:root{--z-drag:5;--z-tab-bar:40;--z-modal:50;--z-toast:60;--z-blocking-overlay:100;--brand-color:#3182f6;--success-color:#22c55e;--error-color:#e11;--muted-color:#888;--border-color:#ddd;--control-radius:10px;--card-radius:14px;--control-min-height:44px}.toast{left:16px;right:16px;bottom:calc(84px + env(safe-area-inset-bottom,0px));z-index:var(--z-toast);border-radius:var(--card-radius);color:#fff;background:#2b2f36;align-items:flex-start;gap:8px;padding:12px 14px;animation:.18s ease-out toast-in;display:flex;position:fixed;box-shadow:0 8px 24px #00000047}.btn,.link-button,.stamp-maker__toggle-btn{transition:opacity .1s,transform .1s}.btn:active,.stamp-maker__toggle-btn:active{opacity:.8;transform:scale(.98)}.link-button:active{opacity:.6}.btn:disabled{opacity:.45}.state-message{color:var(--muted-color);padding:24px;font-size:14px}.error-text{color:var(--error-color);font-size:13px}.warning-banner{border-radius:var(--control-radius);text-align:left;background:#fef2f2;border:1px solid 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