@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{font-family:Inter,sans-serif;line-height:1.5;font-weight:400;color-scheme:dark;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;min-width:320px;min-height:100vh}#root{width:100%}:root{--primary-color: #2563eb;--primary-hover: #1d4ed8;--secondary-color: #10b981;--danger-color: #ef4444;--bg-color: #0f172a;--surface-color: #1e293b;--surface-light: #334155;--text-color: #f1f5f9;--text-muted: #94a3b8;--border-color: #334155;--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .4), 0 4px 6px -2px rgba(0, 0, 0, .2);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .3)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-color);color:var(--text-color);line-height:1.6}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:linear-gradient(135deg,#1e293b,#0f172a);padding:3rem 2rem;text-align:center;border-bottom:1px solid var(--border-color)}.title-area h1{font-size:3rem;margin-bottom:.5rem;font-weight:800;background:linear-gradient(135deg,#60a5fa,#2563eb);-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.025em}.title-area p{color:var(--text-muted);font-size:1.2rem}.app-main{flex:1;max-width:1200px;width:100%;margin:0 auto;padding:2rem}.settings-bar{background:#2563eb;margin-top:-3.5rem;margin-bottom:3rem;padding:1.5rem 2.5rem;border-radius:16px;display:flex;justify-content:space-between;align-items:center;box-shadow:var(--shadow-lg);z-index:10;position:relative}.vat-control-large{display:flex;align-items:center;gap:20px;width:100%;justify-content:center}.vat-text{font-size:1.25rem;font-weight:700;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.1)}.large-switch{position:relative;display:inline-block;width:64px;height:34px}.large-switch input{opacity:0;width:0;height:0}.large-slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#ffffff4d;transition:.4s;border-radius:34px;border:2px solid white}.large-slider:before{position:absolute;content:"";height:24px;width:24px;left:3px;bottom:3px;background-color:#fff;transition:.4s;border-radius:50%;box-shadow:0 2px 4px #0003}input:checked+.large-slider{background-color:#fff}input:checked+.large-slider:before{transform:translate(30px);background-color:#2563eb}.section{background:var(--surface-color);border-radius:16px;padding:2.5rem;margin-bottom:3rem;box-shadow:var(--shadow-md);border:1px solid var(--border-color)}.section h2{font-size:1.75rem;margin-bottom:1.5rem;color:var(--text-color);font-weight:700;border-left:4px solid var(--primary-color);padding-left:1rem}.section-instruction{background:#2563eb1a;padding:1rem 1.5rem;border-radius:8px;border-left:4px solid var(--primary-color);color:var(--text-color);font-size:1rem;margin-bottom:2rem}.section-instruction a{color:#60a5fa;font-weight:600;text-decoration:none}.section-instruction a:hover{text-decoration:underline}.app-footer{margin-top:auto;padding:3rem 2rem;text-align:center;color:var(--text-muted);font-size:.95rem;border-top:1px solid var(--border-color)}.app-footer a{color:var(--primary-color);text-decoration:none}@media (max-width: 768px){.title-area h1{font-size:2.2rem}.settings-bar{padding:1rem;margin-top:-2rem}.vat-text{font-size:1.1rem}.app-main{padding:1rem}.section{padding:1.5rem}}.price-chart{width:100%}.date-navigation{display:flex;align-items:center;justify-content:center;gap:1rem;margin-bottom:1.5rem;padding:1rem;background:var(--bg-color);border-radius:8px;border:1px solid var(--border-color)}.nav-button{display:flex;align-items:center;gap:.5rem;padding:.75rem 1.25rem;background:var(--surface-color);border:1px solid var(--border-color);border-radius:8px;color:var(--text-color);font-size:.95rem;font-weight:500;cursor:pointer;transition:all .2s}.nav-button:hover{background:var(--primary-color);border-color:var(--primary-color);transform:translateY(-1px)}.nav-button:active{transform:translateY(0)}.nav-icon{width:20px;height:20px}.date-picker{display:flex;flex-direction:column;align-items:center;gap:.5rem;position:relative}.date-input{padding:.75rem 1rem;background:var(--surface-color);border:1px solid var(--border-color);border-radius:8px;color:var(--text-color);font-size:.95rem;cursor:pointer;transition:border-color .2s}.date-input:hover{border-color:var(--primary-color)}.date-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #2563eb1a}.date-display{font-size:.875rem;color:var(--text-muted);text-align:center;min-width:250px}.chart-container{height:400px;margin-bottom:1.5rem}.chart-loading,.chart-error{text-align:center;padding:3rem;color:var(--text-muted)}.chart-error{color:var(--danger-color)}.nav-button:disabled{background:var(--surface-color);border-color:var(--border-color);color:var(--text-muted);cursor:not-allowed;transform:none;opacity:.5}.no-data-message{display:flex;align-items:center;justify-content:center;height:100%;color:var(--text-muted);font-style:italic;background:#0f172a80;border-radius:8px;border:1px dashed var(--border-color)}.price-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.stat{background:var(--bg-color);padding:1rem;border-radius:8px;border:1px solid var(--border-color);display:flex;flex-direction:column;gap:.5rem}.stat-label{color:var(--text-muted);font-size:.875rem;font-weight:500}.stat-value{color:var(--primary-color);font-size:1.25rem;font-weight:700}@media (max-width: 768px){.date-navigation{flex-direction:column;gap:.75rem}.nav-button{width:100%;justify-content:center}.date-display{min-width:auto;font-size:.8rem}.chart-container{height:300px}}.csv-upload{width:100%}.upload-area{border:2px dashed var(--border-color);border-radius:12px;padding:3rem 2rem;text-align:center;cursor:pointer;transition:all .3s ease;background:var(--bg-color)}.upload-area:hover{border-color:var(--primary-color);background:#2563eb0d}.upload-area.dragging{border-color:var(--primary-color);background:#2563eb1a;transform:scale(1.02)}.upload-area.processing{cursor:not-allowed;opacity:.7}.upload-icon{width:64px;height:64px;margin:0 auto 1rem;color:var(--primary-color)}.upload-text{font-size:1.1rem;margin-bottom:.5rem;color:var(--text-color)}.upload-text strong{color:var(--primary-color)}.upload-hint{color:var(--text-muted);font-size:.9rem;margin-bottom:1rem}.upload-privacy{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:#10b9810d;border-radius:20px;color:#10b981;font-size:.8rem;margin-top:.5rem}.privacy-icon{width:14px;height:14px}.upload-status{display:flex;flex-direction:column;align-items:center;gap:1rem}.spinner{width:48px;height:48px;border:4px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.upload-error{display:flex;align-items:center;gap:.75rem;margin-top:1rem;padding:1rem;background:#ef44441a;border:1px solid var(--danger-color);border-radius:8px;color:var(--danger-color)}.error-icon{width:24px;height:24px;flex-shrink:0}.consumption-chart{width:100%}.chart-info{display:flex;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}.info-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:var(--bg-color);border:1px solid var(--border-color);border-radius:6px;font-size:.875rem;color:var(--text-muted)}.chart-container{height:400px}.chart-empty{text-align:center;padding:3rem;color:var(--text-muted)}@media (max-width: 768px){.chart-container{height:300px}}.statistics{width:100%}.stats-empty{text-align:center;padding:3rem;color:var(--text-muted)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-bottom:2rem}.stat-card{background:var(--bg-color);border-radius:12px;padding:1.5rem;border:2px solid var(--border-color);display:flex;gap:1rem;transition:transform .2s,box-shadow .2s}.stat-card:hover{transform:translateY(-2px);box-shadow:0 8px 16px #0000004d}.stat-card.purchase{border-color:#2563eb80}.stat-card.sale{border-color:#10b98180}.stat-card.weighted{border-color:#f59e0b80}.stat-card.balance.positive{border-color:#10b98180}.stat-card.balance.negative{border-color:#ef444480}.stat-icon{font-size:2.5rem;line-height:1}.stat-content{flex:1}.stat-content h3{font-size:.875rem;color:var(--text-muted);margin-bottom:.5rem;font-weight:500}.stat-value{font-size:1.5rem;font-weight:700;color:var(--text-color);margin-bottom:.25rem}.stat-cost{font-size:1.1rem;color:var(--primary-color);font-weight:600}.stat-card.sale .stat-cost{color:var(--secondary-color)}.stat-hint{font-size:.8rem;color:var(--text-muted);margin-top:.25rem}.stats-summary{background:var(--bg-color);border-radius:12px;padding:1.5rem;border:1px solid var(--border-color)}.stats-summary h3{font-size:1.1rem;margin-bottom:1rem;color:var(--text-color)}.summary-grid{display:flex;flex-direction:column;gap:.75rem}.summary-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem;background:var(--surface-color);border-radius:6px}.summary-label{color:var(--text-muted);font-size:.9rem}.summary-value{color:var(--text-color);font-weight:600;font-size:1rem}@media (max-width: 768px){.stats-grid{grid-template-columns:1fr}}