body .theme-toggle-btn,body .portal-theme{display:inline-grid;place-items:center;width:36px;min-width:36px;height:36px;padding:0;border:1px solid var(--portal-line,var(--border-strong));border-radius:10px;background:var(--portal-surface,var(--surface-topbar));color:var(--portal-muted,var(--text-secondary));box-shadow:none;cursor:pointer;transition:background .16s,color .16s,border-color .16s}body .theme-toggle-btn:hover,body .portal-theme:hover{color:var(--portal-accent,var(--brand));border-color:var(--portal-ring,var(--brand-ring))}body .theme-toggle-btn .theme-toggle-knob{display:none}body .theme-toggle-btn svg,body .portal-theme svg{position:static;width:18px;height:18px;opacity:1;transform:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}[data-theme=dark] .theme-toggle-btn .theme-toggle-moon,[data-theme=light] .theme-toggle-btn .theme-toggle-sun{display:none}body .lang-btn{height:36px;border-radius:10px;border-color:var(--portal-line,var(--border-strong));background:var(--portal-surface,var(--surface-topbar));color:var(--portal-muted,var(--text-secondary))}body .lang-globe{stroke:var(--portal-accent,var(--brand))}body .lang-dropdown{border-color:var(--portal-line,var(--border));background:var(--portal-surface,var(--bg-card));backdrop-filter:blur(20px)}body .lang-option.active{background:var(--portal-soft,var(--brand-soft));color:var(--portal-accent,var(--brand))}.auth-preferences{position:fixed;top:20px;right:24px;z-index:100;display:flex;align-items:center;gap:8px}.auth-preferences .theme-toggle-btn,.auth-preferences .portal-theme{position:static!important;width:36px!important;height:36px!important;min-width:36px!important;background:var(--lg-card)!important;border:1px solid var(--lg-line)!important;border-radius:10px!important;box-shadow:none!important}.auth-preferences .lang-btn{background:var(--lg-card);border-color:var(--lg-line);color:var(--lg-text)}.auth-preferences .lang-globe{stroke:var(--lg-accent-2)}.auth-preferences .lang-dropdown{background:var(--lg-card);border-color:var(--lg-line);color:var(--lg-text)}@media(max-width:480px){.auth-preferences{top:16px;right:16px}}