/* ========= Theme Tokens ========= */
:root{
  --bg:#ffffff;
  --bg-alt:#f7f8fb;
  --surface:#ffffff;
  --text:#14151a;
  --text-muted:#5c6270;
  --border:#e6e8ee;
  --primary:#5f2eea;
  --primary-dark:#4a20c2;
  --accent:#00c2a8;
  --danger:#e0403f;
  --success:#1c9d63;
  --shadow: 0 8px 24px rgba(20,21,26,0.08);
  --radius:14px;
  --font-body:'Inter', sans-serif;
  --font-display:'Outfit', sans-serif;
}
[data-theme="dark"]{
  --bg:#0f1016;
  --bg-alt:#15161f;
  --surface:#1a1b26;
  --text:#f1f2f7;
  --text-muted:#a4a8b7;
  --border:#2b2d3b;
  --shadow: 0 8px 24px rgba(0,0,0,0.4);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.6;
  overflow-x:hidden;
  transition:background .2s ease, color .2s ease;
}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.2;margin:0 0 .5em;}
a{color:var(--primary);text-decoration:none;}
img{max-width:100%;display:block;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
button{font-family:inherit;cursor:pointer;}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);}

/* ========= Top Utility Bar ========= */
.topbar{background:var(--primary);color:#fff;font-size:13px;padding:6px 0;}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;}
.topbar a{color:#fff;opacity:.9;}

/* ========= Navbar ========= */
.navbar{
  position:sticky;top:0;z-index:1000;
  background:var(--surface);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;gap:16px;}
.brand{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:700;font-size:20px;color:var(--text);white-space:nowrap;}
.brand span{color:var(--primary);}
.nav-menu{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0;flex-wrap:nowrap;}
.nav-menu > li{position:relative;}
.nav-menu > li > a, .nav-menu > li > button{
  display:flex;align-items:center;gap:4px;padding:10px 12px;color:var(--text);font-weight:500;font-size:14.5px;background:none;border:none;border-radius:8px;white-space:nowrap;
}
.nav-menu > li > a:hover, .nav-menu > li > button:hover{background:var(--bg-alt);}
.mega-dropdown{
  position:absolute;top:100%;left:0;
  background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);
  padding:16px;display:none;grid-template-columns:repeat(2,minmax(210px,1fr));gap:6px 20px;min-width:440px;
  max-height:70vh;overflow-y:auto;z-index:1100;
}
.nav-menu > li:hover .mega-dropdown, .nav-menu > li.open .mega-dropdown{display:grid;}
.mega-dropdown a{padding:7px 8px;border-radius:8px;color:var(--text-muted);font-size:14px;}
.mega-dropdown a:hover{background:var(--bg-alt);color:var(--primary);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.theme-toggle{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--border);background:var(--bg-alt);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--text);
}
.hamburger{display:none;width:40px;height:40px;border:1px solid var(--border);background:var(--bg-alt);border-radius:8px;font-size:20px;color:var(--text);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:10px;font-weight:600;font-size:15px;border:none;transition:transform .15s ease, box-shadow .15s ease;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);}
.btn-outline{background:transparent;border:1.5px solid var(--border);color:var(--text);}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none;}

/* ========= Breadcrumb ========= */
.breadcrumb{padding:14px 0;font-size:13.5px;color:var(--text-muted);}
.breadcrumb a{color:var(--text-muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{margin:0 6px;}
.breadcrumb .current{color:var(--text);font-weight:600;}

/* ========= Hero ========= */
.hero{padding:40px 0 60px;text-align:center;background:linear-gradient(180deg,var(--bg-alt),var(--bg));}
.hero .badge{
  display:inline-block;background:rgba(95,46,234,0.1);color:var(--primary);font-weight:600;font-size:13px;
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.hero h1{font-size:clamp(28px,4.4vw,46px);max-width:820px;margin:0 auto 14px;}
.hero p.lead{color:var(--text-muted);max-width:620px;margin:0 auto 30px;font-size:17px;}

/* ========= Tool Form ========= */
.tool-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px;max-width:760px;margin:0 auto;text-align:left;
}
.tool-card label{font-weight:600;font-size:14px;display:block;margin-bottom:8px;}
.input-row{display:flex;gap:10px;flex-wrap:wrap;}
.input-row input[type="text"]{
  flex:1;min-width:220px;padding:14px 16px;border-radius:10px;border:1.5px solid var(--border);
  background:var(--bg);color:var(--text);font-size:15px;
}
.input-row input:focus{outline:none;border-color:var(--primary);}
.field-hint{font-size:12.5px;color:var(--text-muted);margin-top:6px;}
.field-error{font-size:12.5px;color:var(--danger);margin-top:6px;display:none;font-weight:600;}
.field-error.show{display:block;}
.input-row input.invalid{border-color:var(--danger);}
.input-row input.valid{border-color:var(--success);}

/* ========= Results ========= */
#results-section{display:none;padding:40px 0 60px;scroll-margin-top:90px;}
#results-section.show{display:block;}
.result-summary{
  background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px;margin-bottom:26px;
  display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;align-items:center;
}
.status-pill{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:13.5px;padding:6px 12px;border-radius:999px;}
.status-ok{background:rgba(28,157,99,0.12);color:var(--success);}
.status-bad{background:rgba(224,64,63,0.12);color:var(--danger);}
.snippet-card, .share-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin-bottom:16px;
}
.snippet-card h4{display:flex;justify-content:space-between;align-items:center;font-size:15px;}
.snippet-card pre{
  background:var(--bg-alt);border-radius:10px;padding:14px;overflow-x:auto;font-size:13px;margin:10px 0 0;white-space:pre-wrap;word-break:break-word;
}
.copy-btn{font-size:12.5px;padding:6px 12px;border-radius:8px;border:1px solid var(--border);background:var(--bg-alt);color:var(--text);}
.copy-btn:hover{border-color:var(--primary);color:var(--primary);}
.share-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;}
.share-grid a{
  display:flex;align-items:center;justify-content:center;padding:12px;border:1px solid var(--border);border-radius:10px;
  font-weight:600;font-size:14px;color:var(--text);background:var(--bg-alt);
}
.share-grid a:hover{border-color:var(--primary);color:var(--primary);}
.result-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0;}
.post-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin-top:30px;padding-top:24px;border-top:1px solid var(--border);}

/* ========= Reference Links Strip ========= */
.ref-strip{padding:36px 0;background:var(--bg-alt);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.ref-strip h3{font-size:18px;margin-bottom:14px;}
.ref-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:8px 20px;}
.ref-grid a{font-size:13.5px;color:var(--text-muted);}
.ref-grid a:hover{color:var(--primary);}

/* ========= Sections ========= */
section{padding:60px 0;}
.section-head{text-align:center;max-width:640px;margin:0 auto 40px;}
.section-head h2{font-size:clamp(24px,3.4vw,34px);}
.section-head p{color:var(--text-muted);}

.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;}
.feature-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;
  transition:transform .15s ease, box-shadow .15s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.feature-card .icon{font-size:26px;margin-bottom:10px;}
.feature-card h3{font-size:17px;}
.feature-card p{color:var(--text-muted);font-size:14.5px;margin:0;}

.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px;counter-reset:step;}
.step-card{position:relative;padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);}
.step-card::before{
  counter-increment:step;content:counter(step);
  width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.step-card h3{font-size:16px;}
.step-card p{color:var(--text-muted);font-size:14px;margin:0;}

.faq-item{border:1px solid var(--border);border-radius:12px;margin-bottom:12px;overflow:hidden;background:var(--surface);}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;padding:18px 20px;
  background:none;border:none;font-weight:600;font-size:15.5px;color:var(--text);text-align:left;
}
.faq-q .plus{transition:transform .2s ease;font-size:20px;color:var(--primary);}
.faq-item.open .faq-q .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;padding:0 20px;color:var(--text-muted);font-size:14.5px;}
.faq-item.open .faq-a{max-height:300px;padding:0 20px 18px;}

.article-block{max-width:840px;margin:0 auto;color:var(--text-muted);font-size:15px;}
.article-block h2{color:var(--text);}

.cta{background:linear-gradient(135deg,var(--primary),#7a4bf0);border-radius:24px;padding:50px 30px;text-align:center;color:#fff;margin:0 20px;}
.cta h2{color:#fff;font-size:clamp(22px,3.4vw,32px);}
.cta p{opacity:.9;max-width:520px;margin:0 auto 24px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.cta .btn-outline{border-color:rgba(255,255,255,0.5);color:#fff;}
.cta .btn-outline:hover{background:rgba(255,255,255,0.15);border-color:#fff;}
.cta .btn-primary{background:#fff;color:var(--primary);}
.cta .btn-primary:hover{background:#f1f1f1;}

/* ========= Footer ========= */
footer{background:var(--bg-alt);border-top:1px solid var(--border);padding:50px 0 20px;margin-top:40px;}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px;}
.footer-grid h4{font-size:14px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin-bottom:14px;}
.footer-grid a{display:block;font-size:14px;color:var(--text);opacity:.85;margin-bottom:10px;}
.footer-grid a:hover{color:var(--primary);opacity:1;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13.5px;color:var(--text-muted);
}
.disclaimer{font-size:12.5px;color:var(--text-muted);max-width:900px;margin:20px auto 0;text-align:center;line-height:1.7;}

/* ========= Cookie Banner ========= */
#cookie-banner{
  position:fixed;bottom:0;left:0;right:0;z-index:2000;background:var(--surface);border-top:1px solid var(--border);
  padding:16px 20px;display:none;box-shadow:0 -6px 20px rgba(0,0,0,.1);
}
#cookie-banner.show{display:flex;}
.cookie-inner{max-width:1180px;margin:0 auto;display:flex;gap:16px;align-items:center;flex-wrap:wrap;justify-content:space-between;width:100%;}
.cookie-inner p{margin:0;font-size:13.5px;color:var(--text-muted);flex:1;min-width:240px;}
.cookie-actions{display:flex;gap:10px;}

/* ========= Toast ========= */
#toast{
  position:fixed;bottom:24px;right:24px;background:var(--text);color:var(--bg);padding:12px 18px;border-radius:10px;
  font-size:14px;font-weight:600;z-index:3000;opacity:0;transform:translateY(10px);transition:all .25s ease;pointer-events:none;
}
#toast.show{opacity:1;transform:translateY(0);}

/* ========= Responsive ========= */
@media (max-width:900px){
  .nav-menu{position:fixed;top:64px;left:0;right:0;bottom:0;background:var(--surface);flex-direction:column;align-items:stretch;
    padding:14px;overflow-y:auto;transform:translateX(-100%);transition:transform .25s ease;gap:2px;}
  .nav-menu.open{transform:translateX(0);}
  .nav-menu > li > a, .nav-menu > li > button{width:100%;}
  .mega-dropdown{position:static;box-shadow:none;border:none;grid-template-columns:1fr;min-width:0;display:none;padding:4px 10px;}
  .nav-menu > li.open .mega-dropdown{display:grid;}
  .hamburger{display:block;}
  .nav-actions .btn-outline{display:none;}
}
@media (max-width:600px){
  .input-row{flex-direction:column;}
  .cta{margin:0 10px;}
}