/* IOTEFL language selector + back to top */
.lang-float{position:fixed;right:20px;top:150px;z-index:9999;font-family:Inter,Arial,sans-serif}
.lang-float__toggle{width:50px;height:50px;border-radius:50%;border:2px solid rgba(255,255,255,.9);background:#132f57;color:#fff;box-shadow:0 8px 24px rgba(10,31,58,.28),0 0 0 0 rgba(179,38,45,.35);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:22px;transition:transform .25s ease,box-shadow .25s ease,background .25s ease;animation:langPulse 2.8s ease-in-out infinite}
.lang-float__toggle:hover,.lang-float.open .lang-float__toggle{background:#b3262d;transform:rotate(18deg) scale(1.06);box-shadow:0 12px 30px rgba(10,31,58,.35),0 0 18px rgba(179,38,45,.35)}
.lang-float__menu{position:absolute;right:0;top:62px;width:184px;padding:9px;background:#fff;border:1px solid rgba(19,47,87,.12);border-radius:14px;box-shadow:0 16px 42px rgba(10,31,58,.22);opacity:0;visibility:hidden;transform:translateY(-8px) scale(.97);transform-origin:top right;transition:.2s ease}
.lang-float.open .lang-float__menu{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.lang-float__title{padding:7px 10px 8px;color:#667085;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.lang-float__link{display:flex;align-items:center;gap:10px;padding:10px 11px;border-radius:9px;color:#132f57;text-decoration:none;font-size:14px;font-weight:650;transition:background .15s ease,color .15s ease}
.lang-float__link:hover{background:#f3f6fa;color:#b3262d}.lang-float__link.active{background:#edf3fa;color:#132f57}.lang-float__flag{font-size:20px;line-height:1}
.back-to-top{position:fixed;right:20px;bottom:20px;z-index:9998;width:48px;height:48px;border-radius:50%;border:2px solid rgba(255,255,255,.9);background:#132f57;color:#fff;box-shadow:0 10px 28px rgba(10,31,58,.28);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:25px;line-height:1;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .25s ease,visibility .25s ease,transform .25s ease,background .2s ease}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}.back-to-top:hover{background:#b3262d;transform:translateY(-3px)}
@keyframes langPulse{0%,100%{box-shadow:0 8px 24px rgba(10,31,58,.28),0 0 0 0 rgba(179,38,45,.30)}50%{box-shadow:0 10px 28px rgba(10,31,58,.30),0 0 0 10px rgba(179,38,45,0)}}
@media(max-width:900px){.lang-float{top:116px;right:14px}}
@media(max-width:640px){.lang-float{top:102px;right:12px}.lang-float__toggle{width:46px;height:46px}.lang-float__menu{top:56px}.back-to-top{right:12px;bottom:12px;width:46px;height:46px}}
@media(prefers-reduced-motion:reduce){.lang-float__toggle{animation:none}.lang-float__toggle,.back-to-top{transition:none}}