/* FileFlow — site styles */
:root{
  --bg:#0B0F1A;--bg-soft:#0F1626;--surface:#141C2E;--surface-2:#1A2438;
  --border:#243049;--border-soft:#1d2740;--text:#EAF0FA;--muted:#8794AD;--muted-dim:#5a6685;
  --brand:#4E7DF6;--brand-2:#56C6F0;--ok:#46D6A6;--warn:#F6B24E;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--text);line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(11,15,26,.74);backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--border-soft)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:750;letter-spacing:-.01em;font-size:18px}
.logo{width:30px;height:30px;flex:none;display:grid;place-items:center;border-radius:9px;background:linear-gradient(140deg,var(--brand),var(--brand-2))}
.logo img,.logo svg{width:18px;height:18px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{color:var(--muted);font-size:14px;font-weight:500;transition:color .15s}
.nav-links a:hover{color:var(--text)}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);font-size:14px;font-weight:600;cursor:pointer;border-radius:9px;padding:9px 16px;border:1px solid transparent;transition:.16s}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:#6a92f8;transform:translateY(-1px)}
.btn-ghost{border-color:var(--border);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:#33425f;background:var(--surface)}
.btn:focus-visible,.nav-links a:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}

/* language switcher */
.lang{display:inline-flex;align-items:center;gap:1px;border:1px solid var(--border);border-radius:8px;padding:2px}
.lang a{font-size:12.5px;font-weight:600;color:var(--muted);padding:4px 9px;border-radius:6px;line-height:1;transition:color .15s,background .15s}
.lang a.on{background:var(--surface-2);color:var(--text)}
.lang a:hover{color:var(--text)}

/* hero */
.hero{position:relative;padding:84px 0 60px;text-align:center}
.hero::before{content:"";position:absolute;inset:-10% 0 auto 0;height:600px;z-index:-1;
  background:
    radial-gradient(680px 340px at 50% 8%, rgba(78,125,246,.18), transparent 70%),
    radial-gradient(420px 260px at 78% 0%, rgba(86,198,240,.10), transparent 72%),
    linear-gradient(180deg, rgba(11,15,26,.62), rgba(11,15,26,.97)),
    url("/assets/hero-bg.jpg") center top / cover no-repeat}
.pill{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--brand-2);border:1px solid var(--border);background:var(--surface);border-radius:999px;padding:6px 14px;margin-bottom:26px}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(70,214,166,.18)}
h1{font-size:clamp(36px,6vw,60px);line-height:1.05;font-weight:800;letter-spacing:-.035em;max-width:16ch;margin:0 auto}
h1 .grad{background:linear-gradient(110deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{margin:22px auto 0;font-size:clamp(16px,2vw,19px);color:var(--muted);max-width:56ch}

/* converter widget */
.conv{margin:42px auto 0;max-width:600px;border:1px solid var(--border);border-radius:18px;background:linear-gradient(180deg,var(--surface),var(--bg-soft));box-shadow:0 30px 70px -34px rgba(0,0,0,.75);overflow:hidden;text-align:left}
.conv-top{padding:14px 20px;border-bottom:1px solid var(--border-soft);display:flex;align-items:center;justify-content:space-between}
.conv-top .t{font-size:13px;color:var(--muted);font-weight:600}
.conv-top .lk{font-family:var(--mono);font-size:11px;color:var(--ok);display:inline-flex;gap:6px;align-items:center}
.drop{margin:20px;border:1.5px dashed var(--border);border-radius:14px;padding:38px 20px;text-align:center;background:rgba(78,125,246,.04);transition:.18s}
.drop:hover{border-color:var(--brand);background:rgba(78,125,246,.07)}
.drop .ic{width:52px;height:52px;border-radius:14px;margin:0 auto 14px;display:grid;place-items:center;background:rgba(78,125,246,.12);border:1px solid rgba(78,125,246,.22)}
.drop .ic svg{width:26px;height:26px;color:var(--brand)}
.drop h3{font-size:16px;font-weight:700;margin-bottom:6px}
.drop p{font-size:13.5px;color:var(--muted)}
.conv-foot{display:flex;flex-wrap:wrap;gap:10px 18px;align-items:center;padding:0 20px 20px;font-size:12.5px;color:var(--muted-dim)}
.fmt{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);background:var(--surface-2);border:1px solid var(--border-soft);border-radius:7px;padding:4px 9px;color:var(--muted)}
.arrow{color:var(--brand-2)}

/* trust strip */
.specs{border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft);background:#0C1322;margin-top:60px}
.specs .wrap{display:flex;flex-wrap:wrap;gap:10px 40px;justify-content:center;padding:18px 24px}
.specs span{font-family:var(--mono);font-size:12.5px;letter-spacing:.03em;color:var(--muted)}
.specs b{color:var(--text);font-weight:600}

/* sections */
section.block{padding:84px 0}
.head{max-width:60ch;margin:0 auto 46px;text-align:center}
.head .pill{margin-bottom:16px}
.head h2{font-size:clamp(26px,3.4vw,36px);font-weight:800;letter-spacing:-.03em;line-height:1.1}
.head p{margin-top:14px;color:var(--muted);font-size:16.5px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{border:1px solid var(--border-soft);background:var(--surface);border-radius:16px;padding:26px;transition:.18s}
.card:hover{border-color:#30405e;transform:translateY(-3px);background:var(--surface-2)}
.card .ic{width:42px;height:42px;border-radius:11px;display:grid;place-items:center;margin-bottom:18px;background:rgba(86,198,240,.10);border:1px solid rgba(86,198,240,.20)}
.card .ic svg{width:21px;height:21px;color:var(--brand-2)}
.card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px}

/* see it in action (mockup) */
.shot-frame{border:1px solid var(--border);border-radius:16px;overflow:hidden;background:var(--surface);box-shadow:0 30px 80px -42px rgba(0,0,0,.85);max-width:940px;margin:0 auto}
.shot-frame img{display:block;width:100%;height:auto}
.figcap{margin-top:12px;color:var(--muted-dim);font-family:var(--mono);font-size:12.5px;text-align:center}

/* formats */
.fmts{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.fcat{border:1px solid var(--border-soft);background:var(--surface);border-radius:14px;padding:20px}
.fcat h4{font-size:13px;letter-spacing:.04em;text-transform:uppercase;color:var(--brand-2);margin-bottom:12px;font-family:var(--mono)}
.fcat .row{font-family:var(--mono);font-size:13px;color:var(--muted);line-height:2}

/* cta */
.band-inner{margin:0 24px;border:1px solid var(--border);border-radius:22px;padding:54px 40px;text-align:center;background:radial-gradient(560px 220px at 50% -20%, rgba(78,125,246,.16), transparent 70%),var(--surface)}
.band-inner h2{font-size:clamp(24px,3.2vw,34px);font-weight:800;letter-spacing:-.03em}
.band-inner p{color:var(--muted);margin:14px auto 28px;max-width:48ch;font-size:16px}

/* footer */
footer{border-top:1px solid var(--border-soft);margin-top:84px;padding:44px 0 56px}
.foot{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:flex-start}
.foot-brand{max-width:300px}
.foot-brand p{color:var(--muted-dim);font-size:13.5px;margin-top:12px}
.foot-cols{display:flex;gap:56px;flex-wrap:wrap}
.fcol h4{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-dim);margin-bottom:14px;font-family:var(--mono)}
.fcol a{display:block;color:var(--muted);font-size:14px;margin-bottom:9px;transition:color .15s}
.fcol a:hover{color:var(--text)}
.fbot{margin-top:38px;padding-top:22px;border-top:1px solid var(--border-soft);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center}
.fbot span{font-family:var(--mono);font-size:12.5px;color:var(--muted-dim)}

.fade{opacity:0;transform:translateY(14px);animation:rise .7s cubic-bezier(.2,.7,.2,1) forwards}
.fade.d1{animation-delay:.06s}.fade.d2{animation-delay:.12s}.fade.d3{animation-delay:.2s}
@keyframes rise{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.fade{animation:none;opacity:1;transform:none}html{scroll-behavior:auto}}

@media (max-width:840px){.grid{grid-template-columns:1fr}.fmts{grid-template-columns:repeat(2,1fr)}.nav-links a:not(.btn):not(.lang a){display:none}.nav-links .lang,.nav-links .lang a{display:inline-flex}}
@media (max-width:520px){.hero{padding:60px 0 48px}section.block{padding:60px 0}.band-inner{padding:40px 22px}.fmts{grid-template-columns:1fr}}

/* format badges — one icon per supported format (see gen-format-icons.js) */
.fcat .fgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:4px}
.fcat .fgrid img{width:100%;height:auto;max-width:40px;justify-self:center;opacity:.92;transition:opacity .15s,transform .15s}
.fcat .fgrid img:hover{opacity:1;transform:translateY(-2px)}
@media (max-width:640px){.fcat .fgrid{grid-template-columns:repeat(4,1fr);gap:8px}}