:root{--primary-color: #2c3e50;--secondary-color: #3498db;--accent-color: #4CAF50;--background-light: #f5f5f5;--background-dark: #1a1a1a;--text-light: #333;--text-dark: #fff;--card-light: #ffffff;--card-dark: #2d2d2d;--transition-speed: .3s}[data-theme=dark]{--primary-color: #64ffda;--secondary-color: #7f5af0;--background-light: var(--background-dark);--text-light: var(--text-dark);--card-light: var(--card-dark)}*{margin:0;padding:0;box-sizing:border-box;transition:background-color var(--transition-speed),color var(--transition-speed)}body{font-family:Inter,sans-serif;background-color:var(--background-light);color:var(--text-light);line-height:1.6;overflow-x:hidden}.theme-toggle{position:fixed;top:20px;right:20px;z-index:1000;background:none;border:none;cursor:pointer;font-size:1.5rem;color:var(--text-light);padding:10px;border-radius:50%;backdrop-filter:blur(10px);background:#ffffff1a;box-shadow:0 4px 6px #0000001a}.container{max-width:1200px;margin:0 auto;padding:2rem;position:relative}.header{text-align:center;padding:3rem 0;background:linear-gradient(135deg,#2c3e501a,#3498db1a);border-radius:20px;margin-bottom:3rem}h1{font-size:3.5rem;font-weight:700;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:1.5rem}.intro{font-size:1.2rem;max-width:800px;margin:0 auto 1.5rem;color:var(--text-light);opacity:.9}.contact-info{font-size:1.1rem;margin-bottom:2rem}.contact-info a{color:var(--secondary-color);text-decoration:none;position:relative}.contact-info a:after{content:"";position:absolute;width:100%;height:2px;bottom:-2px;left:0;background-color:var(--secondary-color);transform:scaleX(0);transition:transform .3s ease}.contact-info a:hover:after{transform:scaleX(1)}.filter-buttons{display:flex;flex-direction:column;gap:1rem;margin-bottom:3rem}.filter-buttons-row{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap}.filter-buttons button{color:#fff;border:none;padding:.8rem 1.5rem;border-radius:12px;cursor:pointer;font-size:.9rem;font-weight:500;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.filter-buttons button:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;background:#fff3;border-radius:50%;transform:translate(-50%,-50%);transition:width .6s,height .6s}.filter-buttons button:hover:before{width:300px;height:300px}.filter-buttons button.active{transform:translateY(-2px);box-shadow:0 10px 20px #0003}.certification-section{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem;padding:1rem}.certification{background:var(--card-light);border-radius:20px;box-shadow:0 10px 30px #0000001a;padding:2rem;transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.certification:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,#3498db1a,#2c3e501a);opacity:0;transition:opacity .3s ease}.certification:hover{transform:translateY(-10px) scale(1.02);box-shadow:0 20px 40px #00000026}.certification:hover:before{opacity:1}.certification img{width:120px;height:120px;object-fit:contain;border-radius:15px;margin-bottom:1.5rem;transition:transform .3s ease}.certification:hover img{transform:scale(1.1)}.certification h3{font-size:1.5rem;font-weight:600;margin-bottom:1rem;color:var(--text-light)}.certification p{color:var(--text-light);opacity:.8;margin-bottom:1rem}.certification a{display:inline-block;padding:.8rem 1.5rem;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;text-decoration:none;border-radius:10px;font-weight:500;transition:all .3s ease;position:relative;overflow:hidden}.certification a:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .7s ease}.certification a:hover:before{left:100%}.section-title{font-size:2.5rem;text-align:center;margin:4rem 0 2rem;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;position:relative;padding-bottom:1rem}.section-title:after{content:"";position:absolute;bottom:0;left:50%;transform:translate(-50%);width:100px;height:3px;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));border-radius:3px}.certification-section{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:2.5rem;padding:2rem;max-width:1400px;margin:0 auto}.certification{background:var(--card-light);border-radius:20px;box-shadow:0 10px 30px #0000001a;padding:2rem;transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;display:flex;flex-direction:column;height:100%;border:1px solid rgba(255,255,255,.1)}.certification:hover{transform:translateY(-10px);box-shadow:0 20px 40px #00000026;border-color:var(--secondary-color)}.certification-header{display:flex;align-items:center;margin-bottom:1.5rem;gap:1.5rem}.certification img{width:80px;height:80px;object-fit:contain;border-radius:12px;transition:transform .3s ease;background:#fff;padding:.5rem;box-shadow:0 4px 8px #0000001a}.certification-info{flex:1}.certification h3{font-size:1.3rem;font-weight:600;margin-bottom:.5rem;color:var(--text-light);line-height:1.4}.certification-meta{font-size:.9rem;color:var(--text-light);opacity:.8;margin-bottom:.5rem}.certification p{color:var(--text-light);opacity:.8;margin-bottom:1.5rem;flex-grow:1}.certification a{display:inline-block;padding:.8rem 1.5rem;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;text-decoration:none;border-radius:10px;font-weight:500;transition:all .3s ease;text-align:center;position:relative;overflow:hidden}.certification a:hover{transform:translateY(-2px);box-shadow:0 5px 15px rgba(var(--secondary-color-rgb),.3)}.filter-buttons{position:sticky;top:20px;z-index:100;background:var(--background-light);padding:1rem;border-radius:15px;box-shadow:0 5px 20px #0000001a;backdrop-filter:blur(10px);margin:2rem auto;max-width:800px}.filter-buttons-row{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.filter-buttons button{color:var(--text-light);background:var(--card-light);border:2px solid transparent;padding:.8rem 1.5rem;border-radius:12px;cursor:pointer;font-size:.9rem;font-weight:500;transition:all .3s ease;position:relative;overflow:hidden}.filter-buttons button:hover{border-color:var(--secondary-color);transform:translateY(-2px)}.filter-buttons button.active{background:var(--secondary-color);color:#fff;border-color:var(--secondary-color);transform:translateY(-2px);box-shadow:0 5px 15px rgba(var(--secondary-color-rgb),.3)}@media(max-width:768px){.container{padding:1rem}h1{font-size:2.5rem}.certification-section{grid-template-columns:1fr;gap:1.5rem;padding:1rem}.filter-buttons{margin:1rem;position:relative;top:0}.filter-buttons button{width:calc(50% - .5rem);padding:.6rem 1rem}.certification-header{flex-direction:column;text-align:center}.certification-info{text-align:center}}