*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#f0f2f5;--card:#fff;--text:#1a1a2e;--text2:#666;--text3:#999;--border:#e4e6eb;--primary:#6c63ff;--primary-light:#6c63ff12;--primary-hover:#5a52d5;--shadow:0 1px 8px rgba(0,0,0,.06);--radius:10px;--sidebar:#fff;--active-bg:#6c63ff10;--active-border:#6c63ff;--code-bg:#f6f8fa;--input-bg:#fff;--hover-bg:#f5f5f5;--danger:#e74c3c;--success:#27ae60;--warning:#f39c12;--bg2:var(--code-bg);--error:var(--danger)}
[data-theme=dark]{--bg:#12121a;--card:#1e1e32;--text:#e0e0e0;--text2:#999;--text3:#666;--border:#2e2e4a;--primary:#7c73ff;--primary-light:#7c73ff18;--primary-hover:#6c63ff;--shadow:0 1px 8px rgba(0,0,0,.4);--sidebar:#18182a;--active-bg:#7c73ff18;--active-border:#7c73ff;--code-bg:#252540;--input-bg:#252540;--hover-bg:#252540;--bg2:var(--code-bg);--error:var(--danger)}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;transition:background .3s,color .3s}
body.tool-page{padding:20px;max-width:1000px;margin:0 auto}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1{font-size:22px;color:var(--primary);display:flex;align-items:center;gap:8px;margin-bottom:4px}
h2{font-size:20px;margin-bottom:2px;display:flex;align-items:center;gap:8px}
.tool-header{margin-bottom:16px}
.tool-header p{color:var(--text2);font-size:13px}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:16px;transition:background .3s}
.card-label{font-size:12px;font-weight:600;color:var(--text2);margin-bottom:6px;display:block;letter-spacing:.3px}
textarea,input[type=text],input[type=number],input[type=url],input[type=datetime-local],input[type=date],input[type=time],select{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:7px;font-size:13px;background:var(--input-bg);color:var(--text);outline:none;font-family:inherit;transition:border .2s,background .3s,color .3s}
textarea:focus,input:focus,select:focus{border-color:var(--primary)}
textarea{min-height:130px;resize:vertical;font-family:'Cascadia Code','Fira Code','Consolas',monospace;font-size:13px;line-height:1.5}
select{cursor:pointer}
.gr{display:grid;gap:12px}
.gr2{grid-template-columns:1fr 1fr}
.gr3{grid-template-columns:1fr 1fr 1fr}
.gr4{grid-template-columns:1fr 1fr 1fr 1fr}
@media(max-width:900px){.gr2,.gr3,.gr4{grid-template-columns:1fr}}
.btn{padding:7px 16px;border:none;border-radius:7px;cursor:pointer;font-size:13px;font-weight:500;transition:all .2s;display:inline-flex;align-items:center;gap:5px;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover)}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{padding:5px 10px;font-size:12px}
.btn-success{background:var(--success);color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-group{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.mt8{margin-top:8px}.mt12{margin-top:12px}.mb12{margin-bottom:12px}
.help-text{font-size:12px;color:var(--text3);line-height:1.7;padding:10px 14px;background:var(--code-bg);border-radius:7px;border:1px solid var(--border);transition:background .3s;margin-top:12px}
.help-text code{background:var(--card);padding:1px 5px;border-radius:3px;font-size:11px;color:var(--primary)}
.result-box{background:var(--code-bg);border-radius:7px;padding:12px;font-family:'Cascadia Code','Fira Code','Consolas',monospace;font-size:13px;word-break:break-all;min-height:36px;margin-top:8px;border:1px solid var(--border);transition:background .3s;line-height:1.6;max-height:400px;overflow:auto}
.result-box.small{min-height:auto;padding:8px 12px}
.result-box pre{margin:0;white-space:pre-wrap}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:10px}
.stat-item{text-align:center;padding:14px 8px;background:var(--code-bg);border-radius:7px;transition:background .3s}
.stat-item .num{font-size:24px;font-weight:700;color:var(--primary)}
.stat-item .label{font-size:11px;color:var(--text2);margin-top:3px}
.cb-group{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.cb-group label{display:flex;align-items:center;gap:5px;cursor:pointer;font-size:13px;padding:4px 10px;background:var(--code-bg);border-radius:6px;transition:background .2s}
.cb-group label:hover{background:var(--active-bg)}
.cb-group input[type=checkbox]{accent-color:var(--primary)}
.cb-group input[type=radio]{accent-color:var(--primary)}
.theme-toggle{position:fixed;top:14px;right:14px;z-index:100;width:36px;height:36px;border-radius:9px;border:1px solid var(--border);background:var(--card);color:var(--text);cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:background .3s,color .3s;box-shadow:var(--shadow)}
.theme-toggle:hover{background:var(--active-bg)}
.back-link{display:inline-flex;align-items:center;gap:4px;font-size:13px;margin-bottom:16px;color:var(--text2)}.back-link:hover{color:var(--primary)}
.pw-meter{height:4px;background:var(--border);border-radius:3px;margin-top:6px;overflow:hidden}
.pw-meter-bar{height:100%;border-radius:3px;transition:all .3s}
input[type=range]{padding:0;border:none;accent-color:var(--primary)}
input[type=color]{width:100%;height:44px;border:none;cursor:pointer;padding:0;background:none;border-radius:7px}
.color-preview{width:100%;height:70px;border-radius:7px;border:1px solid var(--border);margin-top:8px;transition:background .3s}
.ua-row{display:flex;padding:6px 0;border-bottom:1px solid var(--border);font-size:13px}
.ua-row:last-child{border:none}
.ua-label{width:100px;flex-shrink:0;color:var(--text2);font-weight:600}
.ua-value{flex:1;word-break:break-all}
.tag{display:inline-block;padding:2px 7px;border-radius:4px;font-size:11px;font-weight:600}
.tag-s{background:#d4edda;color:#155724}
.tag-d{background:#f8d7da;color:#721c24}
.tag-w{background:#fff3cd;color:#856404}
.tag-i{background:#d1ecf1;color:#0c5460}
@media(max-width:768px){body.tool-page{padding:12px}}