/* ============ Design tokens ============ */
:root{
  --bg: #f6f8fb;
  --bg-elevated: #ffffff;
  --text: #101828;
  --text-muted: #4b5768;
  --border: #e2e8f0;
  --navy: #0b1220;
  --navy-2: #101c33;
  --accent: #2563eb;
  --accent-2: #7c3aed;
  --success: #16a34a;
  --error: #dc2626;
  --radius: 14px;
  --font-display: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --shadow: 0 8px 24px rgba(16,24,40,.08);
  --max-width: 1180px;
}

[data-theme="dark"]{
  --bg: #0b1220;
  --bg-elevated: #101c33;
  --text: #eef2f8;
  --text-muted: #9aa7bd;
  --border: #223151;
  --shadow: 0 8px 24px rgba(0,0,0,.35);
}

*{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;
  transition:background .25s ease, color .25s ease;
}
h1,h2,h3,h4{font-family:var(--font-display); margin:0 0 .5rem; line-height:1.2;}
p{margin:0 0 1rem;}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
.section-inner{max-width:var(--max-width); margin:0 auto; padding:4rem 1.5rem;}
.section-inner.narrow{max-width:820px;}
.center{text-align:center;}
.eyebrow{
  display:inline-block; font-size:.78rem; font-weight:600; letter-spacing:.08em;
  text-transform:uppercase; color:var(--accent); margin-bottom:.75rem;
}
.eyebrow.center{display:block; text-align:center;}

/* ============ Buttons ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:.85rem 1.5rem; border-radius:999px; border:none; cursor:pointer;
  font-family:var(--font-body); font-weight:600; font-size:.95rem;
  transition:transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.btn:active{transform:scale(.97);}
.btn:disabled{opacity:.6; cursor:not-allowed;}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2)); color:#fff;}
.btn-primary:hover:not(:disabled){box-shadow:0 6px 18px rgba(37,99,235,.35);}
.btn-outline{background:transparent; border:1.5px solid var(--border); color:var(--text);}
.btn-outline:hover{border-color:var(--accent); color:var(--accent);}
.btn-outline-light{background:transparent; border:1.5px solid rgba(255,255,255,.4); color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.1);}
.btn-ghost{background:transparent; border:none; color:var(--text-muted); font-weight:500;}
.btn-block{width:100%;}

/* ============ Cookie banner ============ */
.cookie-banner{
  position:fixed; bottom:0; left:0; right:0; z-index:999;
  background:var(--navy); color:#eef2f8;
  padding:1rem 1.25rem; display:flex; flex-wrap:wrap; gap:1rem;
  align-items:center; justify-content:space-between;
  box-shadow:0 -6px 20px rgba(0,0,0,.2);
  transform:translateY(120%); transition:transform .35s ease;
}
.cookie-banner.show{transform:translateY(0);}
.cookie-banner p{margin:0; font-size:.88rem; max-width:640px;}
.cookie-banner a{color:#93c5fd; text-decoration:underline;}
.cookie-actions{display:flex; gap:.6rem; flex-shrink:0;}
.cookie-banner .btn-ghost{color:#cbd5e1;}

/* ============ Header ============ */
.site-header{
  position:sticky; top:0; z-index:100;
  background:var(--bg-elevated); border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:var(--max-width); margin:0 auto; padding:.9rem 1.5rem;
  display:flex; align-items:center; justify-content:space-between; gap:1rem;
}
.logo{font-family:var(--font-display); font-weight:700; font-size:1.25rem; white-space:nowrap;}
.logo span{color:var(--accent);}

.main-nav ul{list-style:none; display:flex; gap:1.75rem; margin:0; padding:0;}
.main-nav li{position:relative;}
.nav-link{
  background:none; border:none; cursor:pointer; font-family:var(--font-body);
  font-size:.95rem; font-weight:500; color:var(--text); display:flex; align-items:center; gap:.35rem;
  padding:.5rem 0;
}
.nav-link svg{transition:transform .2s ease;}
.has-mega:hover .nav-link svg, .has-mega .nav-link[aria-expanded="true"] svg{transform:rotate(180deg);}

.mega-panel{
  position:absolute; top:100%; left:0;
  background:var(--bg-elevated); border:1px solid var(--border); border-radius:12px;
  box-shadow:var(--shadow); padding:1.25rem; display:flex; gap:2rem;
  opacity:0; visibility:hidden; transform:translateY(6px);
  transition:opacity .18s ease, transform .18s ease, visibility .18s ease;
  min-width:420px; z-index:50;
}
.has-mega:hover .mega-panel, .has-mega .mega-panel.open{
  opacity:1; visibility:visible; transform:translateY(0);
}
.mega-col{display:flex; flex-direction:column; gap:.6rem; min-width:180px;}
.mega-col a{font-size:.9rem; color:var(--text-muted); white-space:nowrap;}
.mega-col a:hover, .mega-col a.active{color:var(--accent);}

.header-actions{display:flex; align-items:center; gap:.75rem;}
.theme-toggle{
  width:38px; height:38px; border-radius:50%; border:1px solid var(--border);
  background:var(--bg); display:flex; align-items:center; justify-content:center;
  cursor:pointer; color:var(--text);
}
.icon-moon{display:none;}
[data-theme="dark"] .icon-sun{display:none;}
[data-theme="dark"] .icon-moon{display:block;}

.hamburger{display:none; flex-direction:column; gap:5px; width:30px; height:22px; background:none; border:none; cursor:pointer; padding:0;}
.hamburger span{display:block; height:2px; width:100%; background:var(--text); border-radius:2px; transition:.25s ease;}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-nav{display:none; background:var(--bg-elevated); border-bottom:1px solid var(--border); padding:0 1.5rem;}
.mobile-nav.open{display:block;}
.mobile-nav details{padding:.75rem 0; border-bottom:1px solid var(--border);}
.mobile-nav summary{font-weight:600; cursor:pointer; list-style:none;}
.mobile-nav summary::-webkit-details-marker{display:none;}
.mobile-nav details a{display:block; padding:.5rem 0 .5rem 1rem; font-size:.9rem; color:var(--text-muted);}
.mobile-link{display:block; padding:.85rem 0; font-weight:600;}

@media (max-width:900px){
  .main-nav{display:none;}
  .hamburger{display:flex;}
}

/* ============ Breadcrumb ============ */
.breadcrumb{background:var(--bg); border-bottom:1px solid var(--border);}
.breadcrumb-inner{
  max-width:var(--max-width); margin:0 auto; padding:.7rem 1.5rem;
  font-size:.82rem; color:var(--text-muted); display:flex; gap:.4rem; flex-wrap:wrap;
}
.breadcrumb-inner a:hover{color:var(--accent);}

/* ============ Hero ============ */
.hero{
  background:linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  color:#fff; text-align:center;
}
.hero-inner{max-width:760px; margin:0 auto; padding:4.5rem 1.5rem 3.5rem;}
.hero .eyebrow{color:#93c5fd;}
.hero h1{font-size:clamp(2rem, 5vw, 3rem);}
.hero-sub{color:#c7d2e3; font-size:1.05rem; max-width:560px; margin:0 auto;}

/* ============ Tool section ============ */
.tool-section{max-width:820px; margin:-2rem auto 0; padding:0 1.5rem 3rem; position:relative; z-index:5;}
.tool-card, .result-card{
  background:var(--bg-elevated); border:1px solid var(--border); border-radius:var(--radius);
  box-shadow:var(--shadow); padding:1.75rem;
}
.tool-card{margin-bottom:1.5rem;}
.tool-label{display:block; font-weight:600; margin-bottom:.5rem; font-size:.92rem;}
#inputText{
  width:100%; padding:.9rem 1rem; border-radius:10px; border:1.5px solid var(--border);
  background:var(--bg); color:var(--text); font-family:var(--font-body); font-size:1rem; resize:vertical;
}
#inputText:focus{outline:none; border-color:var(--accent); box-shadow:0 0 0 3px rgba(37,99,235,.15);}
.tool-meta{display:flex; justify-content:space-between; align-items:center; margin:.5rem 0 1.25rem; font-size:.8rem; color:var(--text-muted);}
.error-msg{color:var(--error); font-weight:600;}

.style-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(140px,1fr)); gap:.6rem; margin-bottom:1.25rem;}
.style-chip{
  border:1.5px solid var(--border); background:var(--bg); color:var(--text);
  border-radius:10px; padding:.6rem .5rem; font-size:.85rem; cursor:pointer; text-align:center;
  transition:border-color .15s ease, color .15s ease;
}
.style-chip.active{border-color:var(--accent); color:var(--accent); background:rgba(37,99,235,.08);}

.result-card{scroll-margin-top:100px;}
.result-head p{color:var(--text-muted); font-size:.9rem; margin-bottom:1.25rem;}
.result-grid{display:flex; flex-direction:column; gap:.75rem; max-height:480px; overflow-y:auto;}
.result-item{
  display:flex; align-items:center; justify-content:space-between; gap:1rem;
  border:1px solid var(--border); border-radius:10px; padding:.85rem 1rem; background:var(--bg);
}
.result-text{font-size:1rem; word-break:break-word; flex:1;}
.result-style-name{display:block; font-size:.72rem; color:var(--text-muted); font-weight:600; text-transform:uppercase; letter-spacing:.04em; margin-bottom:.25rem;}
.result-actions{display:flex; gap:.4rem; flex-shrink:0;}
.icon-btn{
  width:36px; height:36px; border-radius:8px; border:1px solid var(--border); background:var(--bg-elevated);
  color:var(--text); display:flex; align-items:center; justify-content:center; cursor:pointer;
}
.icon-btn:hover{border-color:var(--accent); color:var(--accent);}
.icon-btn.copied{border-color:var(--success); color:var(--success);}

.post-actions{display:flex; gap:.75rem; margin-top:1.5rem; flex-wrap:wrap;}

/* ============ Reference links ============ */
.ref-links{background:var(--bg-elevated); border-top:1px solid var(--border); border-bottom:1px solid var(--border);}
.ref-links-inner{max-width:var(--max-width); margin:0 auto; padding:2.5rem 1.5rem;}
.ref-links-inner h3{font-size:1.05rem; margin-bottom:1rem;}
.ref-grid{display:flex; flex-wrap:wrap; gap:.6rem;}
.ref-grid a{
  font-size:.82rem; padding:.45rem .8rem; border:1px solid var(--border); border-radius:999px;
  color:var(--text-muted);
}
.ref-grid a:hover{color:var(--accent); border-color:var(--accent);}

/* ============ Features ============ */
.feature-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:1.5rem; margin-top:2rem;}
.feature-item{
  background:var(--bg-elevated); border:1px solid var(--border); border-radius:var(--radius);
  padding:1.75rem; box-shadow:var(--shadow);
}
.feature-icon{font-size:1.5rem; margin-bottom:.75rem;}
.feature-item p{color:var(--text-muted); font-size:.92rem; margin:0;}

/* ============ How it works ============ */
.how-it-works{background:var(--bg-elevated); border-top:1px solid var(--border); border-bottom:1px solid var(--border);}
.steps-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:1.75rem; margin-top:2rem;}
.step-item{text-align:center;}
.step-num{
  display:inline-flex; align-items:center; justify-content:center; width:42px; height:42px;
  border-radius:50%; background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff; font-weight:700; margin-bottom:.75rem;
}
.step-item p{color:var(--text-muted); font-size:.92rem;}

/* ============ SEO content ============ */
.seo-content p{color:var(--text-muted); font-size:.98rem;}

/* ============ FAQ ============ */
.faq-list{margin-top:1.5rem; display:flex; flex-direction:column; gap:.75rem;}
.faq-item{
  background:var(--bg-elevated); border:1px solid var(--border); border-radius:12px; padding:1rem 1.25rem;
}
.faq-item summary{font-weight:600; cursor:pointer; list-style:none; display:flex; justify-content:space-between; align-items:center;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:'+'; font-size:1.2rem; color:var(--accent);}
.faq-item[open] summary::after{content:'−';}
.faq-item p{color:var(--text-muted); margin:.75rem 0 0; font-size:.92rem;}

/* ============ CTA ============ */
.cta{background:linear-gradient(135deg,var(--navy),var(--navy-2)); color:#fff;}
.cta p{color:#c7d2e3;}
.cta-actions{display:flex; gap:1rem; justify-content:center; flex-wrap:wrap; margin-top:1rem;}

/* ============ Footer ============ */
.site-footer{background:var(--navy); color:#c7d2e3; padding-top:3rem;}
.footer-top{
  max-width:var(--max-width); margin:0 auto; padding:0 1.5rem 2.5rem;
  display:grid; grid-template-columns:repeat(auto-fit,minmax(160px,1fr)); gap:2rem;
}
.footer-col h4{color:#fff; font-size:.9rem; margin-bottom:1rem;}
.footer-col a{display:block; font-size:.82rem; margin-bottom:.6rem; color:#9aa7bd;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1); padding:1.5rem; text-align:center;
}
.footer-bottom p{margin:0 0 .5rem; font-size:.82rem;}
.disclaimer{font-size:.72rem !important; color:#6b7994; max-width:720px; margin:0 auto !important;}

/* ============ Utility / responsive guard ============ */
html, body{overflow-x:hidden; max-width:100%;}
@media (max-width:480px){
  .header-inner{padding:.8rem 1rem;}
  .style-grid{grid-template-columns:repeat(auto-fill,minmax(110px,1fr));}
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  *{transition:none !important; scroll-behavior:auto !important;}
}

/* Focus visibility */
a:focus-visible, button:focus-visible, textarea:focus-visible{
  outline:2px solid var(--accent); outline-offset:2px;
}