:root{
  --primary:#4f46e5;--primary-light:#818cf8;--primary-dark:#3730a3;
  --bg:#f1f5f9;--card:#fff;--text:#1e293b;--text2:#64748b;--border:#e2e8f0;
  --success:#10b981;--warning:#f59e0b;--danger:#ef4444;--info:#3b82f6;
  --radius:12px;--shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.06);
  --shadow-lg:0 10px 25px rgba(0,0,0,.1);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);line-height:1.5;min-height:100vh}

/* ===== Login Page ===== */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#1e1b4b 0%,#312e81 50%,#4338ca 100%);position:relative;overflow:hidden}
.login-page::before{content:'';position:absolute;width:600px;height:600px;border-radius:50%;background:rgba(255,255,255,.03);top:-200px;right:-200px}
.login-page::after{content:'';position:absolute;width:400px;height:400px;border-radius:50%;background:rgba(255,255,255,.03);bottom:-150px;left:-100px}
.login-card{background:#fff;border-radius:20px;padding:48px 40px;width:420px;max-width:92vw;box-shadow:0 25px 60px rgba(0,0,0,.3);position:relative;z-index:1;animation:loginFade .6s ease}
@keyframes loginFade{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.login-logo{text-align:center;margin-bottom:32px}
.login-logo h1{font-size:24px;color:var(--text);font-weight:700}
.login-logo p{font-size:13px;color:var(--text2);margin-top:6px}
.login-form .form-group{margin-bottom:18px}
.login-form .form-group label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:6px}
.login-form .form-group input{width:100%;padding:11px 14px 11px 42px;border:1.5px solid var(--border);border-radius:10px;font-size:14px;outline:none;transition:all .2s;background:#f8fafc}
.login-form .form-group input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.12);background:#fff}
.login-form .input-wrap{position:relative}
.login-form .input-wrap svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--text2)}
.login-form .toggle-pw{position:absolute;right:14px;top:50%;transform:translateY(-50%);cursor:pointer;color:var(--text2);background:none;border:none;padding:2px}
.login-form .toggle-pw:hover{color:var(--text)}
.login-btn{width:100%;padding:12px;border:none;border-radius:10px;background:var(--primary);color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s;margin-top:8px}
.login-btn:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px rgba(79,70,229,.4)}
.login-btn:active{transform:translateY(0)}
.login-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}
.login-error{background:#fef2f2;color:#dc2626;padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:16px;display:none;align-items:center;gap:6px}
.login-error.show{display:flex}
.login-hint{text-align:center;margin-top:20px;font-size:12px;color:var(--text2)}
.login-hint b{color:var(--primary)}
.login-attempts{color:var(--danger);font-size:12px;margin-top:8px;text-align:center}

/* ===== App Layout ===== */
.app{display:flex;min-height:100vh;display:none}
.app.show{display:flex}
.sidebar{width:240px;background:linear-gradient(180deg,#1e1b4b 0%,#312e81 100%);color:#fff;padding:0;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:transform .3s;display:flex;flex-direction:column}
.sidebar-header{padding:24px 20px 20px;border-bottom:1px solid rgba(255,255,255,.1)}
.sidebar-header h1{font-size:18px;font-weight:700;letter-spacing:.5px}
.sidebar-header p{font-size:12px;color:rgba(255,255,255,.5);margin-top:4px}
.nav{padding:12px 10px;flex:1}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:8px;cursor:pointer;transition:all .2s;color:rgba(255,255,255,.6);font-size:14px;margin-bottom:2px}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-item.active{background:rgba(255,255,255,.15);color:#fff;font-weight:600}
.nav-item svg{width:20px;height:20px;flex-shrink:0}
.nav-badge{margin-left:auto;background:var(--primary-light);color:#fff;font-size:11px;padding:1px 8px;border-radius:10px;font-weight:600}
.sidebar-footer{padding:12px 10px;border-top:1px solid rgba(255,255,255,.1)}
.sidebar-user{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:8px;transition:background .2s}
.sidebar-user:hover{background:rgba(255,255,255,.08)}
.sidebar-user .avatar{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.15);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}
.sidebar-user .user-info{flex:1;overflow:hidden}
.sidebar-user .user-name{font-size:13px;font-weight:600;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sidebar-user .user-role{font-size:11px;color:rgba(255,255,255,.5)}
.sidebar-user .logout-btn{background:rgba(255,255,255,.1);border:none;color:rgba(255,255,255,.6);width:28px;height:28px;border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}
.sidebar-user .logout-btn:hover{background:rgba(239,68,68,.3);color:#fff}
.main{margin-left:240px;flex:1;padding:24px 32px;min-height:100vh}

/* Top bar */
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.topbar h2{font-size:22px;font-weight:700}
.topbar-actions{display:flex;gap:10px;align-items:center}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;border:none;transition:all .2s;white-space:nowrap}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}
.btn-success{background:var(--success);color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-warning{background:var(--warning);color:#fff}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text2)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{padding:5px 12px;font-size:12px;border-radius:6px}
.btn-xs{padding:3px 8px;font-size:11px;border-radius:4px}

/* Cards */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border)}
.card-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.card-header h3{font-size:15px;font-weight:600}
.card-body{padding:20px}

/* Stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.stat-card{background:var(--card);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);border:1px solid var(--border);display:flex;align-items:center;gap:16px}
.stat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px}
.stat-info .stat-value{font-size:26px;font-weight:700;line-height:1.2}
.stat-info .stat-label{font-size:12px;color:var(--text2);margin-top:2px}

/* Table */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
thead th{background:#f8fafc;padding:10px 14px;text-align:left;font-weight:600;color:var(--text2);font-size:12px;text-transform:uppercase;letter-spacing:.5px;border-bottom:2px solid var(--border);white-space:nowrap}
tbody td{padding:10px 14px;border-bottom:1px solid var(--border);vertical-align:middle}
tbody tr:hover{background:#f8fafc}
tbody tr:last-child td{border-bottom:none}

/* Badge */
.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;white-space:nowrap}
.badge-success{background:#ecfdf5;color:#059669}
.badge-warning{background:#fffbeb;color:#d97706}
.badge-danger{background:#fef2f2;color:#dc2626}
.badge-info{background:#eff6ff;color:#2563eb}
.badge-gray{background:#f1f5f9;color:#64748b}

/* Form */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-group{display:flex;flex-direction:column;gap:4px}
.form-group.full{grid-column:1/-1}
.form-group label{font-size:12px;font-weight:600;color:var(--text2)}
.form-group input,.form-group select,.form-group textarea{padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:13px;outline:none;transition:border-color .2s;background:#fff;font-family:inherit}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.1)}
.form-group textarea{resize:vertical;min-height:60px}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:200;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .2s}
.modal-overlay.show{opacity:1;visibility:visible}
.modal{background:#fff;border-radius:16px;width:90%;max-width:640px;max-height:85vh;overflow-y:auto;box-shadow:0 25px 50px rgba(0,0,0,.2);transform:translateY(20px);transition:transform .2s}
.modal-overlay.show .modal{transform:translateY(0)}
.modal-header{padding:20px 24px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.modal-header h3{font-size:16px;font-weight:700}
.modal-close{width:32px;height:32px;border-radius:8px;border:none;background:transparent;cursor:pointer;font-size:18px;color:var(--text2);display:flex;align-items:center;justify-content:center;transition:background .2s}
.modal-close:hover{background:#f1f5f9}
.modal-body{padding:24px}
.modal-footer{padding:16px 24px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:10px}

/* Search & Filter */
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.search-box{position:relative;flex:1;max-width:320px}
.search-box input{width:100%;padding:8px 12px 8px 36px;border:1px solid var(--border);border-radius:8px;font-size:13px;outline:none}
.search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.1)}
.search-box svg{position:absolute;left:10px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--text2)}
.filter-select{padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:13px;outline:none;background:#fff;min-width:120px}
.filter-select:focus{border-color:var(--primary)}

/* Empty state */
.empty{text-align:center;padding:48px 20px;color:var(--text2)}
.empty svg{width:64px;height:64px;color:#cbd5e1;margin-bottom:12px}
.empty p{font-size:14px}

/* Page hide/show */
.page{display:none}
.page.active{display:block}

/* Toast */
.toast-container{position:fixed;top:24px;right:24px;z-index:300;display:flex;flex-direction:column;gap:8px}
.toast{padding:12px 20px;border-radius:10px;color:#fff;font-size:13px;font-weight:500;box-shadow:var(--shadow-lg);animation:slideIn .3s;min-width:200px}
.toast-success{background:var(--success)}
.toast-error{background:var(--danger)}
.toast-info{background:var(--info)}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* Responsive */
@media(max-width:1024px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0;padding:16px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .topbar{flex-wrap:wrap;gap:10px}
  .login-card{padding:32px 24px}
}

/* Detail view */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 24px}
.detail-item{padding:8px 0}
.detail-item label{font-size:11px;color:var(--text2);text-transform:uppercase;letter-spacing:.5px;display:block}
.detail-item span{font-size:14px;font-weight:500}

/* Animations */
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.animate{animation:fadeUp .3s ease}