:root{--primary:#E8734A;--primary-dark:#d4653a;--primary-light:#fff0ea;--text:#2D2D2D;--text2:#666;--text3:#999;--bg:#f5f5f5;--white:#fff;--border:#eee;--danger:#e74c3c;--success:#27ae60;--warning:#f39c12;--radius:8px;--shadow:0 2px 8px rgba(0,0,0,0.06)}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;font-size:14px;color:var(--text);background:var(--bg)}
a{color:var(--primary);text-decoration:none}
.admin-layout{display:flex;height:100vh}
.sidebar{width:200px;background:var(--text);color:var(--white);display:flex;flex-direction:column;flex-shrink:0}
.sidebar-header{padding:20px 16px;font-size:16px;font-weight:600;border-bottom:1px solid rgba(255,255,255,0.1)}
.sidebar-nav{flex:1;padding:8px 0}
.sidebar-session{padding:12px 16px;border-top:1px solid rgba(255,255,255,0.1);font-size:11px;color:rgba(255,255,255,0.7);overflow-wrap:anywhere}
.btn-logout{width:100%;margin-top:8px;padding:7px;border:1px solid rgba(255,255,255,0.25);border-radius:6px;background:transparent;color:var(--white);cursor:pointer}
.btn-logout:hover{background:rgba(255,255,255,0.08)}
.sidebar-nav a{display:flex;align-items:center;padding:12px 16px;color:rgba(255,255,255,0.7);font-size:14px;transition:all 0.15s;text-decoration:none}
.sidebar-nav a:hover{background:rgba(255,255,255,0.08);color:var(--white)}
.sidebar-nav a.active{background:var(--primary);color:var(--white)}
.sidebar-nav a .nav-icon{margin-right:10px;font-size:16px}
.main-area{flex:1;display:flex;flex-direction:column;overflow:hidden}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:var(--white);border-bottom:1px solid var(--border)}
.topbar h2{font-size:18px;font-weight:600}
.content{padding:20px 24px;overflow-y:auto;flex:1}
.card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:16px}
.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.card-header h3{font-size:15px;font-weight:600}
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:13px;color:var(--text2);margin-bottom:4px;font-weight:500}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px;outline:none;transition:border-color 0.2s;font-family:inherit}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary)}
.form-group textarea{min-height:60px;resize:vertical}
.form-row{display:flex;gap:12px}
.form-row .form-group{flex:1}
.btn{padding:9px 20px;border:none;border-radius:6px;font-size:14px;cursor:pointer;transition:all 0.15s;display:inline-flex;align-items:center;gap:4px}
.btn-primary{background:var(--primary);color:var(--white)}
.btn-primary:hover{background:var(--primary-dark)}
.btn-danger{background:var(--danger);color:var(--white)}
.btn-danger:hover{background:#c0392b}
.btn-success{background:var(--success);color:var(--white)}
.btn-success:hover{background:#219a52}
.btn-sm{padding:5px 12px;font-size:12px}
.btn-outline{background:var(--white);color:var(--text);border:1px solid var(--border)}
.btn-outline:hover{background:var(--bg)}
.btn-warning{background:var(--warning);color:var(--white)}
.btn-warning:hover{background:#e67e22}
table.data-table{width:100%;border-collapse:collapse;font-size:13px}
table.data-table th{background:var(--bg);padding:10px 12px;text-align:left;font-weight:600;color:var(--text2);border-bottom:2px solid var(--border)}
table.data-table td{padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:middle}
table.data-table tr:hover{background:#fafafa}
.status-badge{display:inline-block;padding:2px 10px;border-radius:12px;font-size:12px;font-weight:500}
.status-pending{background:#fff3e0;color:#e65100}
.status-completed{background:#e8f5e9;color:#2e7d32}
.status-cancelled{background:#fce4ec;color:#c62828}
.empty-state{text-align:center;padding:40px 0;color:var(--text3);font-size:14px}
.form-inline{display:flex;gap:8px;align-items:flex-end}
.form-inline .form-group{margin-bottom:0;flex:1}
.toggle-switch{position:relative;display:inline-block;width:44px;height:24px;cursor:pointer}
.toggle-switch input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;inset:0;background:#ccc;border-radius:24px;transition:0.3s}
.toggle-slider::before{content:"";position:absolute;height:18px;width:18px;left:3px;bottom:3px;background:white;border-radius:50%;transition:0.3s}
.toggle-switch input:checked+.toggle-slider{background:var(--success)}
.toggle-switch input:checked+.toggle-slider::before{transform:translateX(20px)}
.qrcode-preview{text-align:center;padding:20px}
.qrcode-preview img{max-width:280px;border-radius:8px;box-shadow:var(--shadow)}
.qrcode-actions{margin-top:16px;display:flex;gap:12px;justify-content:center}
.qrcode-input-area{max-width:500px}
.toolbar{margin-bottom:16px;display:flex;gap:8px;flex-wrap:wrap}
.toast{position:fixed;top:20px;left:50%;transform:translateX(-50%);z-index:9999;padding:10px 24px;border-radius:8px;font-size:14px;color:var(--white);animation:fadeIn 0.3s;box-shadow:0 4px 12px rgba(0,0,0,0.15)}
.toast-success{background:var(--success)}
.toast-error{background:var(--danger)}
@keyframes fadeIn{from{opacity:0;transform:translateX(-50%) translateY(-10px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}
.modal-overlay{position:fixed;inset:0;z-index:9000;background:rgba(0,0,0,0.45);display:flex;align-items:center;justify-content:center}
.modal-box{background:var(--white);border-radius:var(--radius);width:90%;max-width:520px;max-height:80vh;overflow-y:auto;box-shadow:0 8px 30px rgba(0,0,0,0.15);animation:fadeIn 0.2s}
.modal-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border)}
.modal-header h3{font-size:16px}
.modal-close{background:none;border:none;font-size:20px;cursor:pointer;color:var(--text3);padding:0 4px}
.modal-body{padding:20px}
.modal-footer{padding:12px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:8px}
.img-preview{width:80px;height:80px;object-fit:cover;border-radius:6px;border:1px solid var(--border)}
.img-placeholder{width:80px;height:80px;border-radius:6px;background:var(--bg);display:inline-flex;align-items:center;justify-content:center;color:var(--text3);font-size:24px;border:1px dashed var(--border)}
@media(max-width:768px){.sidebar{width:60px}.sidebar-header{display:none}.sidebar-nav a{justify-content:center;padding:14px 0}.sidebar-nav a .nav-icon{margin:0}.sidebar-nav a span{display:none}.content{padding:16px}.form-row{flex-direction:column}}
@media(max-width:768px){.sidebar-session{padding:10px 6px;font-size:0}.btn-logout{font-size:11px;padding:7px 2px}}
.login-page{display:flex;align-items:center;justify-content:center;min-height:100%;padding:20px;background:#f2f3f5}
.login-panel{width:100%;max-width:380px;background:var(--white);border:1px solid var(--border);border-radius:8px;padding:32px;box-shadow:var(--shadow)}
.login-brand{font-size:14px;color:var(--primary);font-weight:600;margin-bottom:8px}
.login-panel h1{font-size:22px;margin-bottom:24px}
.login-error{min-height:20px;color:var(--danger);font-size:13px;margin-bottom:10px}
.login-submit{width:100%;justify-content:center}
.login-submit:disabled{opacity:.6;cursor:not-allowed}