:root{--primary: #818cf8;--primary-hover: #6366f1;--text-main: #f1f5f9;--text-secondary: #cbd5e1;--border-color: rgba(255, 255, 255, .15);--card-bg: rgba(30, 41, 59, .75);--success: #34d399;--error: #f87171}*{box-sizing:border-box}body{margin:0;font-family:Poppins,sans-serif;color:var(--text-main);background:linear-gradient(-45deg,#1e293b,#312e81,#4338ca,#334155);background-size:400% 400%;animation:gradient 15s ease infinite;min-height:100vh}@keyframes gradient{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}.app-container{max-width:1400px;margin:0 auto;padding:2rem;min-height:100vh}header{margin-bottom:2.5rem;text-align:center;padding:2rem;background:#1e293bd9;border-radius:20px;box-shadow:0 8px 32px #00000026;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color)}header h1{font-size:2.5rem;font-weight:700;color:#fff;margin-bottom:.5rem;background:linear-gradient(to right,#a5b4fc,#e879f9);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}header p{color:var(--text-secondary);font-size:1.1rem;font-weight:400;letter-spacing:.05em}.main-content{display:grid;grid-template-columns:350px 1fr;gap:2rem;align-items:start}.card{background:var(--card-bg);box-shadow:0 8px 32px #00000026;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-radius:20px;border:1px solid var(--border-color);padding:1.5rem;margin-bottom:2rem;transition:transform .3s ease,box-shadow .3s ease}.card:hover{transform:translateY(-5px);box-shadow:0 12px 40px #00000040;border-color:#ffffff40;background:#1e293bd9}.card h2,.card h3{margin-top:0;font-weight:600;color:#f1f5f9;margin-bottom:1.25rem;border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;border-radius:12px;font-weight:600;cursor:pointer;transition:all .3s;border:none;font-size:1rem;width:100%;font-family:Poppins,sans-serif;letter-spacing:.025em}.btn-primary{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;box-shadow:0 4px 15px #6366f14d}.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,#4f46e5,#7c3aed);box-shadow:0 6px 20px #6366f180;transform:scale(1.02)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}input[type=file]{display:block;width:100%;max-width:100%;font-size:.9rem;color:var(--text-secondary);margin-bottom:1rem;background:#00000026;padding:10px;border-radius:12px;border:1px solid var(--border-color)}input[type=file]::file-selector-button{margin-right:1rem;padding:.5rem 1rem;border-radius:8px;border:none;background:#475569;color:#fff;font-weight:500;cursor:pointer;transition:all .2s}input[type=file]::file-selector-button:hover{background:#64748b}.history-list{list-style:none;padding:0;margin:0;max-height:400px;overflow-y:auto}.history-item{padding:1rem;border-radius:12px;margin-bottom:.75rem;cursor:pointer;transition:all .2s;background:#ffffff0d;border:1px solid transparent}.history-item:hover{background-color:#ffffff1a;transform:translate(5px)}.history-item.active{background-color:#6366f133;border-left:4px solid #818cf8}.history-meta{font-size:.8rem;color:var(--text-secondary);margin-top:.25rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:2rem;margin-bottom:2rem}.stat-card{background:linear-gradient(135deg,#312e81,#4338ca);padding:1rem 2rem;border-radius:20px;color:#fff;box-shadow:0 8px 20px #0003;display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:180px;border:1px solid rgba(255,255,255,.15);transition:transform .3s}.stat-card:hover{transform:scale(1.05);border-color:#6366f180}.stat-value{font-size:3rem;font-weight:800;background:linear-gradient(to right,#a5b4fc,#34d399);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.stat-label{font-size:.9rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:#cbd5e1}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:#0000000d}::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#ffffff40}.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.chart-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}@media(max-width:1100px){.main-content{grid-template-columns:1fr}.left-panel{display:grid;grid-template-columns:1fr 1fr;gap:2rem}}@media(max-width:768px){.app-container{padding:1rem}header{padding:1.5rem;margin-bottom:1.5rem}header h1{font-size:1.8rem}.left-panel,.stats-grid{grid-template-columns:1fr;gap:1.5rem}.stat-card{min-width:100%}.card{padding:1rem}.dashboard-header{flex-direction:column;align-items:flex-start;gap:1rem}.dashboard-header>div{width:100%}.chart-header{flex-direction:column;align-items:flex-start;gap:1rem}.chart-header select{width:100%}}@media(max-width:480px){header h1{font-size:1.5rem}.stat-value{font-size:2.5rem}}