.app{flex-direction:column;min-height:100vh;display:flex}.main-content{flex:1;padding:2rem 1rem}.container{width:100%;max-width:1400px;margin:0 auto;padding:0 1rem}.tool-content{background-color:var(--bg-card);box-shadow:0 2px 8px var(--shadow);border:1px solid var(--border-color);border-radius:12px;padding:2rem}@media (width<=768px){.main-content{padding:1rem .5rem}.tool-content{padding:1.5rem}}.header{background-color:var(--bg-card);border-bottom:1px solid var(--border-color);box-shadow:0 2px 4px var(--shadow);z-index:100;position:sticky;top:0}.header-content{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;padding:1rem 1.5rem;display:flex}.logo{align-items:center;gap:.75rem;display:flex}.logo-icon{font-size:1.75rem}.logo h1{color:var(--text-primary);font-size:1.5rem;font-weight:700}.theme-toggle{border:2px solid var(--border-color);background:0 0;border-radius:8px;justify-content:center;align-items:center;padding:.5rem .75rem;font-size:1.25rem;transition:all .2s;display:flex}.theme-toggle:hover{background-color:var(--bg-secondary);border-color:var(--accent);transform:scale(1.05)}@media (width<=768px){.header-content{padding:1rem}.logo h1{font-size:1.25rem}.logo-icon{font-size:1.5rem}}.footer{background-color:var(--bg-card);border-top:1px solid var(--border-color);margin-top:3rem;padding:1.5rem 1rem}.footer-content{text-align:center;max-width:1400px;margin:0 auto}.footer-content p{color:var(--text-secondary);margin:0;font-size:.95rem}.footer-signature{color:var(--accent);font-weight:600}.heart{color:#ef4444;animation:1.5s ease-in-out infinite heartbeat;display:inline-block}@keyframes heartbeat{0%,to{transform:scale(1)}10%,30%{transform:scale(1.1)}20%,40%{transform:scale(1)}}@media (width<=768px){.footer{padding:1rem .5rem}.footer-content p{font-size:.875rem}}.tool-selector{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin-bottom:2rem;display:grid}.tool-card{background-color:var(--bg-card);border:2px solid var(--border-color);color:var(--text-primary);border-radius:12px;flex-direction:column;align-items:center;gap:.5rem;padding:1.25rem;transition:all .2s;display:flex}.tool-card:hover{border-color:var(--accent);box-shadow:0 4px 12px var(--shadow);transform:translateY(-2px)}.tool-card.active{background-color:var(--accent);border-color:var(--accent);color:#fff}.tool-icon{font-size:2rem}.tool-name{text-align:center;font-size:.95rem;font-weight:600}@media (width<=768px){.tool-selector{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.75rem}.tool-card{padding:1rem}.tool-icon{font-size:1.5rem}.tool-name{font-size:.85rem}}.tool-container{max-width:100%;margin:0 auto}.tool-container.narrow{max-width:800px}.tool-title{color:var(--text-primary);margin-bottom:.5rem;font-size:1.75rem}.tool-description{color:var(--text-secondary);margin-bottom:2rem;font-size:1rem}.input-group{margin-bottom:1.5rem}.input-group label{color:var(--text-primary);margin-bottom:.5rem;font-weight:600;display:block}.input-field{border:2px solid var(--border-color);background-color:var(--bg-secondary);width:100%;color:var(--text-primary);border-radius:8px;padding:.75rem;font-size:1rem;transition:all .2s}.input-field:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #4f46e51a}.textarea{resize:vertical;font-family:Courier New,monospace;line-height:1.5}.select{cursor:pointer}.btn{border:none;border-radius:8px;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--accent);color:#fff;margin-bottom:1.5rem}.btn-primary:hover{background-color:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px #4f46e54d}.btn-secondary{background-color:var(--bg-secondary);color:var(--text-primary);border:2px solid var(--border-color)}.btn-secondary:hover{border-color:var(--accent);color:var(--accent)}.btn-secondary.copied{background-color:var(--success);color:#fff;border-color:var(--success)}.output-section{margin-top:1.5rem}.output-section label{color:var(--text-primary);margin-bottom:.5rem;font-weight:600;display:block}.output-box{background-color:var(--bg-secondary);border:2px solid var(--border-color);word-wrap:break-word;color:var(--text-primary);border-radius:8px;padding:1rem;font-family:Courier New,monospace}.output-box.large-text{text-align:center;padding:1.5rem;font-size:1.5rem;font-weight:600}.output-box.error{border-color:var(--danger);color:var(--danger);background-color:#ef44441a}.output-with-copy{align-items:flex-start;gap:.75rem;display:flex}.output-with-copy .output-box{flex:1}.empty-state{text-align:center;color:var(--text-secondary);padding:2rem;font-style:italic}.table-wrapper{border:2px solid var(--border-color);border-radius:8px;overflow-x:auto}.json-table{border-collapse:collapse;background-color:var(--bg-secondary);width:100%}.json-table th,.json-table td{text-align:left;border-bottom:1px solid var(--border-color);padding:.75rem}.json-table th{background-color:var(--accent);color:#fff;font-weight:600;position:sticky;top:0}.json-table tr:last-child td{border-bottom:none}.json-table tr:hover{background-color:#4f46e50d}.json-preview{background-color:var(--bg-secondary);border:2px solid var(--border-color);border-radius:8px;padding:1rem;overflow-x:auto}.json-preview pre{color:var(--text-primary);margin:0;font-family:Courier New,monospace}.strength-indicator{margin-bottom:1.5rem}.strength-label{justify-content:space-between;margin-bottom:.5rem;font-size:1.1rem;display:flex}.progress-bar{background-color:var(--bg-secondary);border:2px solid var(--border-color);border-radius:6px;height:12px;overflow:hidden}.progress-fill{height:100%;transition:width .3s,background-color .3s}.checks-list,.suggestions{margin-top:1.5rem}.checks-list h3,.suggestions h3{color:var(--text-primary);margin-bottom:.75rem;font-size:1.1rem}.checks-list ul,.suggestions ul{padding:0;list-style:none}.checks-list li,.suggestions li{border-bottom:1px solid var(--border-color);padding:.5rem 0}.checks-list li:last-child,.suggestions li:last-child{border-bottom:none}.check-pass{color:var(--success)}.check-fail{color:var(--text-secondary)}.two-column-input{grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1.5rem;display:grid}.diff-output{background-color:var(--bg-secondary);border:2px solid var(--border-color);white-space:pre-wrap;word-wrap:break-word;border-radius:8px;padding:1rem;font-family:Courier New,monospace;line-height:1.6}.diff-legend{background-color:var(--bg-secondary);border-radius:8px;gap:1.5rem;margin-bottom:1rem;padding:.75rem;font-size:.9rem;display:flex}.diff-equal{color:var(--text-primary)}.diff-delete{color:var(--danger);background-color:#ef44444d;border-radius:4px;padding:2px 4px;font-weight:600;text-decoration:line-through}.diff-insert{color:var(--success);background-color:#10b9814d;border-radius:4px;padding:2px 4px;font-weight:600}.diff-display-box{border:2px solid var(--border-color);background-color:var(--bg-secondary);width:100%;min-height:300px;color:var(--text-primary);white-space:pre-wrap;word-wrap:break-word;border-radius:8px;padding:.75rem;font-family:Courier New,monospace;font-size:1rem;line-height:1.5;overflow-y:auto}.diff-highlighted-text{line-height:1.6}@media (width<=768px){.tool-title{font-size:1.5rem}.two-column-input{grid-template-columns:1fr}.output-with-copy{flex-direction:column}.btn{justify-content:center;width:100%}.diff-legend{flex-direction:column;gap:.5rem}}*{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary:#fff;--bg-secondary:#f8fafc;--bg-card:#fff;--text-primary:#0f172a;--text-secondary:#64748b;--border-color:#e2e8f0;--accent:#4f46e5;--accent-hover:#4338ca;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;--shadow:#0000001a}body.dark-mode{--bg-primary:#0f172a;--bg-secondary:#1e293b;--bg-card:#1e293b;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--border-color:#334155;--shadow:#0000004d}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg-primary);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;line-height:1.6;transition:background-color .3s,color .3s}code{font-family:Courier New,monospace}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit}