:root,body.dark-theme{--bg-body:#191724;--bg-card:#1f1d2e;--bg-input:#26233a;--bg-highlight:#21202e;--text-main:#e0def4;--text-muted:#908caa;--primary:#ebbcba;--secondary:#ebbcba;--accent:#31748f;--error:#eb6f92;--border:#524f67;--focus-ring:rgba(235,188,186,.3)}body.light-theme{--bg-body:#faf4ed;--bg-card:#fffaf3;--bg-input:#f2e9e1;--bg-highlight:#f4ede8;--text-main:#575279;--text-muted:#797593;--primary:#d7827e;--secondary:#d7827e;--accent:#286983;--error:#b4637a;--border:#cecacd;--focus-ring:rgba(215,130,126,.3)}html,body{height:100%;margin:0;padding:0}body{background:var(--bg-body);color:var(--text-main);margin:0;font-family:Inter,Segoe UI,sans-serif;transition:background .3s,color .3s}.app-containter{flex-direction:column;max-width:800px;min-height:100vh;margin:0 auto;display:flex}.main-nav{background:var(--bg-card);border-bottom:2px solid var(--border);justify-content:space-between;align-items:center;padding:1rem 2rem;transition:background .3s,border-color .3s;display:flex}.main-nav ul{gap:20px;margin:0;padding:0;list-style:none;display:flex}.main-nav a{color:var(--text-muted);font-weight:600;text-decoration:none;transition:color .2s}.main-nav a:hover,.main-nav a[aria-current=page]{color:var(--primary)}main{box-sizing:border-box;flex:1;width:100%;padding:2rem}.theme-toggle{border:1px solid var(--border);color:var(--text-main);cursor:pointer;background:0 0;border-radius:6px;padding:5px 10px;font-size:.9em;transition:all .2s}.theme-toggle:hover{border-color:var(--primary);color:var(--primary)}.app-footer{border-top:2px solid var(--border);background:var(--bg-card);text-align:center;color:var(--text-muted);margin-top:auto;padding:2rem 0;font-size:.9rem;transition:background .3s,border-color .3s,color .3s}.footer-content{padding:0 1rem}.footer-content p{margin:0 0 1rem;line-height:1.5}.footer-content p strong{color:var(--primary)}.footer-links a{color:var(--secondary);border-bottom:1px dotted var(--secondary);font-weight:600;text-decoration:none;transition:all .2s}.footer-links a:hover{color:var(--primary);border-bottom-style:solid}.cipher-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:2rem;transition:background .3s,border-color .3s,box-shadow .3s;box-shadow:0 4px 20px rgba(0,0,0,.2)}.card-header{border-bottom:1px solid var(--border);margin-bottom:1.5rem;padding-bottom:1rem}.card-header h2{padding:none;color:var(--secondary);border:none;margin:0;font-size:1.5rem}.controls-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;min-height:46px;display:flex}.radio-group{background:var(--bg-input);box-sizing:border-box;border-radius:8px;justify-content:center;align-items:center;gap:20px;width:fit-content;height:46px;padding:0 16px;display:flex}.radio-group .radio-button label{cursor:pointer;color:var(--text-main);text-transform:none;align-items:center;gap:8px;height:100%;margin:0;display:flex}.radio-group .radio-button input[type=radio]{accent-color:var(--primary);margin:0}.format-controls-box{background:var(--bg-input);box-sizing:border-box;border-radius:8px;height:46px;padding:0 12px;font-size:.9rem;animation:.2s ease-in-out fadeIn;display:flex}.format-controls-box .format-controls{justify-content:center;align-items:center;gap:12px;display:flex}.format-controls-box .format-controls label{color:var(--text-muted);white-space:nowrap;margin:0;font-weight:400}.format-controls-box .format-controls select{border:1px solid var(--border);background:var(--bg-input);height:32px;color:var(--text-main);cursor:pointer;box-sizing:border-box;border-radius:6px;padding:0 12px;font-size:.9rem}.format-controls-box .format-controls select:focus{border-color:var(--primary);outline:none}@keyframes fadeIn{0%{opacity:0;transform:translate(5px)}to{opacity:1;transform:translate(0)}}.form-group{margin-bottom:1.5rem}.form-group label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05rem;margin-bottom:.5rem;font-size:.9rem;font-weight:600;display:block}.form-group textarea{background:var(--bg-input);width:100%;color:var(--text-main);border:1px solid var(--border);box-sizing:border-box;border-radius:6px;padding:12px;font-family:monospace;font-size:1rem}.form-group input[type=text]{background:var(--bg-input);width:100%;color:var(--text-main);border:1px solid var(--border);box-sizing:border-box;border-radius:6px;padding:12px;font-family:monospace;font-size:1rem}.form-group:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--focus-ring);outline:none}.form-group::placeholder{color:var(--text-muted);opacity:.5}.btn-primary{background:var(--primary);color:var(--bg-body);cursor:pointer;border:none;border-radius:6px;width:100%;padding:12px 24px;font-size:1rem;font-weight:700;transition:opacity .2s}.btn-primary:hover{opacity:.9}.error-box{color:var(--error);border:1px solid var(--error);background:rgba(235,111,146,.1);border-radius:6px;margin-top:1.5rem;padding:1rem}.error-toolbar{border-bottom:1px solid var(--border);background:rgba(0,0,0,.03);justify-content:space-between;align-items:center;padding:8px 12px;display:flex}.error-toolbar strong{color:var(--text-muted);background:0 0;padding:0}.result-box{background:var(--bg-highlight);border:1px solid var(--border);border-radius:8px;margin-top:1.5rem;overflow:hidden}.result-box code{word-break:break-all;color:var(--accent);background:0 0;padding:15px;font-family:Consolas,Monaco,monospace;display:block}.result-toolbar{border-bottom:1px solid var(--border);background:rgba(0,0,0,.05);justify-content:space-between;align-items:center;padding:8px 12px;display:flex}.result-toolbar strong{color:var(--text-muted);font-size:.85rem}.form-group textarea,.format-controls,.radio-group,.result-box,.result-toolbar,.format-controls select{transition:background .3s,border-color .3s,color .3s}.form-group input[type=text]{transition:background .3s,border-color .3s,color .3s}.btn-copy{color:var(--primary);cursor:pointer;text-transform:uppercase;letter-spacing:.05em;background:0 0;border:none;border-radius:4px;padding:4px 8px;font-size:.85rem;font-weight:700;transition:all .2s}.btn-copy:hover{background:rgba(0,0,0,.05)}.home-container{max-width:700px;margin:0 auto;padding:2rem 0}.hero-section{text-align:center;margin-bottom:3rem}.hero-section h1{color:var(--primary);margin:0 0 1rem;font-size:3rem;line-height:1.1}.hero-section .subtitle{color:var(--text-muted);max-width:500px;margin:0 auto;font-size:1.2rem;line-height:1.5}.info-grid{grid-template-columns:1fr;gap:20px;margin-bottom:3rem;display:grid}@media (width>=600px){.info-grid{grid-template-columns:1fr 1fr}}.info-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:2rem;transition:transform .2s,box-shadow .2s,background-color .3s,border-color .3s}.info-card:hover{border-color:var(--primary);transform:translateY(-5px);box-shadow:0 10px 25px rgba(0,0,0,.1)}.info-card h3{color:var(--secondary);border-bottom:1px solid var(--border);margin-top:0;margin-bottom:15px;padding-bottom:10px;font-size:1.1rem}.info-card p{color:var(--text-muted);margin:0;font-size:.95rem;line-height:1.6}.info-card strong{color:var(--accent)}.getting-started{text-align:center;border:1px dashed var(--border);color:var(--text-main);background:rgba(0,0,0,.03);border-radius:8px;padding:1.5rem;font-weight:500}.not-found-container{text-align:center;max-width:600px;margin:0 auto;padding:4rem 1rem;animation:.5s ease-out fadeIn}.not-found-container .error-code{color:var(--error);opacity:.8;text-shadow:4px 4px rgba(0,0,0,.1);margin-bottom:1rem;font-family:Consolar,Monaco,monospace;font-size:6rem;font-weight:800;line-height:1}.not-found-container h1{color:var(--text-main);margin-bottom:1rem;font-size:2rem}.not-found-container p{color:var(--text-muted);margin-bottom:2rem;font-size:1.1rem}.not-found-container .binary-decoration{color:var(--text-muted);opacity:.5;word-break:break-all;margin-bottom:2.5rem;font-family:Consolas,Monaco,monospace;font-size:.85rem}.btn-link{text-align:center;width:auto;text-decoration:none;display:inline-block}