@import"https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&display=swap";@import"https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css";:root{--primary-color: #2c3e50;--secondary-color: #3498db;--accent-color: #e74c3c;--background-color: #f4f6f7;--text-primary: #2c3e50;--text-secondary: #34495e;--card-background: #ffffff;--hover-color: #2980b9}body{font-family:Montserrat,sans-serif;line-height:1.6;color:var(--text-primary);background-color:var(--background-color)}.navbar{background-color:var(--card-background);padding:1rem;position:fixed;top:0;left:0;width:100%;z-index:1000;box-shadow:0 2px 10px #0000001a;display:flex;justify-content:space-between;align-items:center}.logo a{color:var(--primary-color);font-size:1.8rem;font-weight:700;text-decoration:none;transition:color .3s ease}.nav-links{display:flex;list-style:none}.nav-links li{margin-left:1.5rem}.nav-links a{color:var(--text-secondary);text-decoration:bold;font-weight:500;transition:color .3s ease}.nav-links a:hover{color:var(--secondary-color)}.hero-section{padding:6rem 2rem 4rem;text-align:center;background:linear-gradient(135deg,var(--background-color),#ffffff)}.hero-section .overlay{max-width:900px;margin:0 auto}.hero-section h1{color:var(--primary-color);font-size:3rem;margin-bottom:1rem;font-weight:700}.hero-section p{color:var(--text-secondary);font-size:1.1rem;max-width:800px;margin:0 auto}.topics{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;max-width:1200px;margin:3rem auto;padding:0 1rem}.topic-card{background-color:var(--card-background);border-radius:10px;padding:2rem;text-align:center;box-shadow:0 4px 15px #0000001a;transition:transform .3s,box-shadow .3s;cursor:pointer}.topic-card:hover{transform:translateY(-10px);box-shadow:0 8px 20px #00000026}.topic-card h2{color:var(--secondary-color);margin-bottom:.8rem;font-size:1.4rem}.topic-card p{color:var(--text-secondary);font-size:1rem}.about{background-color:var(--card-background);max-width:900px;margin:3rem auto;padding:3rem;text-align:center;border-radius:15px;box-shadow:0 4px 20px #0000001a}.about h2{color:var(--primary-color);margin-bottom:1.5rem;font-size:2.2rem}.about p{color:var(--text-secondary);line-height:1.8}footer{background-color:var(--primary-color);color:#fff;text-align:center;padding:2rem;width:100%;margin-top:auto}footer a{color:var(--secondary-color);text-decoration:none;transition:color .3s ease}footer a:hover{color:var(--accent-color)}@media screen and (max-width: 1024px){.topics{grid-template-columns:repeat(2,1fr)}}@media screen and (max-width: 768px){.topics{grid-template-columns:1fr}.hero-section h1{font-size:2.2rem}.hero-section p{font-size:1rem}}body{font-family:Montserrat,sans-serif;background-color:var(--background-color);color:var(--text-color);line-height:1.6;cursor:default}body *{cursor:pointer;transition:all .3s ease}.navbar{position:fixed;top:0;left:0;width:100%;background-color:#ffffffe6;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);z-index:1000;box-shadow:0 4px 20px #0000000d;transform:translateY(0);transition:transform .5s,box-shadow .5s}.navbar:hover{box-shadow:0 6px 30px #0000001a;transform:scale(1.01)}.nav-links{display:flex;justify-content:center;align-items:center}.nav-links li{margin:0 1em;position:relative;overflow:hidden}.nav-links a{position:relative;text-decoration:none;color:var(--text-color);font-weight:600;padding:10px 15px;border-radius:25px;transition:all .4s ease}.nav-links a:before{content:"";position:absolute;bottom:0;left:0;width:100%;height:2px;background:var(--gradient-primary);transform:scaleX(0);transform-origin:right;transition:transform .4s ease}.nav-links a:hover{color:var(--primary-color);transform:translateY(-3px)}.nav-links a:hover:before{transform:scaleX(1);transform-origin:left}.hero-section{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--gradient-primary);position:relative;overflow:hidden}.hero-section:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background-image:linear-gradient(45deg,rgba(255,255,255,.1) 25%,transparent 25%),linear-gradient(-45deg,rgba(255,255,255,.1) 25%,transparent 25%);background-size:50px 50px;animation:moveBg 20s linear infinite}@keyframes moveBg{0%{background-position:0 0}to{background-position:100px 100px}}.overlay{text-align:center;background:#fff3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:3em;border-radius:var(--border-radius);box-shadow:0 15px 35px #0000001a;transform:perspective(1000px) rotateX(10deg);transition:all .6s ease}.overlay:hover{transform:perspective(1000px) rotateX(0);box-shadow:0 20px 45px #00000026}.topics{display:grid;grid-template-columns:repeat(s,1fr);gap:2em;padding:4em 2em;background-color:var(--background-color)}.topic-card{background:var(--card-background);border-radius:var(--border-radius);padding:2em;text-align:center;box-shadow:0 10px 30px #00000014;position:relative;overflow:hidden;transition:all .5s ease}.topic-card:after{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle closest-side,rgba(72,219,251,.1),transparent 70%);opacity:0;transition:opacity .5s ease}.topic-card:hover:after{opacity:1}.topic-card:hover{transform:translateY(-15px) scale(1.05);box-shadow:0 15px 40px #0000001f}.topic-card h2{position:relative;display:inline-block}.topic-card h2:after{content:"";position:absolute;bottom:-10px;left:0;width:0;height:3px;background:var(--gradient-primary);transition:width .4s ease}.topic-card:hover h2:after{width:100%}.about{background-color:var(--card-background);padding:4em 2em;text-align:center;position:relative;overflow:hidden}.about h2{position:relative;display:inline-block;margin-bottom:1em}.about h2:before{content:"";position:absolute;bottom:-10px;left:0;width:100%;height:3px;background:var(--gradient-primary);transform:scaleX(0);transform-origin:right;transition:transform .5s ease}.about:hover h2:before{transform:scaleX(1);transform-origin:left}@media (max-width: 1024px){.topics{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.topics{grid-template-columns:1fr}}body:before{content:"";position:fixed;top:0;left:0;width:0;height:4px;background:var(--gradient-primary);z-index:9999;transition:width .2s ease}body.scroll-progress:before{width:calc(var(--scroll-progress, 0) * 100%)}html{scroll-behavior:smooth}body{font-family:Montserrat,sans-serif;background:linear-gradient(135deg,#f9f9f9,#e0e7ff);color:#333;margin:0;padding:100px 0 0;overflow-x:hidden;animation:gradientShift 5s infinite alternate}@keyframes gradientShift{0%{background:linear-gradient(135deg,#f9f9f9,#e0e7ff)}to{background:linear-gradient(135deg,#e0e7ff,#f9f9f9)}}h1{text-align:center;font-size:2.5rem;color:#333;margin-bottom:20px;animation:fadeInDown 1.5s ease}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}.calculator{background-color:#fff;border:1px solid #ddd;border-radius:12px;padding:20px;margin:20px auto;width:90%;max-width:900px;box-shadow:0 4px 15px #0003;text-align:center;transition:transform .3s,box-shadow .3s;position:relative;overflow:hidden}.calculator:hover{transform:scale(1.03);box-shadow:0 8px 20px #0000004d}.calculator:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(30,64,175,.1),transparent);transform:rotate(45deg);animation:spinBg 10s linear infinite;z-index:-1}@keyframes spinBg{0%{transform:rotate(45deg)}to{transform:rotate(405deg)}}.calculator h2{font-size:1.8rem;color:#444;margin-bottom:10px;animation:popUp .8s ease}@keyframes popUp{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.calculator p{color:#555;margin:10px 0;animation:fadeIn 1.2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.calculator label{display:block;font-weight:700;margin-top:10px}.calculator input[type=number]{width:80%;padding:10px;margin-top:5px;border:2px solid #ddd;border-radius:6px;font-size:1rem;box-shadow:inset 0 2px 4px #0000001a;transition:all .3s}.calculator input[type=number]:focus{box-shadow:0 0 10px #1e40af80;border-color:#1e40af}.calculator button{width:80%;padding:12px;margin-top:15px;background:linear-gradient(90deg,#1e40af,#007bff);color:#fff;border:none;border-radius:6px;font-size:1rem;cursor:pointer;transition:background-color .3s,transform .3s}.calculator button:hover{background:linear-gradient(90deg,#007bff,#218838);transform:scale(1.05)}.calculator .result{font-weight:700;color:#007bff;margin-top:15px;font-size:1.2rem;opacity:0;animation:fadeInResult .6s forwards}@keyframes fadeInResult{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.waveform-container{display:flex;align-items:center}.y-axis-labels{display:flex;flex-direction:column;justify-content:space-between;height:200px;margin-right:10px}.label-positive,.label-zero,.label-negative{text-align:center;font-weight:700}.input-container{margin-bottom:10px}canvas{border:1px solid #ccc;background-color:#f4f4f4}body{font-family:Poppins,sans-serif;line-height:1.6;color:#333;padding-top:80px;background-color:#f9f9f9}.container{width:90%;max-width:1200px;margin:0 auto}.content-section{padding:20px;background-color:#fff;box-shadow:0 4px 8px #0000001a;border-radius:8px;margin-top:20px;margin-bottom:20px}.section-title{font-size:30px;font-weight:700;color:#007bff;margin-bottom:20px}.sub-section{background-color:#e6e6e6;padding:15px;margin:20px 0;border-left:5px solid #007bff;border-radius:5px;box-shadow:0 2px 4px #0000001a}.sub-section h4{color:#007bff;font-size:22px;margin-bottom:10px}.description{font-size:16px;color:#444;margin-bottom:15px;line-height:1.6}.description strong{font-weight:700;color:#333}ul{padding-left:20px;list-style-type:disc}ul li{font-size:16px;color:#444;margin-bottom:8px}.application{font-size:16px;color:#444;margin-bottom:20px;padding-left:20px}input[type=number]{padding:10px 15px;border:2px solid #007bff;border-radius:6px;width:250px;font-size:16px;color:#333;background-color:#f9f9f9;transition:border-color .3s ease,box-shadow .3s ease;margin-right:10px}input[type=number]:focus{border-color:#0056b3;box-shadow:0 0 8px #007bff80;outline:none}button{padding:10px 20px;border:none;background-color:#007bff;color:#fff;font-size:16px;font-weight:700;border-radius:6px;cursor:pointer;transition:background-color .3s ease,transform .2s ease}button:hover{background-color:#0056b3;transform:scale(1.05)}canvas{border:1px solid #cacaca;margin-top:10px;border-radius:5px;width:100%;max-width:600px;height:300px}.waveform-container{display:flex;align-items:center;margin-top:20px}.vertical-labels{display:flex;flex-direction:column;justify-content:space-between;height:200px;margin-right:10px;font-family:Arial,sans-serif;font-size:14px;color:#000;text-align:right}.label{padding-right:5px}canvas{border:1px solid #ccc}.description-section{background-color:#fff;padding:20px;margin:20px 0;box-shadow:0 4px 8px #0000001a;border-radius:8px}.description-section p{font-size:16px;color:#444;line-height:1.6;margin-bottom:15px}.description-section strong{font-weight:700;color:#007bff}.description-section ul{list-style-type:disc;padding-left:20px;margin-top:10px}.description-section li{font-size:16px;color:#444;margin-bottom:10px}.description-section ul li:before{content:"• ";color:#007bff}.description-section ul li:last-child{margin-bottom:0}:root{--primary-color: #2c3e50;--secondary-color: #3498db;--accent-color: #1abc9c;--background-color: #f4f4f4;--text-color: #333;--hover-color: #2980b9;--transition-duration: .3s;--border-radius: 8px}*{margin:0;padding:0;box-sizing:border-box;font-family:Poppins,sans-serif}body{background-color:var(--background-color);color:var(--text-color);line-height:1.6}.container{width:90%;max-width:1200px;margin:0 auto;padding:40px 20px}.section-title{text-align:center;color:var(--primary-color);margin-top:50px;position:relative;padding-bottom:10px}.section-title:after{content:"";position:absolute;bottom:0;left:50%;transform:translate(-50%);width:100px;height:3px;background-color:var(--accent-color)}.description-section,.sub-section{background-color:#fff;border-radius:var(--border-radius);padding:25px;margin-bottom:30px;box-shadow:0 4px 6px #0000001a;transition:transform var(--transition-duration) ease,box-shadow var(--transition-duration) ease}.description-section:hover,.sub-section:hover{transform:translateY(-5px);box-shadow:0 8px 12px #00000026}input[type=text]{width:100%;padding:12px 15px;margin:10px 0;border:2px solid var(--secondary-color);border-radius:var(--border-radius);background-color:#f9f9f9;transition:border-color var(--transition-duration) ease,box-shadow var(--transition-duration) ease}input[type=text]:focus{outline:none;border-color:var(--hover-color);box-shadow:0 0 0 3px #3498db4d}button{background-color:var(--secondary-color);color:#fff;border:none;padding:12px 24px;border-radius:var(--border-radius);cursor:pointer;transition:background-color var(--transition-duration) ease,transform var(--transition-duration) ease}button:hover{background-color:var(--hover-color);transform:translateY(-2px)}button:active{transform:translateY(0)}.waveform-container{display:flex;align-items:center;margin-top:20px;background-color:#f9f9f9;border-radius:var(--border-radius);padding:15px}.vertical-labels{display:flex;flex-direction:column;justify-content:space-between;height:200px;margin-right:15px;color:var(--primary-color);font-weight:500}canvas{border:1px solid var(--secondary-color);border-radius:var(--border-radius)}:root{--primary-color: #4a90e2;--secondary-color: #48dbfb;--accent-color: #ff6b6b;--background-color: #f5f5f5;--text-color: #2f3542;--card-background: #ffffff;--gradient-primary: linear-gradient(135deg, #4a90e2, #48dbfb);--transition-speed: .4s;--border-radius: 15px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Montserrat,sans-serif;background-color:var(--background-color);color:var(--text-color);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;padding:0}.container{margin:90px auto 2rem;background-color:var(--card-background);border-radius:var(--border-radius);box-shadow:0 10px 30px #00000014;width:100%;max-width:900px;padding:2rem;flex:1}h1{text-align:center;color:var(--primary-color);margin-bottom:2rem;font-size:2.5rem}.input-section{display:flex;flex-direction:column;gap:1rem;margin-bottom:2rem}label{color:var(--text-color);margin-bottom:.5rem}select,input{width:100%;padding:.75rem;border:2px solid var(--secondary-color);border-radius:10px;background-color:#fff;transition:all var(--transition-speed) ease}select:focus,input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 10px #4a90e233}#calculate-btn{background:var(--gradient-primary);color:#fff;border:none;padding:1rem;border-radius:10px;cursor:pointer;transition:transform var(--transition-speed) ease}#calculate-btn:hover{transform:translateY(-5px);box-shadow:0 5px 15px #4a90e24d}.results-section{background-color:var(--background-color);border-radius:var(--border-radius);padding:1.5rem;margin-top:1rem}.tier-breakdown{background:var(--card-background);border-radius:var(--border-radius);padding:1rem;margin-bottom:1rem;display:flex;align-items:center;box-shadow:0 4px 15px #0000001a;transition:transform var(--transition-speed) ease}.tier-breakdown:hover{transform:translateY(-5px)}.tier-icon{background:var(--secondary-color);color:#fff;width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-right:1rem;font-weight:700}#explanation-section{background-color:var(--card-background);border-radius:var(--border-radius);padding:1.5rem;margin-top:1rem;box-shadow:0 4px 15px #0000001a}.container{max-width:1200px;margin:0 auto;background:#fff;padding:2rem;border-radius:10px;box-shadow:0 4px 6px #0000001a;margin-top:5rem;margin-bottom:3rem}h1{color:#4285f4;margin-bottom:2rem;text-align:center}.input-section{margin-bottom:2rem;padding:1rem;background:#f8f9fa;border-radius:8px}.input-group{margin-bottom:1rem}.input-group label{display:block;margin-bottom:.5rem;color:#333;font-weight:700}.input-group input[type=text],.input-group input[type=number],.input-group input[type=range]{width:100%;padding:.5rem;border:1px solid #ddd;border-radius:4px;margin-bottom:.5rem}.control-panel{display:flex;gap:1rem;margin:1rem 0;flex-wrap:wrap}.control-panel button{background:#00bcd4;color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer;transition:background .3s ease}.control-panel button:hover{background:#008ba3}.control-panel button:disabled{background:#ccc;cursor:not-allowed}.signal-container{margin:1rem 0;padding:1rem;background:#f8f9fa;border-radius:4px;position:relative}.signal-label{font-weight:700;margin-bottom:.5rem;color:#333;display:flex;justify-content:space-between;align-items:center}.animation-status{font-size:.8em;color:#666}.signal-container canvas{border:1px solid #ddd;border-radius:4px;background:#fff;width:100%;height:120px}.error{color:#dc3545;font-size:.875rem;margin-top:.25rem}.info-text{color:#666;margin-bottom:1rem;line-height:1.6}.animation-controls{margin-top:1rem}.slider-container{display:flex;align-items:center;gap:1rem;margin-bottom:1rem}.slider-container label{min-width:120px;margin-bottom:0}.progress-indicator{position:absolute;top:0;left:0;height:100%;width:2px;background-color:#4285f480;pointer-events:none;transition:left .1s linear}