body{margin:0;padding:0}:root{--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);--success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);--warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);--dark-bg: #0f0f23;--card-bg: #1a1a2e;--card-bg-light: #252542;--text-primary: #ffffff;--text-secondary: #a0a0c0;--border-color: #2d2d4a;--success: #00f2fe;--warning: #fee140;--danger: #f5576c;--shadow: 0 8px 32px rgba(0, 0, 0, .3);--shadow-lg: 0 12px 48px rgba(0, 0, 0, .4)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--dark-bg);color:var(--text-primary);line-height:1.6;min-height:100vh}.app{min-height:100vh;padding:2rem;background:linear-gradient(135deg,#0f0f23,#1a1a2e)}.container{max-width:1600px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:2rem}@media(max-width:1200px){.container{grid-template-columns:1fr}}.input-form,.results{background:var(--card-bg);border-radius:20px;padding:2rem;box-shadow:var(--shadow);border:1px solid var(--border-color);transition:transform .3s ease,box-shadow .3s ease}.input-form:hover,.results:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.input-form h2,.results h2{background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:2rem;margin-bottom:1.5rem;font-weight:700}.input-form h3,.results h3{color:var(--text-primary);font-size:1.3rem;margin:2rem 0 1rem;font-weight:600}.form-group{margin-bottom:1.5rem}.form-group label{display:block;color:var(--text-secondary);margin-bottom:.5rem;font-weight:500;font-size:.9rem;text-transform:uppercase;letter-spacing:.5px}.form-group input{width:100%;padding:.875rem 1rem;background:var(--card-bg-light);border:2px solid var(--border-color);border-radius:10px;color:var(--text-primary);font-size:1rem;transition:all .3s ease;outline:none}.form-group input:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea1a;background:var(--card-bg)}.form-group input:hover{border-color:#667eea}.balance-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}@media(max-width:768px){.balance-grid{grid-template-columns:1fr}}.bills-section{margin:1.5rem 0}.bills-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.bills-header h3{margin:0}.add-bill-btn{background:var(--success-gradient);color:#fff;border:none;padding:.625rem 1.25rem;border-radius:10px;cursor:pointer;font-weight:600;font-size:.9rem;transition:all .3s ease;box-shadow:0 4px 12px #4facfe4d}.add-bill-btn:hover{transform:translateY(-2px);box-shadow:0 6px 16px #4facfe66}.add-bill-btn:active{transform:translateY(0)}.no-bills{color:var(--text-secondary);font-style:italic;padding:1rem;text-align:center}.bills-list{display:flex;flex-direction:column;gap:.75rem}.bill-item{display:grid;grid-template-columns:100px 1fr auto;gap:1rem;align-items:center;background:var(--card-bg-light);padding:.75rem;border-radius:10px;border:1px solid var(--border-color);transition:all .3s ease}.bill-item:hover{border-color:#667eea;background:var(--card-bg)}.bill-item label{color:var(--text-secondary);font-weight:500;font-size:.9rem}.bill-item input{padding:.625rem;background:var(--card-bg);border:1px solid var(--border-color);border-radius:8px;color:var(--text-primary);font-size:.95rem;transition:all .3s ease}.bill-item input:focus{border-color:#667eea;outline:none}.bill-item-detailed{display:grid;grid-template-columns:auto 1fr auto;gap:1rem;align-items:center;background:var(--card-bg-light);padding:1rem;border-radius:10px;border:1px solid var(--border-color);transition:all .3s ease}.bill-item-detailed:hover{border-color:#667eea;background:var(--card-bg)}.bill-reorder{display:flex;flex-direction:column;gap:.25rem;align-items:center;padding-right:.5rem;border-right:1px solid var(--border-color)}.bill-fields{display:grid;grid-template-columns:2fr 1fr 1.5fr;gap:.75rem;flex:1}.bill-row{display:grid;grid-template-columns:2fr 1fr 1.5fr auto;gap:.75rem;align-items:end}.bill-row:last-child{align-items:center}.bill-actions{display:flex;gap:.25rem;align-items:center}.move-btn{background:transparent;color:var(--text-primary);border:none;width:24px;height:32px;border-radius:4px;cursor:pointer;font-size:1.4rem;font-weight:400;display:flex;align-items:center;justify-content:center;transition:all .2s ease;padding:0}.move-btn:hover:not(:disabled){color:#667eea;transform:scale(1.2)}.move-btn:disabled{opacity:.2;cursor:not-allowed}.move-btn:active:not(:disabled){transform:scale(1)}.bill-field{display:flex;flex-direction:column;gap:.25rem}.bill-field label{color:var(--text-secondary);font-weight:500;font-size:.8rem;text-transform:uppercase;letter-spacing:.5px}.bill-field input,.bill-field select{padding:.625rem;background:var(--card-bg);border:1px solid var(--border-color);border-radius:8px;color:var(--text-primary);font-size:.95rem;transition:all .3s ease;outline:none}.bill-field input:focus,.bill-field select:focus{border-color:#667eea}.remove-btn{background:var(--secondary-gradient);color:#fff;border:none;width:36px;height:36px;border-radius:8px;cursor:pointer;font-size:1.5rem;font-weight:700;display:flex;align-items:center;justify-content:center;transition:all .3s ease;box-shadow:0 4px 12px #f5576c4d}.remove-btn:hover{transform:scale(1.1);box-shadow:0 6px 16px #f5576c66}.remove-btn:active{transform:scale(.95)}.clear-btn{width:100%;margin-top:2rem;padding:.75rem;background:transparent;color:var(--text-secondary);border:1px solid var(--border-color);border-radius:8px;font-size:.9rem;font-weight:500;cursor:pointer;transition:all .3s ease}.clear-btn:hover{border-color:var(--danger);color:var(--danger);background:#f5576c0d}.clear-btn:active{transform:scale(.98)}.date-info{display:flex;gap:2rem;margin-bottom:2rem;padding:1rem;background:var(--card-bg-light);border-radius:12px;border:1px solid var(--border-color)}.info-item{display:flex;flex-direction:column;gap:.25rem}.info-item .label{color:var(--text-secondary);font-size:.85rem;text-transform:uppercase;letter-spacing:.5px}.info-item .value{color:var(--text-primary);font-size:1.1rem;font-weight:600}.results-summary{display:flex;flex-direction:column;gap:1rem;margin-bottom:2rem}.result-card{background:var(--card-bg-light);padding:1.25rem;border-radius:12px;border:2px solid var(--border-color);transition:all .3s ease}.result-card:hover{border-color:#667eea;transform:translate(4px)}.result-card.highlight{background:linear-gradient(135deg,#667eea1a,#764ba21a);border:2px solid #667eea}.result-card.positive{background:linear-gradient(135deg,#4facfe1a,#00f2fe1a);border-color:var(--success)}.result-card.negative{background:linear-gradient(135deg,#f5576c1a,#fa709a1a);border-color:var(--danger)}.result-label{color:var(--text-secondary);font-size:.9rem;margin-bottom:.5rem;text-transform:uppercase;letter-spacing:.5px}.result-value{color:var(--text-primary);font-size:1.75rem;font-weight:700}.result-breakdown{margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--border-color);color:var(--text-secondary);font-size:.85rem}.intermediate-steps{margin-top:2rem}.payment-details{margin-bottom:2rem;background:var(--card-bg-light);padding:1.5rem;border-radius:12px;border:1px solid var(--border-color)}.payment-details h4{color:var(--text-primary);margin-bottom:1rem;font-size:1.1rem;font-weight:600}.payments-list{display:flex;flex-direction:column;gap:.75rem;margin-bottom:1rem}.payment-item{padding:1rem;border-radius:10px;background:var(--card-bg);border-left:4px solid transparent;transition:all .3s ease}.payment-item.included{border-left-color:var(--success);background:linear-gradient(90deg,rgba(0,242,254,.05) 0%,var(--card-bg) 100%)}.payment-item.excluded{border-left-color:var(--text-secondary);opacity:.6}.payment-item:hover{transform:translate(4px)}.payment-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}.payment-value{color:var(--text-primary);font-size:1.1rem;font-weight:600}.payment-value .frequency{color:var(--text-secondary);font-size:.85rem;font-weight:400;margin-left:.5rem}.payment-label{color:var(--text-primary);font-size:.95rem;font-weight:500;opacity:.9}.payment-reason{color:var(--text-secondary);font-size:.85rem}.payment-total{padding-top:1rem;border-top:2px solid var(--border-color);color:var(--text-secondary);font-size:1rem}.payment-total strong{color:var(--text-primary);font-size:1.2rem;margin-left:.5rem}
