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72px}.train-header-card,.train-chart-card{padding:12px}.train-title{font-size:16px}.train-stats{grid-template-columns:repeat(2,1fr);gap:8px}.train-stat-value{font-size:18px}.train-chart-container{min-height:180px;margin:0 -4px}.train-progress-eta{flex-wrap:wrap;gap:8px}.train-list{padding:12px 12px 72px}.train-config{grid-template-columns:1fr}.bottom-tabs{z-index:50;background:var(--surface);border-top:1px solid var(--border);padding:6px 0 env(safe-area-inset-bottom,6px);display:flex;position:fixed;bottom:0;left:0;right:0}.bottom-tab{color:var(--text-dim);flex-direction:column;flex:1;align-items:center;gap:2px;padding:6px 0;font-size:10px;transition:color .15s;display:flex}.bottom-tab--active{color:var(--accent)}.message-feed,.file-browser,.welcome{padding-bottom:72px}}::selection{background:var(--accent);color:#fff}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@keyframes messageEnter{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.message-enter{animation:.3s ease-out messageEnter}@keyframes skeletonPulse{0%,to{opacity:.3}50%{opacity:.6}}.skeleton{background:var(--surface);border-radius:var(--radius);animation:1.5s ease-in-out infinite skeletonPulse}.sb-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px;display:flex}.sb-brand{align-items:center;gap:10px;display:flex}.sb-logo{border-radius:var(--radius);color:#fff;background:linear-gradient(135deg,#10b981,#059669);justify-content:center;align-items:center;width:32px;height:32px;font-size:14px;font-weight:700;display:flex;box-shadow:0 0 16px #10b98126}.sb-brand-name{color:var(--text);font-size:14px;font-weight:600}.sb-brand-stats{color:var(--text-muted);font-size:10px}.sb-tabs{border-radius:var(--radius);background:#ffffff0a;gap:2px;margin:12px 12px 0;padding:2px;display:flex}.sb-tab{text-align:center;color:var(--text-muted);background:0 0;border-radius:6px;flex:1;padding:6px;font-size:11px;font-weight:500;transition:all .2s}.sb-tab--active{color:var(--accent-glow);background:#10b98126}.sb-list{flex:1;padding:8px;overflow-y:auto}.sb-list::-webkit-scrollbar{width:4px}.sb-list::-webkit-scrollbar-track{background:0 0}.sb-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.sb-conv{border:1px solid var(--border-light);border-radius:var(--radius-lg);text-align:left;align-items:flex-start;gap:10px;width:100%;margin-bottom:6px;padding:12px;transition:all .15s;display:flex;position:relative}.sb-conv:hover{border-color:var(--border);background:#ffffff05}.sb-conv--active{background:#10b9811a;border-color:#10b98133}.sb-conv-bar{background:var(--accent);border-radius:0 2px 2px 0;width:3px;position:absolute;top:12px;bottom:12px;left:0}.sb-conv-unread{background:var(--accent);border-radius:50%;width:8px;height:8px;position:absolute;top:12px;right:12px}.sb-conv-body{flex:1;min-width:0}.sb-conv-top{justify-content:space-between;align-items:center;margin-bottom:2px;display:flex}.sb-conv-title{color:var(--text);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:600;overflow:hidden}.sb-conv-time{color:var(--text-muted);flex-shrink:0;margin-left:8px;font-size:10px}.sb-conv-preview{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;margin-bottom:4px;font-size:11px;overflow:hidden}.sb-conv-tags{gap:6px;display:flex}.sb-tag{background:var(--accent-dim);color:var(--accent-glow);border-radius:4px;padding:2px 8px;font-size:9px}.sb-tag--dim{color:var(--text-muted);background:#ffffff0a}.sb-empty{text-align:center;color:var(--text-muted);padding:24px 16px;font-size:13px}.avatar{border-radius:var(--radius);color:#fff;flex-shrink:0;justify-content:center;align-items:center;font-weight:700;display:flex}.sb-bottom{border-top:1px solid var(--border);padding:8px 12px 12px}.sb-links{gap:8px;margin-bottom:8px;display:flex}.sb-link{border-radius:var(--radius);color:var(--text-muted);background:#ffffff0a;flex:1;justify-content:center;align-items:center;gap:6px;padding:8px;font-size:11px;transition:all .15s;display:flex}.sb-link:hover{background:var(--accent-dim);color:var(--text)}.sb-link--active{background:var(--accent-dim);color:var(--accent)}.msg{padding:2px 0}.msg--grouped{padding:0}.msg-header{align-items:baseline;gap:8px;margin-bottom:4px;display:flex}.msg-avatar{border-radius:var(--radius);color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:10px;font-weight:700;display:flex;position:relative;top:3px}.msg-sender{color:var(--text);font-size:13px;font-weight:600}.msg-time{color:var(--text-muted);font-size:10px}.msg-body{color:var(--text);font-size:14px;line-height:1.6}.msg-body--indented{margin-left:36px}.msg-body p{margin:0 0 8px}.msg-body p:last-child{margin-bottom:0}.msg-body ul,.msg-body ol{margin:4px 0;padding-left:20px}.msg-body blockquote{border-left:3px solid var(--accent);color:var(--text-secondary);margin:8px 0;padding-left:12px}.time-separator{text-align:center;margin:16px 0}.time-separator-pill{color:var(--text-muted);background:#ffffff0a;border-radius:10px;padding:3px 12px;font-size:10px}.skeleton-feed{padding:20px}.skeleton-group{margin-bottom:24px}.skeleton-header{align-items:center;gap:8px;margin-bottom:8px;display:flex}.skeleton-avatar{border-radius:var(--radius);width:28px;height:28px}.skeleton-name{width:100px;height:12px}.skeleton-time{width:40px;height:10px}.skeleton-lines{flex-direction:column;gap:6px;margin-left:36px;display:flex}.skeleton-line{height:12px}.skeleton-line--long{width:200px}.skeleton-line--medium{width:160px}