*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}:root{--primary: #4a6cf7;--primary-dark: #3a56d4;--secondary: #6c757d;--light: #f8f9fa;--dark: #212529;--border: #eaeaea;--success: #28a745;--error: #dc3545}body{background-color:#fff;color:var(--dark);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}header{background-color:#fff;box-shadow:0 2px 15px #00000014;position:sticky;top:0;z-index:100}nav{display:flex;justify-content:space-between;align-items:center;padding:20px 0}.logo{font-size:1.8rem;font-weight:700;color:var(--primary);text-decoration:none;display:flex;align-items:center;gap:8px}.logo span{color:var(--dark)}.nav-links{display:flex;list-style:none;gap:30px}.nav-links a{text-decoration:none;color:var(--dark);font-weight:500;font-size:1rem;padding:8px 0;position:relative;transition:color .3s}.nav-links a:hover,.nav-links a.active{color:var(--primary)}.nav-links a.active:after{content:"";position:absolute;bottom:0;left:0;width:100%;height:2px;background-color:var(--primary)}.hamburger{display:none;cursor:pointer;background:none;border:none;font-size:1.5rem;color:var(--dark)}main{flex:1;padding:40px 0}.page-header{text-align:center;margin-bottom:40px;padding-bottom:20px;border-bottom:1px solid var(--border)}.page-header h1{font-size:2.5rem;margin-bottom:10px;color:var(--dark)}.page-header p{color:var(--secondary);max-width:700px;margin:0 auto}.tool-container{background-color:#fff;border-radius:12px;box-shadow:0 5px 25px #00000014;padding:30px;margin-bottom:40px}.tool-header{margin-bottom:25px}.tool-header h2{font-size:1.8rem;color:var(--dark);margin-bottom:8px}.tool-header p{color:var(--secondary)}.input-group,.output-group{margin-bottom:25px}.input-group label,.output-group label{display:block;margin-bottom:10px;font-weight:600;color:var(--dark)}textarea{width:100%;padding:15px;border:1px solid var(--border);border-radius:8px;font-size:1rem;resize:vertical;min-height:120px;transition:border .3s,box-shadow .3s}textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4a6cf71a}.output-container{background-color:var(--light);border-radius:8px;padding:15px;min-height:120px;border:1px solid var(--border);word-break:break-all;white-space:pre-wrap}.controls{display:flex;gap:15px;flex-wrap:wrap;margin-top:10px}.btn{padding:12px 25px;background-color:var(--primary);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:background-color .3s,transform .2s;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn:hover{background-color:var(--primary-dark);transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn-secondary{background-color:var(--secondary)}.btn-secondary:hover{background-color:#5a6268}.btn-outline{background-color:transparent;border:1px solid var(--primary);color:var(--primary)}.btn-outline:hover{background-color:#4a6cf70d}.examples{margin-top:40px}.examples h3{font-size:1.5rem;margin-bottom:20px;color:var(--dark)}.content-card{background-color:#fff;border-radius:12px;box-shadow:0 5px 25px #00000014;padding:40px;margin-bottom:40px}.content-section{margin-bottom:30px}.content-section h2{font-size:1.8rem;color:var(--dark);margin-bottom:15px;padding-bottom:10px;border-bottom:1px solid var(--border)}.content-section p{margin-bottom:15px}.content-section ul{margin-left:20px;margin-bottom:15px}.content-section li{margin-bottom:8px}footer{background-color:var(--dark);color:#fff;padding:40px 0 20px;margin-top:auto}.footer-content{display:flex;flex-wrap:wrap;justify-content:space-between;gap:30px;margin-bottom:30px}.footer-section{flex:1;min-width:250px}.footer-section h3{font-size:1.3rem;margin-bottom:20px;color:#fff}.footer-section p{color:#aaa;margin-bottom:15px}.footer-links{list-style:none}.footer-links li{margin-bottom:10px}.footer-links a{color:#aaa;text-decoration:none;transition:color .3s}.footer-links a:hover{color:#fff}.copyright{text-align:center;padding-top:20px;border-top:1px solid #444;color:#aaa;font-size:.9rem}@media (max-width: 768px){.nav-links{position:fixed;top:70px;left:0;width:100%;background-color:#fff;flex-direction:column;align-items:center;padding:20px 0;box-shadow:0 5px 10px #0000001a;transform:translateY(-150%);transition:transform .3s;z-index:99}.nav-links.active{transform:translateY(0)}.hamburger{display:block}.page-header h1{font-size:2rem}.tool-container{padding:20px}.content-card{padding:25px}.controls{flex-direction:column}.btn{width:100%}}.hidden{display:none}.success-message{background-color:#28a7451a;color:var(--success);padding:12px;border-radius:8px;margin-top:15px;display:flex;align-items:center;gap:10px}.error-message{background-color:#dc35451a;color:var(--error);padding:12px;border-radius:8px;margin-top:15px;display:flex;align-items:center;gap:10px}.meta{margin-top:8px;color:#666;font-size:13px}.format-label{font-weight:600;margin-right:6px}.examples{margin-top:20px}