/* ============ Reset & Base ============ */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --green-900:#1b4332;--green-800:#2d6a4f;--green-700:#40916c;
  --green-600:#52b788;--green-500:#74c69d;--green-400:#95d5b2;
  --green-200:#b7e4c7;--green-100:#d8f3dc;--green-50:#f0fdf4;
  --text-primary:#1f2329;--text-secondary:#646a73;--text-tertiary:#8f959e;
  --border-color:#e5e6eb;--bg-page:#f5f6f7;--bg-white:#fff;
  --shadow-sm:0 1px 3px rgba(0,0,0,.04);--shadow-md:0 4px 12px rgba(0,0,0,.06);
  --shadow-lg:0 8px 24px rgba(0,0,0,.08);
  --radius-sm:6px;--radius-md:10px;--radius-lg:14px;
}
body{
  font-family:-apple-system,BlinkMacSystemFont,'SF Pro Text','PingFang SC','Microsoft YaHei',sans-serif;
  background:var(--bg-page);color:var(--text-primary);min-height:100vh;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  font-size:14px;line-height:1.6;
}
a{text-decoration:none;color:inherit}

/* ============ Login Page ============ */
.login-container{
  display:flex;justify-content:center;align-items:center;min-height:100vh;
  background:linear-gradient(160deg, var(--green-900) 0%, var(--green-800) 40%, var(--green-700) 100%);
  position:relative;overflow:hidden;
}
.login-container::before{
  content:'';position:absolute;inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Cpath d='M100 10c-3 6-6 12-8 18-4-6-8-10-12-14 2 6 2 14 2 20-6-2-14-2-20-2 4 4 10 8 14 12-6 2-12 4-18 8 6 4 12 6 18 8-4 4-10 8-14 12 6 0 14 0 20-2 0 6-2 14-2 20 4-4 8-8 12-14 2 6 5 12 8 18 2-6 5-12 8-18 4 6 8 10 12 14-2-6-2-14-2-20 6 2 14 2 20 2-4-4-10-8-14-12 6-2 12-5 18-8-6-4-12-6-18-8 4-4 10-8 14-12-6 0-14 0-20 2 0-6 2-14 2-20-4 4-8 8-12 14-2-6-5-12-8-18z' fill='rgba(255,255,255,.03)'/%3E%3C/svg%3E");
  background-size:120px 120px;opacity:.6;
}
.login-box{
  position:relative;z-index:1;background:rgba(255,255,255,.97);
  border-radius:var(--radius-lg);padding:48px 40px;width:420px;
  box-shadow:0 24px 80px rgba(0,0,0,.25);backdrop-filter:blur(10px);
}
.login-box h1{text-align:center;font-size:28px;font-weight:700;color:var(--green-800);margin-bottom:4px;letter-spacing:1px}
.login-box .subtitle{text-align:center;color:var(--text-tertiary);font-size:14px;margin-bottom:36px;letter-spacing:1px}
.login-box .form-group{margin-bottom:22px}
.login-box label{display:block;margin-bottom:6px;font-size:13px;font-weight:500;color:var(--text-secondary)}
.login-box input{width:100%;padding:11px 14px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:14px;transition:all .2s;background:#fafbfc}
.login-box input:focus{outline:none;border-color:var(--green-700);box-shadow:0 0 0 3px rgba(45,106,79,.08);background:#fff}
.login-box .btn-login{width:100%;padding:12px;background:var(--green-800);color:#fff;border:none;border-radius:var(--radius-sm);font-size:15px;font-weight:600;cursor:pointer;transition:all .2s;margin-top:4px;letter-spacing:2px}
.login-box .btn-login:hover{background:var(--green-900);box-shadow:0 4px 14px rgba(27,67,50,.3)}
.login-box .error-msg{color:#d03050;font-size:13px;text-align:center;margin-top:10px;min-height:20px}
.login-box .hint{text-align:center;color:var(--text-tertiary);font-size:12px;margin-top:24px;line-height:2}

/* ============ Main Layout ============ */
.app-layout{display:none;min-height:100vh}
.app-layout.active{display:flex}
.sidebar{width:220px;background:var(--green-900);color:#fff;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:width .2s}
.sidebar::before{
  content:'';position:absolute;inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 300 300'%3E%3Cpath d='M150 15c-5 10-10 20-12 30-6-10-12-16-18-22 3 10 3 22 3 32-10-4-22-4-32-4 6 6 16 12 22 18-10 4-20 8-28 14 10 6 20 10 28 14-6 6-16 12-22 18 10 0 22 0 32-3 0 10-3 22-3 32 6-6 12-12 18-22 3 10 8 20 12 30 3-10 8-20 12-30 6 10 12 16 18 22-3-10-3-22-3-32 10 3 22 3 32 3-6-6-16-12-22-18 10-4 20-8 28-14-10-6-20-10-28-14 6-6 16-12 22-18-10 0-22 0-32 3 0-10 3-22 3-32-6 6-12 12-18 22-3-10-8-20-12-30z' fill='rgba(255,255,255,.02)'/%3E%3C/svg%3E");
  background-size:150px;pointer-events:none;
}
.sidebar-logo{padding:22px 18px;border-bottom:1px solid rgba(255,255,255,.08);text-align:center;position:relative;z-index:1}
.sidebar-logo h2{font-size:16px;font-weight:700;color:#fff;white-space:nowrap;letter-spacing:1px}
.sidebar-logo small{font-size:11px;color:var(--green-400)}
.sidebar-nav{flex:1;overflow-y:auto;padding:8px 0;position:relative;z-index:1}
.sidebar-nav .nav-group{padding:0}
.sidebar-nav .nav-group-title{padding:14px 20px 6px;font-size:11px;color:var(--green-500);text-transform:uppercase;letter-spacing:1.5px}
.sidebar-nav .nav-item{display:flex;align-items:center;padding:10px 20px;color:rgba(255,255,255,.6);font-size:14px;cursor:pointer;transition:all .2s;border-left:3px solid transparent;position:relative}
.sidebar-nav .nav-item:hover{color:#fff;background:rgba(255,255,255,.06)}
.sidebar-nav .nav-item.active{color:#fff;background:rgba(45,106,79,.5);border-left-color:var(--green-500)}
.sidebar-nav .nav-item .nav-icon{margin-right:10px;font-size:16px;width:20px;text-align:center}
.sidebar-nav .nav-item .nav-badge{margin-left:auto;background:#d03050;color:#fff;font-size:10px;padding:2px 7px;border-radius:10px}
/* 可展开菜单 */
.sidebar-nav .nav-parent{cursor:pointer;justify-content:flex-start}
.sidebar-nav .nav-parent .nav-arrow{margin-left:auto;font-size:12px;transition:transform .2s;display:inline-block}
.sidebar-nav .nav-parent .nav-arrow.expanded{transform:rotate(90deg)}
.sidebar-nav .nav-children{max-height:0;overflow:hidden;transition:max-height .25s ease}
.sidebar-nav .nav-children.expanded{max-height:200px}
.sidebar-nav .nav-sub-item{padding-left:50px;font-size:13px}
.main-area{flex:1;margin-left:220px;display:flex;flex-direction:column;min-height:100vh}
.topbar{height:56px;background:var(--bg-white);display:flex;align-items:center;justify-content:space-between;padding:0 28px;box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:50}
.topbar .breadcrumb{font-size:14px;color:var(--text-secondary);font-weight:500}
.topbar .user-info{display:flex;align-items:center;gap:12px;cursor:pointer}
.topbar .user-info .avatar{width:32px;height:32px;border-radius:50%;background:var(--green-800);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600}
.topbar .user-info .user-name{font-size:14px;color:var(--text-primary);font-weight:500}
.topbar .user-info .role-tag{font-size:11px;padding:2px 10px;border-radius:10px;background:var(--green-100);color:var(--green-800);font-weight:500}
.content-area{flex:1;padding:28px;overflow-y:auto}

/* ============ Page Header ============ */
.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.page-header h2{font-size:22px;font-weight:700;color:var(--text-primary)}
.page-header-actions{display:flex;gap:10px}

/* ============ Cards ============ */
.card{background:var(--bg-white);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);margin-bottom:20px;border:1px solid var(--border-color)}
.card-header{padding:16px 24px;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}
.card-header h3{font-size:16px;font-weight:600;color:var(--text-primary)}
.card-body{padding:24px}

/* ============ Stats Grid ============ */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;margin-bottom:24px}
.stat-card{background:var(--bg-white);border-radius:var(--radius-md);padding:22px 24px;box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:16px;cursor:pointer;transition:all .2s;border:1px solid var(--border-color)}
.stat-card:hover{transform:translateY(-1px);box-shadow:var(--shadow-md);border-color:var(--green-200)}
.stat-card .stat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px}
.stat-card .stat-info .stat-value{font-size:26px;font-weight:700;color:var(--text-primary)}
.stat-card .stat-info .stat-label{font-size:12px;color:var(--text-tertiary);margin-top:2px}
.stat-card.warning .stat-icon{background:#fff7e6}
.stat-card.warning .stat-value{color:#d46b08}

/* ============ Tables ============ */
.data-table{width:100%;border-collapse:collapse}
.data-table th,.data-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border-color);font-size:13px}
.data-table th{background:#fafbfc;font-weight:600;color:var(--text-secondary);white-space:nowrap}
.data-table tr:hover td{background:#f8faf9}
.data-table .empty-row td{text-align:center;color:var(--text-tertiary);padding:48px}
.data-table .actions{display:flex;gap:6px}

/* ============ Status Badges ============ */
.badge{display:inline-block;padding:3px 10px;border-radius:10px;font-size:12px;font-weight:500;white-space:nowrap}
.badge-success{background:#edf7ee;color:var(--green-800)}
.badge-warning{background:#fff7e6;color:#d46b08}
.badge-danger{background:#fef0f0;color:#d03050}
.badge-info{background:#e6f4ff;color:#1890ff}
.badge-default{background:#f5f5f5;color:var(--text-tertiary)}

/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:13px;cursor:pointer;background:var(--bg-white);color:var(--text-primary);transition:all .2s;white-space:nowrap;font-weight:500}
.btn:hover{opacity:.85;border-color:var(--green-600);color:var(--green-800)}
.btn-primary{background:var(--green-800);color:#fff;border-color:var(--green-800)}
.btn-primary:hover{background:var(--green-900);opacity:1;color:#fff}
.btn-success{background:var(--green-700);color:#fff;border-color:var(--green-700)}
.btn-warning{background:#d46b08;color:#fff;border-color:#d46b08}
.btn-danger{background:#d03050;color:#fff;border-color:#d03050}
.btn-sm{padding:4px 12px;font-size:12px;border-radius:4px}
.btn-lg{padding:12px 28px;font-size:15px}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* ============ Forms ============ */
.form-group{margin-bottom:18px}
.form-group label{display:block;margin-bottom:5px;font-size:13px;font-weight:500;color:var(--text-secondary)}
.form-group label .required{color:#d03050;margin-left:2px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:9px 12px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:13px;transition:all .2s;background:#fafbfc}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--green-700);box-shadow:0 0 0 3px rgba(45,106,79,.08);background:#fff}
.form-group textarea{resize:vertical;min-height:80px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}

/* ============ Modals ============ */
.modal-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.4);z-index:1000;justify-content:center;align-items:flex-start;padding-top:80px}
.modal-overlay.active{display:flex}
.modal{background:var(--bg-white);border-radius:var(--radius-lg);width:90%;max-width:750px;max-height:80vh;display:flex;flex-direction:column;box-shadow:var(--shadow-lg)}
.modal-lg{max-width:950px}
.modal-wide{max-width:1100px}
.modal-header{padding:18px 24px;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}
.modal-header h3{font-size:17px;font-weight:600;color:var(--text-primary)}
.modal-close{background:none;border:none;font-size:22px;cursor:pointer;color:var(--text-tertiary);padding:4px;line-height:1}
.modal-close:hover{color:var(--text-primary)}
.modal-body{padding:24px;overflow-y:auto;flex:1}
.modal-footer{padding:16px 24px;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:10px}

/* ============ Search Bar ============ */
.search-bar{display:flex;gap:12px;margin-bottom:18px;flex-wrap:wrap;align-items:center}
.search-bar input,.search-bar select{padding:8px 12px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:13px;min-width:160px;background:#fafbfc;transition:all .2s}
.search-bar input:focus,.search-bar select:focus{outline:none;border-color:var(--green-700);box-shadow:0 0 0 3px rgba(45,106,79,.08);background:#fff}

/* ============ Pagination ============ */
.pagination{display:flex;justify-content:center;align-items:center;gap:6px;padding:20px 0}
.pagination button{padding:6px 12px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background:var(--bg-white);cursor:pointer;font-size:13px;transition:all .2s;color:var(--text-secondary)}
.pagination button:hover{color:var(--green-800);border-color:var(--green-600)}
.pagination button.active{background:var(--green-800);color:#fff;border-color:var(--green-800)}
.pagination button[disabled]{opacity:.4;cursor:not-allowed}
.pagination .page-info{font-size:13px;color:var(--text-tertiary)}

/* ============ Timeline ============ */
.timeline{padding:10px 0}
.timeline-item{display:flex;padding:12px 0;position:relative}
.timeline-item::before{content:'';position:absolute;left:8px;top:32px;bottom:-12px;width:2px;background:var(--border-color)}
.timeline-item:last-child::before{display:none}
.timeline-dot{width:16px;height:16px;border-radius:50%;background:var(--green-700);flex-shrink:0;margin-right:16px;margin-top:4px;position:relative;z-index:1}
.timeline-content{flex:1}
.timeline-content .tl-header{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.timeline-content .tl-operator{font-weight:600;font-size:13px}
.timeline-content .tl-time{font-size:11px;color:var(--text-tertiary)}
.timeline-content .tl-comment{font-size:13px;color:var(--text-secondary);margin-top:4px}

/* ============ Compliance Alert ============ */
.alert-item{display:flex;align-items:center;padding:10px 14px;border-radius:var(--radius-sm);margin-bottom:8px;font-size:13px}
.alert-item.pass{background:#edf7ee;color:var(--green-800)}
.alert-item.violation{background:#fef0f0;color:#d03050}
.alert-item .alert-icon{margin-right:8px;font-size:16px}

/* ============ Import Zone ============ */
.import-zone{border:2px dashed var(--border-color);border-radius:var(--radius-md);padding:48px;text-align:center;cursor:pointer;transition:all .2s;margin-bottom:16px}
.import-zone:hover,.import-zone.drag-over{border-color:var(--green-600);background:var(--green-50)}
.import-zone .import-icon{font-size:44px;margin-bottom:12px}
.import-zone .import-text{font-size:14px;color:var(--text-secondary)}
.import-zone .import-hint{font-size:12px;color:var(--text-tertiary);margin-top:6px}

/* ============ Formula Builder ============ */
.formula-row{display:flex;gap:8px;align-items:center;margin-bottom:8px}
.formula-row select,.formula-row input{flex:1;padding:7px 10px;border:1px solid var(--border-color);border-radius:4px;font-size:13px;background:#fafbfc}
.formula-row select:focus,.formula-row input:focus{outline:none;border-color:var(--green-700)}
.formula-row .btn-remove{color:#d03050;border-color:#d03050}

/* ============ Dashboard Cards ============ */
.dashboard-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:24px}
@media(max-width:1200px){.dashboard-grid{grid-template-columns:1fr}}
.dashboard-card{background:var(--bg-white);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid var(--border-color)}
.dashboard-card .dc-header{padding:16px 24px;border-bottom:1px solid var(--border-color);font-size:16px;font-weight:600;color:var(--text-primary)}
.dashboard-card .dc-body{padding:18px 24px}
.task-list .task-item{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--border-color)}
.task-list .task-item:last-child{border-bottom:none}
.task-list .task-no{color:var(--green-800);font-weight:600;font-size:13px}
.task-list .task-cust{color:var(--text-tertiary);font-size:12px}

/* ============ Detail Grid ============ */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.detail-grid>div{background:#fafbfc;padding:12px 16px;border-radius:var(--radius-sm);border:1px solid var(--border-color)}
.detail-grid label{display:block;font-size:12px;color:var(--text-tertiary);margin-bottom:4px}
.detail-grid span{font-size:14px;color:var(--text-primary);font-weight:500}

/* ============ Tabs ============ */
.tabs{display:flex;border-bottom:2px solid var(--border-color);margin-bottom:20px;gap:4px}
.tab-item{padding:10px 22px;font-size:14px;color:var(--text-secondary);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .2s;font-weight:500}
.tab-item:hover{color:var(--green-800)}
.tab-item.active{color:var(--green-800);border-bottom-color:var(--green-800);font-weight:600}

/* ============ Leaf Pattern Background (content area) ============ */
.content-area{position:relative}
.content-area::before{
  content:'';position:fixed;right:0;bottom:0;width:280px;height:280px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Cg fill='%232d6a4f' opacity='.03'%3E%3Cpath d='M100 90c-5-10-15-15-20-10s0 15 5 20c3 3 10 2 15-2s2-5 0-8zm10 20c-8-5-20-5-28 0s-10 15-5 22 18 10 28 5 12-18 5-27zm-30-5c5-8 5-18 0-28s-12-15-22-12-15 15-12 25 12 18 22 15 8-5 12 0z'/%3E%3Cpath d='M50 70c-3-6-8-8-12-5s-3 10 2 14c3 2 8 1 10-2s2-5 0-7zm8 12c-5-3-14-3-20 0s-8 10-2 15 14 5 20 2 8-12 2-17zm-22-4c3-5 3-12 0-18s-8-10-15-8-10 8-8 15 8 12 15 10 5-2 8 1z'/%3E%3Cpath d='M150 140c-4-8-12-12-18-8s-2 14 4 18c4 3 10 2 14-2s2-6 0-8zm10 16c-6-4-18-4-24 0s-8 14-2 20 18 10 24 4 8-16 2-24zm-26-4c3-6 3-14 0-22s-10-12-18-10-12 12-10 20 10 15 18 12 6-4 10 0z'/%3E%3C/g%3E%3C/svg%3E");
  background-size:contain;background-repeat:no-repeat;background-position:bottom right;
  pointer-events:none;z-index:0;opacity:.6;
}

/* ============ Responsive ============ */
@media(max-width:768px){
  .sidebar{width:60px}
  .sidebar-logo h2,.sidebar-logo small,.nav-group-title,.nav-item span:not(.nav-icon){display:none}
  .sidebar-nav .nav-item{justify-content:center;padding:12px}
  .sidebar-nav .nav-item .nav-icon{margin-right:0;font-size:20px}
  .main-area{margin-left:60px}
  .form-row,.form-row-3{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}

/* ============ 配方原料分类选择器 ============ */
.pcat-tabs{display:flex;gap:4px;border-bottom:2px solid #e4e7ed;margin-bottom:12px;flex-wrap:wrap}
.pcat-tab{padding:8px 14px;cursor:pointer;font-size:13px;font-weight:500;color:#909399;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .2s;border-radius:6px 6px 0 0;white-space:nowrap}
.pcat-tab:hover{color:#2d6a4f;background:#f0f5f2}
.pcat-tab.active{color:#2d6a4f;border-bottom-color:#2d6a4f;background:#f0f5f2}
.pcat-panel{display:none}
.pcat-panel.active{display:block}
.pcat-sub-title{padding:8px 12px 4px;font-size:12px;font-weight:600;color:#2d6a4f;background:#f8faf9;border-bottom:1px solid #e4e7ed;margin-bottom:4px;border-radius:4px}
.pcat-item{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;border-bottom:1px solid #f0f0f0;transition:background .15s;gap:12px}
.pcat-item:hover{background:#f8faf9}
.pcat-item-info{flex:1;min-width:0;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.pcat-item-code{font-weight:600;color:#2d6a4f;font-size:12px;font-family:monospace;white-space:nowrap}
.pcat-item-name{font-size:13px;color:#303133}
.pcat-item-spec{font-size:11px;color:#909399}
.pcat-item-supplier{font-size:11px;color:#409eff;margin-left:auto}
.pcat-item button{flex-shrink:0;white-space:nowrap}

/* ============ Print ============ */
@media print{
  .sidebar,.topbar,.btn,.page-header-actions{display:none!important}
  .main-area{margin-left:0!important}
  .content-area{padding:0!important}
}

/* ============ User Dropdown ============ */
.user-dropdown{position:relative}
.user-dropdown-menu{display:none;position:absolute;top:100%;right:0;background:var(--bg-white);border-radius:var(--radius-md);box-shadow:var(--shadow-md);min-width:160px;z-index:200;padding:4px 0;margin-top:6px;border:1px solid var(--border-color)}
.user-dropdown-menu.active{display:block}
.user-dropdown-menu .dropdown-item{padding:10px 18px;font-size:13px;cursor:pointer;display:flex;align-items:center;gap:8px;color:var(--text-primary)}
.user-dropdown-menu .dropdown-item:hover{background:#f8faf9}
.user-dropdown-menu .dropdown-divider{height:1px;background:var(--border-color);margin:4px 0}

/* ============ AI Chat Floating Widget ============ */
.ai-chat-btn{
  position:fixed;bottom:24px;right:24px;width:56px;height:56px;
  border-radius:50%;background:var(--green-800);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 20px rgba(45,106,79,.35);
  cursor:pointer;z-index:1000;border:none;font-size:24px;
  transition:transform .2s,box-shadow .2s;
}
.ai-chat-btn:hover{transform:scale(1.08);box-shadow:0 6px 28px rgba(45,106,79,.45)}
.ai-chat-btn-icon{line-height:1}
.ai-chat-btn-pulse{
  position:absolute;width:64px;height:64px;border-radius:50%;
  border:2px solid rgba(45,106,79,.25);
  animation:aiPulse 2s ease-in-out infinite;
}
@keyframes aiPulse{
  0%,100%{transform:scale(1);opacity:1}
  50%{transform:scale(1.25);opacity:.3}
}

.ai-chat-panel{
  position:fixed;bottom:92px;right:24px;width:380px;max-height:560px;
  background:var(--bg-white);border-radius:14px;
  box-shadow:0 8px 40px rgba(0,0,0,.15);
  display:none;flex-direction:column;z-index:1000;
  overflow:hidden;border:1px solid var(--border-color);
}
.ai-chat-panel.open{display:flex}

.ai-chat-header{
  display:flex;justify-content:space-between;align-items:center;
  padding:14px 18px;background:linear-gradient(135deg,var(--green-800),var(--green-700));
  color:#fff;
}
.ai-chat-header-left{display:flex;align-items:center;gap:10px}
.ai-chat-header-left>span{font-size:24px}
.ai-chat-header-left strong{font-size:15px;display:block}
.ai-chat-header-left small{font-size:11px;opacity:.8}
.ai-chat-header-right{display:flex;gap:4px}
.ai-chat-action-btn{
  width:32px;height:32px;border-radius:8px;border:none;
  background:rgba(255,255,255,.15);color:#fff;
  cursor:pointer;font-size:13px;display:flex;align-items:center;justify-content:center;
  transition:background .2s;
}
.ai-chat-action-btn:hover{background:rgba(255,255,255,.3)}

.ai-chat-messages{
  flex:1;overflow-y:auto;padding:16px;min-height:260px;max-height:380px;
  background:var(--bg-page);
}
.ai-chat-msg{display:flex;gap:8px;margin-bottom:14px}
.ai-chat-msg-bot{flex-direction:row}
.ai-chat-msg-user{flex-direction:row-reverse}
.ai-chat-avatar{
  width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:16px;flex-shrink:0;background:var(--bg-white);border:1px solid var(--border-color);
}
.ai-chat-bubble{
  max-width:80%;padding:10px 14px;border-radius:12px;font-size:13px;line-height:1.6;
  color:var(--text-primary);word-break:break-word;
}
.ai-chat-msg-bot .ai-chat-bubble{
  background:var(--bg-white);border:1px solid var(--border-color);
  border-top-left-radius:4px;
}
.ai-chat-msg-user .ai-chat-bubble{
  background:var(--green-800);color:#fff;
  border-top-right-radius:4px;
}

.ai-chat-typing{display:flex;gap:8px;padding:0 16px 12px;align-items:center}
.ai-dot-flash::after{
  content:'...';animation:aiDots 1.4s steps(4,end) infinite;font-size:20px;
  letter-spacing:2px;color:var(--text-tertiary);
}
@keyframes aiDots{0%,20%{content:'.'}40%{content:'..'}60%,100%{content:'...'}}

.ai-chat-input-area{
  display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--border-color);
  background:var(--bg-white);
}
.ai-chat-input-area input{
  flex:1;padding:10px 14px;border:1px solid var(--border-color);
  border-radius:20px;font-size:13px;outline:none;
  background:var(--bg-page);transition:border-color .2s;
}
.ai-chat-input-area input:focus{border-color:var(--green-600)}
.ai-chat-input-area button{
  width:40px;height:40px;border-radius:50%;border:none;
  background:var(--green-800);color:#fff;font-size:16px;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background .2s;flex-shrink:0;
}
.ai-chat-input-area button:hover{background:var(--green-600)}