:root{
  --primary:#B71C1C;--secondary:#D32F2F;--red:#C62828;--gold:#FFA000;
  --bg:#faf5f5;--card:#fff;--border:#e8e0e0;--text:#333;--gray:#888;--light:#f5eeee;
  --success:#2E7D32;--warning:#F57C00;--danger:#C62828;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei",微软雅黑,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.6}
a{color:var(--secondary);text-decoration:none}
a:hover{color:var(--primary)}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 导航 */
.navbar{background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.08);position:sticky;top:0;z-index:100}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:bold;color:var(--primary)}
.nav-logo img{height:36px}
.nav-links{display:flex;gap:24px;align-items:center}
.nav-links a{color:var(--text);font-size:15px}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.nav-links .btn{color:#fff}
.nav-links .btn:hover{color:#fff}
.hamburger{display:none;font-size:24px;cursor:pointer;background:none;border:none}

/* 按钮 */
.btn{display:inline-block;padding:8px 20px;border-radius:6px;font-size:14px;cursor:pointer;border:none;transition:.2s;text-align:center}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:#8B0000;color:#fff}
.btn-secondary{background:var(--secondary);color:#fff}
.btn-secondary:hover{background:#A02828;color:#fff}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:#8B0000;color:#fff}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-sm{padding:5px 12px;font-size:13px}
.btn-block{display:block;width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* 卡片 */
.card{background:var(--card);border-radius:10px;box-shadow:0 2px 12px rgba(0,0,0,.06);padding:24px;margin-bottom:20px}
.card-title{font-size:18px;font-weight:bold;color:var(--primary);margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--light)}

/* 表格 */
table{width:100%;border-collapse:collapse}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border)}
th{background:var(--light);font-weight:600;color:var(--primary);font-size:13px}
tr:hover{background:#f9fafb}

/* 表单 */
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:6px;font-weight:500;color:#555}
.form-control{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px;transition:.2s}
.form-control:focus{outline:none;border-color:var(--secondary);box-shadow:0 0 0 3px rgba(46,117,182,.1)}
textarea.form-control{resize:vertical;min-height:80px}

/* 状态标签 */
.badge{display:inline-block;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:500}
.badge-idle{background:#e0e0e0;color:#666}
.badge-running{background:#e8f5e9;color:var(--success)}
.badge-maintenance{background:#fff3e0;color:var(--warning)}
.badge-disabled{background:#ffebee;color:var(--danger)}
.badge-pending{background:#fff3e0;color:var(--warning)}
.badge-confirmed{background:#e8f5e9;color:var(--success)}
.badge-rejected{background:#ffebee;color:var(--danger)}

/* 统计卡片 */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.stat-card{background:#fff;border-radius:10px;padding:20px;box-shadow:0 2px 12px rgba(0,0,0,.06);text-align:center}
.stat-card .num{font-size:32px;font-weight:bold;color:var(--primary)}
.stat-card .label{font-size:13px;color:var(--gray);margin-top:4px}
.stat-card.green .num{color:var(--success)}
.stat-card.orange .num{color:var(--warning)}
.stat-card.red .num{color:var(--danger)}

/* 登录页 */
.auth-page{min-height:100vh;display:flex;flex-direction:column;background:linear-gradient(135deg,var(--primary),var(--secondary));padding:20px;position:relative}
.auth-box-wrap{flex:1;display:flex;align-items:center;justify-content:center}
.auth-box{background:#fff;border-radius:16px;padding:40px;width:400px;max-width:100%;box-shadow:0 8px 32px rgba(0,0,0,.15)}
.auth-box h2{text-align:center;color:var(--primary);margin-bottom:24px}
.auth-box .logo{text-align:center;margin-bottom:20px}
.auth-box .logo img{height:56px}
.auth-switch{text-align:center;margin-top:16px;font-size:14px;color:var(--gray)}
.auth-footer{text-align:center;padding:20px 10px;color:rgba(255,255,255,.6);font-size:13px;line-height:2}
.auth-footer a{color:rgba(255,255,255,.7);text-decoration:none;margin:0 10px}
.auth-footer a:hover{color:#fff}

/* 后台布局 */
.admin-layout{display:flex;min-height:100vh}
.sidebar{width:220px;background:var(--primary);color:#fff;flex-shrink:0}
.sidebar .logo{padding:20px;text-align:center;border-bottom:1px solid rgba(255,255,255,.1)}
.sidebar .logo img{height:40px}
.sidebar nav a{display:block;padding:12px 20px;color:rgba(255,255,255,.8);font-size:14px;border-left:3px solid transparent}
.sidebar nav a:hover,.sidebar nav a.active{background:rgba(255,255,255,.1);color:#fff;border-left-color:var(--gold)}
.admin-main{flex:1;padding:24px;overflow-x:auto}
.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.admin-header h1{font-size:22px;color:var(--primary)}

/* 加盟商后台 */
.franchisee-layout{display:flex;min-height:100vh}
.franchisee-sidebar{width:200px;background:#fff;box-shadow:2px 0 8px rgba(0,0,0,.06);flex-shrink:0}
.franchisee-sidebar .logo{padding:20px;text-align:center;border-bottom:1px solid var(--border)}
.franchisee-sidebar .logo img{height:40px}
.franchisee-sidebar nav a{display:block;padding:12px 20px;color:var(--text);font-size:14px;border-left:3px solid transparent}
.franchisee-sidebar nav a:hover,.franchisee-sidebar nav a.active{background:var(--light);color:var(--primary);border-left-color:var(--primary)}
.franchisee-main{flex:1;padding:24px;background:var(--bg);overflow-x:auto}

/* 设备卡片 */
.device-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.device-card{background:#fff;border-radius:10px;padding:20px;box-shadow:0 2px 12px rgba(0,0,0,.06);border-top:4px solid var(--gray)}
.device-card.running{border-top-color:var(--success)}
.device-card.maintenance{border-top-color:var(--warning)}
.device-card.idle{border-top-color:#999}
.device-card .device-no{font-size:18px;font-weight:bold;color:var(--primary);margin-bottom:8px}
.device-card .device-status{margin-bottom:12px}
.device-card .device-info{font-size:13px;color:#666;line-height:1.8}

/* 模态框 */
.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}
.modal{background:#fff;border-radius:12px;padding:24px;width:500px;max-width:100%;max-height:90vh;overflow-y:auto}
.modal h3{color:var(--primary);margin-bottom:16px}
.modal-close{float:right;background:none;border:none;font-size:24px;cursor:pointer;color:#999}

/* 提示 */
.alert{padding:12px 16px;border-radius:6px;margin-bottom:16px}
.alert-success{background:#e8f5e9;color:var(--success)}
.alert-error{background:#ffebee;color:var(--danger)}
.alert-warning{background:#fff3e0;color:var(--warning)}
.alert-info{background:#e3f2fd;color:var(--secondary)}

/* 页脚 */
.footer{background:var(--primary);color:rgba(255,255,255,.8);padding:30px 0;margin-top:40px;text-align:center;font-size:13px}

/* Hero */
.hero{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;padding:60px 0;text-align:center}
.hero h1{font-size:36px;margin-bottom:16px}
.hero p{font-size:18px;opacity:.9}

/* 响应式 */
@media(max-width:600px){
  .container{padding:0 12px}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px;box-shadow:0 4px 8px rgba(0,0,0,.1);gap:8px;z-index:99}
  .nav-links.open{display:flex}
  .nav-links a{width:100%;padding:10px}
  .hamburger{display:block}
  .admin-layout,.franchisee-layout{flex-direction:column}
  .sidebar,.franchisee-sidebar{width:100%;position:relative;z-index:50}
  .sidebar .logo,.franchisee-sidebar .logo{padding:10px}
  .sidebar nav,.franchisee-sidebar nav{display:block;padding:0 8px}
  .sidebar .menu-group,.franchisee-sidebar .menu-group{display:block}
  .sidebar nav a,.franchisee-sidebar nav a{display:block;text-align:left;padding:10px 20px;font-size:13px;border-left:3px solid transparent;border-bottom:none}
  .sidebar nav a.active,.franchisee-sidebar nav a.active{border-left-color:var(--gold);border-bottom:none}
  .admin-main,.franchisee-main{padding:12px}
  .admin-header h1,.admin-main h1,.franchisee-main h1{font-size:18px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .stat-card{padding:14px 10px}
  .stat-card .num{font-size:24px}
  .stat-card .label{font-size:11px}
  .hero{padding:40px 0}
  .hero h1{font-size:24px}
  .hero p{font-size:15px}
  .card{padding:16px}
  .card-title{font-size:16px}
  table{font-size:12px}
  th,td{padding:8px 6px}
  .device-grid{grid-template-columns:1fr}
  .modal{width:100%;padding:16px;margin:10px}
  .btn{padding:10px 16px;font-size:14px}
  .btn-sm{padding:6px 10px;font-size:12px}
  .form-control{padding:10px;font-size:14px}
  .auth-box{padding:24px 20px}
  .auth-box h2{font-size:20px}
}
@media(max-width:480px){
  .stats-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:20px}
  .hero p{font-size:14px}
  .card{padding:12px}
}

/* 菜单分组样式 */
.menu-group {
  padding: 0 0 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.menu-group:last-child { border-bottom: none; }
.menu-group-title {
  padding: 10px 20px;
  font-size: 13px;
  color: #fff;
  font-weight: bold;
  background: rgba(139,0,0,0.6);
  letter-spacing: 2px;
  text-align: center;
  margin-bottom: 4px;
}
.group-franchisee .menu-group-title { border-left: 4px solid #81c784; }
.group-promoter .menu-group-title { border-left: 4px solid #64b5f6; }
.group-system .menu-group-title { border-left: 4px solid #ffb74d; }
.group-overview .menu-group-title { border-left: 4px solid #ffcc80; }
.group-logout { padding-top: 12px; border-bottom: none; }

/* 上传区域样式 */
.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 320px;
  height: 180px;
  border: 2px dashed #ddd;
  border-radius: 10px;
  background: #fafafa;
  color: #999;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  padding: 20px;
  box-sizing: border-box;
}
.upload-placeholder:hover {
  border-color: var(--primary, #c62828);
  background: #fff5f5;
  color: var(--primary, #c62828);
}
.upload-placeholder::before {
  content: '+';
  font-size: 36px;
  font-weight: 300;
  margin-bottom: 8px;
  line-height: 1;
}
.upload-placeholder span {
  font-size: 14px;
}
.upload-preview {
  width: auto;
  height: auto;
  max-width: 280px;
  max-height: 180px;
  object-fit: contain;
  border-radius: 10px;
  border: 1px solid #eee;
  cursor: pointer;
  transition: transform 0.2s;
  display: block;
}
.upload-preview:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.upload-area {
  display: inline-block;
  position: relative;
}
.upload-area .change-btn {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
}
.upload-area:hover .change-btn {
  opacity: 1;
}

/* 图片放大查看模态框 */
.image-viewer-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  cursor: zoom-out;
}
.image-viewer-modal img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.image-viewer-close {
  position: absolute;
  top: 20px;
  right: 30px;
  color: #fff;
  font-size: 36px;
  cursor: pointer;
  line-height: 1;
  opacity: 0.8;
}
.image-viewer-close:hover {
  opacity: 1;
}
/* 页面切换 */
.page { display: none; }
.page.active { display: block; }