*{margin:0;padding:0;box-sizing:border-box;}
:root{
  --primary:#FF6B35;--primary-d:#E5521E;--primary-l:#FFF0EB;
  --gold:#F5A623;--gold-l:#FFF8E6;
  --success:#07C160;--warning:#F5A623;--danger:#E74C3C;
  --bg:#F0F2F5;--sidebar-bg:#1A1A2E;--card:#fff;
  --text:#1A1A1A;--text2:#666;--text3:#999;
  --border:#E8E8E8;--radius:10px;
  --sidebar-w:220px;
}
body{font-family:-apple-system,BlinkMacSystemFont,'PingFang SC',sans-serif;background:var(--bg);color:var(--text);}

/* ——— Login ——— */
#login-screen{position:fixed;inset:0;background:linear-gradient(135deg,#1A1A2E,#16213E);display:flex;align-items:center;justify-content:center;z-index:999;}
.login-box{background:#fff;border-radius:16px;padding:48px;width:400px;box-shadow:0 20px 60px rgba(0,0,0,0.3);}
.login-logo{text-align:center;margin-bottom:32px;}
.login-logo h1{font-size:28px;color:var(--text);margin-top:12px;}
.login-logo p{color:var(--text2);font-size:14px;margin-top:4px;}
.form-group{margin-bottom:20px;}
.form-group label{display:block;font-size:14px;color:var(--text2);margin-bottom:8px;}
.form-group input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:8px;font-size:15px;outline:none;transition:border-color .2s;}
.form-group input:focus{border-color:var(--primary);}
.login-btn{width:100%;padding:14px;background:linear-gradient(135deg,#FF6B35,#FF9A42);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;margin-top:8px;}
.login-btn:hover{opacity:.9;}
.login-err{color:var(--danger);font-size:13px;text-align:center;margin-top:12px;min-height:18px;}

/* ——— Layout ——— */
#app{display:none;height:100vh;overflow:hidden;}
#app.show{display:flex;}
.sidebar{width:var(--sidebar-w);background:var(--sidebar-bg);display:flex;flex-direction:column;flex-shrink:0;overflow-y:auto;}
.sidebar-logo{padding:24px 20px 20px;border-bottom:1px solid rgba(255,255,255,0.08);}
.sidebar-logo h2{font-size:18px;font-weight:700;color:#fff;}
.sidebar-logo p{font-size:12px;color:rgba(255,255,255,0.4);margin-top:2px;}
.nav-group{padding:12px 0;}
.nav-group-title{font-size:11px;color:rgba(255,255,255,0.3);padding:8px 20px 4px;text-transform:uppercase;letter-spacing:1px;}
.nav-item{display:flex;align-items:center;gap:10px;padding:11px 20px;color:rgba(255,255,255,0.65);cursor:pointer;font-size:14px;transition:all .15s;}
.nav-item:hover{background:rgba(255,255,255,0.06);color:#fff;}
.nav-item.active{background:rgba(255,107,53,0.2);color:var(--primary);border-right:3px solid var(--primary);}
.nav-icon{width:18px;text-align:center;font-size:16px;}
.sidebar-footer{margin-top:auto;padding:16px 20px;border-top:1px solid rgba(255,255,255,0.08);}
.logout-btn{width:100%;padding:10px;background:rgba(255,255,255,0.06);color:rgba(255,255,255,0.6);border:none;border-radius:6px;cursor:pointer;font-size:13px;}
.logout-btn:hover{background:rgba(255,255,255,0.1);color:#fff;}

/* ——— Main ——— */
.main{flex:1;display:flex;flex-direction:column;overflow:hidden;}
.topbar{background:#fff;border-bottom:1px solid var(--border);padding:0 28px;height:56px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;}
.topbar-title{font-size:16px;font-weight:600;color:var(--text);}
.topbar-right{display:flex;align-items:center;gap:16px;}
.admin-badge{font-size:13px;color:var(--text2);}
.content{flex:1;overflow-y:auto;padding:24px;}

/* ——— Cards ——— */
.card{background:var(--card);border-radius:var(--radius);padding:20px;box-shadow:0 1px 4px rgba(0,0,0,.06);}
.card-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px;}
.page{display:none;}
.page.active{display:block;}

/* ——— Stats Grid ——— */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:20px;}
.stat-card{background:var(--card);border-radius:var(--radius);padding:20px;box-shadow:0 1px 4px rgba(0,0,0,.06);position:relative;overflow:hidden;}
.stat-card::before{content:'';position:absolute;right:-10px;top:-10px;width:80px;height:80px;border-radius:50%;opacity:.08;}
.stat-card.orange::before{background:var(--primary);}
.stat-card.gold::before{background:var(--gold);}
.stat-card.green::before{background:var(--success);}
.stat-card.blue::before{background:#1A9BF5;}
.stat-label{font-size:13px;color:var(--text2);margin-bottom:8px;}
.stat-value{font-size:28px;font-weight:700;color:var(--text);}
.stat-sub{font-size:12px;color:var(--text3);margin-top:4px;}
.stat-icon{position:absolute;right:16px;top:16px;font-size:24px;opacity:.3;}

/* ——— Table ——— */
.table-wrap{overflow-x:auto;}
table{width:100%;border-collapse:collapse;font-size:13px;}
th{background:#FAFAFA;padding:11px 14px;text-align:left;font-weight:500;color:var(--text2);border-bottom:1px solid var(--border);white-space:nowrap;}
td{padding:12px 14px;border-bottom:1px solid var(--border);color:var(--text);vertical-align:middle;}
tr:last-child td{border-bottom:none;}
tr:hover td{background:#FAFAFA;}

/* ——— Badges ——— */
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:500;}
.badge-orange{background:var(--primary-l);color:var(--primary);}
.badge-gold{background:var(--gold-l);color:#B8860B;}
.badge-green{background:#E8F8EF;color:#059952;}
.badge-gray{background:#F0F0F0;color:var(--text3);}
.badge-red{background:#FDECEA;color:var(--danger);}
.badge-blue{background:#E6F3FF;color:#1A9BF5;}

/* ——— Buttons ——— */
.btn{padding:7px 14px;border-radius:6px;border:none;cursor:pointer;font-size:13px;font-weight:500;transition:opacity .15s;}
.btn:hover{opacity:.85;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-success{background:var(--success);color:#fff;}
.btn-danger{background:var(--danger);color:#fff;}
.btn-default{background:#F0F0F0;color:var(--text2);}
.btn-sm{padding:5px 10px;font-size:12px;}
.btn-group{display:flex;gap:6px;}

/* ——— Toolbar ——— */
.toolbar{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;align-items:center;}
.toolbar input,.toolbar select{padding:8px 12px;border:1px solid var(--border);border-radius:6px;font-size:13px;outline:none;background:#fff;}
.toolbar input:focus,.toolbar select:focus{border-color:var(--primary);}
.toolbar input{width:200px;}

/* ——— Pagination ——— */
.pagination{display:flex;justify-content:flex-end;align-items:center;gap:8px;margin-top:16px;font-size:13px;color:var(--text2);}
.pagination button{padding:5px 10px;border:1px solid var(--border);border-radius:4px;background:#fff;cursor:pointer;font-size:13px;}
.pagination button:hover{border-color:var(--primary);color:var(--primary);}
.pagination button:disabled{opacity:.4;cursor:default;}

/* ——— Chart ——— */
.chart-row{display:grid;grid-template-columns:2fr 1fr;gap:16px;margin-bottom:20px;}
.mini-bar-chart{display:flex;align-items:flex-end;gap:6px;height:120px;padding-top:16px;}
.mini-bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;}
.mini-bar{width:100%;border-radius:3px 3px 0 0;background:var(--primary);opacity:.8;min-height:4px;transition:height .3s;}
.mini-bar-label{font-size:10px;color:var(--text3);}

/* ——— Modal ——— */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;z-index:500;display:none;}
.modal-mask.show{display:flex;}
.modal{background:#fff;border-radius:12px;padding:28px;width:480px;max-width:90vw;max-height:80vh;overflow-y:auto;}
.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;}
.modal-title{font-size:16px;font-weight:600;}
.modal-close{cursor:pointer;font-size:20px;color:var(--text3);line-height:1;}
.modal-footer{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;}
.modal .form-group{margin-bottom:14px;}
.modal .form-group label{display:block;font-size:13px;color:var(--text2);margin-bottom:6px;}
.modal .form-group input,.modal .form-group select,.modal .form-group textarea{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px;outline:none;}
.modal .form-group input:focus,.modal .form-group select:focus,.modal .form-group textarea:focus{border-color:var(--primary);}
.modal .form-group textarea{resize:vertical;min-height:80px;}

/* ——— Toast ——— */
.toast{position:fixed;top:24px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,.75);color:#fff;padding:10px 20px;border-radius:20px;font-size:14px;z-index:9999;transition:opacity .3s;pointer-events:none;}
.toast.hide{opacity:0;}