/* DownloaderxAI - mobile-first, no framework. Supports evergreen Chrome, Safari (iOS 14+), Firefox, Edge, Samsung Internet. */
:root{
  --bg:#0a0d16;--bg2:#111626;--card:#151b2e;--line:#232b45;
  --text:#eef1f8;--muted:#9aa3b8;--accent:#ff2d55;--accent2:#ff7a1a;
  --ok:#22c55e;--warn:#f59e0b;--err:#ef4444;
  --grad:linear-gradient(90deg,var(--accent),var(--accent2));
  --radius:14px;--max:1080px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased}
img,svg,video{max-width:100%;display:block}
a{color:#ff6b86;text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 18px}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;color:#000;padding:8px;z-index:99}

/* header */
.hdr{position:sticky;top:0;z-index:40;background:rgba(10,13,22,.85);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:800;font-size:19px;letter-spacing:-.2px}
.brand:hover{text-decoration:none}
.brand img{width:34px;height:34px}
.brand b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav{display:flex;gap:4px}
.nav a{color:var(--muted);padding:8px 12px;border-radius:10px;font-weight:600;font-size:15px}
.nav a:hover,.nav a[aria-current]{color:var(--text);background:var(--bg2);text-decoration:none}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--text);border-radius:10px;padding:7px 11px;font-size:18px}
@media (max-width:760px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;top:62px;left:0;right:0;flex-direction:column;background:var(--bg2);border-bottom:1px solid var(--line);padding:8px 12px}
  .nav.open{display:flex}
  .nav a{padding:12px}
}

/* hero + tool */
.hero{padding:48px 0 28px;text-align:center;background:radial-gradient(1000px 400px at 50% -10%,rgba(255,45,85,.22),transparent 70%)}
.hero h1{font-size:clamp(28px,5vw,46px);line-height:1.15;margin:0 0 12px;letter-spacing:-.5px}
.hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{color:var(--muted);max-width:640px;margin:0 auto 26px;font-size:17px}
.tool{max-width:760px;margin:0 auto}
.bar{display:flex;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:8px;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.bar:focus-within{border-color:var(--accent)}
.bar input{flex:1;min-width:0;background:transparent;border:0;color:var(--text);font-size:16px;padding:12px 10px;outline:none}
.bar input::placeholder{color:#6b7490}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:12px 20px;font:700 16px var(--font);cursor:pointer;color:#fff;background:var(--grad);white-space:nowrap;-webkit-tap-highlight-color:transparent;transition:transform .08s,filter .2s}
.btn:hover{filter:brightness(1.08);text-decoration:none}
.btn:active{transform:scale(.97)}
.btn[disabled]{opacity:.6;cursor:wait}
.btn.ghost{background:var(--bg2);border:1px solid var(--line);color:var(--text)}
.btn.sm{padding:9px 14px;font-size:14px;border-radius:10px}
@media (max-width:560px){
  .bar{flex-wrap:wrap}
  .bar input{flex-basis:100%}
  .bar .btn{flex:1}
}
.hint{color:var(--muted);font-size:13px;margin-top:10px}
.trust{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 18px;margin-top:16px;color:var(--muted);font-size:14px}
.trust span::before{content:"✓ ";color:var(--ok);font-weight:800}

/* result */
.result{max-width:760px;margin:22px auto 0;text-align:left}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.vid{display:grid;grid-template-columns:200px 1fr;gap:16px}
.vid .thumb{position:relative;border-radius:10px;overflow:hidden;background:#000;aspect-ratio:16/9}
.vid .thumb img{width:100%;height:100%;object-fit:cover}
.vid .dur{position:absolute;right:6px;bottom:6px;background:rgba(0,0,0,.75);font-size:12px;padding:2px 6px;border-radius:6px}
.vid h2{font-size:18px;margin:0 0 6px;line-height:1.35;word-break:break-word}
.vid .meta{color:var(--muted);font-size:13px}
@media (max-width:560px){.vid{grid-template-columns:1fr}}
table.fmt{width:100%;border-collapse:collapse;margin-top:14px}
table.fmt th,table.fmt td{padding:10px 8px;border-top:1px solid var(--line);text-align:left;font-size:15px}
table.fmt th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.06em;border-top:0}
table.fmt td.act{text-align:right;white-space:nowrap}
table.fmt td.act .btn{margin-left:6px}
@media (max-width:560px){table.fmt td.act .btn.ghost{display:none}}
.badge{display:inline-block;font-size:11px;font-weight:800;padding:2px 7px;border-radius:999px;background:rgba(34,197,94,.15);color:var(--ok);margin-left:6px}
.alert{border-radius:12px;padding:14px 16px;margin-top:14px;font-size:15px}
.alert.err{background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.35)}
.alert.info{background:rgba(245,158,11,.1);border:1px solid rgba(245,158,11,.35)}
.preview{margin-top:14px;border-radius:12px;overflow:hidden;background:#000}
.spinner{width:18px;height:18px;border:3px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.progress{height:8px;background:var(--bg2);border-radius:99px;overflow:hidden;margin-top:10px}
.progress i{display:block;height:100%;width:0;background:var(--grad);transition:width .2s}

/* sections */
section.blk{padding:46px 0;border-top:1px solid var(--line)}
section.blk h2{font-size:clamp(22px,3.4vw,30px);margin:0 0 8px;letter-spacing:-.3px}
section.blk p.lead{color:var(--muted);margin:0 0 26px;max-width:720px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.feat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.feat .ic{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(255,45,85,.12);font-size:20px;margin-bottom:10px}
.feat h3{margin:0 0 6px;font-size:17px}
.feat p{margin:0;color:var(--muted);font-size:15px}
.steps{counter-reset:s;display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));padding:0;list-style:none}
.steps li{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 20px 20px 64px;position:relative}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:18px;top:18px;width:32px;height:32px;border-radius:50%;background:var(--grad);display:grid;place-items:center;font-weight:800}
.steps h3{margin:0 0 4px;font-size:17px}
.steps p{margin:0;color:var(--muted);font-size:15px}
details.faq{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:0 18px;margin-bottom:10px}
details.faq summary{cursor:pointer;padding:16px 0;font-weight:700;list-style:none}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";float:right;color:var(--accent);font-size:20px;line-height:1}
details.faq[open] summary::after{content:"–"}
details.faq p{margin:0 0 16px;color:var(--muted)}

/* article / prose */
.crumbs{font-size:13px;color:var(--muted);padding:18px 0 0}
.crumbs a{color:var(--muted)}
.prose{max-width:740px;margin:0 auto;padding:10px 0 50px}
.prose h1{font-size:clamp(28px,4.5vw,40px);line-height:1.2;letter-spacing:-.4px;margin:14px 0 10px}
.prose .byline{color:var(--muted);font-size:14px;margin-bottom:24px}
.prose h2{font-size:24px;margin:36px 0 10px;letter-spacing:-.2px}
.prose h3{font-size:19px;margin:26px 0 8px}
.prose p,.prose li{color:#d6dbe8}
.prose blockquote{margin:20px 0;padding:12px 18px;border-left:4px solid var(--accent);background:var(--bg2);border-radius:0 10px 10px 0;color:var(--text)}
.prose code{background:var(--bg2);padding:2px 6px;border-radius:6px;font-size:.92em}
.prose table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line);padding:9px 10px;text-align:left}
.prose th{background:var(--bg2)}
.tldr{background:linear-gradient(135deg,rgba(255,45,85,.12),rgba(255,122,26,.08));border:1px solid rgba(255,45,85,.35);border-radius:12px;padding:16px 18px;margin:18px 0}
.tldr strong{display:block;margin-bottom:4px}
.cta{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px;text-align:center;margin:30px 0}
.cta p{margin:0 0 12px}
.posts{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.post{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column}
.post h3{margin:0 0 6px;font-size:18px;line-height:1.35}
.post h3 a{color:var(--text)}
.post p{color:var(--muted);font-size:15px;margin:0 0 12px;flex:1}
.post .tag{font-size:12px;color:var(--accent2);font-weight:700;text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px}

/* player page */
.drop{border:2px dashed var(--line);border-radius:16px;padding:36px 18px;text-align:center;background:var(--card);cursor:pointer}
.drop.over{border-color:var(--accent);background:rgba(255,45,85,.06)}
.playlist{list-style:none;padding:0;margin:14px 0 0}
.playlist li{display:flex;justify-content:space-between;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;margin-bottom:8px;cursor:pointer;background:var(--bg2)}
.playlist li.on{border-color:var(--accent)}

/* bookmarklet */
.bm{display:inline-flex;align-items:center;gap:8px;padding:14px 22px;border-radius:12px;background:var(--grad);color:#fff;font-weight:800;cursor:grab;font-size:17px}
.bm:hover{text-decoration:none}
pre.code{background:#05070d;border:1px solid var(--line);border-radius:10px;padding:12px;overflow:auto;font-size:12px;color:#c7d2fe;white-space:pre-wrap;word-break:break-all;max-height:160px}

/* footer */
.ftr{border-top:1px solid var(--line);padding:36px 0 26px;color:var(--muted);font-size:14px;background:var(--bg2)}
.ftr .cols{display:grid;gap:22px;grid-template-columns:2fr 1fr 1fr 1fr}
.ftr h4{color:var(--text);margin:0 0 10px;font-size:14px}
.ftr ul{list-style:none;padding:0;margin:0}
.ftr li{margin:6px 0}
.ftr a{color:var(--muted)}
.ftr .legal{border-top:1px solid var(--line);margin-top:24px;padding-top:16px;font-size:12px;line-height:1.6}
@media (max-width:760px){.ftr .cols{grid-template-columns:1fr 1fr}}

/* age gate */
.gate{position:fixed;inset:0;z-index:100;background:rgba(5,7,13,.94);display:none;align-items:center;justify-content:center;padding:18px}
.gate.show{display:flex}
.gate .box{max-width:440px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px;text-align:center}
.gate h2{margin:6px 0 8px}
.gate p{color:var(--muted);font-size:15px}
.gate .row{display:flex;gap:10px;justify-content:center;margin-top:18px;flex-wrap:wrap}
.gate .age{font-size:34px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#1f2937;color:#fff;padding:10px 16px;border-radius:10px;font-size:14px;z-index:90;opacity:0;transition:opacity .25s;pointer-events:none}
.toast.show{opacity:1}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}