*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#0d47a1;--primary-light:#1565c0;--accent:#ff6f00;--success:#2e7d32;--danger:#c62828;--bg:#f0f2f5;--card:#fff;--text:#333;--text-light:#666;--border:#e0e0e0;--cold:#00bcd4;--cold-bg:#e0f7fa}
body{font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;background:var(--bg);color:var(--text);min-height:100vh}
a{color:var(--primary);text-decoration:none}

/* Login */
.login-page{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#0d47a1,#1565c0,#0d47a1)}
.login-box{background:#fff;border-radius:12px;padding:40px;width:380px;max-width:95vw;box-shadow:0 20px 60px rgba(0,0,0,0.2);text-align:center}
.login-box h2{font-size:22px;color:var(--primary);margin-bottom:6px;letter-spacing:2px}
.login-box .sub{font-size:12px;color:#999;margin-bottom:24px}
.login-box input{width:100%;padding:12px;margin-bottom:14px;border:1px solid #ddd;border-radius:8px;font-size:14px;outline:none}
.login-box input:focus{border-color:var(--primary)}
.login-box button{width:100%;padding:12px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:16px;cursor:pointer;font-weight:700;letter-spacing:2px}
.login-box button:hover{background:var(--primary-light)}
.login-box .hint{font-size:11px;color:#aaa;margin-top:12px}

/* Layout */
.app-header{background:linear-gradient(90deg,#0d47a1,#1565c0);color:#fff;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:56px;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,0.15)}
.app-header h1{font-size:17px;font-weight:700;letter-spacing:2px}
.app-header .user-info{font-size:13px;display:flex;align-items:center;gap:10px}
.app-header .btn-logout{background:rgba(255,255,255,0.15);color:#fff;border:none;padding:6px 16px;border-radius:6px;cursor:pointer;font-size:12px}

/* Nav Tabs */
.nav-tabs{display:flex;gap:0;background:var(--primary);padding:0 16px;overflow-x:auto;flex-wrap:nowrap}
.nav-tabs .tab{padding:10px 14px;color:rgba(255,255,255,0.7);font-size:12px;cursor:pointer;white-space:nowrap;border-radius:8px 8px 0 0;transition:all .2s;font-weight:500;border:none;background:transparent}
.nav-tabs .tab:hover{color:#fff;background:rgba(255,255,255,0.1)}
.nav-tabs .tab.active{color:#333;background:#fff;font-weight:700}

/* Main Content */
.main-content{padding:16px;max-width:1400px;margin:0 auto}

/* Cards */
.card{background:var(--card);border-radius:10px;padding:20px;margin-bottom:16px;box-shadow:0 1px 4px rgba(0,0,0,0.06)}
.card-title{font-size:15px;font-weight:700;color:var(--primary);margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid #f0f0f0;display:flex;align-items:center;justify-content:space-between}
.card-title .actions{display:flex;gap:8px}

/* Buttons */
.btn{padding:8px 18px;border-radius:6px;border:none;cursor:pointer;font-size:13px;font-weight:600;letter-spacing:1px;transition:all .2s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-light)}
.btn-accent{background:var(--accent);color:#fff}
.btn-success{background:var(--success);color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn-sm{padding:5px 12px;font-size:11px}

/* Tables */
table{width:100%;border-collapse:collapse;font-size:12px}
th{background:#f5f7fa;padding:10px 8px;text-align:left;font-weight:700;color:#555;border-bottom:2px solid #e0e0e0;white-space:nowrap}
td{padding:9px 8px;border-bottom:1px solid #f0f0f0}
tr:hover td{background:#fafbfc}
.badge{display:inline-block;padding:3px 10px;border-radius:12px;font-size:11px;font-weight:600}
.badge-primary{background:#e3f2fd;color:#1565c0}
.badge-accent{background:#fff3e0;color:#e65100}
.badge-success{background:#e8f5e9;color:#2e7d32}
.badge-danger{background:#ffebee;color:#c62828}
.badge-cold{background:#e0f7fa;color:#00838f}

/* Forms */
.form-group{margin-bottom:12px}
.form-group label{display:block;font-size:12px;color:#666;margin-bottom:4px;font-weight:600}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:9px 12px;border:1px solid #ddd;border-radius:6px;font-size:13px;outline:none;font-family:inherit}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary)}
.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:200;display:flex;align-items:center;justify-content:center}
.modal{background:#fff;border-radius:12px;padding:24px;width:600px;max-width:95vw;max-height:85vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,0.3)}
.modal h3{font-size:17px;margin-bottom:16px;color:var(--primary)}

/* Status timeline */
.timeline{padding-left:20px;border-left:2px solid #e0e0e0}
.tl-item{position:relative;padding:8px 0 8px 20px}
.tl-item::before{content:'';position:absolute;left:-27px;top:14px;width:10px;height:10px;background:var(--primary);border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 2px var(--primary)}
.tl-item .tl-time{font-size:11px;color:#999}
.tl-item .tl-desc{font-size:12px;color:#333}

/* Cold chain temp indicator */
.temp-bar{display:flex;align-items:center;gap:8px;padding:6px 12px;background:var(--cold-bg);border-radius:6px;font-size:12px;font-weight:600}
.temp-bar.abnormal{background:#ffebee;color:var(--danger)}

/* Stats grid */
.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:16px}
.stat-card{background:var(--card);border-radius:10px;padding:16px;text-align:center;box-shadow:0 1px 4px rgba(0,0,0,0.06)}
.stat-card .num{font-size:28px;font-weight:900;color:var(--primary)}
.stat-card .em{font-size:22px;margin-bottom:2px}
.stat-card .label{font-size:11px;color:#999;margin-top:4px}

/* Responsive */
@media(max-width:768px){
  .app-header h1{font-size:14px}
  .nav-tabs .tab{padding:8px 10px;font-size:11px}
  .main-content{padding:10px}
  .card{padding:14px}
  .form-row{grid-template-columns:1fr}
  table{font-size:10px}
  th,td{padding:6px 4px}
}