/* FileShiftly — shared styles. Vanilla CSS, no frameworks. */
:root{
  --bg:#ffffff;
  --bg-soft:#f6f8fc;
  --bg-card:#ffffff;
  --text:#1a2233;
  --muted:#5b6577;
  --line:#e4e9f2;
  --brand:#2f6bff;
  --brand-dark:#1f4fd1;
  --brand-soft:#eaf0ff;
  --green:#0e9f6e;
  --green-soft:#e6f7ef;
  --radius:14px;
  --shadow:0 6px 24px rgba(31,79,209,.08);
  --maxw:1080px;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--text);background:var(--bg);
  line-height:1.65;font-size:16.5px;-webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img,canvas,svg{max-width:100%}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line);
}
.header-inner{
  max-width:var(--maxw);margin:0 auto;padding:.7rem 1.2rem;
  display:flex;align-items:center;gap:1rem;
}
.logo{display:flex;align-items:center;gap:.55rem;font-weight:800;font-size:1.2rem;color:var(--text)}
.logo:hover{text-decoration:none}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),#7aa5ff);color:#fff;font-weight:900;
}
.main-nav{margin-left:auto;display:flex;gap:1.1rem;font-size:.95rem}
.main-nav a{color:var(--muted);font-weight:600}
.main-nav a:hover{color:var(--brand);text-decoration:none}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 1.2rem}
.hero{padding:3.2rem 0 2.2rem;text-align:center}
.hero h1{font-size:clamp(1.9rem,4.5vw,2.9rem);line-height:1.2;margin:.2rem 0 .8rem;letter-spacing:-.01em}
.hero p.lead{color:var(--muted);font-size:1.12rem;max-width:640px;margin:0 auto 1.4rem}
.badges{display:flex;flex-wrap:wrap;gap:.6rem;justify-content:center;margin:1.2rem 0}
.badge{
  display:inline-flex;align-items:center;gap:.45rem;background:var(--green-soft);
  color:#0b6e4f;border:1px solid #bfe6d2;font-weight:700;font-size:.88rem;
  padding:.42rem .85rem;border-radius:999px;
}
.badge.blue{background:var(--brand-soft);color:var(--brand-dark);border-color:#c9d8ff}

/* ---------- tool grid ---------- */
.tool-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));
  gap:1rem;margin:2rem 0 3rem;
}
.tool-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.25rem 1.15rem;box-shadow:var(--shadow);color:var(--text);
  transition:transform .15s ease,box-shadow .15s ease;display:block;
}
.tool-card:hover{text-decoration:none;transform:translateY(-3px);box-shadow:0 12px 30px rgba(31,79,209,.14)}
.tool-card .ticon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);
  display:grid;place-items:center;font-weight:800;color:var(--brand-dark);margin-bottom:.7rem;font-size:.8rem;
}
.tool-card h3{margin:.1rem 0 .35rem;font-size:1.05rem}
.tool-card p{margin:0;color:var(--muted);font-size:.92rem}

/* ---------- sections / prose ---------- */
.section{padding:1.2rem 0}
.prose{max-width:760px}
.prose h2{font-size:1.45rem;margin:2.2rem 0 .7rem;letter-spacing:-.01em}
.prose h3{font-size:1.12rem;margin:1.6rem 0 .5rem}
.prose p{margin:.7rem 0}
.prose ul,.prose ol{padding-left:1.3rem;margin:.7rem 0}
.prose li{margin:.35rem 0}
.prose code{background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:.1rem .4rem;font-size:.9em}
.callout{
  background:var(--brand-soft);border:1px solid #c9d8ff;border-radius:var(--radius);
  padding:1rem 1.2rem;margin:1.4rem 0;
}
.callout.green{background:var(--green-soft);border-color:#bfe6d2}

/* ---------- converter widget ---------- */
.converter{
  background:var(--bg-card);border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow);padding:1.6rem;margin:1.8rem 0;max-width:760px;
}
.dropzone{
  border:2px dashed #b9c6e2;border-radius:var(--radius);padding:2.6rem 1.2rem;
  text-align:center;cursor:pointer;transition:border-color .15s,background .15s;background:var(--bg-soft);
}
.dropzone:hover,.dropzone.dragover{border-color:var(--brand);background:var(--brand-soft)}
.dropzone .dz-icon{font-size:2rem;margin-bottom:.4rem}
.dropzone p{margin:.3rem 0}
.dropzone .dz-note{color:var(--muted);font-size:.88rem}
.dropzone .link{color:var(--brand);font-weight:700}
.workarea{margin-top:1.2rem}
.preview-box{
  background:#0f1526;border-radius:var(--radius);padding:1rem;display:grid;place-items:center;
  min-height:180px;margin-bottom:1rem;
}
.preview-box canvas{max-height:320px;border-radius:8px;background:
  repeating-conic-gradient(#2a3350 0% 25%, #1c2338 0% 50%) 50%/22px 22px;}
.file-meta{color:var(--muted);font-size:.9rem;margin:.4rem 0 1rem;word-break:break-all}
.opt-row{display:flex;align-items:center;gap:.8rem;margin:.9rem 0;flex-wrap:wrap}
.opt-row label{font-weight:700;font-size:.95rem}
input[type=range]{accent-color:var(--brand);width:200px}
.btn{
  display:inline-block;border:0;cursor:pointer;font-weight:800;font-size:1rem;
  padding:.8rem 1.6rem;border-radius:12px;background:var(--brand);color:#fff;
  transition:background .15s,transform .1s;
}
.btn:hover{background:var(--brand-dark)}
.btn:active{transform:scale(.98)}
.btn.secondary{background:#eef2fa;color:var(--text)}
.btn.secondary:hover{background:#e0e8f8}
.btn:disabled{opacity:.55;cursor:wait}
.actions{display:flex;gap:.7rem;flex-wrap:wrap;margin-top:1rem}
.status{margin-top:.9rem;font-size:.95rem;min-height:1.4em}
.status.ok{color:var(--green);font-weight:600}
.status.err{color:#c81e1e;font-weight:600}
.status.busy{color:var(--brand-dark)}
.privacy-strip{
  display:flex;gap:.6rem;align-items:flex-start;background:var(--green-soft);
  border:1px solid #bfe6d2;border-radius:var(--radius);padding:.9rem 1.1rem;margin:1.2rem 0;
  font-size:.94rem;color:#0b6e4f;
}

/* ---------- faq ---------- */
.faq details{
  border:1px solid var(--line);border-radius:12px;margin:.6rem 0;background:#fff;overflow:hidden;
}
.faq summary{
  cursor:pointer;font-weight:700;padding:.9rem 1.1rem;list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--brand);font-size:1.2rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .faq-a{padding:0 1.1rem 1rem;color:var(--muted)}

/* ---------- breadcrumb / misc ---------- */
.crumbs{font-size:.88rem;color:var(--muted);margin:1.4rem 0 .4rem}
.crumbs a{color:var(--muted)}
.steps{display:grid;gap:.7rem;margin:1rem 0}
.step{
  display:flex;gap:.9rem;align-items:flex-start;background:var(--bg-soft);
  border:1px solid var(--line);border-radius:12px;padding:.85rem 1rem;
}
.step .n{
  flex:0 0 30px;width:30px;height:30px;border-radius:50%;background:var(--brand);
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:.9rem;
}
table.cmp{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.95rem}
table.cmp th,table.cmp td{border:1px solid var(--line);padding:.6rem .8rem;text-align:left}
table.cmp th{background:var(--bg-soft)}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);margin-top:3rem;background:var(--bg-soft)}
.footer-inner{
  max-width:var(--maxw);margin:0 auto;padding:2rem 1.2rem;display:flex;gap:2rem;
  flex-wrap:wrap;justify-content:space-between;color:var(--muted);font-size:.9rem;
}
.footer-inner nav{display:flex;gap:1.2rem;flex-wrap:wrap}

/* ---------- responsive ---------- */
@media (max-width:640px){
  body{font-size:16px}
  .header-inner{flex-wrap:wrap;gap:.5rem;padding-top:.6rem;padding-bottom:.6rem}
  .main-nav{margin-left:0;width:100%;flex-wrap:wrap;gap:.8rem;font-size:.88rem}
  .converter{padding:1.1rem}
  .dropzone{padding:1.8rem .9rem}
  .hero{padding:2.2rem 0 1.4rem}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto!important}
}