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#1e293b;--surface-elevated: #334155;--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--text-tertiary: #94a3b8;--accent-primary: #3b82f6;--accent-hover: #2563eb;--accent-light: #60a5fa;--success: #10b981;--warning: #f59e0b;--error: #ef4444;--border: rgba(148, 163, 184, .1);--border-hover: rgba(148, 163, 184, .2);--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .3), 0 4px 6px -2px rgba(0, 0, 0, .2);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .4), 0 10px 10px -5px rgba(0, 0, 0, .2);--glow-accent: 0 0 20px rgba(59, 130, 246, .3);--glow-success: 0 0 20px rgba(16, 185, 129, .3)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe 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.2s}.session-item:hover{border-color:var(--border-hover);background:var(--surface);transform:translate(4px)}.session-item.active{border-color:var(--accent-primary);background:var(--surface);box-shadow:var(--glow-accent)}.session-item.active:before{height:60%}.session-title{font-weight:600;color:var(--text-primary);margin-bottom:8px}.session-meta{display:flex;justify-content:space-between;gap:16px;font-size:.85rem;color:var(--text-tertiary)}.stat-row{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:24px}.stat{background:var(--bg-secondary);border-radius:12px;padding:16px 20px;min-width:130px;border:1px solid var(--border);transition:all .2s;flex:1}.stat:hover{border-color:var(--border-hover);transform:translateY(-2px);box-shadow:var(--shadow)}.stat-label{display:block;font-size:.85rem;color:var(--text-tertiary);margin-bottom:8px;font-weight:500;text-transform:uppercase;letter-spacing:.05em}.stat-value{font-size:2rem;font-weight:700;color:var(--text-primary);font-family:JetBrains 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td{border-bottom:none}.placeholder{color:var(--text-tertiary);font-style:italic}.empty{color:var(--text-tertiary);font-style:italic;padding:40px 20px;text-align:center;font-size:1.05rem}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:768px){#app{padding:20px 16px}.hero{flex-direction:column;align-items:flex-start}h1{font-size:2rem}.actions{width:100%}.upload-bar{flex-direction:column;align-items:stretch}.grid{grid-template-columns:1fr}.card{padding:20px}.stat-row{flex-direction:column}.stat{min-width:auto}table{font-size:.8rem}th,td{padding:12px 8px}}@media(max-width:480px){h1{font-size:1.75rem}.eyebrow{font-size:.75rem}.sub{font-size:.95rem}.btn{padding:10px 18px;font-size:.9rem}.stat-value{font-size:1.5rem}.heat-cell{min-height:40px;font-size:.85rem}}@media print{body{background:#fff;color:#000}.btn,.upload-bar,.actions{display:none}.card{box-shadow:none;border:1px solid #ddd;page-break-inside:avoid}}