:root{
  --indigo:#4f46e5;
  --indigo-dark:#3730a3;
  --slate-900:#0f172a;
  --slate-800:#1e293b;
  --slate-700:#334155;
  --slate-500:#64748b;
  --slate-300:#cbd5e1;
  --slate-200:#e2e8f0;
  --slate-100:#f1f5f9;
  --slate-50:#f8fafc;
  --white:#ffffff;
  --danger:#dc2626;
  --success:#16a34a;
  --radius:10px;
  --shadow:0 1px 3px rgba(15,23,42,.08),0 1px 2px rgba(15,23,42,.06);
  --shadow-lg:0 10px 25px -5px rgba(15,23,42,.1),0 8px 10px -6px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Segoe UI",Inter,system-ui,-apple-system,Arial,sans-serif;
  background:var(--slate-50);
  color:var(--slate-800);
  line-height:1.6;
}
a{color:var(--indigo);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{background:var(--white);border-bottom:1px solid var(--slate-200);position:sticky;top:0;z-index:50}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--slate-900)}
.brand .logo-dot{width:12px;height:12px;background:var(--indigo);border-radius:4px;display:inline-block}
.main-nav{display:flex;align-items:center;gap:22px}
.main-nav a{color:var(--slate-700);font-weight:600;font-size:14.5px}
.main-nav a:hover{color:var(--indigo);text-decoration:none}

/* Header search */
.header-search{position:relative;width:270px}
.header-search input{
  width:100%;padding:9px 14px;border:1px solid var(--slate-300);border-radius:8px;font-size:14px;outline:none;
}
.header-search input:focus{border-color:var(--indigo);box-shadow:0 0 0 3px rgba(79,70,229,.12)}
.search-dropdown{
  position:absolute;top:calc(100% + 6px);left:0;right:0;background:var(--white);
  border:1px solid var(--slate-200);border-radius:10px;box-shadow:var(--shadow-lg);
  max-height:340px;overflow-y:auto;display:none;z-index:60;
}
.search-dropdown.active{display:block}
.search-dropdown a{
  display:flex;flex-direction:column;gap:2px;padding:10px 14px;color:var(--slate-800);border-bottom:1px solid var(--slate-100);
}
.search-dropdown a:last-child{border-bottom:none}
.search-dropdown a:hover{background:var(--slate-50);text-decoration:none}
.search-dropdown a small{color:var(--slate-500);font-weight:400}
.search-dropdown .no-results{padding:14px;color:var(--slate-500);font-size:14px}

/* Mobile nav toggle */
.nav-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--slate-800)}
@media (max-width:860px){
  .main-nav{position:fixed;top:66px;left:0;right:0;bottom:0;background:var(--white);flex-direction:column;
    align-items:stretch;padding:20px;gap:14px;transform:translateX(100%);transition:transform .25s ease;overflow-y:auto}
  .main-nav.open{transform:translateX(0)}
  .header-search{width:100%;order:-1;margin-bottom:6px}
  .nav-toggle{display:block}
}

/* Hero */
.hero{background:linear-gradient(135deg,var(--indigo) 0%,var(--indigo-dark) 100%);color:#fff;padding:64px 0 56px}
.hero h1{font-size:clamp(28px,4vw,44px);margin:0 0 14px;font-weight:800}
.hero p{font-size:18px;max-width:640px;opacity:.92;margin:0 0 26px}
.hero-search{max-width:560px;position:relative}
.hero-search input{
  width:100%;padding:16px 20px;border-radius:12px;border:none;font-size:16px;box-shadow:var(--shadow-lg);outline:none;
}
.hero-search .search-dropdown{color:var(--slate-800)}
.hero-stats{display:flex;gap:28px;margin-top:26px;flex-wrap:wrap}
.hero-stats div{font-size:14px;opacity:.9}
.hero-stats b{display:block;font-size:24px;font-weight:800}

/* Sections */
section.section{padding:52px 0}
.section h2{font-size:28px;margin:0 0 8px;color:var(--slate-900)}
.section .lead{color:var(--slate-500);margin:0 0 30px;max-width:680px}

/* Tool grid */
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.tool-card{
  background:var(--white);border:1px solid var(--slate-200);border-radius:var(--radius);
  padding:22px;transition:transform .15s ease, box-shadow .15s ease;display:flex;flex-direction:column;gap:10px;
}
.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);text-decoration:none}
.tool-card .icon{
  width:46px;height:46px;border-radius:10px;background:var(--slate-100);display:flex;align-items:center;
  justify-content:center;font-size:22px;
}
.tool-card h3{margin:0;font-size:16.5px;color:var(--slate-900)}
.tool-card p{margin:0;font-size:13.5px;color:var(--slate-500)}
.tool-card .cat-tag{font-size:11px;font-weight:700;color:var(--indigo);text-transform:uppercase;letter-spacing:.03em}

/* Tool page layout */
.tool-hero{background:var(--white);border-bottom:1px solid var(--slate-200);padding:30px 0}
.breadcrumb{font-size:13px;color:var(--slate-500);margin-bottom:10px}
.breadcrumb a{color:var(--slate-500)}
.tool-title{display:flex;align-items:center;gap:14px}
.tool-title .icon{width:52px;height:52px;font-size:26px;background:var(--slate-100);border-radius:12px;display:flex;align-items:center;justify-content:center}
.tool-title h1{margin:0;font-size:26px;color:var(--slate-900)}
.tool-title p{margin:2px 0 0;color:var(--slate-500);font-size:14.5px}

.app-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding:30px 0}
@media (max-width:960px){.app-wrap{grid-template-columns:1fr}}
.panel{background:var(--white);border:1px solid var(--slate-200);border-radius:var(--radius);padding:22px}
.panel h2{font-size:16px;margin:0 0 16px;color:var(--slate-900)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}
@media (max-width:520px){.field-row{grid-template-columns:1fr}}
.field{margin-bottom:12px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--slate-700);margin-bottom:5px}
.field input,.field select,.field textarea{
  width:100%;padding:9px 11px;border:1px solid var(--slate-300);border-radius:8px;font-size:14px;font-family:inherit;outline:none;background:#fff;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--indigo);box-shadow:0 0 0 3px rgba(79,70,229,.12)}
.field textarea{resize:vertical;min-height:70px}
.line-items{border:1px solid var(--slate-200);border-radius:8px;overflow:hidden;margin-bottom:14px}
.line-items table{width:100%;border-collapse:collapse;font-size:13px}
.line-items th{background:var(--slate-100);text-align:left;padding:8px;font-size:12px;color:var(--slate-700)}
.line-items td{padding:6px;border-top:1px solid var(--slate-100)}
.line-items input{border:1px solid var(--slate-200);padding:6px 8px;font-size:13px}
.btn{
  display:inline-flex;align-items:center;gap:8px;background:var(--indigo);color:#fff;border:none;padding:10px 18px;
  border-radius:8px;font-weight:700;font-size:14px;cursor:pointer;transition:background .15s;
}
.btn:hover{background:var(--indigo-dark)}
.btn.secondary{background:var(--white);color:var(--slate-700);border:1px solid var(--slate-300)}
.btn.secondary:hover{background:var(--slate-100)}
.btn.small{padding:6px 10px;font-size:12.5px}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}

.preview-box{background:var(--slate-50);border-radius:8px;padding:0;overflow:auto;max-height:760px}
.doc-sheet{background:#fff;padding:34px;min-height:600px;width:100%;color:#111;font-size:13.5px}
.doc-sheet h1,.doc-sheet h2,.doc-sheet h3{color:#111}
.doc-table{width:100%;border-collapse:collapse;margin:14px 0}
.doc-table th,.doc-table td{border:1px solid #ddd;padding:7px 9px;font-size:12.5px;text-align:left}
.doc-table th{background:#f4f4f6}

.content-block{background:var(--white);border:1px solid var(--slate-200);border-radius:var(--radius);padding:28px;margin-bottom:24px}
.content-block h2{margin-top:0}
.faq-item{border-bottom:1px solid var(--slate-200);padding:14px 0}
.faq-item:last-child{border-bottom:none}
.faq-item h3{margin:0 0 6px;font-size:15.5px;color:var(--slate-900)}
.faq-item p{margin:0;color:var(--slate-600,#475569);font-size:14.5px}

.related-tools{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}

/* Footer */
.site-footer{background:var(--slate-900);color:var(--slate-300);margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;padding:46px 0 24px}
@media (max-width:800px){.footer-grid{grid-template-columns:1fr 1fr}}
.footer-grid h4{color:#fff;font-size:14px;margin:0 0 14px;text-transform:uppercase;letter-spacing:.04em}
.footer-grid ul{list-style:none;padding:0;margin:0}
.footer-grid li{margin-bottom:9px;font-size:13.5px}
.footer-grid a{color:var(--slate-300)}
.footer-grid a:hover{color:#fff}
.footer-brand p{font-size:13.5px;color:var(--slate-500);max-width:320px}
.footer-bottom{border-top:1px solid var(--slate-800);padding:18px 0;font-size:12.5px;color:var(--slate-500);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

.static-page{padding:50px 0;max-width:820px;margin:0 auto}
.static-page h1{font-size:30px;margin-bottom:18px}
.static-page h2{font-size:20px;margin-top:30px}
.static-page p{color:var(--slate-700)}

.badge{display:inline-block;background:var(--slate-100);color:var(--slate-700);font-size:11.5px;padding:3px 9px;border-radius:20px;font-weight:700}
.category-pill{display:inline-block;background:rgba(79,70,229,.1);color:var(--indigo);font-size:12px;font-weight:700;padding:4px 12px;border-radius:20px;margin-bottom:10px}

@media print{
  .site-header,.site-footer,.tool-hero,.panel:first-child,.no-print,.content-block,section.section{display:none !important}
  .app-wrap{display:block;padding:0}
  .preview-box{max-height:none;overflow:visible}
  body{background:#fff}
}