/* The Bitcoin Store — mobile nav menu (burger visible <900px, all pages) */
.tbs-nav-burger{display:none;background:none;border:0;padding:10px;margin:0;cursor:pointer;flex-direction:column;justify-content:center;gap:5px}
.tbs-nav-burger span{display:block;width:22px;height:2px;background:#FAFAFA;border-radius:1px;transition:transform .2s ease,opacity .2s ease}
@media(max-width:900px){
.tbs-nav-burger{display:flex}
#tbs-nav.menu-open .tbs-nav-links{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;margin:0;background:#050505;border-bottom:1px solid rgba(255,255,255,.12);padding:8px 16px 16px}
#tbs-nav.menu-open .tbs-nav-links a{padding:14px 12px;font-size:17px;border-radius:8px}
#tbs-nav.menu-open .tbs-nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
#tbs-nav.menu-open .tbs-nav-burger span:nth-child(2){opacity:0}
#tbs-nav.menu-open .tbs-nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}
/* two nav buttons + burger must fit small phones */
@media(max-width:560px){
#tbs-nav .tbs-nav-in{padding:0 12px;gap:12px}
#tbs-nav .tbs-nav-cta{gap:10px}
#tbs-nav .tbs-nav-book,#tbs-nav .tbs-nav-register{padding:0 17px;font-size:13px}
}
/* below 480px: Register stays visible; Book Appointment shortens to "Book",
   logo and gaps shrink so the whole bar fits a 360px screen */
.tbs-nav-book .bk-short{display:none}
@media(max-width:480px){
#tbs-nav .tbs-nav-in{padding:0 10px;gap:10px}
#tbs-nav .tbs-nav-cta{gap:8px}
#tbs-nav .tbs-nav-logo img{height:24px}
#tbs-nav .tbs-nav-book .bk-full{display:none}
#tbs-nav .tbs-nav-book .bk-short{display:inline}
}
/* Register also appears in the open burger menu (hidden in the desktop link row) */
#tbs-nav .tbs-nav-links .tbs-nav-reglink{display:none}
#tbs-nav.menu-open .tbs-nav-links .tbs-nav-reglink{display:block}