:root{--bg-primary:#0f172a;--bg-secondary:#1e293b;--bg-card:#334155;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--accent:#10b981;--accent-hover:#059669;--border:#475569;}
[data-theme="dark"]{--bg-primary:#0f172a;--bg-secondary:#1e293b;}
*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;}
.container{max-width:900px;margin:0 auto;padding:20px;}
header{text-align:center;padding:40px 0;position:relative;}
h1{font-size:2.5rem;margin-bottom:10px;}
.tagline{color:var(--text-secondary);}
.dark-mode-btn{position:absolute;top:20px;right:20px;background:var(--bg-secondary);border:1px solid var(--border);padding:10px 15px;border-radius:8px;cursor:pointer;font-size:1.2rem;}
.tool-card{background:var(--bg-secondary);border-radius:16px;padding:30px;margin-bottom:30px;}
.controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px;margin-bottom:20px;}
.control-group label{display:block;margin-bottom:8px;font-weight:500;color:var(--text-secondary);}
.checkbox-group label{display:flex;align-items:center;gap:8px;cursor:pointer;}
.checkbox-group input{width:18px;height:18px;accent-color:var(--accent);}
select,input[type="number"]{width:100%;padding:12px;background:var(--bg-primary);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-size:14px;}
select:focus,input:focus{outline:none;border-color:var(--accent);}
.generate-btn{width:100%;padding:16px;background:var(--accent);border:none;border-radius:8px;color:white;font-size:16px;font-weight:600;cursor:pointer;transition:background 0.2s;}
.generate-btn:hover{background:var(--accent-hover);}
.output-section{margin-top:20px;}
.output-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;}
.output-header span{color:var(--text-secondary);font-size:14px;}
textarea{width:100%;padding:16px;background:var(--bg-primary);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-family:inherit;font-size:14px;resize:vertical;line-height:1.8;}
.copy-btn{padding:8px 16px;background:var(--bg-card);border:1px solid var(--border);border-radius:6px;color:var(--text-secondary);cursor:pointer;transition:all 0.2s;}
.copy-btn:hover{background:var(--accent);color:white;border-color:var(--accent);}
.trust-badges{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;margin:40px 0;}
.badge{display:flex;align-items:center;gap:8px;padding:10px 20px;background:var(--bg-secondary);border-radius:30px;font-size:14px;}
.faq-section{margin-top:40px;}
.faq-section h2{text-align:center;margin-bottom:30px;}
.faq-item{background:var(--bg-secondary);border-radius:10px;margin-bottom:10px;}
.faq-item summary{padding:16px 20px;cursor:pointer;font-weight:500;list-style:none;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:'+';float:right;}
.faq-item[open] summary::after{content:'−';}
.faq-item p{padding:0 20px 16px;color:var(--text-secondary);}
footer{text-align:center;padding:30px;color:var(--text-secondary);border-top:1px solid var(--border);margin-top:40px;}
@media(max-width:768px){h1{font-size:1.8rem;}.controls{grid-template-columns:1fr;}}