.auth-theme{position:fixed;top:18px;right:18px;z-index:30;width:42px;height:42px;border:1px solid #d9e1ec;border-radius:12px;background:#fff;color:#1e293b;font-size:22px;line-height:1;cursor:pointer;box-shadow:0 8px 24px rgba(15,23,42,.1);transition:background .2s,color .2s,border-color .2s,transform .2s}.auth-theme:hover{transform:translateY(-1px);border-color:#2563eb;color:#2563eb}.current-rental:after{content:'F'!important}html[data-theme="dark"] .auth-theme{background:#172033;color:#e5edf8;border-color:#334155;box-shadow:0 8px 24px rgba(0,0,0,.32)}html[data-theme="dark"] .auth-theme:hover{border-color:#60a5fa;color:#93c5fd}@media(max-width:640px){.auth-theme{top:12px;right:12px;width:38px;height:38px}}