@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');
:root{
  --bg-primary:#0a0e17;--bg-secondary:#111827;--bg-tertiary:#1e293b;
  --glass:rgba(15,23,42,0.75);--glass-border:rgba(148,163,184,0.12);
  --accent-cyan:#06b6d4;--accent-orange:#f97316;--accent-magenta:#ec4899;
  --accent-green:#10b981;--accent-red:#ef4444;--accent-yellow:#eab308;
  --text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#64748b;
  --border:rgba(148,163,184,0.1);--shadow:0 8px 32px rgba(0,0,0,0.4);
  --radius:12px;--radius-sm:8px;--radius-lg:16px;
  --sidebar-w:220px;--topbar-h:56px;--ai-sidebar-w:360px;
  --transition:all .25s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:14px;scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg-secondary)}
::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:3px}
a{color:var(--accent-cyan);text-decoration:none}
button{cursor:pointer;font-family:inherit;border:none;outline:none}
input,select,textarea{font-family:inherit;outline:none;border:1px solid var(--glass-border);background:var(--bg-secondary);color:var(--text-primary);border-radius:var(--radius-sm);padding:8px 12px;transition:var(--transition)}
input:focus,select:focus,textarea:focus{border-color:var(--accent-cyan);box-shadow:0 0 0 3px rgba(6,182,212,0.15)}

/* AUTH */
.auth-wrapper{display:flex;align-items:center;justify-content:center;min-height:100vh;background:radial-gradient(ellipse at 30% 20%,rgba(6,182,212,0.08),transparent 60%),radial-gradient(ellipse at 70% 80%,rgba(249,115,22,0.06),transparent 60%),var(--bg-primary)}
.auth-card{background:var(--glass);backdrop-filter:blur(24px);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:40px;width:100%;max-width:420px;animation:fadeUp .5s ease}
.auth-card h1{font-size:1.5rem;margin-bottom:4px;background:linear-gradient(135deg,var(--accent-cyan),var(--accent-orange));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.auth-card .subtitle{color:var(--text-secondary);margin-bottom:24px;font-size:.85rem}
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:4px;font-size:.8rem;color:var(--text-secondary);font-weight:500}
.form-group input,.form-group select{width:100%}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:var(--radius-sm);font-weight:600;font-size:.85rem;transition:var(--transition)}
.btn-primary{background:linear-gradient(135deg,var(--accent-cyan),#0891b2);color:#fff}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 20px rgba(6,182,212,0.35)}
.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--glass-border)}
.btn-secondary:hover{border-color:var(--accent-cyan)}
.btn-danger{background:linear-gradient(135deg,var(--accent-red),#dc2626);color:#fff}
.btn-sm{padding:6px 12px;font-size:.75rem}
.btn-block{width:100%}
.btn-icon{width:32px;height:32px;padding:0;border-radius:var(--radius-sm);background:var(--bg-tertiary);color:var(--text-secondary);display:inline-flex;align-items:center;justify-content:center}
.btn-icon:hover{color:var(--accent-cyan);background:rgba(6,182,212,0.1)}

/* LAYOUT */
.app-layout{display:grid;grid-template-columns:var(--sidebar-w) 1fr;grid-template-rows:var(--topbar-h) 1fr auto;min-height:100vh}
.app-layout.ai-open{grid-template-columns:var(--sidebar-w) 1fr var(--ai-sidebar-w)}
.topbar{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;padding:0 20px;background:var(--glass);backdrop-filter:blur(20px);border-bottom:1px solid var(--glass-border);z-index:100}
.topbar .logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.05rem}
.topbar .logo .icon{font-size:1.3rem}
.topbar-right{display:flex;align-items:center;gap:12px}
.project-selector{background:var(--bg-tertiary);border:1px solid var(--glass-border);color:var(--text-primary);padding:6px 12px;border-radius:var(--radius-sm);font-size:.8rem;max-width:200px}
.user-menu{display:flex;align-items:center;gap:8px;padding:6px 12px;border-radius:var(--radius-sm);background:var(--bg-tertiary);border:1px solid var(--glass-border);cursor:pointer;color:var(--text-primary);font-size:.8rem;transition:var(--transition);position:relative}
.user-menu:hover{border-color:var(--accent-cyan)}
.user-avatar{width:26px;height:26px;border-radius:50%;background:linear-gradient(135deg,var(--accent-cyan),var(--accent-magenta));display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700;color:#fff;flex-shrink:0}
.mobile-menu-btn{display:none;background:none;color:var(--text-primary);font-size:1.3rem;padding:4px;line-height:1}
.ai-toggle-btn{background:var(--bg-tertiary)!important;font-size:1rem!important;border:1px solid var(--glass-border)!important}
.ai-toggle-btn:hover{border-color:var(--accent-cyan)!important;box-shadow:0 0 12px rgba(6,182,212,0.2)}
.sidebar{background:var(--bg-secondary);border-right:1px solid var(--glass-border);padding:12px 0;overflow-y:auto;display:flex;flex-direction:column}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 20px;color:var(--text-secondary);font-size:.85rem;font-weight:500;transition:var(--transition);cursor:pointer;border-left:3px solid transparent;margin:2px 0}
.nav-item:hover{color:var(--text-primary);background:rgba(6,182,212,0.05)}
.nav-item.active{color:var(--accent-cyan);background:rgba(6,182,212,0.08);border-left-color:var(--accent-cyan)}
.nav-item .nav-icon{font-size:1.05rem;width:22px;text-align:center}
.main-content{padding:20px;overflow-y:auto;background:var(--bg-primary)}
.statusbar{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;padding:6px 20px;background:var(--bg-secondary);border-top:1px solid var(--glass-border);font-size:.7rem;color:var(--text-muted)}

/* AI RIGHT SIDEBAR */
.ai-sidebar{display:none;flex-direction:column;background:var(--bg-secondary);border-left:1px solid var(--glass-border);overflow:hidden;height:100%;max-height:calc(100vh - var(--topbar-h))}
.ai-open .ai-sidebar{display:flex}
.ai-sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--glass-border);font-size:.9rem;flex-shrink:0}
.ai-chat-messages{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:10px;min-height:0}
.ai-msg{display:flex;gap:8px;animation:fadeUp .2s ease}
.ai-msg-bot .ai-msg-content{background:var(--bg-tertiary);border:1px solid var(--glass-border);border-radius:0 var(--radius-sm) var(--radius-sm) var(--radius-sm);padding:10px 14px;font-size:.82rem;line-height:1.6;max-width:95%;color:var(--text-secondary);word-break:break-word}
.ai-msg-user{justify-content:flex-end}
.ai-msg-user .ai-msg-content{background:rgba(6,182,212,0.12);border:1px solid rgba(6,182,212,0.2);border-radius:var(--radius-sm) 0 var(--radius-sm) var(--radius-sm);padding:10px 14px;font-size:.82rem;line-height:1.5;max-width:85%;color:var(--text-primary);word-break:break-word}
.ai-chat-input{padding:12px;border-top:1px solid var(--glass-border);background:var(--bg-secondary);flex-shrink:0}
.ai-chat-input input{width:100%}

/* DRAWINGS TABLE */
.drawings-table{width:100%;border-collapse:collapse;font-size:.85rem}
.drawings-table th{text-align:left;padding:8px 12px;font-size:.78rem;font-weight:600;color:var(--text-secondary);border-bottom:2px solid var(--glass-border)}
.drawings-table td{padding:6px 12px;border-bottom:1px solid var(--glass-border)}
.drawings-table tr:hover{background:rgba(6,182,212,0.03)}
.module-header-row td{border-bottom:1px solid var(--text-muted) !important}
.part-header-row td{border-bottom:1px solid var(--accent-cyan) !important}
.hidden-row{display:none}
.btn-xs{background:var(--bg-tertiary);border:1px solid var(--glass-border);border-radius:3px;cursor:pointer;color:var(--text-secondary);transition:all .15s}
.btn-xs:hover{border-color:var(--accent-cyan);color:var(--accent-cyan)}

/* MOBILE BOTTOM NAV */
.mobile-bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;background:var(--bg-secondary);border-top:1px solid var(--glass-border);z-index:150;padding:4px 0 env(safe-area-inset-bottom,4px)}
.mobile-bottom-nav{justify-content:space-around;align-items:center}
.mobile-nav-item{display:flex;flex-direction:column;align-items:center;padding:6px 0;font-size:1.2rem;color:var(--text-muted);cursor:pointer;flex:1;transition:var(--transition)}
.mobile-nav-item span{font-size:.6rem;margin-top:2px}
.mobile-nav-item.active{color:var(--accent-cyan)}
.mobile-nav-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.5);z-index:140}

/* CARDS */
.card{background:var(--glass);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:var(--radius);padding:20px;transition:var(--transition)}
.card:hover{border-color:rgba(6,182,212,0.2);box-shadow:0 4px 24px rgba(0,0,0,0.2)}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.card-title{font-size:1rem;font-weight:600}
.section-title{font-size:1.3rem;font-weight:700;margin-bottom:20px;display:flex;align-items:center;gap:10px}

/* STATS */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.stat-card{text-align:center;padding:24px 16px}
.stat-value{font-size:2rem;font-weight:700;font-family:'JetBrains Mono',monospace;background:linear-gradient(135deg,var(--accent-cyan),var(--accent-orange));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{font-size:.75rem;color:var(--text-secondary);margin-top:4px;text-transform:uppercase;letter-spacing:1px}

/* TABLE */
.table-wrapper{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--glass-border)}
table{width:100%;border-collapse:collapse}
th{background:var(--bg-tertiary);padding:10px 14px;text-align:left;font-size:.75rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;white-space:nowrap}
td{padding:10px 14px;border-top:1px solid var(--border);font-size:.83rem;white-space:nowrap}
tr:hover td{background:rgba(6,182,212,0.03)}

/* BADGES */
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:20px;font-size:.7rem;font-weight:600}
.badge-cyan{background:rgba(6,182,212,0.15);color:var(--accent-cyan)}
.badge-orange{background:rgba(249,115,22,0.15);color:var(--accent-orange)}
.badge-green{background:rgba(16,185,129,0.15);color:var(--accent-green)}
.badge-red{background:rgba(239,68,68,0.15);color:var(--accent-red)}
.badge-magenta{background:rgba(236,72,153,0.15);color:var(--accent-magenta)}
.badge-yellow{background:rgba(234,179,8,0.15);color:var(--accent-yellow)}
.badge-muted{background:rgba(100,116,139,0.15);color:var(--text-muted)}

/* PROGRESS */
.progress-bar{height:6px;background:var(--bg-tertiary);border-radius:3px;overflow:hidden}
.progress-fill{height:100%;border-radius:3px;background:linear-gradient(90deg,var(--accent-cyan),var(--accent-green));transition:width .6s ease;position:relative}
.progress-fill::after{content:'';position:absolute;right:0;top:0;height:100%;width:30px;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.3));animation:shimmer 1.5s infinite}

/* BOM TREE */
.tree-node{border-left:2px solid var(--glass-border);margin-left:16px;padding-left:12px}
.tree-node:first-child{margin-left:0;border-left:none;padding-left:0}
.tree-item{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);margin:2px 0}
.tree-item:hover{background:rgba(6,182,212,0.06)}
.tree-toggle{width:18px;height:18px;display:flex;align-items:center;justify-content:center;font-size:.65rem;color:var(--text-muted);transition:transform .2s}
.tree-toggle.expanded{transform:rotate(90deg)}
.tree-item-name{font-weight:500;font-size:.85rem}
.tree-item-pn{font-family:'JetBrains Mono',monospace;font-size:.72rem;color:var(--text-muted)}

/* MODAL */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.6);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;pointer-events:none;transition:opacity .2s}
.modal-overlay.active{opacity:1;pointer-events:auto}
.modal{background:var(--bg-secondary);border:1px solid var(--glass-border);border-radius:var(--radius-lg);width:90%;max-width:560px;max-height:85vh;overflow-y:auto;transform:translateY(20px);transition:transform .25s;padding:24px}
.modal-overlay.active .modal{transform:translateY(0)}
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.modal-header h2{font-size:1.1rem;font-weight:600}
.modal-footer{display:flex;justify-content:flex-end;gap:8px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}

/* TIMELINE */
.timeline{position:relative;padding-left:24px}
.timeline::before{content:'';position:absolute;left:7px;top:0;bottom:0;width:2px;background:var(--glass-border)}
.timeline-item{position:relative;margin-bottom:16px}
.timeline-dot{position:absolute;left:-20px;top:4px;width:10px;height:10px;border-radius:50%;background:var(--accent-cyan);box-shadow:0 0 8px rgba(6,182,212,0.4)}
.timeline-content{font-size:.83rem}
.timeline-date{font-size:.7rem;color:var(--text-muted)}

/* TOOLBAR */
.toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.search-box{position:relative;flex:1;min-width:200px}
.search-box input{width:100%;padding-left:32px}
.search-box::before{content:'🔍';position:absolute;left:10px;top:50%;transform:translateY(-50%);font-size:.8rem}
.filter-group{display:flex;gap:4px}
.filter-btn{padding:6px 12px;border-radius:var(--radius-sm);background:var(--bg-tertiary);color:var(--text-secondary);font-size:.75rem;border:1px solid transparent;transition:var(--transition)}
.filter-btn.active,.filter-btn:hover{color:var(--accent-cyan);border-color:var(--accent-cyan);background:rgba(6,182,212,0.08)}

/* TABS */
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--glass-border);margin-bottom:16px}
.tab{padding:8px 16px;font-size:.83rem;font-weight:500;color:var(--text-secondary);cursor:pointer;border-bottom:2px solid transparent;transition:var(--transition)}
.tab:hover{color:var(--text-primary)}
.tab.active{color:var(--accent-cyan);border-bottom-color:var(--accent-cyan)}
.hidden{display:none!important}

/* FILE UPLOAD */
.upload-zone{border:2px dashed var(--glass-border);border-radius:var(--radius);padding:32px;text-align:center;cursor:pointer;transition:var(--transition);color:var(--text-muted)}
.upload-zone:hover,.upload-zone.dragover{border-color:var(--accent-cyan);background:rgba(6,182,212,0.05);color:var(--text-secondary)}
.upload-zone .upload-icon{font-size:2rem;margin-bottom:8px}
.file-item{display:flex;align-items:center;gap:10px;padding:10px;border-radius:var(--radius-sm);background:var(--bg-tertiary);margin:6px 0}
.file-item .file-icon{font-size:1.3rem}
.file-item .file-info{flex:1}
.file-item .file-name{font-size:.83rem;font-weight:500}
.file-item .file-meta{font-size:.7rem;color:var(--text-muted)}

/* GANTT */
.gantt-row{display:flex;align-items:center;gap:12px;padding:8px 0;border-bottom:1px solid var(--border)}
.gantt-label{width:180px;font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.gantt-bar-wrapper{flex:1;height:24px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden;position:relative}
.gantt-bar{height:100%;border-radius:4px;transition:width .6s ease}
.gantt-bar.status-pending{background:var(--text-muted)}
.gantt-bar.status-preparing{background:var(--accent-yellow)}
.gantt-bar.status-machining{background:var(--accent-orange)}
.gantt-bar.status-inspecting{background:var(--accent-magenta)}
.gantt-bar.status-stored{background:var(--accent-cyan)}
.gantt-bar.status-assembled{background:var(--accent-green)}
.gantt-pct{width:40px;text-align:right;font-size:.75rem;font-family:'JetBrains Mono',monospace;color:var(--text-secondary)}

/* TOAST */
.toast-container{position:fixed;top:68px;right:20px;z-index:2000;display:flex;flex-direction:column;gap:8px}
.toast{padding:12px 16px;border-radius:var(--radius-sm);font-size:.83rem;color:#fff;animation:slideIn .3s ease;min-width:260px;display:flex;align-items:center;gap:8px;box-shadow:var(--shadow)}
.toast-success{background:linear-gradient(135deg,#059669,var(--accent-green))}
.toast-error{background:linear-gradient(135deg,#dc2626,var(--accent-red))}
.toast-info{background:linear-gradient(135deg,#0891b2,var(--accent-cyan))}

/* ANIMATIONS */
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideIn{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:translateX(0)}}
@keyframes shimmer{0%{transform:translateX(-100%)}100%{transform:translateX(300%)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
@keyframes glow{0%,100%{box-shadow:0 0 4px rgba(6,182,212,0.3)}50%{box-shadow:0 0 16px rgba(6,182,212,0.6)}}
.animate-in{animation:fadeUp .4s ease both}
.animate-pulse{animation:pulse 2s infinite}

/* RESPONSIVE — TABLET */
@media(max-width:1024px){
  :root{--ai-sidebar-w:300px}
  .user-info-text{display:none}
  .stats-grid{grid-template-columns:repeat(3,1fr)}
}
/* RESPONSIVE — MOBILE */
@media(max-width:768px){
  .app-layout{grid-template-columns:1fr!important}
  .sidebar{position:fixed;top:var(--topbar-h);left:-260px;bottom:0;width:260px;z-index:145;transition:transform .3s ease;transform:translateX(0)}
  .sidebar.mobile-open{transform:translateX(260px)}
  .mobile-nav-overlay.active{display:block}
  .mobile-menu-btn{display:block}
  .logo-text{display:none}
  .main-content{padding:12px 10px 80px}
  .mobile-bottom-nav{display:flex}
  .statusbar{display:none}
  /* 手机端统计卡片 */
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:16px}
  .stat-card{padding:14px 8px}
  .stat-value{font-size:1.4rem}
  .stat-label{font-size:.65rem;letter-spacing:0}
  /* 手机端顶栏 */
  .topbar{padding:0 10px;gap:6px}
  .topbar-right{gap:6px}
  .project-selector{max-width:100px;font-size:.7rem;padding:4px 6px}
  .user-info-text{display:none}
  .section-title{font-size:1rem;margin-bottom:12px}
  /* 手机端 AI 面板 */
  .ai-sidebar{position:fixed!important;top:var(--topbar-h);right:0;bottom:56px;width:100%!important;max-width:100%!important;z-index:160;box-shadow:-4px 0 24px rgba(0,0,0,0.5);max-height:calc(100vh - var(--topbar-h) - 56px);height:auto}
  /* 手机端卡片和表格 */
  .card{padding:12px;border-radius:var(--radius-sm)}
  .card-header{margin-bottom:10px;flex-wrap:wrap;gap:6px}
  .card-title{font-size:.88rem}
  table{font-size:.72rem}
  th{padding:6px 8px;font-size:.65rem}
  td{padding:6px 8px;font-size:.72rem}
  .modal{width:95vw;max-width:none;margin:10px auto}
  .modal-header h2{font-size:1rem}
  /* 手机端表单 */
  .form-group{margin-bottom:10px}
  .form-group label{font-size:.72rem}
  input,select,textarea{font-size:.82rem;padding:7px 10px}
  .btn{padding:8px 14px;font-size:.8rem}
  .btn-sm{padding:5px 10px;font-size:.7rem}
  /* 手机端仪表板双列变单列 */
  .main-content [style*="grid-template-columns:1fr 1fr"]{grid-template-columns:1fr!important}
  /* 手机端树状图 */
  .tree-view{font-size:.75rem}
  .tree-node{padding-left:14px}
  .tree-node-label{padding:3px 6px;gap:4px;font-size:.73rem}
  /* badge */
  .badge{font-size:.62rem;padding:2px 6px}
  /* 时间轴 */
  .timeline-item{font-size:.72rem}
  .timeline-date{font-size:.6rem}
  /* 空状态 */
  .empty-state{padding:32px 16px}
  .empty-state .empty-icon{font-size:2rem}
  .empty-state p{font-size:.8rem}
  /* toolbar */
  .toolbar{flex-wrap:wrap;gap:6px}
  .toolbar .btn{font-size:.72rem}
}
/* 小屏手机优化 */
@media(max-width:380px){
  .stats-grid{grid-template-columns:1fr 1fr;gap:6px}
  .stat-value{font-size:1.2rem}
  .project-selector{max-width:80px}
}

/* EMPTY */
.empty-state{text-align:center;padding:48px 20px;color:var(--text-muted)}
.empty-state .empty-icon{font-size:3rem;margin-bottom:12px}
.empty-state p{font-size:.9rem;margin-bottom:16px}
/* HIDDEN */
.hidden{display:none!important}
.section{display:none}
.section.active{display:block;animation:fadeUp .3s ease}

/* SPINNER */
.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,0.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite;vertical-align:middle}
@keyframes spin{to{transform:rotate(360deg)}}
.btn-loading{pointer-events:none;opacity:.8;position:relative}
.btn-loading .spinner{margin-right:6px}

/* 上传进度条 */
.upload-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(10,10,30,0.85);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:9999;animation:fadeUp .2s ease}
.upload-progress-ring{width:120px;height:120px;margin-bottom:20px}
.upload-progress-ring circle{fill:none;stroke-width:6;stroke-linecap:round}
.upload-progress-ring .bg{stroke:var(--border)}
.upload-progress-ring .fg{stroke:var(--accent-cyan);transition:stroke-dashoffset .3s ease;transform:rotate(-90deg);transform-origin:center}
.upload-text{font-size:1.1rem;color:var(--text-primary);margin-bottom:8px}
.upload-subtext{font-size:.8rem;color:var(--text-muted)}
.upload-done .fg{stroke:var(--accent-green)}

/* 页面切换 */
.page-loading{display:flex;align-items:center;justify-content:center;padding:80px 20px;gap:12px;color:var(--text-muted)}
.page-loading .spinner{width:28px;height:28px;border-width:3px}

/* 项目树状图 */
.tree-view{padding:0 0 0 8px;font-size:.82rem}
.tree-node{position:relative;padding:4px 0 4px 20px;border-left:1px solid var(--border)}
.tree-node:last-child{border-left-color:transparent}
.tree-node::before{content:'';position:absolute;left:0;top:14px;width:16px;height:1px;background:var(--border)}
.tree-node-label{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s ease}
.tree-node-label:hover{background:var(--bg-tertiary)}
.tree-node-label .badge{font-size:.65rem}
.tree-children{padding-left:4px}

/* 图纸文件夹层级 */
.file-tree{padding:4px 0}
.file-folder{margin:4px 0;border:1px solid var(--glass-border);border-radius:var(--radius-sm);overflow:hidden}
.file-folder-header{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg-tertiary);cursor:pointer;font-size:.82rem;font-weight:500;transition:var(--transition)}
.file-folder-header:hover{background:rgba(6,182,212,0.06)}
.file-folder-header .folder-icon{font-size:1rem;transition:transform .2s}
.file-folder.collapsed .folder-icon{transform:rotate(-90deg)}
.file-folder.collapsed .file-folder-body{display:none}
.file-folder-body{padding:6px 12px 8px 28px;border-top:1px solid var(--border)}
.file-entry{display:flex;align-items:center;justify-content:space-between;padding:5px 8px;border-radius:var(--radius-sm);font-size:.78rem;transition:var(--transition);margin:2px 0}
.file-entry:hover{background:rgba(6,182,212,0.04)}
.file-entry-name{display:flex;align-items:center;gap:6px;min-width:0}
.file-entry-name span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-entry-actions{display:flex;gap:4px;flex-shrink:0}

/* ANIMATE IN */
.animate-in{animation:fadeSlideIn .3s ease-out}
@keyframes fadeSlideIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* PROGRESS PAGE — 6-column stats compact */
#progress-tab-gantt .stats-grid,
.stats-grid:has(> :nth-child(6)){grid-template-columns:repeat(6,1fr)!important;gap:10px}
@media(max-width:768px){.stats-grid:has(> :nth-child(6)){grid-template-columns:repeat(3,1fr)!important}}
@media(max-width:480px){.stats-grid:has(> :nth-child(6)){grid-template-columns:repeat(2,1fr)!important}}