/* BTair Footer Pro */
.btf-footer{
  --g-bd:rgba(255,255,255,.14);--g-hi:rgba(255,255,255,.22);
  position:relative;isolation:isolate;overflow:hidden;width:100%;box-sizing:border-box;
  margin:40px 0 0;padding:64px 0 0;color:var(--btf-text,#e9e9ee);
  background:linear-gradient(180deg,color-mix(in srgb,var(--btf-bg,#0b0b10) 94%,#fff),var(--btf-bg,#0b0b10));
  border-radius:34px 34px 0 0;font-size:15px;line-height:1.8}
.btf-footer *,.btf-footer *::before,.btf-footer *::after{box-sizing:border-box}
.btf-footer a{color:inherit;text-decoration:none;box-shadow:none}
.btf-footer ul{list-style:none;margin:0;padding:0}
.btf-footer li{list-style:none;margin:0}
.btf-footer h4{margin:0 0 16px;font-size:17px;font-weight:800;color:#fff;position:relative;padding-bottom:12px}
.btf-footer h4::after{
  content:"";position:absolute;bottom:0;inset-inline-start:0;width:38px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,var(--btf-primary,#ff8a00),#ffc247)}

/* خط درخشان متحرک بالا */
.btf-wave::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;z-index:2;
  background:linear-gradient(90deg,transparent,var(--btf-primary,#ff8a00),#ffc247,var(--btf-primary,#ff8a00),transparent);
  background-size:300% 100%;animation:btfLine 6s linear infinite}
@keyframes btfLine{0%{background-position:0 0}100%{background-position:300% 0}}

/* گوی‌های نورانی پس‌زمینه */
.btf-bg{position:absolute;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.btf-orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5}
.btf-orb.o1{width:340px;height:340px;top:-120px;inset-inline-end:-80px;background:var(--btf-primary,#ff8a00);animation:btfF1 12s ease-in-out infinite}
.btf-orb.o2{width:300px;height:300px;bottom:-140px;inset-inline-start:-60px;background:#7c3aed;opacity:.35;animation:btfF2 14s ease-in-out infinite}
.btf-orb.o3{width:220px;height:220px;top:40%;left:45%;background:#ffc247;opacity:.14;animation:btfF1 17s ease-in-out infinite reverse}
@keyframes btfF1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-50px,40px) scale(1.2)}}
@keyframes btfF2{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(60px,-40px) scale(1.15)}}

.btf-inner{position:relative;width:min(1200px,calc(100% - 40px));margin:0 auto}
.btf-grid{display:grid;grid-template-columns:minmax(260px,1.5fr) repeat(auto-fit,minmax(150px,1fr));gap:36px;padding-bottom:36px}
.btf-grid > .btf-col:only-child{grid-column:1/-1}

/* ورود پله‌ای */
.btf-js [data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.22,.8,.3,1) var(--d,0ms),transform .7s cubic-bezier(.22,.8,.3,1) var(--d,0ms)}
.btf-js [data-reveal].btf-in{opacity:1;transform:none}

/* درباره */
.btf-brand{display:inline-flex;align-items:center;margin-bottom:14px}
.btf-brand img{max-height:54px;width:auto;max-width:220px;display:block;filter:drop-shadow(0 6px 18px rgba(0,0,0,.4))}
.btf-brand span{
  font-size:28px;font-weight:900;letter-spacing:.5px;
  background:linear-gradient(90deg,var(--btf-primary,#ff8a00),#ffc247,var(--btf-primary,#ff8a00));background-size:220% 100%;
  -webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;animation:btfShine 5s linear infinite}
@keyframes btfShine{0%{background-position:0 0}100%{background-position:220% 0}}
.btf-about-t{margin:0 0 18px;color:color-mix(in srgb,var(--btf-text,#e9e9ee) 78%,transparent);max-width:420px}

/* شبکه‌های اجتماعی */
.btf-socials{display:flex;flex-wrap:wrap;gap:10px}
.btf-soc{
  display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:15px;color:#fff;
  background:linear-gradient(145deg,rgba(255,255,255,.14),rgba(255,255,255,.04));
  border:1px solid var(--g-bd);box-shadow:inset 0 1px 0 var(--g-hi);
  transition:transform .3s,box-shadow .3s,background .3s}
.btf-soc svg{transition:transform .3s}
.btf-soc:hover{transform:translateY(-5px) rotate(-4deg);border-color:transparent;color:#fff}
.btf-soc:hover svg{transform:scale(1.15)}
.btf-soc-ig:hover{background:linear-gradient(135deg,#f58529,#dd2a7b 55%,#8134af);box-shadow:0 12px 26px rgba(221,42,123,.4)}
.btf-soc-tg:hover{background:#2aabee;box-shadow:0 12px 26px rgba(42,171,238,.4)}
.btf-soc-wa:hover{background:#25d366;box-shadow:0 12px 26px rgba(37,211,102,.4)}
.btf-soc-yt:hover{background:#ff0033;box-shadow:0 12px 26px rgba(255,0,51,.4)}

/* لینک‌ها */
.btf-list li{margin:0 0 4px}
.btf-list a{
  display:inline-flex;align-items:center;gap:8px;padding:5px 0;position:relative;
  color:color-mix(in srgb,var(--btf-text,#e9e9ee) 80%,transparent);transition:color .25s,transform .25s}
.btf-list a::before{
  content:"";width:0;height:2px;border-radius:2px;background:var(--btf-primary,#ff8a00);transition:width .3s}
.btf-list a:hover{color:var(--btf-primary,#ff8a00);transform:translateX(-4px)}
[dir="ltr"] .btf-list a:hover{transform:translateX(4px)}
.btf-list a:hover::before{width:14px}

/* تماس */
.btf-ci li{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px}
.btf-ci i{
  display:flex;align-items:center;justify-content:center;flex:none;width:36px;height:36px;border-radius:12px;font-style:normal;
  color:var(--btf-primary,#ff8a00);
  background:linear-gradient(145deg,color-mix(in srgb,var(--btf-primary,#ff8a00) 22%,transparent),rgba(255,255,255,.03));
  border:1px solid var(--g-bd);box-shadow:inset 0 1px 0 var(--g-hi)}
.btf-ci span,.btf-ci a{padding-top:5px;color:color-mix(in srgb,var(--btf-text,#e9e9ee) 85%,transparent)}
.btf-ci a:hover{color:var(--btf-primary,#ff8a00);transform:none}
.btf-ci a::before{display:none}

/* نمادهای اعتماد */
.btf-trust{
  padding:22px 22px 24px;margin-bottom:30px;border-radius:26px;
  background:linear-gradient(145deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--g-bd);box-shadow:inset 0 1px 0 var(--g-hi),0 20px 50px rgba(0,0,0,.25)}
.btf-glass .btf-trust{-webkit-backdrop-filter:blur(16px) saturate(160%);backdrop-filter:blur(16px) saturate(160%)}
.btf-trust h4{margin-bottom:18px}
.btf-badges{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.btf-badge{
  display:flex;align-items:center;justify-content:center;min-width:96px;min-height:96px;padding:10px;border-radius:20px;
  background:rgba(255,255,255,.92);box-shadow:0 10px 26px rgba(0,0,0,.28),inset 0 1px 0 #fff;
  transition:transform .3s,box-shadow .3s}
.btf-badge:hover{transform:translateY(-6px) scale(1.04);box-shadow:0 18px 34px rgba(0,0,0,.4),0 0 0 3px color-mix(in srgb,var(--btf-primary,#ff8a00) 55%,transparent)}
.btf-badge img{max-height:80px;width:auto;max-width:150px;display:block;margin:0;border:0;background:none}
.btf-badge a{display:flex;align-items:center;justify-content:center}
.btf-badge-code{flex-wrap:wrap;gap:10px;background:rgba(255,255,255,.92)}
.btf-badge-code:empty{display:none}

/* پایین */
.btf-bottom{
  display:flex;align-items:center;justify-content:center;text-align:center;flex-wrap:wrap;gap:10px;
  padding:20px 0 24px;border-top:1px solid var(--g-bd);position:relative;
  font-size:13.5px;color:color-mix(in srgb,var(--btf-text,#e9e9ee) 62%,transparent)}
.btf-bottom::before{
  content:"";position:absolute;top:-1px;left:50%;width:160px;height:1px;transform:translateX(-50%);
  background:linear-gradient(90deg,transparent,var(--btf-primary,#ff8a00),transparent)}

/* دکمه بازگشت به بالا */
.btf-top{
  position:fixed;z-index:9990;inset-inline-start:18px;bottom:calc(18px + env(safe-area-inset-bottom,0px));
  display:flex;align-items:center;justify-content:center;width:50px;height:50px;padding:0;border-radius:50%;cursor:pointer;
  color:var(--btf-primary,#ff8a00);
  background:rgba(15,15,22,.55);border:1px solid var(--g-bd);
  -webkit-backdrop-filter:blur(14px) saturate(180%);backdrop-filter:blur(14px) saturate(180%);
  box-shadow:0 10px 28px rgba(0,0,0,.4),inset 0 1px 0 var(--g-hi);
  opacity:0;visibility:hidden;transform:translateY(20px) scale(.8);
  transition:opacity .35s,transform .35s,visibility .35s,box-shadow .3s}
.btf-top.is-show{opacity:1;visibility:visible;transform:none}
.btf-top:hover{box-shadow:0 14px 34px color-mix(in srgb,var(--btf-primary,#ff8a00) 45%,transparent),inset 0 1px 0 var(--g-hi)}
.btf-top:hover svg:not(.btf-ring){transform:translateY(-3px)}
.btf-top svg{transition:transform .25s}
.btf-ring{position:absolute;inset:3px;width:calc(100% - 6px);height:calc(100% - 6px);transform:rotate(-90deg)}
.btf-ring circle{stroke:var(--btf-primary,#ff8a00);stroke-linecap:round;transition:stroke-dashoffset .12s linear}
body:has(.btm-dock) .btf-top{bottom:calc(104px + env(safe-area-inset-bottom,0px))}
body:has(.btm-dock) .btf-footer{padding-bottom:84px}

/* ===== ریسپانسیو ===== */
@media(max-width:1000px){
  .btf-grid{grid-template-columns:1fr 1fr;gap:30px}
  .btf-about{grid-column:1/-1}
}
@media(max-width:700px){
  .btf-footer{padding-top:48px;border-radius:26px 26px 0 0}
  .btf-grid{grid-template-columns:1fr;gap:0}
  .btf-about{margin-bottom:22px}
  .btf-about-t{max-width:none}
  .btf-trust{padding:18px 16px;border-radius:22px}
  .btf-badges{gap:12px;justify-content:center}
  .btf-badge{min-width:84px;min-height:84px}
  /* آکاردئون */
  .btf-js .btf-acc{border-top:1px solid var(--g-bd);padding:2px 0}
  .btf-js .btf-acc h4{
    display:flex;align-items:center;justify-content:space-between;margin:0;padding:15px 2px;cursor:pointer;
    -webkit-tap-highlight-color:transparent}
  .btf-js .btf-acc h4::after{
    position:static;width:9px;height:9px;border-radius:0;background:none;flex:none;
    border-inline-end:2px solid var(--btf-primary,#ff8a00);border-bottom:2px solid var(--btf-primary,#ff8a00);
    transform:rotate(45deg);transition:transform .3s}
  .btf-js .btf-acc.is-open h4::after{transform:rotate(225deg)}
  .btf-js .btf-acc ul{overflow:hidden;max-height:0;transition:max-height .4s ease}
  .btf-js .btf-acc.is-open ul{padding-bottom:12px}
  .btf-top{width:46px;height:46px}
}
@media(max-width:380px){
  .btf-inner{width:calc(100% - 28px)}
  .btf-brand span{font-size:24px}
  .btf-soc{width:42px;height:42px}
}

@media(prefers-reduced-motion:reduce){
  .btf-wave::before,.btf-orb,.btf-brand span{animation:none}
  .btf-js [data-reveal]{opacity:1;transform:none;transition:none}
}
@media print{.btf-footer .btf-bg,.btf-top{display:none}}


/* ===================================================== */
/* ===== v1.1: ویژگی‌ها، CTA، آمار، نور، واترمارک ===== */
/* ===================================================== */

/* نور دنبال‌کننده‌ی موس روی کل فوتر */
.btf-spot::after{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(560px circle at var(--mx,70%) var(--my,25%),color-mix(in srgb,var(--btf-primary,#ff8a00) 17%,transparent),transparent 62%)}

/* نور روی کارت‌ها */
.btf-glow{position:relative;overflow:hidden}
.btf-glow::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .35s;border-radius:inherit;
  background:radial-gradient(260px circle at var(--x,50%) var(--y,50%),color-mix(in srgb,var(--btf-primary,#ff8a00) 26%,transparent),transparent 65%)}
.btf-glow:hover::before{opacity:1}

/* نوار ویژگی‌ها */
.btf-feats{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin-top:-24px;margin-bottom:34px}
.btf-feat{
  display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:22px;
  background:linear-gradient(145deg,rgba(255,255,255,.09),rgba(255,255,255,.025));
  border:1px solid var(--g-bd);box-shadow:inset 0 1px 0 var(--g-hi),0 14px 34px rgba(0,0,0,.28);
  transition:transform .35s,box-shadow .35s}
.btf-glass .btf-feat{-webkit-backdrop-filter:blur(16px) saturate(160%);backdrop-filter:blur(16px) saturate(160%)}
.btf-feat:hover{transform:translateY(-6px);box-shadow:inset 0 1px 0 var(--g-hi),0 22px 44px rgba(0,0,0,.4)}
.btf-feat i{
  position:relative;display:flex;align-items:center;justify-content:center;flex:none;width:52px;height:52px;border-radius:17px;font-style:normal;
  color:#1b1206;background:linear-gradient(135deg,var(--btf-primary,#ff8a00),#ffc247);
  box-shadow:0 10px 22px color-mix(in srgb,var(--btf-primary,#ff8a00) 40%,transparent),inset 0 1px 0 rgba(255,255,255,.55);
  transition:transform .4s}
.btf-feat:hover i{transform:rotate(-8deg) scale(1.1)}
.btf-feat b{display:block;font-size:15.5px;font-weight:800;color:#fff;line-height:1.5}
.btf-feat span{display:block;font-size:13px;line-height:1.6;color:color-mix(in srgb,var(--btf-text,#e9e9ee) 68%,transparent)}

/* بنر CTA */
.btf-cta{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:28px 32px;margin-bottom:44px;border-radius:30px;color:#1b1206;
  background:linear-gradient(120deg,var(--btf-primary,#ff8a00),#ffb020 55%,#ffd36b);
  box-shadow:0 24px 60px color-mix(in srgb,var(--btf-primary,#ff8a00) 38%,transparent),inset 0 1px 0 rgba(255,255,255,.6)}
.btf-cta::after{
  content:"";position:absolute;top:-60%;width:40%;height:220%;left:-60%;transform:rotate(18deg);pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.45),transparent);animation:btfSweep 5s ease-in-out infinite}
@keyframes btfSweep{0%{left:-60%}55%,100%{left:130%}}
.btf-cta-t b{display:block;font-size:clamp(19px,2.6vw,26px);font-weight:900;line-height:1.5}
.btf-cta-t span{display:block;font-size:14.5px;font-weight:600;opacity:.8}
.btf-cta .btf-cta-b{
  position:relative;z-index:1;display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:18px;
  font-weight:800;font-size:15px;color:#fff;background:#0b0b10;
  box-shadow:0 12px 28px rgba(0,0,0,.35);transition:transform .3s,box-shadow .3s}
.btf-cta .btf-cta-b svg{transition:transform .3s}
.btf-cta .btf-cta-b:hover{transform:translateY(-3px);box-shadow:0 18px 36px rgba(0,0,0,.45)}
.btf-cta .btf-cta-b:hover svg{transform:translateX(-5px)}
[dir="ltr"] .btf-cta .btf-cta-b svg{transform:scaleX(-1)}
[dir="ltr"] .btf-cta .btf-cta-b:hover svg{transform:scaleX(-1) translateX(-5px)}

/* آمار */
.btf-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin-bottom:30px}
.btf-stat{
  text-align:center;padding:22px 12px;border-radius:24px;
  background:linear-gradient(145deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid var(--g-bd);box-shadow:inset 0 1px 0 var(--g-hi)}
.btf-glass .btf-stat{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
.btf-num{
  display:block;font-size:clamp(28px,4.4vw,40px);font-weight:900;line-height:1.3;
  background:linear-gradient(135deg,var(--btf-primary,#ff8a00),#ffc247);
  -webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent}
.btf-stat span{display:block;font-size:13.5px;font-weight:600;color:color-mix(in srgb,var(--btf-text,#e9e9ee) 72%,transparent)}

/* نوشته‌ی بزرگ پس‌زمینه */
.btf-wm{
  position:absolute;left:50%;bottom:-.16em;transform:translateX(-50%);z-index:-1;pointer-events:none;user-select:none;
  font-size:clamp(70px,17vw,240px);font-weight:900;line-height:1;white-space:nowrap;letter-spacing:2px;direction:ltr;
  color:transparent;-webkit-text-stroke:1.5px rgba(255,255,255,.07)}

/* تیلت سه‌بعدی نمادها */
.btf-badge{transform-style:preserve-3d;will-change:transform}

/* فاصله‌ی نشانگر حفظ شده در ریسپانسیو */
@media(max-width:1000px){
  .btf-grid{grid-template-columns:1fr 1fr}
  .btf-feats{margin-top:-14px}
}
@media(max-width:700px){
  .btf-feats{grid-template-columns:1fr 1fr;gap:12px;margin-top:-8px;margin-bottom:26px}
  .btf-feat{flex-direction:column;text-align:center;padding:16px 10px;gap:10px}
  .btf-cta{padding:22px 20px;border-radius:24px;text-align:center;justify-content:center;margin-bottom:32px}
  .btf-cta .btf-cta-b{width:100%;justify-content:center}
  .btf-stats{grid-template-columns:1fr 1fr;gap:12px}
  .btf-stat{padding:16px 8px;border-radius:20px}
}
@media(max-width:380px){
  .btf-feats{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  .btf-cta::after{animation:none}
}
@media(hover:none){
  .btf-spot::after{display:none}
  .btf-glow::before{display:none}
}