.form-container{max-width:1200px}.tool-container{max-width:1200px;margin:2rem auto;padding:0 1rem}.tool-header{text-align:center;margin-bottom:2rem}.tool-title{font-size:2.5rem;font-weight:700;color:#1f2937;margin-bottom:1rem;background:linear-gradient(135deg,#38bdf8,#3b82f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.tool-description{font-size:1.1rem;color:#6b7280;line-height:1.6;max-width:700px;margin:0 auto}.crypto-layout{display:grid;grid-template-columns:1fr 1fr;gap:3rem;margin-bottom:2rem}.encrypt-section,.decrypt-section{background:linear-gradient(135deg,#fffc,#f8fafce6);border:1px solid rgba(255,255,255,.3);border-radius:16px;padding:2rem;backdrop-filter:blur(15px);box-shadow:0 8px 32px #0000001a}.section-title{font-size:1.5rem;font-weight:600;color:#374151;margin-bottom:1.5rem;text-align:center;padding-bottom:.5rem;border-bottom:2px solid rgba(56,189,248,.2);background:linear-gradient(135deg,#64748b,#475569);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.form-group{margin-bottom:1.5rem}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.form-label{display:block;font-weight:600;color:#374151;margin-bottom:.5rem;font-size:.9rem;background:linear-gradient(135deg,#64748b,#475569);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.form-textarea{width:100%;padding:1rem;border:2px solid rgba(226,232,240,.8);border-radius:8px;font-size:.9rem;color:#1f2937;background:#ffffffe6;transition:all .3s ease;box-sizing:border-box;resize:vertical;min-height:100px;line-height:1.5}.form-textarea:hover{border-color:#38bdf899;background:#fff;color:#111827;box-shadow:0 4px 12px #38bdf826,0 0 0 1px #38bdf81a;transform:translateY(-1px)}.form-textarea:focus{outline:none;border-color:#38bdf8;background:#fff;color:#0f172a;box-shadow:0 0 0 4px #38bdf833,0 8px 25px #38bdf826,inset 0 1px 2px #0000000d;transform:translateY(-2px)}.form-textarea::placeholder{color:#9ca3af;opacity:1;transition:all .3s ease}.form-textarea:focus::placeholder{color:#d1d5db;transform:translateY(-2px)}.result-textarea{background:#f8fafce6;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:.85rem;font-weight:500;color:#374151;word-break:break-all;border-color:#cbd5e1cc}.result-textarea:hover{background:#f1f5f9;color:#1f2937;border-color:#38bdf866;font-weight:600}.result-textarea:focus{background:#f1f5f9;color:#0f172a;font-weight:600}.key-input-container{position:relative}.form-input{width:100%;padding:.75rem 2.5rem .75rem 1rem;border:2px solid rgba(226,232,240,.8);border-radius:8px;font-size:.9rem;color:#1f2937;background:#ffffffe6;transition:all .3s ease;box-sizing:border-box;font-weight:500}.form-input:hover{border-color:#38bdf899;background:#fff;color:#111827;box-shadow:0 4px 12px #38bdf826,0 0 0 1px #38bdf81a;transform:translateY(-1px);font-weight:600}.form-input:focus{outline:none;border-color:#38bdf8;background:#fff;color:#0f172a;box-shadow:0 0 0 4px #38bdf833,0 8px 25px #38bdf826,inset 0 1px 2px #0000000d;transform:translateY(-2px);font-weight:600}.form-input::placeholder{color:#9ca3af;opacity:1;transition:all .3s ease}.form-input:focus::placeholder{color:#d1d5db}.clear-btn{position:absolute;right:.5rem;top:50%;transform:translateY(-50%);width:1.5rem;height:1.5rem;border:none;background:#6b728033;color:#6b7280;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;line-height:1;transition:all .2s ease}.clear-btn:hover{background:#ef444433;color:#ef4444;transform:translateY(-50%) scale(1.1)}.form-select{width:100%;padding:.75rem 1rem;border:2px solid rgba(226,232,240,.8);border-radius:8px;font-size:.9rem;color:#1f2937;background:#ffffffe6;transition:all .3s ease;box-sizing:border-box;cursor:pointer;font-weight:500}.form-select:hover{border-color:#38bdf899;background:#fff;color:#111827;box-shadow:0 4px 12px #38bdf826,0 0 0 1px #38bdf81a;transform:translateY(-1px);font-weight:600}.form-select:focus{outline:none;border-color:#38bdf8;background:#fff;color:#0f172a;box-shadow:0 0 0 4px #38bdf833,0 8px 25px #38bdf826;transform:translateY(-2px);font-weight:600}.form-input::selection,.form-textarea::selection{background:#38bdf84d;color:#0f172a}.result-textarea.error{border-color:#ef4444;background:#fef2f2e6;color:#dc2626;font-weight:600}.result-textarea.error:hover,.result-textarea.error:focus{background:#fef2f2;color:#b91c1c;border-color:#dc2626}.button-group{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-top:2rem;padding:1.5rem;background:#ffffff80;border-radius:12px;backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.3)}.form-button{padding:.875rem 1.5rem;border-radius:8px;font-weight:600;font-size:.9rem;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);border:none;min-width:120px;position:relative;overflow:hidden}.form-button: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 .5s}.form-button:hover:before{left:100%}.form-button:not(.secondary){background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;box-shadow:0 4px 14px #3b82f64d}.form-button:not(.secondary):hover{background:linear-gradient(135deg,#2563eb,#1d4ed8);transform:translateY(-2px);box-shadow:0 8px 30px #3b82f666}.form-button.secondary{background:#ffffffb3;border:2px solid rgba(255,255,255,.3);color:#374151}.form-button.secondary:hover{background:#38bdf81a;border-color:#38bdf880;color:#0ea5e9;transform:translateY(-2px)}.form-button:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.form-button:disabled:before{display:none}@media (max-width: 768px){.crypto-layout{grid-template-columns:1fr;gap:2rem}.form-row{grid-template-columns:1fr;gap:1rem}.tool-title{font-size:2rem}.button-group{flex-direction:column;align-items:center}.form-button{width:100%;max-width:200px}}