/* ===== Tokens ===== */
:root{
  --ink:#16233d;
  --ink-soft:#3c4a63;
  --paper:#f3f4f1;
  --paper-2:#e9ebe5;
  --surface:#ffffff;
  --line:#dcded7;
  --accent:#1f9d7c;
  --accent-dark:#167a61;
  --accent-2:#e0a458;
  --danger:#c94f4f;
  --pdf-red:#c65252;
  --font-display:'Outfit',sans-serif;
  --font-body:'Inter',sans-serif;
  --radius-sm:6px;
  --radius-md:12px;
  --radius-lg:20px;
  --shadow:0 4px 20px rgba(22,35,61,0.08);
  --shadow-lg:0 12px 40px rgba(22,35,61,0.14);
  --maxw:1160px;
  color-scheme: light;
}
[data-theme="dark"]{
  --ink:#eef1f6;
  --ink-soft:#aab4c6;
  --paper:#0f1626;
  --paper-2:#141d33;
  --surface:#182338;
  --line:#2a3652;
  --shadow:0 4px 20px rgba(0,0,0,0.35);
  --shadow-lg:0 12px 40px rgba(0,0,0,0.5);
  color-scheme: dark;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  line-height:1.6;
  overflow-x:hidden;
  transition:background .25s ease,color .25s ease;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3{font-family:var(--font-display);line-height:1.15;margin:0 0 .5em;}
h1{font-size:clamp(2rem,4.5vw,3.1rem);font-weight:700;}
h2{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:600;}
h3{font-size:1.05rem;font-weight:600;}
p{margin:0 0 1em;color:var(--ink-soft);}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px;width:100%;}
.skip-link{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:10px 16px;z-index:200;border-radius:0 0 8px 0;}
.skip-link:focus{left:0;}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,opacity .15s ease;
  font-family:var(--font-body);
}
.btn:active{transform:scale(.97);}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--paper-2);}
.btn-large{padding:14px 28px;font-size:1rem;}
.btn-small{padding:7px 14px;font-size:.85rem;}
.btn:disabled{opacity:.55;cursor:not-allowed;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--accent-2);outline-offset:2px;}

/* Cookie banner */
.cookie-banner{
  position:fixed;bottom:16px;left:16px;right:16px;z-index:500;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-lg);padding:16px 20px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  max-width:640px;margin:0 auto;
}
.cookie-banner p{margin:0;font-size:.9rem;flex:1 1 260px;}
.cookie-banner a{color:var(--accent);text-decoration:underline;}
.cookie-actions{display:flex;gap:8px;flex-shrink:0;}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;background:var(--surface);border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;padding:14px 20px;}
.logo{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:700;font-size:1.05rem;}
.logo-mark{width:32px;height:32px;border-radius:8px;background:var(--ink);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:800;flex-shrink:0;}
.main-nav{margin-left:8px;flex:1;}
.main-nav ul{list-style:none;display:flex;gap:6px;margin:0;padding:0;align-items:center;}
.main-nav a,.nav-link{
  display:inline-block;padding:10px 12px;border-radius:8px;font-size:.92rem;font-weight:500;color:var(--ink);
  background:none;border:none;font-family:var(--font-body);cursor:pointer;
}
.main-nav a:hover,.nav-link:hover{background:var(--paper-2);}
.has-dropdown{position:relative;}
.mega-menu{
  display:none;position:absolute;top:100%;left:0;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:12px;width:560px;
  grid-template-columns:1fr 1fr;gap:2px 16px;z-index:150;max-height:70vh;overflow-y:auto;
}
.has-dropdown.open .mega-menu{display:grid;}
.mega-menu a{padding:8px 10px;border-radius:6px;font-size:.88rem;}
.mega-menu a:hover{background:var(--paper-2);color:var(--accent);}

.header-actions{display:flex;align-items:center;gap:10px;}
.theme-toggle{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:var(--paper);color:var(--ink);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.icon-moon{display:none;}
[data-theme="dark"] .icon-sun{display:none;}
[data-theme="dark"] .icon-moon{display:block;}

.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:8px;}
.nav-toggle span{width:22px;height:2px;background:var(--ink);border-radius:2px;}
.mobile-nav{display:none;flex-direction:column;padding:8px 20px 16px;border-top:1px solid var(--line);}
.mobile-nav a{padding:10px 4px;border-bottom:1px solid var(--line);font-size:.95rem;}
.mobile-nav.open{display:flex;}

/* Breadcrumb */
.breadcrumb{margin:18px auto 0;}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:0;margin:0;font-size:.82rem;color:var(--ink-soft);}
.breadcrumb li:not(:last-child)::after{content:'/';margin-left:6px;color:var(--ink-soft);}
.breadcrumb a{color:var(--ink-soft);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb li[aria-current]{color:var(--ink);font-weight:500;}

/* Hero */
.hero{
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
  padding:56px 20px 40px;
}
.eyebrow{color:var(--accent);font-weight:600;font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px;}
.hero-sub{font-size:1.05rem;max-width:52ch;}
.hero-cta-row{display:flex;gap:14px;flex-wrap:wrap;margin:20px 0;}
.hero-trust{list-style:none;padding:0;margin:16px 0 0;display:flex;flex-direction:column;gap:6px;font-size:.85rem;color:var(--ink-soft);}
.hero-trust li::before{content:'\2713';color:var(--accent);margin-right:8px;font-weight:700;}

.hero-visual{display:flex;align-items:center;justify-content:center;}
.doc-morph{display:flex;align-items:center;gap:14px;}
.doc{
  width:120px;height:150px;border-radius:10px;background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-lg);padding:16px 14px;position:relative;
}
.doc-badge{
  position:absolute;top:-10px;left:12px;font-family:var(--font-display);font-size:.68rem;font-weight:700;
  padding:3px 8px;border-radius:6px;color:#fff;letter-spacing:.03em;
}
.doc-pdf .doc-badge{background:var(--pdf-red);}
.doc-docx .doc-badge{background:#2b579a;}
.doc-line{display:block;height:7px;border-radius:4px;background:var(--paper-2);margin-top:14px;}
.doc-line.short{width:60%;}
.doc-pdf{animation:float 4s ease-in-out infinite;}
.doc-docx{animation:float 4s ease-in-out infinite .3s;}
.doc-arrow{color:var(--accent);animation:pulse 2.2s ease-in-out infinite;}
@keyframes float{0%,100%{transform:translateY(0);}50%{transform:translateY(-8px);}}
@keyframes pulse{0%,100%{opacity:.55;}50%{opacity:1;}}
@media (prefers-reduced-motion: reduce){
  .doc-pdf,.doc-docx,.doc-arrow{animation:none;}
}

/* Converter */
.converter-section{padding:20px 20px 60px;display:flex;flex-direction:column;gap:24px;}
.converter-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow);
}
.dropzone{
  border:2px dashed var(--line);border-radius:var(--radius-md);padding:36px 20px;text-align:center;cursor:pointer;
  color:var(--ink-soft);transition:border-color .15s ease,background .15s ease;
}
.dropzone svg{margin:0 auto 10px;color:var(--accent);}
.dropzone:hover,.dropzone.dragover{border-color:var(--accent);background:var(--paper-2);}
.dz-title{font-weight:600;color:var(--ink);margin:0 0 4px;}
.dz-sub{font-size:.85rem;margin:0;}

.file-info{
  display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;
  background:var(--paper-2);border-radius:var(--radius-md);padding:14px 16px;
}
.file-info-main{display:flex;align-items:center;gap:12px;min-width:0;}
.file-info-main svg{flex-shrink:0;color:var(--accent);}
.file-name{margin:0;font-weight:600;font-size:.92rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:280px;}
.file-meta{margin:0;font-size:.78rem;color:var(--ink-soft);}

.validation-msg{
  margin-top:14px;padding:12px 14px;border-radius:var(--radius-sm);background:rgba(201,79,79,.12);
  color:var(--danger);font-size:.88rem;border:1px solid rgba(201,79,79,.3);
}

.options-row{display:flex;flex-wrap:wrap;gap:18px;margin-top:18px;}
.option-toggle{display:flex;align-items:center;gap:8px;font-size:.88rem;cursor:pointer;color:var(--ink-soft);}
.option-toggle input{width:16px;height:16px;accent-color:var(--accent);}

.btn-convert{width:100%;margin-top:22px;position:relative;}
.btn-spinner{
  width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

.progress-wrap{margin-top:18px;}
.progress-bar{height:8px;border-radius:999px;background:var(--paper-2);overflow:hidden;}
.progress-fill{height:100%;width:0%;background:var(--accent);transition:width .3s ease;}
.progress-text{margin:8px 0 0;font-size:.85rem;color:var(--ink-soft);text-align:center;}

.results-card,.error-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow);
}
.results-head h2{margin-bottom:6px;}
.results-summary{margin:0 0 18px;font-size:.92rem;}
.results-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px;}
.preview-box{background:var(--paper-2);border-radius:var(--radius-md);padding:16px;}
.preview-label{margin:0 0 8px;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft);}
.text-preview{
  margin:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.82rem;white-space:pre-wrap;
  word-break:break-word;max-height:220px;overflow-y:auto;color:var(--ink);
}
.error-card{border-color:rgba(201,79,79,.4);}
.error-card h2{color:var(--danger);}

/* Related tools */
.related-tools{padding:20px 20px 10px;}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px;}
.tool-grid a{
  padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);font-size:.85rem;background:var(--surface);
  transition:border-color .15s ease,color .15s ease;
}
.tool-grid a:hover{border-color:var(--accent);color:var(--accent);}

/* Features */
.features{padding:50px 20px;}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;}
.feature-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:20px;}
.feature-card p{margin:0;font-size:.9rem;}

/* How it works */
.how-it-works{padding:30px 20px 50px;}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px;}
.steps li{display:flex;gap:14px;align-items:flex-start;}
.step-num{
  width:34px;height:34px;border-radius:50%;background:var(--ink);color:var(--paper);display:flex;align-items:center;
  justify-content:center;font-family:var(--font-display);font-weight:700;flex-shrink:0;
}
.steps h3{margin-bottom:4px;}
.steps p{margin:0;font-size:.88rem;}

/* Article */
.article{padding:20px 20px 50px;max-width:840px;}
.article p{font-size:.97rem;}

/* FAQ */
.faq{padding:10px 20px 50px;max-width:840px;}
.faq-list details{
  border:1px solid var(--line);border-radius:var(--radius-md);padding:14px 18px;margin-bottom:10px;background:var(--surface);
}
.faq-list summary{font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;}
.faq-list summary::-webkit-details-marker{display:none;}
.faq-list summary::after{content:'+';font-size:1.2rem;color:var(--accent);}
.faq-list details[open] summary::after{content:'\2212';}
.faq-list p{margin:10px 0 0;font-size:.9rem;}

/* CTA */
.cta{padding:20px 20px 60px;}
.cta-box{
  background:linear-gradient(135deg,var(--ink),#0d1626);color:#fff;border-radius:var(--radius-lg);
  padding:44px 32px;text-align:center;
}
.cta-box h2{color:#fff;}
.cta-box p{color:#c7ceda;}
.cta-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:18px;}
[data-theme="dark"] .cta-box{background:linear-gradient(135deg,#0a1120,#141d33);}

/* Footer */
.site-footer{background:var(--paper-2);border-top:1px solid var(--line);padding:44px 0 20px;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:24px;}
.footer-col h3{font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft);margin-bottom:12px;}
.footer-col a{display:block;font-size:.85rem;padding:4px 0;color:var(--ink-soft);}
.footer-col a:hover{color:var(--accent);}
.footer-brand p{font-size:.85rem;margin-top:10px;}
.footer-bottom{border-top:1px solid var(--line);margin-top:30px;padding-top:18px;font-size:.75rem;color:var(--ink-soft);}
.footer-bottom p{margin:0 0 6px;}

/* Responsive */
@media (max-width:900px){
  .hero{grid-template-columns:1fr;padding-top:30px;}
  .hero-visual{order:-1;margin-bottom:10px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:760px){
  .main-nav,.mega-menu{display:none;}
  .nav-toggle{display:flex;}
  .mobile-nav{display:none;}
  .mobile-nav.open{display:flex;}
  .doc{width:96px;height:120px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .results-actions{flex-direction:column;}
  .results-actions .btn{width:100%;}
  .cookie-banner{left:10px;right:10px;bottom:10px;}
}