/* ============================================================
   ConvierteYa — styles.css (single file, sectioned)
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root{
  --bg:#0f1115;
  --bg-elev:#161922;
  --card:#1b1f2a;
  --border:#2a2f3d;
  --text:#eef0f4;
  --text-dim:#a6acbb;
  --accent:#5b8cff;
  --accent-2:#7ef0c0;
  --danger:#ff6b6b;
  --cream:#f5f7fb;
  --radius:14px;
  --radius-sm:8px;
  --gutter:1.25rem;
  --maxw:1120px;
  --sans:"Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono:"JetBrains Mono", ui-monospace, monospace;

  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:   cubic-bezier(0.7, 0, 0.84, 0);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

@media (prefers-color-scheme: light){
  :root{
    --bg:#f6f7fb; --bg-elev:#ffffff; --card:#ffffff; --border:#e3e6ee;
    --text:#161922; --text-dim:#5b6272; --cream:#161922;
  }
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0}
html{-webkit-text-size-adjust:100%;tab-size:2;scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--text);
  font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
  overscroll-behavior-y:none;
}
img,svg,video{display:block;max-width:100%}
img{height:auto}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
a{color:inherit;text-decoration:none}
p{text-wrap:pretty}
h1,h2,h3,h4{text-wrap:balance;line-height:1.1;letter-spacing:-0.02em}
ul{list-style:none;padding:0}
::selection{background:var(--accent);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

.skip-link{
  position:fixed;top:-100px;left:1rem;padding:.6rem 1rem;
  background:var(--cream);color:var(--bg);z-index:9999;
  border-radius:8px;font-weight:600;
}
.skip-link:focus{top:1rem}

.container{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}

/* ---------- 3. Header ---------- */
.site-header{
  border-bottom:1px solid var(--border);
  background:color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter:blur(8px);
  position:sticky;top:0;z-index:50;
}
.site-header .container{
  display:flex;align-items:center;justify-content:space-between;
  padding-block:.9rem;
}
.logo{display:flex;align-items:center;gap:.5rem;font-weight:800;font-size:1.05rem}
.logo svg{width:26px;height:26px}
.nav-tools{display:flex;gap:1.25rem;font-size:.92rem;font-weight:600;color:var(--text-dim)}
.nav-tools a:hover{color:var(--text)}
.nav-tools{display:none}
@media (min-width:720px){ .nav-tools{display:flex} }

/* ---------- 4. Hero + tool card ---------- */
.tool-hero{padding-block:2.2rem 1.2rem}
.tool-hero h1{font-size:clamp(1.6rem,4.5vw,2.4rem);margin-bottom:.5rem}
.tool-hero .subtitle{color:var(--text-dim);font-size:1.05rem;max-width:60ch}

.tool-card{
  margin-top:1.5rem;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.25rem;
}

.dropzone{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:.6rem;text-align:center;
  border:2px dashed var(--border);
  border-radius:var(--radius-sm);
  padding:2.4rem 1.2rem;
  cursor:pointer;
  transition:border-color .2s var(--ease-out), background .2s var(--ease-out);
}
.dropzone:hover,.dropzone.is-dragover{border-color:var(--accent);background:color-mix(in srgb, var(--accent) 8%, transparent)}
.dropzone svg{width:40px;height:40px;color:var(--accent)}
.dropzone strong{font-size:1.05rem}
.dropzone span{color:var(--text-dim);font-size:.9rem}
.dropzone input[type="file"]{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden}

.tool-options{display:grid;gap:.9rem;margin-top:1rem}
.field{display:flex;flex-direction:column;gap:.35rem}
.field label{font-size:.85rem;font-weight:600;color:var(--text-dim)}
.field select,.field input[type="range"],.field input[type="number"],.field input[type="text"]{
  background:var(--bg-elev);border:1px solid var(--border);color:var(--text);
  border-radius:var(--radius-sm);padding:.55rem .7rem;font:inherit;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.85rem 1.4rem;border-radius:999px;font-weight:700;font-size:1rem;
  background:var(--accent);color:#fff;transition:transform .15s var(--ease-out), filter .15s;
  width:100%;
}
.btn:hover{filter:brightness(1.08)}
.btn:active{transform:scale(.98)}
.btn.secondary{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* progress */
.progress-wrap{margin-top:1rem;display:none}
.progress-bar{height:8px;border-radius:99px;background:var(--bg-elev);overflow:hidden;border:1px solid var(--border)}
.progress-bar > i{display:block;height:100%;width:0%;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .2s var(--ease-out)}
.progress-label{font-size:.85rem;color:var(--text-dim);margin-top:.4rem}

/* result */
.result-box{
  display:none;margin-top:1rem;padding:1rem;border-radius:var(--radius-sm);
  border:1px solid var(--border);background:var(--bg-elev);
  align-items:center;gap:.8rem;flex-wrap:wrap;
}
.result-box .stat{font-size:.85rem;color:var(--text-dim)}
.result-box .stat b{color:var(--accent-2)}

.error-box{
  display:none;margin-top:1rem;padding:1rem;border-radius:var(--radius-sm);
  background:color-mix(in srgb, var(--danger) 12%, transparent);
  border:1px solid color-mix(in srgb, var(--danger) 40%, transparent);
  color:var(--text);font-size:.92rem;
}

/* state machine visibility, driven by [data-state] on .tool-card */
.tool-card[data-state="idle"] .progress-wrap,
.tool-card[data-state="idle"] .result-box,
.tool-card[data-state="idle"] .error-box{display:none}

.tool-card[data-state="loading-engine"] .progress-wrap,
.tool-card[data-state="working"] .progress-wrap{display:block}

.tool-card[data-state="done"] .result-box{display:flex}
.tool-card[data-state="error"] .error-box{display:block}

.tool-card[data-state="working"] .dropzone,
.tool-card[data-state="loading-engine"] .dropzone{opacity:.55;pointer-events:none}

.reset-link{display:inline-block;margin-top:.9rem;font-size:.9rem;color:var(--text-dim);text-decoration:underline}
.reset-link:hover{color:var(--text)}

/* privacy + limits */
.privacy-badge{
  margin-top:1rem;display:flex;gap:.6rem;align-items:flex-start;
  font-size:.88rem;color:var(--text-dim);
}
.privacy-badge svg{width:18px;height:18px;flex:none;margin-top:2px;color:var(--accent-2)}
.limits-note{font-size:.82rem;color:var(--text-dim);margin-top:.35rem}

/* file list (batch) */
.file-row{
  display:flex;align-items:center;gap:.7rem;padding:.6rem 0;
  border-bottom:1px solid var(--border);font-size:.9rem;
}
.file-row:last-child{border-bottom:none}
.file-row .name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-row .mini-bar{width:80px;height:5px;border-radius:99px;background:var(--bg-elev);overflow:hidden}
.file-row .mini-bar > i{display:block;height:100%;width:0;background:var(--accent)}

/* ---------- 5. Ad slots (placeholders only) ---------- */
.ad-slot{
  margin-block:1.6rem;min-height:100px;border:1px dashed var(--border);
  border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;
  color:var(--text-dim);font-size:.8rem;letter-spacing:.04em;text-transform:uppercase;
  background:color-mix(in srgb, var(--card) 60%, transparent);
}
.ad-slot--leaderboard{min-height:90px}
.ad-slot--incontent{min-height:250px}

/* ---------- 6. Content sections ---------- */
.section{padding-block:1.6rem}
.section h2{font-size:clamp(1.25rem,3vw,1.6rem);margin-bottom:.8rem}
.steps{display:grid;gap:1rem;grid-template-columns:1fr}
@media (min-width:720px){ .steps{grid-template-columns:repeat(3,1fr)} }
.step{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:1.1rem}
.step .num{
  display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;
  border-radius:50%;background:var(--accent);color:#fff;font-weight:800;font-size:.85rem;margin-bottom:.6rem;
}
.step h3{font-size:1rem;margin-bottom:.3rem}
.step p{font-size:.9rem;color:var(--text-dim)}

.seo-copy{color:var(--text-dim);max-width:70ch;font-size:.98rem}
.seo-copy p + p{margin-top:.9rem}

.faq details{
  border-bottom:1px solid var(--border);padding-block:.9rem;
}
.faq summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq p{color:var(--text-dim);margin-top:.6rem;font-size:.92rem}

.more-tools{display:grid;gap:.9rem;grid-template-columns:1fr}
@media (min-width:540px){ .more-tools{grid-template-columns:repeat(2,1fr)} }
@media (min-width:960px){ .more-tools{grid-template-columns:repeat(4,1fr)} }
.tool-card-link{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:1rem;transition:transform .15s var(--ease-out), border-color .15s;
}
.tool-card-link:hover{transform:translateY(-3px);border-color:var(--accent)}
.tool-card-link svg{width:24px;height:24px;color:var(--accent);margin-bottom:.5rem}
.tool-card-link h3{font-size:.95rem;margin-bottom:.25rem}
.tool-card-link p{font-size:.82rem;color:var(--text-dim)}

/* desktop: reserve a right rail next to the in-content ad on wide screens */
.with-rail{display:grid;gap:1.4rem;grid-template-columns:1fr}
@media (min-width:960px){
  .with-rail{grid-template-columns:1fr 300px;align-items:start}
  .rail{position:sticky;top:5.2rem}
}

/* ---------- 7. Home hero (tool grid) ---------- */
.home-hero{padding-block:2.4rem 1rem;text-align:center}
.home-hero h1{font-size:clamp(1.8rem,5vw,2.8rem)}
.home-hero p{color:var(--text-dim);max-width:56ch;margin:.8rem auto 0}
.home-grid{display:grid;gap:1rem;grid-template-columns:1fr;margin-top:2rem}
@media (min-width:540px){ .home-grid{grid-template-columns:repeat(2,1fr)} }
@media (min-width:960px){ .home-grid{grid-template-columns:repeat(3,1fr)} }
.home-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:1.4rem;text-align:left;transition:transform .15s var(--ease-out), border-color .15s;
}
.home-card:hover{transform:translateY(-4px);border-color:var(--accent)}
.home-card svg{width:30px;height:30px;color:var(--accent);margin-bottom:.8rem}
.home-card h2{font-size:1.05rem;margin-bottom:.35rem}
.home-card p{font-size:.88rem;color:var(--text-dim)}

/* ---------- 8. Footer ---------- */
.site-footer{border-top:1px solid var(--border);margin-top:3rem;padding-block:1.6rem;color:var(--text-dim);font-size:.85rem}
.site-footer .container{display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center}
.footer-links{display:flex;gap:1rem;flex-wrap:wrap}
.footer-links a:hover{color:var(--text)}
.footer-credits{width:100%;margin-top:.8rem;font-size:.78rem;opacity:.75}

/* ---------- 9. Interstitial dialog ---------- */
dialog.interstitial{
  border:1px solid var(--border);border-radius:var(--radius);
  background:var(--card);color:var(--text);padding:0;max-width:420px;width:92vw;
}
dialog.interstitial::backdrop{background:rgba(0,0,0,.55)}
.interstitial-inner{padding:1.2rem}
.interstitial-inner .ad-slot{margin-block:.8rem 1.1rem}
.interstitial-close{
  display:flex;justify-content:flex-end;padding:.6rem .6rem 0;
}
.interstitial-close button{
  width:32px;height:32px;border-radius:50%;background:var(--bg-elev);
  border:1px solid var(--border);font-size:1.1rem;line-height:1;
}

/* ---------- 10. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* ---------- 11. View transitions ---------- */
@view-transition{ navigation: auto; }
::view-transition-old(root){animation:fadeOutUp .4s var(--ease-out)}
::view-transition-new(root){animation:fadeInUp .4s var(--ease-out)}
@keyframes fadeOutUp{ to{opacity:0;transform:translateY(-10px)} }
@keyframes fadeInUp{ from{opacity:0;transform:translateY(10px)} }