:root{
  --primary:#4f46e5;
  --primary-dark:#3730a3;
  --primary-light:#eef2ff;
  --accent:#0ea5e9;
  --text:#1e293b;
  --text-light:#64748b;
  --bg:#ffffff;
  --bg-alt:#f8fafc;
  --border:#e2e8f0;
  --success:#16a34a;
  --radius:12px;
  --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);
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Segoe UI",Roboto,-apple-system,BlinkMacSystemFont,Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
button{font-family:inherit}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;gap:20px;padding:14px 20px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;color:var(--text)}
.brand img{width:32px;height:32px;border-radius:8px}
.brand span{color:var(--primary)}
.main-nav{display:flex;gap:22px;margin-left:10px}
.main-nav a{color:var(--text);font-weight:600;font-size:.95rem}
.main-nav a:hover{color:var(--primary);text-decoration:none}

.search-wrap{position:relative;margin-left:auto;width:280px}
.search-wrap input{
  width:100%;padding:9px 14px 9px 36px;border:1px solid var(--border);
  border-radius:999px;font-size:.9rem;background:var(--bg-alt) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%2364748b" stroke-width="2"><circle cx="11" cy="11" r="7"/><line x1="21" y1="21" x2="16.65" y2="16.65"/></svg>') no-repeat 12px center/16px;
  transition:border-color .15s;
}
.search-wrap input:focus{outline:none;border-color:var(--primary)}
.search-dropdown{
  position:absolute;top:calc(100% + 8px);left:0;right:0;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);max-height:320px;overflow-y:auto;display:none;z-index:200;
}
.search-dropdown.active{display:block}
.search-dropdown a{
  display:flex;justify-content:space-between;gap:10px;padding:10px 14px;
  color:var(--text);font-size:.92rem;border-bottom:1px solid var(--bg-alt);
}
.search-dropdown a:last-child{border-bottom:none}
.search-dropdown a:hover{background:var(--primary-light);text-decoration:none}
.search-dropdown .muted{color:var(--text-light);font-size:.82rem}
.search-empty{padding:14px;color:var(--text-light);font-size:.9rem}

.nav-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text)}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(160deg,var(--primary-light) 0%,#fff 60%);
  padding:56px 0 40px;text-align:center;
}
.hero h1{font-size:2.3rem;margin:0 0 14px;font-weight:800}
.hero p{color:var(--text-light);font-size:1.1rem;max-width:640px;margin:0 auto}
.hero .badge{
  display:inline-block;background:#fff;border:1px solid var(--border);color:var(--primary);
  padding:5px 14px;border-radius:999px;font-size:.8rem;font-weight:700;margin-bottom:16px;box-shadow:var(--shadow)
}

/* ---------- Tool grid ---------- */
.section{padding:36px 0}
.section-title{font-size:1.5rem;font-weight:800;margin-bottom:6px}
.section-sub{color:var(--text-light);margin-bottom:26px}
.tool-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px;
}
.tool-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;transition:transform .15s,box-shadow .15s;display:flex;flex-direction:column;gap:10px;
}
.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);text-decoration:none}
.tool-icon{
  width:44px;height:44px;border-radius:10px;background:var(--primary-light);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
}
.tool-icon svg{width:24px;height:24px}
.tool-card h3{margin:0;font-size:1.05rem;color:var(--text)}
.tool-card p{margin:0;color:var(--text-light);font-size:.9rem}
.tool-card .cta{margin-top:auto;font-weight:700;font-size:.85rem;color:var(--primary)}

/* ---------- Tool page ---------- */
.breadcrumb{color:var(--text-light);font-size:.85rem;margin:16px 0}
.tool-header{padding:30px 0 10px}
.tool-header h1{font-size:1.9rem;margin:0 0 8px}
.tool-header p{color:var(--text-light);max-width:700px}

.tool-app{
  background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;margin:24px 0;
}
.dropzone{
  border:2px dashed #c7d2fe;border-radius:var(--radius);padding:36px 16px;text-align:center;
  background:#fff;cursor:pointer;transition:border-color .15s,background .15s;
}
.dropzone.dragover{border-color:var(--primary);background:var(--primary-light)}
.dropzone p{margin:8px 0 0;color:var(--text-light);font-size:.9rem}
.dropzone strong{color:var(--primary)}
.dropzone input[type=file]{display:none}

.controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin:18px 0}
.field label{display:block;font-size:.82rem;font-weight:700;margin-bottom:6px;color:var(--text)}
.field input[type=text],.field input[type=number],.field select,.field input[type=color]{
  width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:8px;font-size:.9rem;background:#fff;
}
.field input[type=range]{width:100%}
.field .range-val{font-size:.8rem;color:var(--text-light)}
.checkbox-field{display:flex;align-items:center;gap:8px;font-size:.85rem}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--primary);color:#fff;border:none;padding:11px 22px;border-radius:9px;
  font-weight:700;font-size:.95rem;cursor:pointer;transition:background .15s;
}
.btn:hover{background:var(--primary-dark);text-decoration:none;color:#fff}
.btn.secondary{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn.secondary:hover{background:var(--primary-light)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}

.preview-area{margin-top:20px;display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media (max-width:640px){.preview-area{grid-template-columns:1fr}}
.preview-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px;text-align:center}
.preview-box h4{margin:0 0 10px;font-size:.85rem;color:var(--text-light);text-transform:uppercase;letter-spacing:.03em}
.preview-box canvas,.preview-box img{max-width:100%;border-radius:8px;background:
  repeating-conic-gradient(#f1f5f9 0% 25%, #fff 0% 50%) 50%/16px 16px;}
.stat-line{font-size:.82rem;color:var(--text-light);margin-top:8px}
.result-msg{margin-top:14px;font-size:.9rem;font-weight:600}
.result-msg.ok{color:var(--success)}
.result-msg.err{color:#dc2626}

.swatch-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:12px;margin-top:16px}
.swatch{border-radius:10px;overflow:hidden;border:1px solid var(--border)}
.swatch .chip{height:70px}
.swatch .code{background:#fff;padding:6px 8px;font-size:.78rem;text-align:center;font-family:monospace;cursor:pointer}

textarea.b64-out{width:100%;min-height:140px;font-family:monospace;font-size:.78rem;padding:10px;border-radius:8px;border:1px solid var(--border)}

.crop-stage{position:relative;max-width:100%;overflow:auto;background:#fff;border:1px solid var(--border);border-radius:10px}
.crop-stage img{display:block;max-width:100%;user-select:none}
.crop-box{position:absolute;border:2px solid var(--primary);background:rgba(79,70,229,.15);cursor:move}
.crop-box .handle{position:absolute;width:12px;height:12px;background:var(--primary);border-radius:50%;right:-6px;bottom:-6px;cursor:se-resize}

/* ---------- Content blocks ---------- */
.content-block{max-width:820px;margin:0 auto;padding:10px 0}
.content-block h2{font-size:1.35rem;margin:34px 0 12px}
.content-block p{margin:0 0 14px;color:var(--text);}
.faq-item{border-bottom:1px solid var(--border);padding:16px 0}
.faq-item h3{margin:0 0 8px;font-size:1.02rem}
.faq-item p{margin:0;color:var(--text-light)}

.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin-top:18px}

/* ---------- Static pages ---------- */
.static-page{max-width:780px;margin:0 auto;padding:40px 0 60px}
.static-page h1{font-size:1.9rem;margin-bottom:20px}
.static-page h2{font-size:1.2rem;margin:26px 0 10px}
.static-page p,.static-page li{color:var(--text-light)}
.contact-form{display:flex;flex-direction:column;gap:14px;max-width:480px;margin-top:20px}
.contact-form input,.contact-form textarea{padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:.92rem;font-family:inherit}
.contact-form textarea{min-height:120px;resize:vertical}

/* ---------- Footer ---------- */
.site-footer{background:#0f172a;color:#cbd5e1;margin-top:60px;padding:48px 0 20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
@media (max-width:800px){.footer-grid{grid-template-columns:1fr 1fr}}
.footer-col h4{color:#fff;font-size:.95rem;margin:0 0 14px}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px}
.footer-col a{color:#94a3b8;font-size:.88rem}
.footer-col a:hover{color:#fff}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;margin-bottom:10px}
.footer-brand img{width:28px;height:28px;border-radius:6px}
.footer-bottom{
  border-top:1px solid #1e293b;margin-top:36px;padding-top:18px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.82rem;color:#64748b;
}

/* ---------- Ad slot ---------- */
.ad-slot{
  max-width:var(--maxw);margin:26px auto;padding:0 20px;text-align:center;
}
.ad-slot .ad-inner{
  border:1px dashed var(--border);border-radius:10px;padding:18px;color:var(--text-light);font-size:.8rem;background:var(--bg-alt);
}

/* ---------- Responsive nav ---------- */
@media (max-width:860px){
  .main-nav{display:none}
  .nav-toggle{display:block;margin-left:auto}
  .search-wrap{width:100%;margin:12px 0 0;order:3}
  .header-inner{flex-wrap:wrap}
  .main-nav.open{display:flex;flex-direction:column;width:100%;order:4;gap:10px;padding-top:10px;border-top:1px solid var(--border);margin-top:10px}
}
@media (max-width:600px){
  .hero h1{font-size:1.7rem}
  .footer-grid{grid-template-columns:1fr 1fr}
}