*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#050e1f;
  --bg-card:#081729;
  --bg-card2:#0c1f36;
  --brand:#29ABE2;
  --brand-dark:#1a8bbf;
  --brand-dim:rgba(41,171,226,.12);
  --brand-glow:rgba(41,171,226,.25);
  --text:#ffffff;
  --text-sub:#b0c4d8;
  --text-muted:#6b85a0;
  --border:#1a3555;
  --border-light:#22426a;
  --success:#22c55e;
  --radius:14px;
}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(41,171,226,.15) 0%, transparent 70%);
}

/* ── NAV ───────────────────────────────────────────── */
nav{
  position:sticky;top:0;z-index:100;
  background:rgba(5,14,31,.85);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  padding:0 24px;
  height:64px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.nav-logo img{height:32px;width:auto}
.nav-logo-text{
  font-size:1.25rem;font-weight:800;
  background:linear-gradient(135deg,#fff 0%,var(--brand) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  letter-spacing:-.02em;
}
.nav-badge{
  font-size:.6rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  background:var(--brand-dim);color:var(--brand);
  border:1px solid rgba(41,171,226,.35);
  padding:3px 9px;border-radius:999px;
}
.nav-right{display:flex;align-items:center;gap:8px}
.nav-link{
  color:var(--text-sub);font-size:.82rem;font-weight:500;
  text-decoration:none;padding:6px 12px;border-radius:8px;
  transition:all .18s;white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-cta{
  background:var(--brand);color:#fff;
  font-size:.8rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  padding:8px 18px;border-radius:8px;text-decoration:none;
  transition:all .2s;white-space:nowrap;
}
.nav-cta:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 4px 16px var(--brand-glow)}
@media(max-width:600px){.nav-link{display:none}}

/* ── HERO HEADER ───────────────────────────────────── */
.hero{
  text-align:center;
  padding:52px 16px 36px;
}
.tool-tag{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-dim);color:var(--brand);
  border:1px solid rgba(41,171,226,.3);
  font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  padding:5px 14px;border-radius:999px;margin-bottom:18px;
}
.tool-tag::before{content:'●';font-size:.45rem;animation:blink 2s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{
  font-size:clamp(2rem,5vw,3rem);font-weight:800;line-height:1.1;
  letter-spacing:-.03em;margin-bottom:14px;
}
.hero h1 span{color:var(--brand)}
.hero p{color:var(--text-sub);font-size:1rem;max-width:500px;margin:0 auto;line-height:1.7}

/* ── CONTAINER ─────────────────────────────────────── */
.wrap{max-width:840px;margin:0 auto;padding:0 16px 60px;display:flex;flex-direction:column;gap:18px}

/* ── CARDS ─────────────────────────────────────────── */
.card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
}
.card-title{
  font-size:.7rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);margin-bottom:18px;
  display:flex;align-items:center;gap:8px;
}
.card-title::before{content:'';width:3px;height:14px;background:var(--brand);border-radius:2px}

/* ── TEXTURE OPTIONS ───────────────────────────────── */
.tex-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.tex-opt{
  background:var(--bg-card2);
  border:2px solid var(--border);
  border-radius:12px;padding:18px 12px;
  text-align:center;cursor:pointer;
  transition:all .2s;user-select:none;
  position:relative;overflow:hidden;
}
.tex-opt::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(41,171,226,.08),transparent);
  opacity:0;transition:opacity .2s;
}
.tex-opt:hover::before,.tex-opt.sel::before{opacity:1}
.tex-opt:hover{border-color:var(--brand)}
.tex-opt.sel{
  border-color:var(--brand);
  box-shadow:0 0 0 1px var(--brand), 0 0 24px var(--brand-glow);
}
.tex-opt .sz{font-size:1.1rem;font-weight:700;color:var(--brand);margin-bottom:5px}
.tex-opt .ds{font-size:.7rem;color:var(--text-muted);line-height:1.5}
.tex-opt .tg{
  display:inline-block;font-size:.58rem;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;background:var(--brand-dim);color:var(--brand);
  padding:2px 8px;border-radius:4px;margin-top:7px;
  border:1px solid rgba(41,171,226,.25);
}

/* ── SETTINGS ROWS ─────────────────────────────────── */
.srow{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 0;border-bottom:1px solid var(--border);
}
.srow:last-child{border-bottom:none}
.slabel span{font-size:.88rem;font-weight:500}
.slabel small{display:block;color:var(--text-muted);font-size:.74rem;margin-top:3px}
.qval{font-size:1.1rem;font-weight:700;color:var(--brand)}
.slider-wrap{display:flex;align-items:center;gap:10px}
.slider-wrap input[type=range]{
  -webkit-appearance:none;appearance:none;
  width:120px;height:5px;
  background:var(--border-light);border-radius:999px;outline:none;cursor:pointer;
}
.slider-wrap input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;appearance:none;
  width:16px;height:16px;border-radius:50%;
  background:var(--brand);border:2px solid #fff;
  box-shadow:0 0 6px var(--brand-glow);cursor:pointer;
}
.slider-wrap input[type=range]::-moz-range-thumb{
  width:16px;height:16px;border-radius:50%;
  background:var(--brand);border:2px solid #fff;cursor:pointer;
}

/* ── TOGGLE ────────────────────────────────────────── */
.toggle{position:relative;width:46px;height:25px;flex-shrink:0}
.toggle input{opacity:0;width:0;height:0}
.tslider{
  position:absolute;inset:0;background:#1a3555;
  border-radius:999px;cursor:pointer;transition:.2s;
  border:1px solid var(--border-light);
}
.tslider::before{
  content:'';position:absolute;
  width:19px;height:19px;left:2px;top:2px;
  background:#fff;border-radius:50%;transition:.2s;
}
.toggle input:checked+.tslider{background:var(--brand);border-color:var(--brand)}
.toggle input:checked+.tslider::before{transform:translateX(21px)}

/* ── DROP ZONE ─────────────────────────────────────── */
.dropzone{
  background:var(--bg-card);
  border:2px dashed var(--border);
  border-radius:var(--radius);
  padding:56px 24px;text-align:center;cursor:pointer;
  transition:all .25s;position:relative;
}
.dropzone:hover,.dropzone.over{
  border-color:var(--brand);
  background:rgba(41,171,226,.04);
}
.dropzone.over{box-shadow:0 0 40px rgba(41,171,226,.15)}
.dropzone input[type=file]{
  position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%;
}
.dico{
  width:62px;height:62px;
  background:linear-gradient(135deg,rgba(41,171,226,.2),rgba(41,171,226,.05));
  border:1px solid rgba(41,171,226,.3);
  border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 18px;font-size:28px;
}
.dropzone h3{font-size:1.1rem;font-weight:600;margin-bottom:7px}
.dropzone p{color:var(--text-sub);font-size:.85rem}
.dropzone .hint{
  margin-top:12px;font-size:.73rem;color:var(--text-muted);
  display:flex;align-items:center;justify-content:center;gap:6px;
}
.dropzone .hint::before{content:'ℹ';color:var(--brand);font-size:.8rem}

/* ── STATUS ────────────────────────────────────────── */
.status-card{display:none}
.status-card.vis{display:block}
.sth{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.spin{
  width:22px;height:22px;
  border:3px solid var(--border-light);
  border-top-color:var(--brand);
  border-radius:50%;
  animation:spin .75s linear infinite;flex-shrink:0;
}
@keyframes spin{to{transform:rotate(360deg)}}
.sstep{font-weight:600;font-size:.95rem}
.stxt{font-size:.8rem;color:var(--text-muted);margin-top:3px}
.pbar-wrap{
  height:5px;background:var(--bg-card2);
  border-radius:999px;overflow:hidden;
}
.pbar{
  height:100%;
  background:linear-gradient(90deg,var(--brand),#0ea5e9);
  border-radius:999px;
  transition:width .35s ease;width:0%;
  box-shadow:0 0 10px var(--brand-glow);
}

/* ── RESULTS ───────────────────────────────────────── */
.res-card{display:none}
.res-card.vis{display:block}
.srow2{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:center;margin-bottom:20px}
.sbox{
  background:var(--bg-card2);border:1px solid var(--border);
  border-radius:12px;padding:18px;text-align:center;
}
.sbox .lbl{
  font-size:.66rem;text-transform:uppercase;letter-spacing:.12em;
  color:var(--text-muted);margin-bottom:7px;
}
.sbox .val{font-size:1.5rem;font-weight:700}
.sbox.orig .val{color:var(--text-sub)}
.sbox.optm{border-color:rgba(34,197,94,.3);background:rgba(34,197,94,.05)}
.sbox.optm .val{color:var(--success)}
.arr{text-align:center;color:var(--brand);font-size:1.3rem}
.rbadge{text-align:center;margin-bottom:22px}
.rbadge .pct{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(34,197,94,.1);color:var(--success);
  border:1px solid rgba(34,197,94,.3);
  padding:10px 20px;border-radius:999px;
  font-weight:700;font-size:.9rem;
}

/* ── BUTTONS ───────────────────────────────────────── */
.dlbtn{
  display:block;width:100%;padding:16px;
  background:var(--brand);color:#fff;
  font-family:'Inter',sans-serif;
  font-size:.95rem;font-weight:700;
  border:none;border-radius:10px;cursor:pointer;
  transition:all .2s;letter-spacing:.04em;text-transform:uppercase;
}
.dlbtn:hover{
  background:var(--brand-dark);
  transform:translateY(-1px);
  box-shadow:0 6px 24px var(--brand-glow);
}
.rstbtn{
  display:block;width:100%;padding:12px;
  background:transparent;color:var(--text-muted);
  font-family:'Inter',sans-serif;font-size:.83rem;
  border:1px solid var(--border);border-radius:10px;
  cursor:pointer;transition:all .2s;margin-top:10px;
}
.rstbtn:hover{border-color:var(--brand);color:var(--brand)}

/* ── ERROR ─────────────────────────────────────────── */
.errmsg{
  display:none;
  background:rgba(239,68,68,.08);
  border:1px solid rgba(239,68,68,.3);
  color:#f87171;padding:13px 16px;
  border-radius:10px;font-size:.84rem;
}
.errmsg.vis{display:block}

/* ── FOOTER ────────────────────────────────────────── */
footer{
  border-top:1px solid var(--border);
  background:rgba(5,14,31,.6);
  padding:32px 24px;
  margin-top:40px;
}
.foot-inner{
  max-width:840px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:16px;
}
.foot-logo{display:flex;align-items:center;gap:8px;text-decoration:none}
.foot-logo img{height:26px;opacity:.8}
.foot-logo span{font-size:1rem;font-weight:700;color:var(--text-sub);letter-spacing:-.01em}
.foot-info{font-size:.73rem;color:var(--text-muted);line-height:1.7;text-align:right}
.foot-info a{color:var(--brand);text-decoration:none}
.foot-info a:hover{text-decoration:underline}
.foot-note{
  max-width:840px;margin:14px auto 0;
  font-size:.68rem;color:var(--text-muted);
  text-align:center;
  padding-top:14px;border-top:1px solid var(--border);
}

/* ── RESPONSIVE ────────────────────────────────────── */

/* Tablet */
@media(max-width:768px){
  nav{padding:0 16px;height:56px}
  .nav-logo img{height:26px}
  .nav-logo-text{font-size:1.1rem}
  .nav-badge{display:none}

  .hero{padding:36px 16px 24px}
  .hero p{font-size:.9rem}

  .wrap{padding:0 12px 48px;gap:14px}
  .card{padding:18px}

  .tex-opt{padding:14px 10px}
  .tex-opt .sz{font-size:1rem}

  .slider-wrap input[type=range]{width:100px}

  .dropzone{padding:40px 16px}
  .dico{width:52px;height:52px;font-size:24px;margin-bottom:14px}

  footer{padding:24px 16px}
}

/* Mobile */
@media(max-width:520px){
  .nav-cta{font-size:.72rem;padding:7px 13px}

  .hero h1{font-size:1.7rem}
  .hero p{font-size:.85rem}

  .tex-grid{grid-template-columns:1fr}

  .srow{flex-wrap:wrap;gap:10px}
  .slider-wrap{width:100%}
  .slider-wrap input[type=range]{flex:1}

  .srow2{grid-template-columns:1fr;gap:10px}
  .arr{display:none}

  .dropzone{padding:32px 14px}
  .dropzone h3{font-size:1rem}

  .dlbtn{font-size:.88rem;padding:14px}

  .foot-inner{flex-direction:column;align-items:flex-start;gap:12px}
  .foot-info{text-align:left}
  .foot-note{text-align:left}
}

/* Very small (< 360px) */
@media(max-width:360px){
  .nav-logo-text{font-size:1rem}
  .nav-cta{padding:6px 10px;font-size:.68rem}
  .hero h1{font-size:1.5rem}
  .card{padding:14px}
  .tex-opt .sz{font-size:.95rem}
}