:root{--bg-primary: #050505;--bg-secondary: rgba(255, 255, 255, .03);--bg-tertiary: rgba(255, 255, 255, .06);--accent: #b373ff;--accent-hover: #c99aff;--accent-light: rgba(179, 115, 255, .15);--chart-1: #b373ff;--chart-2: #ff7be5;--text-main: #ffffff;--text-muted: #a5a0b7;--border: rgba(255, 255, 255, .15);--border-light: rgba(255, 255, 255, .08);--shadow-md: 0 4px 16px rgba(0, 0, 0, .5), inset 0 1px 0 rgba(255, 255, 255, .1);--shadow-lg: 0 16px 40px rgba(0, 0, 0, .8), inset 0 1px 0 rgba(255, 255, 255, .1);--radius-md: .75rem;--radius-lg: 1.25rem;--radius-xl: 1.5rem}html{min-height:100vh;width:100%;scroll-behavior:smooth}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,system-ui,sans-serif;background-color:var(--bg-primary);color:var(--text-main);line-height:1.5;-webkit-font-smoothing:antialiased;width:100%;min-height:100vh}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}.app-layout{display:flex;min-height:100vh;width:100%;position:relative;z-index:1}.app-layout:before,.app-layout:after{content:"";position:fixed;border-radius:50%;filter:blur(100px);z-index:-1;opacity:.5;pointer-events:none;will-change:transform;transform:translateZ(0)}.app-layout:before{background:#b373ff80;width:35vw;height:35vw;top:-10vw;left:-10vw}.app-layout:after{background:#ff7be566;width:30vw;height:30vw;bottom:-10vw;right:-10vw}.content-wrapper{flex:1;display:flex;flex-direction:column;min-width:0;max-width:100vw}.top-header{background-color:#17132a99;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--border-light);height:110px;min-height:110px;flex-shrink:0;position:sticky;top:0;z-index:1100}.header-content{display:flex;align-items:center;gap:1.5rem;padding:0 2rem;width:100%;height:100%}.top-header .logo{font-size:1.8rem;font-weight:800;letter-spacing:-.03em}.mobile-only{display:none}@keyframes slideSidebarIn{0%{transform:translate(-100%);opacity:0}to{transform:translate(0);opacity:1}}@keyframes slideSidebarOut{0%{transform:translate(0);opacity:1}to{transform:translate(-100%);opacity:0}}.sidebar{width:280px;flex-shrink:0;background-color:#0a0814d9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-right:1px solid var(--border-light);padding:2rem;position:sticky;top:0;height:100vh;overflow-y:auto;display:flex;flex-direction:column;gap:3rem;transition:margin-left .4s cubic-bezier(.4,0,.2,1);z-index:1000;animation:fadeIn .4s ease-out forwards}.sidebar-collapsed .sidebar{margin-left:-280px;animation:slideSidebarOut .5s ease-out forwards}.sidebar-close-btn{display:none;background:none;border:none;color:var(--text-muted);font-size:1.5rem;cursor:pointer}.sidebar-close-btn:hover{color:var(--text-main)}.sidebar-header .logo{font-size:1.75rem}.sidebar-nav{display:flex;flex-direction:column;gap:2rem}.nav-group{display:flex;flex-direction:column;gap:.5rem;padding:0 1rem}.nav-group-title{color:var(--text-muted);font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem}.sidebar-nav a{display:flex;align-items:center;padding:.75rem 1.25rem;color:var(--text-muted);text-decoration:none;border-radius:var(--radius-md);font-weight:500;transition:color .15s ease,background-color .15s ease;border:1px solid transparent}.sidebar-nav a:hover{color:var(--text-main);background-color:var(--bg-tertiary)}@keyframes plateauPulse{0%{transform:scale(1);background-color:transparent;border-color:transparent;box-shadow:0 0 0 transparent}30%{transform:scale(1.04);background-color:#9f5bff40;border-color:#9f5bff80;box-shadow:0 0 25px #9f5bff4d}70%{transform:scale(1.04);background-color:#9f5bff40;border-color:#9f5bff80;box-shadow:0 0 25px #9f5bff4d}to{transform:scale(1);background-color:var(--accent-light);border-color:#9f5bff33;box-shadow:0 0 15px #9f5bff26}}@keyframes fadeUpLoad{to{opacity:1;transform:translateY(0)}}.sidebar-nav a.active{color:var(--accent);background-color:var(--accent-light);border-color:#9f5bff33;box-shadow:0 0 15px #9f5bff26;animation:plateauPulse .6s ease-in-out forwards}.privacy-btn{display:flex;align-items:center;font-weight:600!important;color:var(--text-main)!important;border:1px solid var(--border-light)!important;background-color:#9f5bff0d!important;padding:.75rem 1rem!important;border-radius:var(--radius-md)!important;border-left:1px solid var(--border-light)!important;box-shadow:0 4px 6px -1px #0003}.privacy-btn svg{margin-right:10px;stroke:var(--accent);transition:stroke .2s ease,transform .2s ease}.privacy-btn:hover{border-color:var(--accent)!important;background-color:#9f5bff1a!important}.privacy-btn.active{border-color:var(--accent)!important;background-color:var(--accent-light)!important}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.main-content{flex:1;display:flex;flex-direction:column;min-width:0;animation:fadeIn .4s ease-out forwards}.mobile-header{display:none;align-items:center;padding:1rem 2rem;background-color:#17132ae6;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--border-light);gap:1rem;position:sticky;top:0;z-index:999}.sidebar-open-btn{background:none;border:none;color:var(--text-main);font-size:1.5rem;cursor:pointer}.sidebar-collapsed .mobile-header{display:flex}main{padding:4rem 2rem;display:flex;flex-direction:column;gap:6rem;flex:1}@media (max-width: 1024px){.sidebar{position:fixed;width:280px;margin-left:-280px;border-right:1px solid var(--border-light);padding:1.5rem;height:100%;top:0}.sidebar.open{margin-left:0;animation:slideSidebarIn .4s ease-out forwards}.sidebar-close-btn,.mobile-only{display:block}}#calculate-division,#learn-division{display:flex;flex-direction:column;gap:5rem}.calculator-section,.learn-section{background-color:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:2.5rem;scroll-margin-top:6rem;animation:fadeUpLoad .6s cubic-bezier(.2,.8,.2,1) forwards;opacity:0;transform:translateY(20px)}.calc-header h2{font-size:2.5rem;font-weight:700;letter-spacing:-.025em;margin-bottom:.5rem}.calc-header p{color:var(--text-muted);font-size:1.125rem}.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:start}@media (max-width: 900px){.calc-grid{grid-template-columns:1fr}.results-panel,.input-panel{padding:1.5rem 1rem}.input-header{flex-direction:column;align-items:flex-start;gap:.5rem}.input-value-wrapper{width:100%;max-width:none;min-width:0}}.input-panel{background-color:var(--bg-secondary);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);padding:2rem;border-radius:var(--radius-xl);border:1px solid var(--border-light);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;gap:2rem;transition:transform .3s ease,box-shadow .3s ease,background-color .3s ease;will-change:transform}.input-panel:hover{transform:translateY(-4px);box-shadow:0 20px 40px #0009,inset 0 1px #fff3}.input-group{display:flex;flex-direction:column;gap:1rem}.input-header{display:flex;justify-content:space-between;align-items:center}.input-header label{font-weight:500;color:var(--text-muted);font-size:.95rem}.input-value-wrapper{display:flex;align-items:center;background-color:var(--bg-tertiary);padding:.5rem .75rem;border-radius:var(--radius-md);border:1px solid var(--border);transition:border-color .2s ease,box-shadow .2s ease;min-width:250px;width:60%;max-width:350px}.input-value-wrapper:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.input-currency{display:none}.custom-dropdown{position:relative;margin-right:.75rem;z-index:10}.custom-dropdown-trigger{background:var(--bg-secondary);color:var(--text-main);border:1px solid var(--border);border-radius:var(--radius-md);padding:.35rem .6rem;font-family:inherit;font-size:.85rem;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:.4rem;transition:border-color .2s ease,box-shadow .2s ease;white-space:nowrap}.custom-dropdown-trigger:hover{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-light)}.custom-dropdown-trigger .dd-arrow{font-size:.6rem;transition:transform .3s ease}.custom-dropdown.open .dd-arrow{transform:rotate(180deg)}.custom-dropdown-menu{position:absolute;top:calc(100% + 6px);left:0;min-width:140px;max-height:0;overflow:hidden;background:#140f28f7;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--border-light);border-radius:var(--radius-md);box-shadow:0 15px 40px #0009;opacity:0;transform:translateY(-8px);transition:max-height .3s ease,opacity .25s ease,transform .25s ease;z-index:100}.custom-dropdown.open .custom-dropdown-menu{max-height:250px;overflow-y:auto;opacity:1;transform:translateY(0)}.custom-dropdown-menu::-webkit-scrollbar{width:4px}.custom-dropdown-menu::-webkit-scrollbar-track{background:transparent}.custom-dropdown-menu::-webkit-scrollbar-thumb{background:var(--accent);border-radius:4px}.custom-dropdown-item{padding:.5rem .75rem;font-size:.85rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:background .15s ease,color .15s ease}.custom-dropdown-item:hover{background:#8b5cf626;color:var(--text-main)}.custom-dropdown-item.selected{color:var(--accent);background:#8b5cf61a}.currency-symbol,.percent-symbol,.unit-symbol{color:var(--text-muted);font-weight:500;font-size:.9rem}.currency-symbol{margin-right:.5rem}.percent-symbol,.unit-symbol{margin-left:.5rem}input[type=number],input[type=text]{background:transparent;border:none;color:var(--text-main);font-weight:600;font-size:1.125rem;font-family:inherit;width:100%;flex:1;min-width:0;text-align:right;outline:none;-moz-appearance:textfield}input[type=number]::-webkit-outer-spin-button,input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.slider{-webkit-appearance:none;width:100%;height:6px;background:linear-gradient(to right,var(--accent) var(--fill, 50%),var(--bg-tertiary) var(--fill, 50%));border-radius:3px;outline:none;cursor:pointer}.slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--accent);cursor:pointer;border:2px solid var(--bg-secondary);box-shadow:var(--shadow-md);transition:transform .1s ease,background .2s ease}.slider::-webkit-slider-thumb:hover{transform:scale(1.15);background:var(--accent-hover)}.slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--accent);cursor:pointer;border:2px solid var(--bg-secondary);box-shadow:var(--shadow-md);transition:transform .1s ease,background .2s ease}.slider::-moz-range-thumb:hover{transform:scale(1.15);background:var(--accent-hover)}.results-panel{background-color:var(--bg-secondary);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);padding:2rem;border-radius:var(--radius-xl);border:1px solid var(--border-light);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;gap:2.5rem;overflow:visible;transition:transform .3s ease,box-shadow .3s ease,background-color .3s ease;will-change:transform}.results-panel:hover{transform:translateY(-4px);box-shadow:0 20px 40px #0009,inset 0 1px #fff3}.result-highlight{text-align:center}.result-highlight h3{color:var(--text-muted);font-size:1rem;font-weight:500;margin-bottom:.5rem;text-transform:uppercase;letter-spacing:.05em}.highlight-value{font-size:2.5rem;font-weight:700;color:var(--accent);letter-spacing:-.025em}.chart-container{width:100%;max-width:550px;height:320px;position:relative;display:flex;align-items:center;justify-content:center;margin:0 auto}.chart-container canvas{display:block;background-color:transparent}.chart-container:hover canvas{opacity:.95}.chart-center-label{position:absolute;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;z-index:1;width:70%}.chart-center-title{color:var(--text-muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.25rem}.chart-center-value{color:var(--text-main);font-size:1.25rem;font-weight:700;white-space:nowrap}.result-details{width:100%;display:flex;flex-direction:column;gap:1rem}.detail-row{display:flex;align-items:center;justify-content:space-between;padding-bottom:1rem;border-bottom:1px solid var(--border-light);font-size:.95rem}.detail-row:last-child{border-bottom:none;padding-bottom:0}.detail-row span:nth-child(2){color:var(--text-muted);flex-grow:1;margin-left:.75rem}.detail-row strong{font-weight:600}.total-row{margin-top:.5rem;padding-top:1rem;border-top:1px dashed var(--border);font-size:1.125rem}.total-row span{color:var(--text-main)!important;font-weight:600;margin-left:0!important}.total-row strong{color:var(--accent)}.learn-section{background-color:var(--bg-secondary);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);padding:3rem;border-radius:var(--radius-xl);border:1px solid var(--border-light);box-shadow:var(--shadow-lg);transition:transform .3s ease,box-shadow .3s ease,background-color .3s ease;will-change:transform}.learn-section:hover{transform:translateY(-4px);box-shadow:0 20px 40px #0009,inset 0 1px #fff3}.learn-section h2{font-size:2rem;margin-bottom:1.5rem;color:var(--text-main);letter-spacing:-.02em}.learn-section h3{margin-top:2rem;margin-bottom:1rem;color:var(--text-main);font-size:1.25rem}.learn-section p,.learn-section li{color:var(--text-muted);margin-bottom:1rem;line-height:1.7}.learn-section ul{margin-left:1.5rem;margin-bottom:1.5rem}.learn-section strong{color:var(--text-main)}.dot{width:10px;height:10px;border-radius:50%;display:inline-block}.principal-dot{background-color:var(--chart-1)}.interest-dot{background-color:var(--chart-2)}footer{text-align:center;padding:3rem 0;color:var(--text-muted);border-top:1px solid var(--border-light)}@media (max-width: 768px){.calculator-section{padding:1.5rem 1rem}.input-value-wrapper{min-width:0!important;width:100%!important;max-width:none!important}.container{padding:0 1rem}.results-panel,.input-panel{padding:1.5rem 1rem}}