-size:1.8rem}.form-group{margin-bottom:1.5rem}.form-group label{color:var(--text-main);margin-bottom:.5rem;font-size:.9rem;font-weight:600;display:block}.form-control{border-radius:var(--radius-sm);width:100%;transition:var(--transition);background-color:#f9fafb;border:1px solid #d1d5db;padding:.75rem 1rem;font-size:1rem}.form-control:focus{border-color:var(--primary-light);background-color:#fff;outline:none;box-shadow:0 0 0 3px #3b82f633}.btn-block{width:100%;padding:.8rem;font-size:1rem}.admin-layout{width:100vw;height:100vh;display:flex;overflow:hidden}.sidebar{width:var(--sidebar-width);transition:var(--transition);z-index:10;background-color:#fff;border-right:1px solid #e5e7eb;flex-direction:column;display:flex}.sidebar-header{height:var(--header-height);background:linear-gradient(90deg,#f8fafc,#fff);border-bottom:1px solid #e5e7eb;align-items:center;padding:0 1.5rem;display:flex}.sidebar-header h2{color:var(--primary);letter-spacing:-.5px;margin:0;font-size:1.25rem;font-weight:800}.sidebar-menu{flex:1;padding:1.5rem .75rem;overflow-y:auto}.menu-item{color:var(--text-muted);border-radius:var(--radius-md);transition:var(--transition);align-items:center;margin-bottom:.5rem;padding:.75rem 1rem;font-weight:500;display:flex}.menu-item:hover{color:var(--primary);background-color:#f1f5f9}.menu-item.active{color:var(--primary);background-color:#3b82f61a;font-weight:600}.menu-icon{text-align:center;width:24px;margin-right:1rem;font-size:1.25rem}.main-wrapper{background-color:var(--bg-main);flex-direction:column;flex:1;display:flex}.top-header{height:var(--header-height);box-shadow:var(--shadow-sm);z-index:5;background-color:#fff;border-bottom:1px solid #e5e7eb;justify-content:space-between;align-items:center;padding:0 2rem;display:flex}.header-title{color:var(--text-main);margin:0;font-size:1.25rem;font-weight:700}.user-profile{align-items:center;gap:1rem;display:flex}.avatar{background-color:var(--secondary-light);color:#fff;width:40px;height:40px;box-shadow:0 0 0 2px var(--primary-light);border:2px solid #fff;border-radius:50%;justify-content:center;align-items:center;font-size:1.2rem;font-weight:700;display:flex}.user-info{flex-direction:column;display:flex}.user-info .name{color:var(--text-main);font-size:.95rem;font-weight:600}.user-info .role{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-size:.75rem}.content-area{flex:1;padding:2rem;overflow-y:auto}.page-header{justify-content:space-between;align-items:flex-end;margin-bottom:2rem;display:flex}.page-header h1{color:var(--text-main);margin:0 0 .5rem;font-size:1.8rem}.page-header p{color:var(--text-muted);margin:0}.card{border-radius:var(--radius-lg);box-shadow:var(--shadow-md);background:#fff;border:1px solid #00000005;padding:1.5rem}